| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a commutator motor capable of increasing the service life by coping with the secular change from the beginning to the end of the use of the commutator motor. <P>SOLUTION: In a commutator motor having a commutator which is fixed on a rotator, a brush which slides in contact with the commutator and a brush pressing device which pushes the brush on the commutator, the service life of the commutator motor can be increased because the progression of wear of the brush is restrained from the beginning to the end of the use of the commutator motor because of the pressing load which is increased by the brush pressing device as the length of the brush decreases due to wear. <P>COPYRIGHT: (C)2012,JPO&INPIT |
