CN220221046U

CN220221046U - Wheel rim motor

Info

Publication number: CN220221046U
Application number: CN202321971606.0U
Authority: CN
Inventors: 林胜钧
Original assignee: Taizhou Huangyan Minglong Technology Co ltd
Current assignee: Taizhou Huangyan Minglong Technology Co ltd
Priority date: 2023-07-25
Filing date: 2023-07-25
Publication date: 2023-12-22
Anticipated expiration: 2033-07-25

Abstract

The utility model relates to a wheel motor, belonging to the technical field of two-wheel vehicle motors. The motor comprises a motor shell and a hub, wherein a motor rotor is arranged in the shell, a motor shaft is arranged at the center of the motor rotor, a central shaft is arranged in the motor shaft, a first-stage input gear is arranged on the motor shaft, a first bearing chamber is arranged on the outer end face of the shell, an intermediate gear shaft is arranged in the first bearing chamber, a first-stage intermediate gear and a second-stage intermediate gear are arranged on the intermediate gear shaft, the first-stage intermediate gear is meshed with the first-stage input gear, a rotating shaft is arranged on the central shaft, a second-stage output gear is arranged on the rotating shaft, the second-stage output gear is meshed with the second-stage intermediate gear, and the rotating shaft is fixedly connected with the hub; in the scheme, the internal structure of the motor is improved, the transmission structure between the rotor and the rotating shaft is optimized, the structure is simpler, the production efficiency is improved, and the production cost is reduced.

Description

Wheel rim motor

Technical Field

The utility model belongs to the technical field of motor rotors of two-wheel vehicles, and relates to a wheel-side motor.

Background

The earliest two-wheel vehicle is a bicycle, the speed of the bicycle can not meet the demands of people along with the continuous development of life of people, then an engine is arranged on the bicycle, early motorcycles are also produced, along with the popularization of motor technology, electric bicycles and electric motorcycles gradually stand out from the two-wheel vehicle and are popularized rapidly, in order to enable a motor to drive a hub to rotate better, a multi-stage variable speed motor exists in the prior art, the motor is arranged on the inner side of the hub, the power of the motor is directly transmitted to the hub through a coaxial transmission output mode, and the motor can be switched according to different terrains.

However, the variable speed motor in the prior art still has some defects: the internal structure of the variable speed motor is complex, the number of parts is large, the production efficiency is low, the cost is high, and the motor cannot be used in a conventional electric two-wheeled vehicle, so that the motor is not beneficial to wide application and popularization in the market.

Disclosure of Invention

The utility model aims at solving the problems existing in the prior art, and provides a wheel motor, which aims at solving the technical problems that: how to optimize the internal structure of the motor and reduce the production cost of the motor.

The aim of the utility model can be achieved by the following technical scheme: the utility model provides a wheel limit motor, includes motor housing and wheel hub, the inside motor rotor that is equipped with of casing, motor rotor's center is equipped with the motor shaft, the one end of motor shaft extends to the casing outside, the inside of motor shaft is equipped with the axis, axis one end is worn out from the casing, and the other end extends towards the outside of motor shaft, the motor shaft stretches out the position of casing and is equipped with one-level input gear, the casing outside terminal surface is equipped with first bearing room, be equipped with the intermediate gear shaft in the first bearing room, be equipped with one-level intermediate gear and second grade intermediate gear on the intermediate gear shaft, one-level intermediate gear meshes with one-level input gear, epaxial being equipped with the axis of rotation, be equipped with second grade output gear in the axis of rotation, second grade output gear meshes with second grade intermediate gear, the axis of rotation links firmly with wheel hub.

In the scheme, as the center shaft passes through the center of the motor shaft, when the motor rotor in the shell drives the motor shaft to rotate, the motor shaft can rotate around the center shaft, as the first-stage intermediate gear on the intermediate gear shaft is meshed with the first-stage input gear on the motor shaft, the rotating motor shaft can rotate the intermediate gear shaft in the first bearing chamber, as the second-stage intermediate gear on the intermediate gear shaft is meshed with the second-stage output gear on the rotating shaft, the rotating intermediate gear shaft can drive the rotating shaft to rotate, so that the rotating shaft can rotate around the center shaft, and the rotating shaft can drive the fixedly connected hub to rotate, thereby completing the function of driving the hub to rotate by the motor; through the mode, the motor shaft outputs rotating force, and the motor shaft and the rotating shaft are connected through the secondary transmission assembly, so that the motor shaft and the rotating shaft rotate around the main shaft, the rotating shaft drives the hub to rotate, coaxial transmission is realized, transmission efficiency is improved, the internal structure of the motor is improved, the transmission structure between the motor shaft and the rotating shaft is optimized, the structure is simpler, production efficiency is improved, and meanwhile production cost is reduced.

In the wheel motor, the left end and the right end of the motor shaft are respectively provided with the first bearings, and the motor shaft is abutted against the shell through the first bearings. The first bearing is arranged between the shell and the motor shaft, so that the motor shaft can rotate in the shell while being fixed in the shell.

In the wheel rim motor, the gear cover is arranged on the outer side of the shell, the bolt is arranged on the gear cover, the gear cover is fixedly connected with the shell through the bolt, the gear cover and the shell are combined to form a gear chamber, a second bearing chamber is arranged in the gear cover, and the first bearing chamber is matched with the second bearing chamber, so that the intermediate gear shaft is fixedly connected in the gear chamber. One end of the intermediate gear shaft is positioned in the first bearing chamber, the other end of the intermediate gear shaft is positioned in the second bearing chamber, and after the gear cover and the shell are closed, the intermediate gear shaft and the gears on the intermediate gear shaft are fixed in the gear chamber formed by the gear cover and the shell.

In the wheel motor, one end of the rotating shaft is positioned inside the gear cover, the other end of the rotating shaft extends to the outside of the gear cover, the secondary output gear and the rotating shaft are integrally formed, and the secondary output gear is positioned inside the gear cover. Because the second-stage intermediate gear is positioned in the gear chamber formed by combining the gear cover and the shell, the rotating shaft also needs to extend into the gear cover, and the rotating shaft can be driven to rotate by the intermediate gear shaft through the engagement of the second-stage output gear in the gear cover and the second-stage intermediate gear.

In the wheel motor, a spline is arranged at one end of the rotating shaft, which is positioned outside the gear cover, the rotating shaft is fixedly connected with the center of the hub through the spline, a hollow structure is arranged inside the rotating shaft, and a second bearing is arranged between the inside of the rotating shaft and the center shaft. Because the second bearing is arranged between the rotating shaft and the middle shaft, the rotating shaft can rotate around the middle shaft and is fixedly connected with the center of the hub through the spline, so that the rotating shaft can drive the hub to rotate together with the middle shaft as the center.

In the wheel rim motor, the outer sides of the connecting ends of the intermediate gear shaft and the first bearing chamber and the second bearing chamber are respectively provided with a third bearing, and two ends of the intermediate gear shaft are respectively abutted against the first bearing chamber and the second bearing chamber through the third bearings. The intermediate gear shaft is fixed in the gear chamber by the third bearing while being rotatable in the gear chamber.

In the wheel motor, two ends of the center shaft are provided with the bottom fork fixing sliding blocks, and the bottom fork fixing sliding blocks are connected with the vehicle body. The bottom fork fixing sliding block is used for fixing the middle shaft on the vehicle body, so that the structures such as a motor, a hub and the like on the middle shaft can be fixed on the vehicle body, and the vehicle body can move forwards by driving the hub to rotate through the motor.

Compared with the prior art, the utility model has the following advantages:

1. in this scheme, improved the motor inner structure, optimized the transmission structure between motor shaft and the axis of rotation, make the structure more simple and direct, when improving production efficiency, reduced manufacturing cost.

2. In the internal structure of the motor, the motor shaft outputs rotating force, and the motor shaft and the rotating shaft are connected through the secondary transmission assembly, so that the motor shaft and the rotating shaft rotate around the main shaft as a center, the rotating shaft drives the hub to rotate, coaxial transmission is realized, and transmission efficiency is improved.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic view of the semi-sectional structure of the present utility model;

FIG. 3 is a schematic view of a three-dimensional partial semi-sectional structure of the present utility model;

in the figure, 1, a shell; 1a, a bearing chamber; 2. a hub; 3. a center shaft; 3a, a bottom fork fixing sliding block; 4. a motor rotor; 5. a motor shaft; 5a, a first bearing; 5b, a primary input gear; 6. an intermediate gear shaft; 6a, a first-stage intermediate gear; 6b, a secondary intermediate gear; 6c, a second bearing; 7. a gear cover; 7a, a bearing chamber; 7b, a bolt; 8. a rotating shaft; 8a, spline; 8b, a third bearing; 8c, a secondary output gear; 9. a gear chamber.

Detailed Description

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

Examples

As shown in fig. 1, the hub motor comprises a hub 2 and a motor shell 1, wherein the shell 1 is positioned at the center of the inner side of the hub 2 and fixedly connected with the hub 2 through a structure on the motor, a gear cover 7 is arranged on the outer side of the shell 1, bolts 7b are arranged on the gear cover 7, the gear cover 7 is fixedly connected with the shell 1 through the bolts 7b, a center shaft 3 is arranged in the shell 1, the center shaft 3 penetrates through the shell 1 and the gear cover 7, a rotating shaft 8 is arranged at the position, extending out of the gear cover 7, of the center shaft 3, one part of the rotating shaft 8 is positioned in the gear cover 7, the other part of the rotating shaft 8 is arranged at the outer side of the gear cover 7, a spline 8a is arranged at the position, extending out of the gear cover 7, of the rotating shaft 8 is fixedly connected with the hub 2 through the spline 8a, two ends of the center shaft 3 are connected with a bottom fork fixing slide 3a, the bottom fork fixing slide 3a is connected with a vehicle body, and the center shaft 3 is fixedly connected with the vehicle body through the bottom fork fixing slide 3a, so that the rotating shaft 8, the shell 1 and the hub 2 on the center shaft 3 are fixedly connected with the vehicle body.

As shown in fig. 2 and fig. 3, the gear cover 7 is fixedly connected with the housing 1 to form a gear chamber 9, a motor rotor 4 is arranged in the housing 1, the motor rotor 4 is in a ring structure, a motor shaft 5 is arranged in the ring of the motor rotor 4, two ends of the motor shaft 5 are provided with first bearings 5a, the motor shaft 5 is abutted against the housing 1 through the first bearings 5a at two ends, the left end of the motor shaft 5 penetrates out of the housing 1, a first-stage input gear 5b is arranged at a position penetrating out of the housing 1, a first bearing chamber 1a is arranged on the outer end face of the housing 1, a second bearing chamber 7a is arranged on the gear cover 7, the first bearing chamber 1a and the second bearing chamber 7a are positioned in the gear chamber 9, an intermediate gear shaft 6 is arranged in the gear chamber, two ends of the intermediate gear shaft 6 are provided with second bearings 6c, the second bearing 6c is abutted against the first bearing chamber 1a and the second bearing chamber 7a respectively, so that the intermediate gear shaft 6 is fixedly connected in the gear chamber 9, a first-stage intermediate gear 6a and a second-stage intermediate gear 6b which are fixedly connected are arranged on the intermediate gear shaft 6, the first-stage intermediate gear 6a is meshed with a first-stage input gear 5b on the motor shaft 5, a rotating shaft 8 is arranged outside the center shaft 3, one end of the rotating shaft 8 is positioned in the gear chamber 9, the other part of the rotating shaft 8 is positioned outside the gear chamber 9, an integrally formed second-stage output gear 8c is arranged at a position in the gear chamber 9, the second-stage output gear 8c is meshed with the second-stage intermediate gear 6b, the rotating shaft 8 and the inside of the motor shaft 5 are hollow structures, the center shaft 3 is arranged at the center position of the center shaft, the center shaft 3 respectively penetrates through the shell 1, the motor shaft 5 and the rotating shaft 8 and the left opening of the left side of the rotating shaft 8, a third bearing 8b is arranged between the rotating shaft 8 and the center shaft 3, so that the rotating shaft 8 can rotate around the center shaft 3.

The working principle of the scheme is as follows, as shown in fig. 2, a motor rotor 4 in a shell 1 drives a motor shaft 5 to rotate, the motor shaft 5 rotates in the shell 1 by virtue of a first bearing 5a arranged between the motor shaft 5 and the shell 1 and rotates around a central shaft 3, a primary input gear 5b is meshed with a primary intermediate gear 6a, the rotating motor shaft 5 drives the intermediate gear shaft 6 to rotate in a gear chamber 9, a secondary intermediate gear 6b on the intermediate gear shaft 6 is meshed with a secondary output gear 8c, the intermediate gear shaft 6 drives a rotating shaft 8 to rotate around the central shaft 3, and the rotating shaft 8 is fixedly connected with a hub 2 by virtue of a spline 8a, so that the hub 2 is driven to rotate around the central shaft 3; in this scheme, motor shaft 5 output pivoted power, connect motor shaft 5 and axis of rotation 8 through two-stage transmission subassembly, make motor shaft 5 and axis of rotation 8 rotate with main shaft 3 as the center, make axis of rotation 8 drive wheel hub 2 rotate, realize coaxial transmission, improved driven efficiency, and improved motor inner structure, optimized the transmission structure between motor shaft 5 and the axis of rotation 8, make the structure simpler and more direct, when improving production efficiency, reduced manufacturing cost.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Although 1, the housing is used more herein; 1a, a bearing chamber; 2. a hub; 3. a center shaft; 3a, a bottom fork fixing sliding block; 4. a motor rotor; 5. a motor shaft; 5a, a first bearing; 5b, a primary input gear; 6. an intermediate gear shaft; 6a, a first-stage intermediate gear; 6b, a secondary intermediate gear; 6c, a second bearing; 7. a gear cover; 7a, a bearing chamber; 7b, a bolt; 8. a rotating shaft; 8a, spline; 8b, a third bearing; 8c, a secondary output gear; 9. gear chamber, etc., but does not exclude the possibility of using other terms. These terms are used merely for convenience in describing and explaining the nature of the utility model; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present utility model.

Claims

1. The utility model provides a wheel limit motor, includes motor housing (1) and wheel hub (2), the inside motor rotor (4) that is equipped with of casing (1), the center of motor rotor (4) is equipped with motor shaft (5), the one end of motor shaft (5) extends to the casing (1) outside, the inside of motor shaft (5) is equipped with axis (3), the outside extension of motor shaft (5) is worn out from casing (1) to axis (3) one end, and the other end is towards the other end, a serial communication port, the position that casing (1) was stretched out to motor shaft (5) is equipped with one-level input gear (5 b), casing (1) outside terminal surface is equipped with first bearing room (1 a), be equipped with intermediate gear shaft (6) in first bearing room (1 a), be equipped with one-level intermediate gear (6 a) and second grade intermediate gear (6 b) on intermediate gear (6 a) and one-level input gear (5 b) mesh mutually, be equipped with axis (8) on axis (3), be equipped with second grade output gear (8 c) on axis (8), second grade output gear (8 c) meshes mutually with wheel hub (2).

2. A rim motor according to claim 1, wherein the left and right ends of the motor shaft (5) are respectively provided with a first bearing (5 a), and the motor shaft (5) is abutted against the housing (1) through the first bearings (5 a).

3. The rim motor according to claim 1, wherein a gear cover (7) is arranged on the outer side of the housing (1), a bolt (7 b) is arranged on the gear cover (7), the gear cover (7) is fixedly connected with the housing (1) through the bolt (7 b), the gear cover (7) and the housing (1) are combined to form a gear chamber (9), a second bearing chamber (7 a) is arranged in the gear cover (7), and the first bearing chamber (1 a) is matched with the second bearing chamber (7 a), so that the intermediate gear shaft (6) is fixedly connected in the gear chamber (9).

4. A rim motor according to claim 3, characterized in that one end of the rotating shaft (8) is located inside the gear cover (7), the other end extends to the outside of the gear cover (7), the secondary output gear (8 c) is integrally formed with the rotating shaft (8), and the secondary output gear (8 c) is located inside the gear cover (7).

5. The hub motor according to claim 4, wherein a spline (8 a) is arranged at one end of the rotating shaft (8) located outside the gear cover (7), the rotating shaft (8) is fixedly connected with the center of the hub (2) through the spline (8 a), a hollow structure is arranged inside the rotating shaft (8), and a second bearing (6 c) is arranged between the inside of the rotating shaft (8) and the center shaft (3).

6. A rim motor according to claim 3, characterized in that the outer sides of the connecting ends of the intermediate gear shaft (6) and the first bearing chamber (1 a) and the second bearing chamber (7 a) are respectively provided with a third bearing (8 b), and the two ends of the intermediate gear shaft (6) are respectively abutted against the first bearing chamber (1 a) and the second bearing chamber (7 a) through the third bearing (8 b).

7. The wheel side motor according to claim 1, wherein two ends of the center shaft (3) are provided with bottom fork fixing sliding blocks (3 a), and the bottom fork fixing sliding blocks (3 a) are connected with a vehicle body.