| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an electronic controller which enhances electrical connection reliability of a metal member and a circuit board, when fixing the metal member to the circuit board by using a mounting screw.SOLUTION: A circuit board 5 is provided with a hole 55 for attaching a mounting screw 24, a plurality of first copper foil pattern lands 51 formed at positions having a diameter smaller than that of the head 24A of the mounting screw 24, on a surface facing a metal frame 22 around the hole 55, and a plurality of second copper foil pattern lands 52 formed at positions having a diameter larger than that of the head 24A on a surface facing the metal frame 22 around the hole 55. Electrical connection of the metal frame 22 and the circuit board 5 is made via the first and second copper foil pattern lands 51, 52 and solders 53, 54 provided thereon.</p> |
