CN210344110U - Wheelchair vehicle and hub motor electromagnetic brake system - Google Patents
Wheelchair vehicle and hub motor electromagnetic brake system Download PDFInfo
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- CN210344110U CN210344110U CN201921073702.7U CN201921073702U CN210344110U CN 210344110 U CN210344110 U CN 210344110U CN 201921073702 U CN201921073702 U CN 201921073702U CN 210344110 U CN210344110 U CN 210344110U
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- movable pressing
- wheel motor
- pressing block
- brake
- housing
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Abstract
The utility model discloses a wheelchair scooter and an in-wheel motor electromagnetic brake system, wherein the wheelchair scooter comprises the in-wheel motor electromagnetic brake system; the in-wheel motor electromagnetic brake system includes: a hub motor and an electromagnetic brake; the in-wheel motor includes: a stator and an outer rotor rotating relative to the stator; the stator includes: a stator shaft; the outer rotor includes: a hollow rotor shaft; the stator shaft passes through the rotor shaft; the electromagnetism is stopped and is included: the brake comprises a shell, a brake block, a movable pressing block, an elastic piece and an electromagnet, wherein the elastic piece is used for applying acting force to the movable pressing block to push the movable pressing block to move so that the brake block contacts the movable pressing block and/or the shell to brake, and the electromagnet is used for applying elastic force overcoming the elastic piece to attract the movable pressing block to move when the electromagnet is electrified; a guide column for guiding the movable pressing block to move is formed or arranged on the shell; the brake pad is mounted to the rotor shaft for synchronous rotation therewith. The utility model discloses an useful part lies in, realizes that electromagnetism is stopped and in-wheel motor's combination can carry out the electromagnetism brake to in-wheel motor.
Description
Technical Field
The utility model relates to an in-wheel motor electromagnetic braking system especially relates to an in-wheel motor electromagnetic braking system who is applied to wheelchair car of riding instead of walk.
Background
The wheelchair is also called an electric wheelchair or an old-aged scooter. The motor is used for driving the wheels to rotate, so that the wheelchair can move on the ground to realize the walking instead of walk.
The wheelchair instead of walk vehicle adopts a brake structure to brake. The hub motor has great advantages in cost and structural rationality compared with the existing brushless motor with a brush motor and a gear box, so that the usage amount of the hub motor is increased year by year. But the brake of the hub motor has not been a good solution. The traditional electromagnetic brake is difficult to be applied to the hub motor.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects of the prior art, the utility model provides an in-wheel motor electromagnetic braking system and adopt wheelchair car of riding instead of walk of this system can brake in-wheel motor.
In order to achieve the above object, the utility model adopts the following scheme:
an in-wheel motor electromagnetic braking system comprising: a hub motor and an electromagnetic brake;
the in-wheel motor includes: a stator and an outer rotor rotating relative to the stator; the stator includes: a stator shaft; the outer rotor includes: a hollow rotor shaft; the stator shaft passes through the rotor shaft; the stator also includes a stator coil. The outer rotor also comprises an outer end cover of the motor.
The electromagnetism is stopped and is included: the brake comprises a shell, a brake block, a movable pressing block, an elastic piece and an electromagnet, wherein the elastic piece is used for applying acting force to the movable pressing block to push the movable pressing block to move so that the brake block contacts the movable pressing block and/or the shell to brake, and the electromagnet is used for applying elastic force overcoming the elastic piece to attract the movable pressing block to move when the electromagnet is electrified;
the electromagnet is fixed to the shell; a guide column for guiding the movable pressing block to move is formed or arranged on the shell; the brake pad is mounted to the rotor shaft for synchronous rotation therewith.
Further, the brake pad is slidably mounted to the rotor shaft; the moving direction of the movable pressing block and the sliding direction of the brake pad are both parallel to the rotating axis of the outer rotor.
Further, the housing includes: the inner baffle is used for contacting with the brake pad; the brake block is positioned between the movable pressing block and the inner baffle;
when the electromagnet is powered off, the elastic piece pushes the movable pressing block to move towards the inner baffle, and the movable pressing block and the inner baffle clamp the brake pad from two sides.
Further, the electromagnetism is stopped still to include: a rotor connecting block; the rotor connecting block is fixed to the rotor shaft; the brake pad is slidably connected to the rotor connecting block and rotates synchronously with the rotor connecting block.
Furthermore, two ends of the elastic piece are respectively connected to the movable pressing piece and the electromagnet.
Further, the stator shaft is fixed to the housing through one end of the rotor shaft.
Further, the electromagnetism is stopped still to include: a support member that supports between the rotor shaft and the housing and enables the rotor shaft to rotate relative to the housing; the supporting piece is a bearing or a shaft sleeve; two supports are respectively mounted to both ends of the housing.
Further, the middle part of casing is equipped with the mounting structure who is used for installing the electromagnetism to stop.
A wheelchair walker comprising: a frame and a wheel rotatable relative to the frame; it is characterized in that the wheelchair scooter also comprises: the hub motor electromagnetic brake system; the wheel is mounted to the outer rotor; the housing is mounted to the frame.
Further, the electromagnetism is stopped still to include: a support member that supports between the rotor shaft and the housing and enables the rotor shaft to rotate relative to the housing; the supporting piece is a bearing or a shaft sleeve; the two supporting pieces are respectively installed at two ends of the shell; the middle portion of the housing is mounted to the frame.
The utility model discloses an useful part lies in, realizes that electromagnetism is stopped and in-wheel motor's combination brakes in-wheel motor. The arrangement of the supporting piece and the installation mode of the electromagnetic brake and the hub motor reduce the arm of force length of a cantilever structure of the hub motor, so that the stability of the system is improved and the service life of the system is prolonged.
Drawings
FIG. 1 is a schematic view of the installation of the wheel hub motor electromagnetic braking system and the frame of the wheelchair vehicle;
FIG. 2 is a cross-sectional view of the in-wheel motor electromagnetic braking system of FIG. 1, shown in a state in which the electromagnet is de-energized;
FIG. 3 is a cross-sectional view of another state of the in-wheel motor electromagnetic braking system of FIG. 2, showing the electromagnet energized;
FIG. 4 is an exploded view of the in-wheel motor electromagnetic braking system of FIG. 2;
FIG. 5 is a schematic view of the hub motor electromagnetic braking system of FIG. 2 from another perspective.
The brake comprises a frame 200, an in-wheel motor electromagnetic brake system 100, an in-wheel motor 10, a stator 11, a stator shaft 111, an outer rotor 12, a rotor shaft 121, an electromagnetic brake 20, a shell 21, an outer shell 211, an outer shell body 2111, an outer shell end cover 2112, an inner shell 212, a front cover 2121, a middle shell 2122, a rear cover 2123, an inner baffle 21a, a guide column 21b, a brake pad 22, a movable pressing block 23, an elastic element 24, an electromagnet 25, a rotor connecting block 26 and a supporting element 27.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 to 5, a wheelchair scooter comprises: frame 200, wheel, in-wheel motor 10 and electromagnetic brake 20. The wheels rotate relative to the frame 200. The in-wheel motor 10 drives the wheel to rotate. The in-wheel motor and the electromagnetic brake 20 constitute an in-wheel motor electromagnetic brake system 100. The in-wheel motor electromagnetic brake system 100 includes an in-wheel motor 10 and an electromagnetic brake 20. Only a portion of the frame 200 of the wheelchair walker is shown in figure 1. This part is used to connect the electromagnetic brake 20 and the in-wheel motor 10.
The in-wheel motor 10 includes: a stator 11 and an outer rotor 12 rotating relative to the stator 11. The stator 11 includes: a stator shaft 111. The outer rotor 12 includes: the rotor shaft 121 is hollow or hollow. The rotor shaft 121 forms a center hole. The stator shaft 111 passes through the rotor shaft 121. The stator shaft 111 passes through the center hole. The rotor shaft 121 is fitted around the outer periphery of the stator shaft 111.
The electromagnetic brake 20 includes: the brake comprises a shell 21, a brake pad 22, a movable pressing block 23, an elastic piece 24 and an electromagnet 25. The wheels are mounted to the outer rotor 12. The housing 21 is mounted to the vehicle frame 200. The housing 21 is formed with a mounting structure. The mounting structure of the housing 21 fixes the electromagnetic brake 20 to the vehicle frame 200. The housing 21 mounts the in-wheel motor 10 and the electromagnetic brake 20 to the vehicle frame 200.
The movable mass 23 moves relative to the housing 21. Specifically, the movable pressing piece 23 slides with respect to the housing 21. The elastic member 24 is used for applying a force to the movable pressing piece 23 to push the movable pressing piece 23 to move so that the brake pad 22 contacts the movable pressing piece 23 and the shell 21 to perform braking. Specifically, the movable presser 23 is a metal member that can be attracted by the electromagnet 25. The electromagnet 25 attracts the movable pressing piece 23 to move when being electrified. The attraction force of the electromagnet 25 to the movable pressing piece 23 is opposite to the direction of the acting force of the elastic piece 24 to the movable pressing piece 23. When the electromagnet 25 is electrified, the movable pressing block 23 is attracted to move by overcoming the elastic piece 24. The electromagnet 25 is fixed to the housing 21.
As an alternative embodiment, the brake can be applied by friction through the contact of the brake pad and the movable pressure piece. The brake can also be carried out by the contact of the brake block and the shell through friction force.
The housing 21 is provided with a guide post 21b for guiding the movement of the movable pressing piece 23. The movable pressing piece 23 is formed with a guide hole. The guide post 21b slides in the guide hole. As an alternative embodiment, the guide post may be formed by the housing as part of the housing.
The brake pads 22 are mounted to the rotor shaft 121 for synchronous rotation with the rotor shaft 121. Specifically, the brake pad 22 is slidably mounted to the rotor shaft 121. The moving direction of the movable pressing block 23 and the sliding direction of the brake pad 22 are parallel to the rotating axis of the outer rotor 12. Specifically, the electromagnetic brake 20 further includes: a rotor connecting block 26. The rotor connecting block 26 is fixed to the rotor shaft 121. The brake pads 22 are slidably connected to the rotor attachment block 26 and rotate in unison with the rotor attachment block 26. The rotor connecting block 26 is square. The brake pads 22 are provided with square holes that mate with the rotor attachment blocks 26.
The housing 21 includes: the inner barrier 21 a. The inner barrier 21a is adapted to contact the brake pad 22. The brake pad 22 is located between the movable pressing piece 23 and the inner retainer 21 a. When the electromagnet 25 is powered off, the elastic piece 24 pushes the movable pressing piece 23 to move towards the inner baffle 21a, and the movable pressing piece 23 and the inner baffle 21a clamp the brake pad 22 from two sides so as to realize braking.
As a specific embodiment, both ends of the elastic member 24 are connected to the movable pressing piece 23 and the electromagnet 25, respectively. The elastic member 24 applies a force to the movable pressing piece 23 moving in a direction away from the electromagnet 25. The resilient member 24 is a compression spring. The plurality of elastic members 24 are evenly distributed in the circumferential direction of the rotational axis of the outer rotor 12. The plurality of guide posts 21b are evenly distributed in the circumferential direction of the rotation axis of the outer rotor 12. The number of the guide posts 21b is equal to the number of the elastic members 24. As an alternative embodiment, the number of guide posts and the number of resilient members may not be equal.
One end of the stator shaft 111 passing through the rotor shaft 121 is fixed to the housing 21. The stator shaft 111 is fixed to the housing 21 by a nut.
The electromagnetic brake 20 further includes: and a support 27 that supports between the rotor shaft 121 and the housing 21 and enables the rotor shaft 121 to rotate relative to the housing 21. In one embodiment, the support 27 is a bearing. Two supports 27 are respectively mounted to both ends of the housing 21. As an alternative embodiment, the support may be a bushing.
The middle part of the shell 21 is provided with a mounting structure for mounting the electromagnetic brake 20. The middle portion of the housing 21 is mounted to the vehicle frame 200. The housing 21 is a metal housing, and is used for quickly dissipating heat generated in the braking process, so that heat dissipation is facilitated and heat dissipation performance is good.
The supporting piece 27 supports the rotor shaft 121, the electromagnetic brake 20 and the in-wheel motor 10 are installed through the shell 21, and compared with an installation mode that the electromagnetic brake and the in-wheel motor are directly fixed to the frame 200 through the stator shaft, the force arm length of a cantilever structure is shortened, so that the stability of the system is improved, and the service life of the system is prolonged.
As a specific embodiment, the housing 21 includes an outer shell 211 and an inner shell 212. The outer housing 211 is fixed to the inner housing 212. The outer case 211 is disposed at the outer circumference of the inner case 211. The housing 211 includes a housing body 2111 and a housing end cap 2112. The inner housing 212 includes a front cover 2121, a middle cover 2122, and a rear cover 2123. Two supports 27 are mounted to the front cover 2121 and the rear cover 2123, respectively. A front cover 2121 and a rear cover 2123 are fixed to both ends of the middle case 2122. As an alternative implementation, the housing body may be formed as one piece with the mid-shell and the housing end caps may be formed as one piece with the rear cover. Alternatively, only the inner case and no outer case are provided.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by adopting equivalent replacement or equivalent transformation fall within the protection scope of the present invention.
Claims (10)
1. An in-wheel motor electromagnetic braking system, comprising: a hub motor and an electromagnetic brake;
the in-wheel motor includes: a stator and an outer rotor rotating relative to the stator; the stator includes: a stator shaft; the outer rotor includes: a hollow rotor shaft; the stator shaft passes through the rotor shaft;
the electromagnetism is stopped and is included: the brake comprises a shell, a brake block, a movable pressing block, an elastic piece and an electromagnet, wherein the elastic piece is used for applying acting force to the movable pressing block to push the movable pressing block to move so that the brake block contacts the movable pressing block and/or the shell to brake, and the electromagnet is used for applying elastic force overcoming the elastic piece to attract the movable pressing block to move when the electromagnet is electrified;
the electromagnet is fixed to the housing; a guide column for guiding the movable pressing block to move is formed or installed on the shell; the brake pad is mounted to the rotor shaft for synchronous rotation therewith.
2. The in-wheel motor electromagnetic brake system of claim 1,
the brake pad is slidably mounted to the rotor shaft; the moving direction of the movable pressing block and the sliding direction of the brake pad are both parallel to the rotating axis of the outer rotor.
3. The in-wheel motor electromagnetic brake system of claim 2,
the housing includes: an inner baffle for contacting the brake pad; the brake block is positioned between the movable pressing block and the inner baffle;
when the electromagnet is powered off, the elastic piece pushes the movable pressing block to move towards the inner baffle, and the movable pressing block and the inner baffle clamp the brake pad from two sides.
4. The in-wheel motor electromagnetic brake system of claim 2,
the electromagnetism is stopped still includes: a rotor connecting block; the rotor connecting block is fixed to the rotor shaft; the brake pad is slidably connected to the rotor connecting block and rotates synchronously with the rotor connecting block.
5. The in-wheel motor electromagnetic brake system of claim 1,
and two ends of the elastic piece are respectively connected to the movable pressing block and the electromagnet.
6. The in-wheel motor electromagnetic brake system of claim 1,
the stator shaft is fixed to the housing through one end of the rotor shaft.
7. The in-wheel motor electromagnetic brake system of any one of claims 1 to 6,
the electromagnetism is stopped still includes: a support member that supports between the rotor shaft and the housing and enables the rotor shaft to rotate relative to the housing; the supporting piece is a bearing or a shaft sleeve; the two support members are respectively mounted to both ends of the housing.
8. The in-wheel motor electromagnetic brake system of claim 7,
the middle part of casing is equipped with and is used for installing the mounting structure that the electromagnetism was stopped.
9. A wheelchair walker comprising: a frame and a wheel rotatable relative to the frame; it is characterized in that the wheelchair scooter further comprises: the in-wheel motor electromagnetic brake system of any one of claims 1 to 6; the wheel is mounted to the outer rotor; the housing is mounted to the frame.
10. The wheelchair walker of claim 9,
the electromagnetism is stopped still includes: a support member that supports between the rotor shaft and the housing and enables the rotor shaft to rotate relative to the housing; the supporting piece is a bearing or a shaft sleeve; the two supporting pieces are respectively installed at two ends of the shell; the middle portion of the housing is mounted to the frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921073702.7U CN210344110U (en) | 2019-07-10 | 2019-07-10 | Wheelchair vehicle and hub motor electromagnetic brake system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921073702.7U CN210344110U (en) | 2019-07-10 | 2019-07-10 | Wheelchair vehicle and hub motor electromagnetic brake system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210344110U true CN210344110U (en) | 2020-04-17 |
Family
ID=70195080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921073702.7U Active CN210344110U (en) | 2019-07-10 | 2019-07-10 | Wheelchair vehicle and hub motor electromagnetic brake system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210344110U (en) |
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2019
- 2019-07-10 CN CN201921073702.7U patent/CN210344110U/en active Active
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