Patent ID: 7967402

Claim:
A slide rail unit with a retaining function comprising: a first rail; a second rail capable of stroke motion along the longitudinal direction of the first rail; and an end urging means for urging the second rail toward a stroke end in the vicinity of the stroke end of the second rail, the end urging means is composed of a retaining pin provided upright so as to be movable with respect to the first rail ( 1 ) in the longitudinal direction and the width direction thereof, an elastic member for constantly urging the retaining pin toward the stroke end of the second rail, a pin guide member provided on the first rail and adapted to lock the retaining pin to a standby position spaced apart from the stroke end against an urging force of the elastic member and to guide the retaining pin detached from the standby position with the urging force toward the stroke end, and a cam member provided on the second rail and adapted to detach the retaining pin from the standby position of the pin guide member as it overlaps the pin guide member and to lock the retaining pin after the detachment, wherein the cam member is equipped with a guide groove for receiving a distal end of the retaining pin and is fixed to the second rail, and that the guide groove is composed of an introducing portion for receiving the retaining pin set to the standby position as the second rail moves, an acting portion for moving the received retaining pin in the width direction of the first rail to detach it from the standby position, and a pin detaining portion for locking the retaining pin having passed the acting portion.