CN214189207U - Structure for preventing mutual friction abnormal sound of rubber in automobile bushing - Google Patents
Structure for preventing mutual friction abnormal sound of rubber in automobile bushing Download PDFInfo
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- CN214189207U CN214189207U CN202022989904.5U CN202022989904U CN214189207U CN 214189207 U CN214189207 U CN 214189207U CN 202022989904 U CN202022989904 U CN 202022989904U CN 214189207 U CN214189207 U CN 214189207U
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- bushing
- rubber sleeve
- rubber
- automobile
- abnormal sound
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Abstract
The utility model discloses a structure for preventing the mutual friction and abnormal sound of rubber in an automobile bushing, wherein the automobile bushing comprises an inner bushing, a rubber sleeve and an outer bushing which are sleeved in sequence from inside to outside, and both ends of the inner bushing are higher than both ends of the outer bushing; the rubber sleeve is characterized in that a pair of through buffer grooves are oppositely arranged on the rubber sleeve, each buffer groove is arc-shaped and provided with two large ends, sawteeth are arranged on the buffer grooves along the opposite side walls of the whole arc-shaped groove except the two large ends, and the rubber sleeve is fixed between the inner bushing and the outer bushing in a vulcanization mode. The sawteeth are arranged on the opposite side walls of the buffer groove, when the automobile runs on a bumpy road surface, the sawteeth-shaped rubber contacts first, and the stress generated by the contact is smaller than that of the bushing without the sawteeth, so that the abnormal sound risk of rubber friction in the bushing can be reduced, the NVH performance of the automobile is improved, and the pleasant driving feeling of a user is brought.
Description
Technical Field
The utility model belongs to the technical field of auto-parts, concretely relates to prevent structure of inside rubber looks friction abnormal sound of auto bush.
Background
An automotive suspension system connects the wheels with the vehicle body as an indispensable part of the entire vehicle. In order to provide good driving stability and riding comfort for the vehicle, a large number of rubber members are used at the connection points of the suspension system of the vehicle, such as the connection of a shock absorber to the vehicle body, the connection of a suspension lever to a knuckle, the connection of a suspension lever to the vehicle body, and the like. These rubber components have a significant impact on the overall vehicle damping, noise reduction and suspension performance.
To ensure the connection strength, the rubber member is not separately provided, and is usually disposed in the bushing. In the prior art, a bushing is composed of an inner bushing, a rubber sleeve and an outer bushing, and in order to improve a damping effect, a through buffer groove is formed in the rubber sleeve. When the automobile runs on a bumpy road, the opposite side walls of the buffer groove are in direct contact, and because the surface of the buffer groove is smooth, relative movement is easy to generate during contact, so that abnormal friction sound is generated.
SUMMERY OF THE UTILITY MODEL
The utility model provides a prevent the structure of the inside mutual friction abnormal sound of rubber of car bush can prevent thereby that dashpot surface direct contact from producing the friction abnormal sound.
Therefore, the utility model discloses the technical scheme who adopts does: a structure for preventing rubber inside an automobile bushing from mutual friction and abnormal sound comprises an inner bushing, a rubber sleeve and an outer bushing which are sequentially sleeved from inside to outside, wherein both ends of the inner bushing are higher than both ends of the outer bushing; the rubber sleeve is characterized in that a pair of through buffer grooves are oppositely arranged on the rubber sleeve, each buffer groove is arc-shaped and provided with two large ends, sawteeth are arranged on the buffer grooves along the opposite side walls of the whole arc-shaped groove except the two large ends, and the rubber sleeve is fixed between the inner bushing and the outer bushing in a vulcanization mode.
Preferably, in the above aspect, the inner hub has gear hobbing on both end surfaces. Usually, the inner bushing adopts a steel bushing, the support connected with the automobile bushing adopts aluminum alloy, the support is connected with the automobile bushing through a bolt, when the bolt is screwed down, the support is deformed due to the screwing-down pretightening force and is meshed with the hobbing arranged on the inner bushing, the friction coefficient between the support and the inner bushing can be increased, and therefore the occurrence of friction abnormal sound is prevented.
Preferably, two ends of the outer side of the rubber sleeve are flush with two ends of the outer bushing, two ends of the inner side of the rubber sleeve are flush with two ends of the inner bushing, and the middle of the rubber sleeve is in smooth transition, so that rubber is arranged outside the inner bushing, and the stress concentration state is prevented.
The utility model has the advantages that:
(1) the sawteeth are arranged on the opposite side walls of the buffer tank, when the automobile runs on a bumpy road surface, the sawteeth-shaped rubber contacts first, and the stress generated by the contact is smaller than that of the bushing without the sawteeth, so that the abnormal sound risk of rubber friction in the bushing can be reduced, the NVH performance of the automobile is improved, and a pleasant driving feeling is brought to a user;
(2) the rubber sleeve is fixed with the inner bushing and the outer bushing in a vulcanization mode, and the rubber sleeve can be prevented from loosening from the inner bushing and the outer bushing.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The invention will be further described by way of examples with reference to the accompanying drawings:
as shown in figure 1, the structure for preventing the mutual friction and abnormal sound of the rubber inside the automobile bushing comprises an inner bushing 1, a rubber bushing 2 and an outer bushing 3 which are sleeved in sequence from inside to outside, wherein both ends of the inner bushing 1 are higher than both ends of the outer bushing 3.
A pair of through buffer grooves 2a are oppositely arranged on the rubber sleeve 2, the buffer grooves 2a are arc-shaped and provided with two large ends, saw teeth are arranged on the opposite side walls of the whole arc-shaped groove except the two large ends of the buffer grooves 2a, and the rubber sleeve 2 is fixed between the inner bushing 1 and the outer bushing 3 in a vulcanization mode.
Preferably, the inner bush 1 is provided with gear hobbing on both end faces. Usually, the inner bushing 1 is made of a steel bushing, the support connected with the automobile bushing is made of aluminum alloy, the support is connected with the automobile bushing through a bolt, when the bolt is screwed down, the support is deformed due to the pretightening force of the screwing down and is meshed with the hobbing arranged on the inner bushing 1, the friction coefficient between the support and the inner bushing 1 can be increased, and therefore friction abnormal sound is prevented.
Preferably, two ends of the outer side of the rubber sleeve 2 are flush with two ends of the outer bushing 3, two ends of the inner side of the rubber sleeve 2 are flush with two ends of the inner bushing 1, and the middle of the inner side of the rubber sleeve 2 is in smooth transition, so that rubber is arranged outside the inner bushing 1, and the stress concentration state is prevented.
Claims (3)
1. The utility model provides a prevent inside rubber of auto bushing structure of friction abnormal sound each other, the auto bushing includes interior bush (1), rubber sleeve (2) and outer bush (3) of suit from inside to outside in proper order, and the both ends of interior bush (1) all are higher than the both ends of outer bush (3), its characterized in that: the rubber sleeve (2) is relatively provided with a pair of through buffer grooves (2a), the buffer grooves (2a) are arc-shaped and provided with two large ends, saw teeth are arranged on the buffer grooves (2a) along the opposite side walls of the whole arc-shaped grooves except the two large ends, and the rubber sleeve (2) is fixed between the inner bushing (1) and the outer bushing (3) in a vulcanization mode.
2. The structure for preventing the mutual friction and abnormal noise of the rubbers in the automobile bushing according to claim 1, wherein: and hobbing is arranged on both end surfaces of the inner bushing (1).
3. The structure for preventing the mutual friction and abnormal noise of the rubbers inside the automobile bushing according to claim 1 or 2, wherein: the two ends of the outer side of the rubber sleeve (2) are flush with the two ends of the outer bushing (3), the two ends of the inner side of the rubber sleeve (2) are flush with the two ends of the inner bushing (1), and the middle of the rubber sleeve is in smooth transition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022989904.5U CN214189207U (en) | 2020-12-12 | 2020-12-12 | Structure for preventing mutual friction abnormal sound of rubber in automobile bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022989904.5U CN214189207U (en) | 2020-12-12 | 2020-12-12 | Structure for preventing mutual friction abnormal sound of rubber in automobile bushing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214189207U true CN214189207U (en) | 2021-09-14 |
Family
ID=77652235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022989904.5U Active CN214189207U (en) | 2020-12-12 | 2020-12-12 | Structure for preventing mutual friction abnormal sound of rubber in automobile bushing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214189207U (en) |
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2020
- 2020-12-12 CN CN202022989904.5U patent/CN214189207U/en active Active
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