members 100 and a first pipe 300 fixed between the support brackets 200 in a transverse direction and installed to be supported at a front of the door frame df it is preferable that the first pipe 300 be manufactured to be light weight and have a minimized circumferential thickness further even if the first pipe 300 is made of a light weight material it is possible to have a sufficient strength fig3 is a cross sectional view illustrating the hinge member 100 of the exercise bar mounted on the door frame according to the present invention the hinge member 100 includes a circular plate 110 and a support plate 120 the circular plate 110 is fixed to the door frame df through a circular plate fastener 112 such as a screw and the support plate 120 is provided at a side surface of the circular plate the support plate 120 is fixed to a side surface of the circular plate 110 through a support plate fastner 122 such as a screw and supports the support bracket 200 to rotate without escaping from the door frame df the support bracket 200 includes a circular hole 220 formed on one side thereof and into which.