| 摘要 |
PURPOSE:To suppress the increase of the number of parts and prevent the freezing of a damper, rod, etc. and generation of mechanical loss when the damper is opened and closed, by using shape memory alloy. CONSTITUTION:Through the variation of a shape memory alloy 7, the position of a ventilation hole 12 in a damper part 14 is shifted by the operation of the damper part 14 having a projecting strip 15, in the engagement with the slidable grooves 13 of a plate 11, having a damper rotary shaft 16 as fulcrum, and controls the opening area of the ventilation hole 12 on the plate 11. Since the necessity of a bellows and coolant is ovbiated, a correct transmission force can be secured, and the number of parts can be reduced. Since the damper part 14 shifts, smooth opening and closing of the ventilation hole 12 is permitted, and since the damper part 14 and the plate 11 are closely attached, freezing is not generated at the contact part between the both. |
