CN219247622U

CN219247622U - Electric hub structure

Info

Publication number: CN219247622U
Application number: CN202122386753.9U
Authority: CN
Inventors: 莫飞; 梁永挺; 隋志勇
Original assignee: Taizhou Luqiao Jindouyun Tecnology Co ltd
Current assignee: Taizhou Luqiao Jindouyun Tecnology Co ltd
Priority date: 2021-09-29
Filing date: 2021-09-29
Publication date: 2023-06-23
Anticipated expiration: 2031-09-29

Abstract

The utility model provides an electric hub structure, which comprises an inner hub and a hub motor, wherein an end cover is arranged on the inner hub, the hub motor comprises a motor shaft, a stator bracket and a stator winding, a magnetic ring bracket is rotationally connected on the motor shaft, a magnetic conduction ring is fixed on the magnetic ring bracket, a plurality of magnetic steel sheets are fixed on the magnetic conduction ring, and the electric hub structure further comprises a clutch component and a driving component. Under the condition of power failure, the driving part controls the clutch part to move along the axial direction of the motor shaft, so that the end cover is disconnected with the magnetic ring bracket. At the moment, the magnetic conduction ring and the stator sleeve group are kept in a relatively static state, magnetic resistance is not easy to generate, and the riding process is easier and more labor-saving. The clutch members include sun gears, planet gears, and ring gears. Under the same power condition, the hub motor arranged in this way has the advantages of smaller volume and lighter weight, and can save the material cost to a certain extent. Furthermore, as the volume of the selected hub motor is smaller, a power supply with larger volume can be installed, and the cruising ability is more durable.

Description

Electric hub structure

Technical Field

The utility model relates to an electric vehicle accessory, in particular to an electric hub structure.

Background

Currently, chinese patent publication No. CN208412033U discloses an electric wheel for an electric motorcycle, comprising an outer hub, an inner hub mechanism, and a plurality of spokes connecting the outer hub and the inner hub mechanism. The inner hub mechanism comprises an inner hub and a hub motor arranged in the inner hub, and a power module is arranged between the inner hub and the hub motor. The two sides of the inner hub are respectively provided with a first end cover and a second end cover. The hub motor comprises an annular stator and a stator bracket for supporting the annular stator, wherein a plurality of magnetic steel sheets are uniformly distributed on the outer ring of the annular stator, the outer periphery of each magnetic steel sheet is provided with a magnetic conduction ring, and the magnetic conduction rings are fixed on the inner side of the first end cover. The middle part of the stator bracket is fixedly provided with a motor shaft. Under the condition of electrifying, the electric motorcycle can be driven to move forwards through the hub motor, and at the moment, the magnetic conduction ring drives the inner hub to rotate through the first end cover. Under the condition of power failure, the pedal can be used for driving the electric motorcycle to move forward, and at the moment, the inner hub can drive the magnetic conduction ring to rotate through the first end cover. The magnetic conduction ring and the magnetic steel sheet can generate magnetic resistance when relatively rotating, so that the riding process is laborious.

Disclosure of Invention

In view of the above, the present utility model is directed to an electric hub structure, which has the advantages of no reluctance riding under the condition of power failure and labor saving in the riding process.

In order to solve the technical problems, the technical scheme of the utility model is as follows: the utility model provides an electric hub structure, includes interior wheel hub and sets up wheel hub motor in the interior wheel hub, the last fixed end cover that is provided with of interior wheel hub, wheel hub motor includes fixed connection motor housing on the end cover, rotate connect at the inside motor shaft of motor housing, fixed connection at the epaxial stator support, fixed connection at the epaxial stator winding of stator, it is connected with the magnetic ring support to rotate on the motor shaft, be fixed with the magnetic ring on the magnetic ring support, the magnetic ring is located stator winding's periphery, just be fixed with a plurality of magnetic steel sheets along circumference on the magnetic ring, wheel hub motor still includes clutch parts and drive part, the clutch parts is installed in the motor housing, just clutch parts with the motor shaft slides and links to each other, drive part can drive the clutch parts is followed the axial of motor shaft slides, is used for controlling motor housing with magnetic ring support connects or breaks off.

According to the technical scheme, under the condition of electrifying, the clutch part is controlled to move along the axial direction of the motor shaft through the driving part, so that the motor shell is connected with the magnetic ring bracket. At this time, the stator winding drives the magnetic ring and the magnetic ring bracket to rotate circumferentially through magnetic force, and the magnetic ring bracket drives the inner hub to rotate circumferentially through the clutch component, so that the power-assisting effect is achieved. Under the condition of power failure, the clutch part is controlled to move along the axial direction of the motor shaft through the driving part, so that the motor shell is disconnected with the magnetic ring bracket. At this time, the rotation of the inner hub cannot be transmitted to the magnetic ring bracket and the magnetic conduction ring, the magnetic conduction ring and the stator sleeve group are kept in a relatively static state, magnetic resistance is not easy to generate, and the riding process is easier and more labor-saving.

Preferably, the clutch component comprises a sun gear, a planet gear and a gear ring, the sun gear is rotationally connected with the motor shaft, a gear support is arranged on the sun gear, the gear support is fixedly connected with the magnetic ring support, the planet gear is meshed with the sun gear, a connecting shaft is fixedly arranged at the center of the planet gear, one end of the connecting shaft is fixedly connected with the clutch component, the other end of the connecting shaft is inserted into the magnetic ring support, the gear ring is fixedly connected with the inner wall of the motor shell, and the gear ring is meshed with the planet gear.

Through the technical scheme, in the electrified state, the driving part drives the connecting shaft on the planetary gear to be inserted and fixed on the magnetic ring bracket. When the magnetic ring is driven to circumferentially rotate by the magnetic ring support under the action of the stator winding, the magnetic ring support drives the gear ring to circumferentially rotate through the planetary gear, and the gear ring drives the inner hub to rotate, so that the effect of assisting riding is achieved. In the power-off state, the driving part drives the connecting shaft on the planetary gear to be separated from the magnetic ring support, at the moment, the rotation of the inner hub cannot be transmitted to the magnetic ring support and the magnetic conduction ring through the planetary gear, the magnetic conduction ring and the stator winding are kept in a relatively static state, magnetic resistance is not easy to generate, and the riding process is more labor-saving.

The sun gear, the planetary gear and the gear ring are matched with each other to play a role in increasing torque, so that only a hub motor with smaller volume and smaller power is needed to be selected for effective power-assisted riding. Moreover, under the same power condition, the hub motor arranged in this way has the advantages of smaller volume and lighter weight, and can save the material cost to a certain extent. Furthermore, as the volume of the selected hub motor is smaller, a power supply with larger volume can be installed, and the cruising ability is more durable.

Preferably, the driving part comprises a sliding seat axially connected to the motor shaft in a sliding manner, a rotating seat rotatably connected to the periphery of the sliding seat, a driving piece for driving the sliding seat to slide, and a reset spring for controlling the sliding seat to reset.

Through the technical scheme, when the motor is used, the sliding seat can be controlled by the driving piece to slide along the axial direction of the motor shaft so as to control the motor shell to be connected with or disconnected from the magnetic ring bracket. After the driving piece is closed, the reset spring can drive the sliding seat to reset through elastic force.

Preferably, the magnetic ring bracket is provided with at least two support bearings side by side, and the magnetic ring bracket is rotationally connected with the motor shaft through the support bearings;

a limiting cavity is formed between two adjacent support bearings, a limiting block is arranged at the position, opposite to the limiting cavity, of the magnetic ring support, and the limiting block is rotationally connected in the corresponding limiting cavity.

Through the technical scheme, the magnetic ring support is rotatably connected to the motor shaft through the support bearing, so that abrasion of the magnetic ring support can be slowed down, and the service life of the magnetic ring support is prolonged. The two support bearings and the limiting block are matched to limit the magnetic ring support, so that the magnetic ring support cannot slide along the axial direction of the motor shaft.

Preferably, a clamping spring is arranged at the end part of the connecting shaft, and the clamping spring is abutted against the magnetic ring bracket.

Through the technical scheme, the clamping springs are arranged on the end parts of the connecting shafts, so that the length of the connecting shafts inserted into the magnetic ring brackets can be effectively controlled, and the clutch process of the hub motor is quicker.

Preferably, the two sides of the rotating seat are provided with baffle plates, and the two baffle plates are respectively abutted against the two side walls of the sliding seat.

Through the technical scheme, the two baffle plates can be matched to limit the axial relative sliding between the sliding seat and the rotating seat, so that the smooth unfolding of the clutch process is ensured.

Preferably, the motor shaft is rotatably connected with a power supply bin, the power supply bin is fixedly connected with the motor shell, and a motor controller and a battery supply which are electrically connected with the hub motor are arranged in the power supply bin.

Through above-mentioned technical scheme, during the use, the power storehouse rotates along with interior hub to guarantee that motor controller and confession battery can be connected with in-wheel motor stability. When in use, the on-off of the hub motor can be controlled by the motor controller. When the hub motor is used, the power supply is used for supplying power to the hub motor so as to ensure the normal operation of the hub motor.

Preferably, the power supply bin comprises a mounting bracket, a controller cover plate and a battery cover plate, wherein one side of the mounting bracket, which is away from the hub motor, is provided with a controller mounting groove, the motor controller is arranged in the controller mounting groove, the controller cover plate is covered at the notch of the controller mounting groove, one side of the mounting bracket, which is away from the hub motor, is provided with a battery mounting groove, the power supply battery is arranged in the battery mounting groove, and the battery cover plate is covered at the notch of the battery mounting groove.

Through the technical scheme, the motor controller is arranged in the controller mounting groove, so that the controller can be conveniently dismounted. The controller apron covers the socket of controller mounting groove, and so dust and impurity are difficult for entering into the controller mounting groove, and motor controller is difficult for deviating from in the controller mounting groove. The battery is installed in the battery mounting groove, so that the battery can be conveniently dismounted. The notch of battery mounting groove is covered to the battery apron, and so dust and impurity are difficult for entering into in the battery mounting groove, and the power supply is difficult for deviating from in the motor mounting groove.

Preferably, a connecting rod is arranged at the end part of the controller cover plate, which is far away from the hub motor, the connecting rod is abutted against the mounting bracket, a blocking cover is arranged at the end part of the connecting rod, and the blocking cover is rotatably sleeved on the motor shaft.

Through above-mentioned technical scheme, can strengthen the connection stability between controller apron and the installing support through connecting rod and fender lid for the controller apron is difficult for separating with the installing support mutually.

Preferably, a clamping groove is formed in the side wall of the mounting bracket, a clamping block is arranged in the side wall of the battery cover plate, and the clamping block is clamped in the clamping groove.

Through the technical scheme, the clamping blocks and the clamping grooves are matched with each other, so that the connection stability of the battery cover plate and the mounting bracket can be improved, and the battery cover plate is not easy to separate from the mounting bracket.

To sum up:

1. under the condition of power failure, the magnetic conduction ring and the stator winding are kept in a relatively static state, so that the bicycle can be ridden without magnetic resistance, and labor is saved;

2. the sun gear, the planetary gear and the gear ring are matched, so that the torque of the hub motor can be increased, and the power assisting effect is more obvious;

3. the hub motor internally provided with the sun gear, the planetary gear and the gear ring has smaller volume, lighter weight and lower material cost;

4. the battery with larger volume can be adapted, and the endurance is more durable.

Drawings

FIG. 1 is a schematic diagram of an embodiment;

FIG. 2 is a partial cross-sectional view of one embodiment;

fig. 3 is a partial cross-sectional view of a second embodiment.

Reference numerals: 1. an inner hub; 2. an end cap; 3. a hub motor; 31. a motor housing; 32. a motor shaft; 33. a stator support; 34. a stator winding; 4. a magnetic ring bracket; 5. a magnetic conductive ring; 6. a magnetic steel sheet; 7. a clutch member; 71. a sun gear; 72. a planetary gear; 73. a gear ring; 8. a driving part; 81. a sliding seat; 82. a rotating seat; 83. a driving member; 84. a return spring; 9. a gear bracket; 10. a connecting shaft; 11. a support bearing; 12. a limiting cavity; 13. a limiting block; 14. clamping springs; 15. a baffle; 16. a power supply bin; 161. a mounting bracket; 162. a controller cover plate; 163. a battery cover plate; 17. a motor controller; 18. a battery supply; 19. a controller mounting groove; 20. a battery mounting groove; 21. a connecting rod; 22. a blocking cover; 23. a clamping groove; 24. and (5) clamping blocks.

Detailed Description

The following detailed description of the utility model is provided in connection with the accompanying drawings to facilitate understanding and grasping of the technical scheme of the utility model.

An electric hub structure, as shown in fig. 1 and 2, includes an inner hub 1 and a hub motor 3 disposed at the center of the inner hub 1. The wheel hub motor 3 during operation can drive the inner wheel hub 1 to rotate, plays the effect of helping hand riding.

As shown in fig. 2 and 3, an end cap 2 is provided at one end of the inner hub 1, and the end cap 2 is coaxially provided with the inner hub 1. The in-wheel motor 3 includes a motor housing 31, a motor shaft 32, a stator bracket 33, and stator windings 34. The motor housing 31 is coaxially fixed to the end cover 2, and the motor housing 31 is located inside the inner hub 1. The motor shaft 32 is rotatably connected in the motor housing 31, and both ends of the motor shaft 32 protrude from the outer side wall of the motor housing 31. The stator bracket 33 is fixedly provided on the motor shaft 32. The stator winding 34 is wound around the stator support 33, and a stable magnetic field is generated around the stator winding 34 when the stator winding 34 is in communication with the battery.

The motor shaft 32 is sleeved with a magnetic ring bracket 4, two support bearings 11 are arranged in the magnetic ring bracket 4 side by side, and the magnetic ring bracket 4 is rotatably connected with the motor shaft 32 through the two support bearings 11. An annular limiting cavity 12 is formed between the two support bearings 11, an annular limiting block 13 is arranged at the inner wall of the magnetic ring bracket 4, and the limiting block 13 is rotationally connected inside the limiting cavity 12. The limit block 13 and the limit cavity 12 are matched with each other to limit the relative axial sliding between the magnetic ring bracket 4 and the motor shaft 32. The end of the magnetic ring bracket 4 is provided with a magnetic conduction ring 5, and the magnetic conduction ring 5 is positioned at the periphery of the stator winding 34. A plurality of magnetic steel sheets 6 are fixed on the inner wall of the magnetic conduction ring 5 along the circumferential direction, and the magnetic steel sheets 6 can drive the magnetic conduction ring 5 and the magnetic ring bracket 4 to rotate in the circumferential direction after the stator winding 34 is electrified.

The in-wheel motor 3 further includes a clutch member 7 and a driving member 8. The clutch member 7 is mounted on the motor housing 31 and slidably connected to the motor shaft 32. The driving part 8 can drive the clutch part 7 to slide along the axial direction of the motor shaft 32 so as to control the connection or disconnection of the end cover 2 and the magnetic ring bracket 4.

The clutch member 7 includes a sun gear 71, a planetary gear 72, and a ring gear 73. The sun gear 71 is rotatably sleeved on the motor shaft 32. The sun gear 71 is provided with a gear bracket 9, and the gear bracket 9 is fixedly connected to the magnetic ring bracket 4 through screws. When the magnetic ring bracket 4 rotates along with the magnetic conduction ring 5, the sun gear 71 can be driven to synchronously rotate through the gear bracket 9. The planetary gears 72 mesh with the sun gear 71. A connecting shaft 10 is fixed at the center of the planetary gear 72, one end of the connecting shaft 10 is fixedly connected with the clutch component 7, and the other end is inserted into the magnetic ring bracket 4. The connecting shaft 10 is provided with a clamp spring 14, and the clamp spring 14 is abutted against the end face of the magnetic ring bracket 4, which is close to the planetary gear 72. A ring gear 73 is fixedly attached to the inner wall of the end cap 2, and the ring gear 73 intermeshes with the pinion gears 72.

The driving member 8 includes a slide seat 81, a rotation seat 82, a driving piece 83, and a return spring 84. The sliding seat 81 is sleeved on the motor shaft 32, a guide groove is formed in the sliding seat 81, and the guide groove is arranged along the axial direction of the sliding seat 81. A guide block is axially arranged on the side wall of the motor shaft 32 and is slidably connected to the inside of the guide groove. The guide block and the guide groove are matched with each other, and can be used for playing a role in limiting and guiding the sliding of the sliding seat 81. The rotating seat 82 is sleeved on the outer periphery of the sliding seat 81, and the rotating seat 82 can rotate along the circumferential direction of the sliding seat 81. The two sides of the rotating seat 82 are respectively provided with a baffle, and the two baffles are respectively propped against the two sides of the sliding seat 81. The cooperation of the two baffles can limit the rotation seat 82 from being separated from the sliding seat 81. The driving member 83 includes a cable penetrating the end cap 2 and fixedly connected to the sliding seat 81. In use, the sliding seat 81 can be driven to be far away from the magnetic ring bracket 4 by the inhaul cable. The return spring 84 is installed between the end cover 2 and the sliding seat 81, and is used for driving the sliding seat 81 to slide to one side of the magnetic ring bracket 4.

The motor shaft 32 is provided with a power supply compartment 16 on the side remote from the end cap 2. The power supply compartment 16 includes a mounting bracket 161, a controller cover 162, and a battery cover 163. The mounting bracket 161 is rotatably sleeved on the motor shaft 32, and the mounting bracket 161 is fixed with the motor housing 31 by a screw. The mounting bracket 161 is provided with a placement groove at an end portion close to the end cover 2, and the in-wheel motor 3 is accommodated in the placement groove. The end of the mounting bracket 161 away from the end cap 2 is provided with a controller mounting groove 19, and the controller mounting groove 19 is provided along the circumferential direction of the mounting bracket 161. The controller mounting groove 19 is internally provided with a motor controller 17, and the motor controller 17 is electrically connected to the in-wheel motor 3 for controlling the use state of the in-wheel motor 3. The controller cover 162 is disposed at the notch of the controller mounting groove 19 to protect the motor controller 17. The end of the controller cover 162 is provided with a connecting rod 21, and the connecting rod 21 abuts against the mounting bracket 161. The end of the connecting rod 21 is provided with a blocking cover 22, the blocking cover 22 is rotatably connected to the motor shaft 32, and the blocking cover 22 is pressed and fixed with the mounting bracket 161 through a screw. The end of the mounting bracket 161 away from the end cap 2 is provided with a battery mounting groove 20, and the battery mounting groove 20 is provided along the circumferential direction of the mounting bracket 161. The battery mounting groove 20 is internally provided with a power supply battery 18, and the power supply battery 18 is electrically connected to the in-wheel motor 3 and is used for supplying power to the in-wheel motor 3. The battery cover 163 covers the notch of the battery mounting groove 20 to protect the battery 18. The clamping groove 23 is formed in the side wall of the mounting bracket 161, the clamping block 24 is arranged in the side wall of the battery cover plate 163, and the clamping block 24 is clamped in the clamping groove 23 and used for stably connecting the battery cover plate 163 to the mounting bracket 161.

Of course, the above is only a typical example of the utility model, and other embodiments of the utility model are also possible, and all technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of the utility model claimed.

Claims

1. The utility model provides an electric hub structure, is in including interior wheel hub (1) and setting in wheel hub motor (3) in interior wheel hub (1), fixedly on interior wheel hub (1) be provided with end cover (2), wheel hub motor (3) are including fixed connection motor housing (31) on end cover (2), rotate motor shaft (32) of connecting inside motor housing (31), stator support (33) of fixed connection on motor shaft (32), stator winding (34) of fixed connection on stator support (33), characterized by: the motor is characterized in that a magnetic ring support (4) is rotationally connected to the motor shaft (32), a magnetic ring (5) is fixed to the magnetic ring support (4), the magnetic ring (5) is located on the periphery of the stator winding (34), a plurality of magnetic steel sheets (6) are circumferentially fixed to the magnetic ring (5), the hub motor (3) further comprises a clutch component (7) and a driving component (8), the clutch component (7) is installed in the motor housing (31), the clutch component (7) is connected with the motor shaft (32) in a sliding mode, and the driving component (8) can drive the clutch component (7) to slide along the axial direction of the motor shaft (32) so as to control the motor housing (31) to be connected with or disconnected from the magnetic ring support (4).

2. An electric hub structure according to claim 1, characterized in that: the clutch part (7) comprises a sun gear (71), a planet gear (72) and a gear ring (73), wherein the sun gear (71) is rotationally connected to the motor shaft (32), a gear support (9) is arranged on the sun gear (71), the gear support (9) is fixedly connected to the magnetic ring support (4), the planet gear (72) is meshed with the sun gear (71), a connecting shaft (10) is fixedly arranged at the center of the planet gear (72), one end of the connecting shaft (10) is fixedly connected with the clutch part (7), the other end of the connecting shaft is inserted into the magnetic ring support (4), the gear ring (73) is fixedly connected to the inner wall of the motor shell (31), and the gear ring (73) is meshed with the planet gear (72).

3. An electric hub structure according to claim 1, characterized in that: the driving part (8) comprises a sliding seat (81) axially connected to the motor shaft (32) in a sliding manner, a rotating seat (82) rotatably connected to the periphery of the sliding seat (81), a driving piece (83) used for driving the sliding seat (81) to slide, and a reset spring (84) used for controlling the sliding seat (81) to reset.

4. An electric hub structure according to claim 1, characterized in that: at least two support bearings (11) are arranged on the magnetic ring support (4) side by side, and the magnetic ring support (4) is rotationally connected to the motor shaft (32) through the support bearings (11);

a limiting cavity (12) is formed between two adjacent support bearings (11), a limiting block (13) is arranged at the position, opposite to the limiting cavity (12), of the magnetic ring support (4), and the limiting block (13) is rotationally connected in the corresponding limiting cavity (12).

5. An electric hub structure according to claim 2, characterized in that: the end part of the connecting shaft (10) is provided with a clamp spring (14), and the clamp spring (14) is abutted against the magnetic ring bracket (4).

6. An electric hub structure according to claim 3, characterized in that: both sides of the rotating seat (82) are provided with baffle plates (15), and the two baffle plates (15) are respectively abutted against both side walls of the sliding seat (81).

7. An electric hub structure according to claim 1, characterized in that: the motor shaft (32) is rotationally connected with a power supply bin (16), the power supply bin (16) is fixedly connected with the motor shell (31), and the power supply bin (16) is internally provided with a motor controller (17) and a power supply battery (18) which are electrically connected with the hub motor (3).

8. An electric hub structure according to claim 7, wherein: the power supply bin (16) comprises a mounting bracket (161), a controller cover plate (162) and a battery cover plate (163), wherein one side of the mounting bracket (161) deviating from the hub motor (3) is provided with a controller mounting groove (19), the motor controller (17) is installed in the controller mounting groove (19), the controller cover plate (162) covers the notch of the controller mounting groove (19), one side of the mounting bracket (161) deviating from the hub motor (3) is provided with a battery mounting groove (20), the power supply battery (18) is installed in the battery mounting groove (20), and the battery cover plate (163) covers the notch of the battery mounting groove (20).

9. An electric hub structure according to claim 8, wherein: the controller cover plate (162) is far away from the connecting rod (21) is arranged on the end part of the hub motor (3), the connecting rod (21) is propped against the mounting bracket (161), the blocking cover (22) is arranged on the end part of the connecting rod (21), and the blocking cover (22) is rotatably sleeved on the motor shaft (32).

10. An electric hub structure according to claim 8, wherein: clamping grooves (23) are formed in the side walls of the mounting brackets (161), clamping blocks (24) are arranged in the side walls of the battery cover plates (163), and the clamping blocks (24) are clamped in the clamping grooves (23).