CN210941317U - Anti-abrasion rear axle assembly of driving motor - Google Patents
Anti-abrasion rear axle assembly of driving motor Download PDFInfo
- Publication number
- CN210941317U CN210941317U CN201921873960.3U CN201921873960U CN210941317U CN 210941317 U CN210941317 U CN 210941317U CN 201921873960 U CN201921873960 U CN 201921873960U CN 210941317 U CN210941317 U CN 210941317U
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- Prior art keywords
- rear axle
- driving motor
- motor
- fixing
- axle assembly
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Abstract
The utility model relates to a wear-resistant drive motor rear axle assembly, which comprises a drive motor and a rear axle; two ends of the driving motor are fixed on the rear axle; one end of the driving motor is provided with a motor shaft; the inner wall of the motor shaft is provided with a spline sleeve and a groove; the spline housing and the motor shaft are integrally formed at one time; a sealing ring is assembled in the groove; the middle of the rear axle is connected with a connecting disc; a differential is arranged in the connecting disc; the differential is internally provided with an axle arm; spline teeth are arranged at one end of the shaft arm; the spline teeth are matched with the spline sleeve; and the spline teeth of the sealing ring and the shaft arm form interference fit. Its advantages are: the phenomenon of gap, the leakage appears in the connection pad of prevention driving motor and rear axle, reduces the wearing and tearing of spline, extension driving motor life.
Description
Technical Field
The utility model belongs to the technical field of the driving motor rear axle assembly technique and specifically relates to a driving motor rear axle assembly who prevents wearing and tearing.
Background
With the continuous development of social economy, people's standard of living is constantly improved, science and technology is also constantly developed and advanced, the tools of riding instead of walk that people went on a journey now are all the car mostly, however, with the continuous increase of car, the pollution of air is also constantly deepened, automobile exhaust is very big to the pollution of air, in order to administer air pollution, reduce the harm of air pollution to people's health, new forms of energy electric automobile is produced at the end of a journey, new forms of energy electric automobile has practices thrift environmental protection, characteristics such as with low costs and emission are low, use new forms of energy electric automobile can very big alleviate and relieve the pollution of air, alleviate the harm of air pollution to people, therefore, new forms of energy electric automobile is the trend in the future. The driving motor and the rear axle assembly are main parts of the existing new energy electric automobile, however, in the prior art, the following defects and shortcomings exist between the driving motor and the rear axle:
firstly, the driving motor among the prior art is owing to directly pass through the bolt and the connection pad hookup of rear axle, if the time is of a specified duration, the bolt is not hard up, then can lead to the connection pad of rear axle and driving motor's terminal surface to form the gap, if wade after, the driving motor internal spline has water to get into, the wearing and tearing of motor spline are accelerated.
Secondly, most of the installation modes of the driving motor in the prior art are fixed on the frame, and the installation modes are time-consuming and labor-consuming and require large installation space.
Chinese patent document CN201621335554.8, application date 20161207, with patent names: electric automobile wheel hub motor, braking pincers and rear axle connecting piece disclose an electric automobile wheel hub motor, braking pincers and rear axle connecting piece, and it includes: the automobile rear axle connecting part is provided with a brake caliper mounting hole, one side face of the automobile rear axle connecting part is provided with a flange plate, the other side face of the automobile rear axle connecting part is provided with an annular structure corresponding to the peripheral edge of the flange plate in the circumferential direction, the hub motor and the automobile rear axle connecting part are provided with circular holes communicated with the inner hole of the flange plate, a cavity formed by enclosing of the annular structure is communicated with the inner hole of the flange plate, the hub motor and the automobile rear axle connecting part are communicated with each other, and the hub motor and the automobile rear axle connecting part are provided with assembling holes used for fixing the automobile rear axle in the circumferential direction of the flange plate.
The hub motor, the brake caliper and the rear axle connecting piece of the electric automobile disclosed in the patent document have the advantages of compact structure and high strength, and the number of parts and the occupied space are saved. However, a technical solution that avoids water inflow, prevents abrasion, and facilitates quick installation and disassembly is not disclosed.
In view of the above, there is a need for a rear axle assembly of a driving motor that avoids water ingress, prevents wear, and is easy to install and remove quickly. No report is found about the rear axle assembly of the driving motor at present.
Disclosure of Invention
The utility model aims at providing an avoid into water, prevent wearing and tearing, and be convenient for install fast and the driving motor rear axle assembly of dismantling.
In order to achieve the purpose, the utility model adopts the technical proposal that:
a rear axle assembly of a driving motor for preventing abrasion comprises a driving motor and a rear axle; two ends of the driving motor are fixed on the rear axle; one end of the driving motor is provided with a motor shaft; the inner wall of the motor shaft is provided with a spline sleeve and a groove; the spline housing and the motor shaft are integrally formed at one time; a sealing ring is assembled in the groove; the middle of the rear axle is connected with a connecting disc; a differential is arranged in the connecting disc; the differential is internally provided with an axle arm; spline teeth are arranged at one end of the shaft arm; the spline teeth are matched with the spline sleeve; and the spline teeth of the sealing ring and the shaft arm form interference fit.
As a preferred technical scheme, a transition section is arranged between the groove and the spline housing.
As a preferred technical scheme, the sealing ring is an O-shaped ring.
As a preferred technical scheme, the length of the spline sleeve is larger than that of the spline teeth.
As a preferred technical scheme, the rear axle assembly of the driving motor is also provided with a support frame; the support frame comprises a rear axle support plate and a motor fixing plate; the motor fixing plate is installed and fixed on the rear axle supporting plate.
As a preferred technical solution, the rear axle supporting and fixing plate includes a first supporting plate, a second supporting plate and a top fixing plate; the first supporting plate and the second supporting plate are provided with arc-shaped openings; the motor fixing plate comprises a connecting part, a first fixing part and a second fixing part; the connecting part is fixed with the top surface fixing plate; the second fixing part is arranged on the side of the first fixing part and forms a abdicating step, and the first fixing part and the second fixing part are both positioned on the same plane; the connecting part is arranged at the lower edge of the first fixing part, and the plane of the connecting part is vertical to the plane of the first fixing part.
As a preferable technical solution, the first supporting plate, the top fixing plate and the second supporting plate are sequentially enclosed to form a door shape.
As a preferable technical solution, the first fixing portion, the second fixing portion and the connecting portion are integrally formed at one time; and reinforcing ribs are arranged at the joint of the first fixing part and the connecting part.
As a preferable technical scheme, the connecting part is provided with a long round hole.
As a preferable technical scheme, the planes of the first supporting plate and the second supporting plate are both trapezoidal.
The utility model has the advantages that:
1. the utility model discloses a driving motor rear axle assembly of preventing wearing and tearing. The inner wall of motor shaft is equipped with the recess, be equipped with the sealing washer in the recess, the spline tooth of sealing washer and shaft arm between form interference fit. The phenomenon of gap, the leakage appears in the connection pad of prevention driving motor and rear axle, reduces the wearing and tearing of spline, extension driving motor life.
2. The driving motor rear axle assembly is also provided with a support frame; the support frame comprises a rear axle support plate and a motor fixing plate; the motor fixing plate is installed and fixed on the rear axle supporting plate. Under the use state, the support frame establishes fixed connection with the rear axle through the rear axle backup pad, establishes fixed connection with driving motor through the motor fixed plate to the realization is with driving motor direct mount on the rear axle, is convenient for driving motor's quick installation.
3. A transition section is arranged between the groove and the spline housing. The transition section is convenient to establish connection with steps on the elbow arm of the differential mechanism, and assembly is convenient.
4. Rear axle supporting fixed plate includes first backup pad, second backup pad and top surface fixed plate, and this design establishes the fixed point with the rear axle, and stability is good, and provides the installation fixed area for the motor fixed plate. The first supporting plate and the second supporting plate are provided with arc-shaped openings, and the arc-shaped openings are matched with the peripheral surface of the rear axle body. The support is ensured to keep a vertical state, and the support performance is good.
5. The second fixed part sets up the side at first fixed part and forms the step of stepping down, first fixed part and second fixed part all be located same plane, wherein, the design of the step of stepping down, can stagger each other for installing the outlet box at driving motor tip, both spaces do not influence each other to increased area of contact, fixed effectual with driving motor.
Drawings
Fig. 1 is a schematic structural diagram of a rear axle assembly of a driving motor for preventing abrasion according to the present invention.
Fig. 2 is a schematic structural diagram of a driving motor.
Fig. 3 is a partial cross-sectional schematic view of a drive motor.
Fig. 4 is a schematic diagram of the rear axle connection.
Fig. 5 is a schematic structural view of the connection of the driving motor and the rear axle.
Fig. 6 is a partial structural schematic view of the support frame.
Detailed Description
The invention will be further described with reference to the following examples and with reference to the accompanying drawings.
The reference numerals and components referred to in the drawings are as follows:
1. drive motor 11. Motor shaft
12. Spline housing 13, groove
14. Transition section 2 rear axle
21. Connecting disc 22 shaft arm
23. Spline tooth 3 support frame
31. Rear axle support plate 311 first support plate
312. Second supporting plate 313 top fixing plate
314. Arc-shaped opening 32. motor fixing plate
321. First fixing part 322, second fixing part
323. Connecting part 33, long round hole
4. Outlet box
Referring to fig. 1, fig. 1 is a schematic structural diagram of a rear axle 2 assembly of a driving motor 1 for preventing abrasion according to the present invention. A rear axle 2 assembly of a driving motor 1 for preventing abrasion comprises the driving motor 1 and a rear axle 2; two ends of the driving motor 1 are fixed on the rear axle 2.
Referring to fig. 2 and 3, fig. 2 is a schematic structural diagram of the driving motor 1. Fig. 3 is a partial sectional schematic view of the drive motor 1. One end of the driving motor 1 is provided with a motor shaft 11; the inner wall of the motor shaft 11 is provided with a spline housing 12 and a groove 13; the spline housing 12 and the motor shaft 11 are integrally formed at one time; a transition section 14 is arranged between the groove 13 and the spline housing 12; a sealing ring is assembled in the groove 13.
Referring to fig. 4, fig. 4 is a schematic structural diagram of the connection of the rear axle 2. The middle of the rear axle 2 is connected with a connecting disc 21; a differential is arranged in the connecting disc 21; the differential is provided with an axle arm 22; one end of the shaft arm 22 is provided with spline teeth 23.
Referring to fig. 5 and 6, fig. 5 is a schematic structural diagram of the connection between the driving motor 1 and the rear axle 2. Fig. 6 is a partial structural schematic view of the support frame 3. The rear axle 2 assembly of the driving motor 1 is also provided with a support frame 3; the support frame 3 comprises a rear axle support plate 31 and a motor fixing plate 32; the motor fixing plate 32 is installed and fixed on the rear axle supporting plate 31; the rear axle 2 supporting and fixing plate comprises a first supporting plate 311, a second supporting plate 312 and a top fixing plate 313; the first supporting plate 311, the top fixing plate 313 and the second supporting plate are sequentially enclosed into a door shape; the planes of the first supporting plate 311 and the second supporting plate 312 are both trapezoidal; the first support plate 311 and the second support plate 312 are both provided with an arc-shaped opening 314; the motor fixing plate 32 comprises a connecting part 323, a first fixing part 321 and a second fixing part 322; the connecting part 323 is fixed with the top fixing plate 313; the second fixing portion 322 is disposed at a side of the first fixing portion 321 and forms an abdicating step, and the first fixing portion 321 and the second fixing portion 322 are both located on the same plane; the connecting portion 232 is disposed at the lower edge of the first fixing portion 321, and the plane of the connecting portion 323 is perpendicular to the plane of the first fixing portion 321.
The embodiment needs to be explained as follows:
the two ends of the driving motor 1 are fixed on the rear axle 2, and the driving motor 1 is integrally fixed on the rear axle 2 in the design mode, so that the driving motor is convenient to install and small in occupied space. Most of the traditional installation modes of the driving motor 1 are fixed on the frame, and the installation modes are time-consuming and labor-consuming and require a large installation space.
The inner wall of the motor shaft 11 is provided with a spline housing 12, and one end of the shaft arm 22 is provided with spline teeth 23; the spline teeth 23 are matched with the spline housing 12. The effect of this design is: by adopting the connection between the spline teeth 23 and the spline sleeve 12, the electric drive can be quickly mounted and dismounted, and a large space is provided for the arrangement of the chassis of the whole vehicle.
The inner wall of the motor shaft 11 is provided with a groove 13, a sealing ring is assembled in the groove 13, and interference fit is formed between the sealing ring and the spline teeth 23 of the shaft arm 22. The effect of this design is: the phenomenon that the gap and water leakage occur between the driving motor 1 and the connecting disc 21 of the rear axle 2 is prevented, the abrasion of the spline is reduced, and the service life of the driving motor 1 is prolonged.
A transition section 14 is arranged between the groove 13 and the spline housing 12. The transition section 14 facilitates connection with a step on the elbow arm of the differential and assembly.
The sealing ring is an O-shaped ring. The design of the O-shaped ring does not affect the arrangement of the shaft arm 22 and can effectively play a role in water prevention.
The length of the spline housing 12 is greater than that of the spline teeth 23. The design mode ensures that the two have sufficient meshing length, the meshing is sufficient, and the power transmission effect is good.
The rear axle 2 assembly of the driving motor 1 is also provided with a support frame 3; the support frame 3 comprises a rear axle support plate 31 and a motor fixing plate 32; the motor fixing plate 32 is mounted and fixed on the rear axle supporting plate 31. In a use state, the support frame 3 is fixedly connected with the rear axle 2 through the rear axle support plate 31, and is fixedly connected with the driving motor 1 through the motor fixing plate 32, so that the driving motor 1 is directly mounted on the rear axle 2, and the driving motor 1 is convenient to mount quickly.
The rear axle 2 support fixing plate comprises a first support plate 311, a second support plate 312 and a top fixing plate 313, and the design mode establishes a fixing point with the rear axle 2, so that the stability is good, and an installation fixing area is provided for the motor fixing plate 32. The first support plate 311 and the second support plate 312 are both provided with an arc-shaped opening 314, and the arc-shaped opening 314 is designed to be matched with the outer peripheral surface of the rear axle 2 body. The support is ensured to keep a vertical state, and the support performance is good.
Second fixed part 322 set up the side at first fixed part 321 and form the step of stepping down, first fixed part 321 and second fixed part 322 all be located same plane, wherein, the design of the step of stepping down, for installing outlet box 4 at driving motor 1 tip can stagger each other, both spaces do not influence each other to increased area of contact, fixed effectual with driving motor 1.
The connecting portion 323 is disposed at a lower edge of the first fixing portion 321, and a plane of the connecting portion 323 is perpendicular to a plane of the first fixing portion 321. This design for support frame 3 is not on same plane with driving motor 1's fixed point and rear axle 2's fixed point, does not influence each other, and fixed effectual, antitorque characteristic are good.
The first fixing part 321, the second fixing part 322 and the connecting part 323 are integrally formed at one time; a reinforcing rib is arranged at the joint of the first fixing part 321 and the connecting part 323. The design of the reinforcing ribs ensures that the strength performance is good. Avoid the stress concentration and the fracture.
The connecting part 323 is provided with an oblong hole 33. The design of the oblong hole 33 has a certain movement margin when the fixing bolt needs to be installed, so that the installation and the disassembly are quick and convenient.
The first supporting plate 311 and the second supporting plate 312 are in a trapezoidal shape. The ladder-shaped design has good stability and simple process and manufacture.
The utility model discloses a 2 assemblies of 1 rear axle of driving motor of anti-abrasion. The inner wall of the motor shaft 11 is provided with a groove 13, a sealing ring is assembled in the groove 13, and interference fit is formed between the sealing ring and the spline teeth 23 of the shaft arm 22. The phenomenon that the gap and water leakage occur between the driving motor 1 and the connecting disc 21 of the rear axle 2 is prevented, the abrasion of the spline is reduced, and the service life of the driving motor 1 is prolonged.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and additions can be made without departing from the principles of the present invention, and these improvements and additions should also be regarded as the protection scope of the present invention.
Claims (10)
1. The rear axle assembly of the driving motor is characterized by comprising the driving motor and a rear axle; two ends of the driving motor are fixed on the rear axle; one end of the driving motor is provided with a motor shaft; the inner wall of the motor shaft is provided with a spline sleeve and a groove; the spline housing and the motor shaft are integrally formed at one time; a sealing ring is assembled in the groove; the middle of the rear axle is connected with a connecting disc; a differential is arranged in the connecting disc; the differential is internally provided with an axle arm; spline teeth are arranged at one end of the shaft arm; the spline teeth are matched with the spline sleeve; and the spline teeth of the sealing ring and the shaft arm form interference fit.
2. The rear axle assembly of driving motor as claimed in claim 1, wherein a transition section is provided between the groove and the spline housing.
3. The drive motor rear axle assembly of claim 1, wherein the seal ring is an O-ring.
4. The drive motor rear axle assembly of claim 3, wherein the length of the spline housing is greater than the length of the spline teeth.
5. The rear axle assembly of the driving motor as claimed in claim 1, wherein the rear axle assembly of the driving motor is further provided with a supporting frame; the support frame comprises a rear axle support plate and a motor fixing plate; the motor fixing plate is installed and fixed on the rear axle supporting plate.
6. The rear axle assembly of claim 5, wherein the rear axle support fixing plate comprises a first support plate, a second support plate and a top surface fixing plate; the first supporting plate and the second supporting plate are provided with arc-shaped openings; the motor fixing plate comprises a connecting part, a first fixing part and a second fixing part; the connecting part is fixed with the top surface fixing plate; the second fixing part is arranged on the side of the first fixing part and forms a abdicating step, and the first fixing part and the second fixing part are both positioned on the same plane; the connecting part is arranged at the lower edge of the first fixing part, and the plane of the connecting part is vertical to the plane of the first fixing part.
7. The rear axle assembly of claim 6, wherein the first support plate, the top fixing plate and the second support plate are sequentially formed in a shape of a Chinese character 'men'.
8. The rear axle assembly of claim 6, wherein the first fixing portion, the second fixing portion and the connecting portion are integrally formed at one time; and reinforcing ribs are arranged at the joint of the first fixing part and the connecting part.
9. The rear axle assembly of the driving motor as claimed in claim 6, wherein the connecting portion is provided with an oblong hole.
10. The rear axle assembly of claim 6, wherein the first support plate and the second support plate are trapezoidal in plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921873960.3U CN210941317U (en) | 2019-10-31 | 2019-10-31 | Anti-abrasion rear axle assembly of driving motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921873960.3U CN210941317U (en) | 2019-10-31 | 2019-10-31 | Anti-abrasion rear axle assembly of driving motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210941317U true CN210941317U (en) | 2020-07-07 |
Family
ID=71399339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921873960.3U Expired - Fee Related CN210941317U (en) | 2019-10-31 | 2019-10-31 | Anti-abrasion rear axle assembly of driving motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210941317U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110641267A (en) * | 2019-10-31 | 2020-01-03 | 华晨鑫源重庆汽车有限公司 | Anti-abrasion rear axle assembly of driving motor |
-
2019
- 2019-10-31 CN CN201921873960.3U patent/CN210941317U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110641267A (en) * | 2019-10-31 | 2020-01-03 | 华晨鑫源重庆汽车有限公司 | Anti-abrasion rear axle assembly of driving motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200707 Termination date: 20211031 |