Two-in-one electric motorcycle motor with gear reduction function

Abstract

The utility model discloses a two-in-one electric motorcycle motor with a gear reduction function, and relates to the field of electric motorcycle motors. According to the technical scheme, the machine comprises a machine shell, a machine core assembly and a gear reduction assembly. The machine core assembly comprises a machine core shaft; the speed reduction assembly comprises a driving gear integrally formed at the end of the machine core shaft and a driven gear meshed with the driving gear. An output shaft extending out of the machine shell is integrally formed on the driven gear. The structure of the motor is simplified, the size and weight of the motor are reduced, and the motor is convenient to assemble.

Description

Technical Field

[0001] The utility model relates to the field of electric motorcycle motors, and more specifically, to a two-in-one electric motorcycle motor with gear reduction. Background Art

[0002] With the rapid development of the electric motorcycle industry in recent years, the demand for electric motorcycles at home and abroad has been increasing. The driving system of electric motorcycles mainly includes three major parts: battery, electronic control, and motor. Among the three-electric systems currently used in electric motorcycles on the market, most motors use mid-mounted direct-drive motors, wheel-side side-mounted motors, and hub motors.

[0003] The existing Chinese patent with publication number CN117458791A discloses a mid-mounted motor for high-speed electric motorcycles. The mid-mounted motor is an integrated motor and reducer. The motor part is a permanent magnet synchronous motor, and the reducer part is a two-stage parallel shaft gear transmission; and the gears of the reducer part are respectively mounted on two parallel shafts.

[0004] However, the mid-mounted motor in the above patent still has problems such as a large number of parts, a complex structure and low assembly efficiency. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a two-in-one electric motorcycle motor with gear reduction, which has the advantages of simplified structure and convenient assembly.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A two-in-one electric motorcycle motor with gear reduction comprises a housing, a movement assembly and a gear reduction assembly; the movement assembly comprises a movement shaft; the reduction assembly comprises a driving gear integrally formed at the end of the movement shaft, and a driven gear meshing with the driving gear; the driven gear is integrally formed with an output shaft extending from the housing.

[0008] Furthermore, the casing includes a cylinder, a first end cover and a second end cover respectively arranged at both ends of the cylinder, and a third end cover connected to the first end cover; a movement cavity cooperating with the movement assembly is formed between the cylinder, the first end cover and the second end cover, and a reduction cavity cooperating with the gear reduction assembly is formed between the first end cover and the third end cover.

[0009] Furthermore, the output shaft extends out of the third end cover.

[0010] Furthermore, the third end cover and the cylinder are respectively located on both sides of the first end cover.

[0011] Furthermore, the movement shaft passes through the first end cover and then extends into the speed reduction chamber, and a driving gear is integrally formed on the extending end.

[0012] Furthermore, one end of the movement shaft away from the driving gear extends inwardly to form a weight-reducing shaft hole, and a plug is embedded at the opening of the weight-reducing shaft hole.

[0013] Furthermore, a vent hole connecting the weight-reducing shaft hole and the movement cavity is provided on the movement shaft.

[0014] Furthermore, the movement assembly includes a rotor sleeved on the movement shaft, and the outer side wall of the movement shaft is provided with a limiting boss that cooperates with the rotor; the vent hole runs through the connection between the limiting boss and the movement shaft.

[0015] Furthermore, a limiting groove communicating with the vent hole is provided on the movement shaft, and a limiting key cooperating with the limiting groove is provided on the inner side wall of the rotor.

[0016] Furthermore, a sealing ring is provided between the limiting boss and the first end cover, and an axial gap communicating with the vent hole is formed between the sealing ring and the rotor.

[0017] In summary, the utility model has the following beneficial effects:

[0018] 1. The torque of the movement assembly is transmitted to the output shaft through the movement shaft, driving gear and driven gear, which is conducive to increasing the reduction ratio and the maximum torque on the wheel, while reducing the output torque of the movement, reducing the acceleration time of the whole vehicle and increasing the explosive power;

[0019] 2. The core shaft and the driving gear are integrally formed, and the driven gear and the output shaft are integrally formed, which can improve the structural strength, reduce the number of parts and installation procedures, reduce the manufacturing difficulty and cost, and is conducive to the lightweight of the motor;

[0020] 3. The two sides of the first end cover form a movement cavity and a deceleration cavity respectively, which is beneficial to reduce the number of parts of the casing, reduce the volume and weight, improve the structural strength, optimize the axial size, and reduce assembly errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The structure of the two-in-one electric motor with gear reduction in the embodiment is shown in FIG. Figure 1 ;

[0022] Figure 2 The structure of the two-in-one electric motor with gear reduction in the embodiment is shown in FIG. Figure 2 ;

[0023] Figure 3 The structure of the two-in-one electric motor with gear reduction in the embodiment is shown in FIG. Figure 3 ;

[0024] Figure 4It is a schematic diagram of the structure of the movement shaft in the embodiment.

[0025] In the figure: 11, cylinder; 12, first end cover; 13, second end cover; 14, third end cover; 2, movement shaft; 21, limiting boss; 22, limiting groove; 23, weight-reducing shaft hole; 24, vent; 25, driving gear; 3, rotor; 4, stator; 5, plug; 6, driven gear; 61, output shaft. DETAILED DESCRIPTION

[0026] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0027] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention. Example

[0028] A two-in-one electric motorcycle motor with gear reduction, specifically, the motor in this embodiment is a mid-mounted reduction motor used in an electric motorcycle; Figures 1 to 4 The motor in this embodiment includes a casing, a movement assembly and a gear reduction assembly; the movement assembly includes a movement shaft 2; the reduction assembly includes a driving gear 25 integrally formed at the end of the movement shaft 2, and a driven gear 6 meshing with the driving gear 25; the driven gear 6 is integrally formed with an output shaft 61 extending from the casing; in this embodiment, the torque of the movement assembly is transmitted to the output shaft 61 via the movement shaft 2, the driving gear 25 and the driven gear 6, which is beneficial to increase the reduction ratio, increase the maximum torque on the wheel, and reduce the movement output torque, reduce the acceleration time of the whole vehicle, and increase the explosive power; at the same time, in this embodiment, the movement shaft 2 and the driving gear 25 are integrally formed, and the driven gear 6 and the output shaft 61 are integrally formed, which can improve the structural strength, reduce the number of parts and installation procedures, reduce the manufacturing difficulty and cost, and is beneficial to the lightweight of the motor.

[0029] Reference Figures 1 to 4 Specifically, in this embodiment, the casing includes a cylinder 11, a first end cover 12 and a second end cover 13 respectively arranged at both ends of the cylinder 11, and a third end cover 14 connected to the first end cover 12; a movement cavity that cooperates with the movement assembly is formed between the cylinder 11, the first end cover 12 and the second end cover 13; the third end cover 14 and the cylinder 11 are respectively located on both sides of the first end cover 12, and a reduction cavity that cooperates with the gear reduction assembly is formed between the first end cover 12 and the third end cover 14; in this embodiment, a movement cavity and a reduction cavity are respectively formed on both sides of the first end cover 12, which is beneficial to reducing the number of parts of the casing, reducing volume and weight, improving structural strength, optimizing axial dimensions, and reducing assembly errors.

[0030] Reference Figures 1 to 4 Specifically, in this embodiment, the movement shaft 2 passes through the first end cover 12 and then extends into the deceleration chamber, and a driving gear 25 is integrally formed on the extending end, so that the driving gear 25 is located in the deceleration chamber; wherein, bearings are respectively arranged between the movement shaft 2 and the first end cover 12 and the second end cover 13, so that the movement shaft 2 is rollingly supported on the housing; the driven gear 6 includes a shaft portion and a toothed disc portion, and bearings are respectively arranged between the shaft portion and the first end cover 12 and the third end cover 14; an output shaft 61 extending from the third end cover 14 is integrally formed at one end of the shaft portion, and the output shaft 61 is used to output the motor torque; the output shaft 61 extends from the third end cover 14, which is conducive to simplifying the structure and reducing the weight of the motor.

[0031] Reference Figures 1 to 4 Specifically, in this embodiment, one end of the movement shaft 2 away from the driving gear 25 extends inward to form a weight-reducing shaft hole 23, thereby reducing the weight of the movement shaft, which is beneficial to the lightweight of the motor; one end of the weight-reducing shaft hole 23 is closed and the other end is open, and a plug 5 is embedded in the opening of the weight-reducing shaft hole 23; the plug 5 is used to support the open end of the movement shaft 2, which is beneficial to improve the structural strength of the movement shaft 2; specifically, in this embodiment, the plug 5 and the movement shaft 2 are threadedly connected, which is convenient for assembly and has good connection stability.

[0032] Reference Figures 1 to 4 Preferably, a vent hole 24 connecting the weight-reducing shaft hole 23 and the movement cavity is provided on the movement shaft 2, which is conducive to the balance of the internal and external air pressures of the movement shaft 2; in this embodiment, the movement assembly includes a rotor 3 sleeved on the movement shaft 2, and a stator 4 arranged on the inner side wall of the cylinder 11; the outer side wall of the movement shaft 2 is provided with a limiting boss 21 cooperating with the rotor 3, and the rotor 3 contacts the limiting boss 21 to achieve axial limiting; in this embodiment, the vent hole 24 runs through the connection between the limiting boss 21 and the movement shaft 2, that is, a part of the vent hole 24 passes through the movement shaft 2, and the other part passes through the limiting boss 21; A sealing ring is arranged between the limiting boss 21 and the first end cover 12, and an axial gap connected to the air vent 24 is formed between the sealing ring and the rotor 3; this is conducive to avoiding obstruction of the rotor 3 and the sealing ring, so that the air vent 24 is connected to the movement cavity; a limiting groove 22 connected to the air vent 24 is arranged on the movement shaft 2, and a limiting key (not shown in the drawings) cooperating with the limiting groove 22 is arranged on the inner side wall of the rotor 3; the limiting key cooperates with the limiting groove 22 to realize the circumferential limitation between the rotor 3 and the movement shaft 2; the limiting groove 22 is connected to the air vent 24, which can facilitate processing and improve the structural strength of the movement shaft.

Claims

1. A two-in-one electric motor with gear reduction, characterized in that: It includes a casing, a movement assembly and a gear reduction assembly; the movement assembly includes a movement shaft; the reduction assembly includes a driving gear integrally formed at the end of the movement shaft, and a driven gear meshing with the driving gear; the driven gear is integrally formed with an output shaft extending from the casing.

2. The two-in-one electric motorcycle motor with gear reduction according to claim 1 is characterized in that: The casing includes a cylinder, a first end cover and a second end cover respectively arranged at both ends of the cylinder, and a third end cover connected to the first end cover; a movement cavity cooperating with the movement assembly is formed between the cylinder, the first end cover and the second end cover, and a reduction cavity cooperating with the gear reduction assembly is formed between the first end cover and the third end cover.

3. The two-in-one electric motorcycle motor with gear reduction according to claim 2 is characterized in that: The output shaft extends out of the third end cover.

4. The two-in-one electric motorcycle motor with gear reduction according to claim 2 is characterized in that: The third end cover and the cylinder are respectively located on both sides of the first end cover.

5. The two-in-one electric motorcycle motor with gear reduction according to claim 2 is characterized in that: The core shaft passes through the first end cover and then extends into the speed reduction chamber, and a driving gear is integrally formed on the extending end.

6. The two-in-one electric motorcycle motor with gear reduction according to claim 1, characterized in that: One end of the movement shaft away from the driving gear extends inwardly to form a weight-reducing shaft hole, and a plug is embedded at the opening of the weight-reducing shaft hole.

7. The two-in-one electric motorcycle motor with gear reduction according to claim 6, characterized in that: The movement shaft is provided with an air vent which connects the weight-reducing shaft hole and the movement cavity.

8. The two-in-one electric motorcycle motor with gear reduction according to claim 7, characterized in that: The movement assembly comprises a rotor sleeved on a movement shaft, and the outer side wall of the movement shaft is provided with a limiting boss matched with the rotor; the vent hole passes through the connection between the limiting boss and the movement shaft.

9. The two-in-one electric motorcycle motor with gear reduction according to claim 8, characterized in that: The movement shaft is provided with a limiting groove communicated with the vent hole, and the inner side wall of the rotor is provided with a limiting key matched with the limiting groove.

10. The two-in-one electric motorcycle motor with gear reduction according to claim 8, characterized in that: A sealing ring is arranged between the limiting boss and the first end cover, and an axial gap communicating with the vent hole is formed between the sealing ring and the rotor.

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