Patent ID: 7654624
Filing Date: 2010-02-02
Classification: A47B

Abstract:
1. A slide rail assembly comprising: an outer slide rail having a protrusion arranged thereon, the protrusion comprising an inclined surface at a top thereof angling up from a first end to a second end thereof, and an upright surface perpendicularly extending down at the second end of the inclined surface; an intermediate slide rail slidably attached to the outer slide rail, the intermediate slide rail defining a slot therein; an inner slide rail slidably attached to the intermediate slide rail, the inner slide rail having a release portion and a stop portion in the vicinity of one end of the inner slide rail, the stop portion comprising a stop surface at an end thereof adjacent to the release portion, the release portion comprising a release surface on top of the release portion; a latch member attached to the intermediate slide rail and slidable along the slot of the intermediate slide rail, the latch member comprising a first engaging portion and a second engaging portion; and a resilient member connected to the latch member and the intermediate slide rail for restoring the latch member; wherein in extending the slide rail assembly from a superposed state, the inner slide rail is pulled to slide out from the intermediate slide rail, the stop surface of the stop portion of the inner slide rail engages with the first engaging portion of the latch member to drive the intermediate slide rail to extend out from the outer slide rail; wherein when the latch member moves to the protrusion of the outer slide rail, the inclined surface of the protrusion presses the second engaging portion of the latch member to drive the latch member to slide in the slot of the intermediate slide rail against resistance of the resilient member until the first engaging portion of the latch member is disengaged from the stop surface of the stop portion of the inner slide rail, the inner slide rail continues to slide out from the intermediate slide rail, the second engaging portion of the latch member rides over the inclined surface of the protrusion, and is placed at the upright surface of the protrusion; and wherein in superposing the slide rail assembly from a fully extended state, the inner slide rail is pushed to slide into the intermediate slide rail, the second engaging portion of the latch member engages with the upright surface of the protrusion to stop the intermediate slide rail sliding into the outer slide rail, when the release surface of the release portion engages with the first engaging portion of the latch member to drive the latch member to slide in the slot of the intermediate slide rail until the second engaging portion of the latch member is disengaged from the upright surface of the protrusion, the intermediate slide rail is driven to slide into the outer slide rail.