Patent ID: 7669287

Claim:
A hinge structure installed in a cover lifting type mobile electronic product to couple a cover to a base member for allowing said cover to be opened from said base member and then closed on said base member, the hinge structure comprising: master connecting means, said master connecting means having a bottom end at a bottom side thereof and a top end at a top side thereof; auxiliary connecting means arranged in parallel to said master connecting means, said auxiliary connecting means having guide means at a bottom side thereof and retaining means at a top side thereof, said auxiliary connecting means being movable forwards and backwards relative to said master connecting means; a first hinge unit mounted on said base member of said lifting cover type mobile electronic product and pivoted to the bottom end of said master connecting means for allowing rotation of said master connecting means relative to said base member of said lifting cover type mobile electronic product, said first hinge unit comprising at least one guide pin movably inserted through the guide means of said auxiliary connecting means; and a second hinge unit mounted on said cover of said lifting cover type mobile electronic product and pivotably mounted to the top end of said master connecting means, said second hinge unit being non-rotatably engageable in the retaining means of said auxiliary connecting means to prohibit rotation of said cover relative to said master connecting means; and wherein when opening said cover from said base member, said master connecting means is turned with said cover relative to said base member and said guide means of said auxiliary connecting means is moved relative to said guide pin, thereby causing said auxiliary connecting means to move relative to said master connecting means to have said second hinge unit be released from the retaining means of said auxiliary connecting means for allowing said cover be further rotated relative to said master connecting means.