| 摘要 |
PROBLEM TO BE SOLVED: To enhance durability and to reduce a cost. SOLUTION: An intermediate cylinder 22 and an intermediate block 24 are disposed inside an outer cylinder bracket 16, and a space partitioned by the intermediate block 24 and an elastic body 28 composes a main liquid chamber 30. The main liquid chamber 30 is brought into communication with a first auxiliary liquid chamber 32 by a shake orifice 64 and an idle orifice 60. A sealing material 44 to prevent liquid from leaking out is vulcanized and bonded to the outer circumference of a shaft 36B composing a valve 36 together with a valve element 36A to open and close the idle orifice 60. A solenoid 70 is provided outside a bracket 12 to cover the outer cylinder bracket 16, and the upper end of a plunger 70A protruding from the solenoid 70 is engaged with the lower end side of the shaft 36B. A spring material 78 to energize the valve 36 downward is disposed on the lower end side of the plunger 70. |
