| 摘要 |
PROBLEM TO BE SOLVED: To simply change the vibration characteristic of a vibrationproof supporting device. SOLUTION: A rubber layer 24 is provided on the undersurface of a fixing frame 21, and the bottom of the layer 24 is joined with the top of a casing 31, and a tightly closed space is formed between the rubber layer 24 and casing 31. A diapgragm 33 and partitioning plates 34 and 35 are provided between the rubber layer 24 and casing 31, and the closed space is partitioned into a gas chamber R1, a first and a second oil chamber R1, R2. The partitioning plates 34 and 35 are furnished with small holes 34a and 35a to form an orifice, and a spring 36 is interposed between the diaphragm 33 and the bottom surface of the casing 31. The frame 21 and casing 31 are fixed to an object vibrating or a support therefor, and the object is supported resiliently and a damping force is given thereto which is vibrating. The vibration characteristic of this vibrationproof supporting device can be changed simply to various patterns only through properly selecting the spring constant of the spring 36. |
