| 摘要 |
A door control mechanism for controlling the movement of a one-piece door between the closed position and the open position thereof, wherein the door is biased toward the closed position thereof, the mechanism accommodating manual movement of the door to the open position followed by an automatic movement of the door to the closed position, followed by an automatic movement of the door to the open position, and then followed by a manual movement of the door to the closed position, the mechanism including a door bar pivotally mounted to the door for pivotal movement with respect thereto and for pivotal movement therewith in response to movement of the door between the closed and the open positions thereof, first latch mechanism having a door-bar-holding condition for holding the door in its open position and having a door-bar-releasing condition for permitting movement of the door to the closed position thereof, a door-driving device operative when connected to the door automatically to move the door from the closed position thereof to the open position thereof, a second latch mechanism having a device-connecting condition for connecting the door-driving device to the door and having a device-holding condition for maintaining the door-driving device out of operative connection with the door, a trigger for selectively operating the first and the second latch mechanisms and biasing means for selectively rendering the trigger operable to change the condition of only one of the first and the second latch mechanisms at one time.
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