| 摘要 |
PURPOSE:To obtain a highly accurate and handy temperature sensing actuator, by utilizing a shape memory alloy as thermosensitive element. CONSTITUTION:Firstly, a surface temperature sensing actuator 2 is set on the surface of an object 1 to be detected as shown by (a) and a base section 3 of the shape memory alloy element 5 is put tight on the surface of the object 1. Under such a condition, the temperature rise of the object 1 starts and when the surface temperature is above the transformation point of the shape memory alloy, the temperature of the element 5 rises above the transformation point without delay by the heat transmitted from the base section 3 so that it will return to the initial shape (A) memorized. At this point, as spiral spring as deforming force adding means 6 is elongated by return force and a display mark as a means 7 of indicating the arrival at the specified return shape will appear at a display window 10. Thus, it is possible to detect quickly and surely that the surface temperature of the object 1 reaches the temperature equivalent to the transformation of the shape memory alloy.
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