Iron core and motor using iron core
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsYukio Nishikawa, Mitsuo Saitoh
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Abstract
An iron core including a laminate of a plurality of fixed electromagnetic steel sheets, a laminate of alloy thin strips which is sandwiched between the laminate of the electromagnetic steel sheets, a fastening mechanism which penetrates the laminates of electromagnetic steel sheets and alloy thin strips, and a fixing base. The laminate of alloy thin strips reduces compressive and torsional forces acting on the laminate of alloy thin strips by using the iron core having a structure in which upper and lower portions of a laminate of alloy thin strips having nanocrystal grains are sandwiched together with laminates of amorphous alloy thin strips. Furthermore, a motor including a rotor and the above-described iron core is used.
Claims9
An iron core comprising:
- laminates of a plurality of electromagnetic steel sheets;
- a laminate of alloy strips which is sandwiched between the laminates of the plurality of electromagnetic steel sheets;
- a fastening mechanism that penetrates the laminates of the plurality of electromagnetic steel sheets and alloy strips;
- and
- a fixing base, wherein
- the laminates of the plurality of electromagnetic steel sheets and the laminate of the alloy strips are fastened to the fixing base by the fastening mechanism,
- the laminates include a caulking part adjacent the fastening mechanism,
- a first surface of the laminates including the caulking part is recessed,
- a second surface of the laminates opposite the first surface and including the caulking part is flat, and
- a surface roughness of the second surface including the flat is higher than a surface roughness of other portions of the second surface.
An iron core, comprising:
- laminates of a plurality of electromagnetic steel sheets;
- a laminate of alloy strips including nanocrystal which is sandwiched between the laminates of the plurality of electromagnetic steel sheets;
- a fastening mechanism that penetrates the laminates of the plurality of electromagnetic steel sheets and alloy strips;
- and
- a fixing base, wherein
- upper and lower portions of the laminate of the alloy strips are sandwiched between a laminate of amorphous alloy strips,
- the laminate of the amorphous alloy strips has a same thickness and composition as the laminate of alloy strips, and
- the amorphous alloy strips has inferior magnetic properties than the alloy strips.
Dependencies are inferred from the claim text.