Patent ID: 7100240

Claim:
A hinge device having angle set function, comprising: a shaft; a fixed part provided adjacent to one end of the shaft and not to rotate with rotation of the shaft; a first cam member having an engaging portion for engagement with a part of the fixed part, in a surface opposed to the fixed part, and an angle hold portion in an surface opposite thereto; a second cam member provided for rotating about the shaft and for sliding over the shaft, and having an angle hold portion for holding, at a predetermined angle, an own rotation angle relative to the first cam member cooperatively with the angle hold portion of the first cam member; an elastic member for always biasing the second cam member toward the first cam member; a prevention member arranged between the fixed part and the first cam member and for preventing against engagement between the part of the fixed part and the engaging portion of the first cam member; a first arm for rotating with rotation of the shaft; and a second arm not for rotating with rotation of the shaft; whereby the first cam member is to rotate with rotation of the shaft when the prevention member prevents against an engagement between the part of the fixed part and the engaging portion of the first cam member, the first cam member being arranged not to rotate with rotation of the shaft when engagement is made between the part of the fixed part and the engaging portion of the first cam member.