Liquid-sealed vibration isolation device and vibration isolation unit

摘要

A liquid-sealed vibration isolation device including: a cylindrical outer tube member; a boss member; a vibration isolation base body ; a diaphragm; a partition member; an orifice; a decompressing-cum-pouring hole allowing the liquid-sealed chamber to communicate with the outside; and a sealer sealing the decompressing-cum-pouring hole. In the liquid-sealed vibration isolation device, an annular attaching member is provided to which the diaphragm is vulcanizingly adhered on the inner peripheral side and which is formed into an annular shape when viewed in the axial direction and attached to the upper end side of the outer tube member, and the decompressing-cum-pouring hole is disposed in the annular attaching member.

主权项

1. A liquid-sealed vibration isolation device comprising:
a cylindrical outer tube member; a boss member positioned on the lower end side of the outer tube member; a vibration isolation base body connecting the boss member and the outer tube member to each other and formed of a rubber-like elastic body; a diaphragm attached on the upper end side of the outer tube member, forming a liquid-sealed chamber between the vibration isolation base body and the diaphragm and formed of a rubber-like elastic body; a partition member partitioning the liquid-sealed chamber into a first liquid chamber on the vibration isolation base body side and a second liquid chamber on the diaphragm side; an orifice allowing the first liquid chamber and the second liquid chamber to communicate with each other; a decompressing-cum-pouring hole allowing the liquid-sealed chamber to communicate with outside of the liquid-sealed chamber; and a sealer sealing the decompressing-cum-pouring hole; whereby the liquid-sealed chamber is filled with liquid by pouring the liquid through the decompressing-cum-pouring hole after decompressing inside of the liquid-sealed chamber through the decompressing-cum-pouring hole, and the decompressing-cum-pouring hole is sealed by the sealer; wherein an annular attaching member is provided to which the diaphragm is vulcanizingly adhered on an inner peripheral side of the annular attaching member and which is formed into an annular shape, when viewed in an axial direction of said cylindrical outer tube member, and attached to the upper end side of the outer tube member, and the decompressing-cum-pouring hole is disposed in the annular attaching member.