Patent ID: 7302984

Claim:
A lock mechanism of a sliding member, the sliding member mounted on a body, the sliding member being slidably movable along the body between an engaged position and a pullout position, the sliding member comprising a contacting portion having a face, the face contacting along an outer face of the body and extending in a direction of sliding, wherein the lock mechanism comprises an engaging portion located between the body and the sliding member that prohibits the sliding member from making a sliding movement by holding the sliding member at the engaged position by a concavo-convex engagement, and an engagement release mechanism that releases the engagement of the engaging portion, when an operating force is applied to an operating portion located on the sliding member, to allow the sliding member to make a sliding movement from the engaged position to the pullout position along a direction of a sliding movement and in a direction different from the direction of the sliding movement simultaneously; the operating force including a component parallel to the direction of sliding and a component in a direction orthogonal to the contacting face, wherein the contacting face separates from the outer face of the body.