| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a DC motor for effectively reducing a brush sound while restraining an increase in magnetic sound. <P>SOLUTION: In a pair of power feed brushes formed by two power feed brushes 24a, 24c sandwiching a commutator 27, one power feed brush 24c is disposed at a position circumferentially shifted by a prescribed angleαfrom an opposite position of 180°on the basis of the other power feed brush 24a. In a pair of power feed brushes formed by two power feed brushes 24b, 24d sandwiching the commutator 27, one power feed brush 24d is disposed at a position circumferentially shifted by a prescribed angleβfrom an opposite position of 180°on the basis of the other power feed brush 24b, thus allowing the power feed brushes 24a, 24c and the power feed brushes 24b, 24d to abut on each segment 33 at a side of the commutator 27 at each different timing. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
