Patent ID: 7874745

Claim:
A lock mechanism for a sliding object, comprising: a slide arm member configured to support the sliding object and to be slidable along a predetermined slide path; a rotating lever member having a tip that abuts one end of the slide arm member and configured to rotate about a fixed rotational axis; and urging means configured to apply an urging force that causes the rotating lever member to rotate in a given direction such that the slide arm member is urged along the slide path and toward one end thereof; wherein when an external pressing force presses the slide arm member in opposition to the urging force of the urging means, the slide arm member is moved along the slide path, thereby causing the rotating lever member to rotate in the direction that is the opposite of the given direction, and when the slide arm member is additionally and continuously pressed, the tip of the rotating lever member rides onto and is stopped against the lateral surface of the slide arm member, such that the slide arm member and the rotating lever member remain stopped at the current position even if the pressing force is released.