Title:
FLUID-FILLED VIBRATION-DAMPING DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/039648
Kind Code:
A1
Abstract:
Provided is a fluid-filled vibration-damping device that has a novel structure and can alleviate or prevent problems such as abnormal noises or vibrations caused by collisions with a partition member of a movable plate. This fluid-filled vibration-damping device 10 comprises a liquid pressure absorbing mechanism 60 configured by applying the liquid pressure in a primary liquid chamber 44 and a secondary liquid chamber 46 to one surface and the other surface, respectively, of the movable plate 54 which is supported, so as to be movable in the plate thickness direction, by a partition member 38 provided between the primary liquid chamber 44 and the secondary liquid chamber 46. Communication holes 56 and 58 open to movable plate 54-facing surfaces of the partition member 38 are provided, and elastic protrusions 84 protruding toward the communication holes 56 and 58 are provided on the movable plate 54. The elastic protrusions 84 are provided with circumferential wall parts 86 which are pressed in the compression direction and the shear direction, and thereby also elastically deformed toward the inner circumferences of the communication holes 56 and 58, as the movable plate 54 moves in the plate thickness direction and comes into contact with porous wall portions of the communication holes 56 and 58.
Inventors:
ISHIKAWA RYOTA (JP)
Application Number:
PCT/JP2019/016521
Publication Date:
February 27, 2020
Filing Date:
April 17, 2019
Export Citation:
Assignee:
SUMITOMO RIKO CO LTD (JP)
International Classes:
B60K5/12; F16F13/10
Foreign References:
| JP2002070929A | 2002-03-08 | |||
| JP2002295571A | 2002-10-09 | |||
| JPS61129946U | 1986-08-14 | |||
| JP2006097824A | 2006-04-13 | |||
| JP2008267453A | 2008-11-06 | |||
| JP2006207629A | 2006-08-10 |
Attorney, Agent or Firm:
KASAI & NAKANE INTERNATIONAL PATENT FIRM et al. (JP)
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