CN114261276A - Electric hub - Google Patents
Electric hub Download PDFInfo
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- CN114261276A CN114261276A CN202210077861.4A CN202210077861A CN114261276A CN 114261276 A CN114261276 A CN 114261276A CN 202210077861 A CN202210077861 A CN 202210077861A CN 114261276 A CN114261276 A CN 114261276A
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- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 46
- 230000009467 reduction Effects 0.000 claims description 25
- 238000007789 sealing Methods 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The invention relates to an electric hub, comprising a rim for fitting to a tyre, and a drive device mounted in the rim; the driving device comprises a motor, a speed reducer and a braking module; the motor includes a stator and a rotor rotatably mounted to the stator; the speed reducer is used for reducing the output speed of the rotor and then driving the wheel rim; the brake module is a normally closed brake module, is installed in the motor or between the motor and the speed reducer, and is used for braking the rotor or the speed reducer in the case of power failure. The electric hub comprises the motor, the speed reducer and the normally closed braking module, and the braking module brakes the rotor or the speed reducer when the power is off, so that the safety of a product is improved.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the field of electric vehicle hub driving devices, in particular to an electric vehicle hub.
[ background of the invention ]
The electric vehicle is popularized and popularized with the advantages of environmental protection, safety and the like, and is applied to various fields of life and production, and the electric vehicle wheel is widely used as a core component of the electric vehicle, particularly used for low-speed logistics vehicles. The low-speed logistics vehicle is applied to environments such as warehouses and logistics transfer stations, the speed is generally not higher than 60km/h, and the load is within the range of 200-800 kg. When the low-speed logistics vehicles are powered off accidentally, production accidents can be caused if the low-speed logistics vehicles cannot brake timely.
[ summary of the invention ]
An object of the present invention is to improve the safety of a low-speed logistics vehicle.
To this end, a first aspect of the invention provides a motorized hub comprising a rim for fitting to a tyre, and a drive unit mounted within the rim; the driving device comprises a motor, a speed reducer and a braking module; the motor includes a stator and a rotor rotatably mounted to the stator; the speed reducer is used for reducing the output speed of the rotor and then driving the wheel rim; the brake module is a normally closed brake module, is installed in the motor or between the motor and the speed reducer, and is used for braking the rotor or the speed reducer in the case of power failure.
In one embodiment of the invention, the driving device is an integrated driving device, and further comprises a first shell, a second shell and a fastener; the motor, the brake module and the reduction gearbox are accommodated in a space formed by the first shell and the second shell; the fastener fixes the first shell and the second shell into a whole.
In one embodiment of the present invention, the rotor has a central rotating shaft, which is fixedly connected with the rotor, and one end of the central rotating shaft extends into the speed reducer and is connected with the speed reducer, and the speed reducer reduces the output speed of the central rotating shaft; the brake module comprises a brake disc and an electromagnetic valve, and the brake disc is sleeved on the central rotating shaft and rotates synchronously with the central rotating shaft; the shell of the electromagnetic valve is fixedly connected with the stator and comprises an electromagnet, an elastic piece and a friction disc; the elastic element is used for applying pressure to the friction disc to enable the friction disc to brake the brake disc; the electromagnet is used for overcoming the pressure of the elastic piece on the friction disc so as to release braking.
In one embodiment of the invention, the housing of the electromagnetic valve comprises a cover body and a cover plate which are connected together by a locking piece, wherein one end of the cover body is open, and the cover plate is positioned at the open end of the cover body and is separated from the cover body by a certain distance; the friction disc is positioned between the cover body and the cover plate and axially moves along the central rotating shaft under the action of the locking piece or the guide piece and is prevented from rotating; the electromagnet and the elastic member are installed in the cover body, and the brake disc is located between the friction disc and the cover body.
In an embodiment of the invention, the center portion of the brake disc is fixedly sleeved on the central rotating shaft and extends along the central rotating shaft, and at least partially extends into the cover body.
In one embodiment of the present invention, the central rotating shaft has a spline portion, and the central portion of the brake disc is fixedly sleeved to the spline portion.
In one embodiment of the invention, the motor is an outer rotor motor, the rotor surrounds the stator, and the brake module is housed within the stator.
In one embodiment of the invention, the first housing is fixedly connected with the stator and surrounds the motor, and the second housing is fixedly connected with the speed reducer and surrounds the speed reducer; the first shell or the second shell provides support for the central rotating shaft of the rotor.
In one embodiment of the present invention, the speed reducer is a hub reduction gear, the hub reduction gear and the motor are arranged along an axial direction of a central rotating shaft of the rotor, and a rotating center of the central rotating shaft is coaxial with a rotating center of an output end of the hub reduction gear; the output end of the hub reduction gear is detachably connected with the rim; and a sealing structure is arranged at the joint of the output end of the hub reduction gear and the second shell.
In one embodiment of the invention, the rim comprises spokes and an annular rim, the rim is used for assembling a tire, the spokes are positioned in the rim and connected to the inner wall of the rim; the spoke deviates from the center of the rim and forms an accommodating space with the rim to accommodate the integrated driving device; the output end of the hub reduction gear is detachably connected to the spoke.
The electric hub comprises the motor, the speed reducer and the normally closed braking module, and the braking module brakes the rotor or the speed reducer when the power is off, so that the safety of a product is improved.
[ description of the drawings ]
FIG. 1 is a schematic view of a tire mounted motorized hub provided by one embodiment of the present invention;
FIG. 2 is a schematic view of the motorized hub with the tire removed;
FIG. 3 is an exploded view of the motorized hub of FIG. 2;
FIG. 4 is a schematic view of a wheel rim used with the motorized hub of FIG. 2;
FIG. 5 is a cross-sectional view of the integrated drive of the motorized hub illustrated in FIG. 2;
FIG. 6 is a schematic view of the brake module and central spindle of FIG. 5;
FIG. 7 is a longitudinal cross-sectional view of the assembly shown in FIG. 6;
FIG. 8 is a schematic view of a motorized hub provided in accordance with another embodiment of the present invention;
FIG. 9 is a perspective view of the integrated drive of the motorized hub illustrated in FIG. 8;
fig. 10 is a sectional view of the integrated driving device shown in fig. 8.
[ detailed description ] embodiments
The invention is further described below with reference to the figures and examples.
The first embodiment is as follows:
referring to fig. 1, an electric wheel hub 100 according to an embodiment of the present invention includes a wheel rim 10 for mounting a tire 15 and an integrated driving apparatus 20, and the integrated driving apparatus 20 is detachably mounted in the wheel rim 10.
Referring to fig. 2, the integrated drive device 20 is fitted into the rim 10 from one side of the rim 10. One end of the integrated driving device 20 is connected with the rim 10 by bolt fastening, thereby realizing the detachable installation of the driving device 20.
Referring to fig. 3, in the present embodiment, the integrated driving device 20 includes a motor 21, a reducer 22, and a connecting member 23, wherein the motor 21 and the reducer 22 are integrally connected by the connecting member 23. When some parts in the integrated driving device 20, such as the motor 21, need to be replaced, only the bolts for fastening the integrated driving device 20 and the rim 10 to each other need to be unscrewed, and the integrated driving device 20 is taken out from the rim 10 for replacement, which is simple and convenient to operate. For example, when the tire 15 (see fig. 1) needs to be replaced and the rim 10 needs to be removed, the integrated drive device 20 does not have to be removed from the axle, and maintenance is performed in accordance with conventional vehicle maintenance.
Referring to fig. 4, the rim 10 includes spokes 13 and an annular rim 11. The rim 11 is used to mount a tire 15 (see fig. 1), and the spokes 13 are located within the rim 11 and are connected to the inner wall of the rim 11. The spokes 13 are offset from the center of the rim 11 and form a receiving space with the rim 11 for receiving the integrated drive device 20. The spokes 13 are provided with a plurality of coupling holes 14 for bolts to pass through for detachably coupling the integrated driving unit 20.
Referring to fig. 5, in the present embodiment, the connecting member 23 forms a housing of the integrated driving apparatus 20, in which the motor 21 and the reducer 22 are housed. The connecting member 23 includes a first housing 231, a second housing 232, and a fastener 233, the motor 21 and the reducer 22 are accommodated in a space formed by the first housing 231 and the second housing 232, and the fastener 233 fixes the first housing 231 and the second housing 232 as a whole. Specifically, the first housing 231 is fixedly connected to the stator 210 and surrounds the motor 21, and the second housing 232 is fixedly connected to the decelerator 22 and surrounds the decelerator 22.
The motor 21 includes a stator 210 and a rotor 211, and the rotor 211 is rotatably mounted to the stator 210. In this embodiment, the motor 21 is an outer rotor brushless motor, and the stator 210 includes a stator cover, a stator core fixedly sleeved on the stator cover, a stator winding wound around the stator core, and the like. The stator cover of the stator 210 is fixedly coupled to the first housing 231. The rotor 211 includes a central rotating shaft 212, a ring body fixedly sleeved on the central rotating shaft 212 and surrounding the central rotating shaft 212, and a plurality of permanent magnets mounted on an inner wall of the ring body. The ring body of the rotor 211 surrounds the stator core of the stator 210 such that the permanent magnets thereof are opposed to the stator core. The central rotation shaft 212 of the rotor 211 passes through the center of the stator 210 and is rollingly supported by the stator cover of the stator 210, thereby enabling the rotor 211 to rotate relative to the stator 210. The rotor 211 is accommodated in the first housing 231, and one end of the central rotation shaft 212 of the rotor 211 extends into the speed reducer 22 and is connected to the speed reducer 22, and the speed reducer 22 is used for driving the rim 10 after reducing the output speed of the rotor 211.
Referring to fig. 5 to 7, in the present embodiment, the integrated driving device 20 further includes a braking module 25, the motor 21 is an external rotor motor, and the braking module 25 is mounted to the stator 210 through a locking member 257, so that the whole of the integrated driving device 20 and the mounting space of the electric hub 100 are saved, and the compactness of the whole structure is achieved. The brake module 25 is used for braking control of the rotor 211. The brake module 25 is a normally closed type brake module, and includes a brake disc 258 that is synchronously rotatable with the central rotating shaft 212 of the rotor 211, and a solenoid valve for braking the brake disc 258. The solenoid valve includes a cover 251 having an opening at one end, and a cover 255 positioned at the opening end of the cover 251 and spaced apart from the cover 251. The cover 251 and the cover 255 are integrally fixed by a fastener 257 to form a housing of the brake module 25, which is fixed with respect to the motor stator 210. Between the cover 251 and the cover plate 255, a friction disk 253 is mounted to be axially movable along the central rotation shaft 212 but not rotatable with respect to the central rotation shaft 212. A brake disc 258 is located between the friction disc 253 and the cover plate 255. In this embodiment, the central rotating shaft 212 has a spline portion 213, and the central portion of the brake disc 258 is fixedly sleeved on the spline portion 213 so as to rotate synchronously with the central rotating shaft 212. It will be appreciated that the center portion of the brake disc 258 may extend a certain length in the axial direction of the central rotating shaft 212 to enhance the fixed connection therebetween. In this embodiment, the center portion of the brake disc 258 extends along the axial direction of the central rotating shaft 212, and extends into the cover 251, and has a clearance with the inner hole of the cover 251 so as to be able to rotate relative to the cover 251.
An electromagnet and an elastic member 252 are provided in the cover 251, and the elastic member 252 is used to apply pressure to the friction disk 253 to press the brake disk 258 against the friction disk 253, thereby braking the brake disk 258. The electromagnet is used to overcome the pressure of the elastic member 252 against the friction disk 253 to release the brake. When the electromagnetic valve is electrified and opened, the friction disc 253 retreats and is released, no braking output is generated on the brake disc 258, and the brake disc 258 and the central rotating shaft 212 are allowed to rotate; in the power-off state, the friction disk 253 is in a compressed state, and outputs braking to the brake disk 258, and the central rotating shaft 212 of the rotor 211 is held tightly by the brake disk 258 and is in a normally closed braking state.
The friction disk 253 is guided by the lock member 257 to move axially and prevent rotation. Optionally, a guide 256 may be added to at least one of the cover 251 and the cover plate 255 for guiding the friction disk 253 to move axially and prevent rotation.
The brake module 25 of this embodiment is an integrated module, and the brake module 25 is sleeved on the central rotating shaft 212, so that the brake disc 258 and the central rotating shaft 212 rotate synchronously, and the housing (e.g., the cover 251 or the cover 255) is fixed to the motor stator. Preferably, the braking module 25 is located within the motor stator 210, surrounded by a stator core, to improve space utilization. It is understood that the brake module 25 may also be disposed between the motor 21 and the reducer 22.
In this embodiment, the connecting ends of the first housing 231 and the second housing 232 are provided with mounting positions of fasteners 233. More specifically, the fastener 233 is a screw or a bolt, and the fastener 233 is screwed into the first and second housings 231 and 232 in the axial direction of the motor 21 to fix the first and second housings 231 and 232 as a whole. An auxiliary fastening member such as a washer may be further added between the first housing 231 and the second housing 232, thereby enhancing the fastening of the connection.
In order to make the position of the central rotating shaft 212 more accurate and stable, in the present embodiment, the first housing 231 or the second housing 232 is provided with a rotating shaft supporting plate 236 between the motor 21 and the decelerator 22, and the rotating shaft supporting plate 236 is used to provide support for the central rotating shaft 212. Specifically, the rotation shaft supporting plate 236 is provided with a through hole in which the first bearing 215 is disposed, and the central rotation shaft 212 is supported by the first bearing 215, so that the rotational output of the motor 21 is more stably transmitted to the decelerator 22 via the central rotation shaft 212. Preferably, the central rotating shaft 212 is supported by a first bearing 215 and a second bearing 216, and the first bearing 215 and the second bearing 216 are respectively located at both ends of the stator 210 of the motor 21.
In the present embodiment, the speed reducer 22 is a hub reduction gear, the hub reduction gear and the motor 21 are arranged along the axial direction of the central rotating shaft 212, and the rotation center of the output end of the hub reduction gear, the rotation center of the central rotating shaft 212 and the rotation center of the rim 10 are coaxial; the output of the hub reduction gear is detachably connected to the rim 10.
The hub reduction gear includes a reduction gear of a planetary gear structure, a reduction gear of a bevel gear structure, or the like. In this embodiment, the hub reduction gear is a planetary gear structure, and includes a sun gear 221, a plurality of planetary gears 222, an inner gear ring 223, and a rotating frame 224. One end of the central rotating shaft 212 extending into the hub reduction gear is coaxially and fixedly connected with the sun gear 221, a plurality of planet gears 222 are distributed around the sun gear 221, and an inner gear ring 223 surrounds a plurality of planet gears 222 and enables a plurality of planet gears 222 to be meshed with the sun gear 221 and the inner gear ring 223. One end of the rotating frame 224 is connected with the plurality of planetary gears 222 to rotate along with the revolution of the plurality of planetary gears 222, and the other end of the rotating frame 224 is connected with the rim 10 as the output end of the wheel hub reduction gear; the ring gear 223 is fixedly connected to the first housing 231 or the second housing 232.
In the present embodiment, the motor 21 is an outer rotor motor, but the rotor 211 of the motor 21 is also accommodated in the first housing 231. And the first housing 231 provides support for the rotor 211, the second housing 232 provides support for the reducer 22, and the first housing 231 and the second housing 232 are fixedly connected together, thereby ensuring stable and coaxial positions of the output end of the motor 21 (i.e., the central rotating shaft 212) and the output end of the reducer 22 (i.e., the rotating frame 224).
In order that the rotating frame 224 receives the output of the plurality of planetary gears 222 after the speed reduction and can stably drive the rim 10, in the present embodiment, the connecting member 23, for example, the first housing 231, provides support for the rotating frame 224, specifically, the connecting member 23 provides support for both axial ends of the rotating frame 224 through the third bearing 225 and the fourth bearing 226, respectively, and the third bearing 225 and the fourth bearing 226 are respectively located at both ends of the planetary gears 222. In this way, the first bearing 215, the second bearing 216, the third bearing 225, and the fourth bearing 226 are fixed with respect to the connecting member 23, thereby ensuring the coaxiality of the rotation center of the output end (the center rotating shaft 212) of the motor 21 and the rotation center of the output end (the rotating frame 224) of the speed reducer 22. This design takes up shock vibrations from the tire 15 through the bearings as well as bending moments. More preferably, one of the first and second housings 231 and 232 is integrally formed with the ring gear 223.
Preferably, the relevant connection interface is provided with a sealing structure to prevent external foreign substances such as liquid and the like from entering the inside of the integrated drive device 20, so as to improve the protection of the product. For example, the interface of the reducer assembly connected to the motor structure and the journal of the output rotating frame are both designed with seals, and the joint of the output end of the hub reducer and the second housing 232 is provided with a sealing structure to improve the protection performance of the product.
Example two:
referring to fig. 8 to 10, the present embodiment provides an electric hub 100 also including a rim 10 for mounting a tire 15 and an integrated drive device 20, the integrated drive device 20 being detachably mounted in the rim 10 by bolts 24. The integrated driving device 20 includes a motor 21, a reducer 22 and a connecting member 23, and the motor 21 and the reducer 22 are integrally connected by the connecting member 23. The connecting member 23 forms a housing of the integrated driving apparatus 20, and includes a first housing 231, a second housing 232, and a fastener 233, the motor 21 and the reducer 22 are accommodated in a space formed by the first housing 231 and the second housing 232, and the fastener 233 fixes the first housing 231 and the second housing 232 as a whole.
The main difference between this embodiment and the first embodiment is the location of the third bearing 225 and the fourth bearing 226 that support the speed reducer. In this embodiment, the connecting member 23 provides support for both axial ends of the rotating frame 224 through a third bearing 225 and a fourth bearing 226, respectively, and the third bearing 225 and the fourth bearing 226 are both located on the motor-away side of the planetary gear 222.
Example three:
a low-speed logistics vehicle comprises an electric hub 100 of the first embodiment and an electric hub 100 of the second embodiment.
The above examples merely represent preferred embodiments of the present invention, which are described in more detail and detail, but are not to be construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications, such as combinations of different features in various embodiments, may be made without departing from the spirit of the invention, and these are within the scope of the invention.
Claims (10)
1. A motorized hub comprising a rim for fitting to a tyre, and a drive device mounted in the rim, characterized in that the drive device comprises an electric motor, a reducer and a braking module; the motor includes a stator and a rotor rotatably mounted to the stator; the speed reducer is used for reducing the output speed of the rotor and then driving the wheel rim; the brake module is a normally closed brake module, is installed in the motor or between the motor and the speed reducer, and is used for braking the rotor or the speed reducer in the case of power failure.
2. The motorized hub of claim 1, wherein said drive is an integral drive, further comprising a first housing, a second housing, and a fastener; the motor, the brake module and the reduction gearbox are accommodated in a space formed by the first shell and the second shell; the fastener fixes the first shell and the second shell into a whole.
3. The motorized hub of claim 2, wherein said rotor has a central shaft fixedly connected to said rotor and having one end extending into said reducer and connected to said reducer, said reducer reducing the output speed of said central shaft; the brake module comprises a brake disc and an electromagnetic valve, and the brake disc is sleeved on the central rotating shaft and rotates synchronously with the central rotating shaft; the shell of the electromagnetic valve is fixedly connected with the stator and comprises an electromagnet, an elastic piece and a friction disc; the elastic element is used for applying pressure to the friction disc to enable the friction disc to brake the brake disc; the electromagnet is used for overcoming the pressure of the elastic piece on the friction disc so as to release braking.
4. The motorized hub of claim 3, wherein said solenoid valve housing includes a cover and a cover plate connected together by a fastener, said cover being open at one end and said cover plate being spaced from said cover at an open end of said cover; the friction disc is positioned between the cover body and the cover plate and axially moves along the central rotating shaft under the action of the locking piece or the guide piece and is prevented from rotating; the electromagnet and the elastic member are installed in the cover body, and the brake disc is located between the friction disc and the cover body.
5. The motorized electric hub of claim 4, wherein said brake disc has a central portion fixedly sleeved about and extending along said central axis of rotation and at least partially extending into said cover.
6. The motorized hub of claim 5, wherein said central shaft has a splined portion and said brake disk is fixedly sleeved at its central portion.
7. The motorized hub of claim 1, wherein said motor is an external rotor motor, said rotor surrounding said stator, said brake module being housed within said stator.
8. The motorized electric hub of claim 2, wherein said first housing is fixedly attached to said stator and surrounds said electric motor, and said second housing is fixedly attached to said speed reducer and surrounds said speed reducer; the first shell or the second shell provides support for the central rotating shaft of the rotor.
9. The motorized hub of claim 2, wherein said speed reducer is a hub reduction gear, said hub reduction gear being arranged with said motor along an axial direction of a central rotation shaft of said rotor, a rotation center of said central rotation shaft being coaxial with a rotation center of an output end of said hub reduction gear; the output end of the hub reduction gear is detachably connected with the rim; and a sealing structure is arranged at the joint of the output end of the hub reduction gear and the second shell.
10. The motorized hub defined in claim 2 wherein said rim includes spokes and an annular rim for mounting a tire, said spokes being located within said rim and connected to an inner wall of said rim; the spoke deviates from the center of the rim and forms an accommodating space with the rim to accommodate the integrated driving device; the output end of the hub reduction gear is detachably connected to the spoke.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220067513 | 2022-01-11 | ||
| CN2022200675134 | 2022-01-11 |
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| CN114261276A true CN114261276A (en) | 2022-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220193313.3U Active CN216805104U (en) | 2022-01-11 | 2022-01-24 | Electric hub |
| CN202210077861.4A Pending CN114261276A (en) | 2022-01-11 | 2022-01-24 | Electric hub |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220193313.3U Active CN216805104U (en) | 2022-01-11 | 2022-01-24 | Electric hub |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN216805104U (en) * | 2022-01-11 | 2022-06-24 | 华翼动力科技(东莞)有限公司 | Electric hub |
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2022
- 2022-01-24 CN CN202220193313.3U patent/CN216805104U/en active Active
- 2022-01-24 CN CN202210077861.4A patent/CN114261276A/en active Pending
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| CN111845320A (en) * | 2019-04-28 | 2020-10-30 | 浙江万安科技股份有限公司 | Drive-brake integrated electric wheel integrating disc type hub motor and speed reducer and automobile |
| CN209938306U (en) * | 2019-06-04 | 2020-01-14 | 吉林大学 | Two fender speed change systems of external rotor wheel hub motor and electric automobile based on two electromagnetic brake |
| CN209913656U (en) * | 2019-06-28 | 2020-01-07 | 扬州安弛机电有限公司 | Electromagnetic brake motor |
| CN110266143A (en) * | 2019-07-15 | 2019-09-20 | 沈骁坚 | Mobile mechanism and its electric wheelchair based on hub motor |
| CN210686768U (en) * | 2019-08-30 | 2020-06-05 | 深圳优地科技有限公司 | Wheel hub brake structure and mobile robot |
| CN211046680U (en) * | 2019-12-30 | 2020-07-17 | 宁波千江电机有限公司 | Gear motor with electromagnetic brake |
| CN212503829U (en) * | 2020-04-17 | 2021-02-09 | 苏州雄大电机有限公司 | External rotor forklift motor |
| CN212695836U (en) * | 2020-07-30 | 2021-03-12 | 浙江尤奈特电机有限公司 | Wheel hub motor with brake function |
| CN212695843U (en) * | 2020-07-30 | 2021-03-12 | 浙江尤奈特电机有限公司 | Hub motor |
| CN213948123U (en) * | 2021-07-16 | 2021-08-13 | 新誉轨道交通科技有限公司 | Electric vehicle and wheel-side driving device thereof |
| CN216805104U (en) * | 2022-01-11 | 2022-06-24 | 华翼动力科技(东莞)有限公司 | Electric hub |
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| CN216805104U (en) | 2022-06-24 |
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