Miniature two-wheel electric vehicle driving system

Abstract

The utility model discloses a miniature two-wheel electric vehicle driving system which comprises a motor shell connected with a vehicle frame, a motor end cover is arranged at one end of the motor shell, a speed reducer shell is arranged at the other end of the motor shell, a stator, a rotor and a rotating shaft are arranged in the motor shell, a speed reducing mechanism and an output shaft are arranged in the speed reducer shell, and the output shaft is connected with the speed reducing mechanism. The output shaft extends out of the speed reducer shell and penetrates through the hub to be rotationally connected with a frame, a brake hub cover is arranged on the speed reducer shell, a brake shoe support is arranged on the brake hub cover, a brake shoe assembly corresponding to the hub is arranged on the brake shoe support, and a brake rocker arm connected with a brake is arranged on the brake shoe assembly. The brake rocker arm is rotationally connected with the brake hub cover, the speed reducer shell and the brake hub cover are integrated, the fixed gear ring, the speed reducer shell and the brake hub cover are arranged into a whole, and the output shaft and the planetary speed reducer support are integrally designed, so that the assembly size is reduced, the structural rigidity is improved, and the assembly process is optimized.

Description

Technical Field

[0001] This utility model belongs to the field of motor drive technology, and more specifically relates to a drive system for a micro two-wheeled electric vehicle. Background Technology

[0002] With social development, the demand for two-wheeled electric vehicles is increasing, which requires continuous innovation and development of two-wheeled electric vehicles. This includes increasingly higher requirements for vehicle weight, range, and safety. Currently, most two-wheeled electric vehicle drive systems on the market are independent and lack integration. As a result, the system weight is large, and the efficiency of coordination between components needs to be improved. Too many connections not only increase manufacturing costs, reduce safety, but also limit the performance of the entire vehicle. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a micro two-wheeled electric vehicle drive system.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a micro two-wheeled electric vehicle drive system, including a motor housing connected to a vehicle frame, a motor end cover at one end of the motor housing, and a reducer housing at the other end. The motor housing contains a stator, a rotor, and a rotating shaft. The reducer housing contains a reduction mechanism and an output shaft. The output shaft is connected to the reduction mechanism, extends out of the reducer housing, passes through a wheel hub, and is rotatably connected to the vehicle frame. A brake hub cover is provided on the reducer housing, a brake shoe support is provided on the brake hub cover, a brake shoe assembly corresponding to the wheel hub is provided on the brake shoe support, and a brake rocker arm connected to the brake is provided on the brake shoe assembly. The brake rocker arm is rotatably connected to the brake hub cover, and the reducer housing and the brake hub cover are integrally formed.

[0005] Furthermore, the reduction mechanism includes a central gear located on the rotating shaft, a fixed gear ring located on the inner wall of the reducer housing, and three planetary gears located between the central gear and the fixed gear ring, and the three planetary gears are rotatably connected to the output shaft.

[0006] Furthermore, a drive bracket is provided on the output shaft, and three gear shafts corresponding to planetary gears are provided on the drive bracket, with the planetary gears rotatably connected to the gear shafts.

[0007] Furthermore, the gear shaft is provided with a lubrication cavity that is open at both ends, and the inner wall of the lubrication cavity is provided with a plurality of lubrication holes. The inner wall of the planetary gear in contact with the gear shaft is provided with a spiral lubrication groove, and the lubrication holes are connected to the lubrication groove.

[0008] Furthermore, one end of the gear shaft is fixedly connected to the drive bracket, and the other end passes through the planetary gear and is provided with a retaining ring.

[0009] Furthermore, a sprocket is provided at one end of the output shaft that passes through the hub.

[0010] Furthermore, the output shaft is threadedly connected to the hub, and spacers are provided on the output shaft at both ends of the hub.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: the rotating shaft inside the motor housing transmits power to the output shaft through the reduction mechanism inside the reducer housing, and then the output shaft drives the wheel hub to rotate, thereby driving the electric vehicle. The motor mechanism, reducer, and output shaft of this drive system are tightly coupled, reducing energy loss in the transmission system. The fixed gear ring, reducer housing, and brake hub cover are integrated into one unit, and the output shaft and planetary reducer bracket are integrated into one unit, reducing the overall size, improving structural rigidity, and optimizing the assembly process. The two-wheeled vehicle equipped with this drive has high integration and low manufacturing, use, and maintenance costs. In addition, a human-powered sprocket can be set on the drive shaft according to user needs, expanding the scope of application. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the drive system of the miniature two-wheeled electric vehicle of this utility model;

[0013] Figure 2 This is a schematic diagram of the motor and reducer components in the drive system of the miniature two-wheeled electric vehicle of this utility model;

[0014] Figure 3 This is a schematic diagram of the wheel hub portion in the drive system of the miniature two-wheeled electric vehicle of this utility model.

[0015] Reference numerals: 1. Motor housing; 2. Motor end cover; 3. Reducer housing; 4. Stator; 5. Rotor; 6. Shaft; 7. Output shaft; 8. Brake hub cover; 9. Brake shoe support; 10. Brake shoe assembly; 11. Brake rocker arm; 12. Center gear; 13. Fixed gear ring; 14. Planetary gear; 15. Drive bracket; 16. Gear shaft; 17. Lubrication cavity; 18. Lubrication hole; 19. Lubrication groove; 20. Retaining ring; 21. Sprocket; 22. Spacer; 23. Hub. Detailed Implementation

[0016] In the description of this utility model, it should be noted that the directional terms such as "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0017] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" or "a number" means two or more, unless otherwise explicitly specified.

[0018] Reference Figures 1 to 3 The present invention will be further described below.

[0019] A drive system for a micro two-wheeled electric vehicle includes a motor housing 1 connected to a frame. One end of the motor housing 1 is provided with a motor end cover 2, and the other end is provided with a reducer housing 3. The motor housing 1 contains a stator 4, a rotor 5, and a rotating shaft 6. The reducer housing 3 contains a reduction mechanism and an output shaft 7. The output shaft 7 is connected to the reduction mechanism, extends out of the reducer housing 3, passes through a wheel hub 23, and is rotatably connected to the frame. The reducer housing 3 is provided with a brake hub cover 8, and the brake hub cover 8 is provided with a brake shoe support 9. The brake shoe support 9 is provided with a brake shoe assembly 10 corresponding to the wheel hub 23. The brake shoe assembly 10 is provided with a brake rocker arm 11 connected to the brake. The brake rocker arm 11 is rotatably connected to the brake hub cover 8. The reducer housing 3 and the brake hub cover 8 are integral.

[0020] like Figure 2 As shown, in this preferred embodiment, the reduction mechanism includes a central gear 12 located on the rotating shaft 6, a fixed gear ring 13 located on the inner wall of the reducer housing 3, and three planetary gears 14 located between the central gear 12 and the fixed gear ring 13, and the three planetary gears 14 are rotatably connected to the output shaft 7.

[0021] like Figure 2As shown in this example, preferably, the output shaft 7 is provided with a drive bracket 15, and the drive bracket 15 is provided with three gear shafts 16 corresponding to the planetary gears 14, and the planetary gears 14 are rotatably connected to the gear shafts 16.

[0022] like Figure 2 As shown, in this preferred embodiment, the gear shaft 16 is provided with a lubrication cavity 17 that is open at both ends, and a plurality of lubrication holes 18 are provided on the inner wall of the lubrication cavity 17. The planetary gear 14 is provided with a spiral lubrication groove 19 on the inner wall of the gear shaft 16, and the lubrication holes 18 are connected to the lubrication groove 19.

[0023] like Figure 2 As shown in this example, preferably, one end of the gear shaft 16 is fixedly connected to the drive bracket 15, and the other end passes through the planetary gear 14 and is provided with a retaining ring 20.

[0024] like Figure 3 As shown in this example, preferably, a sprocket 21 is provided at one end of the output shaft 7 that passes through the hub 23.

[0025] like Figure 3 As shown, in this example, preferably, the output shaft 7 is threadedly connected to the hub 23, and the output shaft 7 is provided with spacers 22 located at both ends of the hub 23.

[0026] like Figures 1 to 3 As shown,

[0027] The rotating shaft 6 inside the motor housing 1 rotates, driving the central gear 12 to rotate, which in turn drives the three planetary gears 14 to rotate, thereby driving the output shaft 7 to rotate, causing the wheel hub 23 to rotate, thus driving the electric vehicle. In this drive system, the motor mechanism, reducer, and output shaft 7 are tightly coupled, reducing energy loss in the transmission system. The fixed gear ring 13, reducer housing 3 and brake hub cover 8 are integrated, and the output shaft 7 and planetary reducer bracket are integrated, reducing the overall size, improving structural rigidity, and optimizing the assembly process. The two-wheeled vehicle equipped with this drive has high integration and low manufacturing, use, and maintenance costs. In addition, a human-powered sprocket 21 can be set on the drive shaft according to user needs, expanding the scope of use.

[0028] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A drive system for a miniature two-wheeled electric vehicle, characterized in that: The system includes a motor housing connected to the vehicle frame. One end of the motor housing is provided with a motor end cover, and the other end is provided with a reducer housing. The motor housing contains a stator, a rotor, and a rotating shaft. The reducer housing contains a reduction mechanism and an output shaft. The output shaft is connected to the reduction mechanism, extends out of the reducer housing, passes through the wheel hub, and is rotatably connected to the vehicle frame. The reducer housing is provided with a brake hub cover, and the brake hub cover is provided with a brake shoe support. The brake shoe support is provided with a brake shoe assembly corresponding to the wheel hub. The brake shoe assembly is provided with a brake rocker arm connected to the brake. The brake rocker arm is rotatably connected to the brake hub cover. The reducer housing and the brake hub cover are integral.

2. The micro two-wheeled electric vehicle drive system according to claim 1, characterized in that: The reduction mechanism includes a central gear on the rotating shaft, a fixed gear ring on the inner wall of the reducer housing, and three planetary gears located between the central gear and the fixed gear ring, with the three planetary gears rotatably connected to the output shaft.

3. The micro two-wheeled electric vehicle drive system according to claim 2, characterized in that: The output shaft is provided with a drive bracket, and the drive bracket is provided with three gear shafts corresponding to planetary gears. The planetary gears are rotatably connected to the gear shafts.

4. The micro two-wheeled electric vehicle drive system according to claim 3, characterized in that: The gear shaft has a lubrication cavity that is open at both ends. The inner wall of the lubrication cavity has several lubrication holes. The inner wall of the planetary gear that contacts the gear shaft has a spiral lubrication groove. The lubrication holes are connected to the lubrication groove.

5. The micro two-wheeled electric vehicle drive system according to claim 4, characterized in that: One end of the gear shaft is fixedly connected to the drive bracket, and the other end passes through the planetary gear and is provided with a retaining ring.

6. The micro two-wheeled electric vehicle drive system according to claim 1, characterized in that: A sprocket is provided at one end of the output shaft that passes through the hub.

7. The micro two-wheeled electric vehicle drive system according to claim 1, characterized in that: The output shaft is threadedly connected to the hub, and spacers are provided on the output shaft at both ends of the hub.

Images