LIQUID-SEALED ANTIVIBRATION DEVICE

摘要

[Problem] To provide a liquid-sealed antivibration device capable of improving the position accuracy of an outer fitting member and a diaphragm.;[Solution] Since a cylindrical outer fitting member 11 with an outer edge part of a diaphragm 10 connected thereto is externally fitted on a partition member 20 at an area on an inner peripheral surface of the outer fitting member 11 where the diaphragm 10 is not connected, that is, since the diaphragm 10 is not interposed between the partition member 20 and the outer fitting member 11, the position relation of the outer fitting member 11 to the partition member 20 can be stabilized, so that the outer fitting member 11 can be restrained from inclining relative to the partition member 20.

主权项

1. A liquid-sealed antivibration device comprising a first attaching member, a cylindrical second attaching member, an antivibration base body connecting the first attaching member and the second attaching member and constituted by a rubber-like elastic body, a diaphragm defining a liquid-sealed chamber between itself and the antivibration base body and constituted by a rubber-like elastic body, a partition member dividing the liquid-sealed chamber into a first chamber on the antivibration base body side and a second chamber on the diaphragm side, and an orifice making communication between the first chamber and the second chamber, wherein:
there is provided a cylindrical outer fitting member with an outer edge part of the diaphragm connected to the cylindrical outer fitting member; the outer fitting member is externally fitted on the partition member at an area on an inner peripheral surface of the outer fitting member where the diaphragm is not connected; the partition member is provided with a protruding portion which protrudes radially outward from an outer peripheral surface and with which an axial end surface of the externally fitted outer fitting member is brought into contact; and the second attaching member is subjected to a diameter reduction process with the outer fitting member externally fitted on the partition member.