CN215553908U

CN215553908U - Driving system for electric vehicle

Info

Publication number: CN215553908U
Application number: CN202121960488.4U
Authority: CN
Inventors: 王丽荣
Original assignee: Taizhou Zhilong Technology Co ltd
Current assignee: Taizhou Zhilong Technology Co ltd
Priority date: 2021-08-19
Filing date: 2021-08-19
Publication date: 2022-01-18
Anticipated expiration: 2031-08-19

Abstract

The utility model provides a driving system for an electric vehicle, and belongs to the technical field of electric vehicles. The motor shaft of the electric vehicle solves the problems that a motor shaft of an existing electric vehicle is inconvenient to assemble, poor in stability and easy to axially float. This actuating system that electric motor car was used, the single swing side arm that has built-in motor including the outer end, be provided with transmission between wheel hub and the motor, the pivot that has the coaxial direction setting on wheel hub has, the drive shaft has on the motor, this drive shaft and pivot parallel distribution and this have parallel arrangement's transmission shaft between the two, the drive shaft, transmission shaft and pivot three speed reduction, the drive shaft is including the relative axis body one and the axis body two that assemble of being the axial, be provided with the spacing assembly structure that prevents the relative drunkenness of both axial of axis body one and axis body two between axis body one and the axis body two. The utility model has the advantages of reasonable and simple structural design, convenient axial assembly, high stability of the axial assembly structure, difficult noise generation and long service life.

Description

Driving system for electric vehicle

Technical Field

The utility model belongs to the technical field of electric vehicles, and relates to a driving system for an electric vehicle.

Background

The rear bottom fork is one of main components for fixing a rear motor wheel and a motor, and is indispensable.

For example, Chinese patent numbers are: the "201921153409.1" authorization notice number is: CN210455094U the single rocker arm chain stay assembly, its concrete structure includes the side arm, and side arm one end shaping has the motor casing that is used for installing motor element, and the shaping of side arm other end has the installation cavity, and the installation cavity activity is provided with the main shaft that is used for connecting wheel hub, and main shaft one end is provided with from the driving wheel, sets up transmission between motor casing and the driven wheel.

In the structure, the main shaft is long and inconvenient to assemble; the stability of main shaft after the assembly is relatively poor, when using, takes place axial float easily, produces the noise easily during the roll, influences the life of motor.

Disclosure of Invention

The utility model aims to solve the problems in the prior art and provides a driving system for an electric vehicle, which has the advantages of simple structure, convenience in assembly, high structural stability, difficulty in axial movement and long service life.

The purpose of the utility model can be realized by the following technical scheme: a driving system for an electric vehicle comprises a single-rocking-side arm, wherein the outer end of the single-rocking-side arm is provided with a built-in motor, a wheel hub is arranged on the single-rocking-side arm, a transmission device is arranged between the wheel hub and the motor, it is characterized in that the transmission device comprises a hub provided with a rotating shaft arranged in the same axial direction, the motor is provided with a driving shaft, the driving shaft and the rotating shaft are distributed in parallel, a transmission shaft arranged in parallel is arranged between the driving shaft and the rotating shaft, the transmission shaft is meshed with the driving shaft through a first gear arranged on the transmission shaft, the rotating shaft is meshed with the transmission shaft through a second gear arranged on the rotating shaft to cause the speed reduction transmission of the driving shaft, the transmission shaft and the rotating shaft, the driving shaft comprises a first shaft body and a second shaft body which are axially assembled relatively, and a limiting assembly structure for preventing the first shaft body and the second shaft body from axially moving relatively is arranged between the first shaft body and the second shaft body.

This actuating system for electric motor car mainly falls into axis body one, axis body two with the drive shaft, and the relative assembly of axial is again made to two components of axis body one, axis body two, and production convenient assembling sets up spacing assembly structure between axis body one, axis body two, causes axis body one, two axial assemblies of axis body stable through spacing assembly structure, the difficult condition that takes place the axial float, and structural stability is high, long service life.

In foretell actuating system for electric motor car, the axis body I set up in the motor and the both ends of this axis body I all through bearing and motor normal running fit, the terminal surface of the outer end of this axis body I has the internal spline groove, axis body two rotate be provided with on the single rocking side arm, the one end of this axis body two has external splines grafting portion, the internal spline groove axial of the external splines grafting portion of this axis body two and the outer end of axis body I relative butt joint in passing through the motor. The purpose that sets up like this makes axis body one, the relative butt joint structural stability of axis body two axial, and relative circumferential direction displacement is difficult for taking place for this axis body one, axis body two.

In the above-mentioned actuating system for electric motor car, spacing assembly structure include the wheel hub connecting seat, the wheel hub connecting seat can dismantle and link firmly in the single rocking side arm on, the wheel hub connecting seat on be provided with external inserting groove, external inserting groove in be provided with the first bearing, the other end of axis body two wear to locate and be used for the axial spacing to lean on in the first bearing in the external inserting groove of wheel hub connecting seat. The purpose that sets up like this makes the axis body two assemble stably in the wheel hub connecting seat, and difficult emergence axial float displacement, structural stability is high.

In the driving system for the electric vehicle, the single rocking side arm is provided with a first assembling seat, the first assembling seat is provided with a second bearing, and the shaft body two is assembled in the second bearing in the same axial direction and is in running fit with the single rocking side arm through the second bearing. The purpose of the arrangement is to ensure that the friction force of the assembly of the second shaft body and the single-rocking-side arm is small, and the rotating fit structure of the second shaft body on the single-rocking-side arm is stable.

In the above driving system for an electric vehicle, a second shaft body between the first bearing and the second bearing is provided with engaging teeth, and the second shaft body is in engagement transmission with the first gear on the transmission shaft through the provided engaging teeth. Through meshing tooth and first gear engagement transmission stable in structure, the noise is little, long service life.

In the above-mentioned actuating system for electric vehicle, the single side arm of shaking on be provided with first transmission installation position, the wheel hub connecting seat on be provided with second transmission installation position, first transmission installation position and second transmission installation position relative distribution and be provided with first drive bearing in this first transmission installation position, be provided with second drive bearing in this second transmission installation position, the transmission shaft assemble between single side arm of shaking, wheel hub connecting seat, the one end of this transmission shaft is pegged graft in first drive bearing, the other end of this transmission shaft is pegged graft in second drive bearing, the transmission shaft on be provided with the meshing tooth, the transmission shaft mesh the transmission through the second gear meshing transmission on meshing tooth and the pivot that sets up. The purpose that sets up like this makes transmission shaft assembly structure stable, as middle driving medium, and the transmission is steady, long service life.

In the above-mentioned driving system for the electric vehicle, the hub connecting seat on be provided with the second assembly seat, the second assembly seat on be provided with first rotating bearing, the same axial assembly of pivot in first rotating bearing and through first rotating bearing and hub connecting seat normal running fit. The friction of pivot and wheel hub connecting seat assembly is little, and the pivot normal running fit stable in structure on the wheel hub connecting seat.

In the above-mentioned actuating system for electric vehicle, the single rocking side arm on be provided with built-in inserting groove, built-in inserting groove in be provided with second rolling bearing, the one end of pivot wear to locate and be used for the spacing support of axial in the second rolling bearing in the built-in inserting groove of single rocking side arm to lean on, the other end of pivot and wheel hub same axial link firmly. The rotating shaft assembly structure is stable, axial movement displacement is not easy to occur, and the service life is long.

Compared with the prior art, this actuating system that electric motor car was used's advantage does: the structure design is reasonable and simple, the driving shaft is separately and independently manufactured, and then is in axial butt joint, so that the axial assembly is convenient, the stability of the axial assembly structure is high, the noise is not easy to generate, and the service life is long.

Drawings

Fig. 1 is a schematic perspective view of a cross section of a drive system for an electric vehicle according to the present invention.

Fig. 2 is an enlarged schematic view of a portion a in fig. 1.

In the figure, 1, a motor; 2. single rocking side arm; 3. a hub; 4. a rotating shaft; 5. a drive shaft; 6. a first gear; 7. a second gear; 8. a first shaft body; 9. a second shaft body; 10. an external spline insertion part; 11. a hub connection seat; 12. a first bearing; 13. a second bearing; 14. a first drive bearing; 15. a second drive bearing; 16. a first rotating bearing; 17. a second rotational bearing.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1 and 2, the driving system for the electric vehicle mainly comprises a single swing side arm 2 with a built-in motor 1 at the outer end, a wheel hub 3 is arranged on the single swing side arm 2, and a transmission device is arranged between the wheel hub 3 and the motor 1, and during actual manufacturing, the specific implementation mode of the transmission device is as follows: hub 3 is last to have pivot 4 with the axial setting, the last drive shaft that has of motor 1, this drive shaft and 4 parallel distribution of pivot and this between the two have parallel arrangement's transmission shaft 5, transmission shaft 5 is through setting up first gear 6 and the drive shaft meshing on transmission shaft 5, pivot 4 causes the drive shaft through setting up second gear 7 and the meshing of transmission shaft 5 on pivot 4, transmission shaft 5 and 4 three speed reduction of pivot, when actual manufacturing, this drive shaft mainly comprises axis body one 8 and the axis body two 9 that are the relative assembly of axial, axis body one 8 sets up in motor 1 and the both ends of this axis body one 8 all through bearing and motor 1 normal running fit, the terminal surface of the outer end of this axis body one 8 has the internal spline groove, axis body two 9 rotates and is provided with on single shake 2 side arms, the one end of this axis body two 9 has external spline grafting portion 10, the external spline grafting portion 10 of this axis body two 9 penetrates in motor 1 and butt joint with the internal spline groove axial of the outer end of axis body one 8 relatively.

During actual manufacturing, a limiting assembly structure for preventing the first shaft body 8 and the second shaft body 9 from axially moving relatively is arranged between the first shaft body 8 and the second shaft body 9; the specific implementation mode of the limiting assembly structure is as follows: the wheel hub connecting seat is mainly composed of a wheel hub connecting seat 11, the wheel hub connecting seat 11 is detachably and fixedly connected to the single swing side arm 2, an external insertion groove is formed in the wheel hub connecting seat 11, a first bearing 12 is arranged in the external insertion groove, and the other end of the shaft body II 9 penetrates through the first bearing 12 in the external insertion groove of the wheel hub connecting seat 11 and is used for axial limiting and abutting; the single rocking side arm 2 is provided with a first assembling seat, the first assembling seat is provided with a second bearing 13, a second shaft body 9 is axially assembled in the second bearing 13 in the same direction and is in running fit with the single rocking side arm 2 through the second bearing 13, a second shaft body 9 between the first bearing 12 and the second bearing 13 is provided with meshing teeth, and the second shaft body 9 is in meshing transmission with a first gear 6 on the transmission shaft 5 through the meshing teeth.

During actual manufacturing, a first transmission mounting position is arranged on the single-swing side arm 2, a second transmission mounting position is arranged on the hub connecting seat 11, the first transmission mounting position and the second transmission mounting position are distributed oppositely, a first transmission bearing 14 is arranged in the first transmission mounting position, a second transmission bearing 15 is arranged in the second transmission mounting position, the transmission shaft 5 is assembled between the single-swing side arm 2 and the hub connecting seat 11, one end of the transmission shaft 5 is inserted into the first transmission bearing 14, the other end of the transmission shaft 5 is inserted into the second transmission bearing 15, meshing teeth are arranged on the transmission shaft 5, and the transmission shaft 5 is in meshing transmission with a second gear 7 on the rotating shaft 4 through the arranged meshing teeth; the hub connecting seat 11 is provided with a second assembling seat, the second assembling seat is provided with a first rotating bearing 16, and the rotating shaft 4 is axially assembled in the first rotating bearing 16 and is in rotating fit with the hub connecting seat 11 through the first rotating bearing 16; be provided with built-in inserting groove on this list shakes side arm 2, be provided with second rolling bearing 17 in the built-in inserting groove, the one end of pivot 4 is worn to locate and is used for the spacing support of axial to lean on in the second rolling bearing 17 that is in the built-in inserting groove of list shakes side arm 2, and the other end and the same axial of wheel hub 3 of pivot 4 link firmly.

Those not described in detail in this specification are within the skill of the art. The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Claims

1. A driving system for an electric vehicle comprises a single-swing side arm (2) with a built-in motor (1) at the outer end, wherein a hub (3) is arranged on the single-swing side arm (2), a transmission device is arranged between the hub (3) and the motor (1), and the driving system is characterized in that the transmission device comprises a rotating shaft (4) coaxially arranged on the hub (3), a driving shaft is arranged on the motor (1), the driving shaft and the rotating shaft (4) are distributed in parallel, a transmission shaft (5) arranged in parallel is arranged between the driving shaft and the rotating shaft, the transmission shaft (5) is meshed with the driving shaft through a first gear (6) arranged on the transmission shaft (5), the rotating shaft (4) is meshed with the transmission shaft (5) through a second gear (7) arranged on the rotating shaft (4) to enable the driving shaft, the transmission shaft (5) and the rotating shaft (4) to perform speed reduction transmission, the driving shaft comprises a first shaft body (8) and a second shaft body (9) which are axially assembled relatively, and a limiting assembly structure for preventing the first shaft body (8) and the second shaft body (9) from axially moving relatively is arranged between the first shaft body (8) and the second shaft body (9).

2. The driving system for the electric vehicle according to claim 1, wherein the first shaft body (8) is disposed in the motor (1), two ends of the first shaft body (8) are rotatably matched with the motor (1) through bearings, an inner spline groove is formed in an end surface of an outer end of the first shaft body (8), the second shaft body (9) is rotatably disposed on the single rocking side arm (2), an outer spline insertion portion (10) is formed at one end of the second shaft body (9), and the outer spline insertion portion (10) of the second shaft body (9) penetrates into the motor (1) to axially butt against the inner spline groove of the outer end of the first shaft body (8).

3. The driving system for the electric vehicle according to claim 2, wherein the limiting assembly structure comprises a hub connecting seat (11), the hub connecting seat (11) is detachably and fixedly connected to the single swing side arm (2), an external insertion groove is formed in the hub connecting seat (11), a first bearing (12) is arranged in the external insertion groove, and the other end of the shaft body (9) penetrates through the first bearing (12) in the external insertion groove of the hub connecting seat (11) and is used for axial limiting and abutting.

4. The driving system for the electric vehicle according to claim 3, wherein the single swing side arm (2) is provided with a first assembling seat, the first assembling seat is provided with a second bearing (13), and the second shaft body (9) is axially assembled in the second bearing (13) and is rotatably matched with the single swing side arm (2) through the second bearing (13).

5. The driving system for the electric vehicle according to claim 4, wherein a second shaft body (9) between the first bearing (12) and the second bearing (13) is provided with meshing teeth, and the second shaft body (9) is in meshing transmission with the first gear (6) on the transmission shaft (5) through the provided meshing teeth.

6. The drive system for an electric vehicle according to claim 5, wherein the single swing side arm (2) is provided with a first transmission mounting position, a second transmission installation position is arranged on the hub connecting seat (11), the first transmission installation position and the second transmission installation position are distributed oppositely, a first transmission bearing (14) is arranged in the first transmission installation position, a second transmission bearing (15) is arranged in the second transmission mounting position, the transmission shaft (5) is assembled between the single swing side arm (2) and the hub connecting seat (11), one end of the transmission shaft (5) is inserted in the first transmission bearing (14), the other end of the transmission shaft (5) is inserted in the second transmission bearing (15), the transmission shaft (5) is provided with meshing teeth, and the transmission shaft (5) is in meshing transmission with the second gear (7) on the rotating shaft (4) through the arranged meshing teeth.

7. The driving system for an electric vehicle according to claim 6, wherein the hub connecting seat (11) is provided with a second mounting seat, the second mounting seat is provided with a first rotating bearing (16), and the rotating shaft (4) is axially mounted in the first rotating bearing (16) and is rotatably matched with the hub connecting seat (11) through the first rotating bearing (16).

8. The driving system for the electric vehicle according to claim 6, wherein the single swing side arm (2) is provided with a built-in insertion groove, a second rotating bearing (17) is arranged in the built-in insertion groove, one end of the rotating shaft (4) penetrates through the second rotating bearing (17) in the built-in insertion groove of the single swing side arm (2) for axial limiting and abutting, and the other end of the rotating shaft (4) is fixedly connected with the hub (3) in the same axial direction.