External connection structure of shock absorber

Abstract

The invention discloses an external connection structure of a shock absorber. The external connection structure comprises an upper plate, a lower plate, vibration isolation rubber, studs and an innersleeve. A first through hole and a plurality of second through holes are formed in the upper plate, and the multiple second through holes are annularly formed in the circumferential direction of the first through hole at intervals. The lower plate is fixedly attached to the bottom face of the upper plate. A containing column is arranged on the bottom face of the lower plate in a protruding mode. Acontaining groove is formed in the axis position of the containing column in a concave mode. A third through hole is formed in the bottom face of the containing groove in a penetrating mode, and thevibration isolation rubber is contained in the containing groove. The inner sleeve is fixedly embedded in the vibration isolation rubber. A plurality of fourth through holes are formed in the lower plate and further located in the circumferential direction of the containing groove in a penetrating mode, and the studs sequentially penetrate through the fourth through holes and the second through holes and then are connected with an automobile body metal plate. Compared with the prior art, the vibration isolation rubber and the automobile body metal plate do not make relative torsional motion, abrasion of the vibration isolation rubber is reduced, and the service life is prolonged.

Description

technical field [0001] The invention relates to the technical field of shock absorbers, in particular to an external connection structure of a shock absorber. Background technique [0002] The shock absorber is one of the important components of the vehicle chassis. The lower end of the shock absorber is directly or indirectly connected to the wheel and the upper end is connected to the body, which not only affects the movement trajectory and grip characteristics of the wheel, but also transmits the excitation of the road surface to the vehicle body through the connection between the upper end and the body. Passengers affect crew comfort. The connection between the upper end of the shock absorber and the body not only affects the comfort and steering quality, but also affects the four-wheel alignment, resulting in vehicle deviation and tire wear. [0003] The shock absorber and its fixing method in the prior art are mainly that the shock absorber system installs the vibrati...

AI Technical Summary

Problems solved by technology

[0005] 1. The body rolls during the turning process, which causes the relative torsional movement of the body sheet metal and the vibration isolation rubber, resulting in abnormal friction noise

[0006] 2. During the steering process, the relative torsional movement of the body sheet metal and the vibration-isolation rubber, due to the elastic hysteresis of the rubber, the steering response is slow and the driving quality is affected

[0007] 3. The relative torsion between the body sheet metal and the vibration-isolation rubber, as well as static friction and other movements cause the vibration-isolation rubber to wear quickly

[0008] 4. In the process of turning back to the center, due to the elastic deformation of the vibration isolation rubber, the return to the center is not smooth or even stuck

[0009] 5. Because the piston rod of the shock absorber is easy to rotate (the inherent characteristics of the piston rod), it is easy to produce the integral rotation of the installation end cover, the nut and the piston rod during the tightening process of the production assembly nut, making it difficult for the nut to reach the installation torque

[0010] 6. The installation end cover and body sheet metal are thin plate stamping parts with low precision. At the same time, the distance between the end cover and the body sheet metal joint is long from the center of the nut, which is easy to deform and cause torque to loosen and retreat, resulting in abnormal noise and falling off

[0011] 7. The installation and positioning of the shock absorber and the body sheet metal are not clear, and the assembly deviation is large

Affect the four-wheel alignment and cause vehicle deviation, tire wear and other faults

[0012] 8. The shock absorber is inconvenient to disassemble and assemble during the maintenance process, which is different from the assembly process. The friction between the vibration isolation rubber and the body sheet metal increases with the increase of the torque during the assembly process, which can avoid the integrated rotation of the installation end cover, nut and piston rod, while the disassembly process is easy. Tends to cause integral rotation of the mounting cap, nut and piston rod

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