| 摘要 |
PROBLEM TO BE SOLVED: To reduce the wall thickness of a part of partition member where a high dimensional accuracy is required and suppress drop of the strength of the partition member to be caused by reduced wall thickness. SOLUTION: A partition member 50 installed in a vibration isolating device 40 partitions a liquid chamber 49 into a main liquid chamber 51 and aux. liquid chamber 52, which are put in mutual communication via a restricting passage 65. The partition member 50 is composed of a disc-shaped membrane rubber 55 and a ring-shaped partition periphery 54. The periphery 54 is formed from a resin through injection molding using a die, and inside the partition periphery 54, a tube-form hollow chamber 66 is formed along the peripheral surface in tight attachment to the inside surface of the liquid chamber 49. That part of the hollow chamber 66 which is positioned along the peripheral surface of the partition periphery 54 is formed with a reduced wall thickness, which prevents the accuracy of the outside diameter of the partition periphery 54 from degradation caused by shrinkage when the resin solidifies. |
