Patent ID: 7673905

Claim:
A lock device of a sliding mechanism, said lock device comprising: a guide rail extending along a longitudinal axis; a moving member adapted to slide in a first direction along the guide rail, said moving member comprising a block body having two spaced apart recesses formed therein, each of said recesses containing a spring; at least a pair of locking members provided with the moving member, each of said locking members disposed in one of the recesses of the moving member and being reciprocally movable therein along a movement axis in a direction substantially perpendicular to the longitudinal axis of the guide rail, each of said locking members further having an inclined contact face disposed at an angle with respect to the movement axis of the locking member, and having a locking edge spaced, in the first direction, a distance S from a locking edge of an immediately adjacent locking member; and an elongated locking rail disposed parallel to the guide rail, the locking rail having a serrated configuration in which a group of locking grooves are formed therein and interspersed with a plurality of projecting teeth arranged in the first direction of the moving member, wherein each of said projecting teeth includes a locking face and an inclined slide face, and wherein each groove of the group is separated from an immediately adjacent groove by a distance L; wherein the locking edges of the locking members are configured to selectively engage with different ones of the locking faces of said projecting teeth adjacent said locking grooves to lock the moving member in various engagement positions when the moving member slides in a second direction opposite the first direction along the guide rail, wherein the distance S is not a multiple of the distance L such that the moving member becomes locked in one of the engagement positions on the guide rail after moving an interval smaller than the distance L in the second direction.