| 摘要 |
PROBLEM TO BE SOLVED: To provide a highly durable DC motor capable of supplying a large current to an armature coil while preventing the occurrence of arc sparks without constructing a complicated control circuit. SOLUTION: The DC motor includes a plurality of armature coils 2 to which drive current for rotating a rotor shaft 4 flows, field magnets 51 generating a magnetic field flux acting on the armature coils 2, a coil terminal 32 which is conductively connected to both ends of the armature coil 2, a pair of positive and negative conductive contactors 7 which are conductively connected to a DC power supply E and are intermittently brought into conductive contact with the coil terminal 32, and a magnetic field generation unit 6 forming a magnetic field between a pair of magnetic poles facing across contact parts of the coil terminal 32 and the conductive contactors 7. The coil terminal 32 and the conductive contactors 7 are brought into contact with each other and are separated each other in the magnetic field by the magnetic field generation unit 6 while they relatively rotate with the rotor shaft 4 as a center. COPYRIGHT: (C)2011,JPO&INPIT |
