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Title:
VIBRATION ISOLATION DEVICE
Document Type and Number:
Japanese Patent JP2018194102
Kind Code:
A
Abstract:
To suppress generation of noise caused by cavitation breakdown without degrading vibration control characteristic with a simple structure.SOLUTION: A limiting passage 24 includes a first communication portion 26 opened to a first liquid chamber, a second communication portion 27 opened to a second liquid chamber, and a main body flow channel 25 for communicating the first communication portion and the second communication portion. At least one of the first communication portion and the second communication portion includes a plurality of pores 31, a connection part with at least one of the first communication portion and the second communication portion, in the main body flow channel is provided with a swirl chamber 25b forming swirl flow of liquid according to a flow speed of the liquid from the other side of the first communication portion and the second communication portion, and making the liquid flow out through the plurality of pores, a barrier 36a provided with the plurality of pores is extended in a direction intersecting a swirl axis along a center axis O2 of the swirl chamber, and circulation resistance of the pores positioned inside in a swirl radial direction intersecting the swirl axis in a plane view of the barrier among the plurality of pores is lower than circulation resistance of the pores positioned outside in the swirl radial direction.SELECTED DRAWING: Figure 2

Inventors:
UEKI SATORU
NAGASHIMA YASUYUKI
SATAKE YUKI
Application Number:
JP2017098942A
Publication Date:
December 06, 2018
Filing Date:
May 18, 2017
Export Citation:
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Assignee:
BRIDGESTONE CORP
International Classes:
F16F13/10
Attorney, Agent or Firm:
Masatake Shiga
Tadashi Takahashi
Hiroki Ninai
Makiko Otsuki