Resilient hinge with coil spring on pintle

摘要

A hinge device used with a rotation member having a rotational moment which varies in accordance with a rotation angle. The hinge device comprises a core bar inserted into a fixed member, a flat wire torsion spring fixed at its ends to the core bar and to the rotation members, respectively, a lever memer fixed to a portion of the core bar, and a first flat spring biasing the rotation of the core bar in a certain direction and having its ends abutting the fixed member and the rotation member. A second flat member is provided to operate against the spring torque of the flat wire torsion spring having its ends abutting the fixed member and the rotation member.