Title:
VIBRATION-DAMPING DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/041056
Kind Code:
A1
Abstract:
This vibration-damping device (10) comprises: a partitioning member (17) that forms a main liquid chamber (14), a first auxiliary liquid chamber (15), and a second auxiliary liquid chamber (16); a first diaphragm (18) that constitutes a portion of the wall surface of the first auxiliary liquid chamber (15); and a second diaphragm (19) that constitutes a portion of the wall surface of the second auxiliary liquid chamber (16), and that has a smaller deformation resistance than the deformation resistance of the first diaphragm (18). The partitioning member (17) is provided with: an idle orifice (31) that connects the main liquid chamber (14) and the first auxiliary liquid chamber (15), and that produces resonance with respect to the input of an idle vibration; and a shake orifice (32) that connects the main liquid chamber (14) and the second auxiliary liquid chamber (16), and that produces resonance with respect to the input of a shake vibration. An adjustment chamber (24) having an interior that is decompressed/compressed with respect to standard pressure, or that is open such that the same can be blocked off, is provided adjacent to the second auxiliary liquid chamber (16) across the second diaphragm (19). This configuration offers damping characteristics against vibrations over a wide range of frequencies.
Inventors:
KOJIMA HIROSHI (JP)
Application Number:
PCT/JP2014/073202
Publication Date:
March 26, 2015
Filing Date:
September 03, 2014
Export Citation:
Assignee:
BRIDGESTONE CORP (JP)
International Classes:
F16F13/18; F16F13/26
Foreign References:
| JP2005076797A | 2005-03-24 | |||
| JPH0544767A | 1993-02-23 | |||
| JPH0678644U | 1994-11-04 | |||
| JP2012172832A | 2012-09-10 |
Other References:
See also references of EP 3048332A4
Attorney, Agent or Firm:
SHIGA Masatake et al. (JP)
Masatake Shiga (JP)
Masatake Shiga (JP)
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