Title:
VIBRATION ISOLATION DEVICE
Document Type and Number:
Japanese Patent JP2018194100
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 main liquid chamber 14, a second communication portion 27 opened to an auxiliary liquid chamber 15, and a main body flow channel 25 for communicating them. The first communication portion 26 includes a plurality of pores 31 penetrating through a first barrier 28 having a surface 28a facing the main liquid chamber 14, each of opening peripheral edge portions of the pores 31 on the surface 28a is provided with a projecting portion 40 projecting toward the main liquid chamber 14 or the auxiliary liquid chamber 15 over the whole periphery, and an inner peripheral face of the projecting portion 40 has the shape similar to the inner peripheral face of the pore 31 in a plane view observed from a pore axial direction along a center axis of the pore 31.SELECTED DRAWING: Figure 1
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Inventors:
UEKI SATORU
NAGASHIMA YASUYUKI
SATAKE YUKI
NAGASHIMA YASUYUKI
SATAKE YUKI
Application Number:
JP2017098940A
Publication Date:
December 06, 2018
Filing Date:
May 18, 2017
Export Citation:
Assignee:
BRIDGESTONE CORP
International Classes:
F16F13/10; B60K5/12
Domestic Patent References:
| JP2016176509A | 2016-10-06 | |||
| JP2009275910A | 2009-11-26 |
Attorney, Agent or Firm:
Masatake Shiga
Tadashi Takahashi
Hiroki Ninai
Makiko Otsuki
Tadashi Takahashi
Hiroki Ninai
Makiko Otsuki