To reduce costs by simplifying the fixed operation of a flexible flat wiring member.

Opposite wall faces 14a and 14b of a wiring member storing part 14 having an opposite U-shaped internal wall formed at the side of the main body 11 of a center console box 10 are formed with a stopper 15, and the fixed wiring 21 of an FPC harness 20 is inserted into the wiring member storage 14 in a status that it is bent according to its inverse U-shape. The FPC harness 20 is stored in the wiring member storage part 14 so as to be shaped like the inverse U-shape in a status that both wide edge parts 22 of the fixed wiring part 21 are butted to and engaged with an edge 15a at the side wall face 14c side of the stopper part 15. The fixed wiring 21 is fixed in the wiring member storage 14 with a holding force equivalent to a self-restoration force.