| 摘要 |
<p>PROBLEM TO BE SOLVED: To perform an insulation withstanding voltage test of a DC motor with ease and with high reliability without increasing a size of an on-vehicle motor.SOLUTION: A DC motor 100 is provided with an insulator brush plate 17 to which a brush holder 56 holding a brush 21 is attached, and a conductive metal cover 18 assembled with the brush plate to cover an opened part side of a yoke 12. A choke coil is provided at a side of a surface where the brush plate is opposed to an armature, and a capacitor 50 is provided in a groove 75c provided at a side of a surface where the brush plate is assembled with the metal cover. One lead wire of the capacitor is electrically connected with the choke coil, and the other lead wire of the capacitor is provided electrically connectably with the metal plate after the insulation withstanding voltage test.</p> |
