Core for rotary electric machine

A core for a rotary electric machine comprising a core segment linked body that is formed by linking a plurality of core segments that each include:

• a back yoke portion;
• and
• a magnetic pole tooth portion that protrudes from a central portion of the back yoke portion,
• wherein:
• each of the back yoke portions includes:
• a first end portion on which a pivot portion is disposed;
• and
• a second end portion;
• the first end portions of the back yoke portions are linked to the second end portions of the back yoke portions of adjacent core segments so as to be rotatable around the pivot portions;
• each of the core segments is configured by alternately laminating first core segment sheets and second core segment sheets;
• the pivot portions are constituted by a plurality of interfitting protruding portions that are formed on the first core segment sheets;
• the core segments are displaceable relative to the adjacent core segments between a contracted position in which spacing between the magnetic pole tooth portions is contracted, when the core segment linked body is opened out rectilinearly, and an expanded position in which spacing between the magnetic pole tooth portions is expanded, when the core segment linked body is opened out rectilinearly;
• and
• the interfitting protruding portions are retained in first interfitting apertures that are disposed on the second core segment sheets when the core segments are in the expanded position, and the interfitting protruding portions are retained in second interfitting apertures that are disposed on the second core segment sheets when the core segments are in the contracted position.