Rear fork structure of electric bicycle

Abstract

The utility model discloses a rear fork structure of an electric bicycle, which is provided with a main frame, a rear fork main body, a first connecting rod and a second connecting rod to form a four-connecting-rod mechanism, so that the strength of the frame is increased, the movable freedom degree of a damping system can be increased, a rear wheel can be more attached to the ground when facing various complex road conditions, and the service life of the rear wheel is prolonged. Compared with the prior art, the rear wheel damping device has the advantages that the rear wheel damping device provides larger suspension stroke, so that more impact energy is absorbed, sufficient damping effect of the rear wheel under various complex road conditions is guaranteed, and driving comfort is improved; the inverted V-shaped first limiting baffle and the arc-shaped second limiting baffle are respectively arranged in the support frame and the first connecting rod; the first limiting plate and the second limiting plate can limit the two ends of the shock absorber when the shock absorber is installed, then rapid installation of the shock absorber is achieved, then a through groove facilitating disassembly and assembly of the shock absorber is formed in the second connecting rod, convenient installation and replacement of the shock absorber are further achieved, and maintenance, repair or replacement of the shock absorber is facilitated.

Description

Technical Field

[0001] The utility model relates to the field of electric bicycles, and more specifically, to a rear fork structure of an electric bicycle. Background Art

[0002] An electric bicycle is a bicycle equipped with an electric power-assist system. It combines the two power sources of a traditional bicycle: human-powered and electric-powered. It reduces the rider's physical exertion and increases speed and endurance. Foldable electric bicycles are particularly popular because they are easy to carry.

[0003] Folding electric bicycles are a type of electric bicycles. Folding electric bicycles are becoming more and more popular because of their portability and small space requirements. However, in order to improve portability, the existing folding electric bicycles have a relatively simple overall structure. In order to improve comfort, the shock absorber is often simply connected to the rear fork and the main frame, which has the defects of poor shock absorption effect and insufficient frame strength.

[0004] Based on the above, the purpose of the present utility model is to provide a rear fork structure of an electric bicycle to solve the above problems. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of the utility model is to provide an electric bicycle rear fork structure. The utility model forms a four-link mechanism by arranging a main frame, a rear fork body, a first connecting rod and a second connecting rod. While increasing the strength of the frame, it can increase the freedom of movement of the shock absorbing system, so that the rear wheel can fit the ground better when facing various complex road conditions, provide a larger suspension travel, thereby absorbing more impact energy and improving riding comfort.

[0006] The above technical purpose of the utility model is achieved through the following technical solutions: a rear fork structure of an electric bicycle, comprising a main frame, a rear fork body and a shock absorber, the rear fork body being rotatably connected to the main frame, a support frame being fixedly connected to the main frame, one end of the shock absorber being rotatably connected to the support frame, a first connecting rod being rotatably connected to the other end of the shock absorber, the rear fork body being rotatably connected to the first connecting rod, a second connecting rod having one end rotatably connected to the first connecting rod being provided on the first connecting rod, the other end of the second connecting rod being rotatably connected to the main frame, a mounting frame being fixedly connected to the main frame, and the support frame being fixedly connected to the lower end surface of the mounting frame.

[0007] By adopting the above technical solution, the main frame, the rear fork body, the first link and the second link will form a 4-link mechanism, which can increase the frame strength while increasing the freedom of movement of the shock absorbing system, so that the rear wheel can fit the ground better when facing various complex road conditions, provide a larger suspension travel, thereby absorbing more impact energy, ensuring that the rear wheel obtains sufficient shock absorption effect under various complex road conditions, and can also optimize the overall handling and comfort of the vehicle, thereby improving driving comfort.

[0008] The utility model is further configured as follows: a first limit baffle and a second limit baffle are respectively arranged in the support frame and the first connecting rod.

[0009] The utility model is further configured as follows: the second limit baffle is configured in an arc shape, and the first limit baffle is configured in a ∧ shape.

[0010] The utility model is further configured as follows: a through groove is provided on the second connecting rod for facilitating the disassembly and assembly of the shock absorber.

[0011] The utility model is further configured as follows: a reinforcing rib is arranged on the second connecting rod.

[0012] The utility model is further configured as follows: a fender is arranged on one side of the rear fork body close to the mounting frame.

[0013] The utility model is further configured as follows: the mounting frame is configured in a U-shape.

[0014] In summary, the utility model has the following beneficial effects:

[0015] The utility model forms a four-link mechanism by arranging a main frame, a rear fork body, a first connecting rod and a second connecting rod, which increases the strength of the frame and at the same time increases the freedom of movement of the shock absorbing system, so that the rear wheel can fit the ground better when facing various complex road conditions, providing a larger suspension stroke, thereby absorbing more impact energy, ensuring that the rear wheel obtains a sufficient shock absorbing effect under various complex road conditions, and optimizing the overall controllability and comfort of the vehicle, improving driving comfort, and further providing a first ∧-shaped limit baffle and a second arc-shaped limit baffle in the support frame and the first connecting rod respectively, the first limit plate and the second limit plate will limit the two ends of the shock absorber when installing the shock absorber, thereby realizing rapid installation of the shock absorber, and then providing a through groove on the second connecting rod for facilitating disassembly and assembly of the shock absorber, further realizing convenient installation and replacement of the shock absorber, and facilitating maintenance, repair or replacement of the shock absorber. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The overall structure of this utility model patent is shown in FIG. Figure 1 , showing the overall structure of the utility model;

[0017] Figure 2 The overall structure of this utility model patent is shown in FIG. Figure 2 , showing the connection relationship between the first connecting rod, the shock absorber and the support frame;

[0018] Figure 3 The overall structure of this utility model patent is shown in FIG. Figure 3 , showing the positions of the first limit baffle and the second limit baffle.

[0019] In the figure: 1. main frame; 2. rear fork body; 3. shock absorber; 4. support frame; 5. first connecting rod; 6. second connecting rod; 7. mounting frame; 8. first limit baffle; 9. second limit baffle; 10. through groove; 11. reinforcing rib; 12. mudguard. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0021] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", "top / bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and 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 therefore cannot be understood as a limitation on the present invention.

[0022] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0023] The utility model is described in detail below in conjunction with the accompanying drawings.

[0024] A rear fork structure of an electric bicycle, such as Figure 1-Figure 3As shown, it includes a main frame 1, a rear fork body 2 and a shock absorber 3, the rear fork body 2 is rotatably connected to the main frame 1, a support frame 4 is fixedly connected to the main frame 1, one end of the shock absorber 3 is rotatably connected to the support frame 4, the other end of the shock absorber 3 is rotatably connected to a first connecting rod 5, the rear fork body 2 is rotatably connected to the first connecting rod 5, the first connecting rod 5 is provided with a second connecting rod 6 with one end rotatably connected thereto, the other end of the second connecting rod 6 is rotatably connected to the main frame 1, a mounting frame 7 is fixedly connected to the main frame 1, and the support frame 4 is fixedly connected to the lower end surface of the mounting frame 7.

[0025] Furthermore, a first limit baffle plate 8 and a second limit baffle plate 9 are fixedly connected to the support frame 4 and the first connecting rod 5 respectively.

[0026] Furthermore, the second limit baffle 9 is arranged in an arc shape, and the first limit baffle 8 is arranged in a ∧ shape.

[0027] Furthermore, a through slot 10 is provided on the second connecting rod 6 to facilitate the disassembly and assembly of the shock absorber 3 .

[0028] Furthermore, a reinforcing rib 11 is fixedly connected to the second connecting rod 6 .

[0029] Furthermore, a fender 12 is fixedly connected to one side of the rear fork body 2 close to the mounting frame 7 .

[0030] Furthermore, the mounting frame 7 is arranged in a U-shape.

[0031] Working principle: The main frame 1, the rear fork body 2, the first link 5 and the second link 6 form a four-link mechanism, which can increase the frame strength while increasing the freedom of movement of the shock absorbing system, so that the rear wheel can fit the ground better when facing various complex road conditions, provide a larger suspension travel, thereby absorbing more impact energy, ensuring that the rear wheel obtains sufficient shock absorption effect under various complex road conditions, and can also optimize the overall handling and comfort of the vehicle and improve driving comfort.

[0032] The ∧-shaped first limit baffle 8 and the arc-shaped second limit baffle 9 can increase the supporting strength of the support frame 4 and the second connecting rod 6, and the first limit plate and the second limit plate will limit the two ends of the shock absorber 3 when installing the shock absorber 3, thereby realizing rapid positioning of the two ends of the shock absorber 3 and facilitating the installation of the shock absorber 3. The through groove 10 can facilitate the insertion of a socket wrench to disassemble and assemble the shock absorber 3, thereby making it unnecessary to remove the second connecting rod 6 first when maintaining, repairing or replacing the shock absorber 3, thereby further realizing convenient installation and replacement of the shock absorber 3. The reinforcing rib 11 can enhance the overall strength of the second connecting rod 6 and avoid reducing the strength of the second connecting rod 6 due to the provision of the through groove 10.

[0033] The mounting frame 7 is arranged in a U-shape, and the battery can be installed in the hollow position in the middle, and the force borne by the supporting frame 4 can be shared to make the supporting strength of the frame higher. The mud guard 12 can prevent the mud and water thrown off the tire from being adsorbed on the battery and the shock absorber 3.

[0034] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A rear fork structure of an electric bicycle, comprising a main frame (1), a rear fork body (2) and a shock absorber (3), wherein the rear fork body (2) is rotatably connected to the main frame (1). Features: The main frame (1) is fixedly connected to a support frame (4); one end of the shock absorber (3) is rotatably connected to the support frame (4); the other end of the shock absorber (3) is rotatably connected to a first connecting rod (5); the rear fork body (2) is rotatably connected to the first connecting rod (5); a second connecting rod (6) is provided on the first connecting rod (5) and one end of the second connecting rod (6) is rotatably connected to the first connecting rod; the other end of the second connecting rod (6) is rotatably connected to the main frame (1); a mounting frame (7) is fixedly connected to the main frame (1); and the support frame (4) is fixedly connected to the lower end surface of the mounting frame (7).

2. The rear fork structure of an electric bicycle according to claim 1, Features: A first position limiting baffle (8) and a second position limiting baffle (9) are respectively arranged in the support frame (4) and the first connecting rod (5).

3. The rear fork structure of an electric bicycle according to claim 2, Features: The second limit baffle (9) is arranged in an arc shape, and the first limit baffle (8) is arranged in an ∧ shape.

4. The rear fork structure of an electric bicycle according to claim 1, Features: The second connecting rod (6) is provided with a through slot (10) for facilitating the disassembly and assembly of the shock absorber (3).

5. The rear fork structure of an electric bicycle according to claim 4, Features: The second connecting rod (6) is provided with a reinforcing rib (11).

6. The rear fork structure of an electric bicycle according to claim 1, Features: A fender (12) is provided on one side of the rear fork body (2) close to the mounting frame (7).

7. The rear fork structure of an electric bicycle according to claim 1, Features: The mounting frame (7) is arranged in a U-shape.

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