Hydraulic bushing

Abstract

The invention relates to the technical field of vibration reduction bushing manufacturing, and discloses a hydraulic bushing. The hydraulic bushing comprises an outer gluing piece and an inner gluingpiece, wherein the outer gluing piece comprises an outer pipe and an outer rubber body, the outer rubber body is glued to the inner wall of the outer pipe, the inner gluing piece comprises a middle pipe, an inner pipe and an inner rubber body, the inner pipe penetrates through the middle pipe, an upper through hole and a lower through hole which are oppositely formed are formed in the pipe wall ofthe middle pipe, the inner rubber body is glued between the middle pipe and the inner pipe, an upper groove and a lower groove are formed in the inner rubber body, an opening of the upper groove extends into the upper through hole, and an opening of the lower groove extends into the lower through hole; and the inner gluing piece is embedded in the outer gluing piece, an upper cavity is defined bythe upper groove and the inner wall of the outer gluing piece, a lower cavity is defined by the lower groove and the inner wall of the outer gluing piece, the upper cavity communicates with the lowercavity, and the upper cavity and the lower cavity are both filled with sealing liquid. The hydraulic bushing is simple in structure and easy to produce, can realize a damping function, and provides good vibration reduction and vibration isolation effects.

Description

Technical field[0001]The invention relates to the technical field of automobile manufacturing, in particular to a hydraulic bushing.Background technique[0002]In vehicle suspension design, flexible connections such as rubber bushings are usually used to meet the needs of vehicle vibration and noise reduction, and to obtain the required suspension kinematics. However, the existing rubber bushing not only has poor vibration damping effect, it needs to be used with a booster cylinder to meet the requirements, but also lacks damping function. It is necessary to add a shock absorber to provide damping, due to the gap between the rubber bush and the shock absorber Due to the constraints of assembly error and movement coordination, it is still difficult to achieve the required damping effect after the shock absorber is added.[0003]Therefore, a new type of hydraulic bushing is urgently needed to solve the above-mentioned problems.Summary of the invention[0004]The purpose of the present inven...

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Problems solved by technology

However, the existing rubber bushing not only has poor vibration damping effect, but also needs to be used with a booster cylinder to meet the requirements, and lacks damping function, so an additional shock absorber needs to be added to provide damping, because the gap between the rubber bush and the shock absorber Due to the constraints of assembly error and motion coordination, it is still difficult to achieve the required damping effect after adding a shock absorber

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