LIQUID SEALING TYPE VIBRATION CONTROL DEVICE AND METHOD OF MANUFACTURING THE SAME

• Main Authors: NAKATA MITSUHARU, MIYAKE MASAHIRO, FUJIKI SOHEI, TAKEMOTO HIROTAKA
• Format: Patent
• Language: English
• Published: 16.09.2010
• Subjects: BLASTING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MEANS FOR DAMPING VIBRATION; MECHANICAL ENGINEERING; SHOCK-ABSORBERS; SPRINGS; THERMAL INSULATION IN GENERAL; WEAPONS

PROBLEM TO BE SOLVED: To provide a liquid sealing type vibration control device effectively absorbing vibrations of not only a low frequency area but also a middle frequency area, saving cost, and having high reliability. SOLUTION: In the liquid sealing type vibration control device 1 wherein a first metallic member 2 and a second metallic member 4 are connected through an elastic member 7, a liquid chamber is constituted by a pressure receiving chamber 8, a first equilibrium chamber 9, and at least one second equilibrium chamber 10. The pressure receiving chamber 8 and the first equilibrium chamber 9 are separated from each other by a partitioning member 11, and communicated by a first orifice 12 which is a damping flow passage detouring the partitioning member 11. The pressure receiving chamber 8 and the second equilibrium chamber 10 are communicated by a second orifice 14, and the second equilibrium chamber 10 and the second orifice 14 are integrally molded by the elastic member 7. The maximum cross-sectional area (S1) in the second equilibrium chamber 10 is larger than the minimum cross-sectional area (S0) of the second orifice 14. A thin-wall portion 15 is provided on a part of a wall of the second equilibrium chamber 10, and the volume of the second equilibrium chamber 10 can be increased. COPYRIGHT: (C)2010,JPO&INPIT