Improved damping front fork

Abstract

The utility model relates to the technical field of damping devices, and discloses an improved damping front fork which comprises an upper fork bridge, two front fork sleeves and two spring seats, a vertical pipe is fixedly connected to the middle of the upper surface of the upper fork bridge, and front fork branch pipes are arranged in the front fork sleeves. The upper ends of the front fork branch pipes are fixedly connected with the middles of the two sides of the lower surface of the upper fork bridge, sealing rings are fixedly connected with the upper surfaces of the front fork sleeves, and guide sleeves are arranged in the front fork sleeves. The front fork branch pipe is connected with the upper bridge and the lower fixing piece and is in sliding fit with the front fork sleeve, a stable telescopic structure is constructed, stress is effectively transmitted and dispersed, structural stability under complex road conditions is guaranteed, the damping spring is connected with the spring seat and the fixing piece, vibration energy is efficiently absorbed and buffered, vibration impact is relieved through stretching and retracting of the front fork branch pipe, and the service life of the front fork branch pipe is prolonged. And the guide sleeve and the gasket assist the front fork branch pipe to slide stably, so that the performance of the damping system is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to shock absorber technical field especially relates to an improved shock absorbing front fork. BACKGROUND

[0002] The shock absorbing front fork is a special front fork design on bicycles, motorcycles and other vehicles, which mainly functions to effectively absorb and buffer the vibration from the ground while maintaining the stability and maneuverability of the vehicle, thereby significantly improving the comfort and performance of riding. The shock absorbing front fork usually contains components such as springs and dampers, which can reduce the impact of uneven road surfaces, protect the wrists and arms of the rider, and maintain good contact between the wheels and the ground, improving traction. According to different use scenarios and needs, there are various types of shock absorbing front forks, such as air shock absorbing and oil pressure shock absorbing, which are widely used on mountain bikes, off-road motorcycles and other vehicles that need to deal with complex road conditions.

[0003] The shock absorbing system of the traditional shock absorbing front fork usually lacks effective shock absorbing springs and damping adjustment mechanisms, resulting in poor shock absorbing effect and directly affecting the comfort of riding. In addition, the shock absorbing system of the traditional shock absorbing front fork may lack effective guiding and lubricating systems, causing large friction loss during the extension and contraction of the front fork, which not only affects the service life of the front fork, but also reduces its overall performance.

[0004] Therefore, the skilled person in the art provides an improved shock absorbing front fork to solve the problems raised in the background art. SUMMARY

[0005] The utility model discloses a kind of improved shock absorbing front forks to solve the problems existing in prior art, and the stable extension structure is constructed by front fork branch pipe upper connecting bridge, lower joint fixing piece and with front fork sleeve sliding fit, effectively transfer and disperse stress, guarantee the structural stability under complex road conditions, shock absorbing spring is connected spring seat and fixing piece, high-efficiency absorption buffering vibration energy, slow down vibration impact by front fork branch pipe extension, improve riding comfort and stability, guiding sleeve and washer help front fork branch pipe smooth sliding, improve shock absorbing system performance, sealing ring prevents impurities invasion, prolongs internal component service life.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] The improved damping front fork comprises an upper fork bridge, two front fork sleeves and two spring seats, the middle part of the upper surface of the upper fork bridge is fixedly connected with a vertical pipe, the interiors of the front fork sleeves are provided with front fork branch pipes, the upper ends of the front fork branch pipes are fixedly connected with the middle parts of the lower surfaces of the upper fork bridge on both sides, the upper surfaces of the front fork sleeves are fixedly connected with sealing rings, the interiors of the front fork sleeves are provided with guide sleeves, the lower surfaces of the guide sleeves are fixedly connected with gaskets, the lower surfaces of the front fork sleeves are fixedly connected with the spring seats, the inner walls of the middle parts of the spring seats are fixedly connected with screw caps, the inner walls of the middle parts of the screw caps are threadedly connected with screw rods, the outer walls of the upper ends of the screw rods are fixedly connected with fixing pieces, the upper surfaces of the spring seats are fixedly connected with damping springs, and the lower surfaces of the front fork branch pipes are fixedly connected with the upper surfaces of the fixing pieces.

[0008] Through the technical scheme, the vertical pipe is fixedly connected with the upper fork bridge, a firm connection basis is built for the front fork and the frame, and the upper force during vehicle driving can be reliably borne, the front fork branch pipe is connected with the upper bridge and the fixing piece and is in sliding cooperation with the front fork sleeve, a stable telescopic structure is constructed, stress is effectively transmitted and dispersed, structural stability under complex road conditions is ensured, the damping spring is connected with the spring seat and the fixing piece, vibration energy is efficiently absorbed and buffered, vibration impact is reduced through the telescopic front fork branch pipe, riding comfort and stability are improved, the guide sleeve and the gasket assist the front fork branch pipe to slide stably, the performance of the damping system is improved, the sealing ring prevents impurities from invading, the service life of the internal components is prolonged, the screw cap, the screw rod and the fixing piece realize fastening and are convenient to maintain, the front fork branch pipe and the front fork sleeve slide and the guide sleeve guides, the telescopic track of the front fork branch pipe is ensured to be accurate, vehicle controllability is enhanced, and the gasket also optimizes the motion performance of the front fork branch pipe, ensuring that the damping system works accurately under different working conditions.

[0009] Further, the middle part of the upper end of the front fork sleeve is provided with a connecting plate, the outer walls of the two sides of the lower end of the connecting plate are fixedly connected with the outer walls of the two adjacent sides of the upper end of the front fork sleeve.

[0010] Through the technical scheme, the two front fork sleeves are connected by the connecting plate, the originally independent two sleeves are connected into a more stable whole, external forces from different directions can be effectively resisted, deformation of the sleeve when subjected to force is reduced, the strength and rigidity of the whole front fork structure are enhanced, and the stability of the front fork during vehicle driving is ensured.

[0011] Further, the adjacent two sides of the lower surface of the spring seat are fixedly connected with fork legs.

[0012] Through the technical scheme, the fork legs are used for mounting a wheel shaft, and then fixing a wheel.

[0013] Further, the vertical pipe is fixed to the upper fork bridge by welding.

[0014] Through the technical scheme, the welding is a permanent connection mode, and can form a high-strength connection between the vertical pipe and the upper fork bridge.

[0015] Further, the outer walls of the front fork sub-pipes are in sliding fit with the inner walls of the front fork sleeve pipes.

[0016] Through the technical scheme, the sliding fit design can ensure the accuracy and linearity of the front fork sub-pipes during movement, and the front fork sleeve pipes provide accurate guiding for the front fork sub-pipes, so that the front fork sub-pipes can maintain stable movement tracks during extension and contraction, and shaking or deviation is avoided, and the control performance and driving safety of the vehicle are ensured.

[0017] Further, the inner walls of the sealing rings are in sliding fit with the outer walls of the front fork sub-pipes.

[0018] Through the technical scheme, the sealing ring can effectively prevent dust, soil, rainwater and other impurities from entering the inside of the front fork sleeve pipe, avoid the impurities from causing abrasion and corrosion to the front fork sub-pipes, shock-absorbing springs and guiding sleeves, and can seal the lubricating oil in the inside of the front fork sleeve pipe, reduce leakage of the lubricating oil, ensure that the lubricating oil can continuously lubricate the sliding parts between the front fork sub-pipes and the front fork sleeve pipe, reduce the friction coefficient, make the extension and contraction of the front fork more smooth, and make the shock-absorbing effect more stable.

[0019] Further, the shock-absorbing springs are located at the lower ends in the inside of the front fork sleeve pipes, and the upper ends of the shock-absorbing springs are fixedly connected with the lower surfaces of the fixing members.

[0020] Through the technical scheme, the shock-absorbing springs can provide buffering protection for the front fork sleeve pipes, the front fork sub-pipes and other components when the shock-absorbing springs are vibrated, the damage of the components caused by directly bearing impact force is reduced, and the service life of the components of the front fork is prolonged.

[0021] Further, the guiding sleeves and the gaskets are sleeved on the outside of the fixing members, and the outer walls of the guiding sleeves and the gaskets are in sliding fit with the inner walls of the front fork sleeve pipes.

[0022] Through the technical scheme, the guiding sleeves provide guiding for the fixing members and the front fork sub-pipes connected with the fixing members, ensure the stability of the fixing members and the front fork sub-pipes during linear extension and contraction in the sleeve pipes, reduce shaking and friction, and improve the stability and accuracy of the shock-absorbing system.

[0023] The utility model has the advantages of the following beneficial effects:

[0024] The utility model provides a kind of improved shock-absorbing front fork, and the front fork branch pipe is slidably connected with the front fork sleeve by upper connecting bridge and lower connecting fixed part, to build stable telescopic structure, effectively transmit and disperse stress, ensure the structural stability under complex road conditions, shock-absorbing spring is connected with spring seat and fixed part, efficiently absorbs and buffers vibration energy, front fork branch pipe telescopic reduces vibration impact, improves riding comfort and stability, guide sleeve and gasket help front fork branch pipe to slide smoothly, improve shock-absorbing system performance, sealing ring prevents impurities from invading, prolongs the service life of internal components, screw cap, screw rod and fixed part realize fastening and be convenient for maintenance, front fork branch pipe and front fork sleeve slide and guide sleeve guide, ensure that front fork branch pipe telescopic trajectory is accurate, enhance vehicle controllability, gasket assists guide sleeve, direct contact between buffer components, reduce friction loss in sliding process, and the shock-absorbing front fork can be designed as 8.5 inch and 10 inch two sizes. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is an isometric view of the improved shock-absorbing front fork of the utility model;

[0026] Figure 2 It is an exploded view of the improved shock-absorbing front fork of the utility model;

[0027] Figure 3 It is a partial structure exploded view of the improved shock-absorbing front fork of the utility model;

[0028] Figure 4 It is a partial structure cross-sectional view of the improved shock-absorbing front fork of the utility model;

[0029] Figure 5 It is a top view of the improved shock-absorbing front fork of the utility model.

[0030] LEGEND:

[0031] 1, vertical pipe; 2, upper fork bridge; 3, front fork sleeve; 4, front fork branch pipe; 401, sealing ring; 402, fixed part; 5, guide sleeve; 501, gasket; 6, spring seat; 601, screw cap; 602, screw rod; 603, shock-absorbing spring; 7, fork leg; 8, connecting plate. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0033] Referring to Figure 2 , Figure 3 and Figure 4 , the utility model provides a kind of concrete implementation: a kind of improved shock-absorbing front fork, including upper fork bridge 2, two front fork sleeve pipes 3 and two spring seats 6, the middle part of the upper surface of upper fork bridge 2 is fixedly connected with standpipe 1, the inside of front fork sleeve pipe 3 is all provided with front fork branch pipe 4, and the upper end of front fork branch pipe 4 is all fixedly connected with the middle part of the lower surface both sides of upper fork bridge 2, and the upper surface of front fork sleeve pipe 3 is all fixedly connected with sealing ring 401, and the inside of front fork sleeve pipe 3 is all provided with guide sleeve 5, and the lower surface of guide sleeve 5 is all fixedly connected with washer 501, and the lower surface of front fork sleeve pipe 3 is all fixedly connected with spring seat 6, and the inner wall of the middle part of spring seat 6 is all fixedly connected with screw cap 601, and the inner wall of the middle part of the upper end of screw cap 601 is all threadedly connected with screw rod 602, and the outer wall of the upper end of screw rod 602 is all fixedly connected with fixed part 402, and the upper surface of spring seat 6 is all fixedly connected with shock-absorbing spring 603, and the lower surface of front fork branch pipe 4 is all fixedly connected with the upper surface of fixed part 402, and be fixedly connected with upper fork bridge 2 by standpipe 1, and the solid connection foundation is built for front fork and frame, and reliable withstands the force from above when vehicle travels, and front fork branch pipe 4 is connected with bridge, and fixed part 402 is connected with front fork sleeve pipe 3 and is slidably connected, and stable telescopic structure is built, and stress is effectively transferred and dispersed, and the structural stability under complex road conditions is guaranteed, and shock-absorbing spring 603 connects spring seat 6 and fixed part 402, and efficiently absorbs and buffers vibration energy, and the vibration impact is reduced by the telescopic front fork branch pipe 4, and the riding comfort and stability are improved, and guide sleeve 5 and washer 501 assist front fork branch pipe 4 to slide stably, and the performance of damping system is improved, and sealing ring 401 prevents impurities from invading, and prolongs the service life of internal components, and screw cap 601, screw rod 602 and fixed part 402 realize fastening and are convenient to maintain, and front fork branch pipe 4 and front fork sleeve pipe 3 slide and guide sleeve 5 guides, ensure that the telescopic trajectory of front fork branch pipe 4 is accurate, enhance the controllability of vehicle, and washer 501 assists guide sleeve 5, and direct contact between buffering components is buffered, and the friction loss in sliding process is reduced.

[0034] Referring to Figure 1 , Figure 2 and Figure 5The middle part of the upper end of the front fork sleeve pipe 3 is provided with a connecting plate 8, the lower end of the outer wall of the connecting plate 8 is fixedly connected with the outer wall of the adjacent two sides of the upper end of the front fork sleeve pipe 3, the two front fork sleeve pipes 3 are connected through the connecting plate 8, the originally independent two sleeve pipes are connected into a more stable whole, the deformation of the sleeve pipe when being subjected to force can be effectively resisted, the strength and rigidity of the whole front fork structure are enhanced, the stability of the front fork during the driving process of the vehicle is ensured, the adjacent two sides of the lower surface of the spring seat 6 are fixedly connected with fork legs 7, the fork legs 7 are used for installing a wheel shaft, and then a wheel is fixed, the vertical pipe 1 is fixed to the upper fork bridge 2 through welding, the welding is a kind of permanent connection mode, and a high-strength connection can be formed between the vertical pipe 1 and the upper fork bridge 2.

[0035] With reference to Figure 1 , Figure 2 and Figure 3 , the outer walls of the front fork branch pipes 4 are slidably attached to the inner walls of the front fork sleeve pipes 3, the sliding attachment design can ensure the precision and linearity of the front fork branch pipes 4 during movement, the front fork sleeve pipes 3 provide accurate guiding for the front fork branch pipes 4, so that the front fork branch pipes 4 can maintain a stable movement track during extension and contraction, and shaking or deviation is avoided, the control performance and driving safety of the vehicle are ensured, the inner walls of the sealing rings 401 are slidably attached to the outer walls of the front fork branch pipes 4, the sealing rings 401 can effectively prevent dust, soil, rainwater and other impurities from entering the inside of the front fork sleeve pipes 3, avoid the impurities from causing abrasion and corrosion to the front fork branch pipes 4, the damping springs 603 and the guide sleeves 5, and the lubricating oil in the front fork sleeve pipes 3 can be sealed inside, the leakage of the lubricating oil is reduced, the lubricating oil can continuously lubricate the sliding parts between the front fork branch pipes 4 and the front fork sleeve pipes 3, the friction coefficient is reduced, the extension and contraction movement of the front fork is smoother, and the damping effect is more stable, the damping springs 603 are located at the lower ends in the inside of the front fork sleeve pipes 3, the upper ends of the damping springs 603 are fixedly connected with the lower surfaces of the fixing members 402, in this way, the damping springs 603 can provide buffering protection for the front fork sleeve pipes 3, the front fork branch pipes 4 and other components when being vibrated, the damage of these components caused by directly bearing impact force is reduced, and the service life of the front fork components is prolonged, the guide sleeves 5 and the gaskets 501 are sleeved on the outside of the fixing members 402, the outer walls of the guide sleeves 5 and the gaskets 501 are slidably attached to the inner walls of the front fork sleeve pipes 3, the guide sleeves 5 provide guiding for the fixing members 402 and the front fork branch pipes 4 connected with the fixing members 402, the stability of the fixing members 402 and the front fork branch pipes 4 during the linear extension and contraction movement in the front fork sleeve pipes 3 is ensured, shaking and friction are reduced, and the stability and precision of the damping system are improved, the gaskets 501 assist the guide sleeves 5, buffer the direct contact between components, and reduce the friction loss during sliding.

[0036] Working principle: when the vehicle encounters bumpy road during driving, the impact force of the wheel is first transmitted to the spring seat 6 through the fork leg 7, at this time, the shock spring 603 begins to play a role, since its upper end is connected with the fixed part 402, and the lower end is fixed to the spring seat 6, after being impacted, it will be compressed, and the kinetic energy of the vibration will be converted into elastic potential energy, which has the effect of initial buffering, in the process of spring compression, the fixed part 402 moves downward, the front fork branch pipe 4 connected with the fixed part 402 also slides smoothly in the front fork sleeve pipe 3 with the aid of the guide sleeve 5 and the gasket 501, the upper end of the front fork branch pipe 4 is fixed with the upper fork bridge 2, and the upper fork bridge 2 is connected with the frame through the vertical pipe 1, so that the vibration is transmitted to the entire front fork and the frame, at the same time, the sealing ring 401 closely adheres to the outer wall of the front fork branch pipe 4, preventing foreign matter from entering the inside of the front fork sleeve pipe 3 and interfering with the damping process, when the vibration is weakened, the shock spring 603 begins to rebound, and pushes the fixed part 402 and the front fork branch pipe 4 to reset upward, completing a damping cycle, so as to continuously absorb and buffer the vibration during driving, and ensure the stability of riding.

[0037] Finally, it should be pointed out that: the above only for the preferred specific embodiments of the utility model, and does not limit the utility model, although the utility model is described in detail with reference to the foregoing specific embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each specific embodiment, or equivalent replacement to part of technical features, any modification, equivalent replacement, improvement etc. that is made within the spirit and principles of the utility model, should be contained in the protection scope of the utility model.

Claims

1. An improved suspension fork comprising an upper bridge (2), two fork crowns (3) and two spring seats (6), characterized in that: The upper surface of the upper fork bridge (2) is fixedly connected with a vertical pipe (1), the inside of the front fork sleeve pipe (3) is provided with a front fork branch pipe (4), the upper end of the front fork branch pipe (4) is fixedly connected with the middle part of the lower surface of the upper fork bridge (2), the upper surface of the front fork sleeve pipe (3) is fixedly connected with a sealing ring (401), the inside of the front fork sleeve pipe (3) is provided with a guide sleeve (5), the lower surface of the guide sleeve (5) is fixedly connected with a gasket (501), the lower surface of the front fork sleeve pipe (3) is fixedly connected with a spring seat (6), the inner wall of the middle part of the spring seat (6) is fixedly connected with a screw cap (601), the inner wall of the middle part of the upper end of the screw cap (601) is threadedly connected with a screw rod (602), the outer wall of the upper end of the screw rod (602) is fixedly connected with a fixing part (402), the upper surface of the spring seat (6) is fixedly connected with a damping spring (603), and the lower surface of the front fork branch pipe (4) is fixedly connected with the upper surface of the fixing part (402).

2. The improved suspension fork of claim 1 wherein: The middle part of the upper end of the front fork sleeve pipe (3) is provided with a connecting plate (8), and the outer wall of the lower end of the connecting plate (8) is fixedly connected with the outer wall of the adjacent two sides of the upper end of the front fork sleeve pipe (3).

3. The improved suspension fork of claim 1 wherein: The lower surface of the spring seat (6) is fixedly connected with a fork leg (7).

4. The improved suspension fork of claim 1 wherein: The vertical pipe (1) is fixed to the upper fork bridge (2) by welding.

5. The improved suspension fork of claim 1 wherein: The outer wall of the front fork branch pipe (4) is in sliding fit with the inner wall of the front fork sleeve pipe (3).

6. The improved suspension fork of claim 1 wherein: The inner wall of the sealing ring (401) is in sliding fit with the outer wall of the front fork branch pipe (4).

7. The improved suspension fork of claim 1 wherein: The damping spring (603) is located at the lower end inside the front fork sleeve pipe (3), and the upper end of the damping spring (603) is fixedly connected with the lower surface of the fixing part (402).

8. The improved suspension fork of claim 1 wherein: The guide sleeve (5) and the gasket (501) are sleeved outside the fixing part (402), and the outer wall of the guide sleeve (5) and the gasket (501) is in sliding fit with the inner wall of the front fork sleeve pipe (3).

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