Stator unit of flat motor
AssigneeMinebea Co., Ltd.
InventorsYuzuru Suzuki, Sakae Fujitani, Masaaki Inagaki
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Abstract
During the assembly of a small motor, insulation is installed on the outer surface of a magnetic pole. An armature coil is wound so that the wire does not touch the corners of the magnetic pole. The wound coil does not loosen and sufficient insulation for the armature coil and magnetic pole gap can be secured when the assembly is completed. This allows as much ampere turn of the armature coil as possible to be obtained. Moreover, the thickness of the motor can be made flatter resulting in easier assembly of the flat motor's stator.
Claims7
A stator unit with a flat motor, an armature coil is wound on a plurality of magnetic poles arranged protrusively in a circular shape from a ring-shaped yoke made of a strongly magnetized material, comprising:
- a stator core;
- insulation layers, formed by an insertion mold process, including a winding of said stator core of the magnetic poles on both sides of said stator core, said insulation layers having a thin portion formed on top and bottom middle portions of the magnetic poles and having a portion, thicker than the thin portion, formed on both sides of the magnetic poles.
Dependencies are inferred from the claim text.