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Patent Searching and Data


Title:
VIBRATION DAMPING DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/211754
Kind Code:
A1
Abstract:
This limiting passage (24) is provided with: a first communication section (26) open to a first liquid chamber; a second communication section (27) open to a second liquid chamber; and a body flow passage (25) for providing communication between the first communication section and the second communication section. The first communication section and/or the second communication section is provided with a plurality of fine holes (31). The portion of the body flow passage, which is connected to the first communication section and/or the second communication section, has disposed therein a swirl chamber (25b), the swirl chamber (25b) forming the swirl flow of liquid according to the speed of flow of liquid flowing from the first communication section or the second communication section which is not connected to the portion of the body flow passage, thereby causing the liquid of the swirl flow to flow out through the fine holes. A barrier wall (36a) in which the plurality of fine holes are formed extends in a direction intersecting a swirl axis extending along the center axis (O2) of the swirl chamber. Among the plurality of fine holes, fine holes located on the inner side in a swirl radial direction which intersects the swirl axis in a plan view of the barrier wall have flow resistance smaller than that of fine holes located on the outer side in the swirl radial direction.

Inventors:
UEKI Akira (1-1 Kyobashi 3-chome, Chuo-k, Tokyo 40, 〒1048340, JP)
NAGASHIMA Yasuyuki (1-1 Kyobashi 3-chome, Chuo-k, Tokyo 40, 〒1048340, JP)
SATAKE Yuki (1-1 Kyobashi 3-chome, Chuo-k, Tokyo 40, 〒1048340, JP)
Application Number:
JP2018/004388
Publication Date:
November 22, 2018
Filing Date:
February 08, 2018
Export Citation:
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Assignee:
BRIDGESTONE CORPORATION (1-1 Kyobashi 3-chome, Chuo-ku Tokyo, 40, 〒1048340, JP)
International Classes:
F16F13/10
Domestic Patent References:
WO2016027606A12016-02-25
WO2014196284A12014-12-11
Foreign References:
JP2012026510A2012-02-09
JPS63308245A1988-12-15
JP2017098942A2017-06-01
JP2012172832A2012-09-10
Attorney, Agent or Firm:
TANAI Sumio et al. (1-9-2, Marunouchi Chiyoda-k, Tokyo 20, 〒1006620, JP)
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