Axial Air Gap Type Electric Motor

摘要

The purpose of the present invention is to efficiently cope with the plate thickness deviation of a laminated iron core in an axial air gap type electric motor. An axial air gap type electric motor comprises: a stator formed by arranging stator cores around a rotating shaft in a ring shape, said stator cores each including a laminated iron core that is a prismatic body formed by laminating metal plate-like members in a radial direction of the rotating shaft, a tubular bobbin that has an inner diameter into which the laminated iron core is inserted, and a coil that is wound on the extension of the outer diameter of the laminated iron core; and at least one rotor plane-facing the rotating shaft direction end section of the stator with a predetermined air gap interposed therebetween. The laminated iron core includes: a portion (core member) formed by continuously laminating the metal plate-like members, the widths of which increase in a rotational direction of the rotating shaft from the rotating shaft center toward a radial direction; and a portion (core member) formed by continuously laminating the metal plate-like members, the widths of which are substantially equal.

主权项

1. An axial air gap type electric motor comprising: a stator formed by arranging, in a ring shape about a rotating shaft, stator cores each configured by a laminated iron core, as a prismatic body, made up of laminating metal plate-like members in a radial direction of the rotating shaft, a tubular bobbin having an inner diameter into which the laminated iron core is inserted, and a coil wound on the extension of the outer diameter of the laminated iron core; and at least one rotor plane-facing the cross section of a rotating-shaft direction end portion of the stator via a predetermined air gap,
wherein the laminated iron core is made up of: a portion formed by continuously laminating the metal plate-like members whose widths in the rotation direction of the rotating shaft are increased from the rotating shaft center in the radial direction; and a portion formed by continuously laminating the metal plate-like members whose widths in the rotation direction of the rotating shaft are substantially equal.