| 摘要 |
PROBLEM TO BE SOLVED: To quickly perform unlocking without enlarging the operation space of an operation member when the operation member for opening a door is operated, and to suppress the operation force of the operation member from being increased as much as possible. SOLUTION: A lock mechanism 15 has a lock member 6 and a lock spring 18, and a member 7 to be locked is locked by the lock member 6 as the door 4 is closed. A push button 9 is operated in a prescribed direction by an operation by a user. An unlocking mechanism 16 has an operation force transmission member 28, a guide part 6e and a pin 28a in slidable contact with the guide part 6e, converts the moving displacement of the operation force transmission member 28 based on the operation of the push button 9 to an unlocking direction by the slidable contact of the guide part 6e and the pin 28, transmits it to the lock member 6 and moves the lock member 6 in the unlocking direction against the energizing force of the lock spring 18. Of the angle of the guide part 6e, the angle at a part from a point of starting movement in the unlocking direction of the lock member 6 to a part in the middle of the movement is set to be smaller than the angle at a part from the part in the middle of the movement to the point of ending the movement. COPYRIGHT: (C)2011,JPO&INPIT
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