Abstract

A forming mold for a drum-shaped shaft tube and a demolding method therefor are provided. The forming mold includes a rotating body having a through hole that passes through the center of the body in an axial direction. The body is divided into multiple parts in a longitudinal direction. The parts are combined in a circumferential direction to form the rotating body. A longitudinal maximum material size of each part is less than a minimum diameter of the through hole. Two side edges of a cross section of at least one part are deflected toward adjacent parts with respect to radial lines at which two end points of an outer arc of the cross section are located, and a chord length of the outer arc of the cross section is less than a chord length of an inner arc of the cross section. The body has a forming section.

IPC Classes  ?

• B29C 33/48 - Moulds or coresDetails thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with means for collapsing or disassembling
• B29C 33/76 - Cores

Abstract

The present invention provides a stator winding and a motor. The stator winding comprises a stator iron core and at least two branch windings. The stator iron core is provided with Z stator slots which are circumferentially distributed; the stator slots are sequentially arranged as a first layer to an N-th layer from inside to outside along the radial direction of the stator core, N being an even number greater than or equal to 4; each branch winding comprises a plurality of coils connected in series in the stator slots, so that a plurality of coils are inserted in each layer of the stator slot; the coils in the first layer and/or the N-th layer of the stator slot are orderly circulated according to the rules of a single full-pitched coil, a single short-pitched coil, a single full-pitched coil, and a single long-pitched coil, and the coils in the rest layers of the stator slot are combined coils. According to the present application, the coils in the first layer and/or the N-th layer of the stator slot are arranged to be of a circulating structure by taking a single full-pitched coil, a single short-pitched coil, a single full-pitched coil, and a single long-pitched coil as a group, so that the inductance and the resistance among the branches can be effectively balanced, and the circulating current among the branches is avoided.

IPC Classes  ?

• H02K 3/04 - Windings characterised by the conductor shape, form or construction, e.g. with bar conductors

Abstract

A shaft tube joint structure of a drive shaft is disclosed. The structure includes an extension tube, a shaft tube, a convex tube, a concave tube, an inner adhesive rubber ring and an outer adhesive rubber ring; the extension tube and the shaft tube are abutted to each other; the convex tube is sleeved in the extension tube and the shaft tube at the abutting position therebetween, an inner seam having a variable gap size distribution is formed in an axis direction; the concave tube is sleeved on the extension tube and the shaft tube at the abutting position therebetween, an outer seam having a variable gap size distribution is formed in the axis direction. The inner adhesive rubber ring and the outer adhesive rubber ring are fully used for simultaneously transmitting a power torque, thus improving the power torque bearing capability of the shaft tube joint structure.

IPC Classes  ?

• F16D 3/20 - Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
• F16D 1/027 - Couplings for rigidly connecting two coaxial shafts or other movable machine elements for connecting two abutting shafts or the like non-disconnectable, e.g. involving gluing, welding or the like

Abstract

Disclosed are an oil cooling system for a motor and an oil cooling method for a motor. The oil cooling system for a motor comprises an oil cooling housing assembly, a stator assembly arranged in the oil cooling housing assembly, and a rotor assembly arranged in the stator assembly and rotatably connected to the stator assembly by means of a bearing. A right end of the oil cooling housing assembly is provided with an end cover assembly. A housing oil circuit is arranged among the oil cooling housing assembly, the stator assembly and the end cover assembly. A rotor oil circuit is arranged in the rotor assembly. A housing oil inlet passage and a housing oil return passage in communication with the housing oil circuit is arranged on the oil cooling housing assembly. A rotor oil inlet passage in communication with the rotor oil circuit is arranged on the rotor assembly. The rotor oil circuit is in communication with the housing oil return passage. According to the present invention, heating components such as a stator core, a stator winding, a rotor core and the bearing can be simultaneously cooled, so that the motor is efficiently and sufficiently cooled; moreover, the present invention has relatively good manufacturability and cost advantages.

IPC Classes  ?

• H02K 9/19 - Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil

Abstract

A three-pin-shaft type movable universal joint having a roller structure, the joint comprising a shaft fork (10), a three-pin shaft (20) provided with a shaft head (22), a roller wheel (30) and a roller set (40); the roller set (40) comprises several rollers (50) which are distributed in the circumferential direction of the shaft head (22) and which are located on the same plane; the inner periphery of the roller wheel (30) is provided with a matching spherical surface (31); each roller (50) comprises a first matching section (51) parallel to the shaft head (22), and a second matching section (52) and third matching section (53) respectively connected to inner and outer ends of the first matching section (51). The first matching section (51) is a cylinder, and the first matching section (51) is in line-contact fit with the outer peripheral surface of the shaft head (22). The second matching section (52) and the third matching section (53) are both in contact fit with the matching spherical surface of the roller wheel (30), and the roller set (40) enables the roller wheel (30) to move along the shaft head (22) and turn over around the shaft head (22). The movement manner of the rollers is rolling and sliding, the sliding and movement resistance of the three-pin-shaft type movable universal joint under a large swing angle is greatly reduced, and a contact region of the rollers and the shaft head is large, thus ensuring that under the satisfied condition of the large swing angle, the bearing capacity of the roller wheel and the rollers is improved.

IPC Classes  ?

• F16D 3/205 - Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members one coupling part having radially projecting pins, e.g. tripod joints the pins extending radially outwardly from the coupling part

Abstract

The present invention relates to the technical field of motors, and relates in particular to an electric brush device for preventing electrical corrosion of a motor bearing and a motor comprising the electric brush device. The electric brush device comprises a motor rotating shaft, a motor housing, a ball body, an electric brush assembly, and a grounding support frame; one end of the motor rotating shaft is internally hollow and a cavity is formed; the ball body is arranged in the cavity and makes contact with the motor rotating shaft; the grounding support frame is connected to the motor housing; one end of the electric brush assembly is connected to the grounding support frame, and the other end abuts against the ball body; the motor rotating shaft, the ball body, the electric brush assembly, the grounding support frame, and the motor housing are sequentially connected to form an electrical conduction path, causing equal potential to be formed between the motor rotating shaft and the motor housing. An equal potential design between the motor rotating shaft and the motor housing is implemented by means of constructing the motor rotating shaft-ball body-electric brush assembly-grounding support frame-motor housing electrical conduction path, and thereby electrical corrosion and failure of a motor bearing is prevented, and the present invention has the advantages of having a simple and effective overall structure and being low-cost.

IPC Classes  ?

• H02K 11/40 - Structural association with grounding devices
• H02K 5/14 - Means for supporting or protecting brushes or brush holders

Abstract

The present invention relates to the technical field of integrated motors, and in particular to an electronic control integrated actuator motor, comprising a motor and a controller for controlling the motor. The controller comprises a housing internally provided with a cavity and an electronic circuit board installed in the cavity; the housing is installed on the motor; several electronic components generating heat are mounted on the electronic circuit board; heat dissipation protrusions are respectively formed on the inner cavity wall of the cavity at positions opposite to the electronic components; first gaps are formed between the heat dissipation protrusions and the electronic components opposite thereto, and the first gaps are filled with a thermal adhesive. During working, internal heat can be conducted to the controller housing by means of the thermal adhesive and the heat dissipation protrusions for heat dissipation, and therefore high power can be achieved by means of reliable heat dissipation; the thermal adhesive after curing is similar to rubber, and thus can effectively protect the electronic components in a vibration impact environment, so that strong vibration impact requirements can be met while using conventional components.

IPC Classes  ?

• H02K 11/30 - Structural association with control circuits or drive circuits

Abstract

Disclosed is a driving device of a hybrid vehicle, wherein the driving device transmits power from an engine (2) to an axle shaft (12) of a drive wheel (13), and the driving device also transmits power from an electric motor (16) to the axle shaft (12); an electric motor shaft (15) and an electric motor intermediate shaft (14) are arranged in parallel in a power transmission path from the electric motor (16) to the axle shaft (12); the electric motor shaft (15) is connected to a rotor shaft (16a) of the electric motor (16); the electric motor shaft (15) is provided with an electric motor shaft gear (15a), and the electric motor intermediate shaft (14) is provided with an electric motor intermediate shaft pinion (14a), an electric motor intermediate shaft large gear (14b) and a disconnection assembly (14c); the electric motor intermediate shaft pinion (14a) is engaged with a differential gear (11a) of a differential (11), and the differential (11) is connected to the axle shaft (12); the electric motor intermediate shaft large gear (14b) is engaged with the electric motor shaft gear (15a); and the disconnection assembly (14c) connects or disconnects the power transmission between the electric motor intermediate shaft large gear (14b) and the electric motor intermediate shaft pinion (14a). By means of the driving device of the hybrid vehicle, the loss of an electric motor during high-speed driving of the whole vehicle can be reduced, and the fuel consumption and power consumption of the whole vehicle are reduced.

IPC Classes  ?

• B60K 6/38 - Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the driveline clutches
• B60K 6/365 - Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings with the gears having orbital motion
• B60K 6/26 - Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the motors or the generators
• B60K 6/24 - Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the combustion engines

Abstract

A ball groove milling-free machining method for an inner race of an automobile universal joint. The method comprises the following steps: blanking; pre-upsetting; pre-forging; inner hole punching; pretreatment; and finish forging, which step comprises performing divided-flow forging on a pre-forged piece (13) by using a divided-flow forging die. The divided-flow forging die comprises a lower die, an upper die (20) and a reaming mandrel (30), wherein a lower-section ball groove profile hole is formed in the lower die; a star-shaped hole (21) and an upper-section ball groove profile hole (22) are formed in the upper die; and the reaming mandrel passes through the star-shaped hole, and a material dividing cavity (40) is formed between the reaming mandrel and a hole wall of the star-shaped hole. A final forged piece (14) is provided, at the upper end, with a divided-flow block (141) formed in the material dividing cavity, and is provided with ball grooves (143) formed in the lower-section and upper-section ball groove profile holes. The method further comprises: finish machining, which step comprises: finishing the ball grooves of the final forged piece, and turning off the outer-circle allowance and the divided-flow block from the final forged piece. In the method, divided-flow forging is performed on a pre-forged piece during final forging, such that the forming force during forging can be reduced, and the dimensional precision and stability of a final forged piece after finish forging can be improved, thereby omitting subsequent milling machining on ball grooves, and thus reducing costs.

IPC Classes  ?

• B21K 1/28 - Making machine elements wheelsMaking machine elements discs
• B21J 5/02 - Die forgingTrimming by making use of special dies

Abstract

A torque transfer structure for a constant velocity universal joint transmission shaft (10) and a hub bearing unit (20). The torque transfer structure comprises a constant velocity universal joint transmission shaft (10), a hub bearing unit (20) and a friction increasing washer (30), wherein the constant velocity universal joint transmission shaft (10) comprises a shaft shoulder (11) and a shaft portion (12), which axially extends from an end of the shaft shoulder (11); the hub bearing unit (20) comprises a hub (21) and a rolling bearing (22), which is assembled on the periphery of the hub (21), the hub (21) has a hub matching barrel (211), and the hub matching barrel (211) is provided with a matching hole (212) matching the shaft portion (12); and the friction increasing washer (30) is compressed between an end surface of the shaft shoulder (11) and an end surface of the hub matching barrel (211). Torque between the shaft shoulder (11) of the constant velocity universal joint transmission shaft (10) and the hub matching barrel (211) of the hub bearing unit (20) is transferred by providing the friction increasing washer (30), such that an end-surface spline structure is omitted, the structure and manufacturing process of the present invention are simplified, the weight of parts is reduced, and abnormal noise caused by relative sliding of contact surfaces between the constant velocity universal joint transmission shaft (10) and the hub bearing unit (20) is eliminated.

IPC Classes  ?

• B60K 17/22 - Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or type of main drive shafting, e.g. cardan shaft
• B60B 27/00 - Hubs
• B60B 35/12 - Torque-transmitting axles
• F16D 3/20 - Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members

Abstract

A parking executing mechanism. A pushing device comprises a pushing rod (5), a rotating rod (6), and a connecting portion (8); the pushing rod (5) comprises a pushing rod body (51), one end of the pushing rod body (51) is connected to a driving device, and the other end of the pushing rod body is provided with a circle of saw teeth (52); a plurality of pushing rod guide keys (53) are evenly provided on the outer wall of the end portion, away from the driving device, of the pushing rod body (51) in the circumferential direction; the rotating rod (6) comprises a rotating rod body (61), a plurality of rotating rod guide keys (62) are evenly provided on the outer wall of one end of the rotating rod body (61) in the circumferential direction, and a rotating rod inclined surface (621) is provided at one end of each rotating rod guide key (62); a cavity (81) is formed in the connecting portion (8); first sliding grooves (83) and second sliding grooves (84) are formed in the side wall of the cavity (81) in a staggered mode in the circumferential direction; and the outer diameters of the pushing rod guide keys (53) are smaller than the inner diameters of the first sliding grooves (83), which are smaller than the outer diameters of the rotating rod guide keys (62), which are smaller than the inner diameters of the second sliding grooves (84). According to the mechanism, an electromagnetic valve, the pushing rod, the rotating rod, and the connecting portion which are low in cost are used for replacing an execution motor and a lead screw, so that costs of the mechanism can be greatly reduced, and the controllability and durability of the mechanism are improved.

IPC Classes  ?

• B60T 7/10 - Disposition of hand control
• F16H 63/34 - Locking or disabling mechanisms

Abstract

The present invention relates to the technical field of power transmission systems, and in particular, to a forming mold for a drum-shaped shaft tube. The forming mold comprises a body. The body is a rotary body having a through hole axially passing through at the center; the body is divided into a plurality of parts along a longitudinal direction; the plurality of parts are combined in a circumferential direction to form the rotary body; the longitudinal maximum material size of each part is smaller than the minimum diameter of the through hole; two side edges of the cross section of at least one part are deflected towards the adjacent part with respect of the radial line at which two ends of the outer arc of the cross section are located, and the chord length of the outer arc of the cross section is smaller than the chord length of the inner arc of the cross section; the body has a forming section, and the contour of the outer peripheral surface of the forming section is the same as the contour of the inner peripheral surface of a drum-shaped shaft tube. Also provided is a demolding method for the mold, mainly comprising: sequentially pressing two ends of each part one by one so as to separate the parts from the drum-shaped shaft tube, thus falling into the through hole and taking out the parts from the through hole, thereby realizing demolding. The present invention has the advantages of simple structure and convenient demolding.

IPC Classes  ?

• B29C 33/48 - Moulds or coresDetails thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with means for collapsing or disassembling
• B29L 23/00 - Tubular articles

Abstract

A shaft tube joint structure of a drive shaft, comprising an extension tube (11), a shaft tube (2), a convex tube (3), a concave tube (4), an inner adhesive ring (7) and an outer adhesive ring (8); the extension tube and the shaft tube abut each other; the convex tube is inserted in the extension tube and the shaft tube at the abutting position therebetween, and an inner seam (5) having a variable gap size distribution is formed in the axis direction; and the concave tube is sleeved on the extension tube and the shaft tube at the abutting position therebetween, and an outer seam (6) having a variable gap size distribution is formed in the axis direction. The inner seam and the outer seam are respectively filled with the inner adhesive ring and the outer adhesive ring, so that the extension tube and the shaft tube are connected to each other, and the inner adhesive ring and the outer adhesive ring are fully used to simultaneously transmit a power torque, improving the power torque bearing capability of the shaft tube joint structure of a drive shaft.

IPC Classes  ?

• F16D 3/16 - Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
• F16C 3/02 - ShaftsAxles

Abstract

An angle-adjustable tripod universal joint which has one tripod, three rollers and one universal joint outer part. An inner wall of the universal joint outer part has three roller tracks, and one roller is disposed in each of the roller tracks and rolls along the roller track. The inner cavity of each roller has a rotatably disposed spherical shaft head of the tripod. The inner wall of each roller track has a guiding groove. The peripheral shape of each roller is cylindrical. The bottom surface of the guiding groove is a plane surface, and two side surfaces of the guiding groove are flat surfaces perpendicular to the plane surface. The peripheral surface of each roller is partially inserted into the corresponding guiding groove, and the peripheral surface of the roller is tangent to the corresponding plane surface.

IPC Classes  ?

• F16D 3/202 - Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members one coupling part having radially projecting pins, e.g. tripod joints

Abstract

An angle-adjustable tripod universal joint comprises a shaft (1), a roller (3) and a universal joint outer part (2). The universal joint outer part has a roller track (21) on the inner wall thereof. The roller is disposed within and rolls along the roller track. A ball-shaped shaft head (11) on the shaft rotates and remains in the internal cavity of the roller. The roller track has a guiding groove (201) thereon. The peripheral shape of the roller is cylindrical. The bottom surface (203) of the guiding groove is a horizontal surface, and two side surfaces (204) of the guiding groove are flat surfaces perpendicular to the horizontal surface. Part of the peripherical surface of the roller is inserted into a guiding groove, and the peripheral surface of the roller is tangent to the horizontal surface. The universal joint reduces the slip resistance and additional axial load of a tripod universal joint at a large operating angle.

IPC Classes  ?

• F16D 3/20 - Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members

Abstract

A two-speed transmission device, comprising: an input shaft (6), an output shaft (3) and an idler shaft (9) that are disposed in parallel, the idler shaft (9) being located between the input shaft (6) and the output shaft (3); a first speed changing mechanism, comprising a first driving gear (5) and a first driven gear (2) that are engaged with each other, and a first one-way clutch (4) which matches the first driving gear (5) or the first driven gear (2), the first driving gear (5) being located on the input shaft (6) and the first driven gear (2) being located on the output shaft (3); a second speed changing mechanism, comprising a second driving gear (7) located on the input shaft (6), a second driven gear (10) located on the output shaft (3), an idler (8) located on the idler shaft (9), and a second one-way clutch (11) which matches the second driving gear (7), the idler (8) or the second driven gear (10), a speed reduction ratio of the first speed changing mechanism being greater than a reduction ratio of the second speed changing mechanism; and a main drive system and an auxiliary drive system used for an electric vehicle.

IPC Classes  ?

• F16H 3/10 - Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously- meshing gears, that can be disengaged from their shafts with one or more one-way clutches as an essential feature