Integrated motor rear fork structure

Abstract

The utility model discloses an integrated motor rear fork structure. Comprising a rear fork unit, the front end of the rear fork unit is rotationally connected to a vehicle frame, and a wheel is installed at the rear end of the rear fork unit and comprises a first chain wheel used for being matched with a chain; the motor unit comprises a second chain wheel used for being matched with a chain, the motor unit and the rear fork unit are relatively fixed, and the motor unit can synchronously act along with the action of the rear fork, so that the distance between the first chain wheel and the second chain wheel is always kept consistent. The motor unit can synchronously act with a rear fork and a rear wheel, the distance between chain wheels is effectively kept constant, efficient and stable operation of a transmission system is ensured, the overall performance and user experience of an electric vehicle are greatly improved, and the structure is simple and compact.

Description

Technical Field

[0001] The utility model relates to the technical field of electric vehicles, in particular to an integrated motor rear fork structure. Background Art

[0002] In the prior art, the power transmission system of electric bicycles, motorcycles and other similar vehicles generally uses motors as the main driving force, and transmits power to the rear wheel through a chain transmission mechanism for driving. Especially in models such as off-road motorcycles and mountain electric bicycles that have high requirements for driving experience and maneuverability, the design of the rear fork assembly is particularly critical.

[0003] The rear fork structure of such vehicles often allows a certain degree of rotational freedom relative to the frame. This design helps the rear wheels to flexibly adapt to changes in road conditions under complex terrain conditions, while ensuring vehicle stability and driver comfort with the help of an efficient shock absorption system.

[0004] However, in conventional practice, the motor is usually fixedly mounted on the main body of the frame. As a result, when the rear fork swings due to uneven road conditions or dynamic driving behavior, the length of the chain connecting the motor and the rear wheel will change. In particular, when the rear fork rebounds or sinks, the distance between the sprocket on the motor and the sprocket on the rear wheel cannot be kept constant, thereby increasing the risk of chain tension fluctuations and may even cause the chain to jump teeth or fall off, seriously affecting the safety and reliability of the vehicle.

[0005] Based on this, the applicant filed this application. Utility Model Content

[0006] The utility model aims at the deficiencies in the prior art and provides an integrated motor rear fork structure.

[0007] In order to solve the above technical problems, the utility model is solved by the following technical solutions:

[0008] Integrated motor rear fork structure, including

[0009] A rear fork unit, the front end of which is rotatably connected to the vehicle frame, and the rear end of which is provided with a wheel, wherein the wheel includes a first sprocket for cooperating with a chain; and

[0010] The motor unit includes a second sprocket for cooperating with the chain. The motor unit is relatively fixed to the rear fork unit and can move synchronously with the movement of the rear fork to keep the distance between the first sprocket and the second sprocket consistent.

[0011] In the above scheme, preferably, the rear fork unit includes a left rear fork, a right rear fork and a center piece connecting the left rear fork and the right rear fork into one body.

[0012] In the above scheme, preferably, the vehicle frame includes a main frame and a connecting shaft installed on the main frame, and the rear fork unit is rotatably installed on the connecting shaft.

[0013] In the above scheme, preferably, a sleeve sleeved on the connecting shaft is fixed to the front end of the rear fork unit, a mounting frame is fixed to the sleeve, and the motor unit is fixedly mounted on the mounting frame.

[0014] In the above solution, preferably, the mounting frame includes a first frame body for mounting the motor unit and a second frame body fixed or integrally formed on the first frame body, and a control unit is fixed on the second frame body.

[0015] In the above scheme, preferably, a connecting seat is fixed on the central member, the connecting seat is rotatably connected to the lower end of the shock absorbing member, and the upper end of the shock absorbing member is rotatably connected to the vehicle frame.

[0016] In the above solution, preferably, the first sprocket and the second sprocket are arranged on the same side of the vehicle frame.

[0017] In the above solution, preferably, the mounting bracket is fixed to one end of the sleeve, and the motor unit is fixed to the side wall of the mounting bracket so that the motor unit is accommodated within the frame range of the vehicle frame.

[0018] In the above solution, preferably, the second frame is formed by bending the first frame, and the control unit is fixed on the top surface of the second frame and is located above the motor unit.

[0019] In the above solution, preferably, the second frame includes a bent portion bent downward to provide protection.

[0020] The beneficial effects of the utility model are:

[0021] The motor unit of the utility model can move synchronously with the rear fork and the rear wheel, effectively maintaining a constant sprocket spacing, ensuring efficient and stable operation of the transmission system, greatly improving the overall performance and user experience of the electric vehicle, and having a simple and compact structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the utility model installed on a vehicle frame.

[0023] Figure 2 It is a schematic diagram of the utility model.

[0024] Figure 3 This is a schematic diagram of another viewing angle of the present invention.

[0025] Figure 4 It is a schematic diagram of the cooperation between the motor unit and the mounting frame of the utility model.

[0026] Figure 5 This is a schematic diagram from another perspective showing the cooperation between the motor unit and the mounting frame of the utility model.

[0027] Figure 6 It is a schematic diagram of the mounting frame of the utility model. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods:

[0029] See also Figure 1-Figure 6 The integrated motor rear fork structure includes a rear fork unit 1 and a motor unit 2, which are relatively fixed and can move synchronously. The rear fork unit 1 is installed on a vehicle frame 3.

[0030] The rear fork unit 1 includes a left rear fork 11, a right rear fork 12 and a center piece 13 connecting the left rear fork 11 and the right rear fork 12 into one body, wherein the left rear fork 11, the right rear fork 12 and the center piece 13 can be independent components connected into one body by fasteners or the like, or the three can be integrally formed.

[0031] The front end of the rear fork unit 1 is rotatably connected to the vehicle frame 3, and the rear end is installed with a wheel 4 (rear wheel), and the wheel 4 includes a first sprocket 41 for cooperating with the chain. In this embodiment, the vehicle frame 3 includes a main frame and a connecting shaft 31 installed on the main frame. The connecting shaft 31 can be arranged horizontally on the main frame. As one of the options, the connecting shaft 31 can be a screw with a length sufficient to pass through the left and right frame parts of the main frame, and it is fixed to the main frame by a nut or other components that cooperate with the screw.

[0032] The rear fork unit 1 is rotatably mounted on the connecting shaft 31, such that the front ends of the left rear fork 11 and the right rear fork 12 are rotatably mounted on the corresponding two ends of the connecting shaft 31. In this embodiment, the front end of the rear fork unit 1 is fixed with a sleeve 5 which is sleeved on the connecting shaft 31. Specifically, the two ends of the sleeve 5 are respectively fixed to the front ends of the left rear fork 11 and the right rear fork 12.

[0033] According to actual needs, an additional sleeve may be further installed between the sleeve 5 and the connecting shaft 31 and / or a bearing may be installed at a corresponding position.

[0034] In this embodiment, a connecting seat 61 is fixedly installed on the center member 13, the connecting seat 61 is rotatably connected to the lower end of the shock absorbing member 62, and the upper end of the shock absorbing member 62 is rotatably connected to the vehicle frame 3 to optimize the vehicle shock absorption effect.

[0035] A mounting frame 7 is fixed on the sleeve 5, and the motor unit 2 is fixedly mounted on the mounting frame 7. The motor unit 2 includes a second sprocket 21 that cooperates with the chain to achieve synchronous movement of the motor unit 2, the rear fork unit 1, and the rear wheel. It can be understood that the three are integrated into one, and the three can rotate along the same rotation point to ensure that the distance between the first sprocket 41 and the second sprocket 21 is always consistent, effectively reducing or avoiding the risk of fluctuations in chain tension, preventing the chain from jumping teeth or falling off, and improving the safety and reliability of the vehicle.

[0036] To facilitate installation of the motor unit 2 , in this embodiment, the mounting bracket 7 is fixed to one end of the sleeve 5 , and the motor unit 2 is fixed to the side wall of the mounting bracket 7 so that the motor unit 2 is accommodated within the frame range of the vehicle frame 3 .

[0037] The mounting frame 7 includes a first frame body 71 for mounting the motor unit 2 and a second frame body 72 for mounting the control unit 8 . The second frame body 72 is fixed or integrally formed on the first frame body 71 .

[0038] As one option, the first frame 71 can be a plate-shaped component, and the motor unit 2 is installed and fixed on the side wall of the first frame 71. The first frame 71 has a hole 711 that matches the sleeve 5. The sleeve 5 is inserted into the hole 711 to fix the two.

[0039] The second frame 72 is formed by bending the upper end of the first frame 71 . The control unit 8 is fixed on the top surface of the second frame 72 and is located above the motor unit 2 .

[0040] To prevent the rear wheel from splashing mud and water onto the motor unit, in this embodiment, the rear end of the second frame 72 includes a bent portion 721 bent downward, and the bent portion 721 can abut against the sleeve 5 or be fixed on the sleeve 5.

[0041] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. The integrated motor rear fork structure is characterized by: include A rear fork unit, the front end of which is rotatably connected to the vehicle frame, and the rear end of which is provided with a wheel, wherein the wheel includes a first sprocket for cooperating with the chain; as well as The motor unit includes a second sprocket for cooperating with the chain. The motor unit is relatively fixed to the rear fork unit and can move synchronously with the movement of the rear fork to keep the distance between the first sprocket and the second sprocket consistent.

2. The integrated motor rear fork structure according to claim 1, characterized in that: The rear fork unit comprises a left rear fork, a right rear fork and a center piece which connects the left rear fork and the right rear fork into one body.

3. The integrated motor rear fork structure according to claim 1 or 2, characterized in that: The vehicle frame comprises a main body frame and a connecting shaft installed on the main body frame, and the rear fork unit is rotatably installed on the connecting shaft.

4. The integrated motor rear fork structure according to claim 3, characterized in that: A sleeve sleeved on the connecting shaft is fixed to the front end of the rear fork unit, a mounting frame is fixed to the sleeve, and the motor unit is fixedly mounted on the mounting frame.

5. The integrated motor rear fork structure according to claim 4, characterized in that: The mounting frame includes a first frame body for mounting the motor unit and a second frame body fixed or integrally formed on the first frame body, and a control unit is fixed on the second frame body.

6. The integrated motor rear fork structure according to claim 2, characterized in that: A connecting seat is fixed on the central member, the connecting seat is rotatably connected to the lower end of the shock absorbing member, and the upper end of the shock absorbing member is rotatably connected to the vehicle frame.

7. The integrated motor rear fork structure according to claim 1, characterized in that: The first sprocket and the second sprocket are arranged on a same side of the vehicle frame.

8. The integrated motor rear fork structure according to claim 4, characterized in that: The mounting frame is fixed at one end of the sleeve, and the motor unit is fixed to the side wall of the mounting frame so that the motor unit is accommodated within the frame range of the vehicle frame.

9. The integrated motor rear fork structure according to claim 5, characterized in that: The second frame is formed by bending the first frame, and the control unit is fixed on the top surface of the second frame and is located above the motor unit.

10. The integrated motor rear fork structure according to claim 5, characterized in that: The second frame includes a bent portion bent downward for protection.

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