CN217633772U

CN217633772U - Novel electric vehicle gear shifting box body with speed change function

Info

Publication number: CN217633772U
Application number: CN202221667955.9U
Authority: CN
Inventors: 苏援农
Original assignee: Xuzhou Longfeng Intelligent Technology Co ltd
Current assignee: Xuzhou Longfeng Intelligent Technology Co ltd
Priority date: 2022-06-29
Filing date: 2022-06-29
Publication date: 2022-10-21
Anticipated expiration: 2032-06-29

Abstract

The utility model discloses a novel have variable speed electric motor car gear shifting box, including left box, motor housing, driving motor, right box, rear axle body, variable speed drive subassembly and fan housing, left side box and right box pass through bolted connection, the rear axle body passes through the bolt and is connected with left box and right box, variable speed drive subassembly is rotatable to be located in the space that left box and right box formed, motor housing links to each other with right box is fixed, driving motor is fixed to be located in the motor housing, the fan housing links to each other with motor housing is fixed, variable speed drive subassembly links to each other with driving motor is fixed, variable speed drive subassembly is rotatable to run through right box and motor housing and driving motor's output end is fixed links to each other. The utility model belongs to electric motor car product manufacturing field specifically indicates a redesign gear overall arrangement, and the box is little, light in weight, the big neotype of moment of torsion has variable speed's electric motor car gear shifting box.

Description

Novel electric vehicle gear shifting box body with speed change function

Technical Field

The utility model belongs to electric motor car product manufacturing field specifically indicates a novel electric motor car gear shifting box that has a variable speed.

Background

With the continuous development of new energy technology, an electric vehicle as a novel environment-friendly vehicle has become a main vehicle in many cities and is more and more recognized by society, and at present, besides an electric bus, an electric tricycle and an electric low-speed four-wheel vehicle are popularized. In recent years, with the continuous deepening of environmental protection work, the reduction of carbon emission and the improvement of urban air quality are indispensable work contents in government work, and the demand for electric vehicles is gradually increased. Therefore, improving the product quality and increasing the market competitiveness of the product to meet the market demand are important development directions of the electric vehicle industry and even the motor industry.

Present electric motor car box is unreasonable because gear layout, causes the volume grow, and the material is extravagant, and the drive ratio is little (low-speed 1, 28, high-speed 1) leads to low-speed condition moment of torsion little, and the high-speed condition is run slowly, and box casing weight is big, and the cost is high.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a redesign gear overall arrangement, the box is little, light in weight, the big novel variable speed electric motor car gear shifting box of moment of torsion.

In order to realize the above functions, the utility model discloses the technical scheme who takes as follows: the utility model provides a novel electric motor car gear shifting box that has variable speed, includes left box, motor housing, driving motor, right box, rear axle body, variable speed drive assembly and fan housing, left side box and right box pass through bolted connection, the rear axle body passes through the bolt and is connected with left box and right box, variable speed drive assembly is rotatable to be located in the space that left box and right box formed, motor housing is fixed continuous with right box, driving motor is fixed to be located in the motor housing, the fan housing is fixed continuous with motor housing, variable speed drive assembly links to each other with driving motor is fixed, variable speed drive assembly is rotatable to run through right box and motor housing and the output end of driving motor is fixed to be continuous, and the design of rear axle body makes left box and right box not receive the load weight of car, extension fixture's life, and current car's rear axle is the components of a whole that can function independently, and they are attached to the box respectively, and the box has received the weight of whole car, damages easily.

The variable-speed transmission assembly comprises a motor shaft, a first double-chain gear, a second double-chain gear, high-speed gears, a sliding ring, a shifting fork, a compression spring, low-speed gears, spline shaft gears, large gears and a differential shell, wherein the motor shaft is fixedly connected with the output end of the driving motor, the motor shaft is meshed with the first double-chain gear, the second double-chain gear is fixedly connected with the first double-chain gear, the second double-chain gear, the spline shaft gears and the differential shell are respectively and rotatably connected with the left box body, the large gears are fixedly sleeved on the outer side of the differential shell and meshed with the spline shaft gears, the sliding ring is slidably clamped on the spline shaft gears, the high-speed gears and the low-speed gears are respectively and fixedly connected with the sliding ring, the compression spring is fixedly connected with the shifting fork, the compression spring drives the shifting fork to move, the high-speed gears and the low-speed gears are driven to move through the sliding ring, when the high-speed gears are meshed with the first double-chain gear, the low-speed gears idle rotate, the high-speed gears are at the moment, and when the low-speed gears are meshed with the second double-chain gears.

Preferably, the slip ring is provided with a first protrusion, the high-speed teeth and the low-speed teeth are provided with grooves, and a second protrusion matched with the first protrusion is arranged in each groove, so that secondary punching and one-step forming are not needed, and the processing is convenient.

Preferably, the tolerance difference between the first bulge and the second bulge on the circumference is 90 degrees, the gear shifting is convenient, the vehicle cannot shake, and the noise is low.

Preferably, four pits are symmetrically arranged on the groove of the low-speed tooth, so that the interference of burrs at the protruding point of the slip ring is avoided, and the first protrusion of the slip ring is easily contacted with the second protrusion of the low-speed tooth.

Preferably, a fan is fixedly arranged on the motor shaft, and the fan is rotatably arranged between the package and the motor shell and can cool the driving motor.

Preferably, the annular array on the fan housing is provided with a plurality of groups of reinforcing ribs for increasing the strength of the fan housing.

Preferably, a controller is fixedly arranged in the left box body.

The utility model adopts the above structure to gain beneficial effect as follows: the utility model provides a novel have variable speed electric motor car gear shifting box, easy operation, compact structure, reasonable in design arranges the gear and optimizes, and the box volume that makes is minimum, and the moment of torsion is big during the low-speed, speed piece during the high-speed, and stability is high, and the car is difficult for trembling, and vehicle noise is little.

Drawings

Fig. 1 is a perspective view of a novel gear shifting box of an electric vehicle with variable speed provided by the present invention;

FIG. 2 is an exploded view of the shift housing of the novel electric vehicle with variable speed provided by the present invention;

fig. 3 is a perspective view of the variable transmission assembly of the novel variable electric vehicle gear shifting box body provided by the present invention;

FIG. 4 is a structural diagram of a slip ring of a shift housing of the novel variable speed electric vehicle provided by the present invention;

FIG. 5 is a structural diagram of the high speed teeth of the slip ring of the novel variable speed electric vehicle shift housing provided by the present invention;

fig. 6 is a structural diagram of the controller-less version of the novel gear shifting box of the electric vehicle with variable speed provided by the present invention.

The device comprises a left box body 1, a right box body 2, a motor shell 4, a right box body 5, a rear axle body 7, a variable speed transmission assembly 8, a fan cover 9, a motor shaft 10, a first double-chain gear 11, a second double-chain gear 12, a high-speed gear 13, a sliding ring 14, a shifting fork 15, a compression spring 16, a low-speed gear 17, a spline shaft gear 18, a large gear 19, a differential shell 20, a first bulge 21, a groove 23, a second bulge 25, a fan 26 and a controller.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships 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 and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1-2, the utility model provides a novel there is variable speed electric motor car gear shifting box, including left box 1, motor housing 2, driving motor, right box 4, the rear axle body 5, variable speed drive subassembly 7 and fan housing 8, left side box 1 and right box 4 pass through bolted connection, rear axle body 5 passes through the bolt and is connected with left box 1 and right box 4, variable speed drive subassembly 7 is rotatable to be located in the space that left box 1 and right box 4 formed, motor housing 2 links to each other with right box 4 is fixed, driving motor is fixed to be located in motor housing 2, fan housing 8 links to each other with motor housing 2 is fixed, variable speed drive subassembly 7 links to each other with driving motor is fixed, variable speed drive subassembly 7 is rotatable to run through right box 4 and motor housing 2 and is fixed to link to each other with driving motor's output, the fixed fan 25 that is equipped with on the motor shaft 9, fan 25 is rotatable to be located between encapsulation and the motor housing 2, annular array is equipped with a plurality of groups strengthening rib on the fan housing 8, left side box 1 internal fixation is equipped with controller 26.

As shown in fig. 3, the variable speed transmission assembly 7 includes a motor shaft 9, a first double-chain gear 10, a second double-chain gear 11, a high-speed gear 12, a slip ring 13, a shift fork 14, a compression spring 15, a low-speed gear 16, a spline shaft gear 17, a large gear 18 and a differential housing 19, the motor shaft 9 is fixedly connected with an output end of the driving motor, the motor shaft 9 is engaged with the first double-chain gear 10, the second double-chain gear 11 is fixedly connected with the first double-chain gear 10, the second double-chain gear 11, the spline shaft gear 17 and the differential housing 19 are respectively rotatably connected with the left box body 1, the large gear 18 is fixedly sleeved on an outer side of the differential housing 19, the large gear 18 is engaged with the spline shaft gear 17, the slip ring 13 can be slidably engaged with the spline shaft gear 17, the high-speed gear 12 and the low-speed gear 16 are respectively fixedly connected with the slip ring 13, the shift fork 14 is rotatably connected with the slip ring 13, and the compression spring 15 is fixedly connected with the shift fork 14.

As shown in fig. 4 and 5, the slip ring 13 is provided with a first protrusion 20, the high-speed teeth 12 and the low-speed teeth 16 are provided with grooves 21, a second protrusion 23 matched with the first protrusion 20 is arranged in the groove 21, the difference between the first protrusion 20 and the second protrusion is 90 degrees in tolerance on the circumference, and four pits are symmetrically arranged on the grooves 21 of the low-speed teeth 16.

When the device is used specifically, the controller version and the non-controller version are respectively shown in fig. 1 and fig. 6, a controller bin is added in the left box body 1 of the controlled version to place a controller 26, and the controller and the gear shifting box body are integrated. This technical scheme's motor shaft 9 is on the left side, it is on the right on the market at present, and motor shaft 9 overlength must more a bearing, motor shaft 9 bears badly can not change, be greater than the inner circle because of the off-axial circle of bearing, and motor shaft 9 in the practicality can be changed at any time, differential shell 19 takes the stay, it does not take to have on the market now, driving motor's motor end cover is the sphere and inwards recess, intensity is good, can not produce and shake altogether, controller 26 is inside the motor, the cable conductor of motor has been saved, three group item lines of motor are fixed and connect, and 5 hall signal line also connect, controller 26 only connects positive negative pole assembly simply and is difficult for makeing mistakes. The compression spring 15 drives the shifting fork 14 to move, the slip ring 13 drives the high-speed gear 12 and the low-speed gear 16 to move, the motor shaft 9 transmits the kinetic energy of the driving motor to the first double-sprocket 10, the first double-sprocket 10 drives the second double-sprocket 11 to rotate, when the high-speed gear 12 is meshed with the first double-sprocket 10, the low-speed gear 16 idles, the high-speed gear 12 drives the spline shaft gear 17 to rotate, the spline shaft gear 17 drives the large gear 18 to rotate, so that the differential shell 19 drives the wheel to rotate at a high speed, when the low-speed gear 16 is meshed with the second double-sprocket 11, the high-speed gear 12 idles, the low-speed gear 16 drives the spline shaft gear 17 to rotate, and the spline shaft gear 17 drives the large gear 18 to rotate, so that the differential shell 19 drives the wheel to rotate and is at a low speed. The sliding ring 13 is provided with the first bulge 20 corresponding to the second bulge 23 in the groove 21 of the high-speed tooth 12, so that the insertion is convenient, the gear shifting is convenient, the vehicle cannot shake, and the noise is low. The pits of the low-speed teeth 16 successfully avoid the interference of burrs at the protruding points of the slip ring 13, so that the first protrusions 20 of the slip ring 13 can be easily contacted with the first protrusions 20 of the low-speed teeth 16.

The present invention and the embodiments thereof have been described above, but the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should understand that they should not be limited to the embodiments described above, and that they can design the similar structure and embodiments without departing from the spirit of the invention.

Claims

1. The utility model provides a novel have variable speed electric motor car gear shifting box which characterized in that: including left box, motor housing, driving motor, right box, rear axle body, variable speed drive subassembly and fan housing, left side box and right box pass through bolted connection, the rear axle body passes through bolt and left box and right box connection, variable speed drive subassembly is rotatable to be located in the space that left box and right box formed, motor housing is fixed continuous with right box, driving motor is fixed to be located in the motor housing, the fan housing is fixed continuous with motor housing, variable speed drive subassembly links to each other with driving motor is fixed, variable speed drive subassembly is rotatable to run through right box and motor housing and the output of driving motor is fixed continuous.

2. The novel variable-speed electric vehicle gear shifting box body as claimed in claim 1, characterized in that: the variable-speed transmission assembly comprises a motor shaft, a first double-chain gear, a second double-chain gear, high-speed teeth, a sliding ring, a shifting fork, a compression spring, low-speed teeth, spline shaft teeth, a large tooth and a differential shell, wherein the motor shaft is fixedly connected with the output end of the driving motor, the motor shaft is meshed with the first double-chain gear, the second double-chain gear is fixedly connected with the first double-chain gear, the second double-chain gear, the spline shaft teeth and the differential shell are respectively and rotatably connected with the left box body, the large tooth is fixedly sleeved on the outer side of the differential shell, the large tooth is meshed with the spline shaft teeth, the sliding ring is slidably clamped on the spline shaft teeth, the high-speed teeth and the low-speed teeth are respectively and fixedly connected with the sliding ring, the shifting fork is rotatably connected with the sliding ring, and the compression spring is fixedly connected with the shifting fork.

3. The novel variable-speed electric vehicle gear shifting box body as claimed in claim 2, characterized in that: the slip ring is provided with a first bulge, the high-speed teeth and the low-speed teeth are provided with grooves, and second bulges matched with the first bulges are arranged in the grooves.

4. The novel variable speed electric vehicle gear shifting box body according to claim 3, characterized in that: the tolerance of the first projection and the second projection on the circumference is different by 90 degrees.

5. The novel gear shifting box body of the electric vehicle with the variable speed as claimed in claim 4, characterized in that: four pits are symmetrically arranged on the groove of the low-speed tooth.

6. The novel variable speed electric vehicle gear shifting box body according to claim 5, characterized in that: the motor shaft is fixedly provided with a fan, and the fan is rotatably arranged between the package and the motor shell.

7. The novel variable speed electric vehicle gear shifting box body according to claim 6, characterized in that: the annular array is provided with a plurality of groups of reinforcing ribs on the fan cover.

8. The novel variable speed electric vehicle gear shifting box body according to claim 7, characterized in that: and the differential shell is provided with a locking sheet.

9. The novel variable speed electric vehicle gear shifting box body according to claim 8, characterized in that: and a controller is fixedly arranged in the left box body.