| 摘要 |
PROBLEM TO BE SOLVED: To provide a vibro-isolating support device which prevents the contact of a diaphragm with an air hole so as to stabilize vibration control performance when the diaphragm composing an auxiliary fluid chamber is extended. SOLUTION: When the movement of a large amount of fluid occurs from a main fluid chamber 66 to an auxiliary fluid chamber 67 through an orifice 68 by an excessive volumetric fluctuation of the main fluid chamber 66, there is a case that a diaphragm 42 formed in an annular space between a second cylindrical member 34 and the small diametral part 36c of a first cylindrical member 36 is largely expanded so as to be stuck to the inner surface of a device case 43. At that time, air in a diaphragm air chamber 42c sectioned in the rear surface of the diaphragm 42 is released to the atmosphere through a recessed part 45a sectioned between the second cylindrical member 34 and the fitting surface of the device case 43 and the air hole 43b of the device case 43, which is passed through toward this recessed part 45a. Here, the air hole 43b of the device case 43 is arranged in a position with which the diaphragm 42 may not be brought into contact by being expanded, thereby the damage of the diaphragm 42 due to the contact with the opening edge part of the air hole 43b can be prevented. |
