| 摘要 |
<p>PURPOSE: A brushless motor is provided to be capable of suppressing the generation of electronic noise by simultaneously fixing a flange of a bearing holder, a core, a core holder, a metal board using a tap screw. CONSTITUTION: The brushless motor(1) is a direct PWM(Pulse Width Modulation) mode motor, and a rotor(5) rotated together with a rotating shaft(10), a stator(30) having a stay core(32) wound with a drive coil(31), a metal board(40), and a motor drive circuit(60) formed on the metal board. At least one of the metal board(40) and the stay core(32) is connected to a fixed potential through a conductive connecting member. Further, at least one of a connecting part of a main body to which the motor(1) is attached, the metal board(40) and the stay core(32) has insulation resistance of at least 1 kilo-ohm.</p> |
