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Automobile shock absorber piston rod

A technology of automobile shock absorbers and piston rods, applied in shock absorbers, springs/shock absorbers, shock absorbers, etc., can solve the problem that surface hardness and smoothness are inversely proportional to improve surface hardness and smoothness, and ensure safe use. Reliable, smooth-running and stable results

Active Publication Date: 2019-07-02
ZHEJIANG GOLD SHOCK ABSORBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are not many piston rods on the market that can meet the above conditions at the same time, mainly because the surface hardness and smoothness are often inversely proportional to the cost of the piston rod

Method used

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  • Automobile shock absorber piston rod
  • Automobile shock absorber piston rod

Examples

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Embodiment Construction

[0018] Examples, see figure 1 Shown: the automobile shock absorber piston rod, including the rod body 10. The upper end of the rod body 10 is fixedly connected with a piston, and the lower end is provided with a bracket thread 131 .

[0019] Further speaking:

[0020] The rod body 10 includes an intermediate tube 11 located in the middle, an upper connector 12 whose lower end is connected to the upper end of the intermediate tube 11 , and a lower connector 13 whose upper end is connected to the lower end of the intermediate tube 11 . The piston is fixed on the upper end of the upper connecting member 12 , and the bracket thread 131 is located on the lower outer surface of the lower connecting member 13 . That is to say, the middle part of the rod body 10 is a hollow structure.

[0021] The intermediate pipe 11 is prepared by a finish-rolled hollow steel pipe, and the upper connector 12 and the lower connector 13 are connected to the intermediate pipe 11 by friction welding....

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Abstract

The invention discloses an automobile shock absorber piston rod, which includes a rod body. The upper end of the rod body is fixedly connected with a piston, a bracket thread is formed in the lower end of the rod body, the rod body includes an intermediate pipe located in the middle, an upper connecting piece with the lower end connected to the upper end of the intermediate pipe and a lower connecting piece with the upper end connected to the lower end of the intermediate pipe, the piston is fixed to the upper end of the upper connecting piece, and the bracket thread is located on the outer surface of the lower part of the lower connecting piece; the intermediate pipe is made from a precision rolled hollow steel pipe, and the upper connecting piece and the lower connecting piece are connected with the intermediate pipe in a friction welding mode; and the exterior of the intermediate tube is subjected to surface treatment, the treatment successively includes the following steps that: nickel is plated by 30-40 [mu]m and then the exterior of the intermediate tube is cut off by 10-15 [mu]m; chromium is plated by 40-50 [mu]m; salt fog treatment is conducted for at least 48 h, and the fog level is 10 or above. The automobile shock absorber piston rod has the advantages of low cost and safe and reliable use.

Description

technical field [0001] The invention relates to the technical field of motor vehicle accessories, in particular to a piston rod of an automobile shock absorber. Background technique [0002] The shock absorber is one of the most important parts of the car, and the piston rod is one of the most important accessories in the shock absorber. Specifically, the piston rod should have a sufficiently smooth surface or a sufficiently hard surface hardness, and preferably the cost thereof can be reasonably controlled. However, there are not many piston rods on the market that can meet the above conditions at the same time, mainly because the surface hardness and smoothness are often inversely proportional to the cost of the piston rod. Contents of the invention [0003] Aiming at the deficiencies in the above-mentioned prior art, the object of the present invention is to provide a piston rod of an automobile shock absorber, which has the characteristics of low cost and safe and rel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F9/32C23C30/00
CPCC23C30/00F16F9/3221F16F2224/0208F16F2226/02F16F2230/24
Inventor 徐超
Owner ZHEJIANG GOLD SHOCK ABSORBER
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