Air pump type shock absorber

Abstract

The utility model discloses an air pump type shock absorber which comprises a bottom cylinder and an ejector rod embedded in the bottom cylinder, fixing pieces are arranged on a cylinder body of the bottom cylinder and an ejector rod body, and a sealing rubber sleeve arranged between the cylinder body of the bottom cylinder and the ejector rod body is fixedly connected through the fixing pieces on the cylinder body of the bottom cylinder and the ejector rod body. Sealing rings connected with the fixing pieces are arranged at the upper end and the lower end of the sealing rubber sleeve, one fixing piece is provided with an air nozzle communicated to the other end face of the fixing piece, the internal air pressure can be flexibly adjusted, and therefore the buffering and damping effects are achieved, and the stability of the whole supporting structure is effectively protected.

Description

Technical Field

[0001] This utility model relates to the technical field of shock absorber equipment, specifically an air pump type shock absorber. Background Technology

[0002] Shock absorbers are widely used in automotive suspension systems to improve ride comfort and handling stability.

[0003] In the current technology, shock absorbers are usually pre-set vibration damping structures with fixed values ​​and limits. When dealing with different road surfaces, shock absorbers with fixed damping limits cannot fully cope with different road conditions. For example, they are too soft when passing over convex roads and too stiff when passing over ditches, and cannot be adjusted in a timely and flexible manner. Therefore, the current technology of shock absorbers still has some problems and can be improved to make them more functional. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides an air pump-type shock absorber to solve the technical issues raised in the background section.

[0005] To achieve the above objectives, this utility model proposes an air pump type shock absorber, including a bottom cylinder and a top rod nested inside the bottom cylinder. Both the bottom cylinder body and the top rod body are provided with fixing plates. A sealing sleeve placed between the bottom cylinder body and the top rod body is fixedly connected by the fixing plates on the fixing plates. Both ends of the sealing sleeve are provided with sealing rings connected to the fixing plates. One of the fixing plates is provided with an air nozzle that leads to the other end face of the fixing plate.

[0006] Preferably, the fixing plates on the bottom cylinder body and the top rod body are respectively located in the middle of the bottom cylinder body and the middle of the top rod body.

[0007] Preferably, each of the fixing plates has a first mounting hole around its circumference, and the opposite end face of the upper and lower fixing plates has a positioning ring protruding from it, and a sealing ring is connected to the first mounting hole through the positioning ring.

[0008] Preferably, the outer end face of the sealing ring has a cover with an inner diameter larger than the outer diameter of the positioning ring. The cover covers the outside of the positioning ring. The sealing ring has a second mounting hole corresponding to the first mounting hole around its circumference. The first mounting hole and the second mounting hole are bolted together.

[0009] Preferably, the sealing sleeve is open at both the top and bottom and hollow inside, and the sealing sleeve covers the outside of the bottom cylinder body and the top rod body.

[0010] The beneficial effects of this utility model are as follows: Firstly, by installing a sealing sleeve between the bottom cylinder and the outer side of the top rod, the installation structure of the shock absorber is simplified, making disassembly and assembly easier, and allowing for individual replacement of components. Secondly, by installing a sealing sleeve between the bottom cylinder and the outer side of the top rod, the space inside and outside the sealing sleeve is sealed. The shock absorber's stiffness can be flexibly adjusted by injecting and depressurizing nitrogen into the sealing sleeve via an air nozzle on a fixed plate. When nitrogen is injected, the space inside the sealing sleeve is filled with nitrogen, causing the sealing sleeve to expand and drive the expansion between the bottom cylinder and the top rod, thus extending the top rod upwards from inside the bottom cylinder, increasing the height and stiffness of the shock absorber. When depressurization is achieved through the air nozzle, the internal space of the sealing sleeve is released, making it more flexible, and the top rod naturally retracts into the bottom cylinder, making the shock absorber more flexible and adjustable. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0012] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0013] Figure 3 This is a schematic diagram of the bottom cylinder top rod installation structure of this utility model;

[0014] Figure 4 This is a schematic diagram of the sealing sleeve structure of this utility model.

[0015] In the diagram: 1. Bottom cylinder; 2. Top rod; 3. Fixing plate; 301. First mounting hole; 302. Positioning ring; 4. Sealing sleeve; 401. Sealing ring; 402. Cover; 403. Second mounting hole. Detailed Implementation

[0016] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0017] Combination Figure 1-4 This utility model provides an air pump type shock absorber, including a bottom cylinder 1 and a top rod 2 nested in the bottom cylinder 1. The bottom cylinder 1 and the top rod 2 are both provided with fixing plates 3. A sealing sleeve 4 is fixedly connected between the bottom cylinder 1 and the top rod 2 through the fixing plates 3. The sealing sleeve 4 is provided with sealing rings 401 connected to the fixing plates 3 at both the upper and lower ends. One of the fixing plates 3 is provided with an air nozzle that leads to the other end face of the fixing plate 3.

[0018] Furthermore, the fixing plates 3 on the bottom cylinder 1 and the top rod 2 are respectively set in the middle of the bottom cylinder and the middle of the top rod 2.

[0019] Furthermore, each of the fixing plates 3 has a first mounting hole 301 around its circumference, and each of the upper and lower fixing plates 3 has a positioning ring 302 protruding from one opposite end face, and a sealing ring 401 is connected to the first mounting hole 301 through the positioning ring 302.

[0020] Furthermore, the outer end face of the sealing ring 401 has a cover 402 with an inner diameter larger than the outer diameter of the positioning ring 302. The cover 402 covers the outside of the positioning ring 302. The sealing ring 401 has a second mounting hole 403 corresponding to the first mounting hole 301 around its circumference. The first mounting hole 301 and the second mounting hole 403 are bolted together.

[0021] Furthermore, the sealing sleeve 4 is open at both the top and bottom and hollow inside, and the sealing sleeve 4 covers the outside of the bottom cylinder 1 and the top rod 2.

[0022] This air-pump type shock absorber simplifies the installation structure by using a sealing sleeve 4 between the base cylinder 1 and the outer side of the top rod 2. This makes disassembly and assembly easier, and individual components can be replaced. Furthermore, the sealing sleeve 4 seals both the external space and the internal space of the sealing sleeve 4. By injecting and depressing nitrogen into the sealing sleeve 4 using a nozzle on the fixing plate 3, the shock absorber's stiffness can be flexibly adjusted. When nitrogen is injected, the space inside the sealing sleeve 4 is filled, causing it to expand and expand the space between the base cylinder 1 and the top rod 2. This causes the top rod 2 to extend upwards from inside the base cylinder 1, increasing the height and stiffness of the shock absorber. When depressing the air, the internal space of the sealing sleeve 4 is released, making it more flexible. The top rod 2 naturally retracts into the base cylinder 1, resulting in a more flexible and easily adjustable shock absorber.

[0023] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A pneumatic shock absorber, comprising a base cylinder (1) and a top rod (2) nested within the base cylinder (1), characterized in that: The bottom cylinder (1) and the top rod (2) are both provided with fixing plates (3). A sealing sleeve (4) is fixedly connected between the bottom cylinder (1) and the top rod (2) via the fixing plates (3). Both ends of the sealing sleeve (4) are provided with sealing rings (401) that are connected to the fixing plates (3). One of the fixing plates (3) is provided with an air nozzle that leads to the other end of the fixing plate (3).

2. The air pump type shock absorber according to claim 1, characterized in that: The fixing plates (3) on the bottom cylinder (1) and the top rod (2) are respectively set in the middle of the bottom cylinder and the middle of the top rod (2).

3. The air pump type shock absorber according to claim 1, characterized in that: Each of the fixing plates (3) has a first mounting hole (301) around its circumference. The opposite end face of the fixing plates (3) arranged vertically has a positioning ring (302) protruding from it. The sealing ring (401) is connected to the first mounting hole (301) through the positioning ring (302).

4. The air pump type shock absorber according to claim 3, characterized in that: The outer end face of the sealing ring (401) has a cover (402) with an inner diameter larger than the outer diameter of the positioning ring (302). The cover (402) covers the outside of the positioning ring (302). The sealing ring (401) has a second mounting hole (403) corresponding to the first mounting hole (301) around its circumference. The first mounting hole (301) and the second mounting hole (403) are bolted together.

5. A pneumatic pump-type shock absorber according to claim 1, characterized in that: The sealing sleeve (4) is open at both the top and bottom and hollow inside. The sealing sleeve (4) covers the outside of the bottom cylinder (1) and the top rod (2).

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