Hinge device

Abstract

In order to fabricate a hinge device for opening and closing an opening and closing member which is opened and closed one-sidedly or relatively in respect of a main body of the device in a small size, with a structure as simple as possible and inexpensively, the device is constituted by a shaft installed with a flange portion at one end portion thereof, a fixing member having a rotational lock which is engaged with other end portion of the shaft such that the fixing member does not come of f the other end portion and fixed to one connecting portion of the opening and closing member which is constituted to be rotatable along with the shaft, a fixed cam having a rotational lock which is fixed to other connecting portion of the opening and closing member while rotatably inserting the rotating shaft through a central portion thereof on a side of the flange portion of the rotating shaft, a rotary sliding cam which is installed between the fixed cam and the fixing member, engaged with the shaft inserted through a central portion thereof, is rotatable along with the shaft and slidable in the axial direction and a compression spring elastically installed between the rotary sliding cam and the fixing member by being wound around the shaft in which the fixed cam is installed with a pair of cam portions at opposed positions at one side face thereof and the rotary sliding cam is installed with projected portions which are brought into press contact with the cam portions of the fixed cam.