| 摘要 |
<P>PROBLEM TO BE SOLVED: To downsize and simplify a brushless motor. <P>SOLUTION: A brushless motor 1 has: a rotation shaft 2; a rotor 3 fixed to the rotation shaft 2; a rotor magnet 4 held by the rotor 3; a stator coil 7 arranged between the rotation shaft 2 and the rotor magnet 4; a control circuit board 8 controlling energization to the stator coil 7; an upper case 11 arranged between the rotor magnet 4 and the control circuit board 8; a magnetic sensor 10 arranged on an opposite side of the rotor magnet 4 while interposing the upper case 11; and a magnetic permeable body 20 penetrating through the upper case 11 and having one end opposed to the rotor magnet 4 and the other end opposed to the magnetic sensor 10. <P>COPYRIGHT: (C)2012,JPO&INPIT |
