| 摘要 |
PURPOSE:To form a lock detecting device in small size, by detecting a position of a door and a locked condition of the door in an automobile air conditioning device. CONSTITUTION:A rotary angle of a motor actuator 4 in a door driving mechanism in an automobile is detected by a position detector unit 8. A door position signal from this unit 8 is stored in a microcomputer 21, and a driving signal displacing a door from its position to a desired position is output to a motor driving control circuit 14 to drive the acutator 4 and open and close the air mixing door. At this time, whether the door is actuated or not as indicated by the driving signal is dicided by comparing an output position signal from the unit 8 with a memory position signal by the computer 21 to detect a locked condition of the air mixing door. |
