| 摘要 |
PROBLEM TO BE SOLVED: To provide a brushless motor capable of preventing positively a fallout of a magnet from magnet mounting holes equipped on a rotor. SOLUTION: In a brushless motor having a stator 15 mounted on a motor case 12 and equipped a hole 15a for rotor and a rotor R arranged in the hole 15a, the rotor R comprises a rotor body 19 made of magnetic material, a rotor shaft 17 to rotatablly hold the rotor body 19 to the motor case 12, magnet mounting holes 20 getting longer in a circular arc shape along with a circumference face of the rotor body 19 and opening to both end faces in the direction of shaft line of the rotor body 19 and a permanent magnet 21 fitted in the holes 20 to magnetize the rotor body 19, and end plates 22, 23 mounted on the both end faces in the direction of the shaft line of the rotor body 19 to close opening ends of the holes 20 are equipped. |
