| 摘要 |
PROBLEM TO BE SOLVED: To provide a vibration isolation apparatus excellent in durability, vibration isolation effect, and productivity, capable of obtaining a stable vibration isolation characteristic, and avoiding fatigue and damage of an elastic material layer of an elastic body and a columnar lead member. SOLUTION: The vibration isolating apparatus 5 includes: the elastic body 3 in which the elastic material layers and rigid material layers are alternately superposed one on top of another; and the columnar lead member 4 which is disposed in a hollow portion 12 defined by an inner peripheral surface 9 of the elastic body 3, wherein a ratio ap/Ar between the a gross area ap of a sheared surface of the columnar lead member 4 and an area Ar of a load surface of the elastic body 3 is 0.10 to 0.12, and the ratio Vp/Ve between a volume Vp of the columnar lead member 4 disposed in the hollow portion 12 and a capacity Ve of the hollow portion 12 in a state in which the columnar lead member 4 is not inserted and a load is applied to the elastic body 3 is 1.02 to 1.12. COPYRIGHT: (C)2007,JPO&INPIT |
