| 摘要 |
PURPOSE:To open and close a shutter correctly as well as to ensure the degree of freedom for design by using shape-remembering metal thermally changeable in its shape for an operating member of a radiator shutter constructed by arranging a number of shutter straps in parallel. CONSTITUTION:A radiator shutter 5 constructed by providing a number of shutter straps 6 vertically in parallel is arranged in front of a radiator 4. An operating link 9 is pivotted by a pin 10 on an outside frame 8 bearing each shutter strap 6 on both ends via pins 7. It is given an upward force by a return spring 11 on one end, and connected to a shutter 6a and an operating member 12 changeable in its shape respectively through rods 13 and 14 on the other end. The operating member 12 is shaped by using a shape-remembering metal which changes to mother phase structure in the higher temperature side of a transformation point and to malten-cyte structure in the lower temperature side so that the shape may be changed as illustrated for example between the high temperature time A and the low temperature time B of cooling water. |
