A blower includes a motor having a shaft and a stator, an impeller connected to and rotating about the shaft, a first housing between the motor and impeller, and a second housing opposite to the first housing across the motor. The second housing includes a bearing holding portion holding a bearing of the shaft, a stator holding portion outside the bearing holding portion and holding the stator, and a coupling portion coupling the bearing holding portion and stator holding portion. The dimension in the axial direction of the shaft is a first dimension and the dimension in the circumferential direction of the shaft is a second dimension among dimensions of the end portion of the coupling portion on the bearing holding portion side. The first dimension is smaller than the second dimension. A portion of the coupling portion has a dimension in the axial direction smaller than the first dimension.
F04D 25/06 - Units comprising pumps and their driving means the pump being electrically driven
A47L 5/22 - Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
A motor includes a rotor, a stator, and a labyrinth portion. The rotor is rotatable about a central axis extending in an axial direction. The stator includes a stator core. In the stator core, a labyrinth portion in which coils arranged in a circumferential direction are located includes a pair of metal cylindrical portions surrounding the central axis. The pair of metal cylindrical portions includes a pair of opposing surfaces that oppose each other in a radial direction with a gap therebetween, and one of the opposing surfaces surrounds the other.
H02K 5/10 - Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. of water or fingers
H02K 1/18 - Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
H02K 5/15 - Mounting arrangements for bearing-shields or end plates
A rotor rotatable about a central axis extending in an axial direction includes a yoke that is a cylindrical magnetic body extending in the axial direction. A plurality of ridge portions of the yoke are connected to one axial end of the yoke cylindrical portion in a cylindrical shape and extending in the axial direction, and are arranged at intervals in the circumferential direction. In each ridge portion, a protrusion protrudes radially inward from one axial end of the yoke cylindrical portion. Further, an extension extends in the other axial direction from the radially inner end of the protrusion along the radially inner surface of the yoke cylindrical portion. A magnet is located between the extensions adjacent to each other in the circumferential direction. The ridge portion is integral with the yoke cylindrical portion to define a single structure.
H02K 1/30 - Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures using intermediate parts, e.g. spiders
H02K 15/03 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
H02K 21/22 - Synchronous motors having permanent magnetsSynchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos
09 - Scientific and electric apparatus and instruments
Goods & Services
“AC and DC electric motor control systems (drive systems) and services, industrial machinery diagnostic, data management and productivity equipment, and software, and any related or similar equipment and pulse generators (encoders) for industrial motor or motion control. In addition pulse generators (encoders) sold individually for aerospace applications are included in Industrial Automation Products.
A flight vehicle includes a driver, a battery, a main body, a leg, and an annular power receiving coil. The driver is operable to rotate a rotor blade about a rotation axis. The battery is chargeable/dischargeable and supplies power to the driver. The main body accommodates the battery. The leg supports the main body during landing. The power receiving coil is electrically connected to the battery. The leg includes a landing portion that contacts the landing surface during landing. At the time of landing, the central axis of the power receiving coil extends parallel or substantially parallel to a normal direction of the landing surface. The power receiving coil is located on or in the landing portion.
B64U 50/38 - Charging when not in flight by wireless transmission
B60L 50/60 - Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
B60L 53/126 - Methods for pairing a vehicle and a charging station, e.g. establishing a one-to-one relation between a wireless power transmitter and a wireless power receiver
B64U 101/60 - UAVs specially adapted for particular uses or applications for transporting passengersUAVs specially adapted for particular uses or applications for transporting goods other than weapons
H02J 50/12 - Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
An aspect of a signal generation device of the present invention includes a processing device that calculates angle information indicating a mechanical angle of a rotary shaft, and generates a first signal in which a waveform of one electrical angle cycle appears N times (N is an integer of one or more) in one mechanical angle cycle, and a second signal different in phase by 90 degrees in electrical angle from the first signal, based on a calculation result of the angle information.
G01B 7/30 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapersMeasuring arrangements characterised by the use of electric or magnetic techniques for testing the alignment of axes
B66B 1/34 - Control systems of elevators in general Details
G01D 5/14 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
One embodiment of an actuator according to the present invention is provided in a steer-by-wire type steering device mounted in a vehicle, and generates a steering reaction force on a steering wheel of the vehicle. The actuator is provided with a motor for generating the steering reaction force, around a central axis, in the steering wheel. The motor has a rotor and a stator. The stator is disposed facing the rotor in the axial direction. In the actuator according to the present invention, a speed reduction mechanism is not provided between the motor and the steering wheel.
A control device that controls a steering mechanism mounted on a vehicle includes a first assist controller to execute lane keeping control and generate a first input value. The first assist controller includes a vehicle state calculator to calculate a yaw rate target value and lateral displacement, a yaw rate controller to generate a yaw rate command value based on the yaw rate target value, and a lateral displacement controller to generate a lateral displacement command value based on the lateral displacement. The yaw rate controller includes a yaw rate adjuster to adjust the yaw rate command value according to a frequency. The lateral displacement controller includes a lateral displacement adjuster to adjust the lateral displacement command value according to a frequency.
A motor control device that controls a motor includes a calculator to calculate angle information related to a rotation angle of a rotor of the motor based on an output from a magnetic sensor, and a corrector to correct the angle information calculated by the calculator. The magnetic sensor is a sensor that includes a magnetoresistance effect element and outputs signals of two systems out of phase with each other by 180°. The corrector corrects the angle information using a correction amount expressed by a function including a current value of a motor current supplied to a stator of the motor and a phase angle of the motor current, a current value of a power source current supplied to the motor control device, and a mechanical angle of the rotor calculated based on an output from the magnetic sensor.
H02P 21/00 - Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
H02K 9/22 - Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
H02K 11/01 - Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for shielding from electromagnetic fields
H02K 11/215 - Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
H02K 11/30 - Structural association with control circuits or drive circuits
H02P 21/06 - Rotor flux based control involving the use of rotor position or rotor speed sensors
H02P 21/14 - Estimation or adaptation of machine parameters, e.g. flux, current or voltage
H02P 21/22 - Current control, e.g. using a current control loop
A refrigerant circulation device includes a primary flow path serving as a flow path of a primary refrigerant, a secondary flow path serving as a flow path of a secondary refrigerant, a heat exchanger connected to the primary flow path and the secondary flow path, a pump connected to the secondary flow path, and a housing including an accommodation region extending in a first direction and a second direction intersecting each other and having a dimension longer in the first direction than in the second direction. The housing accommodates the primary flow path, the secondary flow path, the heat exchanger, and the pump in the accommodation region. An entirety of the heat exchanger is positioned on one side in the second direction relative to the pump.
One embodiment of the motor according to the present invention is a motor which is provided to a steer-by-wire type steering device installed in a vehicle and which generates a steering reaction force in a steering wheel of the vehicle, the motor comprising: a rotor that can rotate around a central axis; a stator that faces the rotor with a gap therebetween; and a bearing that rotatably supports the rotor. The rotor has a motor shaft that extends in the axial direction of the central axis and a rotor body that is fixed to the motor shaft. The stator is disposed so as to face the rotor body in the axial direction and has an annular shape surrounding the motor shaft. At least part of the bearing is located inwardly of the stator in the radial direction.
One embodiment of this motor is to be provided to a steer-by-wire steering device that is installed on a vehicle. The motor generates steering reaction force at a steering wheel of the vehicle and comprises a rotor that can rotate around a center axis and a stator that is opposite the rotor with a gap therebetween. The rotor has a motor shaft that extends in the axial direction of the center axis and a rotor body that is fixed to the motor shaft. The stator is provided opposite the rotor body in the axial direction. The motor shaft is directly connected to the steering wheel.
A motor includes a rotor, a stator, and a casing. The stator includes an iron core and a resin portion covering the iron core. The resin portion includes an abutting portion to abut against a bottom of the casing on one axial side in the casing. The abutting portion is connected in a ring shape around the entire circumference of a central axis, and is closer to a radially inner side than a radially central position of the stator. There is a gap between one axial side of the stator and the casing in the axial direction, and the gap defines a first space. The abutting portion is located on a radially inner side of the first space. The motor is able to prevent debris from invading the rotor.
H02K 5/10 - Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. of water or fingers
An electric power unit accommodates an electric motor in a first portion of a housing, and an inverter in a second portion of the housing. An upper surface opening portion of the second portion is covered with an inverter cover having a flat plate shape. A first region, a second region, and a third region sandwiched between the first region and the second region are formed on an upper surface of the inverter cover. A first connection portion is arranged in the first region. Second connection portions are arranged in the second region. A plurality of ribs are arranged in parallel in the third region. The first rib having one longitudinal end portion connected to the first connection portion and the second rib connected to the second connection portions are arranged in a direction in which the first rib and the second rib are arranged in parallel.
A joint assembly includes a joint including a flow path penetrating therethrough, and a fixing portion to which the joint is attached. The joint includes at least two mounting portions to which a tube is mounted, and an intermediate portion located between the at least two mounting portions. The fixing portion extends in a first intersecting direction intersecting the flow path and abuts on the intermediate portion.
An electric motor includes a stator assembly. The stator assembly includes a stator body and a generally toroidal stator ring. The stator body includes a core and a plurality of electrically conductive wires wound about the core. Each of the electrically conductive wires includes a first wire end projecting from the stator body at a predetermined first wire end location. The stator ring defines a plurality of arcuately spaced apart first terminal pockets, each configured to receive a wire-connecting terminal. The stator ring is oriented relative to the stator body such that the first terminal pockets are disposed in predetermined first terminal pocket positions correlating to the predetermined first wire end locations. Each of the first wire ends extends into a respective one of the first terminal pockets.
H02K 3/34 - Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
H02K 3/50 - Fastening of winding heads, equalising connectors, or connections thereto
H02K 5/22 - Auxiliary parts of casings not covered by groups , e.g. shaped to form connection boxes or terminal boxes
According to the present invention, a stator core, a coil part, and a circuit board of a motor are accommodated in a lidded cylindrical cover member and are covered with a covering member that fills the inside of the cover member. A guide part of the cover member is disposed at an end part on one side in the axial direction of a board accommodation part that surrounds and thereby accommodates the circuit board. A lead wire is led from the circuit board to the outside of the cover member, and the guide part accommodates the lead wire and guides the lead wire to the outside in the radial direction. An end part on the inside in the radial direction of a side wall part of the guide part is connected to the end part on the one side in the axial direction of the board accommodation part. An end part on the one side in the axial direction of the side wall part is positioned further to the one side in the axial direction than the end part on the one side in the axial direction of the board accommodation part.
H02K 5/22 - Auxiliary parts of casings not covered by groups , e.g. shaped to form connection boxes or terminal boxes
F04D 25/08 - Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
H02K 5/10 - Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. of water or fingers
A substrate of this motor is disposed on one side of a stator in an axial direction and widens in a direction crossing a center axis. A heat dissipation member is disposed between the stator and the substrate. The stator has a first housing and a second housing. The first housing has a lid-equipped cylindrical shape that opens toward one side in the axial direction and surrounds a stator core. The second housing is connected to the first housing and sandwiches the stator core between the second housing and the first housing in the axial direction. The heat dissipation member is in contact with the second housing and a circuit element mounted on the other end surface of the substrate in the axial direction.
H02K 11/33 - Drive circuits, e.g. power electronics
A47L 9/00 - Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating actionStoring devices specially adapted to suction cleaners or parts thereofCarrying-vehicles specially adapted for suction cleaners
F04D 29/58 - CoolingHeatingDiminishing heat transfer
H02K 7/14 - Structural association with mechanical loads, e.g. with hand-held machine tools or fans
This multi-motor system comprises a host device and a plurality of motor units. The plurality of motor units communicate with the host device. Each of the plurality of motor units is assigned an identifier for enabling unique identification of the relevant motor unit within a communication network. The communication network includes the host device and the plurality of motor units. Each of the plurality of motor units has a motor, a storage device, and a communication circuit. The storage device stores the identifier. The communication circuit transmits the identifier to the host device.
A synchronous reluctance motor includes magnetic barriers in each magnetic barrier group of a rotor core, each having a shape which protrudes toward a radial inner side and is symmetrical about a q-axis. A portion closer to a circumferential side than the q-axis includes a first portion extending perpendicular to the q-axis and a second portion extending farther toward the circumferential side from a circumferential side of the first portion and radially outward, and the first portions of the magnetic barriers in each magnetic barrier group have the same radial dimension. The first portions of the magnetic barriers other than the radial outermost magnetic barrier have the same circumferential dimension, which is the same as or twice a circumferential dimension of the first portion of the radial outermost magnetic barrier.
A rotary electric machine includes: a rotor having a shaft extending in an axial direction and rotor magnets arranged along a circumferential direction; a stator having a coil and surrounding the rotor; a housing supporting the stator; a pair of magnetic bearings on opposite sides in the axial direction of the rotor magnet; and a position adjusting member held by the housing. The stator holds the rotor rotatably in the axial direction by a field current flowing through the coil. The magnetic bearing includes a cylindrical inner magnet fixed to the rotor and a cylindrical outer magnet fixed to the housing and surrounding the inner magnet, and holds the rotor rotatably in the radial direction. The rotor has a stepped surface facing the axial direction. The position adjusting member has an opposing surface facing the stepped surface, and is movable in the axial direction with respect to the housing.
A sensor holder for an electrical motor controller. The sensor holder is configured for holding a sensor relative to a printed circuit board of an electrical motor controller. The sensor holder includes a body having a first side and a second side; and a retainer coupled to the first side and extending away from the first side and comprising a base coupled to the first side. Furthermore, the sensor holder includes an arm coupled to the base and extending away from the base wherein the base and arm are configured to receive the sensor. A spacer is coupled to the first side and configured to form a space between the sensor and the first side. Moreover, a support is coupled to the body and extending away from the body and coupled to the printed circuit board to position the retainer and the received sensor away from the printed circuit board.
G01D 11/30 - Supports specially adapted for an instrumentSupports specially adapted for a set of instruments
H02K 11/20 - Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
H02K 11/30 - Structural association with control circuits or drive circuits
Nidec Motion Control Technology (Guangdong) Co., LTD (China)
NIDEC CORPORATION (Japan)
Inventor
Yen, Sheng-Chan
Luo, Ta-Yin
Wang, Tian-Bao
Zhou, Zhi-Min
Gu, Zeng-Xiang
Wu, Ruo-Hui
Wei, Sheng-Wang
Abstract
Embodiments of the present application provide a rotor and a motor. The rotor has a plurality of through-hole groups. Each through-hole group has a plurality of through-holes distributed in a radial direction. The rotor also has auxiliary holes. Each auxiliary hole is located between every two radially adjacent through-holes. A sectional area of each auxiliary hole is less than a sectional area of each through-hole. When a first angle, a second angle and a third angle are defined between three portions of each auxiliary hole and the q-axis respectively, the third angle is greater than or equal to the first angle, and the third angle is less than or equal to the second angle.
This base plate constitutes a part of a housing of a disk drive device, and is formed from a metal plate and a die-cast part. The metal plate includes a board-shaped bottom plate portion that spreads out perpendicular to an up-down extending axis of rotation of a disk. The die-cast part covers at least a part of the bottom plate portion. Metal which constitutes the bottom plate portion is higher in rigidity than metal which constitutes the die-cast part.
A motor control device includes a conversion circuit that is connected to an n-phase motor, and a control unit that controls the conversion circuit based on n-phase duty command values updated at a predetermined update cycle. When the control unit predicts, based on the n-phase duty command values, that voltage fluctuations of at least two-phase connection terminals among the n-phase connection terminals connected to the n-phase motor occur in the same direction and at the same timing, the control unit delays the occurrence timing of the voltage fluctuation of one of the two-phase connection terminals by a first time and advances the occurrence timing of the voltage fluctuation of another connection terminal by a second time. The total value of the first time and the second time is a predetermined time during which predetermined occurrence timings of the voltage fluctuations of the two-phase connection terminals do not overlap each other.
H02P 27/14 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters with pulse width modulation with three or more levels of voltage
26.
AUTONOMOUS TRAVELING DEVICE AND AUTONOMOUS TRAVELING DEVICE CONTROL METHOD
One aspect of an autonomous traveling device includes: an information adding unit that adds, as positional information of a virtual obstacle, to map information, positional information of a virtual obstacle that passes through a rear side of the device with respect to a starting point of a travel route and continuously extends to a front side on both right and left sides of the device itself; and a route search unit that searches for a travel route based on the map information to which the positional information of the virtual obstacle is added.
A base plate becomes a part of a housing of a disk drive device and is made of a metal die-cast member. The base plate includes a bottom wall portion and a cylindrical wall portion. The bottom wall portion extends perpendicular to a rotation axis of a disk extending in a vertical direction. The cylindrical wall portion protrudes upward from an upper surface of the bottom wall portion along the rotation axis and has a shaft through hole through which a shaft is inserted. The cylindrical wall portion has an annular stepped portion that protrudes radially outward from an outer peripheral surface of a root portion. A processed surface is formed on at least a part of an outer peripheral surface of the stepped portion.
A motor includes a rotor and a stator. The rotor can rotate around a central axis extending in an axial direction. The stator rotationally drives the rotor. The stator includes a stator core, a coil portion, an inner casing, and a heat conductor. The stator core has an annular shape surrounding the central axis. The coil portion is located in the stator core. The inner casing surrounds and accommodates the stator core and the coil portion in the inside and holds the stator core. The heat conductor is in contact with an axial end portion of the coil portion and the inner casing.
H02K 9/22 - Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
A47L 5/28 - Suction cleaners with handles and nozzles fixed on the casings, e.g. wheeled suction cleaners with steering handle
A47L 9/28 - Installation of the electric equipment, e.g. adaptation or attachment to the suction cleanerControlling suction cleaners by electric means
F04D 1/00 - Radial-flow pumps, e.g. centrifugal pumpsHelico-centrifugal pumps
F04D 13/06 - Units comprising pumps and their driving means the pump being electrically driven
F04D 29/58 - CoolingHeatingDiminishing heat transfer
H02K 5/20 - Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
H02K 9/06 - Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
A power conversion device includes a first module that is a heating element, a second module that is a heating element having a larger calorific value than the first module, a housing having an accommodation space for accommodating the first module and the second module, and a refrigerant flow path through which a refrigerant flows. The housing has a lid that covers the accommodation space. The refrigerant flow path includes a first flow path portion that is disposed outside the accommodation space and cools the first module via the lid, and a second flow path portion that is disposed inside the accommodation space and cools the second module.
A motor includes a heat dissipation portion located in one axial direction from a coil portion located on a stator core of a magnetic body. The heat dissipation portion is separate from a bracket, and is held by a stator holder of the bracket. The heat dissipation portion includes an annular portion having an annular shape surrounding the stator holder and being located on a radially outer surface of the stator holder. An extension extends radially outward from the annular portion.
H02K 9/22 - Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
One aspect of a rotor of the present disclosure is a rotor that includes a rotor core extending along the axial direction and a plurality of auxiliary magnets disposed in the rotor core. The rotor core includes a slit group including a plurality of first slits aligned in a radial direction, and a second slit disposed radially inside the slit group when viewed from the axial direction. The first slit extends along the circumferential direction in a shape protruding radially inward when viewed from the axial direction. The second slit includes a magnet housing portion extending along the radial direction, and a pair of outer flux barrier portions. The auxiliary magnet is disposed in the magnet housing portion with the circumferential direction as the magnetization direction.
An optical member 100 includes a light-transmissive member 10 and a hydrophilic layer 20. The light-transmissive member 10 transmits visible light. The hydrophilic layer 20 covers the light-transmissive member 10. The hydrophilic layer 20 contains secondary particles obtained by aggregating a plurality of primary particles of titanium dioxide. The average particle diameter of the primary particles of titanium dioxide is 5-20 nm. The average particle diameter of the secondary particles of titanium dioxide is 15-100 nm. The thickness of a coating layer is preferably 5-20 nm.
A reflection adjustment film 30 is used for an optical member 100 provided with a hydrophilic layer 20 containing a plurality of photocatalytic particles. The reflection adjustment film 30 is disposed under the hydrophilic layer 20. The thickness of the reflection adjustment film 30 is 5 times or more the thickness of the hydrophilic layer 20. The thickness of the reflection adjustment film 30 is preferably 20-2000 nm. The reflection adjustment film 30 is preferably provided with a low refractive index layer and a high refractive index layer. The photocatalytic particles are preferably titanium oxide particles.
A hydrophilic film 70 contains a plurality of titanium particles and a plurality of silica particles. The hydrophilic film 70 has a surface roughness of 2.0-7.5 nm. It is preferable that a first layer 20 and a second layer 60 disposed on the first layer 20 are provided, and that the first layer 20 contains a plurality of titanium particles, and the second layer 60 contains a plurality of silica particles. The average particle diameter of the titanium particles is preferably 15-100 nm, and the average particle diameter of the silica particles is preferably 5-20 nm.
A rotor of one embodiment of the present invention is able to rotate about a central axis, and comprises: a rotor core; and an end plate that has a first plate surface facing the rotor core in the axial direction, and a second plate surface facing the inverse side from the first plate surface. The first plate surface comprises a contact surface that makes contact with the rotor core in the axial direction in a state where at least part of the end plate is elastically deformed in the axial direction. The contact surface comprises a first surface. In a state where the end plate is not elastically deformed, the first surface is, toward the radially outward side, located increasingly close to a first side of the axial direction where the rotor core is arranged with respect to the end plate, In the state where the end plate is not elastically deformed, a radially outward end of the first surface is the portion of the contact surface that is located closest to the first side. The end plate comprises a first recess provided to an outer surface of the end plate. At least part of the first recess overlaps the first surface in the axial direction.
An aspect of an autonomous travel device includes a selected unit configured such that one option is selected from a plurality of options corresponding to each of a plurality of passage widths having mutually different degrees of freedom of movement allowed for travel through a passage, and a route search unit configured to search for, on the basis of map information, a travel route that avoids passages that are narrow relative to the passage width corresponding to the selected option.
The present invention relates to a rotating electric machine comprising: a rotor that can rotate about a central axis; a stator that is positioned on the radially outer side of the rotor; a cylindrical holding member that surrounds the stator from the radially outer side and holds the stator; and a housing that accommodates the rotor, the stator, and the holding member therein. The holding member has a first rib provided on a radially outer surface of the holding member and in contact with the housing. The housing has a second rib provided on a radially outer surface of the housing. At least a part of the first rib overlaps the second rib in the radial direction.
National University Corporation YOKOHAMA National University (Japan)
Inventor
Watahiki, Masanori
Akatsu, Kan
Abstract
A stator core has tooth portions each including a body and an umbrella portion. The umbrella portion includes a first vertex closest to one side in the circumferential direction in a surface facing the side end and the other side in the radial direction, a second vertex farthest from the side end portion toward the one side in the circumferential direction, a third vertex closest to the other side in the circumferential direction in a surface facing the other side in the radial direction, and a fourth vertex farthest from the side end portion toward the other side in the circumferential direction. Lx is between side end portions facing in the circumferential direction on a virtual straight line passing through the second and fourth vertices, Ly1 is between the side end portion and the second vertex, Ly2 is between the side end portion and the fourth vertex, 0
A cooling device includes a first component, a second component, and a shielding portion. The first component cools a heat generating component. The second component is different from the first component. The shielding portion performs shielding between the first component and the second component. The shielding portion includes a conductive material.
An electronic device includes a conductive panel including a first opening, a display to display an image, and an electrically insulating spacer fixed to the panel. The spacer supports the display at a position away from the first opening in an intersecting direction intersecting with the first opening, and electrically isolates the display from the panel.
A cylinder includes a cylindrical portion, an insertion portion, and a first sealing portion. The cylindrical portion has a central axis, extends in an axial direction along the central axis, and allows liquid to flow. The insertion portion extends along the central axis and is inserted into the inside of the cylindrical portion. The first sealing portion seals a space between the cylindrical portion and the insertion portion. The insertion portion includes a recessed portion and a second sealing portion. The recessed portion is annular. The recessed portion is located along an outer peripheral surface of the insertion portion and accommodates the first sealing portion. A second sealing portion seals a space between a step on a bottom surface of the recessed portion and the first sealing portion.
F16L 33/035 - Hose-clips fixed by means of teeth or hooks
F16L 37/086 - Couplings of the quick-acting type in which the connection between abutting or axially-overlapping ends is maintained by locking members combined with automatic locking by means of latching members pushed radially by spring-like elements
F16L 37/35 - Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings at least one of two lift valves being opened automatically when the coupling is applied at least one of the valves having an axial bore communicating with lateral apertures
42.
ROTOR, ROTATING ELECTRICAL MACHINE, AND DRIVE DEVICE
A rotor includes: a rotor core having first and second vent holes penetrating in an axial direction; and a fan disposed to face at least one end surface on an axial side of the rotor core, and having an outflow path connected to the first vent hole and an inflow path connected to the second vent hole. The fan includes a first surface facing the end surface, an outer surface positioned radially outside the first surface, and a first recess portion in the first surface and axially overlapping the first vent hole. The first recess portion includes a first opening portion opening to the outer surface. At least a part of the outflow path is surrounded by the end surface and the first recess portion. A cross-sectional area of the outflow path in the first opening portion is smaller than a minimum cross-sectional area of the inflow path.
H02K 9/06 - Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
H02K 1/276 - Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
43.
SIGNAL CONVERSION METHOD, POSITION DETECTION METHOD, AND POSITION DETECTION DEVICE
This signal conversion method converts each of a plurality of analog signals into a digital signal, and includes: a first step in which a sampling process for sampling the value of an analog signal at least once is sequentially performed a plurality of times; and a second step that is performed following the first step, and in which the sampling process is sequentially performed a plurality of times. The plurality of instances of the sampling process performed in the first step include at least one instance of the sampling process for each of the plurality of analog signals. In the second step, the plurality of instances of the sampling process performed in the first step are performed in the opposite order from that of the first step.
This optical element has an optical axis Lx. The optical element comprises a plastic lens, a hard coat layer, and an anti-reflection film. The hard coat layer is positioned between the plastic lens and the anti-reflection film. The anti-reflection film is disposed on at least one surface side of the plastic lens. The thickness of the hard coat layer on the optical axis is 2-20 μm. The minimum thickness of the hard coat layer is 2 μm or more, and the maximum thickness of the hard coat layer is 20 μm or less.
This lens unit comprises a plurality of lenses and a cylindrical housing member that houses the plurality of lenses. The plurality of lenses are arranged in order from an opening in the housing member, and the outermost lens positioned on the opening side of the housing member among the plurality of lenses includes a plastic lens, an antireflection film arranged on at least one surface side of the plastic lens, and a hard coat layer positioned between the plastic lens and the antireflection film. The lens unit further comprises a light shielding member that shields the outer edge of the outermost lens from light.
G02B 7/02 - Mountings, adjusting means, or light-tight connections, for optical elements for lenses
G02B 1/04 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of organic materials, e.g. plastics
G02B 1/14 - Protective coatings, e.g. hard coatings
G03B 30/00 - Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles
A fluid machine includes a flow path including an outflow port of a fluid, a first portion through which the fluid flows from the other side to one side in a first direction, and a second portion through which the fluid flows. The second portion is located between one end of the first portion in the first direction and the outflow port. The fluid machine further includes a check valve portion that is movable along the first direction in the first portion, and is located at a first position at which the one end is closed, a second position that is located on one side in the first direction and through which the fluid can circulate between the first and second portions, and a third position at which the one end is closed and that is located on another side in the first direction with respect to the first position.
A drive device includes a transmission in a housing, and a flow path. The transmission includes a shaft and a bearing supporting the shaft. The housing has a bearing holding portion that includes a facing surface on a first side in an axial direction with respect to an end on the first side of the shaft and orthogonal to the axial direction, and an inner surface extending from the facing surface to the other, second side in the axial direction and supporting the bearing. The flow path includes an inflow portion and an outflow portion below the inflow portion, both open to the inner surface. The facing surface has a rib protruding to the second side and orthogonal to the axial direction. At least a part of the rib is below the inflow portion, and at least a part of the rib covers the outflow portion from above.
A rotary electric machine includes a housing having a tubular shape extending in a first direction and including an opening that opens to one side in the first direction, a first board on one side in a second direction intersecting the first direction with respect to the housing, and a lid fixed to an end portion on one side in the first direction of the housing. The housing includes a through hole penetrating the housing in the second direction. The lid includes a connector including a first terminal and a holder to hold the first terminal, and a cover that covers the opening and holder and is defined by a same structure as that of the holder.
H02K 5/22 - Auxiliary parts of casings not covered by groups , e.g. shaped to form connection boxes or terminal boxes
H02K 5/10 - Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. of water or fingers
H02K 15/00 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
A drive device includes a motor, a transmission, a housing, and a flow path. The transmission includes first to third shafts, and first to third bearings supporting the first to third shafts, respectively. The housing includes a side wall covering a gear chamber from one side in an axial direction, and having first to third bearing holding portions for holding the first to third bearings, respectively. The flow path includes a supply flow path portion that supplies a fluid to the inside of the second bearing holding portion, a first flow path portion that connects the inside of the second bearing holding portion and the inside of the first bearing holding portion, and a second flow path portion that connects the inside of the second bearing holding portion and the inside of the third bearing holding portion.
This rotary electrical machine comprises: a rotor that can rotate about the central axis; a stator positioned at the radially outer side of the rotor; a cylindrical member that is positioned at the radially outer side of the stator and that accommodates therein the stator; and a housing that has an accommodation part for accommodating therein the rotor, the stator, and the cylindrical member. The cylindrical member has a stator fixing part to which the stator is fixed, a first support part that is positioned closer to one side in the axial direction as compared to the stator fixing part and that is supported on the accommodation part, and a first connection part that is positioned between the stator fixing part and the first support part in the axial direction and that connects the stator fixing part and the first support part. At least a portion of the stator fixing part and at least a portion of the first connection part are arranged so as to be separated radially inward from the inner surface of the accommodation part.
A dynamo-electric machine comprising: a rotor that is capable of rotating about a central axis; a stator that is positioned on the radially outer side of the rotor; a cylindrical member that is positioned on the radially outer side of the stator, the cylindrical member accommodating the stator in the interior thereof; and a housing that has an accommodation part for accommodating the rotor, the stator, and the cylindrical member in the interior thereof. The stator has a stator core fixed to the cylindrical member, and a coil end that protrudes from the stator core in the axial direction. A gap is provided between the radially outer surface of the cylindrical member and the radially inner surface of the accommodation part. The accommodation part has: a first flow passage part that overlaps the stator core in a direction intersecting the axial direction, the first flow passage part being connected to the gap; and a second flow passage part that overlaps the coil end in a direction intersecting the axial direction, the second flow passage having a fluid for cooling the coil end flowing therein.
This rotor comprises a shaft, a rotor core having a plurality of core piece parts aligned in the axial direction, and a plate disposed between the core piece parts adjacent to each other in the axial direction. The shaft has a first shaft hole part and a second shaft hole part connected to the first shaft hole part. The rotor core has a pair of first magnet holes, a second magnet hole positioned radially outside the pair of first magnet holes, and a core channel part positioned in a portion surrounded by the pair of first magnet holes and the second magnet hole when viewed in the axial direction. The plate has a plate channel part that connects the second shaft hole part and the core channel part. The plate channel part has a supply channel part that overlaps the core channel part when viewed in the axial direction, and a connection channel part that connects the second shaft hole part and the supply channel part. The connection channel part overlaps at least a portion of the pair of first magnet holes when viewed in the axial direction.
A lens unit according to the present invention is provided with: a plurality of lenses; and a cylindrical housing member for housing the plurality of lenses. The plurality of lenses are arranged in order from an opening of the housing member. An outermost lens positioned on the opening side of the housing member among the plurality of lenses includes: a plastic lens having a surface provided with an inflection section; an antireflection film disposed on the surface side of the plastic lens; and a hard coat layer positioned between the plastic lens and the antireflection film. The lens unit is further provided with a light shielding member that shields the inflection section of the plastic lens from light.
G02B 7/02 - Mountings, adjusting means, or light-tight connections, for optical elements for lenses
G02B 1/04 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of organic materials, e.g. plastics
G02B 1/14 - Protective coatings, e.g. hard coatings
G03B 30/00 - Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles
54.
STATOR, MOTOR, AND METHOD FOR MANUFACTURING STATOR
This stator comprises an annular stator core surrounding the central axis extending in the axial direction, a plurality of coil parts, a circuit board, and an electrically insulating coating member. The stator core has slots. The plurality of slots penetrate in the axial direction and are arranged in the circumferential direction. The plurality of coil parts are disposed in the slots, respectively. The circuit board is disposed further in one axial direction than the stator core and is electrically connected to lead-out wires led out from the coil parts. The coating member coats at least the coil parts. The circuit board has a first through-hole extending in the axial direction. At least a part of the first through-hole overlaps with the stator core when viewed from the axial direction.
This rotor manufacturing method comprises: a core plate formation step for punching a steel plate to form a plurality of core plates having a plurality of insertion holes that penetrates the steel plate in the thickness direction, each insertion hole serving to configure a part of a corresponding magnet insertion hole of a plurality of magnet insertion holes, and a plurality of protrusions protruding toward the inside of the plurality of insertion holes; a protrusion removal step for removing at least one of the plurality of protrusions in at least some of the plurality of core plates formed in the core plate formation step; a lamination step for laminating the plurality of core plates to configure the magnet insertion holes of the insertion holes in which the protrusions protrude toward the inside and the insertion holes from which the protrusions have been removed; and a magnet insertion step for inserting the magnet into each of the plurality of magnet insertion holes and holding the magnets in contact with the protrusions.
H02K 15/02 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
H02K 1/276 - Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
A first core plate of this rotor comprises: a first insertion hole; a protrusion that protrudes toward the inside of the first insertion hole and is in contact with a magnet; and a deformation-allowing part that is positioned in a direction opposite to a direction in which the first insertion hole is positioned with respect to the protrusion in an arrangement direction of the first insertion hole and the protrusion, and allows deformation of the protrusion in said opposite direction. A second core plate has a second insertion hole for exposing at least a part of the protrusion when viewed from the axial direction in a state where the second core plate is stacked on the first core plate. A plurality of the second core plates include a central core plate that is stacked at the center in the axial direction of the rotor core, and a first surface layer core plate and a second surface layer core plate that constitute end surfaces in the axial direction of the rotor core. At least one first core plate is stacked between the central core plate and the first surface layer core plate, and at least one first core plate is stacked between the central core plate and the second surface layer core plate.
At least one of a plurality of fins includes a plurality of fin regions in a first direction, the plurality of fin regions facing a plurality of semiconductor elements in a third direction, the plurality of the semiconductor elements being disposed in the first direction, and the plurality of fin regions includes two or more fin regions each of which includes the side wall part provided with a spoiler. The spoiler is equal in number between the two or more fin regions, and flow path resistance due to structure of the spoiler in each of the fin regions increases from an upstream side toward a downstream side of the corresponding one of the fin regions through which a refrigerant flows.
H01L 23/473 - Arrangements for cooling, heating, ventilating or temperature compensation involving the transfer of heat by flowing fluids by flowing liquids
A heat radiating member includes: a base part in a plate shape that extends in a first direction along a refrigerant flow direction and in a second direction orthogonal to the first direction; a heat radiating fin part formed by stacking a plurality of fins in the second direction, the plurality of fins protruding from the base part toward a first side; and a plurality of flow path channels formed in the second direction in the heat radiating fin part, a first flow path channel through which the refrigerant passes through a region facing a semiconductor element, the semiconductor element being disposed on a second side in the base part; and a second flow path channel through which the refrigerant does not pass, and the first flow path channel having a lower average flow path resistance than the second flow path channel.
H01L 23/473 - Arrangements for cooling, heating, ventilating or temperature compensation involving the transfer of heat by flowing fluids by flowing liquids
H01L 25/18 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices the devices being of types provided for in two or more different main groups of the same subclass of , , , , or
A heat radiating fin part includes at least one protrusion protruding toward a first side in a first direction and being provided at an end of the heat radiating fin part on the first side in the first direction, the end allowing a refrigerant supplied through a liquid cooling jacket to flow into the end. The at least one protrusion is provided on at least one of a first side in the second direction with respect to a center position of the heat radiating fin part in the second direction. At least a part of a semiconductor element provided on a base part on a second side is disposed closer to a center position in the second direction than the protrusion provided closest to the center position in the second direction on the first side in the second direction.
A synchronous reluctance motor includes a rotor having a rotor iron core and a stator having pole teeth. The rotor iron core defines multiple magnetic poles. A magnetic barrier area is defined between adjacent magnetic poles in a circumferential direction, and a conductor area is located at a radially outer side of the magnetic barrier area. The magnetic barrier area is provided with a hole arranged in multiple layers in a radial direction and defining a magnetic barrier. The conductor area is provided with multiple conductors arranged at substantially equal intervals in the circumferential direction and having substantially identical cross-sectional shapes as each other. The following relationship is satisfied: Nc={2×[Nt/(2×Np)−1]−1}×Np where Nt is a number of the pole teeth, Np is a number of the magnetic poles, and Nc is a number of the conductors.
A housing of a rotating electrical machine has a flow path extending in a rectangular wave shape along a circumferential direction, and including axial paths, and first and second circumferential paths joining first ends and second ends of the axial paths, respectively. The axial path includes joined first and second paths. A cross-section in each of the first and second paths decreases toward the other. A difference between the cross-sections at the first end and at the first circumferential path is not higher than a difference between the cross-sections at the first end and at a third end of the first path close to the second path. A difference between the cross-sections at the second end and at the second circumferential path is not higher than a difference between the cross-sections at the second end and at a fourth end of the second path close to the first path.
A sintered oil-impregnated bearing comprising a bushing portion and groove groups. The bushing portion is made of a porous sintered body that can be impregnated with lubricating oil, and the bushing portion extends along a central axis. The groove groups have a plurality of first grooves. The plurality of first grooves extend at least in the axial direction of the central axis and are aligned in the circumferential direction. A plurality of groove groups are arranged on the radially outer surface of the bushing portion and are aligned in the circumferential direction. Circumferential gaps between first grooves that are adjacent in the circumferential direction within each of the groove groups are smaller than circumferential gaps between groove groups that are adjacent in the circumferential direction. Additionally, a motor comprising the above-described sintered oil-impregnated bearing, a shaft, a rotor, and a bearing holder. The shaft extends along the central axis, and the rotor is capable of rotating together with the shaft about the central axis. The bearing holder rotatably supports the shaft via the sintered oil-impregnated bearing. The bearing holder has a holder cylinder and a plurality of ribs. The holder cylinder extends in the axial direction and encircles and holds the sintered oil-impregnated bearing. The plurality of ribs protrude radially inward from the radially inner surface of the holder cylinder and are aligned in the circumferential direction.
F16C 17/02 - Sliding-contact bearings for exclusively rotary movement for radial load only
H02K 5/167 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings
A fin includes spoilers along a first direction. Each spoiler protrudes in a second direction only at one position on a periphery of an opening passing through a side plate part in the second direction, and is inclined to a first side in the first direction that is a downstream side and a second side in the third direction. An upstream spoiler includes a first end on the second side in the first direction. The first end includes, on the second side in the third direction, a second end on the first side from a center of the side plate part in the third direction. A part of at least one downstream spoiler is on the second side in the third direction from a fourth end on the second side in the third direction of a third end on the second side in the first direction of the upstream spoiler.
H01L 23/473 - Arrangements for cooling, heating, ventilating or temperature compensation involving the transfer of heat by flowing fluids by flowing liquids
A container includes a first container portion and a second container portion. The first container portion includes a flow path therein through which liquid passes. The second container portion is connected to the flow path and is capable of containing the liquid. The second container portion includes a reservoir and a changing assembly. The reservoir can store the liquid in at least a portion thereof. The changing assembly changes the volume of the reservoir according to a change in the liquid.
A variable frequency drive motor system and method with a single variable frequency drive controller controlling multiple synchronous reluctance motors in an open-loop mode using volts-per-Hertz control. Each motor includes a rotor including three or more curved, spaced-apart barrier slots extending longitudinally through each quadrant of the rotor. The rotor also includes a conductive cage including a plurality of conductive rotor bars contained within the barrier slots and also extending longitudinally through each quadrant, and conductive end rings located at opposite ends of the rotor and electrically connected to the respective ends of the rotor bars. The controller controls speed and torque by varying input frequency and voltage in an open-loop mode by adjusting the voltage magnitude of an inverter's output to each motor to match a required load torque in a volts-per-Hertz relationship. An operator interface allows for starting, stopping, adjusting, and otherwise controlling the operation of each motor.
H02P 25/092 - Converters specially adapted for controlling reluctance motors
H02P 27/04 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
A refrigerant circulation device includes a chassis, a pump assembly, mounting portions, and a controller. The chassis includes a flow path of refrigerant. The mounting portions are provided at different positions in the chassis. The pump assembly is detachably mounted to each of the mounting portions. The controller is configured or programmed to execute specification processing to specify a mounted state of the pump assembly to any one of the mounting portions multiple times at time intervals, and control the pump assembly mounted to the mounting portions based on the mounted state specified in the specification processing. The pump assembly pressure-feeds the refrigerant to the flow path under the control of the controller.
A vibration motor includes a movable portion and a stationary portion including a housing with a housing cylindrical portion, a housing lid at an end of the housing cylindrical portion, and adhesive. The housing lid includes a lid body portion covering an opening on one side of the housing cylindrical portion, and a lid fixing portion protruding from the lid body portion to another side and inside the housing cylindrical portion. The adhesive is in at least a portion of a bonding region between the housing cylindrical portion and the lid fixing portion in a radial direction. The housing cylindrical portion includes a cutout portion recessed from an end surface on one side of the housing cylindrical portion to the other side and penetrating the housing cylindrical portion in the radial direction. A portion of the bonding region is exposed to an outside of the housing through the cutout portion.
H02K 33/02 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
H02K 3/28 - Layout of windings or of connections between windings
H02K 5/15 - Mounting arrangements for bearing-shields or end plates
A motor and an electrical apparatus are provided. The motor includes a housing and a cover. The cover includes a recess recessed on a surface from an axial side to an axial other side. The recess is located on a portion of an edge on a radially outer side of the cover. An edge on a radially outer side of the recess is in interference fit with an inner circumference of the housing. The surface of the cover on the axial side is used for being coated with an adhesive. By defining the recess on a portion of the edge of the cover and allowing the edge on the radially outer side of the recess to be in interference fit with the inner circumference of the housing, the processing process of the motor is simplified, and the adhesive is prevented from overflowing.
A motor includes a busbar holder and a power terminal electrically connected to the busbar holder. The busbar holder has a hole accommodating an end of the power terminal. At least one portion of an inner wall of the hole is defined with an internal thread. At least one portion of the end of the power terminal is defined with an external thread. The power terminal and the busbar holder are connected by threaded fitting of the external thread and the internal thread. In this way, the power terminal and the busbar holder are connected through threaded fitting, so that the stability of the electrical connection between the power terminal and the busbar holder is improved, and the failure rate of the motor is thus decreased.
An angle detection device includes: three magnetic sensors detecting a change in magnetic flux due to rotation of a rotation shaft; and a signal processor that acquires sensor signals, generates a linear function θ(Δx) representing a straight line connecting adjacent intersection and zero-cross points, searches for a point where an error between a mechanical angle θ calculated based on the linear function θ(Δx) and a mechanical angle θe acquired from an encoder becomes a maximum value as a maximum error point, calculates a curve based on an origin, a vertex, and a control point, corrects the mechanical angle θ based on the curve, acquires a maximum error between the corrected mechanical angle θ and the mechanical angle θe, and after the value of Δx of the control point is changed in a direction in which the maximum error decreases, returns to the fifth process a predetermined number of times.
G01B 7/30 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapersMeasuring arrangements characterised by the use of electric or magnetic techniques for testing the alignment of axes
G01D 5/14 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
A drive device according to one embodiment of the present invention is provided with: a motor; a shaft that is connected to a rotor of the motor and extends in an axial direction with a central axial line at the center; a bearing that supports one axial-direction-side end of the shaft; a partition member; a housing; and a channel disposed in the housing. The shaft is cylindrical in shape, including a hollow section that opens on the one axial-direction side. The housing includes an accommodation section that is convex in shape opening on the other axial-direction side, and that internally accommodates the bearing. An inner side surface of the accommodation section includes a first opening section and a second opening section. The channel includes: a first channel section that opens in the inner side surface of the accommodation section at the first opening section; and a second channel section that opens in the inner side surface of the accommodation section at the second opening section. The partition member partitions the interior of the accommodation section into a first space and a second space. The first space is located between the first opening section and the hollow section. The second space is located between the second opening section and the bearing.
Provided is a flow path adjustment mechanism for a fluid delivery device, the flow path adjustment mechanism being able to adjust a circulation area of a fluid that flows by driving of a drive body. The flow path adjustment mechanism is provided with a blocking unit. The blocking unit can adjust blocking and opening of at least a portion of a circulation face of a flow path seen from a circulation direction of the fluid, on the basis of a result of detection of at least one of a drive state of the drive body and a state of the fluid in the flow path through which the fluid circulates. The fluid delivery device is provided with the flow path adjustment mechanism and a circulation device. The circulation device causes the fluid to flow by driving of the drive body.
Disclosed are a motor and an electrical product. The motor includes a stator and a housing for accommodating the stator. The housing includes a housing wall and a housing bottom, the stator includes a stator core and a resin component at least covering one side of the stator core facing the housing bottom, and one side of the resin component facing the housing bottom has a concave component. One side of the housing bottom facing the resin component has a positioning component, and the positioning component is axially opposite to the concave component. In this way, the concave component is defined in a part of the resin component of the stator core that is axially opposite to the positioning hole, and the positioning pin is inserted into the positioning hole and the concave component to position the housing and the stator core.
The disclosure provides a motor and a motor assembling method. The motor includes a housing having a bottom and a wall portion extending from an edge of the bottom along an axial direction, and a lid connected to the housing on one side in the axial direction of the bottom of the housing. A surface on the one side in the axial direction of the bottom of the housing has a first connection surface. Housing portions on an inside and an outside in a radial direction of the first connection surface are respectively bent in opposite directions intersecting the first connection surface, which ensures sufficient working space when performing work for connecting the housing and the lid.
This disclosure provides a motor. The motor includes a housing and a lid molded by pressing. The lid includes a first wall portion extending along an axial direction. One side in the axial direction of the first wall portion is tightly fitted or loose-fitted to the housing, and the other side in the axial direction of the first wall portion is connected to an external device. This structure facilitates coaxial alignment and connection between the housing and the lid and reduces costs.
An electric motor includes a stator and a rotor rotatable relative to the stator. The rotor includes an axial shaft, a disc projecting radially from the shaft, and a ring magnet affixed to the disc. The shaft and the disc are integrally formed as a unitary body.
A position detection device includes: a first group including N (a multiple of 3) first magnetic sensors facing a magnet that rotates in synchronization with a rotation shaft of a motor and arranged at intervals along a rotation direction of the magnet, and a second group including N second magnetic sensors arranged opposite respectively to the N first magnetic sensors across the rotation shaft in a radial direction of the magnet; and a signal processing device processing output signals respectively output from the first and second magnetic sensors. The signal processing device executes averaging processing of generating N average signals by averaging an output signal of the first magnetic sensor and an output signal of the second magnetic sensor arranged at the position opposite to the first magnetic sensor across the rotation shaft, and estimation processing of estimating a rotational position of the motor based on the N average signals.
H02K 11/215 - Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
D05B 19/04 - Sewing machines having electronic memory or microprocessor control unit characterised by memory aspects
H02K 29/08 - Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices using magnetic effect devices, e.g. Hall-plates or magneto-resistors
H02P 6/16 - Circuit arrangements for detecting position
For example, a drive motor module capable of suppressing resonance of an inverter cover due to vibration from a motor or the like is provided. A drive motor module 1 includes a motor, an inverter electrically connected to the motor, a housing that houses the motor and the inverter, and an inverter cover that has a plate shape and covers the inverter. An outer surface of an inverter cover is divided into a first region and a second region in plan view. In the first region, a plurality of first ribs arranged in parallel to each other and a connecting portion extending in a direction intersecting with the first rib and connected to one end side of each of the first ribs are provided in a protruding manner. In the second region, a plurality of second ribs that radially extend are provided in a protruding manner.
In a blower, an attachment portion is attached across radially outer surfaces of a first axial fan and a second axial fan connected in series. A portion of a third connecting portion of the attachment portion is connected to a first connecting portion of the first axial fan. Another portion of the third connecting portion is connected to a second connecting portion of the second axial fan. An extension portion of the attachment portion extends in an axial direction from the third connecting portion, and is located at a radially outer end of at least one of a first tubular portion and a second tubular portion. The extension portion surrounds at least one of a first lead wire and a second lead wire together with a radially outer end of at least one of the first tubular portion and the second tubular portion.
A drive device according to one embodiment of the present invention comprises: a motor having a motor shaft that rotates about a motor axis; a transmission mechanism positioned at one side of the motor in the axial direction and having a plurality of gears that transmit the power of the motor; a plurality of bearings supporting the transmission mechanism; a housing provided with a motor chamber that accommodates the motor and a gear chamber that accommodates the transmission mechanism; a flow channel through which a fluid flows, at least a portion of the flow channel being provided in the housing; and a pump that suctions in and pumps the fluid from an inlet port that is disposed in the flow channel and opens into the gear chamber. The gear chamber is provided with a partition wall that partitions the gear chamber into a first area and a second area. Of the plurality of gears, a ring gear with the largest diameter is disposed in the first area. The inlet port is disposed in the second area. The housing has a cylindrical part that holds the bearings. The flow channel has a first flow channel section that supplies the fluid to an inner circumferential surface of the cylindrical part, and a second flow channel section that extends from the inner circumferential surface of the cylindrical part to an opening end positioned in the first area.
A drive device according to one embodiment comprises: a motor having a motor shaft that rotates about a motor axis; a transmission mechanism that is located on one axial side of the motor and that has a plurality of gears for transmitting the motive power of the motor; a housing provided with a motor compartment in which the motor is accommodated and a gear compartment in which the transmission mechanism is accommodated; and a fluid retained in the housing. The housing has a barrier partitioning the motor compartment and the gear compartment, and a dividing wall part extending in the vertical direction. The dividing wall part partitions the gear compartment into a first storage part and a second storage part when viewed from the axial direction. The gears of the transmission mechanism are disposed in the first storage part. The second storage part opens upwards. A channel linking the first storage part and the second storage part are provided to the housing. A barrier opening linking the motor compartment and the first storage part is disposed in the barrier.
An aspect of the present invention is a control device that controls a motor and that is provided with a control unit that controls the motor. The control unit performs regenerative current control for respectively controlling a d-axis current command value and a q-axis current command value on the basis of a regenerative torque command value. When performing the regenerative current control, the control unit determines the ratio of the d-axis current command value to the q-axis current command value on the basis of the charging rate of a battery capable of supplying power to the motor and temperature information related to the motor.
An angle detecting device according to one aspect of the present invention comprises: a first magnet that rotates in synchronization with a rotor and has at least two pole pairs; a second magnet that rotates in synchronization with the rotor and has one pole pair; three first magnetic sensors that face the first magnet and that are disposed at a prescribed interval in the circumferential direction of the first magnet; one second magnetic sensor that faces the second magnet; and a signal processing device that calculates an absolute angle of the rotor on the basis of an output signal of the second magnetic sensor and a synthetic signal which is the sum of output signals of the three first magnetic sensors. The output signals of the three first magnetic sensors mutually have a phase difference of 120 degrees in electrical angle. The phase difference between the synthetic signal and the output signal of the second magnetic sensor is 90 degrees in mechanical angle.
G01D 5/16 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying resistance
86.
TARGET SPEED SELECTION DEVICE, MOTOR CONTROL DEVICE, TARGET SPEED SELECTION METHOD, AND TARGET SPEED SELECTION PROGRAM
[Problem] To select a target speed that makes motor loss energy smaller than in the related art. [Solution] A target speed selection device comprising: a detector that detects a speed of a motor or a speed of a moving object moved by the motor; a calculation unit that calculates motor loss energy on the basis of the detected speed; and a selection unit that selects a target speed that makes the motor loss energy smaller than that at a speed that minimizes pseudo motor loss energy, which is determined by assuming that a load torque is constant even when the speed changes.
H02P 29/00 - Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
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 performanceAdaptation 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
One embodiment of a drive device according to the present invention is equipped with: a motor which has a rotor capable of rotating around a first axis; a transmission mechanism which transmits the rotations of the rotor and is positioned on one side of the motor in the axial direction; a first control unit positioned on the other side of the motor in the axial direction; a second control unit positioned to the outside of the motor in the radial direction; a bus bar which connects the first and second control units to one another; and a connection channel section. The first control unit has a plurality of electronic components which constitute an inverter, a first housing which houses the plurality of electronic components, and a first channel section provided to the first housing. The second control unit has a power conversion unit, a current distribution unit, a second housing for housing the power conversion unit and the current distribution unit, and a second channel section provided to the second housing. The connection channel section connects the first channel section and the second channel section to one another. One or more elements among the bus bar and the connection channel section extend toward the first housing in the radial direction from a surface of the second housing which faces inward in the radial direction.
One aspect of a drive device according to the present invention comprises: a motor that has a rotor which can rotate about a first axis and a stator which surrounds the rotor from the radially outer side; a housing that surrounds the motor; a first control unit that controls the motor; and a case that accommodates the first control unit. The stator has an annular stator core that is centered on the first axis and a coil that is installed on the stator core. The case is fastened to the housing from a first direction which is orthogonal to the axial direction, at a plurality of fastening parts. The plurality of fastening parts are disposed at positions which are offset from the stator core in the axial direction.
A connector includes a flow path extending in an axial direction along a central axis, a body including a through hole extending in the axial direction, a pipe including a through hole extending in the axial direction, and a seal including a sealing material between the body and the pipe. The body includes a body-side opposing surface opposing the pipe. The pipe includes a pipe-side opposing surface opposing the body. The seal is between the body-side opposing surface and the pipe-side opposing surface. The seal includes a reservoir in which the sealing material collects between the body-side opposing surface and the pipe-side opposing surface.
F16L 41/08 - Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of a wall or to the axis of another pipe
F16L 3/015 - Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets for supporting or guiding the pipes, cables or protective tubing, between relatively movable points, e.g. movable channels using articulated- or supple-guiding elements
F16L 37/46 - Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in only one of two pipe-end fittings with a gate valve or sliding valve
90.
ADAPTIVE SPEED CONTROL SYSTEM AND METHOD FOR ADAPTING MOTOR CONTROL TO CHANGING LOAD CONDITIONS
An adaptive speed control system and method for adapting control of an electric motor under a changing load condition. A load torque observer determines a load torque value when the motor is operating at a constant speed, and the load torque value is used to adapt a torque. An inertia observer determines an inertia load value when the motor is operating at a changing speed, and the inertia load value is used to adapt a controller gain. An active disturbance input decoupler provides disturbance rejection when the motor is operating at a constant speed. An adaptive control switch switches the load torque observer between driving the inertia observer and driving the active disturbance input decoupler. The system may be configured for a multi-axis system in which multiple motors are each associated with a different axis of motion, and multiple adaptive speed control systems are each associated with a different motor.
B60L 15/24 - Methods, circuits or devices for controlling the propulsion of electrically-propelled vehicles, e.g. their traction-motor speed, to achieve a desired performanceAdaptation 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 with main controller driven by a servomotor
91.
SIGNAL GENERATION DEVICE AND SIGNAL GENERATION METHOD
A signal generation device according to one aspect of the present invention comprises: a rotatably arranged magnet that has one or more pole pairs; M (M is a multiple of 3) magnetic sensors that output first M-phase signals according to the rotation angle of the magnet; and a signal processing unit that processes the first M-phase signals, wherein the signal processing unit executes first processing of calculating an M-phase complex vector on the basis of the first M-phase signals, and second processing of calculating second M-phase signals by multiplying the real part or imaginary part of the first M-phase complex vector by N (N is an integer of 2 or more).
G01D 5/244 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trainsMechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means generating pulses or pulse trains
G01D 5/245 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trainsMechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means generating pulses or pulse trains using a variable number of pulses in a train
An angle detection device according to one aspect of the present invention comprises: a first magnet that rotates in synchronization with a rotating body and has one pole pair; M (M is a multiple of 3) first magnetic sensors that output first M-phase signals in which a waveform of one period in electrical angle appears every time the first magnet rotates once; a signal acquisition unit that acquires second M-phase signals for which the frequency is N (N is an integer of 2 or more) times that of the first M-phase signals; and an angle calculation unit that calculates the absolute angle of the rotating body on the basis of the first M-phase signals and the second M-phase signals.
G01D 5/244 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trainsMechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means generating pulses or pulse trains
G01D 5/245 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trainsMechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means generating pulses or pulse trains using a variable number of pulses in a train
This drive device comprises: a motor body; a gear mechanism; a housing having a motor housing that accommodates thereinside the motor body, a gear housing that is located at one side in the axial direction of the motor housing and that accommodates thereinside the gear mechanism, and a storage part that stores thereinside a fluid; a pump for delivering the fluid inside the storage part to the inside of the motor housing; a flow channel that connects at least the pump and the inside of the motor housing and through which the fluid flows; and a cooler that is disposed in a portion, in the flow channel, where the fluid is delivered from the pump to the inside of the motor housing. A motor that has the motor body and the motor housing is formed. A portion of the motor overlaps in the axial direction with the gear housing. The motor has a projection part projecting radially outward from the gear housing as viewed in the axial direction. At least a portion of the cooler overlaps with the gear housing in a prescribed direction orthogonal to the axial direction, and overlaps with the projection part in the axial direction.
This drive device comprises: a motor having a rotor that is capable of rotating about a central axis, and a stator that faces the rotor across a gap; a gear mechanism that is connected to the rotor; a housing having a motor housing that accommodates the motor therein, a gear housing that accommodates the gear mechanism therein, and a storage part that has a fluid stored therein; and a pump that is attached to the housing and sends the fluid in the storage part into the interior of the motor housing. The housing has an attachment part having an attachment hole. The attachment hole has an opening that opens upward in the outer surface of the housing. At least part of the pump is inserted into the attachment hole through the opening.
A drive device according to one aspect of the present invention comprises: a motor that has a rotor that is able to rotate about a center axis and a stator located on the radial outward side of the rotor; a gear mechanism connected to the rotor; a housing that includes a motor housing that contains therein the motor and a gear housing that contains therein the gear mechanism; and a fluid supply unit that supplies a fluid to the motor. The stator includes a stator core that is fixed inside the motor housing. A first protruding section that protrudes radially inward is provided to the inner surface of the motor housing. The surface on the radial inside of the first protruding section is an opposing surface that opposes the surface on the radial outside of the stator core in the radial direction. The opposing surface extends along the radial outside surface of the stator core as seen in the axial direction. The housing includes a first flow path through which the fluid flows. The first flow path includes a first opening section that is open in a first surface side that is one side in the circumferential direction of the first protruding part, and a second opening section that is open to the inside of the gear housing.
A motor unit according to one embodiment of the present invention is equipped with a motor, an inverter, a bus bar, a motor housing and an inverter housing. The inverter is electrically connected to the motor. The bus bar connects the motor and the inverter to one another. The motor housing has a motor chamber. The inverter housing has an inverter chamber. One or more sections of the inverter chamber overlap the motor chamber in the radial direction and the axial direction. A wall section for demarcating the motor chamber and the inverter chamber is provided to the section of the motor and inverter housings where the motor chamber and the inverter chamber overlap one another in the axial direction. The motor chamber and the inverter chamber are connected via a connecting hole through which the bus bar passes. The motor housing has a first storage section for storing the bus bar, an opening section which connects the first storage section and the motor housing exterior to one another, and a pressure adjustment mechanism which is attached to the opening.
H02K 5/22 - Auxiliary parts of casings not covered by groups , e.g. shaped to form connection boxes or terminal boxes
H02K 5/10 - Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. of water or fingers
A drive device according to one embodiment of the present invention has a motor, a motor housing, an inverter, an inverter housing, and a gear. The inverter housing radially overlaps with the motor housing. The inverter housing is provided with a first flow channel through which a refrigerant flows. The motor housing is provided with a second flow channel through which the refrigerant flows. A third flow channel that connects the first flow channel and the second flow channel is provided. The second flow channel has a second flow-in part and a second flow-out part. The refrigerant flows into the second flow channel through the second flow-in part. The refrigerant flows out of the second flow channel through the second flow-out part. The second flow-in part is provided in a region at the side opposite to a differential shaft across a motor shaft in the motor housing, at a position closer to the motor shaft as compared to an end portion at the side opposite to the differential shaft across the motor shaft in the motor housing.
A motor unit according to one aspect of the present disclosure comprises: a motor housing; an inverter housing; and a pump. The motor housing accommodates a motor. The inverter housing accommodates an inverter which is electrically connected to the motor. At least a part of the pump is disposed in the inverter housing.
A laminated core is tubular and includes a back yoke portion and tooth portions. The back yoke portion includes a cut line between the tooth portions adjacent to each other in a circumferential direction, the cut line extending in a radial direction from an inner peripheral surface. When one of back yoke portions adjacent to each other in a stacking direction is referred to as a first back yoke portion and the other is referred to as a second back yoke portion, at least a portion of the cut line in the first back yoke portion does not overlap the cut line in the second back yoke portion when the back yoke portion is viewed from the stacking direction. The first back yoke portion is at least partially bonded to the second back yoke portion.
H02K 15/02 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
100.
ROTOR, ROTARY ELECTRIC MACHINE, AND DRIVE APPARATUS
The present invention is a rotor rotatable about a center axis, and includes a rotor core having a plurality of magnet holes and a flow path through which a refrigerant flows, and a plurality of magnets accommodated in each of the plurality of magnet holes. The plurality of magnet holes and the flow path each extend in the axial direction. When viewed in the axial direction, the flow path is surrounded by the plurality of magnets. The plurality of magnets include a first magnet and a second magnet. The plurality of magnet holes include a first magnet hole accommodating the first magnet and a second magnet hole accommodating the second magnet. The first magnet is disposed radially outside the second magnet. When viewed in the axial direction, the shortest distance between the flow path and the first magnet is shorter than the shortest distance between the flow path and the second magnet.
