High-reliability shock-absorbing front fork tube

Abstract

The utility model discloses a high reliability shock -absorbing front fork pipe, the utility model relates to vehicle shock -absorbing technical field. The shock -absorbing front fork pipe, including the connecting rod, the outer wall fixed connection of connecting rod has the first connecting block, the outer wall fixed connection of connecting rod has the second connecting block, the inner wall fixed connection of first connecting block has the slide rod, the inner wall sliding connection of second connecting block has the fixed link, the outer wall of fixed link is equipped with the spring, through the doublet fixed design of first limit block and second limit block in the fixed link outer wall, has provided the stable stress support point for spring, and limit block adopts high -strength alloy material and is fixed through the precision welding technology, avoids the displacement, the problem that falls or uneven stress of spring in high -frequency telescopic process, has strengthened the anti -fatigue performance and the connection reliability of overall structure, ensures still can keep stable structure state in long -term high -strength use.

Description

Technical Field

[0001] This utility model relates to the field of vehicle shock absorption technology, specifically a high-reliability shock-absorbing fork tube. Background Technology

[0002] In the field of modern vehicle engineering, the suspension fork tube, as a core component connecting the wheel and the vehicle body, directly affects the vehicle's driving safety, handling stability, and ride comfort. With the continuous expansion of vehicle usage scenarios, from urban commuting to complex road conditions such as off-road mountain biking and long-distance transportation, increasingly higher demands are being placed on the reliability and durability of the suspension fork tube.

[0003] Traditional shock absorber fork tube spring mounting structures often lack limiting devices. During high-frequency extension and contraction, the spring is prone to axial displacement or radial wobble, resulting in irregular friction between the spring and other components. This not only reduces the shock absorption effect but also accelerates the fatigue wear of the spring and shortens its service life. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a highly reliable shock-absorbing fork tube, which solves the problem that springs are prone to axial displacement or radial swaying during high-frequency extension and contraction, leading to irregular friction between the spring and other components.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a high-reliability shock-absorbing fork tube, comprising a connecting rod, wherein a first connecting block is fixedly connected to the outer wall of the connecting rod; a second connecting block is fixedly connected to the outer wall of the connecting rod, a sliding rod is fixedly connected to the inner wall of the first connecting block, a fixing rod is slidably connected to the inner wall of the second connecting block, and a spring is sleeved on the outer wall of the fixing rod.

[0008] Preferably, a first limiting block is fixedly connected to the outer wall of the fixing rod, and a second limiting block is fixedly connected to the outer wall of the fixing rod. The two limiting blocks are integrally formed from high-strength alloy material and are seamlessly connected to the outer wall of the fixing rod through a precision welding process, ensuring that there will be no loosening or falling off during long-term high-frequency vibration damping work.

[0009] Preferably, the inner wall of the fixed rod is provided with a sliding groove, and the sliding rod slides on the inner wall of the fixed rod. The inner wall of the fixed rod is specially provided with a sliding groove structure that is adapted to the sliding rod. The sliding groove is machined by milling process to ensure that the sliding rod can slide smoothly in the sliding groove, and to limit the radial displacement of the sliding rod to prevent shaking or displacement during shock absorption.

[0010] Preferably, one end of the spring is fixedly connected to the first limiting block, and the other end of the spring is fixedly connected to the second limiting block. When subjected to compressive force, the spring deforms uniformly between the two limiting blocks, and the elastic force is uniformly transmitted to the fixed rod and the connecting rod through the limiting blocks, realizing linear force transmission, avoiding local stress concentration, and making the entire shock absorption process smoother and more gentle.

[0011] Preferably, a rubber plug is fixedly connected to the bottom of the slide rod. The outer peripheral wall of the rubber plug is in contact with the inner wall of the slide groove, which can play an auxiliary sealing role during the sliding of the slide rod. The rubber plug also has a certain damping characteristic.

[0012] (III) Beneficial Effects

[0013] This invention provides a highly reliable shock-absorbing fork tube. It has the following beneficial effects:

[0014] (I) This high-reliability shock-absorbing fork tube, through the double fixing design of the first limiting block and the second limiting block on the outer wall of the fixed rod, provides a stable force support point for the spring. The limiting block is made of high-strength alloy material and fixed by precision welding process, which avoids the problem of spring displacement, falling off or uneven force during high-frequency extension and contraction, enhances the fatigue resistance and connection reliability of the overall structure, and ensures that it can maintain a stable structural state during long-term high-intensity use.

[0015] (II) This high-reliability shock-absorbing fork tube is fixedly connected to the first limit block and the second limit block at both ends of the spring, which ensures that the spring is subjected to uniform force during the extension and contraction process. It can convert external impact force into elastic potential energy, improve the shock absorption system's ability to buffer road bumps and impacts, and make the vehicle ride more stable and comfortable. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the connecting rod of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the first connecting block of this utility model.

[0019] In the diagram: 1. Connecting rod; 2. First connecting block; 3. Second connecting block; 4. Sliding rod; 5. Fixing rod; 6. Spring; 7. First limiting block; 8. Second limiting block. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-3 This utility model provides a technical solution: a high-reliability shock-absorbing fork tube, including a connecting rod 1, a first connecting block 2 fixedly connected to the outer wall of the connecting rod 1; a second connecting block 3 fixedly connected to the outer wall of the connecting rod 1, a sliding rod 4 fixedly connected to the inner wall of the first connecting block 2, a fixed rod 5 slidably connected to the inner wall of the second connecting block 3, a spring 6 sleeved on the outer wall of the fixed rod 5, a first limiting block 7 fixedly connected to the outer wall of the fixed rod 5, and a second limiting block 8 fixedly connected to the outer wall of the fixed rod 5. The two limiting blocks are integrally formed from high-strength alloy material and are seamlessly connected to the outer wall of the fixed rod 5 through a precision welding process, ensuring that there will be no loosening or falling off during long-term high-frequency shock absorption operation. A sliding groove is opened on the inner wall of the fixed rod 5, and the sliding rod 4 slides on the inner wall of the fixed rod 5. The sliding rod 4 has a specially designed groove structure on the inner wall of the fixed rod 5, which is machined by milling to ensure that the sliding rod 4 can slide smoothly in the groove and limit the radial displacement of the sliding rod 4 to prevent shaking or displacement during shock absorption. One end of the spring 6 is fixedly connected to the first limiting block 7, and the other end of the spring 6 is fixedly connected to the second limiting block 8. When subjected to compressive force, the spring 6 deforms uniformly between the two limiting blocks, and the elastic force is evenly transmitted to the fixed rod 5 and the connecting rod 1 through the limiting blocks, realizing linear force transmission and avoiding local stress concentration, making the entire shock absorption process smoother. A rubber plug is fixedly connected to the bottom of the sliding rod. The outer peripheral wall of the rubber plug fits against the inner wall of the groove, which can play an auxiliary sealing role during the sliding of the sliding rod. The rubber plug also has a certain damping characteristic.

[0022] During use, in the initial stage of impact force transmission, the connecting rod 1 drives the fixed rod 5 to generate axial displacement through the second connecting block 3 fixed to the outer wall. At this time, the sliding groove opened on the inner wall of the fixed rod 5 forms a precise sliding fit with the sliding rod 4 fixed by the first connecting block 2. The sliding rod 4 makes linear reciprocating motion along the sliding groove, which restricts the radial swing of the sliding rod 4 and ensures that the connecting rod 1 and the fixed rod 5 always maintain coaxial motion, avoiding additional mechanical wear or stress concentration due to misalignment. As relative motion occurs, the spring 6 sleeved on the outer wall of the fixed rod 5 begins to play a core shock absorption role. When the impact force brings the connecting rod 1 and the fixed rod 5 closer to each other, the distance between the first limiting block 7 and the second limiting block 8 on the outer wall of the fixed rod 5 shortens. The spring 6 is compressed and deformed by the double limiting blocks. Since the two ends of the spring 6 are fixed to the first limiting block 7 and the second limiting block 8 by high-temperature welding, the elastic force can be evenly transmitted to the fixed rod 5 and the connecting rod 1 through the limiting blocks. Spring 6 accumulates elastic potential energy, converting external impact force into deformation energy, thus achieving the first stage of energy buffering. When the impact force weakens or disappears, spring 6 begins to reset and extend based on its own elastic potential energy, pushing the first limiting block 7 and the second limiting block 8 to restore their initial distance. At this time, slide rod 4 slides in the opposite direction along the slide groove. A rubber plug is fixedly connected to the bottom of slide rod 4. The outer peripheral wall of the rubber plug is in contact with the inner wall of the slide groove. The rubber plug also has a certain damping characteristic, driving the connecting rod 1 and the fixed rod 5 back to their initial relative positions. During the process, the first limiting block 7 and the second limiting block 8 not only provide stable force support points for spring 6, but also strictly control the extension and contraction stroke of spring 6 through the limiting effect. When spring 6 is compressed to the limit position, the minimum distance between the limiting blocks prevents spring 6 from excessive deformation; when spring 6 is extended to the maximum stroke, the blocking effect of the limiting blocks prevents spring 6 from leaving the working range, fundamentally eliminating the risk of fatigue fracture caused by over-travel of spring 6.

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-reliability shock-absorbing fork tube, characterized in that: It includes a connecting rod (1), and a first connecting block (2) is fixedly connected to the outer wall of the connecting rod (1); The outer wall of the connecting rod (1) is fixedly connected to a second connecting block (3), the inner wall of the first connecting block (2) is fixedly connected to a sliding rod (4), the inner wall of the second connecting block (3) is slidably connected to a fixing rod (5), and the outer wall of the fixing rod (5) is sleeved with a spring (6).

2. The high-reliability shock-absorbing fork tube according to claim 1, characterized in that: The outer wall of the fixing rod (5) is fixedly connected to a first limiting block (7), and the outer wall of the fixing rod (5) is fixedly connected to a second limiting block (8).

3. The high-reliability shock-absorbing fork tube according to claim 1, characterized in that: The inner wall of the fixed rod (5) is provided with a sliding groove, and the sliding rod (4) slides on the inner wall of the fixed rod (5).

4. The high-reliability shock-absorbing fork tube according to claim 1, characterized in that: One end of the spring (6) is fixedly connected to the first limiting block (7), and the other end of the spring (6) is fixedly connected to the second limiting block (8).

5. A high-reliability shock-absorbing fork tube according to claim 1, characterized in that: A rubber plug is fixedly connected to the bottom of the slide bar (4).

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