| 摘要 |
PURPOSE:To maximize the length of a partition wall by which liquid chambers are separated, and to reduce the stresses acting thereon, by providing, in a movable valve, an orifice through which the liquid chambers of a liquid-sealed type elastic bushing used for an engine mount or the like are communicated. CONSTITUTION:A metallic inner cylinder 1 and an outer cylinder 2 are arranged in parallel, and a sleeve-shaped rubber elastic body 3 is integrally molded between them so as to constitute a liquid-sealed type elastic bushing by partitioning two liquid chambers 5 in which a liquid 4 is filled, by means of a side wall 6 and a partition wall 7. Next, a communicating hole 10 is formed in the partition wall 7, and a movable valve 11 of an I-shaped cross-section is provided therein, and further an orifice 12 communicating both liquid chambers 5 at all times is formed in the valve 11. Since it is not necessary to provide the orifice 12 separately, the length of the partition wall 7 can be maximized, and the stresses due to the repeated load acting on the partition wall 7 through the vibration of the inner cylinder 1 can be reduced. |
