Mitsubishi Electric Corporation

Kazunori Muto

Atsushi Sakaue

Tatsuro Hino

Akira Hashimoto

Hironori Tsuiki

Hiroyuki Akita

Masashi Nakamura

Kohei Egashira

Shinkichi Sawa

Hiroyuki Yasuda

Akihiro Yamamura

Yoshihiro Harada

Shuichi Tamura

Tetsuya Yokogawa

Aiko Nakano

A manufacturing method for a stator winding coil includes: a bulging portion forming step that forms a bulging portion on a conductor wire; a crank portion forming step that forms a crank portion on the central portion of the bulging portion; an oblique portion forming step that forms oblique portions on the conductor wire at two ends of the bulging portion; a rectilinear portion forming step that forms rectilinear portions on the conductor wire at opposite ends of the oblique portions from the bulging portion; and a circular arc forming step that forms the oblique portions into a circular arc shape after forming the rectilinear portions.

Manufacturing method for stator winding coil

A tooth groove is provided at a border portion between a tooth body portion and a protrusion. The angle between a tooth body portion lateral face which is a lateral face in the circumferential direction of the tooth body portion and a tooth body portion stop portion which is a face, of the tooth groove, continued from the tooth body portion lateral face is the right angle or an acute angle. The protrusion is rotated toward the outer side in the circumferential direction, to bring a protrusion stop portion into close contact with the tooth body portion stop portion, the protrusion stop portion being an outer-circumferential-side lateral face of the protrusion, thereby forming a shoe in a tooth.

Method for manufacturing strator, method for manufacturing rotary electric machine, and iron-core block

Coils that constitute an armature winding are produced by winding a conductor wire that has a rectangular cross section, the coils each include: four rectilinear portions that are inserted into a pair of slots; and three coil end portions that link the four rectilinear portions consecutively by each connecting together end portions of two selected rectilinear portions, the coils being mounted into the armature core so as to be arranged at a pitch of one slot in a circumferential direction, the coil end portions include: a bulging portion that protrudes axially outward in a convex shape; and oblique portions that link the two connected rectilinear portions and the bulging portion, the bulging portion has a crank portion that displaces radial positions of the two connected rectilinear portions by a set amount, and a cross-sectional area of the bulging portion is smaller than a cross-sectional area of the oblique portions.

Rotary electric machine and manufacturing method for coil of rotary electric machine

In a rotary electric machine according to the present invention, an armature winding includes a plurality of distributed winding bodies that are each produced by winding a single conductor wire that is insulated, that is jointless and continuous, and that has a constant cross-sectional area perpendicular to a longitudinal direction, the conductor wires include first through third coil end portions that link first through fourth rectilinear portions and first through fourth rectilinear portions, and are formed such that radial widths w' of the first through fourth rectilinear portions are wider than radial widths w of the first through third coil end portions.

Rotary electric machine and manufacturing method therefor

A radially outer insulating paper includes: an annular radially outer insulating paper base portion that is disposed on a radially inner side of a row of first coil terminals; and radially outer insulating paper protruding portions that each protrude radially outward from an axially outer end portion of the radially outer insulating paper base portion, and that are inserted between adjacent first coil terminals axially further outward than second bent portions; and a radially inner insulating paper includes: an annular radially inner insulating paper base portion that is disposed on a radially outer side of a row of second coil terminals; and radially inner insulating paper protruding portions that each protrude radially inward from an axially outer end portion of the radially inner insulating paper base portion, and that are inserted between adjacent second coil terminals axially further outward than fourth bent portions.

Rotary electric machine and a manufacturing method thereof

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Tokyo, Japan

Kazunori Muto