Bushing for automobile shock absorber

Abstract

The utility model discloses a bushing for automobile shock absorber, include: inner sleeve, rubber bushing and outer sleeve, rubber bushing is set up between inner sleeve and outer sleeve, one end of inner sleeve is equipped with the outer expansion ring, is equipped with the surrounding department on the outer expansion ring, and the annular clamping groove is formed between the surrounding department and rubber bushing, and the annular clamping groove is compatible with outer sleeve, the snap spring is sleeved on the outer sleeve, and the snap spring is equipped with the limiting portion, and the outer wall of outer sleeve is equipped with the limiting recess hole corresponding with limiting portion, and the outer wall of surrounding department is equipped with the positioning through -hole corresponding with limiting portion, and limiting portion stretches into limiting recess hole from positioning through -hole to restrict outer sleeve free activity. The utility model discloses novel structure, compared with the fixed mode that inner sleeve is connected through a plurality of bolts outer sleeve in prior art, and the dismounting is more quick, and the time is saved and practical.

Description

Technical Field

[0001] This utility model belongs to the technical field of automotive shock absorber accessories, and in particular relates to bushings for automotive shock absorbers. Background Technology

[0002] The purpose of automotive shock absorbers is to rapidly dampen vibrations from the vehicle frame and body, improving ride smoothness and comfort. Rubber bushings are commonly used in flexible connections between automotive assemblies and on shock absorbers. Their structure mainly involves bonding the rubber bushing to the outer and inner metal sleeves with adhesive. Over time, this adhesive can easily detach, causing the rubber bushing to loosen and affecting its damping effect. Furthermore, replacing the rubber bushing is inconvenient.

[0003] The existing patent document "A bushing for an automobile shock absorber" (publication number: CN215257545U) discloses that "the lower end of the inner sleeve has a protruding ring with an installation ring, and the installation ring is threaded with a countersunk screw connected to the lower end face of the outer sleeve". This requires the use of multiple countersunk screws, which has the problems of low disassembly and assembly efficiency and laborious inconvenience. Summary of the Invention

[0004] The purpose of this utility model is to solve the above-mentioned technical problems existing in the prior art, and to provide a bushing for automotive shock absorbers. It has a novel structure and, compared with the connection method of the inner sleeve to the outer sleeve by multiple bolts in the prior art, it is quicker to disassemble and assemble, saving time and being more practical.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A bushing for automotive shock absorbers includes an inner sleeve, a rubber sleeve, and an outer sleeve, with the rubber sleeve fitted between the inner and outer sleeves. The inner sleeve is characterized by an expanding ring at one end, a retaining portion on the expanding ring, and an annular groove formed between the retaining portion and the rubber sleeve, which fits into the outer sleeve. A retaining spring is fitted onto the outer sleeve, the retaining spring having a limiting portion. A limiting recess corresponding to the limiting portion is provided on the outer wall of the outer sleeve, and a positioning through hole corresponding to the limiting portion is provided on the outer wall of the retaining portion. The limiting portion extends from the positioning through hole into the limiting recess to restrict the free movement of the outer sleeve. This bushing structure is novel, and compared to the existing technology where the inner sleeve is connected to the outer sleeve by multiple bolts, disassembly and assembly are quicker, saving time and being more practical.

[0007] Furthermore, both ends of the retaining spring have inward protrusions, and the outer wall of the enclosure has corresponding limiting grooves. Inserting the inward protrusions into the limiting grooves secures the retaining spring to the enclosure, limiting both ends simultaneously and preventing it from easily falling off, thus ensuring high stability. Pushing the retaining spring outwards causes the inward protrusions to disengage from the limiting grooves, replacing the bolt connection method for quick assembly and disassembly.

[0008] Furthermore, a limiting protrusion is provided on the outer wall of the inner sleeve, and a limiting groove corresponding to the limiting protrusion is provided on the inner wall of the rubber sleeve. By fitting the limiting groove onto the limiting protrusion, the rubber sleeve is positioned and fitted onto the inner sleeve, reducing positioning difficulty, improving installation efficiency, and simplifying disassembly and assembly. It replaces the vulcanized one-piece structure, making it easy to replace the rubber sleeve individually, thus reducing maintenance difficulty and cost.

[0009] Furthermore, a rubber baffle is snapped into the inner side of the outer sleeve. The rubber baffle, together with the outer expansion ring, restricts the axial movement of the rubber sleeve. Both ends of the rubber sleeve are blocked at the same time, preventing axial movement and ensuring high stability. The rubber baffle is elastic and easy to disassemble and assemble after deformation.

[0010] Furthermore, the inner wall of the outer sleeve is provided with a groove corresponding to the rubber baffle. After the rubber baffle is squeezed and deformed, it is embedded into the groove to achieve limiting and fixing. The rubber baffle returns to its original shape, effectively sticking to the rubber sleeve and preventing the axial movement of the rubber sleeve. It is simple to disassemble and assemble, and can be used immediately, making it flexible and convenient.

[0011] Furthermore, the surface of the inner sleeve is coated with a wear-resistant layer, which improves the wear resistance of the inner sleeve, making it less prone to wear and rust, and extending its service life.

[0012] Furthermore, the outer tube is coated with an anti-aging layer, which improves its aging resistance, making it less prone to aging and extending its service life.

[0013] This utility model, by adopting the above-mentioned technical solution, has the following beneficial effects:

[0014] During assembly, first, the rubber sleeve is fitted onto the inner sleeve, and then the outer sleeve is embedded into the annular groove, aligning the limiting recess with the positioning through hole to achieve the outer sleeve being fitted onto the rubber sleeve. Then, the inner protrusion is inserted into the limiting groove, and the limiting part extends from the positioning through hole into the limiting recess, thus fixing the retaining spring to the enclosure. Both ends of the retaining spring are simultaneously limited, making it less prone to free fall and ensuring high stability. The retaining spring restricts the circumferential rotation and axial movement of the outer sleeve through the limiting part, achieving the limiting and fixing of the outer sleeve. Pushing the retaining spring outward causes the inner protrusion to disengage from the limiting groove, allowing the retaining spring to be removed, and the outer sleeve to be separated from the inner sleeve. Compared to the existing technology where the inner sleeve is connected to the outer sleeve by multiple bolts, the disassembly and assembly are faster, saving time and being more practical. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of the structure of the bushing for the automotive shock absorber of this utility model;

[0017] Figure 2 This is a schematic diagram of the inner sleeve in this utility model;

[0018] Figure 3 This is a schematic diagram of the connection between the inner sleeve and the rubber sleeve in this utility model;

[0019] Figure 4 This is a schematic diagram of the connection between the outer sleeve and the rubber baffle in this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the rubber sleeve in this utility model;

[0021] Figure 6 This is a schematic diagram of the snap ring structure in this utility model;

[0022] Figure 7 This is a cross-sectional structural diagram of the present invention.

[0023] In the diagram: 1-Inner sleeve; 2-Rubber sleeve; 3-Outer sleeve; 4-Outer expansion ring; 5-Blocking part; 6-Annular groove; 7-Snap ring; 8-Limiting part; 9-Limiting recessed hole; 10-Positioning through hole; 11-Inner protrusion; 12-Limiting groove; 13-Limiting protrusion; 14-Limiting groove; 15-Rubber baffle; 16-Embedded groove. Detailed Implementation

[0024] like Figures 1 to 7 As shown, this utility model relates to a bushing for an automotive shock absorber, comprising: an inner sleeve 1, a rubber sleeve 2, and an outer sleeve 3. The rubber sleeve 2 is fitted between the inner sleeve 1 and the outer sleeve 3. One end of the inner sleeve 1 has an outer expansion ring 4, and the outer expansion ring 4 has a retaining portion 5. The inner sleeve 1, the outer expansion ring 4, and the retaining portion 5 are integrally formed, allowing for rapid molding without seams and ensuring a stable structure. An annular groove 6 is formed between the retaining portion 5 and the rubber sleeve 2, which is adapted to the outer sleeve 3. A retaining spring 7 is fitted onto the outer sleeve 3. The retaining spring 7 is made of spring steel, and a limiting portion 8 is provided on the inner side of the retaining spring 7. A limiting recess 9 corresponding to the limiting portion 8 is provided on the outer wall of the outer sleeve 3. A positioning through hole 10 corresponding to the limiting portion 8 is provided on the outer wall of the retaining portion 5. Both ends of the retaining spring 7 have inner protrusions 11, and the outer wall of the retaining portion 5 has limiting grooves 12 corresponding to the inner protrusions 11.

[0025] During assembly, first, the rubber sleeve 2 is fitted onto the inner sleeve 1, and then the outer sleeve 3 is embedded into the annular groove 6, so that the limiting recess 9 is aligned with the positioning through hole 10, thus allowing the outer sleeve 3 to be fitted onto the rubber sleeve 2. Then, the inner protrusion 11 is inserted into the limiting groove 12, and the limiting part 8 extends from the positioning through hole 10 into the limiting recess 9, thus fixing the retaining spring 7 onto the enclosure part 5. Both ends of the retaining spring 7 are simultaneously limited, making it difficult to fall off freely and ensuring high stability. The retaining spring 7 restricts the circumferential rotation and axial movement of the outer sleeve 3 through the limiting part 8, thus fixing the outer sleeve 3. Pushing the retaining spring 7 outward causes the inner protrusion 11 to disengage from the limiting groove 12, allowing the retaining spring 7 to be removed, and then the outer sleeve 3 to be separated from the inner sleeve 1. Compared with the existing technology where the inner sleeve 1 is connected to the outer sleeve 3 by multiple bolts, the disassembly and assembly are quicker, saving time and being more practical.

[0026] The inner sleeve 1 has a limiting protrusion 13 on its outer wall, and the rubber sleeve 2 has a limiting groove 14 on its inner wall that corresponds to the limiting protrusion 13. The limiting groove 14 is fitted onto the limiting protrusion 13, so that the rubber sleeve 2 is positioned and fitted onto the inner sleeve 1. This reduces the positioning difficulty, improves the installation efficiency, and makes disassembly and assembly simple. It replaces the vulcanized one-piece structure, makes it easy to replace the rubber sleeve 2 separately, and reduces the maintenance difficulty and cost.

[0027] A rubber baffle 15 is snapped onto the inner side of the outer sleeve 3. The rubber baffle 15 has a central through hole. The diameter of the central through hole is smaller than the inner diameter of the rubber sleeve 2, and the diameter of the central through hole is larger than the inner diameter of the inner sleeve 1. The rubber baffle 15, together with the outer expansion ring 4, restricts the axial movement of the rubber sleeve 2. Both ends of the rubber sleeve 2 are blocked at the same time, and it cannot move axially. It has high stability. The rubber baffle 15 is elastic and can be easily disassembled and assembled after deformation.

[0028] The inner wall of the outer sleeve 3 is provided with a groove 16 corresponding to the rubber baffle 15. The groove 16 is annular. After the rubber baffle 15 is squeezed and deformed, it is embedded into the groove 16 to achieve limiting and fixing. The rubber baffle 15 returns to its original shape, effectively sticking to the rubber sleeve 2 and preventing the axial movement of the rubber sleeve 2. It is simple to disassemble and assemble, and can be used immediately. It is flexible and convenient.

[0029] The surface of the inner sleeve 1 is coated with a wear-resistant layer, which is a silicon carbide coating. This improves the wear resistance of the inner sleeve 1, making it less prone to wear and rust, and extending its service life.

[0030] The surface of the outer tube 3 is coated with an anti-aging layer, which is a zinc silicate coating layer. This improves the aging resistance of the outer tube 3, making it less prone to aging and extending its service life.

[0031] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. Bushings for automotive shock absorbers, including: The inner sleeve, the rubber sleeve, and the outer sleeve are fitted between the inner sleeve and the outer sleeve; Its features are: One end of the inner sleeve is provided with an outer expansion ring, and the outer expansion ring is provided with a blocking part. An annular groove is formed between the blocking part and the rubber sleeve, and the annular groove is adapted to the outer sleeve. A retaining spring is fitted onto the outer tube, and the retaining spring has a limiting part. The outer wall of the outer tube has a limiting recess corresponding to the limiting part. The outer wall of the enclosure part has a positioning through hole corresponding to the limiting part. The limiting part extends from the positioning through hole into the limiting recess to restrict the free movement of the outer tube.

2. The bushing for an automotive shock absorber according to claim 1, characterized in that: Both ends of the retaining spring are provided with inward protrusions, and the outer wall of the enclosure is provided with a limiting groove corresponding to the inward protrusions.

3. The bushing for an automotive shock absorber according to claim 1, characterized in that: The outer wall of the inner sleeve is provided with a limiting protrusion, and the inner wall of the rubber sleeve is provided with a limiting groove corresponding to the limiting protrusion.

4. The bushing for an automotive shock absorber according to claim 1, characterized in that: A rubber baffle is snapped into the inner side of the outer sleeve, and the rubber baffle works with the outer expansion ring to restrict the axial movement of the rubber sleeve.

5. The bushing for an automotive shock absorber according to claim 4, characterized in that: The inner wall of the outer sleeve is provided with a groove corresponding to the rubber baffle.

6. The bushing for an automotive shock absorber according to claim 1, characterized in that: The surface of the inner sleeve is coated with a wear-resistant layer.

7. The bushing for an automotive shock absorber according to claim 1, characterized in that: The outer sleeve is coated with an anti-aging layer.

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