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US 2011/0084569 A1Published application
Armature core
OwnerYoshinari Asano, Nobuyuki Kifuji +1inventors
InventorsYoshinari Asano, Nobuyuki Kifuji, Tomonori Kikuno
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Abstract
An armature core includes a back yoke and teeth. The teeth include a plurality of magnetic plates laminated along a lamination direction. The back yoke includes holes through which the teeth are inserted. The holes penetrate through a pair of surfaces of the back yoke. The back yoke and the plurality of magnetic plates are welded to each other at a point at which an edge of a boundary between the adjacent magnetic plates and a surface forming the hole are close to each other and any one of the pair of surfaces is exposed.
Claims38
An armature core, comprising:
- a first magnetic body including:
- a first surface and a second surface facing each other in a first direction parallel to a predetermined axis;
- and
- a third surface forming a plurality of holes penetrating through said first surface and said second surface in said first direction and circularly arranged around said axis;
- and
- a plurality of second magnetic bodies each including N magnetic plates laminated in a second direction perpendicular to said axis and respectively inserted through said plurality of holes,
- wherein, at least one k-th point at which an edge of a boundary surface between k-th and (k+1)th ones of said magnetic plates adjacent to each other in said second direction, where k represents a natural number between 1 and N−1, and said third surface are close to each other and are exposed on any one side of said first surface and said second surface, said k-th and said (k+1)th ones of said magnetic plates and said first magnetic body are welded to each other.
4 more elements
Dependencies are inferred from the claim text.