| 摘要 |
PROBLEM TO BE SOLVED: To provide a fluid sealed type vibration damper having a novel structure capable of reducing or avoiding the occurrence of noise and vibration which is a problem upon inputting a shocking vibration load while effectively realizing a target vibration damping effect based on flowing action of a fluid during normal vibration input. SOLUTION: A movable rubber membrane 64 is assembled to a partitioning member 44. A liquid pressure absorbing mechanism is composed for absorbing pressure fluctuation of a pressure receiving chamber 78 by exerting pressure of the pressure receiving chamber 78 and an equilibration chamber 80 on each face of the movable rubber membrane. A projection part 68 projecting toward the pressure receiving chamber 78 side is formed at a central part of the movable rubber membrane 64. A short-circuiting slot 72 is formed that penetrates the movable rubber membrane 64 at the portion where the projection part 68 is formed, and the short-circuiting slot 72 is held in a closed state based on elasticity of the movable rubber membrane 64. A valve mechanism that becomes communicated by the movable rubber membrane 64 being elastically deformed toward the pressure receiving chamber 78 side during input of vibration is composed of the projection part 68. COPYRIGHT: (C)2009,JPO&INPIT |
