DC MOTOR WITH BRUSH AND METHOD FOR MANUFACTURING ITS ARMATURE COIL

摘要

PROBLEM TO BE SOLVED: To provide a DC motor with a brush in which the unbalance of a magnetic field state can be suppressed without increasing a manufacturing man-hour and a cost and the lead winding of an armature coil of high quality can be smoothly performed. SOLUTION: An inner coil 21a and an outer coil 21b at twice odd coil disposing positions along the rotating direction of an output shaft 2 are wired at the respective ends to intermediate commutator segments 7a of the commutator segments 7a most separated from the commutator segment 7a most approached to the coil disposing positions, and ends of the inner and outer coils 21a, 21b are wired to the different commutator segments 7a from each other in a positional relationship brought into contact with different anode brushes from each other simultaneously. When the commutator segments 7a wired at one-side ends of one-side coils of the coil disposing positions are disposed at the positions brought into contact with the anode brushes for energizing the coil, the commutator segments 7a wired to other ends of the coils are disposed at the position adjacent to the commutator segments 7a brought into contact with the anode brushes for energizing the other coil. Winding directions of leads for forming the respective coils on an armature core are all directed in the same directions. COPYRIGHT: (C)2004,JPO&NCIPI