PURPOSE: To make possible easy soldering of a conductor passing through a printed board from a front side to a rear side conducting part, to make possible easy integration of the printed board, and a case and a cover of an electronic device main body and to prevent the generation of cracks and cutting in a soldering part caused by weight of various parts mounted on a printed board when an electronic device is vibrated and impacted.

CONSTITUTION: A terminal block 12 with a terminal board 13 is mounted on a printed board 14 alone. Cut-out parts 17c, 18c or opening parts wherein the terminal block 12 is exposed are formed in both or one of a case 17 and a cover 18. The case 17 and the cover 18 are made to be combined by fitting. The printed board 14 whereon the terminal block 12 is mounted is held by the case 17 and the cover 18.