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Double-rubber bushing

A rubber and bushing technology, applied in the field of bushings, can solve the problems of long length of high damping rubber main spring, affecting service life, and easy to be damaged, so as to improve fatigue performance, save practical use, and increase service life.

Pending Publication Date: 2021-03-26
NINGBO TUOPU GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing double rubber bushings, such as the double rubber bushings of the auxiliary frame, the double rubber bushings of the control arm, the double rubber bushings of the trailing arms, etc., are mostly cross-rib main spring structures (that is, double-rib high-damping rubber The main spring plus double-rib conventional rubber main spring), due to the preload in the main direction, the length of the high-damping rubber main spring is longer in the preload direction, and the length in the opposite direction of the preload is shorter. The damping rubber main spring is mainly subjected to extrusion conditions, and the shorter high-damping rubber main spring is mainly subjected to tensioning conditions. In the fatigue test, we found that the shorter high-damping rubber main spring is stretched for a long time. It is easy to be pulled and damaged, resulting in failure and affecting the overall service life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment one: if Figure 1 to Figure 4 As shown, a double-rubber bushing includes an inner tube 1 and an outer tube 2, the inner tube 1 is arranged inside the outer tube 2, and the center of the inner tube 1 is provided with a mounting hole 11 that penetrates up and down, and the inner tube 1 and the outer tube 2 A first rubber main spring is arranged between them, and the first rubber main spring is composed of two equal-length and symmetrically arranged first rubber bodies 3 on both sides of the inner tube 1. The two ends of the first rubber body 3 are respectively connected to the inner tube 1 The outer wall of the outer tube is connected to the inner wall of the outer tube 2, and a second rubber body 4 is arranged between the inner tube 1 and the outer tube 2, and the second rubber body 4 is arranged in the direction of preload and pressure, and the two ends of the second rubber body 4 The second rubber body 4 is perpendicular to the first rubber main spring, and ...

Embodiment 2

[0036] Embodiment two: if Figure 5 to Figure 8 As shown, the other parts are the same as the first embodiment, the difference is that the lower part of the inner tube 1 protrudes downwards from the outer tube 2 to form a protruding part 12, and a limit block 8 is arranged between the protruding part 12 and the lower rubber bumper 5 . The limiting block 8 can limit the radial movement of the outer tube 2 on the one hand, provide non-linear rigidity in the radial direction on the other hand, and play the role of shock absorption and buffering to improve comfort.

[0037] In this specific embodiment, the limiting block 8 has an installation through hole 81 that penetrates up and down and matches the extension part 12. The outer wall of the extension part 12 is covered with a rubber protective layer 9, and the inner wall of the installation through hole 81 Two positioning convex buckles 82 are arranged on the top, and the two positioning convex buckles 82 are arranged oppositely...

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Abstract

The invention discloses a double-rubber bushing. The double-rubber bushing comprises an inner pipe and an outer pipe, wherein the inner pipe is arranged in the outer pipe, and a mounting hole which isthrough up and down is formed in the center of the inner pipe. The double-rubber bushing is characterized in that a first rubber main spring is arranged between the inner pipe and the outer pipe, thefirst rubber main spring is composed of two first rubber bodies which are equal in length and are symmetrically arranged on two sides of the inner pipe, a second rubber body is arranged between the inner pipe and the outer pipe, the second rubber body is arranged in the preloading and pressing direction, the first rubber bodies are perpendicular to the first rubber main spring, and the damping ofthe second rubber body is larger than that of the first rubber bodies. The double-rubber bushing has the advantages that a T-shaped rubber main spring structure is formed by the two first rubber bodies and the second rubber body, the second rubber body with the higher damping is arranged in the preloading and pressing direction, the rubber main spring is not arranged in the preloading and pullingdirection, thus, the risk that the overall use performance and the service life of the bushing are influenced due to the fact that the rubber main spring is invalid and damaged due to pulling in thedirection is avoided, and the overall fatigue performance of the bushing is effectively improved.

Description

technical field [0001] The invention relates to a bush, in particular to a double rubber bush. Background technique [0002] The high-damping rubber main spring in the double-rubber bushing product provides high damping for the bushing, and its direction is the main working direction of the bushing. Therefore, the load condition borne in this direction is relatively harsh, and the fatigue problem has always been a technical difficulty. [0003] The existing double rubber bushings, such as the double rubber bushings of the auxiliary frame, the double rubber bushings of the control arm, the double rubber bushings of the trailing arms, etc., are mostly cross-rib main spring structures (that is, double-rib high-damping rubber The main spring plus double-rib conventional rubber main spring), due to the preload in the main direction, the length of the high-damping rubber main spring is longer in the preload direction, and the length in the opposite direction of the preload is shor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F1/38
CPCF16F1/3842
Inventor 潘涛蔡抒槿
Owner NINGBO TUOPU GROUP CO LTD
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