Shock-absorbing front fork structure with adjustable stroke

Abstract

The utility model relates to the technical field of bicycle shock absorbers, and discloses a shock-absorbing front fork structure with an adjustable stroke, which comprises an elastic component, a shell, a piston arranged in the shell, an adjusting component arranged at the upper end of the elastic component, and an elastic component arranged at the lower end of the adjusting component, comprising a cylinder body, a floating piston arranged in the cylinder body, a stroke piston rod and a valve needle, the upper end of the cylinder body is connected with the hollow stroke piston rod, and the valve needle penetrates through the center of the stroke piston rod and is used for adjusting the stroke. The elastic component and the adjusting component are coaxially connected in series, so that the elastic component and the adjusting component share the air chamber, a user changes hydraulic pressure by adjusting a valve needle on the stroke piston rod, the stroke is adjusted, the size of the elastic component is not changed by adjusting the stroke, and the working efficiency is improved. And the shock-absorbing curve of the shock-absorbing front fork is not influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycle shock absorbers, in particular to a shock-absorbing front fork structure with adjustable stroke. Background Art

[0002] Existing shock-absorbing front forks usually include upper tubes, down tubes, suspension systems, regulating valves, rod-shaped components and other components, and the existing shock-absorbing front fork structure usually has its stroke adjusted before leaving the factory. If users need to change the stroke, they usually need to disassemble the product and then change the stroke of the front fork by changing the position of the fixing pin or replacing piston rods of different lengths, which is time-consuming, labor-intensive and difficult to operate.

[0003] In view of this, a shock-absorbing front fork structure with adjustable stroke is proposed from a practical perspective. Utility Model Content

[0004] The utility model aims to provide a shock-absorbing front fork structure with adjustable stroke to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A shock-absorbing front fork structure with adjustable stroke, characterized by comprising:

[0007] The elastic component comprises a housing and a piston arranged in the housing, wherein the lower end of the piston is connected with a piston rod;

[0008] The adjusting component is arranged at the upper end of the elastic component, and includes a cylinder body, a floating piston arranged in the cylinder body, a stroke piston rod and a valve needle. The upper end of the cylinder body is connected to a hollow stroke piston rod, and the valve needle is passed through the center of the stroke piston rod for adjusting the stroke.

[0009] Preferably, a through hole is provided at the lower end of the shell, and the piston drives the piston rod to slide frictionally in the inner space of the shell through the through hole, so as to balance the air pressure in the elastic component space.

[0010] Preferably, a second through hole is provided at the upper end of the shell to connect the elastic component space with the space below the floating piston in the cylinder body.

[0011] Preferably, a travel piston is provided at one end of the travel piston rod, and the travel piston is arranged inside the cylinder body.

[0012] Preferably, a lateral hole is provided at the connection between the travel piston rod and the travel piston, and the lateral hole connects the travel piston up and down.

[0013] Preferably, the valve needle controls the opening and closing of the lateral hole.

[0014] Preferably, the other end of the travel piston rod is connected to a regulating valve.

[0015] The beneficial effects of the utility model are as follows: the utility model connects the elastic component and the adjusting component in a coaxial series manner, so that the elastic component and the adjusting component share an air chamber, and the user can adjust the stroke by changing the hydraulic pressure through the valve needle on the adjusting stroke piston rod, wherein the adjusting stroke will not change the volume of the elastic component and will not affect the shock absorption curve of the shock-absorbing front fork. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the front view of the utility model;

[0017] Figure 2 It is a cross-sectional view of the utility model;

[0018] Figure numerals: 1. regulating valve; 2. travel piston rod; 3. cylinder body; 4. housing; 5. piston rod; 6. valve needle; 7. travel piston; 8. floating piston; 9. piston. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. 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.

[0021] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it 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 invention can be understood according to specific circumstances.

[0022] See also Figure 1-Figure 2 , Figure 1-Figure 2The structure of a shock-absorbing front fork with adjustable stroke according to the utility model is schematically shown.

[0023] In the embodiment of the utility model, the shock absorbing front fork structure applied to the adjustable stroke includes:

[0024] The elastic component comprises a housing 4 and a piston 9 arranged in the housing 4, wherein the lower end of the piston 9 is connected to a piston rod 5;

[0025] The adjusting component is arranged at the upper end of the elastic component, and comprises a cylinder body 3, a floating piston 8 arranged in the cylinder body 3, a stroke piston rod 2 and a valve needle 6. The upper end of the cylinder body 3 is connected with a hollow stroke piston rod 2, and the center of the stroke piston rod 2 is penetrated with a valve needle 6 for adjusting the stroke;

[0026] Furthermore, a through hole is provided at the lower end of the shell 4, and the piston 9 drives the piston rod 5 to slide frictionally in the internal space of the shell 4 through the through hole, so as to balance the air pressure in the elastic component space.

[0027] The piston 9 is connected to the piston rod 5 in a T-shape, and the piston slides frictionally in the space inside the housing 4 and drives the piston rod.

[0028] Furthermore, a second through hole is provided at the upper end of the housing 4 , connecting the elastic component space with the space below the floating piston 8 in the cylinder body 3 .

[0029] The elastic component space and the space below the floating piston in the cylinder body 3 constitute the space B, and the space above the floating piston in the cylinder body 3 constitutes the space A.

[0030] Among them, the volume of space B is fixed.

[0031] Furthermore, a travel piston 7 is provided at one end of the travel piston rod 2 , and the travel piston 7 is arranged inside the cylinder body 3 .

[0032] Furthermore, a lateral hole (not shown) is provided at the connection between the travel piston rod 2 and the travel piston 7, and the lateral hole conducts the travel piston 7 up and down.

[0033] Furthermore, the valve needle 6 controls the opening and closing of the lateral hole.

[0034] When the valve needle 6 is opened, the lateral hole will open, allowing fluid to pass through the pipeline connecting the travel piston rod 2 and the travel piston 7, so that the travel piston 7 can move up and down. When the valve needle 6 is closed, the lateral hole will close, preventing the fluid from passing through, thereby stopping the movement of the travel piston 7.

[0035] Furthermore, the other end of the travel piston rod 2 is connected to the regulating valve 1 .

[0036] Among them, the regulating valve can be adjusted by pressing or rotating.

[0037] The space A of the cylinder 3 above the floating piston 8 is filled with hydraulic oil, the space of the cylinder 3 below the floating piston 8 is connected with the space of the housing 4, the piston 9 is slidably sealed with the housing 4, the space B above the piston 9 is filled with high-pressure gas, and when the valve needle 6 closes the lateral hole, the stroke adjustment piston 7 is fixed in the original position due to the support of the hydraulic oil, and the stroke of the shock absorber is fixed at this time;

[0038] When the valve needle 6 opens the lateral hole and the shock-absorbing front fork is not manually pressed, the upper and lower fluids of the stroke piston 7 are connected, and the stroke piston rod 2 is pushed outward due to the pressure of the floating piston 8, and the stroke increases at this time;

[0039] When the stroke needs to be reduced, the valve needle 6 only needs to be controlled to open the lateral hole and the shock-absorbing front fork is manually pressed to the required stroke.

[0040] In another embodiment of the utility model, the positions of the elastic component and the adjustment component can be swapped up and down, and other conditions remain unchanged.

[0041] Beneficial effects of the utility model: the utility model connects the elastic component and the adjusting component in a coaxial series manner, so that the elastic component and the adjusting component share an air chamber, so that the user can change the hydraulic pressure by adjusting the valve needle 6 on the stroke piston rod 2 to achieve the effect of adjusting the stroke, wherein the adjusting stroke will not change the volume of the elastic component and will not affect the shock absorption curve of the shock-absorbing front fork.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A shock-absorbing front fork structure with adjustable stroke, characterized in that: include: The elastic component comprises a housing and a piston arranged in the housing, wherein the lower end of the piston is connected with a piston rod; The adjusting component is arranged at the upper end of the elastic component, and includes a cylinder body, a floating piston arranged in the cylinder body, a stroke piston rod and a valve needle. The upper end of the cylinder body is connected to a hollow stroke piston rod, and the valve needle is passed through the center of the stroke piston rod for adjusting the stroke.

2. The adjustable stroke shock absorbing front fork structure according to claim 1, characterized in that: A through hole is provided at the lower end of the shell, and the piston drives the piston rod to slide frictionally in the inner space of the shell through the through hole, so as to balance the air pressure in the elastic component space.

3. The adjustable stroke shock absorbing front fork structure according to claim 2, characterized in that: A second through hole is provided at the upper end of the shell, connecting the elastic component space with the space below the floating piston in the cylinder body.

4. The adjustable stroke shock absorbing front fork structure according to claim 3, characterized in that: A travel piston is provided at one end of the travel piston rod, and the travel piston is arranged inside the cylinder body.

5. The adjustable stroke shock absorbing front fork structure according to claim 4, characterized in that: A lateral hole is provided at the connection between the stroke piston rod and the stroke piston, and the lateral hole connects the stroke piston up and down.

6. The adjustable stroke shock absorbing front fork structure according to claim 5, characterized in that: The valve needle controls the opening and closing of the lateral hole.

7. The shock-absorbing front fork structure with adjustable stroke according to claim 5, characterized in that: The other end of the travel piston rod is connected with a regulating valve.

Images