To suppress propagation of input vibration to a vibration receiving portion over a wide frequency range.SOLUTION: A liquid seal bush includes an outer member 11, an inner member 12, and an elastic body 14 connecting the outer member and the inner member, two liquid chambers 13a, 13b, a connection passage 15 connecting two liquid chambers to each other and extended in one direction, a first communication passage 16 communicating one end portion positioned at one of liquid chamber sides of two liquid chambers of both end portions of the connection passage and the other liquid chamber, a second communication passage 17 communicating the other end portion positioned at the other liquid chamber side of both end portions of the connection passage and one of the liquid chambers, and a linear motor 18 are disposed inside of the outer member, and the linear motor includes a movable element 19 disposed in the connection passage movably in one direction, closing both of openings 16a, 17a of the first communication passage and the second communication passage in the connection passage, and capable of independently opening each of the openings in accompany with the movement in one direction, and a coil 20 surrounding the movable element.SELECTED DRAWING: Figure 1
【課題】入力振動が振動受部に伝播するのを、幅広い周波数範囲にわたって抑える。【解決手段】外側部材11、および内側部材12と、外側部材と内側部材とを連結した弾性体14と、を備え、外側部材の内側に、2つの液室13a、13bと、2つの液室同士を接続し、一方向に延びる接続路15と、接続路の両端部のうち、2つの液室のうちの一方の液室側に位置する一端部と、他方の液室と、を連通する第1連通路16と、接続路の両端部のうち、他方の液室側に位置する他端部と、一方の液室と、を連通する第2連通路17と、リニアモータ18と、が設けられ、リニアモータは、接続路に一方向に移動可能に設けられ、接続路における第1連通路、および第2連通路の各開口16a、17aを双方ともに閉塞するとともに、一方向に沿う移動に伴い、前記各開口を各別に開放可能な可動子19と、可動子を囲うコイル20と、を備える。【選択図】図1
LIQUID SEAL BUSH
液封ブッシュ
2020-11-19
Patent
Electronic Resource
Japanese