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High-strength piston rod to reduce oil leakage

A high-strength, piston rod technology, applied in the direction of shock absorbers, shock absorbers, springs/shock absorbers, etc., can solve the problems of easy peeling or corrosion of the coating, discounted sealing effect, etc., to increase wear resistance and reduce leakage The probability of oil, the effect of good sealing effect

Active Publication Date: 2020-11-27
浙江新海动力设备股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the coating is prone to chipping or corrosion, and after a period of use, the sealing effect will be greatly reduced

Method used

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  • High-strength piston rod to reduce oil leakage
  • High-strength piston rod to reduce oil leakage

Examples

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Embodiment Construction

[0017] Examples, see figure 1 with figure 2 Shown: the high-strength piston rod that reduces oil leakage, including the rod body 10. The upper end of the rod body 10 is provided with a piston 20 , and the lower end is provided with an external thread 11 for connecting a support nut. Meanwhile, the lower part of the rod body 10 is sheathed with an oil seal 30 .

[0018] Further speaking:

[0019] The rod body 10 is made of a hollow aluminum-magnesium alloy tube, and the outer surface of the rod body 10 is provided with an alumina ceramic layer 12 . The aluminum-magnesium alloy tube is used to prepare the rod body 10, so that the alumina ceramic layer 12 and the rod body 10 can be closely combined. The oil seal 30 is sleeved on the outside of the alumina ceramic layer 12 . In this way, since the alumina ceramic layer 12 has a better surface finish, the oil seal 30 can exert a better sealing effect, and the surface hardness of the rod body 10 is improved to a certain extent...

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PUM

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Abstract

The invention discloses a high-strength piston rod capable of reducing oil leakage. The high-strength piston rod comprises a rod body, a piston is arranged at the upper end of the rod body, an outer thread used for being connected with a supporting seat nut is arranged at the lower end of the rod body, meanwhile, an oil seal sleeves the lower part of the rod body, the rod body is prepared form aninternal-hollow aluminum-magnesium alloy pipe, an aluminum oxide ceramic layer is arranged on the outer surface of the rod body, the oil seal sleeves the exterior of the aluminum oxide ceramic layer,meanwhile, a trapezoidal thread is arranged on the position, on the upper part of the oil seal, of the lower part of the rod body, the trapezoidal thread is in threaded connection with a nut preparedform a plastic material, and a rubber outer ring sleeves the exterior of the nut. The high-strength piston rod has the advantage that the probability of oil leakage is greatly decreased.

Description

technical field [0001] The invention relates to the technical field of motor vehicle accessories, in particular to a high-strength piston rod that reduces oil leakage. Background technique [0002] The piston rod in the shock absorber ensures the sealing of the hydraulic oil between the rod body and the inner cavity of the shock absorber through an oil seal. At present, in order to achieve a better sealing effect, an oil seal is often used on the outside of the rod body, and in order to achieve a better effect, the outside of the rod body is mostly provided with a coating for improving the surface finish of the rod body. However, the coating is easy to peel off or corrode, and then after a period of use, the sealing effect will be greatly reduced. Contents of the invention [0003] The object of the present invention is to provide a high-strength piston rod that reduces oil leakage, which has the characteristics of greatly reducing the probability of oil leakage. [0004...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F9/32F16F9/36C22C21/02
Inventor 李惠英
Owner 浙江新海动力设备股份有限公司