Title:
防振装置
Document Type and Number:
Japanese Patent JP6836909
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a vibration-proofing device which can suppress high spring properties at the time of inputting vibration while achieving high damping performance.SOLUTION: A vibration-proofing device includes: a cylindrical outer attachment member 11; an inner attachment member 12; a pair of first body rubbers 13 connecting the outer attachment member 11 with the inner attachment member 12 and being spaced apart from each other in an axial direction; a partition member 16 which partitions a liquid chamber 30 between the pair of first body rubbers 13 into a first liquid chamber 31 and a second liquid chamber 32 in the axial direction; a second body rubber 14 which divides the first liquid chamber 31 into a first pressure receiving liquid chamber 41 and a second pressure receiving liquid chamber 42; and a third body rubber 15 which divides the second liquid chamber 32 into a third pressure receiving liquid chamber 43 and a fourth pressure receiving liquid chamber 44. The partition member 16 is formed with a first restriction passage 51 which allows communication between the first pressure receiving liquid chamber 41 and the fourth pressure receiving liquid chamber 44 and a second restriction passage 52 which allows communication between the second pressure receiving liquid chamber 42 and the third pressure receiving liquid chamber 43. Circulation resistance of the first restriction passage 51 and circulation resistance of the second restriction passage 52 are different from each other.SELECTED DRAWING: Figure 1
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Inventors:
Hiroshi Kojima
Application Number:
JP2017003040A
Publication Date:
March 03, 2021
Filing Date:
January 12, 2017
Export Citation:
Assignee:
Bridgestone Corporation
International Classes:
F16F13/14; B60K5/12
Domestic Patent References:
| JP8004824A | ||||
| JP7238982A | ||||
| JP62224744A | ||||
| JP2007527488A | ||||
| JP2007526971A | ||||
| JP2006292106A | ||||
| JP2017044221A | ||||
| JP2017044220A |
Attorney, Agent or Firm:
Sumio Tanai
Nishizawa Kazumi
Hiroki Ninai
Makiko Otsuki
Masatake Shiga
Tadashi Takahashi
Nishizawa Kazumi
Hiroki Ninai
Makiko Otsuki
Masatake Shiga
Tadashi Takahashi