ROTARY ELECTRIC MACHINE AND METHOD FOR MOUNTING A COIL ON CORE FOR ROTARY ELECTRIC MACHINE

• US 20070284962A1
• Filed: 06/25/2007
• Published: 12/13/2007
• Est. Priority Date: 03/31/2004
• Status: Active Grant

• Current Assignee: Hiroshi Fukasaku, Kiyoshi Uetsuji, Taku Adaniya
• Original Assignee: Hiroshi Fukasaku, Kiyoshi Uetsuji, Taku Adaniya
• Inventors: Adaniya, Taku, Uetsuji, Kiyoshi, FUKASAKU, Hiroshi
• Granted Patent: US 7,683,517 B2
• Time in Patent Office: Days
• US Class Current: 310/180
• CPC Class Codes: H02K 15/0478 Wave windings, undulated windings when on diagonally wound hollow coils H02K15/0492
• CPC Class Codes: H02K 15/06 Embedding prefabricated windings in machines
• CPC Class Codes: H02K 15/085 by laying conductors into slotted stators
• CPC Class Codes: Y10T 29/49071 by winding or coiling
• CPC Class Codes: Y10T 29/49073 by assembling coil and core
• CPC Class Codes: Y10T 29/49169 Assembling electrical component directly to terminal or elongated conductor
• CPC Class Codes: Y10T 29/49194 Assembling elongated conductors, e.g., splicing, etc.
• CPC Class Codes: Y10T 29/49195 with end-to-end orienting

Abstract

A method for mounting coil onto stator for rotary electric machine. The method includes forming coil pieces by winding wire with flat cross section into single row lamination state including wire layers aligned along perpendicular line to flat surfaces of wire. The coil is formed for first portion to be inserted in slot and second portion not inserted in slot appear alternately along the coil. The method displaces wire layers at the first portion changing the single row lamination state to connectively laminated state where wire layers at portion to be inserted in slot each adjacent pair of the wire layers partially overlap with respect to direction perpendicular to flat wire surfaces. The method includes inserting wires of first portion into slot, passing each wire layer through slot opening successively from the top wire layer of lamination and displacing each wire layer at first portion from each other.

Claims

1. A rotary electric machine comprising:

a core having a plurality of slots; and

a coil piece mounted onto the core, wherein the coil piece is formed by repeatedly winding wire having a flat-cross-section so that the wire forms a plurality of wire layers that are laminated in a single row, wherein the coil piece has first portions each inserted into one of the slots and second portions that are not inserted into the slots, and wherein the first portions and the second portions are arranged alternately along a direction in which the wire extends,

wherein the wire layers in each first position are laminated while being aligned along a direction intersecting the depth of the corresponding slot.

2. The rotary electric machine according to claim 1, where the coil piece is one of plurality of coil pieces that are connected to each other with a connecting wire, and wherein each first portion of each coil piece is arranged in the same slot as that of the corresponding first portions of the other coil pieces.

3. The rotary electric machine according to claim 2, wherein each coil piece has at least three first portions.