A reverse motion air spring shock absorber

Abstract

This utility model belongs to the field of shock absorber technology, and particularly relates to a reverse motion air spring shock absorber, comprising: a shock absorber body, wherein a piston rod is provided at the connecting end of the shock absorber body; a cover, wherein the shock absorber body is fixedly disposed at one end of the inner cavity of the cover, a lower cylinder is movably disposed in the inner cavity of the cover, a limiting groove is formed on the piston rod, a C-shaped retaining ring is installed in the limiting groove, a support seat is fixedly connected to one side of the C-shaped retaining ring, the support seat is fixedly connected to the lower cylinder, an upper cylinder is fixedly disposed at the other end of the inner cavity of the cover, and an air spring is disposed between the lower cylinder and the upper cylinder. The inflated air spring can push the lower cylinder to move within the cover. Compared with the prior art, this utility model can change the overall length of the shock absorber, realize the "reverse motion" shock absorption function, avoid physical damage to the air spring caused by accidental collisions, extend its service life, and thus improve the overall durability and service life of the shock absorber.

Description

Technical Field

[0001] This utility model belongs to the field of shock absorber technology, and in particular relates to a reverse motion air spring shock absorber. Background Technology

[0002] With economic development and social progress, the pursuit of personal comfort has become an inevitable trend and a social consensus. Shock absorbers have also evolved towards different application scenarios and layouts. A typical air spring shock absorber includes the shock absorber body, air spring, buffer block, upper fixed seat, floating piston, and upper hanging ring. The air spring is fastened to the upper fixed seat and floating piston, the buffer block passes through the piston rod of the shock absorber body, and the fastened air spring floating piston passes through the piston rod and fits onto the outer cylinder of the shock absorber. The upper hanging ring connects to the piston rod and is threaded into the upper fixed seat. The assembled air spring shock absorber is used by inflating and deflating the air spring, which in turn moves the piston rod up and down. This type of air spring shock absorber is usually placed on both sides of the rear wheels and is not suitable for other vehicle frame structures.

[0003] Chinese Patent Publication No. 202410551525.8 discloses a disc damper for a rocker arm structure with forced reset via elastic force. Using the disc damper described in this invention, a rocker arm structure with forced reset via elastic force can be achieved by connecting the central shaft and outer ring of the support and the rocker arm in a one-to-one manner. This structure offers better durability than rocker arm structures with forced reset via torsion springs in the prior art, and also occupies less space than rocker arm structures with forced reset via cylindrical dampers.

[0004] However, existing technologies have the following problems when in use: it is difficult to adjust and adapt the shock absorbers according to the installation requirements of different frames, the applicable scenarios are limited, and it cannot meet the diverse shock absorption layout requirements of frames. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned technical problems by providing a reverse-motion air spring shock absorber.

[0006] This technical solution includes: Shock absorber body; The cover has a shock absorber body fixedly installed at one end of the inner cavity of the cover. A lower cylinder is movably installed in the inner cavity of the cover. A limiting groove is opened on the piston rod of the shock absorber body. A C-shaped retaining ring is installed in the limiting groove. A support seat is fixedly connected to one side of the C-shaped retaining ring. The support seat is fixedly connected to the lower cylinder. An upper cylinder is fixedly installed at the other end of the inner cavity of the cover. An air spring is installed between the lower cylinder and the upper cylinder. The inflated air spring can push the lower cylinder to slide inside the cover. The lower cylinder drives the support seat and C-shaped retaining ring to move, which in turn drives the piston rod to move into the body of the shock absorber.

[0007] Furthermore, the two ends of the air spring are fixedly connected to the lower cylinder and the upper cylinder by a first clamp and a second clamp, respectively.

[0008] Furthermore, one end of the cover is threadedly connected to a lower cover, which is fixed to the shock absorber body by a retaining spring.

[0009] Furthermore, the other end of the cover is threadedly connected to an upper cover, which is fixedly connected to the upper cylinder by screws.

[0010] Furthermore, a buffer block is fixedly connected to the outer wall of the piston rod.

[0011] Compared with the prior art, the anti-motion shock absorber of this utility model has the following advantages: 1. Through the structural design of air spring, lower cylinder, support seat, C-shaped retaining ring, and piston rod, the air spring can generate thrust after inflation to push the lower cylinder to move inside the cover cavity. The support seat and C-shaped retaining ring drive the piston rod to move into the inside of the shock absorber body, changing the overall length of the shock absorber and realizing the "reverse motion" shock absorption function.

[0012] 2. It adopts a concealed air spring layout, with only the piston rod exposed to participate in the movement. The air spring is built into the inner cavity of the cover, which can isolate it from external dust and impurities, and at the same time avoid physical damage to the air spring caused by accidental collisions, thus extending its service life and improving the overall durability and service life of the shock absorber. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of the present invention.

[0014] The markings in the diagram are as follows: 1. Shock absorber body; 2. Buffer block; 3. Piston rod; 4. Support seat; 5. Fixed snap ring; 6. Lower cover; 7. Lower cylinder; 8. Upper cover; 9. Upper cylinder; 10. Hex nut; 11. First clamp; 12. Second clamp; 13. Air spring; 14. Cover; 15. Screw; 16. Oil-free bushing; 17. C-type snap ring; 19. First O-ring; 20. Second O-ring; 21. Dust seal. Detailed Implementation

[0015] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0016] It should be noted that all directional and positional terms used in this utility model, such as "up," "down," "left," "right," "front," "back," "vertical," "horizontal," "inner," "outer," "top," "lower," "lateral," "longitudinal," and "center," are only used to explain the relative positional relationships and connection arrangements between components in a specific state (as shown in the accompanying drawings). They are merely for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, descriptions involving "first," "second," etc., in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0017] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0019] like Figure 1 As shown, a reverse-motion air spring shock absorber includes: The shock absorber body 1 has a hexagonal nut 10 threaded onto the outer side of the piston rod 3 of the shock absorber body 1. The cover 14 has a shock absorber body 1 fixedly installed at one end of the inner cavity of the cover 14. The inner cavity of the cover 14 has a lower cylinder 7 movably installed. A limiting groove is opened on the piston rod 3. A C-shaped retaining spring 17 is installed in the limiting groove. A support seat 4 is fixedly connected to one side of the C-shaped retaining spring 17. The support seat 4 is fixedly connected to the lower cylinder 7. An upper cylinder 9 is fixedly installed at the other end of the inner cavity of the cover 14. An air spring 13 is installed between the lower cylinder 7 and the upper cylinder 9. The inflated air spring 13 can push the lower cylinder 7 to slide inside the cover 14. The lower cylinder 7 drives the support seat 4 and the C-shaped snap ring 17 to move, which in turn drives the piston rod 3 to move into the shock absorber body 1.

[0020] As a preferred example of this utility model, the shock absorber is configured by fixing the shock absorber body 1 to one end of the inner cavity of the cover 14, with a lower cylinder 7 movable in the inner cavity, and a C-shaped retaining ring 17 installed on the piston rod 3 through a limiting groove. The C-shaped retaining ring 17 is connected to the lower cylinder 7 via the support seat 4. An upper cylinder 9 is fixed to the other end of the cover 14, and an air spring 13 is provided between the lower cylinder 7 and the upper cylinder 9. When the air spring 13 is inflated, it pushes the lower cylinder 7 to move, causing the support seat 4, the C-shaped retaining ring 17, and the piston rod 3 to move into the shock absorber body 1, thereby changing the total length of the shock absorber and achieving "reverse motion" shock absorption.

[0021] In the example of this application, the two ends of the air spring 13 are fixedly connected to the lower cylinder 7 and the upper cylinder 9 by the first clamp 11 and the second clamp 12, respectively.

[0022] As a preferred example of this utility model, the two ends of the air spring 13 are fixed to the lower cylinder 7 and the upper cylinder 9 by the first clamp 11 and the second clamp 12, which improves the connection firmness. The clamps can tighten the connection parts to ensure stable transmission of thrust and maintain stable air pressure of the air spring 13.

[0023] In the example of this application, one end of the cover 14 is threadedly connected to the lower cover 6, and the lower cover 6 is fixedly set to the shock absorber body 1 by a retaining spring 5. Specifically, a first O-ring 19 for sealing is provided between the lower cover 6 and the shock absorber body 1.

[0024] As a preferred example of this utility model, one end of the cover 14 is threaded to the lower cover 6, which facilitates disassembly and assembly for maintenance of the internal shock absorber body 1. The lower cover 6 and the shock absorber body 1 are then fixed together by a retaining spring 5 to improve the stability of the shock absorber body 1.

[0025] In the example of this application, the other end of the cover 14 is threadedly connected to the upper cover 8, which is fixedly connected to the upper cylinder 9 by screws 15. Specifically, one end of the upper cover 8 is provided with a dust seal 21.

[0026] As a preferred example of this utility model, the other end of the cover 14 is threaded to the upper cover 8, which facilitates the assembly and maintenance of components such as the upper cylinder 9 and the air spring 13. The upper cover 8 is fixed to the upper cylinder 9 by screws 15, which can prevent the upper cylinder 9 from shifting when the air spring 13 is inflated, and ensure that the air spring 13 is in the preset position. Specifically, an oil-free bushing 16 is fixedly provided between the upper cylinder 9 and the cover 14, and a second O-ring 20 is provided between the upper cylinder 9 and the piston rod 3.

[0027] In the example of this application, a buffer block 2 is fixedly connected to the outer wall of the piston rod 3.

[0028] As a preferred example of this utility model, a buffer block 2 is fixed to the outer wall of the piston rod 3, which can play a buffering role when the piston rod 3 moves, absorb the impact force to reduce hard collisions and reduce the wear of the piston rod 3.

[0029] In practical use, a piston rod 3 is fixedly installed at the connecting end of the shock absorber body 1. A buffer block 2, which serves as a buffer and protection, is fixedly connected to the outer wall of the piston rod 3. The shock absorber body 1 is fixedly installed at one end of the inner cavity of the cover 14. A lower cover 6 is also threadedly connected to this end of the cover 14. The lower cover 6 and the shock absorber body 1 are fixedly installed by a retaining spring 5. At the same time, a lower cylinder 7 is movably installed in the inner cavity of the cover 14. A limiting groove for installing a C-shaped retaining spring 17 is correspondingly opened on the piston rod 3. The C-shaped retaining spring 17 is installed in the limiting groove, and the right side of the C-shaped retaining spring 17 is fixedly connected to the support base 4. The end of the support base 4 away from the C-shaped retaining spring 17 is fixedly connected to the lower cylinder 7. The cover 14... An upper cylinder 9 is fixedly installed at the other end of the inner cavity. An upper cover 8 is threadedly connected to one end of the cover 14. The upper cover 8 is fixedly connected to the upper cylinder 9 by screws 15. An air spring 13 is installed between the lower cylinder 7 and the upper cylinder 9. Both ends of the air spring 13 are fixedly installed to the lower cylinder 7 and the upper cylinder 9 respectively by the second clamps 12. When the air spring 13 is inflated, it can generate thrust to push the lower cylinder 7 to move in the inner cavity of the cover 14. When the lower cylinder 7 moves, it will drive the support seat 4 fixedly connected to it to move synchronously. The support seat 4 will drive the C-shaped snap ring 17 and the piston rod 3 to move, and cause the piston rod 3 to move into the interior of the shock absorber body 1, thereby changing the total length of the shock absorber and realizing the function of anti-motion shock absorption.

[0030] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A reverse-motion air spring shock absorber, characterized in that, include: Shock absorber body (1); Cover (14), the shock absorber body (1) is fixedly installed at one end of the inner cavity of the cover (14), the inner cavity of the cover (14) is movably provided with a lower cylinder (7), the piston rod (3) of the shock absorber body (1) is provided with a limit groove, a C-shaped snap ring (17) is installed in the limit groove, a support seat (4) is fixedly connected to one side of the C-shaped snap ring (17), the support seat (4) is fixedly connected to the lower cylinder (7), the other end of the inner cavity of the cover (14) is fixedly provided with an upper cylinder (9), and an air spring (13) is provided between the lower cylinder (7) and the upper cylinder (9). The inflated air spring (13) can push the lower cylinder (7) to slide inside the cover (14), and the lower cylinder (7) drives the piston rod (3) to move into the shock absorber body (1) through the support seat (4) and the C-shaped snap ring (17).

2. The reverse-motion air spring shock absorber according to claim 1, characterized in that, The two ends of the air spring (13) are fixed to the lower cylinder (7) and the upper cylinder (9) respectively by the first clamp (11) and the second clamp (12).

3. The reverse-motion air spring shock absorber according to claim 1, characterized in that, One end of the cover (14) is threadedly connected to a lower cover (6), and the lower cover (6) is fixedly mounted to the shock absorber body (1) by a retaining clip (5).

4. A reverse-motion air spring shock absorber according to claim 3, characterized in that, The other end of the cover (14) is threadedly connected to the upper cover (8), which is fixedly connected to the upper cylinder (9) by screws (15).

5. A reverse-motion air spring shock absorber according to claim 1, characterized in that, A buffer block (2) is fixedly connected to the outer wall of the piston rod (3).

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