Patent ID: 8974234
Filing Date: 2015-03-10
Classification: B60R,H01R

Abstract:
1. A rotary connector comprising: a stationary-side housing that includes an outer cylindrical body; a movable-side housing that includes an inner cylindrical body facing the outer cylindrical body and is disposed coaxially with the stationary-side housing; a flat cable which is received in an annular space defined between the outer and inner cylindrical bodies so that the winding direction of the flat cable is reversed at a middle portion of the flat cable, and of which both ends are fixed to the stationary-side housing and the movable-side housing, respectively; and a moving body which is turnably disposed in the annular space and includes an opening through which an inverted portion of the flat cable passes, wherein a planetary gear supported by the moving body meshes with an internal gear provided on the stationary-side housing and a sun gear provided on the movable-side housing, and regulating walls, which extend in a circumferential direction of the annular space with the opening interposed therebetween, are erected on the moving body, and a plurality of protrusions, which protrude toward an inner peripheral surface of the outer cylindrical body, are repeatedly formed on outer peripheral surfaces of the regulating walls at regular intervals in the circumferential direction so that the total number N of the protrusions satisfies “11≦N≦35”, wherein wherein an opening angle θ1 of the opening on the innermost peripheral side in a radial direction is greater than approximately 0.5°.