Liquid-sealed vibration-proof device

A liquid-sealed vibration-proof device including a vibration-proof comprising:

• a vibration-proof base;
• a first diaphragm, and a liquid chamber formed between the vibration-proof base and the first diaphragm;
• and
• a partition dividing the liquid chamber into a main liquid chamber and a subsidiary liquid chamber, wherein:
• the partition is provided with an orifice member having an orifice channel at a peripheral side thereof and a central opening at a center portion of the orifice member, a partition plate member crimped and fixed beneath the orifice member such that an outer periphery of an upper end of the orifice member contacts an outer peripheral end of the vibration-proof base on an liquid chamber side of the vibration-proof base, and a second diaphragm closing the central opening of the orifice member;
• the second diaphragm is formed as a separate body from the orifice member and has a recessed groove at marginal part, and the orifice member has a hook portion projecting inwardly so that the recessed groove is engaged with the hook portion;
• the recessed groove has a bottom wall pinched and clamped between the hook portion and the partition plate member;
• and
• the partition plate member has, at central opening wall thereof, of a support cylinder bent axially, and a whole inner periphery of the marginal part of the second diaphragm is press-fitted in the support cylinder.