Bushing assembly

Abstract

The utility model provides a lining assembly, and belongs to the technical field of automobile accessories. The problem that an existing bush is poor in rigidity is solved. The lining assembly comprises an inner lining pipe, the outer surface of the inner lining pipe is sleeved with a framework pipe, the framework pipe is filled with a vulcanized rubber sleeve, the outer surface of the framework pipe is sleeved with an outer lining pipe, and a lining opening is formed in the front side of the framework pipe. According to the utility model, the rigidity can be improved, the service life is prolonged, the inner wall of the shaft hole is protected, and the replacement cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts technology, and relates to an automotive chassis part, particularly a bushing assembly. Background Technology

[0002] Automotive bushings are important components that connect various parts of the car chassis. They mainly serve to buffer, dampen shocks, and absorb noise. They are usually made of materials such as rubber, plastic, or metal and are installed in the chassis suspension system, control arms, stabilizer bars, and other parts to reduce vibrations from the road surface and engine, thereby improving vehicle comfort and handling stability.

[0003] For example, Chinese patent literature discloses a bushing assembly [Application No.: 202223122886.6; Authorization Announcement No.: CN219866011U], which includes an elastic element, an inner skeleton, and an outer skeleton. The elastic element includes a collar and a protrusion. The collar has a first receiving cavity extending in a preset direction, and the protrusion is fixed to the inner surface of the first receiving cavity. The inner skeleton is received in the first receiving cavity, and the outer surface of the inner skeleton is provided with a groove corresponding to the protrusion, which holds and receives the protrusion. The outer skeleton has a second receiving cavity extending in a preset direction. The second receiving cavity is received in the elastic element, and the outer surface of the collar is in contact with the inner surface of the second receiving cavity.

[0004] The aforementioned bushing assembly can balance vehicle handling and NVH performance, but it also has the following drawbacks to some extent: poor bushing stiffness. The bushing assembly has relatively complex installation parts, resulting in poor stiffness and easy deformation under stress. In addition, after the connecting shaft is inserted into the shaft hole, long-term use will cause friction due to continuous stress, which will lead to wear on the shaft hole wall and increase replacement costs. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned problems in the prior art by providing a bushing assembly that can improve bushing stiffness, extend service life, protect the inner wall of the shaft hole, and reduce replacement costs.

[0006] The objective of this utility model can be achieved through the following technical solution: a bushing assembly, including an inner liner tube, a skeleton tube sleeved on the outer surface of the inner liner tube, a vulcanized rubber sleeve filled inside the skeleton tube, an outer liner tube sleeved on the outer surface of the skeleton tube, and a bushing opening on the front side of the skeleton tube.

[0007] This bushing assembly mainly consists of an inner liner tube, a skeleton tube, an outer liner tube, a vulcanized rubber sleeve, and a bushing opening. The inner liner tube, skeleton tube, outer liner tube, vulcanized rubber sleeve, and bushing opening can improve the bushing rigidity, extend its service life, protect the inner wall of the shaft hole, and reduce replacement costs.

[0008] In one of the aforementioned bushing assemblies, the inner liner tube has a through-hole, and the circumference of the through-hole is provided with limiting grooves. In practical applications, by setting the limiting grooves, a limiting function is provided, allowing the limiting slide plate on the surface of the bushing body to be inserted into the interior to limit its rotation and prevent it from rotating inside.

[0009] In one of the bushing assemblies described above, a protective bushing is installed inside the inner cavity of the inner liner tube, and limit rings are fused to the top and bottom of the outer surface of the inner liner tube. In practical applications, by setting the limit rings, a positioning function is provided to prevent the skeleton tube from shifting on the surface of the inner liner tube after prolonged use.

[0010] In one of the aforementioned bushing assemblies, the protective bushing includes a bushing body, the outer surface of which is fixedly connected to a limiting slide plate. In practical applications, the bushing body is made of styrene-butadiene rubber, which possesses good wear resistance.

[0011] In the aforementioned bushing assembly, the number of limiting slide plates is four, and they are distributed around the bushing body. The limiting slide plates and the bushing body are integrally formed.

[0012] Compared with existing technologies, this bushing assembly can improve rigidity, extend service life, protect the inner wall of the shaft hole, and reduce replacement costs during operation. Attached Figure Description

[0013] Figure 1 This is a sectional view of the bushing assembly.

[0014] Figure 2 This is a top view of the bushing assembly.

[0015] Figure 3 This is a top axonometric view of the inner liner tube of this bushing assembly.

[0016] Figure 4 This is an isometric view of the bushing assembly protecting the bushing.

[0017] In the figure: 1. Inner liner tube; 2. Skeleton tube; 3. Limiting retaining ring; 4. Protective bushing; 5. Outer liner tube; 6. Vulcanized rubber sleeve; 7. Bushing opening; 8. Limiting slide groove; 9. Shaft through hole; 10. Limiting sliding plate; 11. Bushing body. Detailed Implementation

[0018] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0019] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this bushing assembly includes an inner liner tube 1, a skeleton tube 2 fitted on the outer surface of the inner liner tube 1, a vulcanized rubber sleeve 6 filled inside the skeleton tube 2, an outer liner tube 5 fitted on the outer surface of the skeleton tube 2, and a bushing opening 7 on the front side of the skeleton tube 2.

[0020] The inner liner tube 1 has a shaft through hole 9 inside, and a limit groove 8 is formed around the inner cavity of the shaft through hole 9. A protective bushing 4 is installed in the inner cavity of the inner liner tube 1, and a limit retaining ring 3 is welded to the top and bottom of the outer surface of the inner liner tube 1.

[0021] The protective bushing 4 includes a bushing body 11, and a limiting slide plate 10 is fixedly connected to the outer surface of the bushing body 11. There are four limiting slide plates 10, which are distributed around the bushing body 11. The limiting slide plates 10 and the bushing body 11 are integrally formed.

[0022] In actual manufacturing, bushing openings 7 are made on the front side of the skeleton tube 2 and the outer liner tube 5. Then, during the installation process, the outer steel plate is inserted into the bushing opening 7. This increases the overall rigidity of the bushing and limits the installation position of the bushing. The protective bushing 4 is installed in the shaft through hole 9. Then, the connecting shaft is inserted into the protective bushing 4 and fixed. In this way, under frequent stress, the connecting shaft and the protective bushing 4 rub against each other and will not directly act on the inner wall of the shaft through hole 9. In this way, only the protective bushing 4 needs to be replaced later, and the shaft through hole 9 does not need to be replaced, reducing replacement costs.

[0023] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.

Claims

1. A bushing assembly, comprising an inner liner tube (1), characterized in that: The outer surface of the inner liner tube (1) is fitted with a skeleton tube (2), the skeleton tube (2) is filled with a vulcanized rubber sleeve (6), the outer surface of the skeleton tube (2) is fitted with an outer liner tube (5), and the front side of the skeleton tube (2) is provided with a bushing opening (7).

2. A bushing assembly according to claim 1, characterized in that: The inner liner tube (1) has a shaft through hole (9) inside, and a limit groove (8) is provided around the inner cavity of the shaft through hole (9).

3. A bushing assembly according to claim 1, characterized in that: The inner cavity of the inner liner tube (1) is equipped with a protective bushing (4), and the top and bottom of the outer surface of the inner liner tube (1) are welded with limit rings (3).

4. A bushing assembly according to claim 3, characterized in that: The protective bushing (4) includes a bushing body (11), and a limiting slide plate (10) is fixedly connected to the outer surface of the bushing body (11).

5. A bushing assembly according to claim 4, characterized in that: The number of the limiting slide plates (10) is four, and they are distributed around the bushing body (11). The limiting slide plates (10) and the bushing body (11) are integrally formed.

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