| 摘要 |
PURPOSE:To omit mechanical sliding parts and to provide a clean holding device that does not yield dust, by providing shape memorizing alloy parts between holding bodies and a holding base part, conducting currents to said shape memorizing alloy parts, thereby opening and closing the holding bodies. CONSTITUTION:Holding bodies 2a and 2b are elastically held by elastic bodies 3a and 3b to a base part 1. Elastic forces are applied in the direction the holding bodies 2a and 2b are opened by the elastic bodies 3a and 3b. The end parts of shape memorizing alloy parts 4a and 4b in coil forms are connected to fixing parts 5a and 5b of the base part 1 and fixing parts 6a and 6b of the holding bodies 2a and 2b. Meanwhile, the end parts of the elastic bodies 3a and 3b on the side of the base part 1 and the end parts of the shape memorizing alloy parts 4a and 4b are connected to a current conducting means 10 through conductor wires 8a, 8b, 9a and 9b. When the currents are conducted through the shape memorizing parts 4a and 4b, the temperature of the coil-shaped shape- memorizing alloy parts 4a and 4b is increased by Joule heat and contracted by the shape memory effect. Thus the holding bodies 2a and 2b are closed. |
