Patent ID: 8181946

Claim:
A liquid enclosing type vibration isolating apparatus comprising: a first attaching piece to be attached to one of a vibration source side and a support side; a second attaching piece to be attached to other of the vibration source side and the support side; a vibration isolating base member comprising an elastic member interposed between the first attaching piece and the second attaching piece; a first diaphragm comprising an elastic member; a main liquid chamber a portion of a chamber wall of which is constituted by the vibration isolating base member and which is filled with a liquid; an auxiliary liquid chamber a portion of a chamber wall of which is constituted by the first diaphragm and which is filled with the liquid; and an orifice member forming an orifice path of communicating the main liquid chamber and the auxiliary liquid chamber by a main liquid chamber side opening opened to the main liquid chamber and an auxiliary liquid chamber side opening opened to the auxiliary liquid chamber; wherein the orifice member includes a partition wall for partitioning the orifice path and the main liquid chamber or the auxiliary liquid chamber, and the partition wall at a portion of the orifice path between the main liquid chamber side opening and the auxiliary liquid chamber side opening is constituted by a second diaphragm comprising a flexible elastic film facing the main liquid chamber or the auxiliary liquid chamber, wherein the second diaphragm partitions the orifice path and the main liquid chamber or the auxiliary liquid chamber; wherein the partition wall at a portion of the orifice path is provided with an opening portion opened to the main liquid chamber or the auxiliary liquid chamber, and wherein the second diaphragm is formed by fixing the flexible elastic film over the whole periphery of the opening portion so as to close the opening portion.