| 摘要 |
PURPOSE:To surely close a damper, by disconnecting a limiter pattern, with which a brush of a motor comes into slide contact, in the vicinity of positions of maximum room cooling and maximum room heating and connecting the limiter pattern interposing a resistor, in case of the captioned servomotor for an automobile air conditioning device. CONSTITUTION:Since a position, in which an air mixing damper 4 is closed to its maximum room cooling or room heating position, agrees with positions of stop patterns 64, 65, a brush 63 comes to the right end position of a limiter pattern 61 when the damper 4 is closed to the maximum room heating position. And a motor 6 is driven from the positive pole of a power source through a central pattern 61a, brush 63, stop pattern 64, resistor element 62, switching pattern 61b and a diode 67, completely closing the damper 4. Here the motor 6 is left with the power as supplied, but the resistor 62 interposes, causing voltage and a current to be low held, and the damper can be surely closed preventing the motor from its burn or the like. |
