| 摘要 |
PURPOSE: To instantly and previously unlock a door manually by automatically locking a carriage when a screw connected to a motor and a nut that can travel along the screw reach one end point. CONSTITUTION: A wooden door is displaced by a motor for rotating and driving a screw 3 that is mounted to a carriage 11. Also, the carriage 11 is displaced in both directions on the screw 3. Then, the screw 3 is mounted to a fixed bearing 4 in one piece with a fixed rail 5 so that the screw 3 can be rotated. Then, the wooden door 1 is driven via a joint 13 for connecting the carriage 11 in translation motion. Then, when the carriage 11 reaches a traveling end point, the screw 3 is rotated in a direction for stressing the nut and the spring is automatically unlocked, thus instantly and previously unlocking the door. |
