Shock absorber capable of preventing separation of bushing

Abstract

The utility model discloses a shock absorber with an anti-separation bushing, which belongs to the technical field of shock absorbers, and comprises a shock absorber cylinder, the bottom end of the shock absorber cylinder is connected with a lower lifting lug, the upper end of the shock absorber cylinder is connected with an upper lifting lug through a connecting rod, and the lower end of the shock absorber cylinder is connected with a lower lifting lug. The upper lifting lug and the lower lifting lug sequentially comprise an inner steel pipe, a rubber bushing and an outer steel pipe from inside to outside, and threaded teeth are arranged on the inner side face, connected with the rubber bushing, of the outer steel pipe. The rubber bushing is pressed between the inner steel pipe and the outer steel pipe and is integrally vulcanized with the inner steel pipe and the outer steel pipe, a threaded tooth structure is additionally arranged on the inner side face of the outer steel pipe, threads are arranged in the rubber bushing and the outer steel pipe, on one hand, the contact area with rubber is increased, and on the other hand, the bonding strength of integral vulcanization of the steel pipe and the rubber is improved. Therefore, the outer steel pipe and the rubber bushing are not easy to separate, the service life of the rubber bushing is prolonged, and the driving safety is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of vibration damper technology, specifically relating to a vibration damper with bushing anti-separation. Background Technology

[0002] A shock absorber is a device used to reduce or suppress mechanical vibration and impact energy transmission. It reduces the vibration amplitude of equipment or structures by consuming vibration energy or changing the system's natural frequency, thereby protecting the equipment, improving stability, and reducing noise. In vehicle shock absorber installation, current shock absorbers are connected to external vehicle components via bushings. However, the outer steel tube used to connect to the bushing is flat. Over time, the rubber bushing is prone to detaching from the outer steel tube under harsh operating conditions, seriously affecting driving safety.

[0003] To address this issue, we designed a bushing anti-separation vibration damper to provide an alternative technical solution. Utility Model Content

[0004] The purpose of this invention is to provide a bushing anti-separation shock absorber to solve the problems mentioned in the background art regarding the use of existing shock absorbers.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a shock absorber with bushing anti-separation, comprising a shock absorber cylinder, a lower lifting lug connected to the bottom end of the shock absorber cylinder, and an upper lifting lug connected to the upper end of the shock absorber cylinder via a connecting rod. The upper and lower lifting lugs, from the inside to the outside, comprise an inner steel pipe, a rubber bushing, and an outer steel pipe, respectively. Threaded teeth are provided on the inner surface of the outer steel pipe where it connects to the rubber bushing.

[0006] Preferably, the rubber bushing is embedded and press-fitted between the inner steel pipe and the outer steel pipe.

[0007] Preferably, a washer and a rubber buffer block are provided at the connection position between the connecting rod and the shock absorber cylinder.

[0008] Preferably, a dust cover is provided on the upper part of the connecting rod, and a dust shield is provided on the lower side of the dust cover, the dust shield covering the upper end of the shock absorber cylinder.

[0009] Preferably, a spring disc is welded to the lower part of the shock absorber cylinder, and a spring is provided between the spring disc and the dust cover.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] The rubber bushing is pressed between the inner and outer steel pipes and vulcanized integrally with them. An additional threaded tooth structure is provided on the inner side of the outer steel pipe, and the rubber bushing is threaded inside the outer steel pipe. This increases the contact area with the rubber and the bonding strength of the vulcanized steel pipe and rubber, making it difficult for the outer steel pipe and rubber bushing to separate. This improves the service life of the rubber bushing and ensures driving safety. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the lifting lug structure of this utility model.

[0014] In the diagram: 1. Upper lifting lug; 2. Rubber bushing; 3. Connecting rod; 4. Dust cover; 5. Dust shield; 6. Connecting rod; 7. Rubber block; 8. Washer; 9. Spring; 10. Shock absorber; 11. Spring disc; 12. Lower lifting lug; 13. Inner steel pipe; 14. Outer steel pipe; 15. Threaded teeth. Detailed Implementation

[0015] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Reference Figure 1-2 A shock absorber 10 with bushing anti-separation includes a shock absorber cylinder. The bottom end of the shock absorber 10 cylinder is connected to a lower lifting lug 12, and the upper end of the shock absorber 10 cylinder is connected to an upper lifting lug 1 via a connecting rod 3. The upper lifting lug 1 and the lower lifting lug 12, from the inside to the outside, include an inner steel pipe 13, a rubber bushing 2, and an outer steel pipe 14. The inner side of the outer steel pipe 14 connected to the rubber bushing 2 is provided with threaded teeth 15.

[0017] This solution proposes a shock absorber 10 that can effectively prevent bushing separation. The shock absorber 10 has a new type of bushing anti-detachment and anti-separation structure on the double lifting lugs at both ends of the shock absorber 10 cylinder. The rubber bushing 2 is set between the inner steel pipe 13 and the outer steel pipe 14. The inner and outer steel pipes 14 are interlocked to effectively prevent relative displacement between the rubber bushing 2 and the metal pipe. In this solution, the inner side of the outer steel pipe 14 is also provided with a threaded tooth structure 15. The rubber bushing 2 is threaded inside the outer steel pipe 14, which increases the contact area with the rubber on the one hand, and increases the bonding strength of the steel pipe and rubber vulcanization on the other hand, making it difficult for the outer steel pipe 14 to separate from the rubber bushing 2, improving the service life of the rubber bushing 2 and ensuring driving safety.

[0018] Furthermore, the rubber bushing 2 is embedded and press-fitted between the inner steel pipe 13 and the outer steel pipe 14.

[0019] The rubber bushing 2 is pressed into and installed between the inner steel pipe 13 and the outer steel pipe 14, and is vulcanized as a whole with the inner steel pipe 13 and the outer steel pipe 14. After vulcanization, the rubber bushing 2 is tightly embedded between the outer steel pipe 14 and the inner steel pipe 13, making it difficult for the outer steel pipe 14 to separate from the rubber bushing 2, thus ensuring driving safety when the shock absorber 10 is in use.

[0020] Furthermore, a washer 8 and a rubber buffer block are provided at the connection position between the connecting rod 3 and the cylinder of the shock absorber 10.

[0021] Furthermore, a dust cover 4 is provided on the upper part of the connecting rod 3, and a dust cover 5 is provided on the lower side of the dust cover 4, which covers the upper end of the shock absorber 10 cylinder.

[0022] Furthermore, a spring disc 11 is welded to the lower part of the shock absorber 10 cylinder, and a spring 9 is provided between the spring disc 11 and the dust cover 4.

[0023] Working principle: The shock absorber 10 has a new type of bushing anti-detachment and anti-separation structure on the double lifting lugs at both ends of the shock absorber 10 cylinder. The rubber bushing 2 is set between the inner steel pipe 13 and the outer steel pipe 14. The inner and outer steel pipes 14 are interlocked to effectively prevent relative displacement between the rubber bushing 2 and the metal pipe. In this design, the inner side of the outer steel pipe 14 is also provided with a threaded tooth structure 15. The rubber bushing 2 is threaded inside the outer steel pipe 14, which increases the contact area with the rubber on the one hand, and increases the bonding strength of the steel pipe and rubber vulcanization on the other hand, making it difficult for the outer steel pipe 14 to separate from the rubber bushing 2, improving the service life of the rubber bushing 2 and ensuring driving safety.

[0024] In the description of this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0025] In the description of this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the invention. In this invention, 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 a suitable manner in any one or more embodiments or examples. Moreover, those skilled in the art can combine different embodiments or examples and features of different embodiments or examples described in this invention without contradiction.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bushing anti-separation shock absorber characterized by: The shock absorber cylinder is connected with a lower hanger at the bottom end, and an upper hanger is connected with the upper end of the shock absorber cylinder through a connecting rod, the upper hanger and the lower hanger sequentially comprise an inner steel tube, a rubber bushing and an outer steel tube from inside to outside, and the outer steel tube is provided with screw teeth on the inner side surface connected with the rubber bushing.

2. A bushing anti-separation shock absorber according to claim 1, characterized in that: The rubber bushing is embedded and press-fitted between the inner steel tube and the outer steel tube.

3. A bushing anti-separation shock absorber according to claim 1, characterized in that: A gasket and a rubber buffer block are arranged at the connecting position of the connecting rod and the shock absorber cylinder.

4. A bushing anti-separation shock absorber according to claim 1, characterized in that: A dustproof cover is arranged at the upper portion of the connecting rod, the lower side of the dustproof cover is provided with a dustproof cover, and the dustproof cover covers the upper end of the shock absorber cylinder.

5. A bushing anti-separation shock absorber according to claim 1, characterized in that: A spring disc is welded at the lower portion of the shock absorber cylinder, and a spring is arranged between the spring disc and the dustproof cover.

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