Electrically connecting circuit boards to motor casings

摘要

A miniature motor having a metallic case with a printed circuit board installed therein. The printed circuit board has an electronic circuit, mounted thereon, for controlling the miniature motor. A lug portion is provided protruding from the edge of an open end of the metallic case. An engaging portion is provided for engaging the lug portion with an earth terminal of the printed circuit board. The earth terminal and the lug portion are electrically joined by means of soldering in a state the printed circuit board is fitted to the metallic case in such a manner as to engage the lug portion with the engaging portion.