| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid sealed type cylindrical vibration control device, for advantageously exerting vibration control effect based on flowing operation such as resonance operation of sealed liquid against vibration in a plurality of frequency zones or a wide frequency zone, which vibration is input in an axial direction. SOLUTION: In the liquid sealed type cylindrical vibration control device, a lightening holes 66 are circumferentially and partially formed in a main body rubber elastic body 16, and wall parts of a pressure receiving chamber are constituted of the main body rubber elastic body 16, so that a part of the wall on one side in an axial direction constitutes an elastic diaphragm 72. Natural frequency of the elastic diaphragm 72 is tuned into a frequency zone higher than tuning frequency of an axial orifice 64 connecting the pressure receiving chamber 60 and an equilibrium chamber 62. Therefore, pressure fluctuation in the pressure receiving chamber 60 is absorbed by utilizing elastic deformation of the elastic diaphragm 72 when the vibration in the axial direction of the frequency zone higher than the tuning frequency of the axial orifice 64 is input, so that significantly high dynamic spring constant can be prevented. COPYRIGHT: (C)2005,JPO&NCIPI |
