Double-stroke shock absorber

Abstract

The utility model provides a double-stroke shock absorber which comprises a main cylinder body, a first shock absorption rod is installed at the top end of the main cylinder body, a first piston is installed at the bottom end of the first shock absorption rod, and the first piston is installed in the main cylinder body in a sliding mode. An air chamber II and an air chamber III are arranged at the upper and lower ends in the damping rod I; a second damping rod is mounted at the top end of the second air chamber, and a second piston is mounted on the outer side of the bottom end of the second damping rod and slidably mounted in the second air chamber; an air chamber IV is arranged at the bottom end of the damping rod II; the bottom end of the main cylinder is connected with a base. By the adoption of the mode of the double damping rods, the overall supporting distance and the damping length can be effectively increased, meanwhile, the hardness degree and the supporting height between the first damping rod and the main cylinder body can be rapidly adjusted by adjusting the internal air pressure, and the hardness degree and the supporting height between the second damping rod and the first damping rod can be rapidly adjusted by adjusting the internal air pressure. And rapid adjustment can be carried out by adjusting the internal air pressure, so that flexible adjustment can be carried out during use, and the use convenience is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of shock absorbers, and more specifically, relates to a double-stroke shock absorber. Background Art

[0002] Shock absorbers are used to dampen the rebound oscillations caused by springs absorbing shock and to reduce road impact. They are widely used in vehicles to improve ride smoothness. While shock-absorbing springs can filter out road vibrations when driving over uneven surfaces, the springs themselves still experience reciprocating motion, and shock absorbers are designed to dampen this spring bounce.

[0003] Existing shock absorbers are generally classified into hydraulic shock absorbers, pneumatic shock absorbers, spring shock absorbers, and rubber shock absorbers. These shock absorption methods all employ a single design, making it difficult to quickly adjust the shock absorber's softness or hardness during use. Furthermore, the support distance is difficult to adjust quickly, meaning that the vehicle's chassis height cannot be adjusted during use. Therefore, in light of these issues, research and improvements are being conducted to address the existing structures and shortcomings, providing a dual-stroke shock absorber with the goal of achieving greater practical value. Utility Model Content

[0004] In order to solve the above technical problems, the present invention provides a dual-stroke shock absorber, which is achieved by the following specific technical means:

[0005] and a tube connecting the dischar e of the pump with a plug in the forward end of the crank case, said tube having a check valve in it at the pump end, and said former tube which connects the pump to the oil drain plug, said tube which connects the pump to the oil drain plug, and said former tube which connects the pump to the oil drain plug, and said former tube which connects the pump to the oil drain plug, and said former

[0006] Furthermore, the outer side of the main cylinder is provided with an external thread, the adjustment assembly includes a fixing ring, the inner ring of the fixing ring is provided with an internal thread matching the external thread, and a fixed shaft is symmetrically fixedly installed on the outer side of the fixing ring.

[0007] Furthermore, the top end of the shock absorber rod 1 is connected to a limiting ring 2, and the interior of the limiting ring 2 is successively installed with a dust ring 1, an air seal 1 and a linear bearing 1 from top to bottom. The inner rings of the dust ring 1, the air seal 1 and the linear bearing 1 are all tightly fitted to the outer side of the shock absorber rod 2; a sealing ring 1 is pressed and installed at the connection between the limiting ring 2 and the top end of the shock absorber rod 1.

[0008] Furthermore, a linear bearing 2 and a sealing ring 2 are installed on the outer side of the second piston, and the linear bearing 2 and the sealing ring 2 are tightly fitted with the inner wall of the shock absorber rod 1; a buffer pad 1 is installed on the outer side of the top end of the second piston.

[0009] Furthermore, the top of the main cylinder is connected to a limiting ring 1, and the interior of the limiting ring 1 is successively installed with a dust ring 2, an air seal 2 and a linear bearing 3 from top to bottom. The inner rings of the dust ring 2, the air seal 2 and the linear bearing 3 are tightly fitted with the outer side of the shock absorber rod 1; a sealing ring 3 is pressed and installed at the connection between the limiting ring 1 and the top of the main cylinder.

[0010] Furthermore, a buffer air chamber is provided between the top side of piston one and the limiting ring one, a vent is provided on one side of the bottom end of the shock absorber rod one, and the two ends of the vent are respectively connected to the buffer air chamber and the air chamber three; a linear bearing four and a sealing ring four are installed on the outer side of the piston one, and the linear bearing four and the sealing ring four are tightly fitted with the inner wall of the main cylinder body; a buffer pad two is installed on the outer side of the top end of the piston one.

[0011] Furthermore, the base is connected to the bottom end of the main cylinder through a thread, and a sealing ring 5 is tightly installed at the connection between the bottom end of the main cylinder and the base; an explosion-proof air chamber is provided at the top end of the base.

[0012] Furthermore, the shock-absorbing elastic reinforcement member is a spring and / or the elastic member / shock-absorbing structure is interchangeable.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The utility model adopts a double shock-absorbing rod style, which can effectively improve the overall support distance and shock-absorbing length. At the same time, the hardness and support height between the shock-absorbing rod one and the main cylinder can be quickly adjusted by adjusting the internal air pressure. The hardness and support height between the shock-absorbing rod two and the shock-absorbing rod one can also be quickly adjusted by adjusting the internal air pressure, so that they can be flexibly adjusted during use, and the convenience of use is high. Through the setting of the adjustment component, the overall installation can be completed by fixing the axis during use, and after installation, the overall support height can be adjusted by rotating the main cylinder to achieve the adjustment of the chassis height. The adjustment method is diverse, the use is flexible, and the overall structure is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model.

[0016] Figure 2 yes Figure 1 Enlarged schematic diagram of part A in the middle.

[0017] Figure 3 yes Figure 1 Enlarged schematic diagram of part B in the middle.

[0018] Figure 4 It is a schematic diagram of the disassembly structure of the utility model.

[0019] Figure 5 It is a schematic diagram of the general assembly of the utility model.

[0020] Figure 6 It is a schematic diagram of the installation of the utility model.

[0021] In the figure, the corresponding relationship between the component names and the drawing numbers is as follows:

[0022] 1. Main cylinder; 2. Shock absorber rod 1; 3. Shock absorber rod 2; 4. Piston 1; 5. Piston 2; 6. Limiting ring 1; 7. Limiting ring 2; 8. Fixed ring; 9. Base; 10. Air nozzle 1; 11. Air nozzle 2; 12. Shock absorber elastic reinforcement; 13. Dust ring 1; 14. Air seal 1; 15. Linear bearing 1; 16. Seal ring 1; 17. Buffer pad 1; 18. Linear bearing 2; 19. Seal ring 2; 20. Dust ring 2; 21. Air seal 2; 22. Linear bearing 3; 23. Seal ring 3; 24. Linear bearing 4; 25. Seal ring 4; 26. Buffer pad 2; 27. Seal ring 5; 28. Fixed shaft;

[0023] 100, air chamber one; 201, air chamber two; 202, air chamber three; 300, air chamber four; 400, buffer air chamber; 500, vent. DETAILED DESCRIPTION

[0024] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0025] In the description of this utility model, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances. Example

[0027] As attached Figure 1 To the attached Figure 6 As shown:

[0028] The utility model provides a double-stroke shock absorber, comprising a main cylinder 1, a shock-absorbing rod 2 is mounted on the top of the main cylinder 1, a piston 4 is mounted on the bottom of the shock-absorbing rod 2, and the piston 4 is slidably mounted inside the main cylinder 1; an air chamber 201 and an air chamber 3 202 are arranged at the upper and lower ends of the interior of the shock-absorbing rod 2; a shock-absorbing rod 3 is mounted on the top of the air chamber 201, a piston 5 is mounted on the outside of the bottom end of the shock-absorbing rod 3, and the piston 5 is slidably mounted inside the air chamber 201; the bottom end of the shock-absorbing rod 3 is arranged There is an air chamber four 300, which is connected to the air chamber two 201, and a shock-absorbing elastic reinforcement 12 is installed between the two; the bottom end of the main cylinder 1 is connected to the base 9, and one side of the base 9 is provided with an air intake channel connected to the air chamber one 100 inside the main cylinder 1, and an air nozzle one 10 is installed at one end of the air intake channel; the middle part of the shock-absorbing rod one 2 is provided with two groups of air intake channels respectively connected to the air chamber two 201 and the air chamber three 202, and an air nozzle two 11 is installed at one end of the air intake channel; an adjustment component is installed on the outside of the main cylinder 1.

[0029] Among them, the outer side of the main cylinder 1 is provided with an external thread, and the adjustment component includes a fixing ring 8, the inner ring of the fixing ring 8 is provided with an internal thread matching the external thread, and the outer side of the fixing ring 8 is symmetrically fixed with a fixing shaft 28, so that during installation, it can be fixed to the installation carrier through the fixing shaft 28 to complete the fixation of the fixing ring 8 and the main cylinder 1. That is, in subsequent use, the overall support height can be quickly adjusted by rotating the main cylinder 1, thereby realizing the adjustment of the vehicle chassis.

[0030] Among them, the top end of the shock absorber rod 2 is connected to a limit ring 27, and the interior of the limit ring 27 is successively installed with a dust ring 13, an air seal 14 and a linear bearing 15 from top to bottom. The inner rings of the dust ring 13, the air seal 14 and the linear bearing 15 are tightly fitted with the outer side of the shock absorber rod 23; a sealing ring 16 is tightly installed at the connection between the limit ring 27 and the top end of the shock absorber rod 2 to improve the sealing performance of the connection between the limit ring 27 and the shock absorber rod 2 to prevent air leakage.

[0031] Among them, a linear bearing 2 18 and a sealing ring 2 19 are installed on the outer side of the piston 2 5, and the linear bearing 2 18 and the sealing ring 2 19 are tightly fitted with the inner wall of the shock absorber rod 1 2; a buffer pad 17 is installed on the outer side of the top end of the piston 2 5 to prevent the piston 2 5 from directly colliding with the limit ring 2 7 and generating abnormal noise.

[0032] Among them, the top of the main cylinder body 1 is connected to a limit ring 6, and the interior of the limit ring 6 is installed with a dust ring 20, an air seal 21 and a linear bearing 3 22 in sequence from top to bottom. The inner rings of the dust ring 20, the air seal 21 and the linear bearing 3 22 are tightly fitted with the outer side of the shock absorber rod 2; a sealing ring 3 23 is tightly installed at the connection between the limit ring 6 and the top of the main cylinder body 1 to improve the sealing performance of the connection between the limit ring 6 and the main cylinder body 1 to prevent air leakage.

[0033] Among them, a buffer air chamber 400 is provided between the top side of the piston 4 and the limiting ring 6, and a vent hole 500 is provided on one side of the bottom end of the shock absorber rod 2, and the two ends of the vent hole 500 are respectively connected to the buffer air chamber 400 and the air chamber three 202; a linear bearing four 24 and a sealing ring four 25 are installed on the outer side of the piston 4, and the linear bearing four 24 and the sealing ring four 25 are tightly fitted with the inner wall of the main cylinder body 1; a buffer pad two 26 is installed on the outer side of the top end of the piston 4 to avoid direct collision between the piston 4 and the limiting ring 6 and generate abnormal noise.

[0034] Among them, the base 9 is connected to the bottom end of the main cylinder body 1 through a thread, and a sealing ring 5 27 is tightly installed at the connection between the bottom end of the main cylinder body 1 and the base 9 to improve the sealing of the connection between the main cylinder body 1 and the base 9 to prevent air leakage during use; an explosion-proof air chamber is provided at the top of the base 9 to prevent the main cylinder body 1 from being crushed and exploded when the piston 1 4 is pressed down to the bottom end of the main cylinder body 1.

[0035] The shock-absorbing elastic reinforcement member 12 is a spring and / or an elastic member. The spring or the elastic member, that is, elastic rubber, can be used alone. Of course, both can be used at the same time to enhance the shock-absorbing elastic force.

[0036] The working principle of this embodiment: by adopting a double shock-absorbing rod style, the overall support distance and shock-absorbing length can be effectively improved. At the same time, the hardness and support height between the shock-absorbing rod 2 and the main cylinder 1 can be quickly adjusted by adjusting the internal air pressure. The hardness and support height between the shock-absorbing rod 2 3 and the shock-absorbing rod 2 can also be quickly adjusted by adjusting the internal air pressure, so that it can be flexibly adjusted during use, and the convenience of use is high; through the setting of the adjustment component, the overall installation can be completed by fixing the shaft 28 during use, and after installation, the overall support height can be adjusted by rotating the main cylinder 1 to achieve the adjustment of the chassis height. The adjustment method is diverse, the use is flexible, and the overall structure is simple.

[0037] The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for specific applications.

Claims

1. A dual-stroke shock absorber, comprising a main cylinder (1), characterized in that: A shock-absorbing rod (2) is installed at the top end of the main cylinder (1), a piston (4) is installed at the bottom end of the shock-absorbing rod (2), and the piston (4) is slidably installed inside the main cylinder (1); an air chamber (2) (201) and an air chamber (202) are provided at the upper and lower ends of the interior of the shock-absorbing rod (2); a shock-absorbing rod (3) is installed at the top end of the air chamber (2) (201), a piston (5) is installed on the outer side of the bottom end of the shock-absorbing rod (3), and the piston (5) is slidably installed inside the air chamber (201); an air chamber (4) (300) is provided at the bottom end of the shock-absorbing rod (3), the air chamber (4) (300) is connected to the air chamber (201), and a shock-absorbing elastic reinforcement (12) is installed between the two. The bottom end of the main cylinder (1) is connected to a base (9), and one side of the base (9) is provided with an air intake channel connected to the air chamber 1 (100) inside the main cylinder (1), and an air nozzle 1 (10) is installed at one end of the air intake channel; the middle part of the shock absorber rod 1 (2) is provided with two groups of air intake channels connected to the air chamber 2 (201) and the air chamber 3 (202) respectively, and an air nozzle 2 (11) is installed at one end of each air intake channel; An adjustment assembly is installed on the outside of the main cylinder (1).

2. The dual-stroke shock absorber according to claim 1, characterized in that: The outer side of the main cylinder (1) is provided with an external thread, the adjustment assembly comprises a fixing ring (8), the inner ring of the fixing ring (8) is provided with an internal thread matching the external thread, and a fixing shaft (28) is symmetrically fixedly mounted on the outer side of the fixing ring (8).

3. The dual-stroke shock absorber according to claim 1, characterized in that: The top end of the shock-absorbing rod 1 (2) is connected to a limiting ring 2 (7), and the interior of the limiting ring 2 (7) is sequentially installed with a dust ring 1 (13), an air seal 1 (14) and a linear bearing 1 (15) from top to bottom. The inner rings of the dust ring 1 (13), the air seal 1 (14) and the linear bearing 1 (15) are all tightly fitted with the outer side of the shock-absorbing rod 2 (3); a sealing ring 1 (16) is tightly installed at the connection between the limiting ring 2 (7) and the top end of the shock-absorbing rod 1 (2).

4. The dual-stroke shock absorber according to claim 3, characterized in that: A linear bearing 2 (18) and a sealing ring 2 (19) are installed on the outer side of the second piston (5), and the linear bearing 2 (18) and the sealing ring 2 (19) are tightly fitted with the inner wall of the shock absorber rod 1 (2); a buffer pad 1 (17) is installed on the outer side of the top end of the second piston (5).

5. The dual-stroke shock absorber according to claim 1, characterized in that: The top end of the main cylinder (1) is connected to a limiting ring 1 (6), and the interior of the limiting ring 1 (6) is sequentially installed with a dust ring 2 (20), an air seal 2 (21) and a linear bearing 3 (22) from top to bottom. The inner rings of the dust ring 2 (20), the air seal 2 (21) and the linear bearing 3 (22) are all tightly fitted with the outer side of the shock absorber rod 1 (2); the limiting ring 1 (6) is tightly installed with a sealing ring 3 (23) at the connection between the limiting ring 1 (6) and the top end of the main cylinder (1).

6. The dual-stroke shock absorber according to claim 5, characterized in that: A buffer air chamber (400) is provided between the top side of the piston one (4) and the limiting ring one (6), and a vent hole (500) is provided on one side of the bottom end of the shock absorber rod one (2), and the two ends of the vent hole (500) are respectively connected to the buffer air chamber (400) and the air chamber three (202); a linear bearing four (24) and a sealing ring four (25) are installed on the outer side of the piston one (4), and the linear bearing four (24) and the sealing ring four (25) are tightly fitted with the inner wall of the main cylinder (1); a buffer pad two (26) is installed on the outer side of the top end of the piston one (4).

7. The dual-stroke shock absorber according to claim 1, characterized in that: The base (9) is connected to the bottom end of the main cylinder (1) through a thread, and a sealing ring 5 (27) is tightly installed at the connection between the bottom end of the main cylinder (1) and the base (9); an explosion-proof air chamber is provided at the top end of the base (9).

8. The dual-stroke shock absorber according to claim 1, wherein: The shock-absorbing elastic reinforcement member (12) is an elastic member.

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