Patent ID: 8418319

Claim:
A hinge mechanism including: a shaft that is connected with a rotating body and serves as an axis of rotation; a base that pivotally supports the shaft to be rotatable, and also has a click recess on a circumference centering the axis of rotation; a plate that is attached at an end portion of the shaft in such manner that the plate and the shaft are rotated integrally with each other; and a leaf spring that is located between the base and the plate, and into which is fitted the shaft in such manner that the leaf spring and the shaft are rotated integrally with each other, wherein the leaf spring has a click projection that engages with the click recess that is provided in the base to thus hold the rotating body in a predetermined rotation angle position, wherein the leaf spring has a sliding friction projection that slides when pressed into contact with the base, the sliding friction projection being on an opposite side of the axis of rotation with respect to the click projection, and wherein the plate includes a drawn recess that receives the sliding friction projection as the sliding friction projection is pressed into contact with a surface of the base.