Patent ID: 8808016
Filing Date: 2014-08-19
Classification: B60R,H01R,H02G

Abstract:
1. A rotatable connector device, comprising a rotator including a ring-shaped rotatable-side ring plate and an inner cylindrical section having a cylindrical shape and formed along an inner circumferential edge of the rotatable-side ring plate, and a stator including a ring-shaped fixed-side ring plate and an outer cylindrical section having a cylindrical shape and formed along an outer circumferential edge of the ring-shaped fixed-side ring plate, the rotator and the stator being engaged with each other so as to be rotatable with respect to each other in a clockwise direction and a counterclockwise direction; wherein: in an accommodation space defined by the rotatable-side ring plate and the inner cylindrical section of the rotator and the fixed-side ring plate and the outer cylindrical section of the stator, a ring-shaped retainer for axially supporting at least three rotatable rollers is accommodated, and also a flat cable for electrically connecting the rotator and the stator to each other, the flat cables having a reversed part which is turned around in the middle of the flat cable in a length direction thereof, is accommodated such that the flat cable can be wound and unwound; the three rotatable rollers are located on a top surface of the retainer, concentrically with the retainer at an equal interval in a circumferential direction of the retainer, and a regulation section on which the reversed part is allowed to be pressed is provided on the top surface of the retainer at a position away from one of the three rotatable rollers, on the side of a part of the one rotatable roller along which the reversed part can be wound, the regulation section being away from the part of the one rotatable roller by a gap which allows the reversed part to contact or detached from the one rotatable roller; and an axial center of the one rotatable roller along which the reversed part can be wound is located outer to a reference line connecting axial centers of the other two rotatable rollers which are located concentrically with the retainer in the circumferential direction of the retainer.