A rotary connector device comprising: a fixed body ; a rotation body that is rotatable about a rotation axis (AX) with respect to the fixed body and that is assembled to the fixed body in a manner to form a first space (S1) between the rotation body and the fixed body ; and a connector that has a second space (S2) inside communicating with the first space (S1) and that is coupled to the fixed body , wherein an exposed conductor portion provided at one end of a cable is connected to an electrode provided in the second space (S2) of the connector , the cable extends from the second space (S2) to the first space (S1) and is arranged such that the other end of the cable is connected to the rotation body , the connector comprises a cable cutting member in the second space (S2), and when the cable is pulled due to rotation of the rotation body , the cable cutting member is configured to cut the cable before the exposed conductor portion connected to the electrode of the connector is disconnected, wherein the length (L) of the cable cutting member in an extending direction (ED) along the circumferential direction of the rotation axis (AX) is set such that a tip of the cable cutting member in the extending direction (ED) comes into contact with the cable when the cable is pulled due to the rotation of the rotation body , characterized in that the length (L) of the cable cutting member is provided such that the cable cutting member intersects an imaginary line (IL) connecting the electrode of the connector and an opening (OP) provided in an outer-circumferential cylindrical portion of the fixed body and opens the second space (S2) to the first space (S1). a fixed body ; a rotation body that is rotatable about a rotation axis (AX) with respect to the fixed body and that is assembled to the fixed body in a manner to form a first space (S1) between the rotation body and the fixed body ; and a connector that has a second space (S2) inside communicating with the first space (S1) and that is coupled to the fixed body , wherein an exposed conductor portion provided at one end of a cable is connected to an electrode provided in the second space (S2) of the connector , the cable extends from the second space (S2) to the first space (S1) and is arranged such that the other end of the cable is connected to the rotation body , the connector comprises a cable cutting member in the second space (S2), and when the cable is pulled due to rotation of the rotation body , the cable cutting member is configured to cut the cable before the exposed conductor portion connected to the electrode of the connector is disconnected, wherein the length (L) of the cable cutting member in an extending direction (ED) along the circumferential direction of the rotation axis (AX) is set such that a tip of the cable cutting member in the extending direction (ED) comes into contact with the cable when the cable is pulled due to the rotation of the rotation body , characterized in that the length (L) of the cable cutting member is provided such that the cable cutting member intersects an imaginary line (IL) connecting the electrode of the connector and an opening (OP) provided in an outer-circumferential cylindrical portion of the fixed body and opens the second space (S2) to the first space (S1). <EOS>