Abstract: After a lead block, which is assembled by fitting a required number of pin terminals into an insulating support member, is connected to an end portion of a flat cable, the lead block is mounted on a lower connector holding portion of a rotary connector. The lower connector holding portion is formed of downward protruding portions of an outer cylindrical portion and a lower cover that are snap-fitted to each other. The downward protruding portion includes a receiving recess, and the downward protruding portion includes a holding wall portion. Tip portions of the pin terminals are inserted into insertion holes of the holding wall portion, so that the lead block is mounted. While stopper portions of the pin terminals are interposed between the holding wall portion and an outer wall of the support member, the support member is disposed so as to be positioned the receiving recess.

Abstract: A rotary connector includes a stationary housing that includes an outer cylindrical body, and a movable housing that is disposed coaxially with the stationary housing and includes an inner cylindrical body facing the outer cylindrical body. An annular space portion is formed between the inner and outer cylindrical bodies facing each other and flat cables are wound and received in the annular space portion. An internal gear is provided on the outer cylindrical body of the stationary housing. A sun gear is provided on the inner cylindrical body of the movable housing. A planetary gear, which meshes with both the sun gear and the internal gear and is movable along the inner surface of a bottom plate portion of the stationary housing, is provided between the sun gear and the internal gear. The planetary gear and the sun gear include a plurality of void portions in the circumferential direction.

Abstract: After a lead block, where a required number of pin terminals are fitted to and assembled with an insulating support member, is connected to an end portion of a flat cable, the lead block is assembled with a lower connector holder of a rotary connector. The lower connector holder includes lower protruding portions of a lower cover and an outer cylindrical portion that are snap-fitted to each other. The lower protruding portion includes a receiving recess and the lower protruding portion includes a holding wall portion. Leading end portions of pin terminals are inserted into insertion holes of the holding wall portion, so that the lead block is assembled. While stopper portions of the pin terminals are interposed between the holding wall portion and the outer wall of the support member, the support member is positioned and held in the receiving recess.

Abstract: A rotary connector includes a stationary housing that includes an outer cylindrical body, and a movable housing that is disposed coaxially with the stationary housing and includes an inner cylindrical body facing the outer cylindrical body. An annular space portion is formed between the inner and outer cylindrical bodies facing each other and flat cables are wound and received in the annular space portion. An internal gear is provided on the outer cylindrical body of the stationary housing. A sun gear is provided on the inner cylindrical body of the movable housing. A planetary gear, which meshes with both the sun gear and the internal gear and is movable along the inner surface of a bottom plate portion of the stationary housing, is provided between the sun gear and the internal gear. The planetary gear and the sun gear include a plurality of void portions in the circumferential direction.

Abstract: After a lead block, where a required number of pin terminals are fitted to and assembled with an insulating support member, is connected to an end portion of a flat cable, the lead block is assembled with a lower connector holder of a rotary connector. The lower connector holder includes lower protruding portions of a lower cover and an outer cylindrical portion that are snap-fitted to each other. The lower protruding portion includes a receiving recess and the lower protruding portion includes a holding wall portion. Leading end portions of pin terminals are inserted into insertion holes of the holding wall portion, so that the lead block is assembled. While stopper portions of the pin terminals are interposed between the holding wall portion and the outer wall of the support member, the support member is positioned and held in the receiving recess.