| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a direct-current motor which prevents the magnetic saturation of the teeth of an armature core even if a motor is in a heavy load state. <P>SOLUTION: A direct-current motor 1 includes: a cylindrical yoke housing 2; a plurality of magnets 4 attached to an inner wall of the yoke housing 2 so as to alternately have different magnetic poles in a circumferential direction; an armature 5 rotatably disposed on the inside of the magnets 4; and a brush 6 for supplying an electric current from a power supply to the armature 5. The armature 5 is set to rotate in a predetermined rotating direction D decided in advance. As compared with magnetic flux amount formed by a first magnet portion 4a positioned on the predetermined rotating direction D side rather than a center C of the magnets 4, magnetic flux amount formed by a second magnet portion 4b positioned on the opposite side to the predetermined rotating direction D rather than the center C of the magnets 4 is made to be smaller. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
