Integral back-pack cylinder structure single-tube shock absorber

Abstract

The utility model relates to single cylinder shock absorber technical field discloses an integral type single cylinder shock absorber of knapsack gas tank structure, including base, the first installation groove is opened in the base, the side of first installation groove is provided with the oil cylinder subassembly, the side of base still is provided with the mounting portion, and the first installation groove, mounting portion, second installation groove are integrated on the base, and the communication of oil cylinder subassembly and nitrogen source subassembly is realized with first aperture and second aperture, this design greatly reduces the number of parts, and oil cylinder base and nitrogen base do not need to be separately installed, then the two bases are connected together, make the whole structure more compact, not only reduce the part purchase and management cost when producing, improve production efficiency, at the same time, because the assembly link of multiple parts is reduced, the probability of assembly error appearance is reduced, the production yield is improved, and the connecting point between parts is reduced, the risk of affecting product life due to connecting component damage is reduced, so that the product is more durable.

Description

Technical Field

[0001] This utility model relates to the field of monotube shock absorber technology, and in particular to a monotube shock absorber with an integrated backpack air tank structure. Background Technology

[0002] During vehicle operation, shock absorbers are typically installed in the suspension system to rapidly dampen vibrations between the chassis and body, thereby improving ride smoothness and comfort. In daily driving, different shock absorbers should be used depending on road conditions to significantly improve ride comfort and effectively extend the lifespan of the shock absorbers.

[0003] Currently, conventional backpack monotube shock absorbers consist of a cylinder base, connecting pipe, O-ring, nitrogen tank base, and fixing bolts. This structure is relatively complex, installation is cumbersome, production efficiency is low, and production cost is high. Utility Model Content

[0004] The purpose of this utility model is to solve the problems existing in the prior art by proposing an integrated backpack air tank structure monotube shock absorber.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An integrated backpack gas tank structure monotube shock absorber includes a base, a first mounting groove on the base, a hydraulic cylinder assembly on one side of the first mounting groove, a mounting part on one side of the base, a second mounting groove on one side of the mounting part, and a nitrogen source assembly on the outer periphery of the mounting part.

[0007] The bottom of the first mounting groove has a chamber, and one side of the inner wall of the chamber has a first opening. The bottom of the second mounting groove has a second opening. The first opening and the second opening are connected to each other, so that the cylinder assembly and the nitrogen source assembly can be connected.

[0008] Preferably, the first opening extends from the inner wall of the cavity along the base towards the mounting portion, and the first opening extends to the surface of one side of the base.

[0009] Preferably, a sealing bolt is provided on one side of the base, and the sealing bolt is threaded into the inner cavity of the first opening.

[0010] Preferably, the cylinder assembly includes a cylinder body installed in a first mounting groove, a piston valve slidably disposed within the cylinder body, and a dust cover disposed on the side of the cylinder body away from the first mounting groove. A mounting hole is provided on one side of the dust cover. A piston rod is disposed on one side of the cylinder body, and the piston rod movably passes through the mounting hole and connects to the piston valve. A shock-absorbing sleeve assembly is installed on the side of the piston rod outside the cylinder body. An upper lifting ring is installed on one side of the shock-absorbing sleeve assembly, and the cylinder body is connected to the first mounting groove.

[0011] Preferably, a first sealing ring is provided in the mounting hole and is sleeved on the outer periphery of the piston rod. A second sealing ring is provided on the outer periphery of the dust cover and is in contact with the inner wall of the cylinder body. A third sealing ring is also provided on the outer periphery of the cylinder body and is located in the first mounting groove.

[0012] Preferably, the shock-absorbing sleeve assembly includes a shock-absorbing base disposed on one side of the piston rod and a shock-absorbing pad disposed on one side of the shock-absorbing base, the shock-absorbing pad being located between the shock-absorbing base and the dust cover.

[0013] Preferably, a cushioning pad is provided on the side of the dust cover near the piston valve.

[0014] Preferably, the nitrogen source assembly includes a nitrogen cylinder body disposed on one side of the mounting section, a floating piston slidably disposed in the nitrogen cylinder body, and an end cap disposed on the side of the nitrogen cylinder body away from the second mounting groove. An air inlet is provided on one side of the end cap, a one-way valve is installed at the air inlet, a fourth sealing ring is provided on the outer periphery of the end cap, and the inner cavity of the nitrogen cylinder body is connected to the second mounting groove.

[0015] Preferably, the mounting part includes an external thread on the base, and the inner cavity of the nitrogen cylinder is threadedly connected to the external thread.

[0016] Preferably, a mounting bolt is provided on one side of the base.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This invention integrates a first mounting groove, a mounting part, and a second mounting groove on a base, and utilizes a first opening and a second opening to connect the hydraulic cylinder assembly and the nitrogen source assembly. This design significantly reduces the number of parts, eliminating the need for separate hydraulic cylinder bases and nitrogen bases, and connecting the two bases together, resulting in a more compact overall structure. This not only reduces the cost of parts procurement and management during production but also simplifies the installation process, making assembly steps more concise and improving production efficiency. Furthermore, by reducing the number of assembly steps, the probability of assembly errors is reduced, increasing production yield. Additionally, the reduced number of connection points between parts lowers the risk of product lifespan being affected by damage to connecting components, making the product more durable. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the base of a single-cylinder shock absorber with an integrated backpack air tank structure proposed in this utility model.

[0020] Figure 2 This is a schematic diagram of the first and second mounting slots of the base of an integrated backpack gas tank structure monotube shock absorber proposed in this utility model.

[0021] Figure 3 This is a schematic diagram showing the connection between the first opening and the second opening of the base of an integrated backpack gas tank structure monotube shock absorber proposed in this utility model.

[0022] Figure 4 This is a plan view of the base, cylinder assembly, and nitrogen source assembly of an integrated backpack gas tank structure monotube shock absorber proposed in this utility model.

[0023] In the diagram: 1. Base; 2. First mounting groove; 3. Mounting part; 4. Second mounting groove; 5. Chamber; 6. First opening; 7. Second opening; 8. Sealing bolt; 9. Cylinder body; 10. Piston valve; 11. Dust cover; 12. Mounting hole; 13. Piston rod; 14. Upper lifting ring; 15. First sealing ring; 16. Second sealing ring; 17. Third sealing ring; 18. Vibration damping base; 19. Vibration damping pad; 20. Buffer pad; 21. Nitrogen cylinder; 22. Floating piston; 23. End cap; 24. Air inlet; 25. One-way valve; 26. Fourth sealing ring; 27. Mounting bolt; 28. Sealing gasket. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Reference Figures 1 to 4An integrated backpack gas tank structure single-cylinder shock absorber includes a base 1, a first mounting groove 2 is provided on the base 1, a hydraulic cylinder assembly is provided on one side of the first mounting groove 2, a mounting part 3 is also provided on one side of the base 1, a second mounting groove 4 is provided on one side of the mounting part 3, and a nitrogen source assembly is provided on the outer periphery of the mounting part 3.

[0026] The bottom of the inner cavity of the first mounting groove 2 is provided with a chamber 5, and a first opening 6 is provided on one side of the inner wall of the chamber 5. The bottom of the inner cavity of the second mounting groove 4 is provided with a second opening 7. The first opening 6 and the second opening 7 are connected to each other, so that the oil cylinder assembly and the nitrogen source assembly can be connected through the connection of the first opening 6 and the second opening 7.

[0027] In use, this device integrates a first mounting groove 2, a mounting part 3, and a second mounting groove 4 on a base 1. The first opening 6 and the second opening 7 connect the hydraulic cylinder assembly to the nitrogen source assembly. This design significantly reduces the number of parts, eliminating the need for separate installation of the hydraulic cylinder base 1 and the nitrogen base 1, and connecting the two bases together. This makes the overall structure more compact, reducing parts procurement and management costs during production, simplifying the installation process, and improving production efficiency. Furthermore, by reducing the number of assembly steps, the probability of assembly errors is reduced, increasing production yield. The reduced number of connection points between parts also lowers the risk of product lifespan being affected by damage to connecting components, making the product more durable.

[0028] Furthermore, the first opening 6 extends from the inner wall of the chamber 5 along the base 1 towards the mounting part 3, and extends to the surface of one side of the base 1. The design of the first opening 6 extending from the inner wall of the chamber 5 along the base 1 towards the mounting part 3 and to the surface of one side of the base 1 is an optimization of the connection method between the cylinder assembly and the nitrogen source assembly. This inclined extension structure eliminates the need for additional connecting pipes to achieve the connection between the two, further enhancing the integration of the structure and avoiding the assembly steps of traditional connecting pipes and other components. This makes the processing and subsequent assembly of the base 1 more convenient, helping to improve production efficiency. At the same time, the integrated opening design reduces potential leakage points, which is consistent with the idea of ​​simplifying the overall structure, and is conducive to extending the product life and enhancing the product's durability.

[0029] Furthermore, a sealing bolt 8 is provided on one side of the base 1. The sealing bolt 8 is threadedly screwed into the inner cavity of the first opening. The design of the sealing bolt 8 threadedly screwed into the inner cavity of the first opening is used to seal the first opening 6. During assembly, the sealing operation can be completed simply by screwing the thread, which simplifies the installation process, improves the assembly efficiency, and further enhances the stability and service life of the product.

[0030] Furthermore, the cylinder assembly includes a cylinder body 9 installed in the first mounting groove 2, a piston valve 10 slidably disposed within the cylinder body 9, and a dust cover 11 disposed on the side of the cylinder body 9 away from the first mounting groove 2. A mounting hole 12 is provided on one side of the dust cover 11. A piston rod 13 is disposed on one side of the cylinder body 9, and the piston rod 13 movably passes through the mounting hole 12 and connects to the piston valve 10. A shock-absorbing sleeve assembly is installed on the side of the piston rod 13 outside the cylinder body 9. An upper lifting ring 14 is installed on one side of the sleeve assembly, and the cylinder body 9 is connected to the first mounting groove 2. The specific structure of the cylinder assembly is defined, integrating components such as the cylinder body 9, piston valve 10, dust cover 11, piston rod 13, shock-absorbing sleeve assembly, and upper lifting ring 14 into the first mounting groove 2. The compact structural design makes the fit between the components more precise, reduces failures caused by loose or misaligned components, helps to improve product life and enhance durability.

[0031] Furthermore, the upper hanging ring 14 can be connected to the car. When the car encounters bumps, the impact force of the road surface will be transmitted to the upper hanging ring 14, which will drive the piston rod 13 to move. The piston rod 13 will move into the cylinder body 9 along the mounting hole 12 of the dust cover 11. At this time, the piston valve 10 will slide synchronously in the cylinder body 9 under the push of the piston rod 13. As the piston valve 10 moves, the oil in the cylinder body 9 will be squeezed. Some of the oil will enter the chamber 5 of the base 1 through the connection between the cylinder body 9 and the first mounting groove 2, and then flow into the second mounting groove 4 where the nitrogen source assembly is located and the nitrogen cylinder body 21 through the connecting channel of the first opening 6 and the second opening 7.

[0032] The oil entering the nitrogen cylinder 21 will push the floating piston 22 to move away from the second mounting groove 4. During this process, the gas in the nitrogen cylinder 21 is compressed and the gas pressure gradually increases. The compressed gas has elastic potential energy and will generate a reverse thrust on the floating piston 22, which will prevent the oil from continuing to flow into the nitrogen cylinder 21. At the same time, the oil in the cylinder 9 will also form resistance on the piston valve 10, which will suppress the movement of the piston rod 13 and initially alleviate the impact force brought by the road surface.

[0033] When the impact force on the road surface weakens, the compressed gas in the nitrogen cylinder 21 begins to release elastic potential energy, pushing the floating piston 22 to reset towards the side closer to the second mounting groove 4. At this time, the oil in the nitrogen cylinder 21 flows back to the chamber 5 of the base 1 and the inside of the cylinder 9 through the second opening 7 and the first opening 6 under the action of the floating piston 22. The piston valve 10 and the piston rod 13 move in the opposite direction to reset under the push of the oil.

[0034] During the reciprocating motion of piston rod 13 and piston valve 10, the damping pad 19 in the damping sleeve assembly acts as a buffer between the damping base 18 and the dust cover 11, reducing the impact when piston rod 13 returns to its original position. The buffer pad 20 on the dust cover 11 prevents hard collision between piston valve 10 and dust cover 11, further buffering and damping the shock. At the same time, each sealing ring (first to fourth sealing rings 26) ensures that oil and gas do not leak during the movement, ensuring the sealing and stability of the entire damping system. This allows the above-mentioned movement process to continue reliably, thereby effectively absorbing and buffering the vibration during vehicle operation and achieving the vehicle's shock absorption effect.

[0035] Furthermore, a first sealing ring 15 is provided in the mounting hole 12, and the first sealing ring 15 is sleeved on the outer periphery of the piston rod 13. A second sealing ring 16 is provided on the outer periphery of the dust cover 11, and the second sealing ring 16 contacts the inner wall of the cylinder body 9. A third sealing ring 17 is also provided on the outer periphery of the cylinder body 9, and the third sealing ring 17 is located in the first mounting groove 2. The arrangement of the first sealing ring 15, the second sealing ring 16, and the third sealing ring 17 forms an effective seal between the piston rod 13 and the mounting hole 12, between the dust cover 11 and the inner wall of the cylinder body 9, and between the cylinder body 9 and the first mounting groove 2, respectively. The reasonable layout of these sealing rings simplifies the overall structure while ensuring the sealing performance of the cylinder assembly.

[0036] Furthermore, the shock-absorbing sleeve assembly includes a shock-absorbing base 18 disposed on one side of the piston rod 13 and a shock-absorbing pad 19 disposed on one side of the shock-absorbing base 18. The shock-absorbing pad 19 is located between the shock-absorbing base 18 and the dust cover 11. The shock-absorbing sleeve assembly consists of the shock-absorbing base 18 and the shock-absorbing pad 19, and the shock-absorbing pad 19 is located between the shock-absorbing base 18 and the dust cover 11. The shock-absorbing pad 19 can effectively buffer the impact force when the piston rod 13 moves, reduce wear between components, and extend product life and enhance durability.

[0037] Furthermore, a buffer pad 20 is provided on the side of the dust cover 11 near the piston valve 10. The buffer pad 20 on the side of the dust cover 11 near the piston valve 10 can play a buffering role when the piston valve 10 moves close to the dust cover 11, reducing the hard collision between the piston valve 10 and the dust cover 11, reducing the probability of component damage, protecting the parts, and extending the service life of the product.

[0038] Furthermore, the nitrogen source assembly includes a nitrogen cylinder 21 disposed on one side of the mounting portion 3, a floating piston 22 slidably disposed within the nitrogen cylinder 21, and an end cap 23 disposed on the side of the nitrogen cylinder 21 away from the second mounting groove 4. An air inlet 24 is provided on one side of the end cap 23, and a one-way valve 25 is installed at the air inlet 24. A fourth sealing ring 26 is provided on the outer periphery of the end cap 23, and the fourth sealing ring 26 contacts the inner wall of the inner cavity of the nitrogen cylinder 21. The inner cavity of the nitrogen cylinder 21 is connected to the second mounting groove 4. The mounting groove 4 is connected to the second mounting groove 4, which integrates components such as nitrogen cylinder 21, floating piston 22, end cap 23, one-way valve 25, and fourth sealing ring 26 into the mounting part 3. The inner cavity of nitrogen cylinder 21 is connected to the second mounting groove 4. This design echoes the integration of the hydraulic cylinder assembly on the base 1, forming an integrated structure that improves production efficiency. At the same time, the tight cooperation and reliable sealing of each component (such as the fourth sealing ring 26) ensures the normal operation of the nitrogen source assembly, reduces the risk of failure, and improves product life and durability.

[0039] Furthermore, the mounting part 3 includes an external thread (not shown in the figure) provided on the base 1. The inner cavity of the nitrogen cylinder 21 is threadedly connected to the external thread. The threaded connection between the external thread and the inner cavity of the nitrogen cylinder 21 is simple to operate, improves assembly efficiency, and provides a stable connection, reducing problems caused by loose connections. This further enhances the reliability and service life of the product. A sealing gasket 28 is provided on one side of the mounting part 3. When the nitrogen cylinder 21 is threadedly connected to the mounting part 3, it seals the connection between the nitrogen cylinder 21 and the mounting part 3, preventing nitrogen from flowing out of the nitrogen cylinder 21.

[0040] Furthermore, a mounting bolt 27 is provided on one side of the base 1, which can be used to install the base 1 into the corresponding position.

[0041] 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 single-cylinder shock absorber with an integrated backpack air tank structure, comprising a base (1), characterized in that: The base (1) is provided with a first mounting groove (2), a hydraulic cylinder assembly is provided on one side of the first mounting groove (2), and a mounting part (3) is also provided on one side of the base (1). A second mounting groove (4) is provided on one side of the mounting part (3), and a nitrogen source assembly is provided on the outer periphery of the mounting part (3). The bottom of the inner cavity of the first mounting groove (2) is provided with a chamber (5), and a first opening (6) is provided on one side of the inner wall of the chamber (5). The bottom of the inner cavity of the second mounting groove (4) is provided with a second opening (7). The first opening (6) and the second opening (7) are connected. The cylinder assembly and the nitrogen source assembly are connected through the connection of the first opening (6) and the second opening (7).

2. The integrated backpack air tank structure monotube shock absorber according to claim 1, characterized in that: The first opening (6) extends from the inner wall of the chamber (5) along the base (1) towards the mounting part (3) and extends to the surface of the base (1).

3. The integrated backpack air tank structure monotube shock absorber according to claim 2, characterized in that: A sealing bolt (8) is provided on one side of the base (1), and the sealing bolt (8) is threadedly connected to the inner cavity of the first opening.

4. The integrated backpack air tank structure monotube shock absorber according to claim 3, characterized in that: The cylinder assembly includes a cylinder body (9) installed in a first mounting groove (2), a piston valve (10) slidably disposed in the cylinder body (9), and a dust cover (11) disposed on the side of the cylinder body (9) away from the first mounting groove (2). A mounting hole (12) is provided on one side of the dust cover (11). A piston rod (13) is provided on one side of the cylinder body (9). The piston rod (13) movably passes through the mounting hole (12) and is connected to the piston valve (10). A shock-absorbing sleeve assembly is installed on the side of the piston rod (13) outside the cylinder body (9). An upper lifting ring (14) is installed on one side of the shock-absorbing sleeve assembly. The cylinder body (9) is connected to the first mounting groove (2).

5. The integrated backpack air tank structure monotube shock absorber according to claim 4, characterized in that: A first sealing ring (15) is provided in the mounting hole (12), and the first sealing ring (15) is sleeved on the outer periphery of the piston rod (13). A second sealing ring (16) is provided on the outer periphery of the dust cover (11), and the second sealing ring (16) is in contact with the inner wall of the cylinder body (9). A third sealing ring (17) is also provided on the outer periphery of the cylinder body (9), and the third sealing ring (17) is located in the first mounting groove (2).

6. The integrated backpack air tank structure monotube shock absorber according to claim 5, characterized in that: The shock-absorbing sleeve assembly includes a shock-absorbing base (18) disposed on one side of the piston rod (13) and a shock-absorbing pad (19) disposed on one side of the shock-absorbing base (18), wherein the shock-absorbing pad (19) is located between the shock-absorbing base (18) and the dust cover (11).

7. The integrated backpack air tank structure monotube shock absorber according to claim 6, characterized in that: The dust cover (11) is provided with a buffer pad (20) on the side near the piston valve (10).

8. The integrated backpack air tank structure monotube shock absorber according to claim 7, characterized in that: The nitrogen source assembly includes a nitrogen cylinder (21) disposed on one side of the mounting part (3), a floating piston (22) slidably disposed in the nitrogen cylinder (21), and an end cap (23) disposed on the side of the nitrogen cylinder (21) away from the second mounting groove (4). An air inlet (24) is provided on one side of the end cap (23), and a one-way valve (25) is installed at the air inlet (24). A fourth sealing ring (26) is provided on the outer periphery of the end cap (23), and the inner cavity of the nitrogen cylinder (21) is connected to the second mounting groove (4).

9. The integrated backpack air tank structure monotube shock absorber according to claim 8, characterized in that: The mounting part (3) includes an external thread provided on the base (1), and the inner cavity of the nitrogen cylinder (21) is threadedly connected to the external thread.

10. The integrated backpack air tank structure monotube shock absorber according to claim 9, characterized in that: The base (1) is provided with mounting bolts (27) on one side.

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