Patent ID: 6992414
Filing Date: 2006-01-31
Classification: H02K

Abstract:
1. A method of providing electro-magnetic interference (EMI) suppression for a permanent magnet DC brush motor, the method including the steps of: providing a permanent magnet DC motor having a metal housing, brushes, and connector structure extending outside of the metal housing, the connector structure housing lead structure to power the motor, the lead structure having lead ends, connecting ends, and leg portions between the lead ends and the connecting ends, mounting a printed circuit board within the connector structure, the printed circuit board having at least one EMI suppression component for suppressing EMI of the motor, electrically connecting the connecting ends of the lead structure to the printed circuit board so that current can be provided through the printed circuit board to the brushes, providing a contact member electrically connected between the printed circuit board and the metal housing so that the at least one EMI suppression component couples the brushes to the metal housing thereby causing the metal motor housing to become an AC around and EMI shield, and molding a plastic material over the printed circuit board to cover a surface of the printed circuit board, with the plastic material defining an outermost cover for the printed circuit board, wherein the step of molding over plastic material includes molding over plastic material to cover an entire surface of the printed circuit board.