Dynamoelectric rotor

1. A dynamoelectric rotor comprising:

a pole core having:

a boss portion;

yoke portions that are respectively disposed so as to extend radially outward from two axial end edge portions of said boss portion; and

a plurality of claw-shaped magnetic pole portions that are disposed so as to extend axially from outer circumferential portions of said yoke portions so as to intermesh with each other alternately;

a bobbin having:

a drum portion;

a pair of disk-shaped flange portions that are disposed so as to extend radially outward from first and second edge portions of said drum portion; and

an output wire securing portion that is disposed so as to extend radially outward from one of said disk-shaped flange portions, said bobbin being housed in a coil housing space that is surrounded by said boss portion, said yoke portions, and said claw-shaped magnetic pole portions by fitting said drum portion over said boss portion:

a field coil that is wound on said bobbin housed in said coil housing space by winding a winding start end thereof onto said output wire securing portion, winding on said drum portion, and winding a winding finish end thereof onto said output wire securing portion;

a shaft that is inserted through a central axial position of said boss portion and that supports said pole core so as to be unable to rotate relatively;

an annular body that is made of an insulating resin, that is fixed to a portion of said shaft projecting outward at a first end of said pole core, and that has a radially-projecting flange portion at an end near said pole core;

a pair of slip rings that are fixed to outer circumferential portions of said annular body so as to be separated axially; and

a pair of connecting terminals that are disposed on said annular body such that first ends are respectively connected to said pair of slip rings and second ends project radially outward from said radially-projecting flange portion,

wherein said coil winding start end and winding finish end of said field coil are led out toward said annular body from said output wire securing portion within a range that is less than or equal to one magnetic pole pitch circumferentially, and respectively connected to projecting portions of said pair of connecting terminals.

2. A dynamoelectric rotor comprising:

a pole core having:

a boss portion;

yoke portions that are respectively disposed so as to extend radially outward from two axial end edge portions of said boss portion; and

a plurality of claw-shaped magnetic pole portions that are disposed so as to extend axially from outer circumferential portions of said yoke portions so as to intermesh with each other alternately;

a field coil that is housed in a coil housing space that is surrounded by said boss portion, said yoke portions, and said claw-shaped magnetic pole portions;

a shaft that is inserted through a central axial position of said boss portion and that supports said pole core so as to be unable to rotate relatively;

an annular body that is made of an insulating resin, that is fixed to a portion of said shaft projecting outward at a first end of said pole core, and that has a radially-projecting flange portion at an end near said pole core;

a pair of slip rings that are fixed to outer circumferential portions of said annular body so as to be separated axially; and

a pair of connecting terminals that are disposed on said annular body such that first ends are respectively connected to said pair of slip rings and second ends project radially outward from said flange portion,

wherein a coil winding start end and winding finish end of said field coil are led out toward said annular body from said coil housing space within a range that is less than or equal to one magnetic pole pitch circumferentially, and respectively connected to projecting portions of said pair of connecting terminals, and

wherein said coil winding start end and winding finish end of said field coil are led out through a same valley portion between circumferentially-adjacent claw-shaped magnetic pole portions.

3. A dynamoelectric rotor comprising:

a pole core having:

a boss portion;

yoke portions that are respectively disposed so as to extend radially outward from two axial end edge portions of said boss portion; and

a plurality of claw-shaped magnetic pole portions that are disposed so as to extend axially from outer circumferential portions of said yoke portions so as to intermesh with each other alternately;

a field coil that is housed in a coil housing space that is surrounded by said boss portion, said yoke portions, and said claw-shaped magnetic pole portions;

a shaft that is inserted through a central axial position of said boss portion and that supports said pole core so as to be unable to rotate relatively;

an annular body that is made of an insulating resin, that is fixed to a portion of said shaft projecting outward at a first end of said pole core, and that has a radially-projecting flange portion at an end near said pole core;

a pair of slip rings that are fixed to outer circumferential portions of said annular body so as to be separated axially; and

a pair of connecting terminals that are disposed on said annular body such that first ends are respectively connected to said pair of slip rings and second ends project radially outward from said flange portion,

wherein a coil winding start end and winding finish end of said field coil are led out toward said annular body from said coil housing space within a range that is less than or equal to one magnetic pole pitch circumferentially, and respectively connected to projecting portions of said pair of connecting terminals, and

wherein said coil winding start end and winding finish end of said field coil are led out through a same coil lead aperture that is disposed through said pole core near a root of a claw-shaped magnetic pole portion.

4. A dynamoelectric rotor according to claim 1 , wherein the number of magnetic poles in said pole core is greater than or equal to twelve poles.