Provided is a series of transmission devices that can be used for vehicles of different layouts while avoiding complication of design. One aspect of the present disclosure is a series of transmission devices comprising a first transmission device and a second transmission device. The first transmission device and the second transmission device each comprise a transmission mechanism and a gear case that accommodates the transmission mechanism. A twisting direction of an input gear, a twisting direction of a ring gear, a twisting direction of a first gear, and a twisting direction of a second gear in the second transmission device are respectively opposite to a twisting direction of an input gear, a twisting direction of a ring gear, a twisting direction of a first gear, and a twisting direction of a second gear in the first transmission device.
The present invention provides a transmission device that can lubricate bearings while mitigating increases in the size of the gear case. One embodiment of the present disclosure is a transmission device comprising: a transmission mechanism; and a gear case in which the transmission mechanism is housed. The gear case has a recessed section recessed into the outside of the gear case and an oil catch section provided radially outward from a ring gear as viewed from the axial direction of the ring gear. The recessed section and the oil catch section are located above the rotational axis center of the ring gear. The oil catch section is located ahead of the recessed section in a reference rotation direction of the ring gear.
Provided is a differential device having improved durability of a differential case. One aspect of the present disclosure is a differential device comprising: a ring gear to which a driving force is input; and a differential case having a flange section to which the ring gear is joined. The flange section comprises, along a rotation axis direction of the differential case: a first outer peripheral part to which the ring gear is welded; a second outer peripheral part adjacent to the first outer peripheral part and having a diameter smaller than that of the first outer peripheral part; and a third outer peripheral part adjacent to the second outer peripheral part. The second outer peripheral part is provided with a part having a smaller diameter on the third outer peripheral part side than on the first outer peripheral part side.
i). Consequently, even when an oil surface of the oil storing part is set to a low level, the oil lifted up by the large-diameter gear part of the planetary gear can be efficiently supplied into the differential case, which suppresses a churning resistance of the oil and improves transmission efficiency.
F16H 57/04 - Features relating to lubrication or cooling
F16H 37/08 - Combinations of mechanical gearings, not provided for in groups comprising essentially only toothed or friction gearings with arrangements for dividing torque between two or more intermediate shafts with differential gearing
F16H 48/40 - Constructional details characterised by features of the rotating cases
F16H 57/029 - Gearboxes; Mounting gearing therein characterised by means for sealing gearboxes, e.g. to improve airtightness
F16H 57/037 - Gearboxes for accommodating differential gearing
A storage battery management device that manages a battery assembly in which a plurality of storage batteries are connected in series includes: a control unit; an activation switch; and a power supply activation circuit that turns on the activation switch when a logic state of the external activation signal becomes an activation logic and maintains the on-state of the activation switch as long as an activation maintenance signal is input. The control unit includes a line switch control unit, an activation maintenance control unit, and an OCV identifying unit. The line switch control unit turns on a line switch when the external activation signal becomes an activation logic. The activation maintenance control unit starts the output of the activation maintenance signals to the power supply activation circuit when the external activation signal becomes the activation logic. The OCV identifying unit acquires the change amount of the voltage of each storage battery at predetermined time intervals when the external activation signal becomes the stop logic, records the voltage of each storage battery as the OCV when the change amount of the voltage all becomes equal to or smaller than a predetermined change amount, and stops the output of the activation maintenance signal.
In a gear pair in which a first gear and a second gear having a larger number of teeth than the first gear share a meshing line (L) of teeth that mesh with each other, at least a part of the meshing line (L) includes a region where a pressure angle (a) is not constant, and the pressure angle (α) weakly increases in a section of the meshing line (L) from a pitch point (Pp) to an end point (Pe1) on a tooth-root side of the first gear (G1). This allows both desired properties (for example, strength) and smooth meshing to be achieved, and also allows effective increase in strength of the tooth-root side of the gear having the small number of the teeth (that is, the first gear) subject to a large load and susceptible to damages on the tooth-root side.
F16H 1/14 - Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising conical gears only
Provided is a transmission device including a differential case. The differential case includes at least a part of a contamination pouch. The contamination pouch includes an inlet facing into a body part of the differential case and capable of collecting a contamination in an oil inside the body part. In an inner surface of the differential case, the inlet is arranged in a largest inner diameter part on which a largest centrifugal force acts during rotation of the differential case, or arranged closer to an oil discharging port with respect to the largest inner diameter part in an axial direction.
F16H 37/08 - Combinations of mechanical gearings, not provided for in groups comprising essentially only toothed or friction gearings with arrangements for dividing torque between two or more intermediate shafts with differential gearing
F16H 48/08 - Differential gearings with gears having orbital motion with orbital conical gears
F16H 48/40 - Constructional details characterised by features of the rotating cases
Provided is a transmission device including a differential case. The differential case is configured to be divided into first and second cases defining therebetween a mechanism chamber housing a differential mechanism therein and capable of storing an oil at a bottom part of the mechanism chamber. Two or more planetary gears are pivotally supported by a carrier of a gear reducer in the vicinity of large-diameter gear parts and pivotally supported by the differential case in the vicinity of small-diameter gear parts. The second case is held between the first case and the carrier coupled to the first case, whereby the second case is fixed to the first case.
F16H 48/08 - Differential gearings with gears having orbital motion with orbital conical gears
F16H 37/08 - Combinations of mechanical gearings, not provided for in groups comprising essentially only toothed or friction gearings with arrangements for dividing torque between two or more intermediate shafts with differential gearing
F16H 48/40 - Constructional details characterised by features of the rotating cases
F16H 57/037 - Gearboxes for accommodating differential gearing
F16H 57/04 - Features relating to lubrication or cooling
9.
STORAGE BATTERY MANAGEMENT DEVICE, STORAGE BATTERY MANAGEMENT SYSTEM, AND MANAGEMENT METHOD FOR STORAGE BATTERY
The present invention suppresses a decrease in accuracy of the SOC of a storage battery after charging has stopped. The storage battery management device manages a storage battery having properties where the SOC-OCV properties during discharging and the SOC-OCV properties during charging differ from each other. The storage battery management device comprises: an OCV acquisition unit that acquires the OCV of the storage battery; and a post-charging SOC estimation unit that estimates the SOC of the storage battery in a post-charging stopped state which occurs after charging of the storage battery has stopped and during which no discharging to an external device occurs. If the internal current integrated value, which is the integrated value of the current flowing from the storage battery to the storage battery management device in the post-charging stopped state, is at a first threshold value or higher, the post-charging SOC estimation unit estimates the SOC of the storage battery on the basis of the OCV acquired by the OCV acquisition unit and the SOC-OCV properties during discharging.
G01R 31/3828 - Arrangements for monitoring battery or accumulator variables, e.g. SoC using current integration
G01R 31/378 - Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] specially adapted for the type of battery or accumulator
Provided is a transmission device that can suppress a decline in a supply amount of oil to a catch tank. One aspect of the present disclosure pertains to a transmission device provided with a transmission mechanism and a gear case which accommodates the transmission mechanism. The transmission mechanism has an input gear, a counter gear, and a ring gear. The gear case has: a catch tank; a guide which sends oil scraped up by the ring gear to the catch tank; and a guiding part which is arranged so as to be shifted from the guide in the axial direction of the ring gear and which guides oil to the guide. The guide has an upstream end and a downstream end in an oil flow direction. The upstream end is located on the outer side in the radial direction of the ring gear. The induction part extends from a first end connected to the upstream end of the guide to a second end which overlaps with the ring gear when viewed from the axial direction of the ring gear.
Provided is a transmission device that can curb deterioration of lubricity of a bearing. One aspect of the present disclosure is a transmission device comprising a transmission mechanism, and a gear case that houses the transmission mechanism. The transmission mechanism includes an input gear, a counter gear, a ring gear, a first differential case bearing, and a second differential case bearing. The gear case includes a catch tank, a guide that sends oil moved up by the ring gear to the catch tank, and a buffer part that sends, to the second differential case bearing, some of the oil flowing through the guide. The ring gear is a twisted helical gear configured to send the oil to the first differential case bearing side along an axial direction of the ring gear when the ring gear rotates in a direction in which the oil is moved up toward the guide.
Provided is a transmission device that enables suppression of a decrease in bearing lubricity regardless of the rotational speed of a ring gear. One embodiment of the present disclosure is a transmission device comprising: a transmission mechanism; and a gear case in which the transmission mechanism is housed. The transmission mechanism comprises an input gear, a counter gear, and a ring gear. The gear case comprises: a catch tank; a guide that is positioned at a higher location than that of a counter gear bearing and that feeds oil scooped up by the ring gear to the catch tank; a first counter gear flow path for sending oil from the catch tank to the counter gear bearing; and a second counter gear flow path for sending oil scooped up by the ring gear directly to the counter gear bearing. The second counter gear flow path is positioned at a lower location than an upstream end of the guide.
Provided is a transmission device that can suppress a degradation in the lubrication of a bearing when a vehicle is in backward travel. One aspect of the present disclosure is a transmission device comprising a transmission mechanism and a gear case that accommodates the transmission mechanism. The transmission mechanism has an input gear, a counter gear, and a ring gear. The counter gear has a first gear and a second gear. The center of rotation of the counter gear is positioned higher than the center of rotation of the input gear and the center of rotation of the ring gear. The gear case has: a catch tank; a main guide that feeds, to the catch tank, oil that has been scooped up by the ring gear when the ring gear is rotating in a first direction; and a reverse guide that feeds, to the catch tank, oil that has been scooped up by the first gear when the ring gear is rotating in a second direction.
Provided is a transmission device that improves the strength of support parts for a pawl shaft and that is capable of suppressing an increase in weight and material cost. One aspect of the present disclosure is a transmission device comprising: a transmission mechanism that has an input shaft; a parking lock mechanism; and a gear case. The parking lock mechanism has a pawl shaft and a parking pawl which is capable of swinging between a lock position and an unlock position around the pawl shaft. The gear case has a first support part which supports a first end part of the pawl shaft, a second support part which supports a second end part of the pawl shaft on the opposite side from the first end part, and a breather chamber via which an internal space accommodating the transmission mechanism and the parking lock mechanism is in communication with the outside of the gear case. The first support part constitutes part of a wall of the breather chamber.
Provided is a transmission device that can reduce the stirring resistance of a counter gear and a ring gear while suppressing increase in the size of a gear case. One aspect of the present disclosure is a transmission device that comprises a transmission mechanism and a gear case that houses the transmission mechanism. The transmission mechanism has an input gear, a counter gear, and a ring gear. The counter gear has a first gear and a second gear. The rotational axis of the counter gear is positioned above the rotational axis of the input gear and the rotational axis of the ring gear. The gear case has a catch tank that is arranged at a position that overlaps the input gear from above and a guide that sends oil thrown up by the ring gear to the catch tank. At least a portion of the guide overlaps the first gear as seen from the axial direction of the counter gear.
Provided is a transmission device capable of removing air from a support of a pole shaft while maintaining the strength of the support. A transmission device according to an aspect of the present disclosure comprises: a transmission mechanism; a parking lock mechanism; and a gear case. The parking lock mechanism has a pole shaft and a parking pole oscillatable about the pole shaft. The gear case has a first support that supports a first end of the pole shaft, and a second support that supports a second end of the pole shaft and that has, as compared to the first support, greater rigidity with respect to a lock load applied from the parking pole. The pole shaft has a communication hole formed from the first end to the second end. The second support has an insertion port, a bottom surface, and a groove extending from the bottom surface to the insertion port.
Provided is a transmission device including a transmission unit housed inside a transmission case with an oil storing part at a bottom part of the transmission case. As viewed in a projection plane orthogonal to a rotation axis of the transmission unit, an oil capturing part is arranged in a semicircle part of an outer circumferential wall of the transmission case. The semicircle part starts at a deepest part of the oil storing part and is positioned on a front side in a normal direction of a carrier.
F16H 57/04 - Features relating to lubrication or cooling
F16H 37/08 - Combinations of mechanical gearings, not provided for in groups comprising essentially only toothed or friction gearings with arrangements for dividing torque between two or more intermediate shafts with differential gearing
In a bevel gear pair, a first gear and a second gear are applied with tooth top modification, and a ratio of a distance from a pitch circle to a starting position of the tooth top modification to a distance from the pitch circle to a tooth top in the first gear is larger than a ratio of a distance from a pitch circle to a starting position of the tooth top modification to a distance from a pitch circle to a tooth top in the second gear. Thus, the bevel gear pair that can achieve smooth meshing is provided.
A power storage management device includes: a voltage detection unit; a current detection unit; and a voltage equalization circuit that includes a plurality of transformers including a first winding connected in parallel with each of the power storage elements and a second winding connected in parallel with the power storage unit and the current detection unit, a plurality of switch units including at least one of a first switch connected in series to the first winding and a second switch connected in series to the second winding. When a first abnormality determination condition is satisfied, a process corresponding to an abnormality detection of the current detection unit is performed, the first abnormality determination condition including the necessary condition that a detection result of the current detection unit caused by the on/off operation of the switch units corresponding to the target power storage elements is outside a normal current range.
H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
H02M 3/335 - Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
H02M 1/00 - APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF - Details of apparatus for conversion
H01M 10/42 - Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
A storage battery management device for managing an assembly of series connected storage batteries having SOC-OCV characteristics including a plateau region includes: a voltage equalization circuit that performs constant current control to reduce the voltage difference of each storage battery by transferring electric charge among the storage batteries; a coulomb counting processing unit that calculates the capacity of each storage battery; a target voltage calculation unit that sets a target voltage for each storage battery based on the average voltage and the internal resistance; and a voltage equalization control unit that controls the voltage equalization circuit to cause the voltage equalization circuit to perform the constant current control. If the average voltage is within the plateau region, the voltage equalization control unit continues constant current control when the capacity difference is ≥ a first capacity difference, and stops constant current control when the capacity difference reaches a second capacity difference.
G01R 31/396 - Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
G01R 31/392 - Determining battery ageing or deterioration, e.g. state of health
H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
H01M 10/42 - Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
There is provided a differential device including a differential case, side gears, two or more pinion gears, and oil introduction channels. In the differential device (D), an inner surface (Ci) of the differential case (C) includes pinion gear support surfaces (P1, P2) supporting back sides of the respective two or more pinion gears (22), inner surface oil grooves (Gi1, Gi2) provided in the inner surface at positions outward of the respective pinion gear support surfaces and communicating with the oil introduction channels (15, 16), pinion gear lubricating oil grooves (Gp) provided to the pinion gear support surfaces and having one ends opened to the inner surface oil grooves, and discharge channels (O1, O2) making the other ends of the pinion gear lubricating oil grooves communicate with an internal space (17) of the differential case.
A differential device includes a differential case having an inner surface with an oil introducing part. The oil introducing part is located between, in an axial direction, a corresponding one side gear support surface and at least a part of a circumferential rim of a window in a circumferential direction. The oil introducing part at least partially protrudes from the inner surface toward a first axial line so as to guide oil such that the oil deviates from a flow direction from the corresponding one side gear support surface to the window along the inner surface and flows around the window.
Provided is a transmission device that can increase the lubricity of a bearing of a planetary gear. The present disclosure is a transmission device comprising: a sun gear; a ring gear; a planetary gear; a bearing into which a shaft of the planetary gear is inserted; a differential case having a bearing holding part that holds the bearing; a differential mechanism disposed inside the differential case; and a gear case rotatably supporting the differential case. The bearing holding part has a cylindrical part that holds the bearing, and a pocket that has an internal space recessed from a radially inner side toward a radially outer side, and overlaps with the bearing in an axial direction. The gear case has a protrusion that overlaps with the pocket of the bearing holding part from the radially inner side, and protrudes axially toward the bearing.
The present disclosure provides a transmission device that can increase lubricity of a differential mechanism without using a pump. The present disclosure is a transmission device comprising a differential case and a differential mechanism that is disposed inside the differential case. The differential mechanism has a first pinion gear, a second pinion gear, a first side gear, and a second side gear. The differential case has an accommodation part, a first sleeve that is connected to the accommodation part, a second sleeve that is connected to the accommodation part, an oil discharge groove that extends from an outer end part of the first sleeve to the inside of the accommodation part, and an oil introduction groove that extends from an outer end part of the second sleeve to the inside of the accommodation part. The oil introduction groove reaches an internal space of the accommodation part on a side further radially outward than the second side gear, and is disposed so as to overlap with neither the first pinion gear nor the second pinion gear.
Provided is a transmission device with which the lubricity of a differential mechanism is improved without using a pump. The present disclosure is a transmission device comprising a differential case and a differential mechanism disposed inside the differential case. The differential mechanism has a first pinion gear and a second pinion gear, and a first side gear and a second side gear. The differential case has an accommodating part, a first sleeve coupled to the accommodating part, a second sleeve coupled to the accommodating part, an oil discharge groove that extends from an outer end part of the first sleeve to the inside of the accommodating part, and an oil introduction groove that extends from an outer end part of the second sleeve to the inside of the accommodating part. The oil discharge groove reaches an inside space of the accommodating part on a side further radially outside than the first side gear, and the width of the oil discharge groove increases toward the outer end part of the first sleeve.
The present invention accurately infers the SOC of a storage battery. A storage battery management device according to the present invention manages a storage battery that has an SOC-OCV characteristic including a plateau region where an OCV change rate, which is the absolute value of the amount of change in an OCV relative to the amount of change in the SOC, is relatively low and a plurality of change regions where the OCV change rate is relatively high. The storage battery management device comprises: an OCV acquisition unit that acquires an OCV of the storage battery; a first SOC inference unit that, when the OCV of the storage battery acquired by the OCV acquisition unit is within a first change region which is a change region and which includes an SOC of 100%, infers a first SOC on the basis of the OCV and the SOC-OCV characteristic of the storage battery; and a second SOC inference unit that, when the OCV of the storage battery is within a change region other than the first change region, infers a second SOC on the basis of the OCV and the SOC-OCV characteristic of the storage battery and on the basis of a correlation value which correlates with a deterioration state of the storage battery.
The present invention enables suppression of occurrence of capacity excess/shortage of an energy storage medium while maintaining business activities of a power supply destination business office. In this electric power control system, a control unit: acquires a power generation prediction pattern for predicting the transition of generated power from a power generation device using renewable energy, in a predetermined time slot; acquires a predefined activity pattern corresponding to a predefined activity schedule of a power supply destination business office, in the predetermined time slot; determines, on the basis of the power generation prediction pattern and the predefined activity pattern, a power consumption pattern indicating the transition of power consumption of the power supply destination business office such that a charging mode for charging the energy storage medium and a discharging mode for discharging the energy storage medium are repeatedly alternated in the predetermined time slot; performs control for charging/discharging of the energy storage medium on the basis of the power generation prediction pattern and the power consumption pattern; and outputs a business activity pattern corresponding to the power consumption pattern and corresponding to a schedule different from the predefined activity pattern.
H02J 3/00 - Circuit arrangements for ac mains or ac distribution networks
H02J 3/14 - Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
The present invention makes it possible to reduce component count and to charge/discharge in different operating voltage ranges. A storage battery according to the present invention comprises a first electrode that has positive or negative polarity, a second electrode that has the same polarity as the first electrode, and a shared electrode that has the opposite polarity from the first and second electrodes. The first electrode has a first collector foil and first active material layers that are formed on the respective surfaces of the first collector foil. The second electrode has a second collector foil and second active material layers that are formed on the respective surfaces of the second collector foil and have a different operating voltage from that of the first active material layers. The shared electrode is positioned between the first electrode and the second electrode, and has a shared collector foil in which a plurality of through holes have been formed and shared active material layers which are formed on the respective surfaces of the shared collector foil. The storage battery also comprises a first external terminal that is connected to the first electrode, a second external terminal that is connected to the second electrode, and a shared external terminal that is connected to the shared electrode.
The present invention automatically switches modes for controlling an electric motor in accordance with a usage state of an electric two-wheeled vehicle. This motor output control device is provided to an electric two-wheeled vehicle having a stand that is displaced from a support attitude, in which the stand is contact with the ground, to a separation attitude, in which the stand is separated from the ground. The motor output control device comprises: a motor control unit that has a first mode for controlling the electric motor of the electric two-wheeled vehicle, and a second mode that differs from the first mode in the motor output relative to the throttle aperture; an attitude sensing unit that senses the attitude of the stand; a count unit that counts the number of times of displacement between the support attitude and the separation attitude of the stand during the execution of the first mode on the basis of the sensing results by the attitude sensing unit; and a mode switching unit that switches the mode being executed by the motor control unit to the second mode in the case in which a first condition is satisfied, the first condition including that, as a necessary condition, the number of times of displacement counted by the count unit satisfies the condition of a prescribed number of times.
B60L 15/20 - Methods, circuits or devices for controlling the propulsion of electrically-propelled vehicles, e.g. their traction-motor speed, to achieve a desired performance; Adaptation of control equipment on electrically-propelled vehicles for remote actuation from a stationary place, from alternative parts of the vehicle or from alternative vehicles of the same vehicle train for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
Provided is a power control system capable of controlling a plurality of proportional charging/discharging controllers while suppressing the occurrence of mutual interference in DC voltage feedback control. A power control system (100) is connected to a power supply DC line (LW). A plurality of proportional charging/discharging controllers (14, 22, 130) and a load (30) are connected to the power supply DC line, said proportional charging/discharging controllers being connected to a plurality of respective power supply sources (12, 20, 50) including a commercial power supply (20) and at least one or more power generation devices (12) including a renewable energy utilizing power generation device. A capacitor (110) is electrically connected to the power supply DC line so that the DC-converted voltage level difference between the power supply DC line and a load does not fluctuate. The power control system comprises a control unit (120) that controls the plurality of proportional charging/discharging controllers and performs a DC voltage feedback control on only one specific controller (130) of the plurality of proportional charging/discharging controllers to bring the voltage of the power supply DC line close to a target voltage.
The present invention improves output characteristics of a storage cell. The storage cell comprises a first electrode having one polarity and a second electrode having the other polarity of a positive polarity and a negative polarity. The first electrode has a first current-collecting foil on which a plurality of first through holes are formed, and a pair of first active material layers respectively formed on both surfaces of the first current-collecting foil and having different output characteristics. The second electrode has a pair of second active material layers arranged facing each of the pair of first active material layers. At least one of a recess and a second through hole is formed on the surface of at least one of the pair of first active material layers.
H01M 10/0585 - Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
Provided is a transmission device (T) in which an input gear (Gi) rotated by motive power from a motive power source (M) and a counter gear (Gc) that rotates about an axis parallel to the rotation axis of the input gear are in mesh with each other and are disposed inside a transmission case (Ct), wherein the transmission case (Ct) has a first oil-catching part (H1) capable of catching oil splashed from the input gear (Gi), an oil inlet (H1i) of the first oil-catching part (H1) is located on the front side of the input gear (Gi) in the forward rotation direction on a common tangent line between the pitch circles of the input gear (Gi) and the counter gear (Gc) when viewed from the axial direction of the input gear (Gi), and the transmission case (Ct) is provided with a lubricated part that is lubricated with the oil caught in the first oil-catching part (H1). As a result, even when the input gear rotates at a high speed, oil splashing in great amounts from the input gear after the input gear and the counter gear mesh together can be efficiently caught in the first oil-catching part and supplied to the lubricated part, and the splashed oil from the input gear can be effectively used for lubricating the lubricated part.
Provided is a transmission device in which a large-diameter gear meshes with a pinion midway along a specific semiperimeter region in which a toothed surface moves toward the upper end of the large-diameter gear from the lower end thereof in conjunction with forward movement. The pinion (Gcp) and the large-diameter gear (Gf) are configured from helical gears, and are disposed such that oil on the toothed surface is pushed out from a meshing section (40) to one side of the pinion in the axial direction during the forward movement of the gears. A flow-regulating wall (Bc1) facing the oil that has been pushed out from the meshing section to the one side in the axial direction is disposed adjacent to the end surfaces on the one side in the axial direction of the teeth of the pinion (Gcp), and is formed in a shape capable of covering as far as the tooth tip portions of the end surfaces. Accordingly, the oil that has been pushed out from the meshing section to the one side of the pinion in the axial direction during the forward movement of the large-diameter gear is restricted from flowing towards the one side in the axial direction by the flow-regulating wall facing the oil, and thus more easily flows out to the toothed section-side of the large-diameter gear due to congestion at the front side of the flow-regulating wall; therefore, the oil is easily carried around and lifted up by the large-diameter gear, increasing the amount of oil pushed up to a gear upper section by the large-diameter gear.
A case C of a power unit of the present invention comprises: an oil supply passage 17, 90 for supplying part of the oil of a transmission mechanism chamber 10 to a bearing of a motor output shaft 26; an oil return passage 16 for returning oil to the transmission mechanism chamber from a motor space 20; and a partition wall 12s that has one side surface facing the transmission mechanism chamber and another side surface facing the motor space. The one side surface of the partition wall 12s and a lid 80 coupled to the one side surface define a breather chamber 60 that is shielded from the transmission mechanism chamber, and an inlet 60i of the breather chamber opens on the other side surface of the partition wall 12s and communicates through to the motor space. This makes it possible to curb penetration, into the breather chamber, of oil dispersing from respective gears of a gear transmission mechanism in a transmission case, as well as to reduce the risk of oil blowout from the breather chamber. Moreover, because the breather chamber is defined by the one side surface of the partition wall of the transmission case and the lid coupled thereto, a hollow structure of the breather chamber that is isolated from the transmission mechanism chamber is easily obtained without further complicating the partition structure or molding steps of the transmission case.
The present invention achieves both suppression of deterioration of a first cell and suppression of reduction of the volume energy density of a power storage cell. This power storage cell comprises a first positive electrode, a second positive electrode having lower capacity and lower internal resistance than the first positive electrode, and a negative electrode. In this power storage cell, a first cell composed of the first positive electrode and the negative electrode has relatively high internal resistance and exhibits a relatively high capacitive characteristic. A second cell composed of the second positive electrode and the negative electrodes has relatively low internal resistance, and thus exhibits a relatively high output characteristic. A first capacity ratio is the ratio of the capacity of the second positive electrode to the capacity of the first positive electrode, and is 0.7-10% inclusive.
rpp) of the relative curvature (κ) in a section between the pitch point (Pp) and an end point (Pe1) of the dedendum side of the first gear (G1). With the configuration above, it is possible to secure the required tooth surface strength of the addendum and simultaneously improve the meshing ratio.
The present invention addresses the problem of precisely estimating SOC based on an electric current integration method. This storage battery management device manages a storage battery having an SOC-OCV characteristic that includes a first region in which an OCV change rate, which is the absolute value of an amount of change in the OCV in relation to an amount of change in the SOC, is equal to or less than a prescribed value, and a second region in which the OCV change rate exceeds the prescribed value. The storage battery management device comprises: a coulomb counting processing unit that calculates the capacity of the storage battery by integrating the electric current measured by an electric current measuring unit; an SOC estimating unit that estimates the SOC of the storage battery on the basis of the SOC at a reference time, an amount of change in the capacity of the storage battery from the reference time, and the FCC of the storage battery; an OCV acquisition unit that acquires the OCV of the storage battery; and a correction unit that corrects, on the basis of an SOC for correction, the storage battery FCC used by the SOC estimating unit in a case in which a correction condition has been satisfied that includes the required condition that the SOC for correction, which is an SOC corresponding to the storage battery OCV acquired by the OCV acquisition unit, is within the second region.
G01R 31/374 - Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] with means for correcting the measurement for temperature or ageing
G01R 31/3828 - Arrangements for monitoring battery or accumulator variables, e.g. SoC using current integration
38.
STORAGE BATTERY MANAGEMENT DEVICE AND METHOD FOR MANAGING STORAGE BATTERY
The present invention precisely carries out SOC estimation based on a current integration method. A storage battery management device according to the present invention is provided with: an SOC estimation unit which estimates the accumulated SOC of a storage battery on the basis of a reference-time SOC, the amount of change in the capacity of the storage battery since the reference time as calculated by a coulomb counting processing unit, and the FCC of the storage battery; a remaining capacity acquisition unit which acquires a remaining capacity corresponding to the OCV of the storage battery; a first SOC correction unit which corrects the accumulated SOC on the basis of a predetermined first correction SOC in cases where a first correction condition, which includes, as a requisite condition, that the OCV of the storage battery be at least an OCV determination value, has been satisfied; and a second SOC correction unit which estimates a second correction SOC on the basis of the FCC of the storage battery and the remaining capacity of the storage battery acquired by the remaining capacity acquisition unit, and corrects the accumulated SOC on the basis of the second correction SOC, in cases where a second correction condition, which includes, as a requisite condition, that the OCV of the storage battery acquired by an OCV acquisition unit is less than the OCV determination value, has been satisfied.
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
G01R 31/3828 - Arrangements for monitoring battery or accumulator variables, e.g. SoC using current integration
The present invention simplifies the hardware configuration of an electric power control system. This electric power control system is connected to an electric power supply line between a electric power supply unit and a load. The electric power control system comprises: a capacitor that is electrically connected to the electric power supply line so as to prevent fluctuation of a voltage difference with respect to the load; a proportional charging/discharging controller that is connected to an energy storage medium having an output density lower than that of the capacitor and is connected between the energy storage medium and the electric power supply line; and a control unit that controls at least the proportional charging/discharging controller.
A transmission device is formed by combining a planetary gear-type reduction gear and a differential device, wherein at least one of first and second planetary gear portions in a two-stage planetary gear has gear teeth that receive a thrust load due to meshing with opposing gear, a power-transmission case formed by joining a carrier to a differential case is rotatably supported on a transmission case. A pivot shaft of the planetary gear has one end thereof on the first planetary gear portion side supported on the power-transmission case via a first bearing and the other end on the second planetary gear portion side supported on the power-transmission case via a second bearing, and the thrust loads on one side and on the other side in an axial direction are supported only by the first bearing among the first and second bearings. Thus, a wall portion of the power-transmission case pivotably supporting the second planetary gear portion is reduced in size in the radial direction, contributing to a reduction in size of the transmission case in the radial direction.
F16H 37/08 - Combinations of mechanical gearings, not provided for in groups comprising essentially only toothed or friction gearings with arrangements for dividing torque between two or more intermediate shafts with differential gearing
F16H 57/029 - Gearboxes; Mounting gearing therein characterised by means for sealing gearboxes, e.g. to improve airtightness
F16H 57/037 - Gearboxes for accommodating differential gearing
A transmission device includes a power-transmission case having a carrier of a reduction gear and a differential case joined to the carrier is supported in a transmission case via case support bearings, a specific planetary gear portion of a planetary gear is disposed on one side of a differential mechanism in an axial direction, and the specific case support bearing is disposed on the other side thereof An oil passage-forming body is provided on an inner wall of the transmission case, the oil passage-forming body comprising an oil collection part that opens upward and can collect lubricating oil splashed up in an area around the specific planetary gear portion within the transmission case accompanying rotation of the power-transmission case, and an oil reservoir part that is continuous from the oil collection part, stores lubricating oil collected by the oil collection part, and supplies the lubricating oil to the specific case support bearing.
This power transmission device having a carrier of a speed reducer rotating integrally with a differential case of a differential gear in a transmission case comprises an oil guide (G) provided to an outer peripheral wall of the transmission case. The oil guide (G) has: an oil capturing portion (40) capable of capturing oil in an oil sump portion (O) in a bottom portion of a transmission case (10), the oil being scooped up by a planetary gear (P) as the planetary gear (P) revolves in the forward rotation direction of the carrier (C) while rotating about the own axis thereof in the reverse direction to the forward rotation direction in accordance with the rotation of the carrier (C) in the forward rotation direction; and oil guiding portions (41, 42) for guiding the captured oil to portions (Bc1, Bc2) to be lubricated in the transmission case (10). When viewed from a projection plane perpendicular to a rotary axis (X1) of a power transmission unit (U), the oil capturing portion (40) is disposed in a half peripheral portion of the outer peripheral wall which has the lowermost portion of the oil sump portion (O) set as the origin and which is positioned on the front side in the forward rotation direction. This enables the oil scooped up by the planetary gear to be sufficiently captured by the oil capturing portion of the oil guide even when the planetary gear revolving together with the rotation of the carrier in the same direction rotates about the own axis thereof in the reverse direction to the revolving direction.
In this transmission device, a transmission unit having a differential provided to one axial side and a reduction gear provided to the other axial side is accommodated within a transmission case that has an oil reservoir part at the bottom part thereof. A differential case (20) has a trunk part (20a), an oil inlet (20i) that opens to one axial side thereof, and an oil outlet (20o) that opens to the other axial side thereof. A large-diameter gear part (P1) that revolves in the same direction as a carrier (C) during rotation thereof is disposed such that the lower part of the revolving trajectory of the large-diameter gear part (P1) sinks lower than the reservoir oil level (f) in the oil reservoir part (O) at the bottom part of the transmission case (10). A first oil guide (G1) that captures oil raked up from the oil reservoir part (O) by the large-diameter gear part (P1) due to revolution thereof and guides said oil to the oil inlet (20i) is provided to the transmission case (10) so as to extend toward the one axial side from a position radially outward of the revolving trajectory. It is thus possible to efficiently supply oil raked up by the large-diameter gear part of a planetary gear to inside the differential case even if the oil level of the oil reservoir part is set low, thereby suppressing oil agitation resistance and increasing efficiency of transmission.
In this transmission device, a differential case of a differential accommodated inside a transmission case has a trunk part that can store oil, an oil inlet that opens to one axial side of the differential case, and an oil outlet that opens to the other axial side of the differential case. The differential case (20) is provided with at least part of a contaminant pocket (70) that has an inlet (70i) facing the interior of the trunk part (20a) of the differential case (20) and that can trap contaminants in the oil inside the trunk part (20a). The inlet (70i) is disposed, among the inner surface of the differential case (20), in a maximum inner diameter part (20d) where the centrifugal force during rotation of the differential case (20) most strongly acts, or more toward the oil outlet (20o) in the axial direction than the maximum inner diameter part (20d). Thus, the diffusion of contaminants inside the trunk part is suppressed and reduced differential performance caused by the diffusion of contaminants is also suppressed.
In this transmission device, a transmission unit equipped with a reduction gear and a differential is supported by a transmission case, and a differential case of the differential device is configured as split into first and second cases that define therebetween a mechanism chamber in which oil can be stored at the bottom part thereof. The differential case (20) is configured as split into first and second cases (20A, 20B). A planetary gear (P) has a large-diameter gear part side supported about an axis by a carrier (C) and a small-diameter gear part side supported about an axis by the differential case. The second case (20B) is sandwiched between the first case (20A) and the carrier (C) coupled thereto, and being sandwiched in said manner fixes the second case (20B) to the first case (20A). It is thus possible to retrofit and couple the carrier by which the large-diameter gear part side of the planetary gear is supported about an axis to the first case of the differential case as a component separate from the differential case, and also reduce costs by fixing the second case to the first case with a simple structure that utilizes said carrier.
A transmission device includes a planetary reduction gear and a differential device, wherein a carrier of the reduction gear is dividedly formed from a first carrier portion that supports one end side of a pivot shaft and a second carrier portion that supports the other end side of the pivot shaft, and has a power-transmission case that is supported on a transmission case and includes a power-transmission case main body in which the differential case and the second carrier portion are integrated and the first carrier portion, which is joined to one end wall of the power-transmission case main body, a bearing boss portion is integrally and projectingly provided on a side face, on the sun gear side, of the one end wall, the bearing boss portion extending toward the sun gear side and having an outer peripheral part of one of output shafts rotatably fitted into and supported thereby, the bearing boss portion is present at a position where it overlaps the sun gear at least partially in an axial direction, and an outer peripheral part of the bearing boss portion is relatively rotatably fitted into a center hole of the sun gear.
F16H 57/04 - Features relating to lubrication or cooling
F16H 37/08 - Combinations of mechanical gearings, not provided for in groups comprising essentially only toothed or friction gearings with arrangements for dividing torque between two or more intermediate shafts with differential gearing
F16H 57/037 - Gearboxes for accommodating differential gearing
A transmission device is provided in which a parking mechanism and a breather chamber are provided within a power-transmission case, the breather chamber being present at least above an input gear and providing communication between the interior of the power-transmission case and the exterior of the power-transmission case, wherein the breather chamber, which is present at least above the input gear and providing communication between the interior of the power-transmission case and the exterior of the power-transmission case, extends further outward than the input gear in an arrangement direction of the input gear and the output gear, and part of the parking mechanism is disposed within the breather chamber. Thus, it is possible to increase the capacity of a breather chamber while avoiding an increase in the size of a transmission device.
In the present invention, a relatively larger current is channeled while suppressing generation of heat in a re-usage battery cell to a greater extent than in a prior-art electricity storage device in which only the re-usage battery cell is used. This electricity storage device comprises a battery module including a re-used battery cell, and a re-usage connection body. The re-usage connection body has an electricity storage cell having a lower internal resistance than the battery cell, and a connection part to which an electric connection terminal of the battery module is connected, the re-usage connection body having a configuration in which the battery cell of the battery module connected to the connection part is connected in parallel to the electricity storage cell.
The present invention suppresses the occurrence of an overcurrent state of a secondary battery while suppressing a decline in high-output characteristics caused by a capacitor. This power storage management device manages a power storage unit comprising parallel blocks, in each of which a secondary battery and a capacitor are connected in parallel to each other. The power storage management device comprises: a current measurement part for measuring currents flowing in the parallel blocks; a voltage measurement part for measuring terminal voltages of the parallel blocks; an abnormality determination part for carrying out abnormal-time processing, under the necessary condition that a current flowing in any one of the parallel blocks as measured by the current measurement part has exceeded an overcurrent threshold value; an OCV estimation part for estimating OCVs of the capacitors; and a threshold value change part for changing the overcurrent threshold value in accordance with OCV differences, that is, differences between the OCVs of the capacitors estimated by the OCV estimation part and a reference OCV.
To maintain smooth rotation of a pinion gear, a differential device includes: a differential case including a case main body and a bearing boss protruding from the case main body and rotatably supported about a first rotation axis; a side gear; and a pinion gear. An introduction groove for introducing lubricating oil into the case main body is formed on the bearing boss. An inner surface groove communicating with the introduction groove and extending toward the pinion gear is formed on the case main body. The inner surface groove includes a first groove portion and a second groove portion positioned radially outward from the first groove portion in the radial direction. The shape of at least a part of the first groove portion is a shape over which the lubricating oil is hard to climb during vehicle forward movement as compared with the shape of the second groove portion.
A power transmission device has a hub portion of a ring gear is fixed by a weld portion to a flange portion on an outer periphery of a transmission member, an annular groove that is recessed in the inner side of the axial direction is formed in a side face of the hub portion for making axial positions of the annular groove and the cavity part partially coincide with each other, the hub portion is narrowed partway along a part sandwiched between the cavity part and weld portion and the annular groove when viewed in a cross section transecting the annular groove, and a narrowed portion is set to have a thickness that alleviates residual stress produced around the weld portion of the flange portion by the force with which the flange portion and the hub portion pull each other in response to thermal shrinkage of the weld portion.
The present invention uses a voltage equalization circuit to determine the presence or absence of an abnormality in a current detection part. This power storage management device includes: a voltage detection part; a current detection part; a plurality of transformers having a first winding wire connected in parallel to each power storage element and a second winding wire connected in parallel to a power storage part and the current detection part; and a plurality of switch parts having a first switch connected in series to the first winding wire and/or a second switch connected in series to the second winding wire. The device is provided with a voltage equalization circuit for reducing the voltage difference between a plurality of the power storage elements. When a first abnormality determination condition is satisfied, processing corresponding to abnormality detection in the current detection part is performed, the condition including, as a necessary condition, the detection result detected by the current detection part being out of a normal current range at the time of an on/off operation of a switch part corresponding to a selected target power storage element.
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
53.
STORAGE BATTERY MANAGEMENT DEVICE AND METHOD FOR MANAGING STORAGE BATTERY
This storage battery management device that manages a battery assembly having a plurality of storage batteries connected in series is provided with a control unit, an activation switch, and a power supply activation circuit that turns the activation switch on when an external activation signal becomes an activation logic and maintains the switch in the on state as long as an activation maintenance signal is being input. The control unit has a line switch control unit, an activation maintenance control unit, and an OCV identification unit. The line switch control unit turns a line switch on when the external activation signal becomes an activation logic. The activation maintenance control unit initiates output of the activation maintenance signal to the power supply activation circuit when the external activation signal becomes an activation logic. The OCV identification unit acquires an amount of change in voltage of each storage battery at predetermined time intervals when the external activation signal becomes a stop logic, and when all of the amounts of change in voltage become equal to or less than a predetermined amount of change, records the voltages of the storage batteries as OCV, and stops output of the activation maintenance signal.
H02J 7/02 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
54.
STORAGE BATTERY MANAGEMENT DEVICE, AND MANAGEMENT METHOD FOR BATTERY DEVICE
The present invention effectively lengthens the continuous operation time of a battery pack. This storage battery management device manages a battery pack in which a plurality of storage batteries with an SOC-OCV characteristic including a plateau region are connected in series, and comprises: a voltage equalization circuit that performs constant current control in which the voltage difference between each of the storage batteries is reduced by causing charge to move between storage batteries; a coulomb counting processing unit that calculates the capacity of each storage battery; a target voltage calculation unit that sets a target voltage for each storage battery on the basis of the average voltage and internal resistance of each storage battery; and a voltage equalization control unit that controls the voltage equalization circuit to cause the same to perform the constant current control. When the voltages of the storage batteries have reached the target voltages during the constant current control while the average voltages are within the plateau region, the voltage equalization control unit determines the capacity difference between each storage battery, causes the constant current control to be further performed if the capacity difference is greater than or equal to a first capacity difference, and causes the constant current control to be stopped when the capacity difference reaches a second capacity difference.
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
H02J 7/02 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
In a power transmission device in which a hub portion of a ring gear is fixed by a weld portion to a flange portion on an outer periphery of a transmission member, a positioning outer peripheral part of an outer periphery of the flange portion has a radial direction positioning face that positions the hub portion in a radial direction with respect to the flange portion, and an axial direction positioning face that positions in an axial direction, a first annular recess part is provided in the positioning outer peripheral part, the first annular recess part alleviating stress caused by a pushing load via which the positioning projecting part pushes the radial direction positioning face due to the hub portion receiving a tensile force inward in the radial direction accompanying thermal shrinkage of the weld portion between a first outer peripheral part and the hub portion.
In this bevel gear pair, the tooth tips of first and second gears (G1, G2) are modified, and the ratio of a distance (L1b) from a pitch circle (P1) in the first gear (G1) to a starting position (R1) of tooth tip modification, to a distance (L1a) from the pitch circle (P1) to a tooth tip (T1), is greater than the ratio of a distance (L2b) from a pitch circle (P2) in the second gear (G2) to a starting position (R2) of tooth tip modification, to a distance (L2a) from the pitch circle (P2) to a tooth tip (T2). A bevel gear pair in which smooth meshing can be realized is thereby provided.
F16H 1/14 - Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising conical gears only
In this gear pair in which a first gear and a second gear having a larger number of teeth than the first gear share a line of action (L) where the teeth mesh with each other, at least a portion of the line of action (L) includes a zone along which the pressure angle (α) is not constant. Along an interval on the line of action (L) from the pitch point (Pp) to the end point (Pe1) on the tooth-root end of the first gear (G1), the pressure angle (α) increases monotonically in the broad sense. Due to this configuration, both desired characteristics (for example, strength) and smooth meshing become possible, and it also possible to effectively augment the strength on the tooth-root end of a smaller tooth-number gear (that is, the first gear), which, with the load at the tooth-root end being large, is susceptible to damage.
This differential device is provided with boss portions that are provided in side portions of a differential case capable of rotating about a first axis, oil introducing passages that are provided in the boss portions and can introduce lubricant oil from the outside of the differential case to side gear support surfaces of the differential case internal surfaces, and windows that are formed in the differential case to connect the inside and outside of the differential case to each other, wherein in order to make at least a portion of the oil flowing on the internal surfaces from the side gear support surfaces (S1, S2) to the windows (18) be guided to bypass the windows (18), the internal surfaces (Ci) of the differential case (C) have oil guide portions (50) that at least partially protrude from the internal surfaces toward the first axis (X1) and are provided between the side gear support surfaces and at least portions in the circumference of edge portions of the windows in the axial direction. With said configuration, the oil is introduced from the oil introducing passages of the boss portions to the inside of the differential case via the side gear support surfaces, and therefore even when the flow rate of oil flowing on the differential case internal surfaces via the side gear support surfaces in the axial direction is increased, the outflow of the oil through the windows is suppressed effectively.
A hollow shaft includes a cylindrical main body part and an extremity drawn part that is integrally connected to one end of the main body part on the same axis and whose diameter is made smaller than a diameter of the main body part by drawing processing, wherein an inner peripheral face of the main body part and an inner peripheral face of a base portion, which is continuous with one end side of the main body part, of the extremity drawn part are formed as cut faces that are subjected to cutting processing before the drawing processing, and an inner peripheral face of a tip portion, which is continuous with an extremity side of the base portion, of the extremity drawn part is a non-cut face. Accordingly, the hollow shaft can be molded with high shape precision while maintaining a low drawing ratio for an extremity drawn part.
B21C 37/16 - Making tubes with varying diameter in longitudinal direction
B21C 37/00 - Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
The present invention suppresses the flow of overcurrent to a lithium-ion storage element while exhibiting performance of both a capacity property and an output property. The power storage device of the present invention comprises: a first lithium-ion storage element; a second lithium-ion storage element connected in parallel with the first lithium-ion storage element and having an internal resistance that is less than that of the first lithium-ion storage element; and a first protection part. The first protection portion is disposed in a current path of a parallel circuit configured by the first lithium-ion storage element and the second lithium-ion storage element and cuts off the current path due to the flow of current of a prescribed value or greater.
This differential device is provided with a differential case, a pair of side gears that are supported freely rotatably by the differential case, a plurality of pinion gears that mesh respectively with the side gears, and oil introducing paths that are provided in the differential case so as to introduce a lubricant oil to the side gear-supporting surfaces of the inner surfaces of the differential case from the outside of the differential case, wherein the inner surfaces (Ci) of the differential case (C) in the differential device (D) are provided with: pinion gear-supporting surfaces (P1, P2) that support the pinion gears (22) from the back side thereof; inner surface oil grooves (Gi1, Gi2) that are recesses in the inner surfaces on the outside of the pinion gear-supporting surfaces and communicate with the oil introducing paths (15, 16); pinion gear lubricant oil grooves (Gp) that are recesses in the pinion gear-supporting surfaces with one end thereof being open to the inner surface oil grooves; and discharge paths (O1, O2) that allow the other end of each pinion gear lubricant oil groove to communicate with an inner space (17) of the differential case. With the configuration above, oil from the oil introducing paths can lubricate and cool the back surfaces of the pinion gears sufficiently.
The present invention simplifies the circuit configuration related to a converter. This electric power control system is connected to an electric power supply line between a load and an electric power generation device which generates electric power by utilizing natural energy. This electric power control system is provided with: a power storage unit which comprises a lithium ion capacitor and a lithium ion battery; a DC/DC converter; and a charge/discharge control unit which controls charging and discharging of the power storage unit. The charge/discharge control unit controls charging and discharging of the lithium ion capacitor by connecting the lithium ion capacitor to the electric power supply line via the DC/DC converter, and controls charging and discharging of the lithium ion battery by connecting the lithium ion battery to the electric power supply line via the common DC/DC converter.
This transmission device comprises: a transmission case including at least a first case and a second case that are mutually joined in an attachable/detachable manner; a transmission mechanism that has a transmission shaft rotatable in the transmission case and that is housed in the transmission case; and a parking lock mechanism that can lock the transmission shaft as required and that is housed in the transmission case. In the parking lock mechanism (20) of the transmission device, a rotation fulcrum part (22) of a detent arm (26) is located in the first case (11), while an engagement part of the detent arm and a detent spring (28) is located in the second case (12). The first case (11) is provided with a support protrusion part (40) protruding toward the second case (12) side relative to a mutual mating surface (f) of the first case and the second case. A fixed end (28b) of the detent spring (28) is attached to the support protrusion part (40) on the second case (12) side relative to the mating surface (f). Accordingly, the case size can be reduced and ease of assembly and detent arm operability can be improved.
A motor drive unit in which a reduction gear device includes an input shaft, a counter shaft, and an output shaft that are mutually parallel to each other, and a gear set is constituted by an input gear fixed on the input shaft, first and second intermediate gears on the counter shaft, and an output gear fixed on the output shaft to transmit the rotation of the input shaft to the output shaft while reducing the speed thereof, the motor drive unit comprising one gear set selected from multiple gear sets (G1-G3) having different total reduction gear ratios between the input gear (20) and the output gear (23) and a case (Cr) in which any of the multiple gear sets can be housed and mounted, wherein for each of the multiple gear sets, the center distances between the input shaft (Si), counter shaft (Sc), and output shaft (So) are identical to those in the other gear sets and the gear diameter of at least one of the first and second intermediate gears (21, 22) is different from that in the other gear sets. By adopting the configuration above, the same case can be used for multiple gear sets having different total reduction gear ratios and thus the cost can be reduced.
F16H 57/033 - Series gearboxes, e.g. gearboxes based on the same design being available in different sizes or gearboxes using a combination of several standardised units
This conveying vehicle comprises: a dolly main unit running-enabled via left and right drive wheels; a pair of running motors enabled for rotationally driving the left and right drive wheels independently of each other; left and right forks, extending from a fork base unit and enabled for carrying and supporting a transported object; a raising/lowering drive device that raises and lowers the fork base unit with respect to the dolly main unit; left and right driven wheels attached to the left and right forks; and a raising/lowering link mechanism that raises and lowers the left and right forks with the driven wheels as the fulcrum, in linked movement with the raising/lowering displacement of the fork base unit with respect to the dolly main unit. Provided is the conveying vehicle, wherein: the left and right drive wheels (W1) are attached in a non-steerable manner to the dolly main unit (10); and the left and right driven wheels (W2) are attached in a steerable manner to the left and right forks (F) via support bases (35). Due to this configuration: the need for a swiveling mechanism between the dolly main unit and the left and right drive wheels/the running motors is eliminated, thereby serving to lighten the weight and save on the cost of the vehicle; and moreover, smooth and accurate moving and swiveling of the vehicle to the transported object is made possible, thereby achieving exact positional alignment with the transported object.
B60P 1/02 - Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading with parallel up-and-down movement of load supporting or containing element
Provided is a transmission device in which a planetary reduction gear and a differential device are combined, wherein a carrier (C) of the reduction gear is configured in a divided manner by a first carrier part (C1) supporting one ends of pivot shafts (33) and a second carrier part (C2) supporting the other ends of the pivot shafts, and has a transmission gear case (20), which is supported by a transmission case and includes a transmission gear case body (21) in which a differential case (40) and the second carrier part are integrated, and the first carrier part, which is joined to one end wall (21A) of said body (21). A gear pump chamber (28) is formed between the opposing surfaces of the first end wall (21A) and the first carrier part, planetary gears (P) include a specific planetary gear part (P1) having gear teeth that approach and oppose a peripheral surface of the gear pump chamber, and the specific planetary gear part and the gear pump chamber supply lubricating oil from the outer circumferential side to the center-portion side of the transmission gear case (20). Accordingly, with a simple structure that uses a planetary gear of a reduction gear, lubricating oil can be supplied from the outer circumferential side to the center-portion side of the transmission gear case, and the device structure can be simplified.
Provided is a transmission device in which a planetary reduction gear and a differential device are combined, wherein a carrier (C) of the reduction gear is configured in a divided manner by a first carrier part (C1) supporting one ends of pivot shafts (33) and a second carrier part (C2) supporting the other ends of the pivot shafts, and has a transmission gear case (20), which is supported by a transmission case and includes a transmission gear case body (21) in which a differential case (40) and the second carrier part are integrated, and the first carrier part, which is joined to one end wall (21A) of said transmission gear case body. A bearing boss part (21b1), which extends toward the sun gear side and rotatably mates with and supports the outer circumferential part of one output shaft (51), is integrally provided on a side surface of the one end wall on the sun-gear side in a protruding manner, the bearing boss part is located at a position overlapping at least a portion of the sun gear in the axial direction, and the outer circumferential part of the bearing boss part mates with a center hole (31h) of the sun gear so as to be rotatable relative thereto. As a result of this configuration, the size of the transmission device in the axial direction can be reduced while increasing the support rigidity of the transmission gear case with respect to the sun gear and the output shaft.
A transmission device in which a transmission gear case (in which a carrier of a reduction gear and a differential case are coupled) is supported on a transmission case via a case support bearing, a specific planetary gear part of a planetary gear is arranged on one side of a differential mechanism in an axial direction, and a specific case support bearing is arranged on the other side thereof, wherein an oil passage formation body (T) is provided on an inner wall of a transmission case (10), said oil passage formation body being provided with an oil collection part (Tc) that opens upwards and is capable of collecting lubricating oil splashed up at the periphery of a specific planetary gear part (P1) inside the transmission case (10) in conjunction with rotation of a transmission gear case (20), and an oil reservoir part (Ta) that is continuous with the oil collection part, retains the lubricating oil collected by the oil collection part, and supplies the lubricating oil to a specific case support bearing (Bc2). Thus, lubricating oil slashed up by the specific planetary gear part or the like can be supplied to the specific case support bearing at a distance therefrom, and an oil reservoir surface of the transmission case during transmission can be made lower, thereby increasing transmission efficiency.
A transmission device in which a breather chamber that is located at least above an input gear and that connects the interior of a transmission gear case to the exterior of the transmission gear case, and a parking mechanism, are provided inside the transmission gear case, wherein the breather chamber (BC), which is located at least above the input gear (G1) inside the transmission gear case (10) and that connects the interior of the transmission gear case (10) to the exterior of the transmission gear case (10), protrudes farther to the outside than the input gear (G1) in the direction in which the input gear (G1) and an output gear (G3) are arranged, and a portion of the parking mechanism (20) is arranged inside the breather chamber (BC). Thus, it is possible to increase the capacity of a breather chamber while avoiding an increase in the size of a transmission device.
The present invention provides a transmission device that is obtained by combining a differential gear and a reducer having a two-stage planetary gear, wherein a transmission case (20) has a work window (21w) that opens with such a size as to expose, to the outside of the transmission case (20), the rotational trajectory of at least engagement sections of differential-mechanism constituent gears (43, 44) constituting a differential mechanism (41); and a second planetary gear part (P2) of the reducer (R) and the differential-mechanism constituent gears (43, 44) are arranged in the transmission case (20) such that at least a section of the second planetary gear part (P2) and at least sections of the differential-mechanism constituent gears (43, 44) are opposed to each other via the opening of the work window (21w) and overlap each other in the axial direction. Accordingly, lubricating oil that splatters from the reducer (particularly, the second planetary gear part) can be directly supplied to tooth surfaces of the differential-mechanism constituent gears in the transmission case, and lubricating oil that conversely splatters from the differential-mechanism constituent gears can be directly supplied to the reducer, whereby the lubrication effect for the differential mechanism and the reducer can be increased with a simple structure.
F16H 37/08 - Combinations of mechanical gearings, not provided for in groups comprising essentially only toothed or friction gearings with arrangements for dividing torque between two or more intermediate shafts with differential gearing
F16H 57/04 - Features relating to lubrication or cooling
This transmission apparatus is formed by combining a planetary gear-type reduction gear and a differential device, wherein at least one of first and second planetary gear parts (P1, P2) in a two-stage planetary gear (P) has gear teeth which receive thrust loads through engagement with counterpart gears (31, 32), and a driving case (20) formed by connecting a carrier (C) to a differential case (40) is rotatably supported by a transmission case (10). Pivots (33) of the planetary gear (P) are respectively supported by the driving case (20) at one end on the first planetary gear part (P1) via a first bearing (Bp1) and at the other end on the second planetary gear part side via a second bearing (Bp2), and the thrust loads on one side and the other side in an axial direction are supported only by the first bearing of the first and second bearings. Thus, particularly a wall portion of the driving case pivotably supporting the second planetary gear part is miniaturized in a radial direction, resulting in miniaturization of the transmission case in the radial direction.
F16H 37/08 - Combinations of mechanical gearings, not provided for in groups comprising essentially only toothed or friction gearings with arrangements for dividing torque between two or more intermediate shafts with differential gearing
F16H 1/28 - Toothed gearings for conveying rotary motion with gears having orbital motion
In a differential device in which a working window is provided in a case main body of a differential case that can rotate around a first axis, when viewed on the projection plane, orthogonal to the first axis, among joining parts between a flange portion of the differential case and a ring gear, a specific joining part that is the closest to the working window is positioned further outward than an inner end part of the working window in a direction along a third axis orthogonal to the first axis and a pinion axis, and the working window is positioned further outward, in the direction along the third axis, than an imaginary straight line joining the specific joining part and the first axis. Accordingly, rigidity strength of the differential case is enhanced and concentration of stress is prevented from occurring in the working window of the case main body.
This invention maintains a smooth rotation operation of a pinion gear. The differential device is equipped with: a differential case having a case body and a rotary shaft part that protrudes from the case body and is supported so as to be capable of rotation around a first axis of rotation; a side gear; and a pinion gear. An introduction groove for introducing lubricating oil into an accommodation space of the case body is formed in an inner circumferential surface of the rotary shaft part. An inner-surface groove communicating with the introduction groove and extending toward the back-surface side of the pinion gear is formed in an inner surface of the case body. The inner-surface groove includes a first groove portion and a second groove portion that is positioned on the outside of the first groove portion in the radial direction of the case body. At least a portion of the first groove portion is shaped such that, in comparison with the shape of the second groove portion, the lubricating oil is less susceptible to overflowing when the vehicle is moving.
Provided is a differential device comprising a cast differential case, a differential gear mechanism accommodated in the differential case, and a machined part formed in the differential case by a machining operation after casting, wherein: an inner surface of the differential case has a gear support surface of the differential gear mechanism; a surface to be molded, which is formed with the same molding die (N) during casting of the differential case (3), includes an inner surface (3i) of the differential case (3) and the same die molded outer surface of the differential case (3), which is exposed to the outside; and a pinion gear support surface (9p) on the inner surface (3i) of the differential case (3) is a non-machined surface that is not machined even after casting the differential case (3). Accordingly, when the inner surface of the differential case is machined after the casting, a variation in the machining amount is reduced or a reduction in the machining amount is achieved. Furthermore, when a portion of the inner surface of the differential case serves as a non-machined surface for cost reduction, the accuracy of a relative position between the non-machined surface and the machined part can be improved.
The present invention provides a differential device comprising a cast differential case and a differential gear mechanism stored in the differential case, the inner surface of the differential case having gear support surfaces for the differential gear mechanism, wherein in an inner surface (3i) of a differential case (3) recessed grooves (G1-G3) that pass through at least part of both gear support surfaces (9s, 9p) are formed by sand cores (N), and the recessed grooves (G1-G3) are disposed in positions such that even if parting lines (PL1-PL3) form in the inner surface (3i) of the differential case (3) in correspondence with mold matching surfaces (fc) of core mold halves (C1, C2), the parting lines (PL1-PL3) can be accommodated within the recessed grooves (G1-G3). Thus, even if parting lines remain in the inner surface of the differential case after casting, there is no need to remove the parting lines through after-machining and machining costs can be reduced.
In this power transmission device in which a hub part of a ring gear is fixed by a weld to a flange along the outer periphery of a transmission member, an outer peripheral part (A3) for alignment, on the outer periphery of a flange part (3f), includes a radial alignment surface (A3r) for radially aligning a hub part (Rb) with respect to the flange part, and an axial alignment surface (A3a) for axially aligning same. The outer peripheral part for alignment is provided with a first annular recess (G1) for alleviating stress due to the pressing load from an alignment protrusion (B3) pressing on the radial alignment surface when the hub part undergoes radially-inward drawing force accompanying thermal shrinkage of a weld (3w) between a first outer peripheral part (A1) and the hub part (Rb). Alleviating with the first annular recess the stress caused by the pressing load enables reducing residual stress generated at the axially inner end (3we) of the weld in relation to the drawing force that the hub undergoes accompanying thermal shrinkage. Due to this configuration, the residual stress generated at the axially inner end of the weld due to thermal shrinkage of the weld can thus be reduced.
In this power transmission device in which a hub part of a ring gear is fixed by a weld to a flange part along the outer periphery of a transmission member, a hub part (Rb) is provided, on a lateral face (sr1) thereof, with an annular groove (Gr) recessed axially inward so that the axial loci of the annular groove (Gr) and a cavity (30) partially coincide. The hub part (Rb) seen in a cross-sectional plane slicing through the annular groove (Gr) is constricted midway in a portion thereof that is sandwiched between the annular groove (Gr) and the cavity (30)/a weld (3w), and such a constricted portion (Rbk) is designed to have a thickness that enables reduction of residual stress generated in the environs of the weld (3w) on the flange part (3f) due to forces that mutually draw together the flange part (3f) and the hub part (Rb) and that accompany thermal shrinkage of the weld (3w). Due to this configuration, residual stress generated in the environs of the weld of the flange part due to thermal shrinkage of the weld can be reduced.
In the present invention, a housing includes a first opening in a first edge region facing a pin of a ball stud, the ball stud protrudes from the first opening, a gap is provided between an inner wall of a cavity and an outer wall of a bearing shell, a lining is injected into the gap, and the housing further includes a second opening in a second edge region opposite from the first opening for injecting the lining through the cavity, and one or more structural elements for clamping the lining to the inner wall of the second opening.
Systems and methods for inspecting an object(200) having n-fold rotational symmetry are disclosed. An aspect of the system comprises of an object mount (120) configured to support the object (200). The system also comprises of an imager (140)configured to capture images (152) of the object through one or more image capturing devices(142, 144, 146, 148). A controller (130) is configured to control the capturing of images of the object by controlling the imager to capture images of the object at an initial orientation and at subsequent orientations which are rotationally displaced through a predefined angle from the previous orientation. The system also comprises of a database (160) for storing the captured images of the object and an image processor (180) configured to analyze the captured images and identify anomalies in the object.
G01N 21/88 - Investigating the presence of flaws, defects or contamination
G01N 21/00 - Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
G01N 21/892 - Investigating the presence of flaws, defects or contamination in moving material, e.g. paper, textiles characterised by the flaw, defect or object feature examined
G01N 21/956 - Inspecting patterns on the surface of objects
A differential device includes a differential gear mechanism having a plurality of differential gears, a plurality of differential gear support bodies supporting the plurality of differential gears, and a pair of output gears meshing with each of the differential gears; and a differential case having a support member having a plurality of opposite ends-supporting parts supporting opposite end parts of each of the differential gear support bodies, a first cover member covering a back face of one of the output gears and capable of being joined to the support member, and a second cover member covering a back face of the other output gear and capable of being joined to the support member, wherein a recess portion facing a back face of each of the differential gears is formed in an outer support part, supporting of the differential gear support body on an outer side of the output gear.
An engagement-type clutch mechanism is provided in which due to the movement of a first power transmission member, which is movably supported on a rotating shaft, toward a second power transmission member, a first and second projecting parts provided on opposing faces of a first and second power transmission members are engaged to each other, and the rotation of the second power transmission member is synchronized with the rotation of the first power transmission member, and due to the movement of a sleeve toward the synchronized second power transmission member, a first spline of the first power transmission member is linked to a second spline of the second power transmission member via a to-be-engaged spline of the sleeve, and the rotation of one of the rotating shaft and the second power transmission member is transmitted to the other of the rotating shaft and the second power transmission member.
F16D 11/10 - Clutches in which the members have interengaging parts actuated by moving a non-rotating part axially with clutching members movable only axially
F16D 23/06 - Arrangements for synchronisation with an additional friction cluch and a blocking mechanism preventing the engagement of the main clutch prior to synchronisation
F16D 11/00 - Clutches in which the members have interengaging parts
F16H 63/30 - Constructional features of the final output mechanisms
The present invention readily generates a program required for a test that uses an AI process. An AI processing device 4 in a test system 1 comprises a first communication unit which receives a first program from an information processing device, and a first execution unit which executes the first program. An information processing device 5 comprises: a UI generation unit which causes a display unit to display a first UI screen for allowing a user to enter information relating to the processing content of the first program, and a second UI screen for allowing the user to enter information relating to the processing content of a second program; a program generation unit which generates the first program on the basis of input information about the first UI screen, and also generates the second program on the basis of input information about the second UI screen; and a second communication unit which transmits the first program to the AI processing device, and transmits the second program to a control device. A control device 3 comprises a third communication unit which receives the second program transmitted from the second communication unit, and a second execution unit which executes the second program.
The present invention is to inspect efficiently without degrading inspection accuracy by inspecting using AI processing. The present invention provides an inspection device comprising: a learning unit 11 that uses at least one of non-defectives and defectives of the same kind as an inspection object as supervised data to perform learning for determining a non-defective or a defective and thereby generates a learning model; a calculation unit 12 that outputs numerical data quantitatively expressing the probability of a non-defective or a defective on the basis of an operation result of the inspection object inputted to the learning model; and a determination unit 13 that determines, on the basis of comparison of the numerical data and one or more kinds of thresholds, whether to perform automatic determination of a non-defective or a defective according to the numerical data or manual inspection of a non-defective and a defective.
The present invention increases the stiffness and heat dissipation of a differential case in a differential device in which the differential case is made of light alloy and gears of a differential mechanism are made of steel. A plurality of screw hole bosses (31) having screw holes (28) into which a plurality of bolts (30) fastening a ring gear are screwed, and a first rib (32) integrally connecting the screw hole bosses (31) with each other protrude from a side surface of a flange (11), and a plurality of second ribs (33) integrally connecting the screw hole bosses (31) and a first bearing boss (13) are formed on an outer surface of a differential case (4). A first thick-walled part (40) including a first gear bearing part (21) bearing the back of a pinion gear (19) is formed on a circumferential wall of a differential case body (10), and a second thick-walled part (13b) including a second gear bearing part (22) bearing the back of a side gear (20) is formed on the first bearing boss (13).
A differential device wherein an annular recess is provided to one facing surface among a differential case inner surface and a side gear back surface, a protrusion is provided to the other facing surface, and the annular recess and the protrusion can engage such that when the side gear is in the proper installation location within the differential case, rotation of the side gear is allowed but revolution of the same around a pinion shaft is prevented. In this differential device, among the facing surfaces of the inner surface (8i) of the differential case (8) and the side gear back surface (23f), the one facing surface that has the annular recess (50) has a passage groove (51), which is in communication with the annular recess (50) and has a shape allowing the protrusion (61) to pass therethrough, and the groove width of an opening (e) of the passage groove (51), said opening (e) facing the annular recess (50), is smaller than the outer diameter of the annular recess (50). Consequently, even when an annular recess and a protrusion are specially provided to these facing surfaces in order to prevent slippage of the side gear, there is no need to secure a wide assembly space for the side gear between the differential case inner surface and a pinion gear.
Provided is a hollow shaft comprising: a cylindrical body part (6); and a tip throttle part (7) coaxially integrated to one end of the body part (6) and made to have a smaller diameter than the body part (6) by throttle processing, wherein the inner circumferential surface (6i) of the body part (6), and the inner circumferential surface (7bi) of a base portion (7b) of the tip throttle part (7) extending to one end of the body part (6) are cut-surfaces cut before throttle processing, and the inner circumferential surface (7ai) of a tip portion (7a) extending to the tip side of the base portion (7b) of the tip throttle part (7) is a non-cut surface. Accordingly, a predetermined small inner diameter can be obtained while reducing the throttle ratio of the tip throttle part, the hollow shaft can be molded with high dimensional accuracy, and a stress concentration associated with throttle processing at the boundary between the tip throttle part and the cylindrical body part can be suppressed, thereby increasing the rigidity and strength of the hollow shaft.
B21C 37/16 - Making tubes with varying diameter in longitudinal direction
B21D 51/10 - Making hollow objects characterised by the structure of the objects conically or cylindrically shaped objects
B23B 5/38 - Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor for turning specially-shaped surfaces by making use of relative movement of the tool and work produced by geometrical mechanisms, i.e. forming-lathes for turning conical surfaces inside or outside, e.g. taper pins
B23P 23/04 - Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass for both machining and other metal-working operations
Regarding a differential device in which a pinion shaft in a regular mounting position overlaps with a ring gear fixed to a differential case when viewed in a projection plane orthogonal to the pinion shaft, a differential case (8) is provided with a shaft insertion hole (81) constituting one pinion shaft support portion (H1), and the shaft insertion hole has an insertion allowance hole portion (81a) into which a pinion shaft (21) is inserted from the outside of the differential case without interfering with a ring gear (9), and a rotation allowance hole portion (81b) that allows the pinion shaft to rotate toward a regular mounting position. An inner surface (8i) of the differential case is formed in a shape that does not hinder the rotation of a side gear (23) and a pinion gear (22) within the differential case when the pinion shaft rotates to the regular mounting position. This allows the pinion shaft to be easily assembled in the regular mounting position without interfering with the ring gear, and the pinion gear and the side gear can be set in a pre-geared state in the differential case before the pinion shaft is assembled to enhance the assembly workability.
In this differential gear in which at least a portion of a pinion shaft overlaps a ring gear when viewed in a projection surface perpendicular to the pinion shaft at a regular attachment position, a differential case (8) has a shaft insertion hole (8bh) which is spaced apart from pinion shaft support parts (81, 82) and through which the pinion shaft (21) can pass, the shaft insertion hole is present at a position where the pinion shaft is allowed to be inserted into a pinion gear (22) inside the differential case without interfering with the ring gear (9) up to a predetermined insertion end position (21E) from the outside of the differential case, and the inner surface of the differential case has a shaft movement groove (41) that can receive both end sections of the pinion shaft inserted up to the insertion end position (21E), and allows both the end sections to move from the receiving position to the pinion shaft support part. Accordingly, the limitation in the shape of the ring gear and the like can be reduced without a need to expand the hole of the differential case serving as the pinion shaft support part to avoid interference with the ring gear when assembling the pinion shaft.
In a differential device, a notch part (K) provided in one (C1) of case half-bodies in a differential case (C), and an engagement member (9) which engages an axial part (24a) of a pinion shaft (24) with the notch part, are provided. The notch part has a first notch portion (K1) which has an open end at a surface thereof opposite the other case half-body (C2) and extends in an axial direction, and in which the axial part can be passed, and a second notch portion (K2) which is linked to the first notch portion and is formed wider than the first notch portion. When the axial part is inserted into a support hole (9h) of the engagement member and the engagement member is fitted into and attached to the second notch portion, the axial part is engaged with and fixed to the second notch portion through the engagement member, so that the first notch portion is allowed to always connect the inside and outside of the differential case together in the assembled state of the differential device with both of the case half-bodies linked together. Thus, provided is a differential device which has a simple structure, and in which the lubricity of a differential mechanism is good and it is possible to limit the axial movement of an axial part of a pinion shaft in a notch part of a case half-body.
In a differential device (10) in which a differential case (C) includes a pair of case half-bodies (C1, C2) adjacent to each other in an axial direction, one (C1) of the case half-bodies has a notch part (K) which has an open end (Ko) at a surface thereof opposite the other case half-body (C2) and extends in the axial direction, and into which an axial part (24a) of a pinion shaft (24) can be inserted, the other case half-body (C2) has a support protrusion part (32t) which is fitted into the notch part in the axial direction. When the differential device is assembled with the pair of case half-bodies joined together, the axial part of the pinion shaft inserted in the notch part is sandwiched between the support protrusion part and the notch part, so that the pinion shaft is fixed to the differential case. Thus, provided is a differential device in which when a pair of case half-bodies are joined together, the axial movement of an axial part of a pinion shaft in a notch part of the case half-bodies can be limited, resulting in good assembly workability and simple structure.
The differential device measuring tool measures an inflow amount of lubricating oil flowing into a housing space through a communication hole during the rotation of a differential case having a case main body in which the housing space and the communication hole are formed and a bearing boss having a through-hole protruding from the case main body and communicating with the housing space. The measuring tool has a collecting portion and a deriving portion. The collecting portion does not interfere with the rotating differential case in the housing space in which the differential gear mechanism is not housed, and has a recess opening and collects the lubricating oil flowing into the housing space through the communication hole. The deriving portion is inserted through the through-hole of the bearing boss and have a deriving flow channel. The deriving flow channel communicates with the recess, and extends to the outside.
A differential device includes a ring gear receiving a rotational driving force from a drive gear, a differential case rotating integrally with the ring gear around a predetermined axis, and a differential mechanism installed within a barrel part of the differential case. The ring gear includes a gear portion meshing with the drive gear, and a rim portion that is formed integrally with an inner periphery of the gear portion and is fitted, in a non-welded state, onto a maximum diameter outer peripheral portion of the barrel part or a predetermined outer peripheral portion having a smaller diameter than the maximum diameter outer peripheral portion. The rim portion has a to-be-fixed portion welded to the barrel part at a position spaced in an axial direction from a fitting part via which the rim portion and the barrel part are fitted, the position being further radially inward than the fitting part.
B60K 17/346 - Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having a transfer gear the transfer gear being a differential gear
In accordance with forward rotation and reverse rotation of an electric motor (4), a shift spindle (5) is shift-turned from an original position to cause a transmission to shift speeds upwards or downwards. The shift spindle (5) is constantly urged to snap back to the original position by an original-position-restoring spring mechanism (31). A shift clutch mechanism (28) is placed within a shift transmission mechanism (12) that links the electric motor (4) and the shift spindle (5) so as to enable transmission therebetween, and the shift clutch mechanism (28) is controlled by a control device (40) so as to go into a connecting state when the shift spindle (5) is caused to shift-turn by the electric motor (4), and a blocking state when the shift spindle (5) is caused returned by the original-position-restoring spring mechanism (31).
This electric transmission operation device is provided with: a shift transmission mechanism (12) that enables transmission between a starter motor (4) and a shift operation member (5); a shift clutch mechanism (28) that is interposed in the shift transmission mechanism (12) and that enters into a disconnected state when the engine starts; and a control device (40) that, when a speed-change command means (42, 43) outputs a speed-change command signal, controls the shift clutch mechanism (28) so that the same is in a connected state and controls the operation of the starter motor (4), in order to drive the shift operation member (5). Also provided is a starter restricting means (45) that invalidates an ON operation of a starter switch (41) at least when the shift clutch mechanism (28) is in a connected state.
F16H 61/28 - Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
F02N 11/00 - Starting of engines by means of electric motors
F16H 63/18 - Multiple final output mechanisms being moved by a single common final actuating mechanism the final output mechanisms being successively actuated by progressive movement of the final actuating mechanism the final actuating mechanism comprising cams
This electric gear-shifting device is provided with: a starter motor (4) that is capable of turning in forward and reverse directions and capable of cranking an engine by driving a starter driven gear (3); a shift spindle (5) that causes a gear shift in a transmission (29) through a gear shift operation which results in turning by a prescribed angle from a home position; a shift transmission mechanism (12) that links the starter driven gear (3) and the shift spindle (5) so as to allow power to be transmitted therebetween; a shift clutch mechanism (28) that is provided to the shift transmission mechanism (12) and that is for causing engagement or disengagement between the starter driven gear (3) and the shift spindle (5); and a control device (40) that performs control so as to set the shift clutch mechanism (28) into a disengaged state when the engine is started and into an engaged state when shifting operation of the shift spindle (5) takes place after the engine has started.
In this differential device provided with a pair of side gears, a plurality of pinion gears, and a pinion shaft, the pinion shaft (30) is provided with: a plurality of shaft sections (31) that rotatably fit and support the plurality of respective pinion gears (40); and an annular support section (32) that connects the plurality of shaft sections (31) to each other. An annular recessed section (32d) is formed in the inner peripheral surface of the support section (32), the pinion shaft (30) has oil guide sections (30h, 35) that guide the lubricating oil in the recessed section (32d) toward the fitted sections between the shaft section (31) and the pinion gears (40), and an inner end section (20bi) of at least one side gear (20) extends to an inner space of the support section (32) and is positioned within the width of the recessed section (32d) in the axial direction of the rotary shafts (S1, S2). Accordingly, the lubricating oil flowing out from the inner end section of the side gear is efficiently collected inside the recessed section of the inner periphery of the support section in the pinion shaft, and can be sufficiently supplied to rotary sliding sections between the pinion gears and the shaft section.
A differential device includes a plurality of differential gears, one or a plurality of differential gear support members supporting the differential gears respectively, a support part supporting the differential gear support members, a pair of output gears meshing with each of the differential gears, a washer disposed on the output gears, one of cover members covering the back face side of the one of the output gears and has part of a planetary carrier and another cover member covering a back face side of the other output gear, one of the cover members formed on one of the output gears an abutment part that receives the washer, a plurality of through holes provided at intervals in a peripheral direction at positions where at least part thereof overlaps the abutment part, and a plurality of recess parts provided in parts where the through holes and the abutment part intersect.
F16H 37/08 - Combinations of mechanical gearings, not provided for in groups comprising essentially only toothed or friction gearings with arrangements for dividing torque between two or more intermediate shafts with differential gearing
F16H 48/40 - Constructional details characterised by features of the rotating cases
A differential device includes a plurality of differential gears, a plurality of differential gear support members respectively supporting the plurality of differential gears, a pair of output gears meshing with each of the plurality of differential gears, a support member having a plurality of opposite ends-supporting parts supporting opposite end parts of the respective differential gear support member, and a space being formed in a middle part of the support member, a recess part being formed between two of the opposite ends-supporting parts of the support member that are adjacent to each other, the recess part extending from an outside in a radial direction of the support member toward an inside in the radial direction, each of the plurality of opposite ends-supporting parts having one support portion supporting at least one end part of the differential gear support member, and a through hole being formed in the one support portion.
A transmission device is provided in which a support shaft is supported by a carrier, has planetary gears, supports the planetary gears, and is provided with an oil hole and a discharge hole communicating with the oil hole and having an outer end opening on the support shaft, wherein the support shaft has the oil hole, a discharge hole having an inner end communicating with the oil hole and having an outer end opening on the support shaft, and an engagement part provided on one end portion of the support shaft, the other end portion of the support shaft is fixed to the carrier, and a to-be-engaged part is provided on the transmission member, the engagement part engaging with the to-be-engaged part for positioning the support shaft at a position in which the outer end of the discharge hole faces outward in a radial direction of the carrier.
F16H 57/04 - Features relating to lubrication or cooling
F16H 1/28 - Toothed gearings for conveying rotary motion with gears having orbital motion
F16H 57/08 - General details of gearing of gearings with members having orbital motion
F16H 37/04 - Combinations of toothed gearings only
F16H 37/08 - Combinations of mechanical gearings, not provided for in groups comprising essentially only toothed or friction gearings with arrangements for dividing torque between two or more intermediate shafts with differential gearing
A differential device in which the differential case is formed divided into a pair of half-cases, wherein the differential case (C) is formed by a pair of half-cases (C1, C2) which are joined to each other in a state in which the opening end portions thereof are facing each other in the axial direction. An inner circumferential surface (C2i) of at least one half-case (C2) is formed by lathe machining in which the rotational axis (CL) of the object being machined is aligned with the rotational axis (first axis X1) of the differential case. The one half-case (C2) has a wall section (W2) for which the position of an outside surface (ws) is determined such that an oil hole (61) running from the inside to the outside of the one half-case (C2) is formed by the lathe machining. Thus, an oil hole in the half-case can be formed without additional machining by utilizing lathe machining on an inner circumferential surface of the one half-case, and lubricating oil inside the differential case can be discharged smoothly to the outside of the differential case from the oil hole.
patents
