| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an effective technology for easily adjusting an output characteristic of a motor by adjusting the number of turns of a coil constituting a stator winding in a power tool on which a brushless motor is mounted. <P>SOLUTION: The brushless motor having rotors 122 and 133 with permanent magnets installed thereon, the cylindrical stator, and the three-phases stator windings which are disposed on an inner-peripheral side of the stator and rotate and drive the rotors, is loaded on the power tool. A plurality of slots are formed on an inner face of the stator, in a circumferential direction at prescribed intervals; the plurality of coils wound to the plurality of slots of the stator are connected to the respective three-phases stator windings; and the total number of turns of the plurality of coils wound to the slots of the same phase is the same as for each of the three-phases, and is not a multiple of the number of the slots of the same phase. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
