A rotary connector device comprising: a fixed body; a rotation body that is rotatable about a rotation axis with respect to the fixed body and that is assembled to the fixed body in a manner to form a first space between the rotation body and the fixed body; and a connector that has a second space inside and that is coupled to the fixed body, wherein the connector includes: a first opening that connects the second space to the first space and a second opening that is partitioned with the first opening and that connects the second space to the first space, one end of a first cable is connected to a first electrode provided in the second space of the connector, one end of a second cable is connected to a second electrode provided in the second space of the connector, the first cable passes through the first opening and is arranged such that the other end of the first cable is connected to the rotation body, the second cable passes through the second opening and is arranged such the other end of the second cable is connected to the rotation body, the connector comprises a partition wall that partitions the second space in a manner to form the first opening and the second opening and that extends in an axial direction of the rotation axis, the partition wall extends in a circumferential direction of the rotation axis in the second space, characterized in that the connector comprises an additional partition wall provided farther from the first space than the partition wall and provided to separate the first cable and the second cable from each other in a direction orthogonal to the rotation axis in the second space. a fixed body; a rotation body that is rotatable about a rotation axis with respect to the fixed body and that is assembled to the fixed body in a manner to form a first space between the rotation body and the fixed body; and a connector that has a second space inside and that is coupled to the fixed body, wherein the connector includes: a first opening that connects the second space to the first space and a second opening that is partitioned with the first opening and that connects the second space to the first space, one end of a first cable is connected to a first electrode provided in the second space of the connector, one end of a second cable is connected to a second electrode provided in the second space of the connector, the first cable passes through the first opening and is arranged such that the other end of the first cable is connected to the rotation body, the second cable passes through the second opening and is arranged such the other end of the second cable is connected to the rotation body, the connector comprises a partition wall that partitions the second space in a manner to form the first opening and the second opening and that extends in an axial direction of the rotation axis, the partition wall extends in a circumferential direction of the rotation axis in the second space, characterized in that the connector comprises an additional partition wall provided farther from the first space than the partition wall and provided to separate the first cable and the second cable from each other in a direction orthogonal to the rotation axis in the second space.