Abstract: A hinge device is provided. In the hinge device including a flange, a shaft portion having a shaft having a diameter equal or smaller than that of the flange, a supporting portion through which the shaft portion inserts into rotatably, a stopper rotating together with the shaft for restricting the degree of rotation of the supporting portion and at least one first spring portion for applying an elastic force against the supporting portion are located between the flange and the supporting portion, and at least one second spring to apply elastic force against the supporting portion and a washer to prevent the nut from being loosened are located between the nut and the supporting portion.