| 摘要 |
PURPOSE:To lock an opening and closing door at a specified position sufficiently and securely despite the fact that it can be manufactured at low cost by improving a door lock means of an automatic door device, and function structure members of the lock means as a rotary disk to detect the rotational position of an electric motor for driving the opening and closing door. CONSTITUTION:A member to be arrested 20 is connected to an output shaft 14 of an electric motor for driving an opening and closing door 12, and means to be locked are formed in the member to be arrested at specified circumferential intervals. Also a keep solenoid 26 is provided, and the plunger 30 of the solenoid is provided with a arresting rod 40. The arresting rod is locked to the means to be locked of the member to be arrested, thus locking a door at a specified position. Then a detecting means to detect the rotational position of the electric motor is provided oppositely to the means to be locked of the member to be arrested. |
