Title:
防振装置
Document Type and Number:
Japanese Patent JP6978982
Kind Code:
B2
Abstract:
To differentiate an attenuation force generated at an input of a bound load, and an attenuation force generated at an input of a rebound load.SOLUTION: A partitioning member 17 comprises a membrane 31, an intermediate liquid chamber 35, a first orifice passage 21, a second orifice passage 22 and a gripping member 39. The first orifice passage comprises a main liquid chamber side passage 21a located at a main liquid chamber side, and an intermediate liquid chamber side passage 21b located at the intermediate liquid chamber side. Either of the main liquid chamber side passage and the intermediate liquid chamber side passage is lower than the other passage in the circulation resistance of liquid, and the gripping part comprises a first gripping part 25 for supporting the membrane from one liquid chamber side located at one passage side in a circulation direction of the liquid in the first orifice passage out of the main liquid chamber and the intermediate liquid chamber, and a second gripping part 38 for supporting the membrane from the other liquid chamber side located at the other passage side in the circulation direction of the liquid in the first orifice passage. The first gripping part protrudes to the inside of a radial direction longer than the second gripping part.SELECTED DRAWING: Figure 1
Inventors:
Hiroshi Kojima
Application Number:
JP2018113064A
Publication Date:
December 08, 2021
Filing Date:
June 13, 2018
Export Citation:
Assignee:
Bridgestone Corporation
International Classes:
F16F13/10
Domestic Patent References:
| JP2009103223A | ||||
| JP2012107763A | ||||
| JP59231233A | ||||
| JP2007085523A |
Attorney, Agent or Firm:
Sumio Tanai
Nishizawa Kazumi
Hiroki Ninai
Makiko Otsuki
Nishizawa Kazumi
Hiroki Ninai
Makiko Otsuki