Rocker arm front fork

Abstract

The utility model discloses a rocker arm front fork which comprises a front fork vertical pipe, a connecting transverse pipe and a shock absorber, the front fork vertical pipe comprises a supporting connecting pipe, a left rocker arm and a right rocker arm, and the two sides of the bottom of the supporting connecting pipe are connected with the left rocker arm and the right rocker arm respectively. The bottom of the left rocker arm and the bottom of the right rocker arm are rotationally connected with the connecting transverse pipe, a first adjusting frame is arranged on the surfaces of the left rocker arm and the right rocker arm, a second adjusting frame is arranged on the surface of the connecting transverse pipe, one end of the shock absorber is connected with the first adjusting frame, and the other end of the shock absorber is connected with the second adjusting frame. The rocker arm front fork has the advantages of being large in load, good in damping performance, high in comfort level and the like.

Description

Technical Field

[0001] This utility model belongs to the technical field of vehicle suspension systems, specifically relating to a rocker arm front fork. Background Technology

[0002] A rocker arm fork is a special design for the front suspension system of two-wheeled or three-wheeled vehicles. Its core lies in replacing the rigid connection of the traditional fork with a rocker arm structure to achieve more flexible shock absorption and steering performance.

[0003] Existing front forks generally consist of a cross tube, two swingarms on either side, and shock absorbers mounted on the swingarms. However, in practice, existing front forks have been found to have poor adaptability. Because traditional front forks have a fixed mounting angle, they are difficult to adapt to frames with different head tube angles. Furthermore, the fixed mounting position of the shock absorbers on traditional swingarms often results in insufficient shock absorption under heavy loads, leading to reduced riding comfort. In addition, ordinary front forks can easily cause excessive load on the frame when carrying heavy loads, affecting structural lifespan. To address these problems, this invention provides an adjustable, high-load-bearing, and highly adaptable swingarm front fork. Utility Model Content

[0004] The purpose of this invention is to provide a rocker arm fork to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A rocker arm fork includes a fork steerer tube, a connecting cross tube, and a shock absorber. The fork steerer tube includes a support connecting tube, a left rocker arm, and a right rocker arm. The two sides of the bottom of the support connecting tube are respectively connected to the left rocker arm and the right rocker arm. The bottom of the left rocker arm and the right rocker arm are rotatably connected to the connecting cross tube. The surface of the left rocker arm and the right rocker arm is provided with a first adjustment bracket. The surface of the connecting cross tube is provided with a second adjustment bracket. One end of the shock absorber is connected to the first adjustment bracket, and the other end is connected to the second adjustment bracket.

[0007] By adopting the above technical solution—utilizing the rotatably connected left and right rocker arms and the adjustable shock absorber connected between the first and second adjustment frames—the angle of the entire rocker arm fork can be adjusted to adapt to the installation requirements of different fork sizes. This fork can adapt to frame head tube angles of 55.1° to 80° by changing the installation position of different shock absorbers. The force distribution differs depending on whether the vehicle is unloaded or loaded. When the vehicle is unloaded, the shock absorber is installed on the rear side of the second adjustment frame, where the force perpendicular to the ground is smaller. When the load is vertical, the shock absorber is installed on the front side of the second adjustment frame, where the force perpendicular to the ground is smaller. This improves the shock absorber's absorption of the impact of bumps, and the discomfort felt by the rider is greatly reduced.

[0008] Preferably, a placement rack is provided on one side of the supporting connecting pipe, the surface of the placement rack is provided with a plurality of locking holes, and a reinforcing bracket is provided between the bottom of the placement rack and the supporting connecting pipe.

[0009] By adopting the above technical solution, a rack with several locking holes can be used to easily install a rack or basket on top of the front fork, resulting in high connection stability. Furthermore, the load-bearing capacity of the front of the vehicle can be improved by reinforcing the rack with a reinforcement bracket.

[0010] Preferably, the connecting horizontal tube is C-shaped, and each end is provided with a hook, and a gasket mounting groove is provided on one side of the hook.

[0011] By adopting the above technical solution, using the hook and the shim mounting groove located inside the hook, the stability of the front wheel during rotation can be improved. In addition, the hook is made of all steel, resulting in higher torque.

[0012] Preferably, a disc brake mounting bracket is provided above the two hooks.

[0013] By adopting the above technical solution, the dual disc brake mounting bracket allows users to choose between electric drive or foot drive for disc brake installation, improving product applicability and facilitating installation.

[0014] Preferably, the left rocker arm and the right rocker arm are provided with reflective strip mounting brackets on the side away from the first adjustment frame, and the reflective strip body is embedded inside the reflective strip mounting bracket.

[0015] By adopting the above technical solution, the reflective strip body and the reflective strip mounting bracket can reflect light on both sides of the front fork, further improving the vehicle's safety performance.

[0016] Preferably, the shock absorber includes a connector, a damper, and a spring. The damper has connectors at both ends, and a spring is sleeved on the outside of the damper. The two connectors are respectively connected to the first adjustment frame and the second adjustment frame.

[0017] By adopting the above technical solution: the shock absorber, which consists of a connector, a damper and a spring, can significantly improve the shock absorption performance. The shock absorber can be equipped with pneumatic shock absorption or hydraulic shock absorption.

[0018] The technical effects and advantages of this utility model are as follows:

[0019] The first and second adjustment brackets are used to coordinate the shock absorber mounting position with the rocker arm rotation structure, allowing the front fork angle to be adjusted within a range of 55.1°-80° to meet the head tube angle adaptation requirements of different frames. When unloaded, the rear shock absorber can reduce the vertical ground force, while the front installation optimizes impact absorption when loaded, effectively reducing the feeling of bumps while riding. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure on the other side of this utility model.

[0022] In the diagram: 1. Front fork vertical tube; 11. Support connecting tube; 111. Placement frame; 112. Locking hole; 113. Reinforcing bracket; 12. Left swingarm; 13. Right swingarm; 14. First adjustment frame; 2. Connecting cross tube; 21. Second adjustment frame; 3. Shock absorber; 31. Connector; 32. Damper; 33. Spring; 4. Dropper; 41. Shim mounting slot; 5. Disc brake mounting bracket; 6. Reflector mounting bracket; 61. Reflector body. Detailed Implementation

[0023] The following will refer to the appendix in the embodiments of this utility model. Figures 1-2 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The specific embodiments described herein are merely used to explain this utility model and are not intended to limit this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] Example:

[0025] like Figures 1-2As shown, this utility model provides a rocker arm front fork, including a fork steerer tube 1, a connecting cross tube 2, and a shock absorber 3. The fork steerer tube 1 includes a support connecting tube 11, a left rocker arm 12, and a right rocker arm 13. The two sides of the bottom of the support connecting tube 11 are respectively connected to the left rocker arm 12 and the right rocker arm 13. The bottom of the left rocker arm 12 and the right rocker arm 13 are rotatably connected to the connecting cross tube 2. A first adjustment frame 14 is provided on the surface of the left rocker arm 12 and the right rocker arm 13, and a second adjustment frame 21 is provided on the surface of the connecting cross tube 2. One end of the shock absorber 3 is connected to the first adjustment frame 14, and the other end is connected to the second adjustment frame 21. The left rocker arm 12 and the right rocker arm 13 are rotatably connected, and the shock absorber 3 is rotatably connected to the connecting cross tube 2. The shock absorber 3 between the first adjustment bracket 14 and the second adjustment bracket 21 allows for adjustment of the entire rocker arm fork angle, thus adapting to the installation requirements of different fork sizes. This fork can be adapted to frame head tube angles of 55.1° to 80° by changing the installation position of the shock absorber 3. The position of the shock absorber 3 is different when unloaded and loaded, resulting in different force distribution. When the vehicle is unloaded, the shock absorber 3 is installed on the rear side of the second adjustment bracket 21, at which time the force perpendicular to the ground is smaller; when the load is vertical, the shock absorber 3 is installed on the front side of the second adjustment bracket 21, at which time the force perpendicular to the ground is smaller, which can improve the absorption of the shock absorber's impact force from bumps, and the discomfort felt by the rider will be greatly reduced.

[0026] A placement rack 111 is provided on one side of the support connecting tube 11. The surface of the placement rack 111 is provided with several locking holes 112. A reinforcing bracket 113 is provided between the bottom of the placement rack 111 and the support connecting tube 11. By using the placement rack 111 with several locking holes 112, it is convenient to install a rack or basket on the front fork. The connection stability is high. The reinforcing bracket 113 further strengthens the load-bearing capacity of the front of the vehicle.

[0027] The connecting horizontal tube 2 is C-shaped, and each end is equipped with a hook 4. A gasket mounting groove 41 is opened on one side of the hook 4. By using the hook 4 and the gasket mounting groove 41 located inside the hook 4, the stability of the front wheel when rotating can be improved. In addition, the hook 4 is made of all steel material, which has higher torque.

[0028] Above the two hooks 4, there is a disc brake mounting bracket 5. With the dual disc brake mounting bracket 5, users can choose to install disc brakes according to two different methods: electric drive or foot drive, which improves the applicability of the product and facilitates installation.

[0029] A reflective strip mounting bracket 6 is provided on the side of the left rocker arm 12 and the right rocker arm 13 away from the first adjustment frame 14. A reflective strip body 61 is embedded inside the reflective strip mounting bracket 6. The reflective strip body 61 and the reflective strip mounting bracket 6 can reflect light on both sides of the front fork, further improving the safety performance of the vehicle.

[0030] The shock absorber 3 includes a connector 31, a damper 32, and a spring 33. Both ends of the damper 32 are provided with connectors 31, and the damper 32 is fitted with a spring 33. The two connectors 31 are respectively connected to the first adjusting frame 14 and the second adjusting frame 21. The shock absorber 3, composed of connectors 31, dampers 32 and springs 33, can greatly improve the damping performance. The shock absorber 3 can be equipped with pneumatic damping or hydraulic damping.

[0031] In summary, this device features multi-angle adaptive adjustment. Through the adjustable shock absorber mounting position and the rocker arm rotation structure, it achieves front fork angle adjustment within a range of 55.1°-80°, meeting the head tube angle adaptation requirements of different bicycle frames. When unloaded, the rear-mounted shock absorber reduces vertical ground force; under load, the front-mounted design optimizes impact absorption, effectively reducing riding bumps.

[0032] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rocker arm fork, characterized in that: The device includes a front fork steerer tube (1), a connecting tube (2), and a shock absorber (3). The front fork steerer tube (1) includes a support connecting tube (11), a left rocker arm (12), and a right rocker arm (13). The two sides of the bottom of the support connecting tube (11) are connected to the left rocker arm (12) and the right rocker arm (13) respectively. The bottom of the left rocker arm (12) and the right rocker arm (13) are rotatably connected to the connecting tube (2). The surfaces of the left rocker arm (12) and the right rocker arm (13) are provided with a first adjustment frame (14). The surface of the connecting tube (2) is provided with a second adjustment frame (21). One end of the shock absorber (3) is connected to the first adjustment frame (14), and the other end is connected to the second adjustment frame (21).

2. The rocker arm fork according to claim 1, characterized in that: A placement rack (111) is provided on one side of the support connecting pipe (11), and a plurality of locking holes (112) are provided on the surface of the placement rack (111). A reinforcing bracket (113) is provided between the bottom of the placement rack (111) and the support connecting pipe (11).

3. A rocker arm front fork according to claim 1, characterized in that: Both ends of the connecting horizontal tube (2) are provided with hooks (4), and a gasket mounting groove (41) is provided on one side of the hooks (4).

4. A rocker arm front fork according to claim 3, characterized in that: Disc brake mounting brackets (5) are provided above the two hooks (4).

5. A rocker arm front fork according to claim 1, characterized in that: The left rocker arm (12) and the right rocker arm (13) are provided with reflective strip mounting brackets (6) on the side away from the first adjustment frame (14), and reflective strip bodies (61) are embedded inside the reflective strip mounting brackets (6).

6. A rocker arm fork according to claim 1, characterized in that: The shock absorber (3) includes a connector (31), a damper (32) and a spring (33). Both ends of the damper (32) are provided with connectors (31), and the damper (32) is fitted with a spring (33). The two connectors (31) are respectively connected to the first adjusting frame (14) and the second adjusting frame (21).

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