Front fork assembly with return function

Abstract

The utility model discloses a front fork assembly with an aligning function. The front fork comprises a front fork body and a connecting cylinder connected with a frame, a connecting pipe is arranged at the top of the front fork body, a connecting piece used for being connected with a handlebar is arranged at the top of the connecting pipe, the connecting cylinder is arranged on the connecting pipe in a sleeving mode and can rotate relative to the connecting pipe, and an aligning structure is arranged between the connecting cylinder and the front fork body. The return structure comprises a return torsion spring, a limiting block and a check block, the return torsion spring comprises a spring body, a first spring arm and a second spring arm, the spring body is arranged on the outer wall of the connecting pipe in a sleeving mode, the limiting block is arranged at the top of the front fork body and located on the front side of the spring body, and the check block is arranged at the bottom of the inner wall of the connecting cylinder. The limiting block and the check block are located between the first spring arm and the second spring arm of the return torsion spring, and the check block is located on the front side of the limiting block. The front fork assembly can be aligned, and the operation intensity of a driver is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of front fork components, in particular to a front fork component with a return function. Background Art

[0002] Motorcycles, bicycles, scooters and other types of vehicles are all steered by handlebars. Specifically, in the aforementioned types of vehicles, the handlebars are fixedly connected to the top of the front fork assembly, and the front wheel is connected via the front fork assembly, so that when the driver turns the handlebars, the front fork assembly will drive the front wheel to steer. However, in the aforementioned types of vehicles in the prior art, the front fork assembly is free to rotate when the driver does not apply force, that is, there is no other mechanism other than the driver that will apply force to the front fork assembly. In this way, if the vehicle is to go straight, it is necessary to continuously apply force to keep the front fork assembly facing forward, which can easily cause driver fatigue. In addition, in an emergency, if the driver is unable to apply force to the front fork assembly, the vehicle is likely to tilt and cause the driver to fall. Summary of the invention

[0003] In order to solve the above technical problems, the utility model provides a front fork assembly with a return function, which can return the front fork assembly to reduce the operation intensity of the driver.

[0004] In order to solve the above problems, the utility model adopts the following technical solutions:

[0005] The utility model discloses a front fork assembly with a return function, comprising a front fork body and a connecting tube connected to a frame, wherein a connecting tube is arranged on the top of the front fork body, a connecting piece for connecting a handlebar is arranged on the top of the connecting tube, the connecting tube is sleeved on the connecting tube and can rotate relatively, a return structure is arranged between the connecting tube and the front fork body, the return structure comprises a return torsion spring, a limit block and a stopper, the return torsion spring comprises a spring body, a first spring arm and a second spring arm, the spring body is sleeved on the outer wall of the connecting tube, the limit block is arranged on the top of the front fork body and is located at the front side of the spring body, the stopper is arranged on the bottom of the inner wall of the connecting tube, the limit block and the stopper are located between the first spring arm and the second spring arm of the return torsion spring, and the stopper is located at the front side of the limit block.

[0006] In this solution, when the vehicle needs to turn, the connecting tube is controlled to rotate by the handlebar, and the rotation of the connecting tube drives the front fork body to rotate. During the rotation of the front fork body, the limit block located on the front side of the spring body is driven to rotate synchronously, and the limit block drives the spring arm on the corresponding side of the return torsion spring to rotate, and the spring arm on the other side of the return torsion spring is blocked by the block at the bottom of the inner wall of the connecting tube. The two spring arms of the return torsion spring are twisted to make the spring body enter a compressed state. When the force on the handlebar stops, the limit block is driven in the reverse direction by the return torsion spring, and the limit block returns to the rear of the block. When the limit block is reset, it drives the front fork body and the connecting tube to reset, so that the vehicle moves forward again.

[0007] Preferably, the return structure also includes a guide assembly, which includes a guide block, which is arranged at the rear end of the bottom of the connecting tube, and a lower annular groove is provided at the top of the front fork body corresponding to the position of the guide block, and the guide block can slide along the lower annular groove.

[0008] When the vehicle turns, the front fork body is driven to rotate, and the guide block at the rear end of the bottom of the connecting tube can slide relatively in the lower annular groove to ensure smooth rotation of the front fork body.

[0009] Preferably, a first arcuate surface is provided on the front side of the bottom of the guide block, and the first arcuate surface is fitted with the inner wall of the lower annular groove. A second arcuate surface is provided on the rear side of the bottom of the guide block, and the second arcuate surface is fitted with the outer wall of the lower annular groove.

[0010] Preferably, a third arcuate surface is provided on the bottom surface of the guide block, the third arcuate surface is in contact with the bottom of the lower annular groove, and the front and rear sides of the third arcuate surface are respectively connected to the first arcuate surface and the second arcuate surface.

[0011] Preferably, the connecting tube is provided with a first through hole and a second through hole in sequence from top to bottom along the axis, the first through hole is rotatably connected to the connecting tube through a connecting assembly, the stop block is provided on the inner wall of the second through hole, and the top of the limit block extends upward into the second through hole.

[0012] Preferably, the connecting assembly includes an upper bowl group and a lower bowl group, the upper bowl group is arranged at the top of the first through hole, the lower bowl group is arranged at the bottom of the first through hole, and the connecting tube is rotatably connected to the first through hole through the upper bowl group and the lower bowl group.

[0013] Preferably, when the front fork body is in the return state, the left and right sides of the limit block respectively abut against the first spring arm and the second spring arm, and the left and right sides of the stop block respectively abut against the first spring arm and the second spring arm.

[0014] Preferably, the lower bowl assembly is used to limit the return torsion spring.

[0015] The beneficial effects of the utility model are as follows: the return structure can ensure that the front fork assembly automatically returns to the center after rotation; the guide assembly can play a guiding role when the front fork assembly rotates, ensuring smooth rotation of the front fork body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the utility model after the connecting tube is removed;

[0018] Figure 3 yes Figure 2 A partial enlarged view of the middle A;

[0019] Figure 4 It is a structural schematic diagram of the connecting tube in the utility model;

[0020] Figure 5 yes Figure 4 A partial enlarged view of point B in the middle;

[0021] Figure 6 This is a schematic diagram of the structure of the front fork assembly of the utility model when turning;

[0022] Figure 7 It is a cross-sectional view of the utility model.

[0023] In the figure: 1, front fork body, 11, connecting tube, 2, connecting tube, 21, first through hole, 22, second through hole, 3, return structure, 31, return torsion spring, 311, first spring arm, 312, second spring arm, 32, limit block, 33, stop block, 4, guide assembly, 41, guide block, 42, lower annular groove. DETAILED DESCRIPTION

[0024] The technical solution of the utility model is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0025] Embodiment: A front fork assembly with a return function in this embodiment, such as Figures 1 to 7As shown, it includes a front fork body 1 and a connecting tube 2 connected to the frame, a connecting tube 11 is arranged on the top of the front fork body 1, a connecting piece for connecting the handlebar is arranged on the top of the connecting tube 11, the connecting tube 2 is sleeved on the connecting tube 11 and can rotate relatively, a return structure 3 is arranged between the connecting tube 2 and the front fork body 1, the return structure 3 includes a return torsion spring 31, a limit block 32 and a stop block 33, the return torsion spring 31 includes a spring body, a first spring arm 311 and a second spring arm 312, the spring body is sleeved on the outer wall of the connecting tube 11, the limit block 32 is arranged at the top of the front fork body and is located at the front side of the spring body, the stop block 33 is arranged at the bottom of the inner wall of the connecting tube 2, the limit block 32 and the stop block 33 are located between the first spring arm 311 and the second spring arm 312 of the return torsion spring 31, and the stop block 33 is located at the front side of the limit block 32.

[0026] The return structure 3 also includes a guide assembly 4, which includes a guide block 41. The guide block 41 is arranged at the rear end of the bottom of the connecting tube 2. A lower annular groove 42 is provided at the top of the front fork body 1 corresponding to the position of the guide block, and the guide block 41 can slide along the lower annular groove 42.

[0027] A first curved surface is provided on the front side of the bottom of the guide block 41, and the first curved surface is fitted with the inner wall of the lower annular groove. A second curved surface is provided on the rear side of the bottom of the guide block, and the second curved surface is fitted with the outer wall of the lower annular groove. A third curved surface is provided on the bottom surface of the guide block 41, and the third curved surface is fitted with the bottom of the lower annular groove. The front and rear sides of the third curved surface are respectively connected to the first curved surface and the second curved surface.

[0028] The connecting tube 2 is provided with a first through hole 21 and a second through hole 22 in sequence from top to bottom along the axis. The first through hole 21 is rotatably connected to the connecting tube 11 through a connecting assembly. The stopper 33 is provided on the inner wall of the second through hole 22, and the top of the limiter 32 extends upward into the second through hole 22.

[0029] The connecting assembly includes an upper bowl assembly and a lower bowl assembly. The upper bowl assembly is arranged at the top of the first through hole 21, and the lower bowl assembly is arranged at the bottom of the first through hole 21. The connecting pipe 11 is rotatably connected to the first through hole 21 through the upper bowl assembly and the lower bowl assembly.

[0030] The rotation of the front fork body and the front wheel assembly is realized by the rotation of the limit block, and the limit block is driven by the front wheel assembly to rotate, so that the front wheel can move forward again.

[0031] When the vehicle turns, the front fork body is driven to rotate, and the guide block at the rear end of the bottom of the connecting tube can slide relatively in the lower annular groove. The first arc surface on the front side of the bottom of the guide block and the second arc surface on the rear side of the bottom are respectively fitted with the inner and outer walls of the lower annular groove, and the third arc surface on the bottom of the guide block is fitted with the bottom of the lower annular groove to ensure smooth rotation of the front fork body.

Claims

1. A front fork assembly with a return function, comprising a front fork body (1) and a connecting tube (2) connected to a frame, wherein a connecting tube (11) is arranged on the top of the front fork body (1), a connecting piece for connecting a handlebar is arranged on the top of the connecting tube (11), and the connecting tube (2) is sleeved on the connecting tube (11) and can rotate relatively, and is characterized in that: A return structure (3) is arranged between the connecting tube (2) and the front fork body (1), the return structure (3) comprising a return torsion spring (31), a limit block (32) and a stop block (33), the return torsion spring (31) comprising a spring body, a first spring arm (311) and a second spring arm (312), the spring body being sleeved on the outer wall of the connecting tube (11), the limit block (32) being arranged at the top of the front fork body and located at the front side of the spring body, the stop block (33) being arranged at the bottom of the inner wall of the connecting tube (2), the limit block (32) and the stop block (33) being located between the first spring arm (311) and the second spring arm (312) of the return torsion spring (31), and the stop block (33) being located at the front side of the limit block (32).

2. The front fork assembly with a return function according to claim 1, characterized in that: The return structure (3) also includes a guide assembly (4), the guide assembly (4) including a guide block (41), the guide block (41) being arranged at the rear end of the bottom of the connecting tube (2), a lower annular groove (42) being arranged at the top of the front fork body (1) corresponding to the position of the guide block, and the guide block (41) being able to slide along the lower annular groove (42).

3. The front fork assembly with a return function according to claim 2, characterized in that: The front side of the bottom of the guide block (41) is provided with a first arcuate surface, the first arcuate surface is in contact with the inner wall of the lower annular groove, and the rear side of the bottom of the guide block is provided with a second arcuate surface, the second arcuate surface is in contact with the outer wall of the lower annular groove.

4. The front fork assembly with a return function according to claim 3, characterized in that: The bottom surface of the guide block (41) is provided with a third arc surface, the third arc surface is in contact with the bottom of the lower annular groove, and the front and rear sides of the third arc surface are respectively connected to the first arc surface and the second arc surface.

5. The front fork assembly with a return function according to claim 1, 2, 3 or 4, characterized in that: The connecting tube (2) is provided with a first through hole (21) and a second through hole (22) in sequence from top to bottom along the axis; the first through hole (21) is rotatably connected to the connecting tube (11) via a connecting assembly; the stopper (33) is provided on the inner wall of the second through hole (22); and the top of the limiter (32) extends upward into the second through hole (22).

6. The front fork assembly with a return function according to claim 5, characterized in that: The connecting assembly comprises an upper bowl group and a lower bowl group, wherein the upper bowl group is arranged at the top of the first through hole (21), and the lower bowl group is arranged at the bottom of the first through hole (21), and the connecting pipe (11) is rotatably connected to the first through hole (21) through the upper bowl group and the lower bowl group.

7. The front fork assembly with a return function according to claim 1, characterized in that: When the front fork body is in the returning state, the left and right sides of the limit block respectively abut against the first spring arm and the second spring arm, and the left and right sides of the stop block respectively abut against the first spring arm and the second spring arm.

8. The front fork assembly with a return function according to claim 6, characterized in that: The lower bowl assembly is used to limit the return torsion spring.

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