Patent ID: 7606511
Filing Date: 2009-10-20
Classification: H04N

Abstract:
1. An opening and closing device, comprising: a device main body; an opening and closing body pivotally supported by the device main body about a support shaft between a closed position and an open position; and a helical torsion coil spring that urges the opening and closing body positioned at the closed position in the open direction, wherein the helical torsion coil spring consisting of: at the approximate angular area where the center of gravity of the opening and closing body goes beyond the support shaft in the open direction when the opening and closing body is pivoted from the closed position in the open direction, the one end part of the helical torsion coil spring separates from one end of the latching slot of the holding member, and the urging of the opening and closing body in the open direction by the helical torsion coil spring ceases until the opening and closing body reaches the open position.