| 摘要 |
PROBLEM TO BE SOLVED: To provide a DC motor which can prevent the decrease of a brush life due to spark abrasion while keeping an output characteristic.SOLUTION: A DC motor includes a core 10 including a great number of teeth 11, a fork-like bifurcation part 12 provided in a tip portion of each tooth, an inner winding 13 wound around a base end part of each tooth, and an outer winding 14 wound between the bifurcation part of each tooth and the bifurcation part of an adjacent tooth. A winding number of the inner winding 13 and a winding number of the outer winding 14 are adjusted so that the inductance of the inner winding and the inductance of the outer winding are equal.SELECTED DRAWING: Figure 1 |
