| 摘要 |
PROBLEM TO BE SOLVED: To provide liquid seal type vibration isolation equipment capable of improving size precision of an orifice for shake vibration, decreasing unevenness in characteristics, decreasing a dynamic spring constant at a high frequency area, and being excellent in an effect to reduce the generation of noise, such as booming noise. SOLUTION: A cylindrical body fitment 1 and a boss fitment 2 are intercoupled through a vibration control base body 3. A diaphragm 4 is situated at an upper end part, a main liquid chamber 6 and a first auxiliary liquid chamber 7, which are partitioned from each other by a partition part 10, are brought into intercommunication therebetween and the partition part 10 consists of a partition plate member 11 having an elastic film 12 and an orifice member 13. A first orifice 8 consists of an orifice member, the outer peripheral part of a partition plate member, and a cylindrical rubber part 4a communicating with the diaphragm. A space surrounded by a central plate part 13a of the orifice member and the elastic film 12 forms a second auxiliary liquid chamber 15. An opening serving as a second orifice 16 for booming noise communicating with the second auxiliary liquid chamber 15 through the first auxiliary liquid chamber 7 is formed in a central plate part 13a of the orifice member. |
