Oil seal and shock absorber

By setting up a connected ventilation groove on the outer wall of the oil seal, the problem that the oil seal is prone to bulge during the shock absorber assembly process is solved, and internal air is discharged before the spinning seal is achieved, simplifying the assembly process and improving the yield rate.

CN119641844APending Publication Date: 2025-03-18QINGDAO REGENCY OIL SEAL CO LTD
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Patent Information

Application Number
CN202411806745.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-10
Publication Date
2025-03-18

AI Technical Summary

Technical Problem

During the assembly of the shock absorber, the oil seal is prone to bulge out when the piston rod moves downward, resulting in the inability to spin the seal, affecting the yield rate.

Method used

An oil seal is designed, and its outer wall is equipped with a ventilation groove connecting both end faces. The ventilation groove extends along the circumference of the outer wall of the oil seal to discharge internal air when the piston rod moves downward to prevent the oil seal from bulging out.

Benefits of technology

Through the design of the ventilation groove, internal air is discharged before the spin seal to avoid the oil seal from bulging out, simplifying the assembly process and improving yield.

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Abstract

The invention discloses an oil seal and a shock absorber, and relates to the technical field of oil seal design, the oil seal is used for being arranged on a guider of the shock absorber and between a piston rod and an outer cylinder, and the outer wall of the oil seal is provided with a vent groove communicated with the two end faces of the oil seal. After the oil seal provided by the invention is assembled and before spinning sealing, when the piston rod moves downwards, air in the shock absorber can be exhausted from the vent groove, so that the oil seal is prevented from bulging out when the piston rod moves downwards, subsequent spinning sealing of an outer cylinder is facilitated, and the yield is improved.
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