A storing box A of the present invention, which is formed with a unit storing room (20) storing an electronic control unit (63), includes a latching part (25) by which an electric wire (62) or a connector (61) connected to one end of the electric wire (62) is caught, and the electric wire (62) passes through an inner side of the unit storing room (20) and is drawn out from a storing opening which is the entrance for storing the electronic control unit (63).
