METHOD FOR CONNECTING MOTHER BOARD WITH CHILD BOARD

PROBLEM TO BE SOLVED: To unrequire a connector of a wire by a method wherein a mother board and a portion being a child board are provided via a cutoff prearranged part on one sheet of board, a lead wire for electrically connecting each mother board with each child board is wired across the cutoff prearranged part, and both the boards are cut off by the cutoff prearranged part. SOLUTION: A mother board 1 and a child board 2 are integrally structured as a sheet of board. Notches 3 of V-shaped groove form being a cutoff prearranged part are continuously made between the motherboard 1 and the child board 2. A lead wire 4 for electrically connecting the mother board 1 with the child board 2 is wired across the notch 3. As the lead wire, a tin plating copper wire having a single core and stiffness is employed. The board is bent by the notch 3 so that the mother board 1 is mutually separated from the child board 2. The mother board 1 is screwed down in a casing. The child board is coupled to the mother board via the lead wire 4 and screwed down on a front face of the casing. Accordingly, a connector can be unrequired for the wiring between the mother board 1 and the child board 2.