| 摘要 |
PURPOSE:To provide an air blower selector response device for cooler/heater unit that sensitively actuates in response to the temperature change by combining a shape memory alloy spring with a magnet unit. CONSTITUTION:When hot air is blown from the cooler/heater unit side under a condition where the flap 4 is closing off the hot air outlet 2, the hot air temperature is detected by the shape memory alloy spring 7 which gradually contracts itself against the spring force of a bias spring 8. In the initial stage, however, as the magnetic force of the magnetic unit 12 and magnetic part 11a is overcoming the contracting force of the shape memory alloy spring 7, the flap 4 does not rotate toward the cold air outlet 3 but is still closing off the hot air outlet 2. When the shape memory alloy spring 7 further contracts itself to overcome the magnetic force of the magnet unit 12a and magnetic part 11a, the flap 4 is at last subjected to a rotational force and sensitively rotates toward the cold air outlet 3, opening the hot air outlet 2 and closing the cold air outlet by means of the attraction of the magnetic unit 12b.
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