Multi-gear electric drive axle structure

Abstract

The utility model relates to the technical field of electric drive axles, and particularly discloses a multi-gear electric drive axle structure. Comprising a motor, an input gear assembly, a first output gear assembly, a second output gear assembly, a third output gear assembly, a transmission gear, a first connecting shaft used for connecting the motor with one end of the input gear assembly, and a second connecting shaft used for connecting one end of the first output gear assembly and one end of the second output gear assembly. One end of the third output gear assembly is connected with a second connecting shaft at the other end of the input gear assembly, and the third connecting shaft is used for connecting the other end of the first output gear assembly, the other end of the second output gear assembly, the other end of the third output gear assembly and a transmission gear; the multi-gear electric drive axle further comprises a differential mechanism, a fourth connecting shaft and a fourth output gear assembly connected to the fourth connecting shaft through the differential mechanism, and the problems that according to a traditional multi-gear electric drive axle structure, transmission of each gear is complex, and the arrangement space is affected and increased due to the number of transmission meshing gears and the number of transmission stages are large are solved.

Description

Technical Field

[0001] The present application relates to the technical field of electric drive axles, and specifically discloses a multi-gear electric drive axle structure. Background Art

[0002] The electric drive axle system, also known as the motor-driven axle system, includes a motor, a gear transmission device, a shift device and an output shaft arranged on the axle of the vehicle.

[0003] With the development of electric cars, different types of vehicles use different electric drive axle systems. However, due to the limitations of the inner width of the vehicle frame, airbags and brake chambers, there are strict requirements on the axial space of the electric drive axle of the electric drive axle system installed in the vehicle.

[0004] In the prior art, for a multi-gear electric drive axle structure, the transmission of each gear is complex, and the number of transmission meshing gears and the number of transmission stages are large, which affects and increases the layout space and affects the transmission efficiency.

[0005] Therefore, in view of this, the inventor provides a multi-speed electric drive axle structure to solve the above problems. Utility Model Content

[0006] The utility model aims to solve the problem that the traditional multi-gear electric drive axle structure has a complex transmission for each gear and has a large number of transmission meshing gears and transmission stages, which affects and increases the layout space.

[0007] In order to achieve the above-mentioned purpose, the basic scheme of the utility model provides a multi-gear electric drive axle structure, including a motor, an input gear assembly, a first output gear assembly, a second output gear assembly, a third output gear assembly, a transmission gear, a first connecting shaft for connecting the motor with one end of the input gear assembly, a second connecting shaft for connecting one end of the first output gear assembly, one end of the second output gear assembly, one end of the third output gear assembly and the other end of the input gear assembly, and a third connecting shaft for connecting the other end of the first output gear assembly, the other end of the second output gear assembly, the other end of the third output gear assembly and the transmission gear;

[0008] A first clutch is provided between the first output gear assembly connected to the third connecting shaft and the second output gear assembly, and a second clutch is provided between the input gear assembly connected to the second connecting shaft and the third output gear assembly;

[0009] It also includes a differential, a fourth connecting shaft and a fourth output gear assembly connected to the fourth connecting shaft by the differential. The transmission gear is also meshed with one end of the fourth output gear assembly for transmission. The two ends of the fourth connecting shaft are respectively connected to the first drive wheel and the second drive wheel.

[0010] Further, the input gear assembly includes a first input gear connected to the first connecting shaft and a second input gear connected to the second connecting shaft, and the first input gear is meshed with the second input gear.

[0011] Furthermore, the first output gear assembly includes a first gear driving gear connected to the second connecting shaft and a first gear driven gear connected to the third connecting shaft, and the first gear driving gear is meshed with the first gear driven gear.

[0012] Furthermore, the second output gear assembly includes a second gear driving gear connected to the second connecting shaft and a second gear driven gear connected to the third connecting shaft, and the second gear driving gear is meshed with the second gear driven gear.

[0013] Furthermore, the first clutch is arranged between the first gear driven gear and the second gear driven gear.

[0014] Furthermore, the third output gear assembly includes a third-speed driving gear connected to the second connecting shaft and a third-speed driven gear connected to the third connecting shaft, and the third-speed driving gear is meshed with the third-speed driven gear.

[0015] Furthermore, the second clutch is arranged between the second input gear and the third gear driving gear.

[0016] The principle and effect of this scheme are:

[0017] Compared with the prior art, the utility model integrates the first output gear assembly, the second output gear assembly and the third output gear assembly with the second connecting shaft and the third connecting shaft, and reduces the overall layout space by integrating the gear transmission assembly. At the same time, the first output gear assembly, the second output gear assembly and the third output gear assembly are respectively connected with the second connecting shaft and the third connecting shaft, thereby reducing the number and quantity of gear transmission stages, and solving the problem of the traditional multi-gear electric drive axle structure, in which the transmission of each gear is complex and the layout space is affected and increased due to the large number of transmission meshing gears and the large number of transmission stages. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A schematic diagram of a multi-gear electric drive axle structure proposed in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0020] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0021] The reference numerals in the drawings of the specification include: motor 1, first driving wheel 2, first connecting shaft 3, first input gear 4, second gear driving gear 5, first gear driving gear 6, second gear driven gear 7, first gear driven gear 8, third gear driving gear 9, third gear driven gear 10, transmission gear 11, and reducer 12.

[0022] A multi-speed electric drive axle structure, for example Figure 1 As shown:

[0023] It includes a motor 1, an input gear assembly, a first output gear assembly, a second output gear assembly, a third output gear assembly, a transmission gear 11, a first connecting shaft 3, a second connecting shaft and a third connecting shaft.

[0024] One end of the first connecting shaft 3 is connected to the motor 1, and the other end of the first connecting shaft 3 is connected to one end of the input gear assembly. One end of the first output gear assembly, one end of the second output gear assembly, one end of the third output gear assembly and the other end of the input gear assembly are all connected to the second connecting shaft. The other end of the first output gear assembly, the other end of the second output gear assembly, the other end of the third output gear assembly and the transmission gear 11 are all connected to the third connecting shaft.

[0025] Wherein, a first clutch is installed between the first output gear assembly connected to the third connecting shaft and the second output gear assembly, and a second clutch is installed between the input gear assembly connected to the second connecting shaft and the third output gear assembly;

[0026] It also includes a differential, a fourth connecting shaft and a fourth output gear assembly connected to the fourth connecting shaft by the differential. The transmission gear 11 is also meshed with one end of the fourth output gear assembly for transmission. The two ends of the fourth connecting shaft are respectively connected to the first drive wheel 2 and the second drive wheel.

[0027] The input gear assembly includes a first input gear 4 connected to the first connecting shaft 3 and a second input gear connected to the second connecting shaft, and the first input gear 4 is meshed with the second input gear.

[0028] The first output gear assembly includes a first gear driving gear 6 connected to the second connecting shaft and a first gear driven gear 8 connected to the third connecting shaft, and the first gear driving gear 6 is meshed with the first gear driven gear 8. The second output gear assembly includes a second gear driving gear 5 connected to the second connecting shaft and a second gear driven gear 7 connected to the third connecting shaft, and the second gear driving gear 5 is meshed with the second gear driven gear 7. The first clutch is installed between the first gear driven gear 8 and the second gear driven gear 7, and the first clutch can be freely selected to be connected to the first gear driven gear 8 or the second gear driven gear 7 by controlling the first clutch.

[0029] The third output gear assembly includes a third-speed driving gear 9 connected to the second connecting shaft and a third-speed driven gear 10 connected to the third connecting shaft, and the third-speed driving gear 9 is meshed with the third-speed driven gear 10. The second clutch is installed between the second input gear and the third-speed driving gear 9, and the second clutch can be freely selected to be connected to the third-speed driving gear 9 by controlling the second clutch.

[0030] The fourth output gear assembly includes a third output gear meshed with the transmission gear 11 .

[0031] In this embodiment, a shift controller is also used to control the first clutch and the second clutch to select the gear more quickly.

[0032] When the utility model is used, the specific working principle is as follows:

[0033] In the first gear, the second clutch is kept in the neutral position, the first clutch is shifted to the left, the third connecting shaft is connected to the first gear driven gear 8, the output shaft of the motor 1 rotates, the transmission is transmitted to the first connecting shaft 3, and the transmission is transmitted to the second connecting shaft through the input gear assembly. At this time, since only the first clutch is shifted to the left, the rotation of the second connecting shaft is reduced and output to the third connecting shaft through the first output gear assembly, and the movement is transmitted to the first drive wheel 2 and the second drive wheel through the meshing of the transmission gear 11 and the third output gear;

[0034] In the second gear, the second clutch is kept in the neutral position and the second clutch is shifted to the right to connect the third connecting shaft with the second gear driven gear 7;

[0035] In the third gear, the first clutch is maintained in the neutral position and does not move, and the second clutch is shifted to the right to connect the second connecting shaft with the third gear driving gear 9.

[0036] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A multi-gear electric drive axle structure, characterized in that: It includes a motor, an input gear assembly, a first output gear assembly, a second output gear assembly, a third output gear assembly, a transmission gear, a first connecting shaft for connecting the motor with one end of the input gear assembly, a second connecting shaft for connecting one end of the first output gear assembly, one end of the second output gear assembly, one end of the third output gear assembly and the other end of the input gear assembly, and a third connecting shaft for connecting the other end of the first output gear assembly, the other end of the second output gear assembly, the other end of the third output gear assembly and the transmission gear; A first clutch is provided between the first output gear assembly connected to the third connecting shaft and the second output gear assembly, and a second clutch is provided between the input gear assembly connected to the second connecting shaft and the third output gear assembly; It also includes a differential, a fourth connecting shaft and a fourth output gear assembly connected to the fourth connecting shaft by the differential. The transmission gear is also meshed with one end of the fourth output gear assembly for transmission. The two ends of the fourth connecting shaft are respectively connected to the first drive wheel and the second drive wheel.

2. A multi-gear electric drive axle structure according to claim 1, characterized in that: The input gear assembly includes a first input gear connected to the first connecting shaft and a second input gear connected to the second connecting shaft, and the first input gear is meshed with the second input gear.

3. The multi-gear electric drive axle structure according to claim 2, characterized in that: The first output gear assembly includes a first gear driving gear connected to the second connecting shaft and a first gear driven gear connected to the third connecting shaft, and the first gear driving gear is meshed with the first gear driven gear.

4. The multi-gear electric drive axle structure according to claim 3, characterized in that: The second output gear assembly includes a second gear driving gear connected to the second connecting shaft and a second gear driven gear connected to the third connecting shaft, and the second gear driving gear is meshed with the second gear driven gear.

5. The multi-gear electric drive axle structure according to claim 4, characterized in that: The first clutch is arranged between the first gear driven gear and the second gear driven gear.

6. The multi-gear electric drive axle structure according to claim 2, characterized in that: The third output gear assembly includes a third-speed driving gear connected to the second connecting shaft and a third-speed driven gear connected to the third connecting shaft, and the third-speed driving gear is meshed with the third-speed driven gear.

7. The multi-gear electric drive axle structure according to claim 6, characterized in that: The second clutch is arranged between the second input gear and the third gear driving gear.

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