| 摘要 |
There is provided, at a low cost, an axial air-gap electronic motor capable of preventing a magnet from coming off and carrying out position detection more surely. In an axial air-gap electronic motor in which the teeth surface of a stator and the magnet surface of a rotor are arranged opposedly with a predetermined gap being provided therebetween along the axis line direction of the output shaft of the rotor, the rotor has a rotor back yoke arranged coaxially with the stator and a rotor magnet installed to the rotor back yoke so as to face to the teeth surface of the stator, and the rotor magnet is provided with an anchor magnet which is integral with the rotor magnet and is arranged on the back surface side of the rotor back yoke. The anchor magnet 36 integral with the rotor magnet 32 via a through hole 35 is provided on the back surface side of the rotor back yoke 31 of the rotor 3 , thereby fixing the rotor magnet 32 , and further position detection is carried out by the anchor magnet 36.
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