Armature core, armature, method for manufacturing armature core, and method for manufacturing armature
AssigneeAsmo Co., Ltd.
InventorsKazunobu KANNO, Kouichi NAKAMURA
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Abstract
An armature includes an armature core, a rotary shaft inserted into a shaft fixing hole of the armature core, and coils each wound about one of teeth of the armature core. The teeth extend radially. The armature core includes an inner core having the shaft fixing hole, and an outer core that is provided about and is integrated with the inner core. The inner core is formed by laminating a plurality of magnetic steel plates. The outer core is formed by compression molding magnetic powder, and includes the teeth. Accordingly, the armature core has a high mechanical strength and is capable of obtaining a high magnetic flux density. Also, the armature core is easy to manufacture.
Claims12
An armature core comprising:
- an inner core having a shaft fixing hole that permits insertion of a rotary shaft, the inner core being formed by laminating a plurality of magnetic steel plates;
- and
- an outer core being provided about and integrated with the inner core, the outer core being formed by compression molding magnetic powder, wherein the outer core includes a plurality of teeth extending radially, each tooth permitting a coil to be wound thereabout.
Dependencies are inferred from the claim text.