| 摘要 |
PROBLEM TO BE SOLVED: To provide a vibration damper capable of absorbing low frequency vibration by a simple and low cost structure in a liquid seal type vibration damper. SOLUTION: A diaphragm 5 forming a liquid chamber F1 in an elastic bearing member 4 is formed of a thin-walled center part 5a and a thick-walled outer peripheral part 5b. A projected part 5c of roughly ring-shape in plan view projected to the inside of the liquid chamber F1 is formed between the outer peripheral part 5b and the inner peripheral side, i.e., the center part 5a. In this constitution, when the low frequency vibration is input, the center part 5a of the diaphragm 5 is relatively largely deformed by a variation in liquid pressure produced in the liquid chamber F1 to produce a flow in a damping liquid. An input vibration can be damped by a flow resistance caused by the flow of the damping liquid. COPYRIGHT: (C)2007,JPO&INPIT |
