Method of manufacturing cores for rotary electric machines
First Claim
1. A manufacturing method of a core for rotary electric machines comprising:
- a step to compose a plurality of core segments by laminating core division sheets on which tees are formed; and
a step to form a magnetic circuit by composing a serial core segment assembly by coupling adjacent core segments with one another, bending the serial core segment assembly into an annular form so that yokes of all the adjacent core segments are brought into contact with one another and bringing yokes of core segments located at both ends of the serial core segment assembly into contact with each other.
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Abstract
A stator core which assures a favorable workability for coupling core segments and has favorable magnetic characteristics even when made by coupling core segments that are formed by laminating core division sheets. A method of manufacturing a core for rotary electric machines includes forming a coupling convexity having an arc-like planar shape and a coupling concavity engageable with the coupling convexity on core segments, forming a serial core segment assembly by engaging the coupling convexity on one of the core segments with the coupling concavity formed on an adjacent core segment so as to be rotatable by more than 180 degrees, and forming a magnetic circuit by bending the serial core segment assembly into an annular form.
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Citations
23 Claims
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1. A manufacturing method of a core for rotary electric machines comprising:
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a step to compose a plurality of core segments by laminating core division sheets on which tees are formed; and
a step to form a magnetic circuit by composing a serial core segment assembly by coupling adjacent core segments with one another, bending the serial core segment assembly into an annular form so that yokes of all the adjacent core segments are brought into contact with one another and bringing yokes of core segments located at both ends of the serial core segment assembly into contact with each other. - View Dependent Claims (2, 3, 4, 8, 9, 10, 14, 15, 16, 17, 18, 19, 20, 21, 23)
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5. A manufacturing method of a core for rotary electric machines comprising:
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a step to compose a plurality of core segments by laminating core division sheets on which tees are formed;
a step to mold resin on surfaces of the core segments except end surfaces of yokes;
a step to compose a serial core segment assembly by coupling adjacent core segments with one another;
a step to form a magnetic circuit by bending the serial core segment assembly into an annular form so that yokes of all the adjacent core segments are brought into contact with one another and bringing yokes of core segments located at both ends of the serial core segment assembly into contact with one another; and
a step to couple both the ends of the serial core segment assembly by welding the molded material at both the ends of the serial core segment assembly.
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6. A manufacturing method of a core for rotary electric machines comprising:
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a step to compose a plurality of core segments by laminating core division sheets on which tees are formed;
a step to compose a serial core segment assembly by coupling adjacent core segments with one another;
a step to mold resin on surfaces except end surfaces of yokes of the core segments of the serial core segment assembly;
a step to form a magnetic circuit by bending the serial core segment assembly into an annular form so that yokes of all the adjacent core segments are brought into contact with one another and bringing yokes of core segments located at both ends of the serial core segment assembly into contact with each other; and
a step to couple both the ends of the serial core segment assembly with each other by welding the molded material at both the ends of the serial core segment assembly.
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7. A manufacturing method of a core for rotary electric machines comprising:
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a step to compose a plurality of core segments by laminating core division sheets on which tees are formed;
a step to compose a serial core segment assembly by coupling adjacent core segments with one another;
a step to form a magnetic circuit by bending the serial core segment assembly into an annular form so that yokes of all the adjacent core segments are brought into contact with one another and bringing yokes of core segments located at both ends of the serial core segment assembly into contact with each other; and
a step to couple both the ends of the serial core segment assembly by molding resin on the serial core segment assembly bent in the annular form.
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11. A core for rotary electric machines having a magnetic circuit which is formed by composing a plurality of core segments by laminating core division sheets on which tees are formed, composing a serial core segment assembly by coupling adjacent core segments with one another, bending the serial core segment assembly into an annular form so that yokes of all the adjacent core segments are brought into contact with one another and bringing yokes of core segments located at both ends of the serial core segment into contact with each other,
wherein coupling portions for coupling the adjacent core segments with one another are formed on end surfaces of the yokes of the core segments over an entire region in a laminated direction of the core segments.
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12. A core for rotary electric machines having a magnetic circuit which is formed by composing a plurality of core segments by laminating core division sheets on which tees are formed, composing a serial core segment assembly by coupling adjacent core segment with one another, bending the serial core segment assembly so that yokes of all the adjacent core segments are brought into contact with one another and bringing yokes of core segments located at both ends of the serial core segment assembly into contact with each other,
wherein coupling portions for coupling the adjacent core segments are formed on end surfaces of the yokes within a partial region in a laminated direction of the core segments.
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22. A manufacturing method of a core for rotary electric machines comprising:
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a step to compose a plurality of core segments by laminating core division sheets on which tees are formed;
a step to compose a serial core segment assembly by coupling adjacent core segment with one another;
a step to mount an insulator made of resin on each of the core segments of the serial core segment assembly;
a step to form a magnetic circuit by bending the serial core segment assembly into an annular form so that yokes of all the adjacent core segment are brought into contact with one another and bringing yokes of core segments located at both ends of the serial core segment assembly into contact with each other; and
a step to couple both the ends of the serial core segment assembly with each other by welding the insulators located at both the ends of the serial core segment assembly
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Specification