| 摘要 |
PROBLEM TO BE SOLVED: To curtail the number of part items and make an assembling work easy by arranging the inner circumferential part of a diaphragm oppositely to an idle orifice through an inner circumference supporting ring fitted to the face on the opposite side to a liquid chamber on a partition wall. SOLUTION: In a diaphragm 7, when large displacement due to a shock is input to the main body part 7b surrounding a liquid chamber B on the outer circumferential side of a fitting part to the engaging step difference part 83 of an idle orifice D through an inner circumference supporting ring 72, sealed liquid L moves through a shock orifice C. Meanwhile, the inner circumferential part 7c facing to a liquid chamber A through the orifice D allows liquid column resonance at inputting vibration of small amplitude due to idling. Apart from a main body vulcanized molding constituted of an outer cylinder 1, a center boss 4, and an elastic body, three members, namely, a partition wall 8, the diaphragm 7, and a cup member 2 are temporarily assembled, and after excluding air from the respective inner spaces in a liquid tank, the sealed liquid L is enclosed and both are combined together. Hereby, a caulking work outside the tank is facilitated, and hence air extraction and liquid charge can be surely performed. |
