To provide a liquid-sealed type vibration control device capable of suppressing high dynamic spring motion caused by vibration in a high frequency area in a blocked state of a second orifice.SOLUTION: A liquid-sealed type vibration control device includes: a second orifice which has an opening opened to a second liquid chamber side of a partition body and confronting a diaphragm in an axial direction of a second mounting tool, and which communicates a first liquid chamber with the second liquid chamber; and an actuator which is fixed to the second mounting tool and opens and closes the second orifice. The actuator includes a movable element which has an annular protrusion protruding from an end and which is arranged on a side opposite from the liquid chamber while having the diaphragm therebetween, and a stator which moves the movable element in the axial direction so as to switch between a first state in which the opening is closed by pressing the protrusion to the diaphragm and a second state in which pressing by the protrusion is released.SELECTED DRAWING: Figure 1
【課題】第2オリフィスの遮断状態での高周波域の振動による高動ばね化を抑制できる液封入式防振装置を提供すること。【解決手段】仕切体の第2液室側に開口してダイヤフラムと第2取付具の軸方向に対向する開口部を有する、第1液室と第2液室とを連通する第2オリフィスと、第2取付具に対して固定されて第2オリフィスを開閉するアクチュエータとを備え、アクチュエータは、先端から突出する環状の突起部を有してダイヤフラムを挟んで液室と反対側に配置される可動子と、可動子を軸方向に移動させることで、突起部をダイヤフラムに押し付けて開口部を塞ぐ第1状態と、突起部による押し付けを解除する第2状態とを切り替える固定子とを備える。【選択図】図1
LIQUID-SEALED TYPE VIBRATION CONTROL DEVICE
液封入式防振装置
2018-12-13
Patent
Elektronische Ressource
Japanisch