CN210128045U

CN210128045U - Simple multi-gear gearbox for electric vehicle

Info

Publication number: CN210128045U
Application number: CN201920926928.0U
Authority: CN
Inventors: 罗刚; 周飞
Original assignee: Chongqing Nanbian Electromechanical Co Ltd
Current assignee: Chongqing Nanbian Electromechanical Co Ltd
Priority date: 2019-06-19
Filing date: 2019-06-19
Publication date: 2020-03-06
Anticipated expiration: 2029-06-19

Abstract

The utility model discloses a simple multi-gear gearbox for an electric vehicle, which comprises a box body, wherein a transmission shaft, a shift shaft, a reversing shaft and an output mechanism are arranged in the box body, and a first driving gear and a second driving gear are sleeved on the transmission shaft; a power output gear, a first driven gear and a second driven gear are sleeved on the gear shifting shaft, wherein the first driven gear and the second driven gear are both one-way gears; the first driven gear is connected with the shift shaft through a shaft sleeve, and the shift shaft is also provided with a shift sliding sleeve which is connected with the shift shaft in a sliding fit manner through a spline; the output mechanism is connected with the output driving gear in a matching mode. The utility model discloses the structure is simpler, and processing is more convenient to only need carry out local simple change and just can be applicable to two wheeler electric motor car or tricycle electric motor car and four-wheel electric motor car, thereby greatly reduced manufacturing cost.

Description

Simple multi-gear gearbox for electric vehicle

Technical Field

The utility model relates to an electric motor car gearbox technical field especially relates to a simple and easy many gears gearbox for electric motor car.

Background

At present, electric vehicles on the market include two-wheeled electric vehicles, three-wheeled electric vehicles, and four-wheeled electric vehicles. The existing automatic gearbox of the electric vehicle has a complex structure and a high use failure rate, and different production lines are required to be adopted for processing in the production process, so that the processing is not only very inconvenient, but also the production cost is increased.

In addition, the electric vehicle using the existing gearbox is characterized in that the output gear is meshed with the driving gear, and the driving gear is driven by the motor, so that after the motor stops working, the electric vehicle continuously moves forwards under the action of inertia and can reversely drive the motor to rotate, resistance is formed on the movement of the electric vehicle, and the distance for the electric vehicle to continuously move forwards after the motor stops working is short, so that energy waste is caused.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to solve the problems of complex structure, inconvenient processing and high processing cost of the existing gearbox, and provides a simple multi-gear gearbox for an electric vehicle, which has simpler structure, more convenient processing, good stability and low failure rate and greatly reduces the production cost; and after the motor stops working, resistance can not be generated for the forward movement of the electric vehicle.

In order to solve the technical problem, the utility model discloses a technical scheme is like this: the utility model provides an electric motor car is with simple and easy many gears gearbox, includes the box, is equipped with transmission shaft, selector shaft, reversing shaft and output mechanism, its characterized in that in the box: a first driving gear and a second driving gear are sleeved on the transmission shaft and are fixedly connected with the transmission shaft;

a power output gear, a first driven gear and a second driven gear are sleeved on the gear shifting shaft, wherein the first driven gear and the second driven gear are both one-way gears, and the direction in which the first driven gear drives the gear shifting shaft to rotate is the same as the direction in which the second driving gear drives the transmission shaft to rotate (namely the free rotation directions of the first driving gear and the second driven gear are the same); the power output gear and the second driven gear are both fixedly connected with the shift shaft, the first driven gear is connected with the shift shaft through a shaft sleeve, and the shaft sleeve is arranged on the shift shaft in an empty sleeve manner; the first driven gear is meshed with the first driving gear, and a gap is formed between the second driven gear and the second driving gear; the reversing shaft is positioned on one side of the transmission shaft and the gear shifting shaft, a reversing gear is arranged on the reversing shaft, and the reversing gear is simultaneously meshed with the second driving gear and the second driven gear;

the gear shifting shaft is also provided with a gear shifting sliding sleeve, the gear shifting sliding sleeve is connected with the gear shifting shaft in a sliding fit mode through splines and can move to be combined with the shaft sleeve, and when the gear shifting sliding sleeve is combined with the shaft sleeve, the first driven gear can drive the gear shifting shaft to rotate;

a shifting fork groove which is wound around the side wall of the gear shifting sliding sleeve for a circle is also arranged on the side wall of the gear shifting sliding sleeve, a shifting fork shaft is also arranged in the box body, the shifting fork shaft is connected with the box body in a sliding fit manner, and the axial direction of the shifting fork shaft is consistent with the axial direction of the gear shifting shaft; a shifting fork is arranged on the shifting fork shaft, and a fork foot fork of the shifting fork is arranged in a shifting fork groove on the gear shifting sliding sleeve;

the output mechanism is connected with the output driving gear in a matching mode.

Preferably, one end, close to the gear shifting sliding sleeve, of the shaft sleeve protrudes out of the first driven gear, the gear shifting sliding sleeve comprises an inner sleeve and an outer sleeve, the inner sleeve is connected with the gear shifting shaft through a spline, and the shifting fork groove is located on the outer wall of the outer sleeve; the outer wall of the shaft sleeve protruding out of the first driven gear portion and the outer wall of the inner sleeve are provided with spline grooves, the inner side of the outer sleeve is provided with spline teeth, the outer sleeve can be connected with the shaft sleeve and the spline grooves in the inner sleeve in a sliding fit mode through the spline teeth, and can be connected with the transmission convex ring and the spline grooves in the inner sleeve in a matched mode simultaneously, so that the first driven gear drives the shifting shaft to rotate.

Preferably, one end of the shaft sleeve, which is close to the gear shifting sliding sleeve, is provided with a clamping groove; the clamping jaw corresponding to the clamping groove is arranged on one side, close to the first driven gear, of the gear shifting sliding sleeve, after the gear shifting sliding sleeve moves towards the direction of the first driven gear, the gear shifting sliding sleeve can be combined with the shaft sleeve through the matching of the clamping jaw and the clamping groove, and therefore the first driven gear drives the gear shifting shaft to rotate.

Preferably, the output mechanism comprises an output driven gear and an output shaft, the output driven gear is sleeved on the output shaft and is meshed with the output driving gear, and two ends of the output shaft extend out of two sides of the box body and are connected with the box body in a rotating fit mode.

Furthermore, the first driven gear and the second driven gear respectively comprise a gear ring and an isolator, and the gear ring is sleeved on the isolator and is fixedly connected with the isolator; the one-way clutch of the first driven gear is sleeved on the shaft sleeve and is fixedly connected with the shaft sleeve; the isolator of the second driven gear is sleeved on a spline sleeve and fixedly connected with the spline sleeve, and the spline sleeve is connected with the shift shaft in a matching mode through a spline.

Preferably, the shift sliding sleeve is located between the first driven gear and the second driven gear, and the shift sliding sleeve can move to be combined with the second driven gear, and when the shift sliding sleeve is combined with the second driven gear, the second driven gear can drive the shift shaft to rotate;

the output mechanism comprises a differential mechanism and two output half shafts, a main gear of the differential mechanism is sleeved on one of the output half shafts and is fixedly connected with the output half shaft, and the main gear is meshed with the output driving gear; one end of each output half shaft is fixedly connected with the two half shaft gears of the differential mechanism, and the other end of each output half shaft extends out of the box body and is rotatably connected with the box body.

Preferably, one end, close to the gear shift sliding sleeve, of the shaft sleeve protrudes out of the first driven gear, and one side, close to the gear shift sliding sleeve, of a gear ring of the second driven gear is provided with a reverse convex ring; the gear shifting sliding sleeve comprises an inner sleeve and an outer sleeve, the inner sleeve is connected with the gear shifting shaft through a spline, and the shifting fork groove is positioned on the outer wall of the outer sleeve; the outer walls of the part of the shaft sleeve protruding out of the first driven gear, the reverse gear convex ring and the inner sleeve are provided with spline grooves, the inner side of the outer sleeve is provided with spline teeth, the outer sleeve can be in sliding fit with the spline grooves on the shaft sleeve, the reverse gear convex ring and the inner sleeve through the spline teeth and is connected with the spline grooves on the shaft sleeve and the inner sleeve in a matched mode, and the outer sleeve can be simultaneously connected with the spline grooves on the shaft sleeve and the inner sleeve in a matched mode or simultaneously connected with the spline grooves on the reverse gear convex ring and the inner sleeve in a matched mode, so that the first.

Preferably, one end of the shaft sleeve, which is close to the gear shifting sliding sleeve, is provided with a clamping groove; a claw corresponding to the clamping groove is arranged on one side, close to the first driven gear, of the gear shift sliding sleeve, and after the gear shift sliding sleeve moves towards the direction of the first driven gear, the gear shift sliding sleeve can be combined with the shaft sleeve through the matching of the claw and the clamping groove, so that the first driven gear drives the gear shift shaft to rotate;

a clamping groove is formed in one side, close to the gear shifting sliding sleeve, of the gear ring of the second driven gear; the clamping jaw corresponding to the clamping groove is arranged on one side, close to the second driven gear, of the gear shift sliding sleeve, after the gear shift sliding sleeve moves towards the direction of the second driven gear, the gear shift sliding sleeve can be combined with the gear ring of the second driven gear through the matching of the clamping jaw and the clamping groove, and therefore the gear ring of the second driven gear can drive the gear shift shaft to rotate.

Compared with the prior art, the utility model has the advantages of as follows:

1. the structure is simpler, the processing is more convenient, the stability is good, and the failure rate is low; the variable speed that can be applicable to two-wheeled electric motor car uses to through adopting different drive ratios (the drive ratio between first driving gear and second driving gear and first driven gear and the second driven gear), enable the gearbox and have two gears, thereby can provide better output power for two-wheeled electric motor car.

2. Different output mechanisms can be assembled according to requirements to be installed on the three-wheel electric vehicle and the four-wheel electric vehicle for use, so that the applicability of the gearbox is stronger.

3. When being used for tricycle electric motor car and four-wheel electric motor car to use, only need to install the gear shift sliding sleeve between first driven gear and second driven gear to make the gear shift sliding sleeve can combine with second driven gear, can carry out the output of reversing a gear, only need like this simple adjustment just can be used for tricycle electric motor car and four-wheel electric motor car, thereby can make the main assembly of gearbox accomplish on same production line, greatly reduced manufacturing cost.

4. Because the first driving gear and the second driven gear adopt the one-way gears, after the motor stops working, resistance can not be generated for the forward movement of the electric vehicle, so that the electric vehicle can slide, and the electric vehicle can save more energy in the running process.

Drawings

Fig. 1 is a schematic structural view of embodiment 1.

Fig. 2 is a schematic structural view of embodiment 2.

In the figure: 1-a shift shaft, 2-a transmission shaft, 3-a first driving gear, 4-a second driving gear, 5-an output driving gear, 6-a first driven gear, 7-a second driven gear, 8-a shaft sleeve, 9-a reversing gear, 10-an inner sleeve, 11-an outer sleeve, 12-a spline sleeve, 13-an output driven gear, 14-an output shaft, 15-a reverse gear convex ring, 16-a differential, 17-an output half shaft and 18-a main gear.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

Example (b): referring to fig. 1, a simple multi-gear transmission for an electric vehicle comprises a box body, wherein a transmission shaft 2, a shift shaft 1, a reversing shaft and an output mechanism are arranged in the box body. The transmission shaft 2 is sleeved with a first driving gear 3 and a second driving gear 4, and the first driving gear 3 and the second driving gear 4 are fixedly connected with the transmission shaft 2. In practice, as an embodiment, one end of the transmission shaft 2 extends out of the box body so as to be connected with the motor. As another embodiment, a power input shaft is further provided in the case, a power input gear is provided on the power input shaft, a reduction gear is sleeved and fixedly connected to the transmission shaft 2, and the reduction gear is engaged with the power input gear, so that power input can be performed by connecting the power input shaft with the motor, and power input is performed through the reduction gear, thereby effectively improving output torque.

The shift shaft 1 is sleeved with a power output gear, a first driven gear 6 and a second driven gear 7, wherein the first driven gear 6 and the second driven gear 7 both adopt one-way gears, and the direction in which the first driven gear 6 drives the shift shaft 1 to rotate is the same as the direction in which the second driving gear 4 drives the transmission shaft 2 to rotate (namely, the free rotation directions of the first driving gear 3 and the second driven gear 7 are the same). The power output gear and the second driven gear 7 are both fixedly connected with the shift shaft 1, the first driven gear 6 is connected with the shift shaft 1 through a shaft sleeve 8, and the shaft sleeve 8 is arranged on the shift shaft 1 in an empty sleeve mode. The first driven gear 6 is meshed with the first driving gear 3, and a gap is formed between the second driven gear 7 and the second driving gear 4. The reversing shaft is positioned on one side of the transmission shaft 2 and the gear shifting shaft 1, a reversing gear 9 is arranged on the reversing shaft, the reversing gear 9 is connected with the box body through the reversing shaft, and the reversing gear 9 is meshed with the second driving gear 4 and the second driven gear 7 simultaneously.

Still be equipped with a gear shift sliding sleeve on selector shaft 1, the gear shift sliding sleeve passes through the spline and links to each other with selector shaft 1 sliding fit, and the gear shift sliding sleeve can move to and combine together with axle sleeve 8, and when the gear shift sliding sleeve combines together with axle sleeve 8, first driven gear 6 can drive selector shaft 1 and rotate. A shifting fork groove which is wound around the side wall of the gear shifting sliding sleeve for a circle is further arranged on the side wall of the gear shifting sliding sleeve, a shifting fork shaft is further arranged in the box body, the shifting fork shaft is connected with the box body in a sliding fit mode, the axial direction of the shifting fork shaft is consistent with the axial direction of the gear shifting shaft 1, and one end of the shifting fork shaft extends out of the box body so as to be connected with a transmission mechanism conveniently to drive the shifting fork shaft to move; a shifting fork is arranged on the shifting fork shaft, and a fork foot fork of the shifting fork is arranged in a shifting fork groove on the gear shifting sliding sleeve.

As an embodiment, one end of the shaft sleeve 8 close to the shift sliding sleeve protrudes out of the first driven gear 6, the shift sliding sleeve includes an inner sleeve 10 and an outer sleeve 11, the inner sleeve 10 is connected with the shift spindle 1 through a spline, and the shift fork groove is located on the outer wall of the outer sleeve 11. All be equipped with the spline groove on the outer wall of axle sleeve 8 protrusion in first driven gear 6 part and the outer wall of

endotheca

10, 11 inboards of overcoat have the spline tooth, and overcoat 11 can link to each other through spline tooth and the spline groove sliding fit on axle sleeve 8 and the endotheca 10 to can link to each other with the spline groove cooperation on transmission bulge loop and the endotheca 10 simultaneously, so that first driven gear 6 drives the rotation of selector shaft 1. Thus, the operation is more convenient, and the power output can be more stably carried out. When the outer sleeve 11 is matched and connected with the spline grooves on the shaft sleeve 8 and the inner sleeve 10 at the same time, the electric vehicle can move forwards by controlling the motor to rotate forwards and backwards, and the first driving gear 3 and the second driving gear 4 are different from the first driven gear 6 and the second driven gear 7 in transmission ratio, so that the electric vehicle can move forwards at different gears.

The output mechanism is connected with the output driving gear 5 in a matching way. The output mechanism comprises an output driven gear 13 and an output shaft 14, the output driven gear 13 is sleeved on the output shaft 14 and is meshed with the output driving gear 5, and two ends of the output shaft 14 extend out of two sides of the box body and are connected with the box body in a rotating fit mode.

When the clutch is specifically implemented, the first driven gear 6 and the second driven gear 7 both comprise gear rings and an isolator, and the gear rings are sleeved on the isolator and fixedly connected with the isolator. Wherein, the one-way clutch of the first driven gear 6 is sleeved on the shaft sleeve 8 and is fixedly connected with the shaft sleeve 8; the isolator of the second driven gear 7 is sleeved on a spline housing 12 and is fixedly connected with the spline housing 12, and the spline housing 12 is connected with the shift shaft 1 in a matching way through a spline. Therefore, the assembly is more convenient and quicker, and the production and processing costs are lower. Wherein, the isolator can adopt one-way bearing, like this, can further reduce the whole cost of gearbox. In order to better realize the positioning, two sides of the spline housing 12 are positioned by clamp springs.

The scheme has a simple overall structure, can be suitable for being assembled with the two-wheeled electric vehicle, and realizes power output of different gears, so that sufficient power is provided for the two-wheeled electric vehicle, and the two-wheeled electric vehicle can be ensured to have sufficient power output particularly under the road conditions of climbing, pothole, muddy and the like; in addition, the first driving gear 3 and the second driven gear 7 adopt one-way gears, so that after the motor stops working, resistance can not be generated for the forward movement of the electric vehicle, the electric vehicle can slide, and the energy can be saved in the running process of the electric vehicle.

As another embodiment, a clamping groove is formed at one end of the shaft sleeve 8 close to the shift sliding sleeve; the clamping jaw corresponding to the clamping groove is arranged on one side, close to the first driven gear 6, of the gear shift sliding sleeve, and after the gear shift sliding sleeve moves towards the first driven gear 6, the gear shift sliding sleeve can be combined with the shaft sleeve 8 through the matching of the clamping jaw and the clamping groove, so that the first driven gear 6 drives the gear shift shaft 1 to rotate. The structure of the scheme is further simplified, and the processing is more convenient.

Embodiment 2, refer to fig. 2, a simple multi-gear transmission for an electric vehicle comprises a box body, and a transmission shaft 2, a shift shaft 1, a reversing shaft and an output mechanism are arranged in the box body. The transmission shaft 2 is sleeved with a first driving gear 3 and a second driving gear 4, and the first driving gear 3 and the second driving gear 4 are fixedly connected with the transmission shaft 2. In practice, as an embodiment, one end of the transmission shaft 2 extends out of the box body so as to be connected with the motor. As another embodiment, a power input shaft is further provided in the case, a power input gear is provided on the power input shaft, a reduction gear is sleeved and fixedly connected to the transmission shaft 2, and the reduction gear is engaged with the power input gear, so that power input can be performed by connecting the power input shaft with the motor, and power input is performed through the reduction gear, thereby effectively improving output torque.

The shift shaft 1 is sleeved with a power output gear, a first driven gear 6 and a second driven gear 7, wherein the first driven gear 6 and the second driven gear 7 both adopt one-way gears, and the direction in which the first driven gear 6 drives the shift shaft 1 to rotate is the same as the direction in which the second driving gear 4 drives the transmission shaft 2 to rotate (namely, the free rotation directions of the first driving gear 3 and the second driven gear 7 are the same). The power output gear and the second driven gear 7 are both fixedly connected with the shift shaft 1, the first driven gear 6 is connected with the shift shaft 1 through a shaft sleeve 8, and the shaft sleeve 8 is arranged on the shift shaft 1 in an empty sleeve mode. In order to better realize the positioning, the two sides of the shaft sleeve 8 are positioned through clamp springs. The first driven gear 6 is meshed with the first driving gear 3, and a gap is formed between the second driven gear 7 and the second driving gear 4. The reversing shaft is positioned on one side of the transmission shaft 2 and the gear shifting shaft 1, a reversing gear 9 is arranged on the reversing shaft, and the reversing gear 9 is meshed with the second driving gear 4 and the second driven gear 7 simultaneously.

A gear shift sliding sleeve is further arranged on the gear shift shaft 1 and is positioned between the first driven gear 6 and the second driven gear 7; the gear shift sliding sleeve is connected with the gear shift shaft 1 in a sliding fit mode through splines, the gear shift sliding sleeve can move to be combined with the shaft sleeve 8 or combined with the second driven gear 7, when the gear shift sliding sleeve is combined with the shaft sleeve 8, the first driven gear 6 can drive the gear shift shaft 1 to rotate, and when the gear shift sliding sleeve is combined with the second driven gear 7, the second driven gear 7 can drive the gear shift shaft 1 to rotate. A shifting fork groove which is wound around the side wall of the gear shifting sliding sleeve for a circle is further arranged on the side wall of the gear shifting sliding sleeve, a shifting fork shaft is further arranged in the box body, the shifting fork shaft is connected with the box body in a sliding fit mode, the axial direction of the shifting fork shaft is consistent with the axial direction of the gear shifting shaft 1, and one end of the shifting fork shaft extends out of the box body so as to be connected with a transmission mechanism conveniently to drive the shifting fork shaft to move; a shifting fork is arranged on the shifting fork shaft, and a fork foot fork of the shifting fork is arranged in a shifting fork groove on the gear shifting sliding sleeve.

As an embodiment, one end of the shaft sleeve 8 close to the shift sliding sleeve protrudes out of the first driven gear 6, and the diameter of the protruding part is enlarged to form an enlarged section; and a reverse convex ring 15 is arranged on one side of the gear ring of the second driven gear 7 close to the gear shifting sliding sleeve. The gear shifting sliding sleeve comprises an inner sleeve 10 and an outer sleeve 11, the inner sleeve 10 is connected with the gear shifting shaft 1 through a spline, and the shifting fork groove is located on the outer wall of the outer sleeve 11. Spline grooves are formed in the outer wall of the expansion section of the shaft sleeve 8, the outer wall of the reverse convex ring 15 and the outer wall of the inner sleeve 10, spline teeth are arranged on the inner side of the outer sleeve 11, the outer sleeve 11 can be connected with the shaft sleeve 8, the reverse convex ring 15 and the spline grooves in the inner sleeve 10 in a sliding fit mode through the spline teeth, and can be connected with the shaft sleeve 8 and the spline grooves in the inner sleeve 10 in a matched mode or connected with the reverse convex ring 15 and the spline grooves in the inner sleeve 10 in a matched mode simultaneously, so that the first driven gear 6 or the second driven gear 7 drives the gear shifting shaft 1 to rotate. Like this, through control motor just reversing to the cooperation operation declutch shift shaft can realize the back of moving ahead of electric motor car and retreat, and because the drive ratio between first driving gear 3 and second driving gear 4 and first driven gear 6 and the second driven gear 7 is different, thereby can realize the advance of different gears. When the outer sleeve 11 is matched and connected with the spline grooves on the shaft sleeve 8 and the inner sleeve 10 at the same time, the electric vehicle can move forwards by controlling the motor to rotate forwards and backwards; when the outer sleeve 11 is matched and connected with the reverse gear convex ring 15 and the spline grooves on the inner sleeve 10 at the same time, the reverse gear can be realized by controlling the motor. In actual processing, the reverse convex ring 15 and the second impulse gear are integrally formed, so that the stability of the whole structure of the second driven gear 7 is better. For convenience of assembly, the power output gear is positioned on one side, away from the second driven gear 7, of the first driven gear 6, and the first driven gear 6 is tightly attached to the power output gear; two ends of the inner sleeve 10 are respectively clung to the shaft sleeve 8 and the reverse convex ring 15.

The output mechanism is connected with the output driving gear 5 in a matching way. The output mechanism comprises a differential 16 and two output half shafts 17, a main gear 18 of the differential 16 is sleeved on one of the output half shafts 17 and is fixedly connected with the output half shaft 17, and the main gear 18 is meshed with the output driving gear 5. One end of each of the two output half shafts 17 is fixedly connected with the two half shaft gears of the differential 16, and the other end extends out of the box body and is rotatably connected with the box body.

The scheme is suitable for assembling and using the three-wheel electric vehicle or the four-wheel electric vehicle, and realizes power output of different forward gears and reverse gear output, so that enough power is provided for the three-wheel electric vehicle and the four-wheel electric vehicle, and the three-wheel electric vehicle and the four-wheel electric vehicle can be ensured to have enough power output under the conditions of climbing, pothole, muddy road and the like; in addition, the first driving gear 3 and the second driven gear 7 adopt one-way gears, so that after the motor stops working, resistance can not be generated for the forward movement of the electric vehicle, the electric vehicle can slide, and the energy can be saved in the running process of the electric vehicle.

As another embodiment, a clamping groove is formed at one end of the shaft sleeve 8 close to the shift sliding sleeve; the clamping jaw corresponding to the clamping groove is arranged on one side, close to the first driven gear 6, of the gear shift sliding sleeve, and after the gear shift sliding sleeve moves towards the first driven gear 6, the gear shift sliding sleeve can be combined with the shaft sleeve 8 through the matching of the clamping jaw and the clamping groove, so that the first driven gear 6 drives the gear shift shaft 1 to rotate.

A clamping groove is also formed in one side, close to the gear shifting sliding sleeve, of the gear ring of the second driven gear 7; the clamping jaw corresponding to the clamping groove is also arranged on one side, close to the second driven gear 7, of the gear shift sliding sleeve, and after the gear shift sliding sleeve moves towards the second driven gear 7, the gear shift sliding sleeve can be combined with the gear ring of the second driven gear 7 through the matching of the clamping jaw and the clamping groove, so that the gear ring of the second driven gear 7 can drive the gear shift shaft 1 to rotate.

The structure of the scheme is simpler, and the production efficiency can be further improved.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the technical solutions, and those skilled in the art should understand that those modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all should be covered in the scope of the claims of the present invention.

Claims

1. The utility model provides an electric motor car is with simple and easy many gears gearbox, includes the box, is equipped with transmission shaft, selector shaft, reversing shaft and output mechanism, its characterized in that in the box: a first driving gear and a second driving gear are sleeved on the transmission shaft and are fixedly connected with the transmission shaft;

the gear shifting shaft is sleeved with a power output gear, a first driven gear and a second driven gear, wherein the first driven gear and the second driven gear are both one-way gears, and the direction in which the first driven gear drives the gear shifting shaft to rotate is the same as the direction in which the second driving gear drives the transmission shaft to rotate; the power output gear and the second driven gear are both fixedly connected with the shift shaft, the first driven gear is connected with the shift shaft through a shaft sleeve, and the shaft sleeve is arranged on the shift shaft in an empty sleeve manner; the first driven gear is meshed with the first driving gear, and a gap is formed between the second driven gear and the second driving gear; the reversing shaft is positioned on one side of the transmission shaft and the gear shifting shaft, a reversing gear is arranged on the reversing shaft, and the reversing gear is simultaneously meshed with the second driving gear and the second driven gear;

2. The simple multi-gear gearbox for electric vehicles according to claim 1, characterized in that: one end, close to the gear shifting sliding sleeve, of the shaft sleeve protrudes out of the first driven gear, the gear shifting sliding sleeve comprises an inner sleeve and an outer sleeve, the inner sleeve is connected with the gear shifting shaft through a spline, and the shifting fork groove is located on the outer wall of the outer sleeve; the outer wall of the shaft sleeve protruding out of the first driven gear portion and the outer wall of the inner sleeve are provided with spline grooves, the inner side of the outer sleeve is provided with spline teeth, the outer sleeve can be connected with the shaft sleeve and the spline grooves in the inner sleeve in a sliding fit mode through the spline teeth, and can be connected with the transmission convex ring and the spline grooves in the inner sleeve in a matched mode simultaneously, so that the first driven gear drives the shifting shaft to rotate.

3. The simple multi-gear gearbox for electric vehicles according to claim 1, characterized in that: a clamping groove is formed in one end, close to the gear shifting sliding sleeve, of the shaft sleeve; the clamping jaw corresponding to the clamping groove is arranged on one side, close to the first driven gear, of the gear shifting sliding sleeve, after the gear shifting sliding sleeve moves towards the direction of the first driven gear, the gear shifting sliding sleeve can be combined with the shaft sleeve through the matching of the clamping jaw and the clamping groove, and therefore the first driven gear drives the gear shifting shaft to rotate.

4. The simple multi-gear gearbox for electric vehicles according to claim 1, characterized in that: the output mechanism comprises an output driven gear and an output shaft, the output driven gear is sleeved on the output shaft and meshed with the output driving gear, and two ends of the output shaft extend out of two sides of the box body and are connected with the box body in a rotating fit mode.

5. The simple multi-gear gearbox for electric vehicles according to claim 1, characterized in that: the first driven gear and the second driven gear respectively comprise a gear ring and an isolator, and the gear ring is sleeved on the isolator and is fixedly connected with the isolator; the one-way clutch of the first driven gear is sleeved on the shaft sleeve and is fixedly connected with the shaft sleeve; the isolator of the second driven gear is sleeved on a spline sleeve and fixedly connected with the spline sleeve, and the spline sleeve is connected with the shift shaft in a matching mode through a spline.

6. The simple multi-gear gearbox for electric vehicles according to claim 5, characterized in that: the gear shifting sliding sleeve is positioned between the first driven gear and the second driven gear, the gear shifting sliding sleeve can move to be combined with the second driven gear, and when the gear shifting sliding sleeve is combined with the second driven gear, the second driven gear can drive the gear shifting shaft to rotate;

the output mechanism comprises a differential mechanism and two output half shafts, a main gear of the differential mechanism is sleeved on one of the output half shafts and is fixedly connected with the output half shaft, and the main gear is meshed with an output driving gear; one end of each output half shaft is fixedly connected with the two half shaft gears of the differential mechanism, and the other end of each output half shaft extends out of the box body and is rotatably connected with the box body.

7. The simple multi-gear gearbox for electric vehicles according to claim 6, characterized in that: one end, close to the gear shifting sliding sleeve, of the shaft sleeve protrudes out of the first driven gear, and one side, close to the gear shifting sliding sleeve, of a gear ring of the second driven gear is provided with a reverse convex ring; the gear shifting sliding sleeve comprises an inner sleeve and an outer sleeve, the inner sleeve is connected with the gear shifting shaft through a spline, and the shifting fork groove is positioned on the outer wall of the outer sleeve; the outer walls of the part of the shaft sleeve protruding out of the first driven gear, the reverse gear convex ring and the inner sleeve are provided with spline grooves, the inner side of the outer sleeve is provided with spline teeth, the outer sleeve can be in sliding fit with the spline grooves on the shaft sleeve, the reverse gear convex ring and the inner sleeve through the spline teeth and is connected with the spline grooves on the shaft sleeve and the inner sleeve in a matched mode, and the outer sleeve can be simultaneously connected with the spline grooves on the shaft sleeve and the inner sleeve in a matched mode or simultaneously connected with the spline grooves on the reverse gear convex ring and the inner sleeve in a matched mode, so that the first.

8. The simple multi-gear gearbox for electric vehicles according to claim 6, characterized in that: a clamping groove is formed in one end, close to the gear shifting sliding sleeve, of the shaft sleeve; a claw corresponding to the clamping groove is arranged on one side, close to the first driven gear, of the gear shift sliding sleeve, and after the gear shift sliding sleeve moves towards the direction of the first driven gear, the gear shift sliding sleeve can be combined with the shaft sleeve through the matching of the claw and the clamping groove, so that the first driven gear drives the gear shift shaft to rotate;