Front fork assembly capable of automatically returning

Abstract

The utility model discloses a front fork assembly capable of automatically returning. 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 check block and two return springs, the check block is arranged at the rear end of the bottom of the connecting cylinder, a lower annular groove is formed in the position, corresponding to the check block, of the front fork body, the two return springs are arranged in the lower annular groove in a bilateral symmetry mode, the check block is located between the two return springs, and the check block can slide in the lower annular groove. One ends of the two return springs are fixedly connected with the corresponding sides of the check blocks, and the other ends of the two return springs are fixedly connected with the side wall of the corresponding side of the lower annular groove. 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 an automatic self-centering front fork component. 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 automatic self-centering function, which can realize self-centering of the front fork assembly and 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 an automatic self-centering front fork assembly, comprising a front fork body and a connecting tube connected to a bicycle 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 self-centering structure is arranged between the connecting tube and the front fork body, the self-centering structure comprises a stopper and two self-centering springs, the stopper is arranged at the rear end of the bottom of the connecting tube, a lower ring groove is arranged on the front fork body corresponding to the position of the stopper, two self-centering springs are symmetrically arranged in the lower ring groove, the stopper is located between the two self-centering springs, the stopper can slide in the lower ring groove, one end of the two self-centering springs is fixedly connected to a side corresponding to the stopper, and the other end of the two self-centering springs is fixedly connected to a side wall corresponding to a side of the lower ring groove, and the self-centering spring is used to drive the front fork body to return to the center.

[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 return spring on the corresponding side is squeezed toward the block and enters a compressed state. The block slides relatively in the lower ring groove, and at the same time, the return spring on the other side is driven by the block to enter a stretched state; when the force on the wheel stops, the left and right sides of the block are simultaneously subjected to the reverse force of the two return torsion springs, and the block returns to the center under the action of the two return torsion springs. When the block returns to the center, it drives the front fork body and the connecting tube to return to the center, so that the vehicle moves forward again.

[0007] Preferably, the return structure also includes two lower pressure cover plates, which correspond to the return springs one by one. The two lower pressure cover plates are respectively located above the corresponding return springs and match the lower ring grooves. The lower pressure cover plates are used to limit the return springs in the lower ring grooves.

[0008] Preferably, the lower pressure cover plate includes a connecting block and a lower pressure plate, the connecting block is detachably connected to one end corresponding to the lower ring groove, the lower pressure plate is fixedly connected to the side of the connecting block facing the return spring, and the lower pressure plate is used to limit the return spring.

[0009] Preferably, a receiving groove is provided at the bottom of the lower pressure plate, and the receiving groove matches the upper half of the return spring on the corresponding side.

[0010] Preferably, a first arcuate surface is provided on the front side of the bottom of the stopper, 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 stopper, and the second arcuate surface is fitted with the outer wall of the lower annular groove.

[0011] Preferably, a third arcuate surface is provided on the bottom surface of the stopper, 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.

[0012] 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, and the first through hole is rotatably connected to the connecting pipe via a connecting assembly.

[0013] 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.

[0014] 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 lower pressing cover plate can limit the return spring on the corresponding side to prevent the return spring from falling off the lower ring groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is an exploded view of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the utility model after the connecting tube is removed;

[0018] Figure 4 yes Figure 3 A partial enlarged view of the middle A;

[0019] Figure 5 It is a cross-sectional view of the utility model when turning;

[0020] Figure 6 It is a cross-sectional view of the utility model.

[0021] In the figure: 1, front fork body, 11, connecting tube, 12, lower ring groove, 2, connecting tube, 21, first through hole, 22, second through hole, 3, return structure, 31, stopper, 32, return spring, 33, lower pressure cover plate, 331, connecting block, 332, lower pressure plate. DETAILED DESCRIPTION

[0022] The technical solution of the utility model is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0023] Embodiment: A front fork assembly which automatically returns to its original position according to this embodiment, such as Figures 1 to 6 As shown, it includes a front fork body 1 and a connection 2 connected to the frame, a connecting tube 11 is arranged on the top of the front fork body 1, and a connecting piece for connecting the handlebar is arranged on the top of the connecting tube 11, a 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 stopper 31 and two return springs 32, the stopper 31 is arranged at the rear end of the bottom of the connecting tube 2, a lower ring groove 12 is arranged at the position of the front fork body 1 corresponding to the stopper 31, two return springs 32 are symmetrically arranged in the lower ring groove 12, the stopper 31 is located between the two return springs 32, the stopper 31 can slide in the lower ring groove 12, one end of the two return springs 32 is fixedly connected to the corresponding side of the stopper 31, and the other end of the two return springs 32 is fixedly connected to the side wall of the corresponding side of the lower ring groove 12. The return structure 3 also includes two lower pressure cover plates 33, which correspond to the return springs 32 one by one. The two lower pressure cover plates 33 are respectively located above the corresponding return springs 32 and match the lower ring groove 12. The lower pressure cover plate 33 includes a connecting block 331 and a lower pressure plate. The connecting block 331 is detachably connected to one end corresponding to the lower ring groove 12, and the lower pressure plate is fixedly connected to the connecting block 331 facing the return spring. A receiving groove is provided at the bottom of the lower pressure plate 332, and the receiving groove matches the upper half of the return spring 32 on the corresponding side.

[0024] A first arcuate surface is provided at the front side of the bottom of the stopper 31, and the first arcuate surface is in contact with the inner wall of the lower annular groove. A second arcuate surface is provided at the rear side of the bottom of the stopper 31, and the second arcuate surface is in contact with the outer wall of the lower annular groove.

[0025] A third arcuate surface is provided on the bottom surface of the stopper 31, and 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.

[0026] 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 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 21, and the lower bowl group is arranged at the bottom of the first through hole 21. The connecting tube 11 is rotatably connected to the first through hole 21 through the upper bowl group and the lower bowl group.

[0027] In this solution, when the vehicle needs to turn, the handlebar controls the connecting tube to rotate, and the rotation of the connecting tube drives the front fork body to rotate, and the rotation of the front fork body drives the front wheel to rotate. During the rotation of the front fork body, the return spring on the corresponding side moves toward the block, and the block slides relatively in the lower ring groove. The return spring on the corresponding side begins to be squeezed after contacting the block, and the return spring on the other side is stretched. When the force on the handlebar stops, the left and right sides of the block are respectively subjected to the reverse force of the two return springs, and the return spring drives the front fork body to return, and finally the return spring drives the wheel to return.

[0028] When the vehicle turns, the front fork body is driven to rotate, and the 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 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 block is fitted with the bottom of the lower annular groove to ensure smooth rotation of the front fork body.

Claims

1. An automatic self-centering front fork assembly, 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 to 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 provided between the connecting tube (2) and the front fork body (1), the return structure (3) comprising a stopper (31) and two return springs (32), the stopper (31) being provided at the rear end of the bottom of the connecting tube (2), the front fork body (1) being provided with a lower annular groove (12) at a position corresponding to the stopper (31), the two return springs (32) being symmetrically arranged in the lower annular groove (12), the stopper (31) being located between the two return springs (32), the stopper (31) being slidable in the lower annular groove (12), one end of the two return springs (32) being fixedly connected to a side corresponding to the stopper (31), and the other end of the two return springs (32) being fixedly connected to a side wall of a side corresponding to the lower annular groove (12), the return spring (32) being used for driving the front fork body (1) to return.

2. The self-centering front fork assembly according to claim 1, characterized in that: The return structure (3) also includes two lower pressure cover plates (33), and the lower pressure cover plates (33) correspond to the return springs (32) one by one. The two lower pressure cover plates (33) are respectively located above the corresponding return springs (32) and match the lower ring groove (12). The lower pressure cover plates (33) are used to limit the return springs (32) in the lower ring groove (12).

3. The self-centering front fork assembly according to claim 2, characterized in that: The lower pressure cover plate (33) comprises a connecting block (331) and a lower pressure plate. The connecting block (331) is detachably connected to one end corresponding to the lower annular groove (12). The lower pressure plate is fixedly connected to the connecting block (331) on the side facing the return spring. The lower pressure plate is used to limit the return spring (32).

4. The self-centering front fork assembly according to claim 3, characterized in that: The bottom of the lower pressing plate (332) is provided with a receiving groove, and the receiving groove matches the upper half of the return spring (32) on the corresponding side.

5. The self-centering front fork assembly according to claim 1, characterized in that: The stopper (31) has a first arcuate surface at the front side of the bottom, the first arcuate surface is in contact with the inner wall of the lower annular groove, and the stopper (31) has a second arcuate surface at the rear side of the bottom, the second arcuate surface is in contact with the outer wall of the lower annular groove.

6. The self-centering front fork assembly according to claim 5, characterized in that: The bottom surface of the stopper (31) 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.

7. An automatically self-centering front fork assembly according to claim 1 or 2 or 3 or 4 or 5 or 6, 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, and the first through hole (21) is rotatably connected to the connecting tube (11) via a connecting assembly.

8. The self-centering front fork assembly according to claim 7, 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.

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