Patent attributes
In a lock device of a sliding mechanism, a pair of locking claws provided on a moving member are brought into resilient engagement with locking grooves of a locking groove group, whereby downward sliding of the moving member is permitted but upward sliding thereof is locked. The distance between the locking claws is longer than distance between the locking grooves, so that the moving member becomes locked against upward sliding at an interval smaller than the distance between the locking grooves. Thus, the moving member adapted to slide in one (downward) direction along a guide rail can be reliably locked against movement in the opposite (upward) direction at a very small interval.