CN213948123U - Electric vehicle and wheel-side driving device thereof - Google Patents
Electric vehicle and wheel-side driving device thereof Download PDFInfo
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- CN213948123U CN213948123U CN202121614746.3U CN202121614746U CN213948123U CN 213948123 U CN213948123 U CN 213948123U CN 202121614746 U CN202121614746 U CN 202121614746U CN 213948123 U CN213948123 U CN 213948123U
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Abstract
The utility model discloses an electric vehicle and a wheel edge driving device thereof, wherein the wheel edge driving device comprises a motor, a reducer and a brake, the motor comprises a motor shell and a motor rotating shaft arranged in the motor shell, and a friction disc of the brake is sleeved on the motor rotating shaft; the speed reducer comprises a speed reducer shell, a central wheel sleeved on a motor rotating shaft, a wheel connecting flange plate used for being connected with a wheel and a sealing end cover connected with the end part of the motor shell, wherein the wheel connecting flange plate, the sealing end cover and the central wheel are all connected with the speed reducer shell, and a bearing is arranged between the sealing end cover and the motor rotating shaft; the speed reducer or the motor shell is provided with a frame connecting flange plate used for being connected with wheels. Therefore, the axial size of the wheel edge driving device is shortened, the mass and the whole size of the wheel edge driving device are reduced, and the under-vehicle layout is facilitated.
Description
Technical Field
The utility model relates to an electric motor car technical field, more specifically say, relate to a wheel limit drive arrangement. Furthermore, the utility model discloses still relate to an electric motor car including above-mentioned wheel limit drive arrangement.
Background
In the prior art, a wheel driving device of an electric vehicle comprises a motor power assembly, a gear reduction assembly and a torsion damper, wherein the gear reduction assembly and the torsion damper are connected with the motor power assembly, the motor power assembly is fixed on a vehicle frame, the gear reduction assembly is connected with the torsion damper through a flat key, and the torsion damper is connected with a wheel through a transmission mechanism.
Therefore, the transmission structure of the wheel driving device is complex, the required installation space is large, and the space utilization rate of the space under the vehicle is low; the wheel driving device does not have a braking function, and a brake needs to be independently configured outside the system to ensure parking safety, so that the space utilization rate of the space under the vehicle is further reduced.
In summary, how to simplify the structure of the wheel-side driving device and reduce the overall size of the wheel-side driving device is a problem to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a wheel limit drive arrangement has shortened the axial dimensions, has reduced wheel limit drive arrangement's quality and overall dimension, is favorable to the overall arrangement under the car.
Furthermore, the utility model also provides an electric motor car including wheel limit drive arrangement.
In order to achieve the above object, the present invention provides the following technical solutions:
a wheel driving device comprises a motor, a speed reducer and a brake, wherein the motor comprises a motor shell and a motor rotating shaft arranged in the motor shell, and a friction disc of the brake is sleeved on the motor rotating shaft;
the speed reducer comprises a speed reducer shell, a central wheel sleeved on the motor rotating shaft, a wheel connecting flange plate used for being connected with a wheel and a sealing end cover connected with the end part of the motor shell, wherein the wheel connecting flange plate, the sealing end cover and the central wheel are all connected with the speed reducer shell, and a bearing is arranged between the sealing end cover and the motor rotating shaft;
the speed reducer or the motor shell is provided with a frame connecting flange plate used for being connected with a frame.
Preferably, the end part of the motor shell is provided with a positioning boss, the positioning boss is provided with a bolt connecting hole, and the sealing end cover is connected with the positioning boss through a bolt.
Preferably, the positioning boss is disposed around a circumferential surface of the motor housing.
Preferably, a groove for increasing creepage distance is formed in the inner wall surface of the sealing end cover, which is close to the motor winding end surface of the motor.
Preferably, the frame connecting flange is disposed on an outer wall surface of the end cover.
Preferably, the brake comprises a spring-loaded electromagnetic electric-loss brake.
Preferably, the brake is connected to an end of the motor remote from the speed reducer.
An electric vehicle comprises a vehicle body, wheels and a driving device for driving the wheels, wherein the driving device is the wheel edge driving device.
The wheel driving device provided by the utility model has the advantages that the wheel and the speed reducer are connected through the wheel connecting flange plate, the flange surface is utilized to output power, transmission structures such as a rotating shaft and a shaft coupling are not required to be added, the axial size of the wheel driving device is shortened, and the structure of the wheel driving device is simplified; the sealing end cover of the speed reducer is used as an end cover support at one side of the motor, so that on one hand, the axial size is shortened, on the other hand, the number of parts of the wheel edge driving device is reduced, and the quality and the overall size of the whole machine are reduced; the center wheel of the speed reducer and the friction disc of the brake are sleeved on the motor rotating shaft, so that transmission structures such as a coupler are omitted, the structure is further simplified, the axial size is reduced, and the arrangement under the vehicle is facilitated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a specific embodiment of a wheel-side driving device provided by the present invention.
In fig. 1:
the structure comprises a motor 1, a motor shell 11, a positioning boss 111, a motor rotating shaft 12, a speed reducer 2, a speed reducer shell 21, a sealing end cover 22, a frame connecting flange 221, a groove 222, a central wheel 23, a wheel connecting flange 24, a bearing 25, a brake 3 and a friction disc 31.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The core of the utility model is to provide a wheel limit drive arrangement, shortened axial dimensions, reduced wheel limit drive arrangement's quality and overall dimension, be favorable to the overall arrangement under the car.
Furthermore, the utility model also provides an electric motor car including wheel limit drive arrangement.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a wheel-side driving device according to an embodiment of the present invention.
The utility model provides a wheel driving device, including motor 1, speed reducer 2 and stopper 3, motor 1 includes motor casing 11 and motor shaft 12 that sets up in motor casing 11, and friction disc 31 cover of stopper 3 is located motor shaft 12; the speed reducer 2 comprises a speed reducer shell 21, a central wheel 23 sleeved on the motor rotating shaft 12, a wheel connecting flange 24 used for being connected with a wheel and a sealing end cover 22 connected with the end part of the motor shell 11, wherein the wheel connecting flange 24, the sealing end cover 22 and the central wheel 23 are all connected with the speed reducer shell 21, and a bearing 25 is arranged between the sealing end cover 22 and the motor rotating shaft 12; the retarder 2 or the motor housing 11 is provided with a frame connection flange 221 for connection to a frame.
Since the input end and the output end of the speed reducer 2 are coaxially arranged, the speed reducer 2 is a planetary gear speed reducer, and preferably, the speed reducer 2 is a two-stage planetary gear speed reducer considering the output power of the motor 1 and the rotating speed of the wheels.
Referring to fig. 1, the end cover 22 is connected to an end of the motor housing 11 close to the speed reducer 2 to sealingly support an end of the motor 1 close to the speed reducer 2, so that the end of the motor 1 close to the speed reducer 2 does not need to be provided with a motor end cover, the axial size of the wheel-side driving device is reduced, the number of parts of the wheel-side driving device is reduced, and the overall quality and overall size are reduced.
The end cap 22 may be in a horn shape as shown in fig. 1, and may be configured in a cylindrical shape or other geometric shapes, and the specific shape of the end cap 22 is designed and determined according to the actual production requirements, and is not described herein again.
In order to facilitate the rotation of the motor shaft 12 relative to the end cap 22, a bearing 25 is disposed between the end cap 22 and the motor shaft 12, and the type and number of the bearing 25 are determined according to the needs in actual production by referring to the prior art, and are not described herein again.
In order to improve the reliability of the operation of the motor 1, it is preferable that the inner wall surface of the end cover 22 close to the motor winding end surface of the motor 1 is provided with a groove 222 for increasing the creepage distance. The groove 222 increases the creepage distance between the motor winding and the end cover 22, and is not easy to cause insulation breakdown or insulation flashover, thereby effectively ensuring the safety and reliability of the operation of the motor 1.
The frame connecting flange 221 connects the wheel-side driving device and the frame, and is used for fixing the wheel-side driving device on the frame. The size and number of bolt holes on the frame connecting flange 221 are determined according to the requirement of the connection strength required in actual production, and are not described in detail herein.
The frame connecting flange 221 may be provided on the motor housing 11, the reducer housing 21, or the end cap 22 as shown in fig. 1. In consideration of the distance between the frame and the wheel, and the wheel attachment flange 24 is provided on the reducer case 21, it is preferable that the frame attachment flange 221 is provided on the outer wall surface of the end cover 22.
The brake 3 is used for braking the motor 1 and further braking wheels driven by the wheel-side driving device. Preferably, the brake 3 comprises a spring-loaded electromagnetic power-off brake, and has good braking performance and holding performance, so that the parking safety can be fully guaranteed.
Preferably, the brake 3 is connected to an end of the motor 1 remote from the decelerator 2 to simplify the structure of the wheel-side driving apparatus.
Of course, the brake 3 may be disposed between the motor 1 and the decelerator 2.
The center wheel 23 and the friction disc 31 are both sleeved outside the motor rotating shaft 12, and in order to enhance the connection strength, the center wheel 23, the motor rotating shaft 12, the friction disc 31 and the motor rotating shaft 12 can be all in key connection. In view of the connection strength, it is preferable to use a spline connection, which is superior to a flat key connection.
In the embodiment, the wheel is connected with the speed reducer 2 through the wheel connecting flange plate 24, the flange surface is used for outputting power, transmission structures such as a rotating shaft and a coupling do not need to be added, the axial size of the wheel edge driving device is shortened, and the structure of the wheel edge driving device is simplified; the sealing end cover 22 of the speed reducer 2 is used as an end cover support at one side of the motor 1, so that on one hand, the axial size is shortened, on the other hand, the number of parts of a wheel edge driving device is reduced, and the quality and the overall size of the whole machine are reduced; the center wheel 23 of the speed reducer 2 and the friction disc 31 of the brake 3 are sleeved on the motor rotating shaft 12, so that transmission structures such as a coupler are eliminated, the structure is further simplified, the axial size is reduced, and the arrangement under the vehicle is facilitated.
Preferably, the end of the motor housing 11 is provided with a positioning boss 111, the positioning boss 111 is provided with a bolt connecting hole, and the sealing end cap 22 is connected with the positioning boss 111 by a bolt.
The positioning bosses 111 may be circular-arc-shaped bosses uniformly distributed on the circumferential surface of the motor housing 11, or may be annular bosses provided around the circumferential surface of the motor housing 11.
The bolt connecting holes are uniformly distributed in the circumferential direction of the motor shell 11 so as to ensure the connecting strength of each direction of the motor shell 11; the number and size of the bolt connecting holes on the positioning boss 111 are calculated according to the connection strength design required by actual production, and are not described in detail herein.
During assembly, the end face of the sealing end cover 22 abuts against the end face of the positioning boss 111, and after the bolt connecting hole of the positioning boss 111 is aligned with the bolt on the sealing end cover 22 for installation, the positioning boss 111 and the sealing end cover 22 are connected through a fastening screw.
Preferably, the positioning bosses 111 are provided around the circumferential surface of the motor housing 11, which facilitates the processing and manufacturing of the motor housing 11.
Except the above-mentioned wheel limit drive arrangement, the utility model discloses still provide an electric motor car including the wheel limit drive arrangement that above-mentioned embodiment is disclosed, this electric motor car includes automobile body, wheel and is used for driving the drive arrangement of wheel, and drive arrangement is the wheel limit drive arrangement that above-mentioned embodiment is disclosed, and the other each partial structure of this electric motor car please refer to prior art, and this text is no longer repeated.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
It is right above the utility model provides an electric motor car and wheel limit drive arrangement thereof have carried out detailed introduction. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (8)
1. The wheel rim driving device is characterized by comprising a motor (1), a speed reducer (2) and a brake (3), wherein the motor (1) comprises a motor shell (11) and a motor rotating shaft (12) arranged in the motor shell (11), and a friction disc (31) of the brake (3) is sleeved on the motor rotating shaft (12);
the speed reducer (2) comprises a speed reducer shell (21), a center wheel (23) sleeved on the motor rotating shaft (12), a wheel connecting flange (24) used for being connected with wheels and a sealing end cover (22) connected with the end part of the motor shell (11), wherein the wheel connecting flange (24), the sealing end cover (22) and the center wheel (23) are all connected with the speed reducer shell (21), and a bearing (25) is arranged between the sealing end cover (22) and the motor rotating shaft (12);
the speed reducer (2) or the motor shell (11) is provided with a frame connecting flange (221) used for being connected with a frame.
2. The wheel-rim driving device according to claim 1, wherein a positioning boss (111) is provided at an end of the motor housing (11), the positioning boss (111) is provided with a bolt coupling hole, and the end cover (22) is bolt-coupled to the positioning boss (111).
3. A rim drive according to claim 2, wherein the positioning boss (111) is provided around a circumferential surface of the motor housing (11).
4. The wheel-rim driving device according to claim 1, wherein the inner wall surface of the end cover (22) close to the motor winding end surface of the motor (1) is provided with a groove (222) for increasing creepage distance.
5. A wheel-rim drive according to any of claims 1-4, characterized in that the frame attachment flange (221) is arranged on the outer wall surface of the end closure (22).
6. A wheel-side drive according to any of claims 1-4, characterized in that the brake (3) comprises a spring-loaded electromagnetic electric-loss brake.
7. A wheel-side drive according to claim 6, characterized in that the brake (3) is connected to the end of the motor (1) remote from the retarder (2).
8. An electric vehicle comprising a vehicle body, a wheel, and a drive device for driving the wheel, characterized in that the drive device is the wheel-side drive device according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121614746.3U CN213948123U (en) | 2021-07-16 | 2021-07-16 | Electric vehicle and wheel-side driving device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121614746.3U CN213948123U (en) | 2021-07-16 | 2021-07-16 | Electric vehicle and wheel-side driving device thereof |
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| Publication Number | Publication Date |
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| CN213948123U true CN213948123U (en) | 2021-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121614746.3U Active CN213948123U (en) | 2021-07-16 | 2021-07-16 | Electric vehicle and wheel-side driving device thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114261276A (en) * | 2022-01-11 | 2022-04-01 | 华翼动力科技(东莞)有限公司 | Electric hub |
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2021
- 2021-07-16 CN CN202121614746.3U patent/CN213948123U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114261276A (en) * | 2022-01-11 | 2022-04-01 | 华翼动力科技(东莞)有限公司 | Electric hub |
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