20130234569 | DIRECT CURRENT MOTOR - A direct-current motor comprises: a stator including a shell, a main magnetic pole, and an exciting coil; a rotator disposed inside the stator; a brush holder disposed at an end of the shell; first and second carbon brushes disposed on the brush holder and contacted with the rotator, respectively; a current-direction controller disposed on the brush holder and connected with the first and second carbon brushes and first and second ends of the exciting coil, respectively, to control a direction of a current supplied to the exciting coil; and a cover disposed at the end of the shell to enclose the brush holder. The motor is compact in structure, small in volume, and occupies a small mounting space, and the work load of sealing and insulating is reduced, thus reducing the cost and improving the manufacture efficiency. | 09-12-2013 |