Patent ID: 7440712
Filing Date: 2008-10-21
Classification: G03G

Abstract:
1. An original cover closer comprising: two types of opening/closing parts comprising a first opening/closing part of an original cover and a second opening/closing part of an original cover, the two types of the opening/closing parts supporting the original cover on a main body of an office equipment, the original cover having a center of gravity either to a right of center or to a left of center of the original cover; said first opening/closing part of an original cover for supporting a heavier side of the original cover and comprising a first mounting member having a bottom plate mounted on the main body and side plates erected from both sides of the bottom plate; a first supporting member having a top plate and side plates extending downward from both sides of the top plate in a direction perpendicular to the top plate, and rotatably mounted via a first hinge pin at respective end portions on one side of the both side plates to said side plates of said first mounting member; a first lifting member having a top plate for mounting said original cover and both side plates extending downward from both sides of the top plate in a direction perpendicular to the top plate and mounted via a second hinge pin at respective end portions on one side of the both side plates to the both sides of the top plate so that the first lifting member is rotatable in a reverse direction with regard to said first supporting member; and resilient means accommodated between said both side plates of said first supporting member, for rotationally urging the original cover in a direction of opening by applying a force on one end toward said first supporting member and applying a force on another end toward first lifting member; said second opening/closing part of an original cover for supporting a lighter side of the original cover and comprising a second mounting member having a bottom plate mounted to the main body and both side plates erected from both sides of the bottom plate, a second supporting member having a top plate and both side plates extending downward from both sides of the top plate in a direction perpendicular to the top plate and rotatably mounted via a third hinge pin at respective end portions on one side of the both side plates to the both sides of the top plate, a second lifting member having a top plate for mounting said original cover and both side plates formed by bending both edges of the top plate downward in a direction perpendicular to the top plate and mounted via a fourth hinge pin at respective end portions on one side of the both side plates to the both sides of the top plate so that the second lifting member is rotatable in a reverse direction with regard to said second supporting member, a torsion spring wound around the fourth hinge pin and rotatably urging said second lifting member toward a direction that it overlaps said second supporting member, by engaging an end of the second lifting member on a lower surface of said top plate of said second supporting member and another end of the second lifting member on an end surface portion toward said fourth hinge pin of said top plate of said second lifting member; and wherein the torsion spring is arranged so that the torsion spring is active and involved when said second lifting member is rotated in said reverse direction.