Patent ID: 6707219
Filing Date: 2004-03-16
Classification: H02K,Y10S,Y10T

Abstract:
A small-sized motor, comprising:a hollow cylindrical metal case with a bottom where a magnet is attached to an inside periphery; a synthetic resin case cover which is fitted to close an opening part of said case; and a rotor where a laminated core, a winding wound around said laminated core, and a commutator are attached on a shaft, wherein to said case cover, a printed board where an electric circuit including an electric element is attached is mounted, and said printed board has a soldering part which is connected to a member attached to the interior of the case cover for being connected to an electric power source supplied from the outside and a soldering part which is connected to a projection in a notch provided on the opening part side of said metal case for body-earthing the earth of said electric circuit, and in said soldering part for the body-earthing, when assembling the motor, a pair of electrodes are brought into contact from the outside of the metal case near said soldering part to weld said soldering part by the principle of electric resistance welding, after fitting said case cover to said metal case opening part.