Vibration-damping device

Abstract

A vibration-damping device (1) is provided with a tubular first mounting member (6), a second mounting member (7), a rubber elastic body (8), a diaphragm (5), and a partitioning member (4). The partitioning member (4) consists as a whole of an elastic substance. The first mounting member (6) is provided with a projection (60) and a first tubular section (62). An annular hard member (50) is mounted on the inner side of the first tubular section (62), and the hard member (50) is provided with a second tubular section (53) and a supporting section (54). Further, either of the first and second tubular sections (62, 53) is mounted on the inner side of the other. A member (6) having the other tubular section (62) has formed thereon an engaging section (60) with which one end of the one tubular member (53) is engaged and also has a staking section (64) bent radially inward to lock the other end of the one tubular section (53). The one tubular section (53) is sandwiched between the engaging section (60) and the staking section (64), and the partitioning member (4) is held between the projection section (60) and the supporting section (54). The vibration-damping device (1) can, even if thepartitioning member consisting of the elastic substance is used therein, stably maintain characteristics thereof while reliably maintaining sealing ability thereof.

Description

technical field [0001] The present invention relates to an anti-vibration device used when, for example, a vibration-generating part such as an engine of an automobile is attached to a vibration-receiving part such as a vehicle body. [0002] This application claims priority based on Japanese Patent Application No. 2008-98084 for which it applied in Japan on April 4, 2008, and uses the content here. Background technique [0003] As such an anti-vibration device, a conventional device having a configuration such as Patent Document 1 below is known. The device includes: a cylindrical first mounting member that is connected to a vibration receiving part such as a vehicle body; a second mounting member that is connected to a vibration generating part such as an engine; and a rubber elastic body that elastically connects the first mounting member and the second mounting member. member, and close the opening end of the upper side of the first mounting member; the diaphragm, which...

AI Technical Summary

Problems solved by technology

[0005] However, in the above-mentioned conventional anti-vibration device, when the holder is covered on the first mounting member, the diaphragm is pressed upward by the holder, and the partition member is pressed upward by the diaphragm. Reduced, so that the sealing of the liquid chamber is reduced

Therefore, in order to ensure the sealing performance, it is necessary to increase the above-mentioned pressing force, but due to strong pressing, the partition member entirely made of rubber is compressed and deformed.

Therefore, there is a problem that the deformation state of the entire partition member made of rubber changes depending on the pressing condition, and the characteristics are unstable.

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