A gapless viscous damper

By using sealing components and protective structures in the damper, the gap problem caused by easy damage to the sealing structure is solved, achieving gapless movement and enhanced sealing effect, thus improving the performance of the damper.

CN224944167UActive Publication Date: 2026-11-06JIANGSU JIALIDE NEW MATERIAL TECH CO LTD
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Patent Information

Application Number
CN202522029244.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-09-22
Publication Date
2026-11-06
Estimated Expiration
2035-09-22

AI Technical Summary

Technical Problem

When the existing damper cylinder rod moves up and down in the cylinder body, the sealing structure is easily damaged, resulting in the formation of gaps, which affects the sealing effect and damping performance.

Method used

The design employs a sealing assembly including an outer sealing sheet, a viscous silicone oil pack, a rubber ring, and a spring. Combined with a protective bellows and a positioning disc structure, this ensures gapless movement between the piston rod and the cylinder, enhancing the sealing effect, and the viscous silicone oil pack cushions vibrations.

Benefits of technology

It achieves gapless movement between the piston rod and the cylinder, improves the sealing effect and the service life of the damper, and enhances dust protection and angle adjustability.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224944167U_ABST
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Abstract

This utility model discloses a gapless viscous damper, relating to the field of damper technology. It includes a cylinder and a sealing assembly. A piston rod is disposed inside the cylinder. The sealing assembly, used to enhance the sealing effect, is disposed inside the end of the cylinder. The sealing assembly includes an outer sealing sheet, a viscous silicone oil pack, a rubber ring, a spring, and a separating rubber sheet. The lower end of the outer sealing sheet is connected to the viscous silicone oil pack, and a rubber ring is disposed on the outer side of the viscous silicone oil pack. This gapless viscous damper uses the viscous silicone oil pack to seal between the piston rod and the cylinder. When the piston rod extends or retracts, the silicone oil inside the viscous silicone oil pack flows according to the vibration of the piston rod, ensuring that the viscous silicone oil pack and the piston rod always maintain a gapless state. The viscous silicone oil pack also buffers the vibration. The annularly distributed spring, in conjunction with the rubber ring, ensures better contact between the viscous silicone oil pack and the piston rod, increasing the sealing effect.
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