Patent ID: 8156612

Claim:
An angle-adjustable hinge comprising: an approximately disc-shaped gear member having a non-circular through hole; a first member having a case portion provided with means for holding the gear member for free rotation around an axis of the through hole; a second member on which a fitting shaft portion detachably inserted to the through hole of the gear member is protruding; a wedge sliding face is disposed on the first member to form a wedge-shaped space between the wedge sliding face and an arc-shaped outer toothed face of the gear member when observed in the direction of the axis; a floating wedge member, of which one face side is an arc-shaped inner toothed face to engage with the outer toothed face of the gear member and an outer face side is a contact face to contact the wedge sliding face, and the floating wedge member movable within the wedge-shaped space; and when the contact face of the floating wedge member contacts the wedge sliding face, and the inner toothed face engages with the outer toothed face, oscillation of the gear member in one direction toward the first member is restricted by wedging of the floating wedge member between the outer toothed face and the wedge sliding face.