VIBRATION-DAMPING DEVICE

WIPO Patent Application WO/2011/099357

A1

A vibration-damping device is provided with: an elastic body which connects a first mounting member and a second mounting member which have a tubular shape; and a partition member (8) which partitions the liquid chamber within the first mounting member, the liquid chamber being filled with liquid, into a primary liquid chamber on one side and a secondary liquid chamber on the other side. The partition member (8) is provided with: limiting passages (70, 71) which cause the primary liquid chamber and the secondary liquid chamber to communicate with each other and which cause the input of vibration to generate liquid column resonance to thereby damp and reduce the vibration; switching means (1072, 2072) which switch between the resonance frequencies of the limiting passages (70, 71); a connection passage (74) which connects the primary liquid chamber and the secondary liquid chamber; a liquid pressure introducing passage (47) which communicates with the connection passage (74) and introduces the liquid pressure within the connection passage (74) into the switching means (1072, 2072) to operate the switching means (1072, 2072); and a thin film body (73) which is provided within the connection passage (74) and which blocks the communication between the primary liquid chamber and the secondary liquid chamber performed through the connection passage (74).

UEKI AKIRA (JP)
YANAGIDA MOTOHIRO (JP)

PCT/JP2011/051301

August 18, 2011

January 25, 2011

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BRIDGESTONE CORP (JP)
UEKI AKIRA (JP)
YANAGIDA MOTOHIRO (JP)

F16F13/26; F16F13/06; F16F13/18

JP2007120564A	2007-05-17
JP2006132666A	2006-05-25
JP2010223324A	2010-10-07
JP2010026770A	2010-02-04
JP2010114177A	2010-05-20
JP2004003615A	2004-01-08

See also references of EP 2535615A4

SHIGA Masatake et al. (JP)
Masatake Shiga (JP)

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