- 专利标题: Fluid-filled vibration damping device having pressure receiving chamber whose spring stiffness is controllable
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申请号: US09877274申请日: 2001-06-07
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公开(公告)号: US06491290B2公开(公告)日: 2002-12-10
- 发明人: Atsushi Muramatsu , Kazuhiko Kato , Motohiro Hatano
- 申请人: Atsushi Muramatsu , Kazuhiko Kato , Motohiro Hatano
- 优先权: JP2000-214108 20000714
- 主分类号: F16F1300
- IPC分类号: F16F1300
摘要:
A fluid-filled vibration damping device wherein two mutually spaced-apart mounting members are connected by an elastic body, which cooperate with an elastic wall member to partially define a pressure-receiving chamber, and a flexible diaphragm partially defines an equilibrium chamber on one side and a working air chamber on the other side. These chambers are filled with the non-compressible fluid and held in fluid communication with each other through the orifice passage. A negative pressure-regulating device applies different negative pressure to the working air chamber depending upon frequencies of vibration to be damped, so that a spring constant of the elastic wall member is changed corresponding to the vibration to be damped, thereby controlling a damping characteristics of the damping device.
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