Floating oil seal noise reduction structure

By introducing a wave-shaped contact surface and an elastic support ring structure into the floating oil seal, combined with highly adhesive damping grease in the damping cavity, the problem of high vibration and noise in traditional floating oil seals is solved, achieving a more effective noise reduction effect.

CN224497413UActive Publication Date: 2026-07-14QINGDAO SK MASCH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
QINGDAO SK MASCH CO LTD
Filing Date
2025-07-28
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Traditional floating oil seals exhibit significant vibration and noise, as well as severe frictional noise, in harsh environments. This is mainly due to the direct hard contact between the metal ring and the rubber ring, which causes vibration to be transmitted to the housing through the rigid structure. Additionally, the fretting wear on the end face generates irregular high-frequency noise.

Method used

By employing a wave-shaped contact surface component and an elastic support ring structure, and through the interference fit between the metal ring and the rubber sealing ring, combined with the highly adhesive damping grease in the damping cavity, a two-stage vibration reduction system is formed, which disrupts the coherence of sound waves and consumes collision energy, thereby achieving noise reduction.

Benefits of technology

It effectively reduces vibration and noise. Through the interference fit between the metal ring and the rubber ring and the design of the elastic support ring, it avoids the transmission of noise through direct hard contact. At the same time, it uses the viscoelastic buffer layer in the damping cavity to consume collision energy, thereby improving the noise reduction effect of the floating oil seal.

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Abstract

The utility model relates to floating oil seal technical field especially relates to a floating oil seal noise reduction structure, include: first metal ring and second metal ring, two rubber sealing rings are installed respectively in the opposite side of first metal ring and second metal ring, noise reduction subassembly includes: elastic support ring, the embedding in the outer circumference of first metal ring and second metal ring, the elastic support ring is in the multiple damping cavities of having opened, every damping cavity is filled with shock attenuation fluid. The utility model discloses the interference fit between metal ring and rubber sealing ring, avoided the direct hard contact of metal ring and rubber ring in traditional technology, make the vibration pass through rigid structure transmission to the shell, lead to the problem of big noise, utilize the double -stage damping system of elastic support ring and damping cavity constitution simultaneously, improved the noise reduction effect of floating oil seal.
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