CABLE WINDING DEVICE AND FLAT CABLE ROUTING STRUCTURE FOR SLIDE SEAT

[Object]An object is to provide a cable take-up device with a compact structure that can supply power to a slide seat, and a flat cable routing structure for a slide seat.[Solution]A cable take-up device (6) of a cable routing body (5) routed for a slide seat (4) slidably supported so as to be movable forward and backward along a fixed rail (2) fixed to the vehicle cabin floor includes a take-up housing part (7) that takes up a housed portion (56) in a drawable manner and houses the housed portion (56) inside with a front end portion (52) fixed to a rail front end portion (2X) and a rear end portion (55) fixed to the slide seat (4), a take-up force generation part (8) that generates a take-up force in a direction of take-up of the housed portion (56) through drawing of the cable routing body (5), and a slit (614) that applies the take-up force of the take-up force generation part (8) to the housed portion (56). The rear end portion (55) is output to the outside from the take-up center of the take-up housing part (7), and the take-up force generation part (8) is disposed on the vehicle width direction inside (Wi) of the take-up housing part (7).