A rotary connector device comprising: a rotation body and a fixed body that engage with each other in a relatively rotatable manner and form, in an interior thereof, a housing space (S) having a cylindrical shape; and a flat cable housed in the housing space (S) in a wound manner, wherein the rotation body comprises: a rotating-side ring plate having an annular shape and an inner-circumferential cylindrical portion having a cylindrical shape and forming an inner peripheral surface of the housing space (S), the fixed body comprises: a stationary-side ring plate having an annular shape and an outer-circumferential cylindrical portion forming an outer peripheral surface of the housing space (S), the flat cable has a first end coupled to a stationary-side connector that is electrically connected to an electric device item disposed at a side of the fixed body , the fixed body comprises an insertion portion that allows a first end side of the flat cable to be inserted from the housing space (S) toward an outer side of the fixed body along a rotation axis (A) direction of the rotation body that relatively rotates, the stationary-side connector is disposed on a main surface of the stationary-side ring plate on an outer side thereof; the rotary connector being characterized in that the main surface of the stationary-side ring plate on the outer side thereof comprises a placement part used to place the stationary-side connector , a wall-shaped partition portion is arranged to separate the insertion portion and the placement part , and in that the flat cable extends from the housing space (S) through the insertion portion and is looped back over the partition portion to the stationary-side connector placed at the placement part . a rotation body and a fixed body that engage with each other in a relatively rotatable manner and form, in an interior thereof, a housing space (S) having a cylindrical shape; and a flat cable housed in the housing space (S) in a wound manner, wherein the rotation body comprises: a rotating-side ring plate having an annular shape and an inner-circumferential cylindrical portion having a cylindrical shape and forming an inner peripheral surface of the housing space (S), the fixed body comprises: a stationary-side ring plate having an annular shape and an outer-circumferential cylindrical portion forming an outer peripheral surface of the housing space (S), the flat cable has a first end coupled to a stationary-side connector that is electrically connected to an electric device item disposed at a side of the fixed body , the fixed body comprises an insertion portion that allows a first end side of the flat cable to be inserted from the housing space (S) toward an outer side of the fixed body along a rotation axis (A) direction of the rotation body that relatively rotates, the stationary-side connector is disposed on a main surface of the stationary-side ring plate on an outer side thereof; the rotary connector being characterized in that the main surface of the stationary-side ring plate on the outer side thereof comprises a placement part used to place the stationary-side connector , a wall-shaped partition portion is arranged to separate the insertion portion and the placement part , and in that the flat cable extends from the housing space (S) through the insertion portion and is looped back over the partition portion to the stationary-side connector placed at the placement part . <EOS>