Title:
LIQUID RING VIBRATION ISOLATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2012/165215
Kind Code:
A1
Abstract:
Provided is a two resonance-type liquid ring vibration isolation device that generates two resonances with only a damping orifice and a movable membrane with attached leg, and without providing an idle orifice, a valve mechanism for opening/closing same, etc. A damping orifice (14) and an elastic partition (30) are provided in a partition member (11) that partitions a main liquid chamber (12) from a secondary liquid chamber (13). A leg (35) is integrally formed to protrude from the lower surface of a movable membrane (31) provided in the central part of the elastic partition (30) and is pressed perpendicularly against a stopper surface (48), which is the upper surface of the bottom (46) of a frame member (40). Forming a third liquid chamber (50) between the outer circumference of the leg (35) and a supporting wall (44) and pressing the lower surface (38) of the leg (35) against the stopper surface (48) seals the third liquid chamber (50), traps the hydraulic fluid, and increases the internal pressure. When the leg (35) is separated from the stopper surface (48), the third liquid chamber (50) opens into the secondary liquid chamber (13) and the hydraulic fluid flows out of the third liquid chamber (50). A resonance is generated with the flowing of the hydraulic fluid, which results from said outflow, generating a second resonance that differs from a first resonance that results from the damping orifice.
Inventors:
HIRANO YUKINOBU (JP)
SATORI KAZUTOSHI (JP)
SATORI KAZUTOSHI (JP)
Application Number:
PCT/JP2012/063012
Publication Date:
December 06, 2012
Filing Date:
May 22, 2012
Export Citation:
Assignee:
YAMASHITA RUBBER KK (JP)
HIRANO YUKINOBU (JP)
SATORI KAZUTOSHI (JP)
HIRANO YUKINOBU (JP)
SATORI KAZUTOSHI (JP)
International Classes:
F16F13/18
Domestic Patent References:
| WO2011145656A1 | 2011-11-24 |
Foreign References:
| JP2002089614A | 2002-03-27 | |||
| JP2004251438A | 2004-09-09 | |||
| JP2008185152A | 2008-08-14 | |||
| JP2001200882A | 2001-07-27 |
Attorney, Agent or Firm:
KOMATSU Kiyomitsu (JP)
Kiyomitsu Komatsu (JP)
Kiyomitsu Komatsu (JP)
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