Connecting mechanism for car swing arm and frame

Abstract

The invention discloses a connecting mechanism for a car swing arm and a frame. The connecting mechanism consists of a bushing assembly and an elastic connecting mechanism, wherein the bushing assembly comprises an inner casing pipe, a left rubber sleeve, outer-diameter-side metal frameworks, middle metal frameworks, inner-diameter-side metal frameworks, an outer casing pipe, a right rubber sleeve and an air hole; the elastic connecting mechanism comprises a connecting bolt, a connecting nut, a perforated welding plate, a spring and a frame connecting piece; the perforated welding plate is welded on the outer circle circumference of the outer casing pipe; one end of the spring is mounted in a stepped hole of the perforated welding plate, and the other end is mounted in a stepped hole of the frame connecting piece; the connecting bolt sequentially penetrates through the stepped hole of the perforated welding plate, an inner hole of the spring and the stepped hole of the frame connecting piece and is locked by the connecting nut, the spring is in a compressed state, and a pre-tightening force is produced, so that the bushing assembly is elastically connected with the frame. The connecting mechanism is simple in structure, good in damping effect and beneficial to improvement on the comfort, the safety and the stability of driving.

Description

technical field [0001] The invention relates to the technical field of auto parts, in particular to a mechanism for connecting an auto swing arm and a vehicle frame. Background technique [0002] The car bushing is used to connect the car swing arm and the frame. Its main function is to absorb the shock and vibration generated by the front and rear brakes and the up and down swing of the wheel, and play a role in supporting and damping the frame. If the swing arm bush fails, it will affect the handling performance and comfort performance of the vehicle. At present, the automobile shock-absorbing bush is a kind of overall structure, which is in the shape of a cylinder, including an outer casing arranged on the outside, an inner casing is arranged inside the outer casing, and a shock-absorbing vulcanized rubber sleeve is installed between the inner casing and the outer casing, thereby Realize the fastening of the inner casing and the outer casing and the shock absorption of t...

AI Technical Summary

Problems solved by technology

If the swing arm bush fails, it will affect the handling performance and comfort performance of the vehicle

At present, the automobile shock-absorbing bush is a kind of overall structure, which is in the shape of a cylinder, including an outer casing arranged on the outside, an inner casing is arranged inside the outer casing, and a shock-absorbing vulcanized rubber sleeve is installed between the inner casing and the outer casing, thereby Realize the fastening of the inner casing and the outer casing and the shock absorption of the swing arm. On the one hand, the shock-absorbing bush is fitted on the swing arm as a whole with interference, and on the other hand, it is fixed on the frame through a rigid connection, connecting the frame and the swing arm During the operation of the car, various shocks and vibrations will be completely absorbed by the vulcanized rubber sleeve, resulting in wear and tear of the vulcanized rubber sleeve. However, the shock-absorbing bush and the swing arm have an interference fit, which cannot be repeatedly pressed and installed, and does not have separate disassembly and replacement. Therefore, to replace the vulcanized rubber sleeve, the entire swing arm must be replaced, which is not only time-consuming and laborious, but also expensive

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