Concentrated winding coil and method of manufacturing same

• Main Authors: ISHIGAMI, TAKASHI, HIRAMATSU, HIROMICHI, NAGANAWA, TAKASHI
• Format: Patent
• Language: English; French; German
• Published: 18.06.2008
• Subjects: BASIC ELECTRIC ELEMENTS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERATION; INDUCTANCES; MAGNETS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TRANSFORMERS

A concentrated winding coil according to the present invention comprises a plurality of coil layers each of which comprises a plurality of wire turns wound in alignment winding; and a bobbin (1) comprising an inner flange (1-c), an outer flange (1-b) and a bobbin body (1-a) on which the wire (2) is wound, wherein: each of the coil layers includes a turn shift portion where the wire is shifted from an n-th turn to an (n+1)-th turn; the turn shift portion is located only on a side of a coil end section of the coil; and the bobbin body (1-a) has no guide grooves. Furthermore, a method of manufacturing the concentrated winding coil according to the present invention comprises steps of: winding the wire (2) on the bobbin (1); and pressing the wire by a wire guiding/holding member (3-a, 3-b) toward the inner flange (1-c) or toward the outer flange (1-b).