A bumper structure on a shock absorber connecting rod

Abstract

The application relates to the technical field of shock absorbers, in particular to a buffer structure on a connecting rod of a shock absorber, which comprises a buffer main body, an adjusting assembly and a supporting assembly. The buffer main body comprises a shell, a sliding groove, a guide hole and a limiting block; the adjusting assembly comprises an elastic sheet, a sliding block, a connecting shaft, a torsional spring and an adjusting ring, the initial tension of the elastic sheet is adjusted by rotating the adjusting ring to adapt to different impact forces; the supporting assembly comprises a supporting ring, a supporting rod, a locking nut and an antiskid pad, the stability is enhanced and the vibration transmission is reduced. The utility model improves the durability and the fatigue resistance by optimizing the structure design and the material, simultaneously simplifies the assembly process, and reduces the manufacturing cost. The buffer structure has excellent dynamic adaptability and reliability, is suitable for complex working conditions, and is convenient to install and maintain.

Description

Technical Field

[0001] This utility model belongs to the field of shock absorber technology, specifically a buffer structure on a shock absorber connecting rod. Background Technology

[0002] With the continuous development of shock absorber technology, buffer structures are increasingly widely used in various mechanical devices. However, existing buffer structures still have some shortcomings when applied to shock absorber connecting rods, especially in meeting the requirements for buffering performance, ease of installation, and durability under complex working conditions.

[0003] A search revealed a buffer structure with publication number CN119641850B, published on May 6, 2025. This design utilizes an elastic plate, a damping plate, and a guide rod. The deformation of the elastic plate drives a rotating component, which in turn twists a torsion spring fitted onto the damping sleeve, gradually dissipating impact energy. While this structure effectively reduces the rebound velocity of the elastic plate and improves the buffering effect, its complex component design leads to high assembly difficulty and requires extremely high precision in the fit between the guide rod and the damping sleeve. Furthermore, the torsion spring and damping sleeve are prone to wear over long-term use, potentially causing a decrease in buffering performance and affecting the overall service life. Therefore, this design is insufficient to meet the high reliability requirements of scenarios involving frequent use.

[0004] A search revealed a buffer structure with publication number CN113819036B, published on August 2, 2024. This design reduces vibration transmission and improves noise reduction by incorporating through-hole buffers within the vibration damping body and adding ribs to the inner wall of these holes. However, the main problem with this design is the relatively simple structure of the buffer holes, which cannot be dynamically adjusted according to different impact forces, resulting in limited buffering effectiveness against larger impacts. Furthermore, while the ribs help reduce vibration transmission, their complex manufacturing process increases costs, and they may lose their original function due to material fatigue after prolonged use. Therefore, this design is significantly inadequate in dealing with high-intensity impacts and ensuring long-term stability.

[0005] The aforementioned problems indicate that current buffer structures used in shock absorber connecting rods generally suffer from complex assembly, short service life, and insufficient adaptability in terms of buffering performance. Therefore, this invention provides a buffer structure for shock absorber connecting rods, aiming to improve buffering performance, simplify assembly processes, and enhance durability through optimized structural design to meet diverse needs in practical applications. Utility Model Content

[0006] This utility model relates to a buffer structure on a shock absorber connecting rod, comprising a buffer body, an adjustment component, and a support component. The adjustment component is installed inside the buffer body, and the support component is installed on the outside of the buffer body.

[0007] The buffer body includes a shell, a sliding groove, a guide hole, and limiting blocks. The shell is a hollow cylindrical structure with symmetrical sliding grooves on its inner wall. The sliding grooves extend along the axial direction of the shell, and limiting blocks are provided at both ends of the sliding grooves. A guide hole is provided at the center of the top of the shell, and the guide hole passes through the upper and lower ends of the shell.

[0008] The adjusting assembly includes an elastic plate, a slider, a connecting shaft, a torsion spring, and an adjusting ring. The slider is symmetrically installed in the slide groove, with one end fixedly connected to one side of the elastic plate, and the other side of the elastic plate hinged to the inner wall of the housing via the connecting shaft. A torsion spring is sleeved on the outer side of the connecting shaft, with one end fixed to the outer wall of the connecting shaft and the other end fixed to the inner wall of the housing. The adjusting ring is sleeved on the outer side of the housing, and its inner wall is threadedly connected to the outer side of the slider. Rotation of the adjusting ring causes the slider to move along the slide groove.

[0009] The support assembly includes a support ring, support rods, a locking nut, and an anti-slip pad. The support ring is fitted onto the outer bottom of the housing. Support rods are evenly distributed and fixed to the outer wall of the support ring, and the ends of the support rods are fixed to the outer wall of the housing by locking nuts. An anti-slip pad is provided at the bottom of the support ring, and the anti-slip pad is fixed to the bottom end of the support ring by bolts.

[0010] Mounting plates are symmetrically fixed to the outer top of the housing. Mounting holes are provided on the mounting plates for fixing the buffer structure to the shock absorber connecting rod. A through hole is provided at the center of the bottom of the housing. The through hole is coaxial with the guide hole, and the diameter of the through hole is larger than the diameter of the guide hole.

[0011] The elastic sheet is made of high-elasticity alloy steel, and its surface is coated with a wear-resistant coating. The thickness of the elastic sheet gradually decreases along its length, with a thicker end near the connecting shaft and a thinner end away from the connecting shaft. Ball bearings are provided on the outer side of the slider, and these ball bearings are embedded in the inner wall of the slide groove. The slider is slidably connected to the slide groove via the ball bearings.

[0012] The adjusting ring has anti-slip textures on its outer side, which are evenly distributed around its circumference. The inner wall of the adjusting ring has threaded grooves that engage with the outer thread of the slider. There are four support rods, each with an adjustable length and a threaded end that connects to a locking nut.

[0013] The anti-slip mat is made of rubber, and its surface has raised stripes that are evenly distributed radially. There are two mounting plates connected by reinforcing ribs, each with a triangular cross-section.

[0014] This invention utilizes an adjustment component to absorb impact energy through the deformation of an elastic sheet. Simultaneously, the position of the slider is adjusted by rotating an adjustment ring, thereby changing the initial tension of the elastic sheet and achieving dynamic adaptation to different impact forces. This design avoids the limitation of single-function buffering in existing technologies and improves the adaptability of the buffering effect.

[0015] This invention enhances the stability of the housing by incorporating a support assembly, utilizing support rings and support rods, while simultaneously reducing vibration transmission and noise through anti-slip pads. This design simplifies the assembly process, reduces the number of parts, and lowers manufacturing costs and assembly difficulty.

[0016] This invention improves the durability and fatigue resistance of the elastic sheet by optimizing its material and structure, thus extending the service life of the cushioning structure. Simultaneously, the cooperation between the ball bearings and the sliding groove reduces the frictional resistance of the slider during sliding, further enhancing the cushioning performance.

[0017] This invention enhances the overall strength of the buffer structure by incorporating a mounting plate and reinforcing ribs, ensuring its reliability under complex operating conditions. Simultaneously, the design of the mounting holes facilitates quick and easy installation of the buffer structure onto the shock absorber connecting rod, improving installation convenience.

[0018] In summary, this utility model solves the problems of insufficient buffering performance, complex assembly, and poor durability in the prior art by the synergistic effect of the adjusting component, the supporting component, and the buffer body, and provides a buffer structure on the shock absorber connecting rod that is simple in structure, has superior performance, and is easy to maintain. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the outer structure of the elastic sheet.

[0021] Figure 3 This is a schematic diagram of the outer structure of the adjusting ring.

[0022] Figure 4 This is a schematic diagram of the outer structure of the reinforcing rib.

[0023] The attached figures are labeled as follows: 1. Housing; 2. Slide groove; 3. Guide hole; 4. Limiting block; 5. Elastic sheet; 6. Slider; 7. Connecting shaft; 8. Torsion spring; 9. Adjusting ring; 10. Support ring; 11. Support rod; 12. Locking nut; 13. Anti-slip pad; 14. Mounting plate; 15. Mounting hole; 16. Through hole; 17. Ball bearing; 18. Anti-slip texture; 19. Threaded groove; 20. Threaded section; 21. Raised stripe; 22. Reinforcing rib. Detailed Implementation

[0024] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] Specific implementation examples are given below.

[0026] like Figures 1 to 3 As shown in the figure, this utility model provides a buffer structure on a shock absorber connecting rod, which includes a buffer body, an adjustment component, and a support component. The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0027] The buffer body consists of a shell 1, a sliding groove 2, a guide hole 3, and a limiting block 4. The shell 1 is a hollow cylindrical structure with two symmetrically arranged sliding grooves 2 on its inner wall. The sliding grooves 2 extend axially along the shell 1 and have limiting blocks 4 at both ends. The limiting blocks 4 restrict the movement range of the slider 6, preventing it from disengaging from the sliding groove 2. A guide hole 3 is located at the center of the top of the shell 1, penetrating both the upper and lower ends of the shell 1, for guiding the installation of external connecting parts. A through hole 16 is located at the center of the bottom of the shell 1, coaxial with the guide hole 3, and its diameter is larger than that of the guide hole 3, to facilitate the installation and positioning of the shock absorber connecting rod. Two mounting plates 14 are symmetrically fixed to the outer top of the shell 1. Mounting holes 15 are provided on the mounting plates 14 for fixing the buffer structure to the shock absorber connecting rod. The two mounting plates 14 are connected by reinforcing ribs 22, which have a triangular cross-section to enhance the overall strength of the mounting plates 14.

[0028] The adjusting assembly includes an elastic plate 5, a slider 6, a connecting shaft 7, a torsion spring 8, and an adjusting ring 9. The slider 6 is symmetrically installed within the slide groove 2. One end of the slider 6 is fixedly connected to one side of the elastic plate 5, and the other end is slidably connected to the slide groove 2 via a ball bearing 17. The ball bearing 17 is embedded in the inner wall of the slide groove 2, reducing the frictional resistance of the slider 6 during sliding and ensuring smooth movement along the slide groove 2. The other side of the elastic plate 5 is hinged to the inner wall of the housing 1 via the connecting shaft 7. A torsion spring 8 is sleeved on the outer side of the connecting shaft 7, with one end fixed to the outer wall of the connecting shaft 7 and the other end fixed to the inner wall of the housing 1. The torsion spring 8 provides initial tension to the elastic plate 5, allowing it to maintain a certain bending state when not subjected to external force. The adjusting ring 9 is sleeved on the outer side of the housing 1, and its inner wall has a threaded groove 19 that engages with the outer thread of the slider 6. By rotating the adjusting ring 9, the slider 6 can be moved along the slide groove 2, thereby changing the initial tension of the elastic plate 5. The outer side of the adjusting ring 9 is provided with anti-slip texture 18, which is evenly distributed along the circumference of the adjusting ring 9 to facilitate manual operation by the user.

[0029] The support assembly includes a support ring 10, support rods 11, a locking nut 12, and an anti-slip pad 13. The support ring 10 is fitted onto the outer bottom of the housing 1. Four support rods 11 are evenly distributed and fixed to the outer wall of the support ring 10. The ends of the support rods 11 are fixed to the outer wall of the housing 1 via locking nuts 12. The length of the support rods 11 is adjustable, and each end has a threaded section 20, which is threadedly connected to the locking nut 12. By adjusting the position of the locking nut 12, the length of the support rods 11 can be changed to adapt to different installation requirements. An anti-slip pad 13 is provided at the bottom of the support ring 10 and is fixed to the bottom end of the support ring 10 with bolts. The anti-slip pad 13 is made of rubber and has raised stripes 21 on its surface. The raised stripes 21 are evenly distributed radially along the anti-slip pad 13 to increase the friction between the anti-slip pad 13 and the contact surface, reducing vibration transmission.

[0030] The working principle of this utility model is as follows: When the shock absorber connecting rod is impacted, the impact force is transmitted to the elastic plate 5 inside the housing 1 through the guide hole 3. The elastic plate 5 deforms under the action of the impact force, absorbing and dispersing the impact energy. The elastic plate 5 is made of high-elasticity alloy steel, and its surface is coated with a wear-resistant coating. The thickness of the elastic plate 5 gradually decreases along its length, with a larger thickness at the end near the connecting shaft 7 and a smaller thickness at the end away from the connecting shaft 7. This design allows the elastic plate 5 to produce non-linear deformation characteristics when subjected to force, thereby better adapting to different sizes of impact forces. At the same time, by rotating the adjusting ring 9, the position of the slider 6 can be adjusted, thereby changing the initial tension of the elastic plate 5. When a larger impact force is required, the adjusting ring 9 can be rotated clockwise to move the slider 6 outward along the slide groove 2, increasing the initial tension of the elastic plate 5; when a smaller impact force is required, the adjusting ring 9 can be rotated counterclockwise to move the slider 6 inward along the slide groove 2, decreasing the initial tension of the elastic plate 5.

[0031] The support assembly enhances the stability of the housing 1 while reducing vibration transmission. When the housing 1 is subjected to impact, the support ring 10 and the support rod 11 share the impact force, preventing excessive deformation of the housing 1. The rubber material and raised stripe 21 design of the anti-slip pad 13 effectively reduce vibration transmission and lower noise. In addition, the adjustable length design of the support rod 11 allows the support assembly to adapt to different installation environments, improving the versatility of the buffer structure.

[0032] The design of mounting plate 14 and reinforcing rib 22 further enhances the overall strength of the buffer structure. There are two mounting plates 14, connected by reinforcing rib 22. The reinforcing rib 22 has a triangular cross-section, effectively resisting the impact of external forces on the buffer structure. The design of the mounting hole 15 facilitates quick installation of the buffer structure onto the shock absorber connecting rod, improving installation convenience.

[0033] The buffer structure of this invention achieves dynamic adaptation to different impact forces through the synergistic effect of the aforementioned components, solving the problem of limited buffering performance in existing technologies. Simultaneously, by optimizing the material and structure of the elastic sheet 5, its durability and fatigue resistance are improved, extending the service life of the buffer structure. The cooperation between the ball bearing 17 and the groove 2 reduces the frictional resistance of the slider 6 during sliding, further enhancing the buffering performance. The design of the support components simplifies the assembly process, reduces the number of parts, and lowers manufacturing costs and assembly difficulty. To enable those skilled in the art to more fully understand and implement this invention, the following supplementary explanation of the actual operating principle of the buffer structure is provided in conjunction with specific application scenarios.

[0034] First, the shock absorber connecting rod is inserted into the housing 1 through the guide hole 3 and positioned using the through hole 16. Then, the entire buffer structure is fixed to the designated position of the shock absorber connecting rod using bolts through the mounting holes 15 on the mounting plate 14. During this process, the design of the reinforcing rib 22 effectively enhances the overall strength of the mounting plate 14, ensuring that the buffer structure can withstand significant external impact after installation. The support rod 11 in the support assembly has its length adjustable via the locking nut 12 to adapt to different installation environments. Simultaneously, the anti-slip pad 13 fits tightly against the contact surface, and its raised stripes 21 increase friction, further reducing vibration transmission.

[0035] When the shock absorber connecting rod is subjected to an external impact, the impact force is transmitted to the elastic plate 5 inside the housing 1 through the guide hole 3. At this time, the elastic plate 5 undergoes bending deformation, absorbing and dispersing the impact energy. Since the thickness of the elastic plate 5 gradually decreases along its length, with the end closer to the connecting shaft 7 being thicker and the end farther away being thinner, it exhibits nonlinear deformation characteristics under stress. This design allows the elastic plate 5 to automatically adjust the degree of deformation according to the magnitude of the impact force, thereby better adapting to the buffering requirements under different working conditions.

[0036] Meanwhile, the rotation of the adjusting ring 9 drives the slider 6 to move along the groove 2. The slider 6 engages with the inner wall of the groove 2 via the ball bearings 17, significantly reducing frictional resistance during sliding and ensuring smooth movement. When dealing with larger impact forces, rotating the adjusting ring 9 clockwise moves the slider 6 outward along the groove 2, increasing the initial tension of the elastic plate 5; conversely, rotating the adjusting ring 9 counterclockwise decreases the initial tension of the elastic plate 5. This adjustment mechanism allows the buffer structure to dynamically adapt to different impact forces, solving the problem of limited performance in traditional buffer structures.

[0037] Under impact, the support ring 10 and support rod 11 in the support assembly share the impact load, preventing the housing 1 from failing due to excessive deformation. The adjustable design of the support rod 11 not only improves the versatility of the buffer structure but also simplifies the assembly process. In addition, the rubber material and raised stripe 21 design of the anti-slip pad 13 effectively reduce vibration transmission, lower noise, and further improve overall performance.

[0038] Through the synergistic effect of the aforementioned components, the buffer structure achieves dynamic adaptation to different impact forces. The high-elasticity alloy steel material of the elastic sheet 5 and the application of its wear-resistant coating significantly improve its durability and fatigue resistance, extending its service life. The cooperation between the ball bearing 17 and the groove 2 further optimizes the motion performance of the slider 6, reduces wear, and enhances the buffering effect. The design of the mounting plate 14 and the reinforcing rib 22 enhances the overall strength of the buffer structure, ensuring its reliability under complex working conditions.

[0039] In summary, through specific structural design and operating principles, this utility model achieves dynamic adjustment of buffering performance, improved assembly convenience, and enhanced durability in practical applications, meeting the needs of diverse scenarios. The above description is merely a specific illustration of preferred embodiments; any modifications or improvements made within the spirit and principles of this utility model should be included within its protection scope.

[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A buffer structure on a shock absorber connecting rod, characterized in that, The system includes a buffer body, an adjustment component, and a support component. The buffer body includes a housing (1), a groove (2), a guide hole (3), and a limiting block (4). The housing (1) is a hollow cylindrical structure with symmetrically arranged grooves (2) on its inner wall. The grooves (2) extend along the axial direction of the housing (1). Limiting blocks (4) are provided at both ends of the grooves (2). A guide hole (3) is provided at the center of the top of the housing (1), and a through hole (16) is provided at the center of the bottom of the housing (1). The through hole (16) and the guide hole (3) are coaxially arranged. The adjustment component includes an elastic plate (5), a slider (6), a connecting shaft (7), a torsion spring (8), and an adjustment ring (9). The slider (6) is symmetrically installed in the groove (2). One end of the slider (6) is connected to the elastic plate. One side of the elastic plate (5) is fixedly connected, and the other side of the elastic plate (5) is hinged to the inner wall of the housing (1) through the connecting shaft (7). A torsion spring (8) is sleeved on the outer side of the connecting shaft (7). An adjusting ring (9) is sleeved on the outer side of the housing (1). The inner wall of the adjusting ring (9) is threadedly connected to the outer side of the slider (6). The support assembly includes a support ring (10), a support rod (11), a locking nut (12), and an anti-slip pad (13). The support ring (10) is sleeved on the bottom outer side of the housing (1). Support rods (11) are evenly distributed and fixed on the outer wall of the support ring (10). The end of the support rod (11) is fixedly connected to the outer wall of the housing (1) through the locking nut (12). An anti-slip pad (13) is provided at the bottom of the support ring (10).

2. The buffer structure on the shock absorber connecting rod according to claim 1, characterized in that, Two mounting plates (14) are symmetrically fixed to the top outer side of the shell (1). The mounting plates (14) have mounting holes (15). The two mounting plates (14) are connected by reinforcing ribs (22). The cross section of the reinforcing ribs (22) is a triangular structure.

3. The buffer structure on the shock absorber connecting rod according to claim 1, characterized in that, The elastic sheet (5) is made of high elastic alloy steel. The thickness of the elastic sheet (5) gradually decreases along its length. The end closer to the connecting shaft (7) has a larger thickness, while the end farther from the connecting shaft (7) has a smaller thickness.

4. The buffer structure on the shock absorber connecting rod according to claim 1, characterized in that, The slider (6) is provided with a ball (17) on its outer side. The ball (17) is embedded in the inner wall of the groove (2). The slider (6) is slidably connected to the groove (2) through the ball (17).

5. The buffer structure on the shock absorber connecting rod according to claim 1, characterized in that, The outer side of the adjusting ring (9) is provided with anti-slip texture (18), and the inner wall of the adjusting ring (9) is provided with threaded groove (19), which is threaded with the outer side of the slider (6).

6. The buffer structure on the shock absorber connecting rod according to claim 1, characterized in that, The number of support rods (11) is four, and the end of the support rod (11) is provided with a threaded section (20), which is threadedly connected to the locking nut (12).

7. The buffer structure on the shock absorber connecting rod according to claim 1, characterized in that, The anti-slip mat (13) is made of rubber, and the surface of the anti-slip mat (13) is provided with raised stripes (21), which are evenly distributed along the radial direction of the anti-slip mat (13).

8. The buffer structure on the shock absorber connecting rod according to claim 1, characterized in that, The diameter of the through hole (16) is larger than the diameter of the guide hole (3).

9. The buffer structure on the shock absorber connecting rod according to claim 1, characterized in that, One end of the torsion spring (8) is fixed to the outer wall of the connecting shaft (7), and the other end is fixed to the inner wall of the housing (1).

10. The buffer structure on the shock absorber connecting rod according to claim 1, characterized in that, The limiting block (4) is used to limit the movement range of the slider (6) and prevent the slider (6) from leaving the groove (2).

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