| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To ease conditions for unlocking a door while securing safety of an automatic door lock in an automatic door lock mechanism for automatically locking the door when a travelling speed reaches or exceeds a predetermined speed which is set in advance. <P>SOLUTION: The door unlocking device for forcibly releasing the locked state of the door manually in the automatic door lock mechanism for automatically locking the door when a travelling speed reaches or exceeds a predetermined preset speed is provided with a dedicated switch 15 for unlocking which is operated by a person. When the dedicated switch 15 for unlocking is operated while travelling at a predetermined speed or above, a door lock control part 20 disables the automatic door lock mechanism and forcibly releases the door lock. Then, a predetermined time is measured after the release. When the travelling continues at the predetermined speed or above even after elapse of the predetermined time, the automatic door lock mechanism is activated and the door is automatically re-locked. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
