Patent ID: 7307368
Filing Date: 2007-12-11
Classification: H01R,H02K

Abstract:
1. A direct current motor, comprising: a rotor including a rotation shaft and rotor coils; a stator configured to apply a magnetic field to the rotor via magnetic poles of the stator opposing magnetic poles of the rotor; a flat disc-shaped electrical parts mounting base board fixed on the rotation shaft such that the rotation shaft perpendicularly intersects the electrical parts mounting base board and such that a first flat surface of the electrical parts mounting base board faces the rotor, the flat disc-shaped electrical parts mounting base board including a layer of a conductive material into which a plane conductive pattern is formed and including a commutator section including a contact electrode part formed with the plane conductive layer pattern and connected to the rotor coils, the contact electrode part and the plane conductive layer pattern being directly formed on a second flat surface of the electrical parts mounting base board; a pair of electrode brushes in sliding contact with the contact electrode part of the commutator section and configured to supply electric power to the rotor coils through the commutator section; a support base configured to support the rotation shaft of the rotor; further comprising at least one rotation detecting brush being arcuately curved outward from the rotation shaft and in sliding contact with the contact electrode part of the commutator section and configured to detect a signal on the commutator section indicative of an operation of the direct current motor.