Bolt for automobile shock absorber

Abstract

The bolt for the automobile shock absorber comprises a bolt head, a first rod body, a second rod body, an oil expansion elastic sleeve and a rubber plug, the bolt head, the first rod body and the second rod body are sequentially connected, external threads are arranged on the second rod body, the first rod body is sleeved with the oil expansion elastic sleeve, the first rod body is tightly hooped by the oil expansion elastic sleeve, and the rubber plug is arranged on the first rod body. An oil injection hole is formed in the end portion of the bolt head or the end portion of the second rod body, a rubber plug is plugged at the oil inlet end of the oil injection hole, at least one oil outlet hole is formed in the side wall of the first rod body, the oil outlet hole is located in an area defined by the oil expansion elastic sleeve, and the oil outlet hole is communicated with the oil inlet hole. According to the utility model, the oil expansion elastic sleeve, the oil injection hole and the oil outlet hole are matched, so that the oil expansion elastic sleeve can be in close contact with a hole into which the bolt is plugged, the friction force between the bolt and the hole into which the bolt is plugged is increased, the bolt is not easy to loosen, and the reliability of bolt connection is ensured.

Description

[Technical field]

[0001] The utility model relates to the technical field of fasteners, in particular to the technical field of bolts. [Background technology]

[0002] In order to quickly attenuate the vibration of the frame and body and improve the smoothness and comfort of the car's driving, shock absorbers are generally installed on the car's suspension system. Some parts on the shock absorber are connected by bolts. Since the shock absorber often vibrates during normal operation, the bolts on it are required to have good anti-loosening performance. Once loosened, the shock absorber will easily fail, which will bring serious safety hazards. [Contents of the utility model]

[0003] The utility model aims to solve the problems in the prior art and provides a bolt for an automobile shock absorber, which can prevent the bolt from being easily loosened.

[0004] To achieve the above-mentioned purpose, the utility model proposes a bolt for an automobile shock absorber, comprising a bolt head, a first rod body, a second rod body, an oil-expanding elastic sleeve, and a rubber plug. The bolt head, the first rod body, and the second rod body are connected in sequence, the second rod body is provided with an external thread, the first rod body is covered with an oil-expanding elastic sleeve, the oil-expanding elastic sleeve tightly clamps the first rod body, an oil filling hole is provided at the end of the bolt head or the end of the second rod body, the oil inlet end of the oil filling hole is plugged with a rubber plug, at least one oil outlet hole is provided on the side wall of the first rod body, the oil outlet hole is located in the area surrounded by the oil-expanding elastic sleeve, and the oil outlet hole is connected to the oil inlet hole.

[0005] Preferably, the first rod body is provided with a ring-shaped first embedding groove, the inner side of the oil-expandable elastic sleeve is embedded in the first embedding groove, and the inner side of the oil-expandable elastic sleeve is closely attached to the bottom of the first embedding groove.

[0006] Preferably, two second embedding grooves are provided on the first rod body, the oil expansion elastic sleeve is located in the area sandwiched by the two second embedding grooves, and two oil suction rings corresponding to the second embedding grooves are sleeved on the first rod body, and the inner sides of the oil suction rings are embedded in the corresponding second embedding grooves.

[0007] Preferably, a circle of grooves is provided on the inner wall of the oil filling hole, and the rubber plug is provided with a plurality of protrusions adapted to the grooves, the protrusions are embedded in the grooves, and a blind hole is provided at the end of the rubber plug close to the oil expansion elastic sleeve, and the protrusions are located on the rubber plug section where the blind hole is located.

[0008] Beneficial effects of the utility model: the utility model matches the oil-expandable elastic sleeve, the oil filling hole and the oil outlet hole so that the oil-expandable elastic sleeve can be in close contact with the hole into which the bolt is inserted, thereby increasing the friction between the bolt and the inserted hole, making it difficult for the bolt to loosen, thereby ensuring the reliability of the bolt connection.

[0009] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings.

Brief Description of the Drawings

[0010] Figure 1 This is a front view of the first embodiment of the bolt for automobile shock absorber of the utility model;

[0011] Figure 2 It is a front view of a second embodiment of the bolt for automobile shock absorber of the utility model.

[0012] In the figure: 1-bolt head, 2-first rod body, 3-second rod body, 4-oil filling hole, 5-rubber plug, 21-first embedding groove, 22-oil expansion elastic sleeve, 23-second embedding groove, 24-oil suction ring, 30-external thread, 40-oil outlet hole, 45-slot, 50-blind hole, 55-bump. [Specific implementation method]

[0013] Implementation 1:

[0014] See also Figure 1 The utility model of a bolt for a shock absorber of an automobile comprises a bolt head 1, a first rod body 2, a second rod body 3, an oil-expanding elastic sleeve 22, and a rubber plug 5. The bolt head 1, the first rod body 2, and the second rod body 3 are connected in sequence. The second rod body 3 is provided with an external thread 30. The first rod body 2 is sleeved with an oil-expanding elastic sleeve 22, which tightly clamps the first rod body 2. An oil filling hole 4 is provided at the end of the bolt head 1, and a rubber plug 5 is plugged at the oil inlet end of the oil filling hole 4. At least one oil outlet hole 40 is provided on the side wall of the first rod body 2. The oil outlet hole 40 is located in the area surrounded by the oil-expanding elastic sleeve 22, and the oil outlet hole 40 is connected to the oil inlet hole.

[0015] In order to prevent the oil-expandable elastic sleeve 22 from sliding on the first rod body 2, a ring-shaped first embedding groove 21 is provided on the first rod body 2, and the inner side of the oil-expandable elastic sleeve 22 is embedded in the first embedding groove 21, and the inner side of the oil-expandable elastic sleeve 22 is tightly attached to the bottom of the first embedding groove 21.

[0016] In order to ensure that oil does not enter the second rod body 3, two second embedding grooves 23 are provided on the first rod body 2, and the oil expansion elastic sleeve 22 is located in the area sandwiched by the two second embedding grooves 23. Two oil suction rings 24 corresponding to the second embedding grooves 23 are sleeved on the first rod body 2, and the inner side of the oil suction ring 24 is embedded in the corresponding second embedding groove 23.

[0017] Embodiment 2:

[0018] See also Figure 2 The difference between this embodiment and the first embodiment is that the oil filling hole 4 in this embodiment is no longer arranged at the end of the bolt head, but is arranged at the end of the second rod body 3.

[0019] Working process of this utility model:

[0020] During the working process of the bolt for automobile shock absorber of the utility model, the bolt is passed through the corresponding hole and the nut is screwed on. After the assembly is completed, the rubber plug 5 is pulled out, and a proper amount of oil is injected into the oil filling hole 4. The oil flows out from the liquid outlet 40 and contacts the oil-expanding elastic sleeve 22. The oil-expanding elastic sleeve 22 expands when encountering the oil, and the friction between the oil-expanding elastic sleeve 22 and the hole and the friction between the oil-expanding elastic sleeve 22 and the bolt are increased. The bolt is not easy to loosen. After the oil filling is completed, the rubber plug 5 is plugged again.

[0021] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the protection scope of the present invention.

Claims

1. Bolts for automobile shock absorbers, characterized in that: The invention comprises a bolt head (1), a first rod body (2), a second rod body (3), an oil-expanding elastic sleeve (22), and a rubber plug (5); the bolt head (1), the first rod body (2), and the second rod body (3) are connected in sequence; the second rod body (3) is provided with an external thread (30); the first rod body (2) is covered with an oil-expanding elastic sleeve (22); the oil-expanding elastic sleeve (22) tightly clamps the first rod body (2); an oil injection hole (4) is provided at the end of the bolt head (1) or the end of the second rod body (3); the oil inlet end of the oil injection hole (4) is plugged with a rubber plug (5); at least one oil outlet hole (40) is provided on the side wall of the first rod body (2); the oil outlet hole (40) is located in the area surrounded by the oil-expanding elastic sleeve (22), and the oil outlet hole (40) is communicated with the oil inlet hole.

2. The bolt for automobile shock absorber according to claim 1, characterized in that: The first rod body (2) is provided with a ring-shaped first embedding groove (21), the inner side of the oil-expandable elastic sleeve (22) is embedded in the first embedding groove (21), and the inner side of the oil-expandable elastic sleeve (22) is tightly attached to the bottom of the first embedding groove (21).

3. The bolt for automobile shock absorber according to claim 1, characterized in that: The first rod body (2) is provided with two second embedding grooves (23), the oil expansion elastic sleeve (22) is located in the area sandwiched by the two second embedding grooves (23), and the first rod body (2) is sleeved with two oil suction rings (24) corresponding to the second embedding grooves (23) one by one, and the inner sides of the oil suction rings (24) are embedded in the corresponding second embedding grooves (23).

4. The bolt for automobile shock absorber according to claim 1, characterized in that: The inner wall of the oil filling hole (4) is provided with a circle of grooves (45), the rubber plug (5) is provided with a plurality of protrusions (55) adapted to the grooves (45), the protrusions (55) are embedded in the grooves (45), a blind hole (50) is provided at the end of the rubber plug (5) close to the oil expansion elastic sleeve (22), and the protrusions (55) are located on the section of the rubber plug (5) where the blind hole (50) is located.

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