| 摘要 |
PURPOSE:To easily enable switching control of vibration damping characteristics by attempting facilitation of assembly through a process of simplifying the structure of a communicating passage wherein the fluid state of electric viscous fluid can be changed by appllcation of voltage and the structure a communicating passage wherein the fluid state is not changed even if voltage is applied. CONSTITUTION:First and second supporting bodies 1, 2 arranged apart from each other in the vibration input direction are connected to each other by an elastic supporting body 3, and a liquid chamber 5 in which electric viscous fluid E between the elastic supporting body and an elastic diaphragm 4 is sealed is divided into a pressure receiving chamber 5a and a balance chamber 5b by a partition body 6. The partition body is composed of a pair of electrode plates 10, 11 and an insulating member 12 interposed between facing surfaces of both electrode plates, and sectioned into a first communicating passage 13 and a second communicating passage 14 by the insulating member. The distance between upper and lower parts of the second communicating passage is so set that electric field strength to be formed between both electrode plates by applying voltage to a pair of electrode plates may not exceed 1kv/mm, so as to prevent viscosity of electric viscous fluid from being substantially changed even if voltage is applied. |
