Annular core piece and annular core
AssigneeMitsui High-Tec, Inc.
InventorsHirokazu Arakawa, Yusuke Hasuo
Life of this patent
Estimating the term…
Abstract
An annular core piece in which an annular core piece can be received inside a contour of an outer circumstance of the annular core piece and the number of recesses formed on the outer circumstance is small is provided. In an annular core piece including a plurality of recesses opened in an outer circumferential part, the recess includes a narrowed part and a raised part, and a transverse width of the narrowed part is made narrower than a transverse width of a different region present on a side of a bottom of the recess further beyond the narrowed part, and the raised part is formed such that a part of the bottom of the recess is raised and projected toward an opening end of the recess.
Claims9
An annular core piece, comprising:
- a recess opened in an outer circumferential part, wherein
- the recess includes:
- a bottleneck part, and
- a raised part;
- the recess is configured to engage with a protrusion of a laminating die at a time of laminating the annular core piece,
- a transverse width of the bottleneck part is made narrower than a transverse width of a different region present on a side of a bottom of the recess further beyond the bottleneck part,
- the raised part is a portion to be welded, and the raised part is formed such that a part of the bottom of the recess is raised and projected toward an opening end of the recess, and
- the raised part of respective annular core pieces that are adjacent in a lamination direction are mutually welded and coupled.
An annular core piece, comprising:
- a recess opened in an outer circumferential part, wherein
- the recess includes:
- a bottleneck part, and
- a raised part;
- a transverse width of the bottleneck part is made narrower than a transverse width of a different region present on a side of a bottom of the recess further beyond the bottleneck part,
- the raised part is formed such that a part of the bottom of the recess is raised and projected toward an opening end of the recess, and
- the raised part of respective annular core pieces that are adjacent in a lamination direction are mutually welded and coupled, wherein
- the recess includes a narrowed part that projects inwardly from sidewalls of the recess, the narrowed part having the bottleneck part, and
- at least a portion of the narrowed part faces sidewalls of the raised part.
Dependencies are inferred from the claim text.