PIVOTALLY SUPPORTING DEVICE FOR ORIGINAL BAIL MEMBER

PROBLEM TO BE SOLVED: To easily attach/detach a hinge member to/from an image forming device main body with a finger by providing a pressing piece part for releasing the engagement of a hook part with a hook engaging part, in an elastic drooping piece. SOLUTION: The hinge member 1 is integrally provided with a pair of hinge pins 2 concentrically arranged and the elastic drooping piece 4 having the hook part 3 in the bottom end part, respectively. The elastic drooping piece 4 is provided with a pressing projection part 4a which is forcibly bent, to release the engagement of the hook part 3 with the hook engaging part. The pressing projection part 4a is pushed inward (the side of the drooping piece 4) with the finger, to easily release the hook part, 3 from the hook engaging part. Moreover, when the hook part 3 is engaged with the hook engaging part, as well, the pressing projection part 4a is pushed in the same direction with the finger, to easily detachably fix the hinge member 1 on the side of the image forming device main body.