Title:
FLUID SEALED VIBRATION CONTROL DEVICE
Document Type and Number:
Japanese Patent JP3721856
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To realize a fluid sealed vibration control device capable of displaying excellent vibration controlling characteristics over a wide frequency area.
SOLUTION: A second orifice passage 72 turned in to a medium frequency area comprises a pair of branched channels 58 which extend along the outer peripheral part of a partition member 40 over about the half of a periphery. The one end parts of these branched channels 58 are allowed to open in the pressure receiving chamber 48 side, while the other end parts of these branched channels 58 are joined to each other to be extended inwardly in radial direction, and thus the branched channels are positioned in about the center of the partition member 40 to be open in the balancing chamber 50 side. By displacing a diaphragm 42 constituting the wall part of the balancing chamber 50 by means of an actuator 92 to open and close the opening part on the balancing chamber 50 side of the second orifice passage 72 provided in about the center of the partition member 40, the second orifice passage 72 is communicated with the balancing/chamber or shut off from it.
Inventors:
Tatsuya Suzuki
Application Number:
JP15553799A
Publication Date:
November 30, 2005
Filing Date:
June 02, 1999
Export Citation:
Assignee:
Tokai Rubber Industry Co., Ltd.
International Classes:
F16F13/06; F16F13/26; (IPC1-7): F16F13/26; F16F13/06
Domestic Patent References:
| JP7310778A | ||||
| JP10281214A | ||||
| JP8326830A | ||||
| JP4248487A |
Attorney, Agent or Firm:
Yoshitaka Kasai
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