CN218780711U

CN218780711U - Automatic gearbox of electric vehicle

Info

Publication number: CN218780711U
Application number: CN202223278836.7U
Authority: CN
Inventors: 陈玉进
Original assignee: Individual
Current assignee: Foshan Huaijiang Technology Co ltd
Priority date: 2022-12-07
Filing date: 2022-12-07
Publication date: 2023-03-31
Anticipated expiration: 2032-12-07

Abstract

The utility model relates to a technical field of electric motor car gearbox especially relates to an electric motor car automatic gearbox, the power distribution box comprises a box body, the box is including input mechanism, interlock mechanism and the output mechanism that the transmission in proper order connects, interlock mechanism is including the interlock axle of being connected with input mechanism and output mechanism transmission and install in the three-gear clutch of interlock axle bottom, three-gear clutch installs the ejecting mechanism who cuts off three-gear clutch transmission in the bottom. The utility model discloses an above design can improve the drive ratio of clutch promptly at the gear shift initial stage, reduces the wearing and tearing of clutch, prolongs the life of gearbox.

Description

Automatic gearbox of electric vehicle

Technical Field

The utility model belongs to the technical field of the technique of electric motor car gearbox and specifically relates to an electric motor car automatic gearbox is related to.

Background

At present, a plurality of centrifugal clutches are arranged on the transmission case of the electric vehicle with automatic speed change in the market, the corresponding working rotating speeds of the centrifugal clutches are set to be sequentially increased, and the rotating speeds are increased according to the power increase of an engine, so that the gear-up of the transmission case is realized.

However, in the initial stage of the shift-up of the centrifugal clutch, when the rotation speed is not high enough, the internal combination of the centrifugal clutch is not tight enough, which causes slipping and slow power shortage, and at the same time, the internal of the centrifugal clutch is relatively worn to generate heat, which reduces the service life of the transmission.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical defect who proposes among the above-mentioned background art, the utility model aims at providing an electric motor car automatic gearbox can improve the drive ratio of clutch promptly at the gear shift initial stage, reduces the wearing and tearing of clutch, prolongs the life of gearbox.

The utility model adopts the following technical scheme:

an automatic gearbox of an electric vehicle comprises a box body, wherein the box body comprises an input mechanism, a linkage mechanism and an output mechanism which are sequentially connected in a transmission manner, the linkage mechanism comprises a linkage shaft which is connected with the input mechanism and the output mechanism in a transmission manner and a three-gear clutch which is arranged at the bottom of the linkage shaft, and an ejection mechanism which cuts off the transmission of the three-gear clutch is arranged at the bottom of the three-gear clutch.

Preferably, the input mechanism includes an input motor installed at one side in the box body, an input shaft in transmission connection with an output end of the input motor, a second-gear input gear sleeved on the input shaft, a second-gear clutch sleeved on the input shaft, and a first-gear input gear sleeved on the input shaft.

Preferably, the linkage mechanism further includes a first-gear linkage gear, a third-gear linkage gear, a second linkage gear and a first linkage gear, which are sequentially sleeved on the linkage shaft from top to bottom, wherein the second linkage gear is engaged with the second-gear input gear, and the first linkage gear is engaged with the first-gear input gear.

Preferably, the output mechanism comprises an output shaft which is arranged on the box body and is parallel to the linkage shaft, and a first-gear one-way gear, a third-gear one-way gear and a second-gear one-way gear which are sequentially sleeved on the output shaft from top to bottom, wherein the first-gear one-way gear is meshed with the first-gear linkage gear, the second-gear one-way gear is meshed with the second-gear transmission gear, and the third-gear one-way gear is meshed with the third-gear linkage gear.

Preferably, the ejection mechanism comprises a clutch supporting disc abutted with the third-gear clutch, a pressure rod abutted with the clutch supporting disc, a cam abutted with the pressure rod, a separating rod rotationally connected with the cam and a self-locking motor driving the separating rod to rotate.

Preferably, the third-gear clutch is located between the second linkage gear and the first linkage gear, and a third-gear clutch connecting sleeve sleeved on the linkage shaft is installed on the upper portion of the third-gear clutch.

Preferably, the upper portion of output shaft is coaxial to be provided with the countershaft, one side of countershaft is provided with switch, and the opposite side is provided with the auto-lock motor switch, the countershaft overlaps from top to bottom in proper order and is equipped with plane bearing, centrifugal disc, plane bearing and reset spring, reset spring one end butt is on plane bearing, and the other end butt is on the box.

Preferably, a reverse gear mechanism is arranged in the box body, the reverse gear mechanism comprises a reverse gear pull rod arranged on one side of the box body and parallel to the output shaft, a reverse gear slide block fixedly sleeved on the reverse gear pull rod, and a return spring arranged between the reverse gear slide block and the box body, a reverse gear fixture block sleeved on the output shaft is arranged on the upper portion of the first-gear one-way gear, the edge of the lower surface of the reverse gear fixture block protrudes downwards to form a clamping edge, and a relief groove is formed in the side wall of the reverse gear fixture block along a circle of the circumference; wherein, the outside portion grafting of reverse gear slider is in stepping down the inslot.

To sum up, the beneficial effects of the utility model are that:

1. the utility model discloses a bottom at third gear clutch sets up ejection mechanism, utilizes ejection mechanism to realize the gear shift of second gear to third gear, and the initial stage of gear shift improves the drive ratio of clutch promptly, reduces the wearing and tearing of clutch, prolongs the life of gearbox.

2. The utility model discloses a set up the automatic mechanism on output mechanism for rise to the moment that needs the gear shift at speed, accomplish the control to ejecting mechanism automatically, thereby realize automatic gear shift.

3. The utility model discloses a set up reverse gear mechanism in one side of output mechanism for this gearbox embeds reverse gear mechanism, realizes the speed in reverse of electric motor car fast.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the embodiment of the present invention;

FIG. 2 is an enlarged view of the embodiment of the present invention at A in FIG. 1;

fig. 3 is a schematic circuit diagram of an embodiment of the present invention.

The reference numerals in the figures illustrate:

1. a box body; 2. an input mechanism; 21. inputting a motor; 22. an input shaft; 23. a second gear input gear; 24. a second gear clutch; 25. a first-gear input gear; 3. a linkage mechanism; 31. a linkage shaft; 32. a first gear linkage gear; 33. a third gear linkage gear; 34. a second gear linkage gear; 35. a second interlocking gear; 36. a third-gear clutch connecting sleeve; 37. a third gear clutch; 38. a first linkage gear; 4. an output mechanism; 41. an output shaft; 42. a first-gear one-way gear; 43. a third gear one-way gear; 44. a second-gear one-way gear; 5. an ejection mechanism; 51. a clutch bracing disc; 52. a pressure lever; 53. a cam; 54. a separating lever; 55. a self-locking motor; 6. a counter shaft; 61. a power switch; 62. a self-locking motor switch; 63. a flat bearing; 64. a centrifugal pan; 65. a return spring; 7. a reverse gear mechanism; 71. a reverse gear pull rod; 72. a reverse gear slide block; 73. a return spring; 74. a reverse gear clamping block; 75. edge clamping; 76. a yielding groove.

Detailed Description

In order that the present invention may be more readily and clearly understood, the following description of the present invention is provided in connection with the accompanying drawings.

It should be noted that the terms "center", "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc. used herein are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. "plurality" means two or more unless otherwise specified.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly and encompass, for example, both fixed and removable coupling as well as integral coupling; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

As shown in fig. 1 to 3, an automatic transmission for an electric vehicle comprises a case 1, wherein the case 1 comprises an input mechanism 2, a linkage mechanism 3 and an output mechanism 4 which are sequentially connected in a transmission manner, the linkage mechanism 3 comprises a linkage shaft 31 which is connected with the input mechanism 2 and the output mechanism 4 in a transmission manner and a three-gear clutch 37 which is installed at the bottom of the linkage shaft 31, and an ejection mechanism 5 which cuts off the transmission of the three-gear clutch 37 is installed at the bottom of the three-gear clutch 37.

The input mechanism 2 includes an input motor 21 installed at one side in the case 1, an input shaft 22 in transmission connection with an output end of the input motor 21, a second-gear input gear 23 sleeved on the input shaft 22, a second-gear clutch 24 sleeved on the input shaft 22, and a first-gear input gear 25 sleeved on the input shaft 22.

The linkage mechanism 3 further includes a first-gear linkage gear 32, a third-gear linkage gear 33, a second-gear linkage gear 34, a second linkage gear 35 and a first linkage gear 38, which are sequentially sleeved on the linkage shaft 31 from top to bottom, wherein the second linkage gear 35 is engaged with the second-gear input gear 23, and the first linkage gear 38 is engaged with the first-gear input gear 25.

The output mechanism 4 includes an output shaft 41 installed on the box 1 and parallel to the linkage shaft 31, a first-gear one-way gear 42, a third-gear one-way gear 43 and a second-gear one-way gear 44 sequentially sleeved on the output shaft 41 from top to bottom, wherein the first-gear one-way gear 42 is engaged with the first-gear linkage gear 32, the second-gear one-way gear 44 is engaged with the second-gear transmission gear, and the third-gear one-way gear 43 is engaged with the third-gear linkage gear 33.

The ejection mechanism 5 includes a clutch support disc 51 abutting against the third clutch 37, a pressure rod 52 abutting against the clutch support disc 51, a cam 53 abutting against the pressure rod 52, a release lever 54 rotatably connected to the cam 53, and a self-locking motor 55 for driving the release lever 54 to rotate.

The third clutch 37 is located between the second linkage gear 35 and the first linkage gear 38, and a third clutch connecting sleeve 36 sleeved on the linkage shaft 31 is installed on the upper portion of the third clutch 37.

The upper part of the output shaft 41 is coaxially provided with an auxiliary shaft 6, one side of the auxiliary shaft 6 is provided with a power switch 61, the other side of the auxiliary shaft 6 is provided with a self-locking motor switch 62, the auxiliary shaft 6 is sequentially sleeved with a plane bearing 63, a centrifugal disc 64, a plane bearing 63 and a return spring 65 from top to bottom, one end of the return spring 65 is abutted against the plane bearing 63, and the other end of the return spring 65 is abutted against the box body 1.

A reverse gear mechanism 7 is arranged in the box body 1, the reverse gear mechanism 7 comprises a reverse gear pull rod 71 which is arranged on one side of the box body 1 and is parallel to the output shaft 41, a reverse gear slide block 72 which is fixedly sleeved on the reverse gear pull rod 71, and a return spring 73 which is arranged between the reverse gear slide block 72 and the box body 1, a reverse gear fixture block 74 which is sleeved on the output shaft 41 is arranged at the upper part of the first-gear one-way gear 42, a clamping edge 75 is formed at the edge of the lower surface of the reverse gear fixture block 74 in a protruding mode, and a abdicating groove 76 is formed in one circle on the side wall of the reverse gear fixture block 74 along the circumference; wherein, the outer side portion of the reverse slide block 72 is inserted into the receding groove 76.

The principle of the embodiment of the application is as follows: the input motor 21 works, and the output end with the input motor 21 rotates;

in the first gear: the power of the input motor 21 is relatively low, the rotation speed of the input shaft 22 linked with the output end of the input motor 21 is relatively low, at this time, the input shaft 22 can only drive the first-gear input gear 25 to rotate, the first-gear input gear 25 drives the first linking gear 38 meshed with the first-gear input gear, the first linking gear 38 drives the first-gear linking gear 32 on the linking shaft 31 to rotate, the first-gear linking gear 32 drives the first-gear one-way gear 42 meshed with the first-gear linking gear, the first-gear one-way gear 42 rotates to drive the output shaft 41 to rotate, and the auxiliary shaft 6 rotates together with the output shaft 41 to output power.

When the second gear is selected; with the power of the input motor 21 increasing, the rotation speed of the input shaft 22 linked with the output end of the input motor 21 increasing, and at this time, the second-gear clutch 24 on the input shaft 22 working, in this embodiment, the second-gear clutch 24 is a centrifugal clutch, and with the increasing of the speed, the transmission of the power of the second-gear clutch 24 can be automatically completed, and then the power of the input shaft 22 is transmitted to the second-gear input gear 23 by the second-gear clutch 24, and then the second linked gear 35 is driven by the second-gear input gear 23, the second linked gear 35 drives the second-gear linked gear 34, the second-gear linked gear 34 drives the second-gear one-way gear 44, the second-gear one-way gear 44 rotates to drive the output shaft 41 to rotate, the auxiliary shaft 6 rotates together with the output shaft 41, and the power is output.

In the third gear, the rotating speed of the input shaft 22 linked with the output end of the input motor 21 is increased along with the increase of the power of the input motor 21, and at this time, the second-gear clutch 24 on the input shaft 22 works, in this embodiment, the second-gear clutch 24 is a centrifugal clutch, and the transmission of the power of the second-gear clutch 24 can be automatically completed along with the increase of the speed, so that the power of the input shaft 22 is transmitted to the second-gear input gear 23 by the second-gear clutch 24, and then the second linked gear 35 is driven by the second-gear input gear 23, the second linked gear 34 is driven by the second-gear linked gear 34, the second-gear linked gear 34 drives the second-gear one-way gear 44, the second-gear one-way gear 44 rotates to drive the output shaft 41 to rotate, and the auxiliary shaft 6 rotates together with the output shaft 41 to output the power; at this time, the centrifugal disc 64 on the counter shaft 6 is pushed up in the process of high-speed movement to touch the power switch 61 and the self-locking motor switch 62, the self-locking motor 55 is controlled to operate by an electric signal, the self-locking motor 55 rotates to drive the separation rod 54 to rotate, the cam 53 rotates to push against the clutch pressure rod 52, and then the clutch pressure rod 52 drives the clutch support disc 51 to move the third gear clutch 37 upwards, and simultaneously the third gear clutch connection sleeve 36 moves along with the rotation of the self-locking motor, so that the third gear clutch connection sleeve 36 connects the second interlocking gear 35 with the third gear interlocking gear 33, the second interlocking gear 35 drives the third gear interlocking gear 33 to rotate together, and then the third gear interlocking gear 33 is driven by the third gear interlocking gear 33 to rotate, and further the output shaft 41 is driven to rotate, and finally power is output from the counter shaft 6.

When the power of the input motor 21 is reduced, the return spring 65 pulls back the centrifugal disc 64, so that the plane bearing 63 positioned at the lower part of the centrifugal disc 64 touches the power switch 61 and the self-locking motor switch 62, and the third clutch 37 is returned, thereby cutting off the transmission connection of the second gear and the third gear interlocking gear 33.

When the reverse gear is performed: the reverse gear pull rod 71 is pulled to drive the reverse gear slide block 72 to move upwards, the reverse gear fixture block 74 is ejected out, the opening edge is separated from the first-gear one-way gear 42, the first-gear one-way gear 42 can only transmit in one direction, the reverse gear pull rod 71 is reset by the return spring 73, the reverse gear slide block 72 is abutted to the abdicating groove 76 of the reverse gear fixture block 74, the opening edge of the reverse gear fixture block 74 is just as in the first-gear one-way gear 42, the first-gear one-way gear 42 can rotate in the positive and reverse directions, and when the input motor 21 rotates in the reverse direction, the reverse function can be achieved.

The embodiments of the present invention are preferred embodiments of the present application, and the protection scope of the present application is not limited thereby, wherein like parts are denoted by like reference numerals. Therefore, the method comprises the following steps: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an electric motor car automatic gearbox, including the box, its characterized in that: the box body comprises an input mechanism, a linkage mechanism and an output mechanism which are sequentially connected in a transmission manner, the linkage mechanism comprises a linkage shaft which is connected with the input mechanism and the output mechanism in a transmission manner and a three-gear clutch which is arranged at the bottom of the linkage shaft, and an ejection mechanism which cuts off the transmission of the three-gear clutch is arranged at the bottom of the three-gear clutch.

2. The automatic transmission for electric vehicles according to claim 1, wherein: the input mechanism comprises an input motor arranged on one side in the box body, an input shaft in transmission connection with the output end of the input motor, a second-gear input gear sleeved on the input shaft, a second-gear clutch sleeved on the input shaft, and a first-gear input gear sleeved on the input shaft.

3. The automatic transmission for electric vehicles according to claim 2, characterized in that: the linkage mechanism further comprises a first-gear linkage gear, a third-gear linkage gear, a second linkage gear and a first linkage gear, which are sequentially sleeved on the linkage shaft from top to bottom, wherein the second linkage gear is meshed with the second-gear input gear, and the first linkage gear is meshed with the first-gear input gear.

4. The automatic transmission for electric vehicles according to claim 3, characterized in that: the output mechanism comprises an output shaft which is arranged on the box body and is parallel to the linkage shaft, and a first-gear one-way gear, a third-gear one-way gear and a second-gear one-way gear which are sequentially sleeved on the output shaft from top to bottom, wherein the first-gear one-way gear is meshed with the first-gear linkage gear, the second-gear one-way gear is meshed with the second-gear transmission gear, and the third-gear one-way gear is meshed with the third-gear linkage gear.

5. The automatic transmission for electric vehicles according to claim 1, characterized in that: the ejection mechanism comprises a clutch supporting disc abutted with the three-gear clutch, a pressure rod abutted with the clutch supporting disc, a cam abutted with the pressure rod, a separating rod rotationally connected with the cam and a self-locking motor driving the separating rod to rotate.

6. The automatic transmission for electric vehicles according to claim 5, wherein: the third-gear clutch is positioned between the second linkage gear and the first linkage gear, and a third-gear clutch connecting sleeve sleeved on the linkage shaft is installed at the upper part of the third-gear clutch.

7. The automatic transmission for electric vehicles according to claim 4, wherein: the upper portion of output shaft is coaxial to be provided with the countershaft, one side of countershaft is provided with switch, and the opposite side is provided with the auto-lock motor switch, the countershaft overlaps from top to bottom in proper order and is equipped with plane bearing, centrifugal disc, plane bearing and reset spring, reset spring one end butt is on plane bearing, the other end butt is on the box.

8. The automatic transmission for electric vehicles according to claim 4, wherein: a reverse gear mechanism is arranged in the box body, the reverse gear mechanism comprises a reverse gear pull rod, a reverse gear sliding block and a return spring, the reverse gear pull rod is arranged on one side of the box body and is parallel to the output shaft, the reverse gear sliding block is fixedly sleeved on the reverse gear pull rod, the return spring is arranged between the reverse gear sliding block and the box body, a reverse gear clamping block sleeved on the output shaft is arranged on the upper portion of the first-gear one-way gear, clamping edges are formed on the edges of the lower surface of the reverse gear clamping block in a protruding mode, and a abdicating groove is formed in the side wall of the reverse gear clamping block along a circle of the circumference; wherein, the outside portion grafting of reverse gear slider is in stepping down the inslot.