Anti-vibration device

Abstract

Provided is an anti-vibration device comprising a novel structure which can position a main body rubber elastic part in either the width direction or the length direction of a second attachment member, and which can also achieve excellent load bearing resistance and durability. An anti-vibration device having a non-bonding structure in which a first attachment member and a second attachment member are arranged opposing each other and are linked by a main body rubber elastic part (16), wherein the second attachment member (14) has a groove shape provided with a bottom wall part (50) and a pairof sidewall parts (52a, 52b), portions of the bottom wall part (50) are cut and bent upward to form a pair of vertical wall parts (60a, 60b), and the main body rubber elastic part (16) is fitted in anon-bonding manner into a region enclosed by the pair of sidewall parts (52a, 52b),and the pair of vertical wall parts (60a, 60b). In addition, the outer peripheral surface of the main body rubber elastic part (16) is inwardly spaced apart from upper edge parts (64) and lateral edge parts (66) of the pair of vertical wall parts (60a, 60b) in the length direction.

Description

technical field [0001] The present invention relates to a vibration isolating device preferably used in, for example, an engine mount of an automobile or the like. Background technique [0002] Conventionally, a vibration isolator is known that is interposed between members constituting a vibration transmission system to isolate and connect these members, and application of the vibration isolator to an engine mount of an automobile or the like has been studied. The vibration isolator has a structure in which a first mounting member and a second mounting member mounted to one of the members constituting the vibration transmission system are elastically connected by a main body rubber elastic body. For example, the vibration isolator described in Japanese Patent Application Laid-Open No. 2006-177544 (Patent Document 1) has this structure, and has a structure in which a first mounting member and a second mounting member having a long plate shape are spaced apart from each other...

AI Technical Summary

Problems solved by technology

[0004] However, it is difficult to set a large protrusion height in the convex portion formed by bending by such a press, and the achievable load resistance is limited.

In addition, in the width direction of the second mounting member, since there are no protrusions for supporting the rubber elastic body of the main body, it is difficult to ensure the load resistance of the rubber elastic body of the main body, and the degree of freedom in tuning the spring constant is also limited.

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