| 摘要 |
PURPOSE: To provide favorable vibration proof effect against various input condition of vibration. CONSTITUTION: A supporting elastic body 3 is interposed between an outer cylinder 1 and an inner cylinder 2 coaxially inserted into the center part inside the outer cylinder 1, and spaces 4U, 4L are formed on the upper side and the lower side of the supporting elastic body 3 in the load supporting direction. A hollow bellows-like rubber elastic body 5 of which the expansible direction is directed in the load supporting direction is fixed on the outer cylinder 1 side and arranged in the upper side space 4U, and the natural length is set so that it is spaced from the upper part of the supporting elastic body 3 by a little distance so as to be non-contact in the condition of being applied by a fixed partial load. A wire 8 is wound in the bellows-like groove of the rubber elastic body 5, and a first fluid chamber 11 is defined inside the rubber elastic body 5. This first fluid chamber 11 is communicated to a second fluid chamber 12 defined by a thin film rubber elastic body-like diaphragm 10 through an orifice 9, and fluid such as oil is enclosed in the first fluid chamber 11, the second fluid chamber 12, and the orifice 9. |
