Title:
防振装置
Document Type and Number:
Japanese Patent JP7349325
Kind Code:
B2
Abstract:
To attenuate and absorb midfrequency vibration.SOLUTION: In a partition member 16, there are formed an orifice channel 24 communicating a main liquid chamber 14 with a sub liquid chamber 15, a plurality of first communication holes 42a communicating the main liquid chamber with a storage chamber 42, and a second communication hole 42b communicating the sub liquid chamber with the storage chamber. In the partition member, a first wall surface 16b in which the first communication hole is opened and which constitutes a part of an inner surface of the main liquid chamber, is provided with a cylindrical member 21 protruding toward an elastic body 13 in an axial direction. The plurality of first communication holes are opened on the first wall surface both in an inner part 16f located inside the cylindrical member and in an outer part 16g located outside the cylindrical member. On the first wall surface, a passage resistance of fluid passing through the first communication hole opened in a first region X in a circumferential direction and a passage resistance of fluid passing through the first communication hole opened in a second region Y in the circumferential direction are different from each other.SELECTED DRAWING: Figure 1
Inventors:
Mikoshiba
Yuki Satake
Akira Ueki
Yuki Satake
Akira Ueki
Application Number:
JP2019202574A
Publication Date:
September 22, 2023
Filing Date:
November 07, 2019
Export Citation:
Assignee:
Prospira Co., Ltd.
International Classes:
B60K5/12; F16F13/10
Domestic Patent References:
| JP2013228004A | ||||
| JP2013032828A | ||||
| JP2010031989A | ||||
| JP2007182930A | ||||
| JP2003130125A |
Attorney, Agent or Firm:
Kenji Sugimura