Laminated core, laminated core manufacturing method, and electric motor

Provided is an electric motor using a laminated core in which punched electrical steel sheets are adhered to each other with a high adhesion strength. The laminated core includes: a plurality of electrical steel sheets which are stacked on each other and of which both surfaces are coated with an ins...

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Bibliographische Detailangaben
Hauptverfasser:	Fujii, Hiroyasu, Takatani, Shinsuke, Takeda, Kazutoshi
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE ADHESIVES BASIC ELECTRIC ELEMENTS CHEMISTRY COMPOSITIONS BASED THEREON CONVERSION OR DISTRIBUTION OF ELECTRIC POWER DYES DYNAMO-ELECTRIC MACHINES ELECTRICITY GENERATION INDUCTANCES LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM MAGNETS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PERFORMING OPERATIONS POLISHES SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSFORMERS TRANSPORTING USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS USE OF MATERIALS AS ADHESIVES
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Beschreibung
Zusammenfassung:	Provided is an electric motor using a laminated core in which punched electrical steel sheets are adhered to each other with a high adhesion strength. The laminated core includes: a plurality of electrical steel sheets which are stacked on each other and of which both surfaces are coated with an insulation coating; and an adhesion part which is disposed between the electrical steel sheets adjacent to each other in a stacking direction and adheres the electrical steel sheets to each other, wherein all sets of the electrical steel sheets adjacent to each other in the stacking direction are adhered to each other by the adhesion parts, wherein the adhesion parts are provided at a plurality of positions between the electrical steel sheets, and wherein the adhesion part is a layer made of an adhesive containing any one or both of an acrylic resin and an epoxy resin and having an SP value of 7.8 to 10.7 (cal/cm3)1/2.