Composite bushing, shock absorber and manufacturing method thereof

Abstract

A composite bushing (100), comprising an inner tube (1) which extends axially, an elastic member (2) which is secured to the inner tube (1) and an outer tube (5) which encloses the periphery of the elastic member (2). The elastic member (2) is provided with an outer cylindrical surface (20), the outer cylindrical surface (20) being provided with a first groove (21) which is recessed in a radial direction and a second groove (22) opposite to the first groove (21); the composite bushing (100) comprises a first cushioning member (41) installed in the first groove (21) and a second cushioning member (42) installed in the second groove (22), the first cushioning member (41) and the second cushioning member (42) being pre-compressed in a radial direction by the outer tube (5), and the damping angles of the first cushioning member (41) and of the second cushioning member (42) being larger than the damping angle of the elastic member (2). Being provided in this way, the composite bushing (100) is able to attain both shock absorbing effect and controllability. Moreover, also provided with the composite bushing (100) are a shock absorber and a method for manufacturing the composite bushing (100).

Description

technical field [0001] The invention relates to a composite bush, a shock absorber with the composite bush and a manufacturing method of the composite bush, belonging to the field of shock absorption. Background technique [0002] With the continuous improvement of people's living standards, the requirements for the comfort and handling of automobiles are getting higher and higher, so the design and performance development of automobile shock absorbing parts are particularly important. [0003] CN 101509532A published on August 19, 2009 discloses a fluid-filled cylindrical vibration damping device. However, the durability of this design will be greatly challenged, such as the problem of fluid sealing. [0004] In order to improve durability and maintain good shock absorption and sound insulation effects, CN105257748A disclosed on January 20, 2016 discloses a new type of material suspension shock-absorbing bushing. Wherein, the middle elastic layer between the inner skeleton...

AI Technical Summary

Problems solved by technology

[0003] CN 101509532A published on August 19, 2009 discloses a fluid-filled cylindrical damping device, however, the durability of this design will be very challenged, such as fluid sealing problems

However, the cost of this design is relatively high, and the polyurethane material can only bear compressive load and cannot bear shear force, so the product structure design is limited, and the radial stiffness of the product is low, which has a certain impact on the handling of the vehicle

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