Patent ID: 7347515
Filing Date: 2008-03-25
Classification: A47B

Abstract:
1. A sliding rail assembly auto opening mechanism used in a sliding rail assembly, said sliding rail assembly comprising an outer rail fixedly mounted on the inside wall of a desk, an intermediate sliding rail axially movably mounted in said outer rail, an inner sliding rail axially movably mounted in said intermediate sliding rail and affixed to one side panel of a drawer receivable in said desk, a first bushing set between said inner sliding rail and said intermediate sliding rail, and a second bushing set between said intermediate sliding rail and said outer rail, said sliding rail assembly auto opening mechanism comprising: a holder block affixed to the outer rail of said sliding rail assembly, said holder block comprising a longitudinal sliding track extending in direction corresponding to the moving direction of said drawer, two longitudinal sliding slots symmetrically formed in said longitudinal sliding track at two opposite lateral sides, said longitudinal sliding slots each having a rear end terminating in a rear stop edge and a front end curved forwardly downwards and forming a retaining groove, a locating notch disposed in said longitudinal sliding track on the middle near a front side of said longitudinal sliding track, and a stop face disposed at a rear side of said longitudinal sliding track adjacent to the rear stop edge of each of said longitudinal sliding slots, and a pivot perpendicularly extending from a bottom wall of said longitudinal sliding track; a rocker, said rocker having a rear coupling hole pivotally coupled to the pivot of said holder block and a front locating rod; a sliding hook, said sliding hook comprising a top wall, a bottom wall, two front guide rods and two rear guide rods respectively coupling to the longitudinal sliding slots of said holder block to guide forward/backward movement of said sliding hook along said longitudinal sliding track, a front sloping guide face raised from the top wall near a front side thereof, a rear stop block protruded from the top wall near a rear side thereof, a locating groove transversely formed in the top wall on the middle between said front sloping guide face and said rear stop block, a locating hole situated at the front side, a guide-in groove formed in the bottom wall, a retaining groove formed in the bottom wall in communication with said guide-in groove, a guide-out groove formed in the bottom wall, a sliding groove formed in the bottom wall and connected between said retaining groove and said guide-out groove, a sloping block protruded from the bottom wall for guiding the locating rod of said rocker into said guide-in groove, and a front open groove disposed at a front side of said sloping block, said guide-in groove comprising an entrance, a curved groove portion, and a guiding groove portion; said curved groove portion being in communication with one side of said retaining groove; a spring member connected between the locating hole of said sliding hook and the locating notch of said holder block; and a actuating member fixedly connected to the front side of the inner sliding rail of said sliding rail assembly, said actuating member having an actuating rod.