A rubber bushing for engine mount

CN224283312UActive Publication Date: 2026-05-26YANCHENG DINGJIA MASCH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
YANCHENG DINGJIA MASCH CO LTD
Filing Date
2025-07-17
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing engine mount rubber bushings are prone to concentrated vibration loads during use, leading to damage to the rubber layer and high friction noise, which affects user experience and lifespan.

Method used

The design adopts a three-stage stepped shaft structure for the inner skeleton and a three-stage stepped sleeve structure for the outer skeleton. Combined with the interlocking of rubber filling layer, buffer protrusions and grooves, and equipped with a polytetrafluoroethylene wear-resistant coating and buffer ring, a uniform vibration energy transmission and protection mechanism is formed.

Benefits of technology

It achieves uniform transmission of vibration energy, avoids stress concentration, reduces friction noise, extends the life of rubber bushings, and improves structural stability and cushioning performance.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

This utility model belongs to the field of engine equipment technology and discloses a rubber bushing for engine mounting, including a bushing body. The bushing body includes an inner skeleton and an outer skeleton. The inner skeleton is a three-stage stepped shaft structure, which is divided into a first cylindrical segment, a second cylindrical segment, and a third cylindrical segment with progressively increasing diameters from the top to the bottom of the inner skeleton. The inner surface of the outer skeleton is a three-stage stepped sleeve structure adapted to the inner skeleton. By setting the inner skeleton as a three-stage stepped shaft structure and the outer skeleton as a compatible three-stage stepped sleeve structure, this utility model makes the rubber filling layer adapt to the gap shape between the two. Furthermore, buffer protrusions are set on the surface of the skeleton and buffer grooves are set on the surface of the rubber filling layer. This allows the device to uniformly transmit vibration energy along the stepped surface to avoid stress concentration, and can also efficiently absorb vibration through the compression deformation of the protrusions and grooves, significantly improving the structural stability and buffering performance of the bushing.
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