| 摘要 |
A driving source of automatic door is provided to prevent thickness of radial direction of a stator yoke by removing a space for winding an armature coil of a stator yoke. A driving source(102) of an automatic door comprises a driving source output axis(104), a rotor yoke(140), a permanent magnet(144), a plurality of armature coils(142), and a stator yoke. The driving source output axis draws out a rotation output. The rotor yoke is concentric with the driving source output axis. The permanent magnet is concentric with the rotor yoke, and is integrated with the rotor yoke. A plurality of armature coils is concentric with the permanent magnet, and is opposite into a radial direction with the permanent magnet. The stator yoke is concentric with the armature coil, and is integrated with the armature coil.
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