JP2012105442A - Rotor for rotary electric machines, and method of forming rotor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small-sized rotor for rotary electric machines which facilitates winding a coil around each slot, and to provide a method of forming the rotor.SOLUTION: A rotor 3 of an electric motor 1 is formed by attaching three split cores 33 at a uniform interval on a circumference of circle, at an outer periphery of a base member 32 integrally rotatable with a rotary shaft 31. The split core 33 is formed by winding an armature coil 332 around a split iron core 331 formed by laminating a plurality of split steel plates 331a in a rotation axis C direction. Respective triangular coupling parts 331d are notched on both end surfaces in a circumferential direction of the split iron core 331. Wedge-shaped junction projections 325 are formed on both end surfaces of a holding part 323 of the base member 32 located between adjacent split cores 33 and extending in a radial direction. After the armature coil 332 is wound around the split iron core 331, the junction projection 325 is press-fitted into the coupling part 331d to couple the split core 33 with the base member 32.

Description

  The present invention relates to a rotor of a rotating electrical machine including an electric motor and a generator, and a method for forming the rotor.

There has been a conventional technology related to a rotor of a motor in which a plurality of electromagnetic steel plates are laminated to form a rotor core and a plurality of coils are wound around the rotor core (see, for example, Patent Document 1 and Patent Document 2).
The prior art disclosed in Patent Document 1 is a two-pole three-slot motor, and because of the small number of poles on the stator side and the slots on the rotor side, field magnetic poles (permanent magnets), yokes and rotors The radial thickness of the yoke portion on the side increases, making it difficult to reduce the weight.
The prior art disclosed in Patent Document 2 is a 4-pole 5-slot motor, which is more effective in reducing the weight of the rotor compared to the prior art disclosed in Patent Document 1, but with respect to the rotor core. It is difficult to wind five coils at the same time, resulting in an increase in manufacturing cost.

Japanese Patent Laid-Open No. 7-194063 Japanese Patent Laid-Open No. 1-133551

  In general, when the number of slots in the rotor is increased, the slot interval on the circumference is reduced, and it is difficult to simultaneously wind a coil around each slot. That is, if it is going to wind a coil at the same time in the slot where the neighbors approached, the nozzle which guides a coil will mutually interfere. Further, if the coil is simultaneously wound around the slot, the winding equipment becomes complicated. In order to solve this problem, if the rotor diameter is increased, the entire motor is prevented from being reduced in size and weight.

In order to avoid the above-described problems, a method is conceivable in which a guide is inserted into the opening of each slot and the coil fed out from the nozzle is dropped along the guide so that the coil is wound around each slot. However, according to this method, since it is difficult to improve the positional accuracy of the coil dropped into the slot, the coil is unevenly wound. Therefore, the coil cannot be sufficiently wound in the slot, the coil space factor is lowered, and the motor efficiency is lowered.
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a rotor for a rotating electrical machine that is small and can be easily wound with a coil in each slot, and a method of forming the rotor.

  In order to solve the above-described problem, the structure of the rotor of the rotating electrical machine according to claim 1 is a rotor of the rotating electrical machine rotatably attached to the housing, and each of the core plates has a plurality of core plates in the rotation axis direction. Stacked to form an iron core, a plurality of core bodies formed by winding coils around the iron core are provided, and the plurality of core bodies are connected to each other in a state of being arranged on the circumference around the rotation axis It was formed.

  According to a second aspect of the present invention, in the rotor of the rotating electric machine according to the first aspect, the plurality of core bodies are connected by press-fitting to a central member that is rotatably attached to the housing.

  According to a third aspect of the present invention, in the rotor of the rotating electric machine according to the second aspect, the plurality of core bodies are attached to the outer periphery of the central member so as to be equidistant on the circumference.

  According to a fourth aspect of the invention, there is provided a method for forming a rotor of a rotating electrical machine, wherein a plurality of core plates are laminated to form an iron core, and a coil is wound around the iron core to form a plurality of core bodies. It is connecting a core body mutually in the state arrange | positioned on the circumference.

According to the rotor of the rotating electrical machine according to claim 1, the plurality of core bodies around which the coil is wound are connected to each other in a state of being arranged on the circumference around the rotation shaft. Since the coil can be wound around each core body separated from each other, the coil can be easily wound around the core body, and the manufacturing process and manufacturing equipment can be simplified.
Moreover, since a coil can be simultaneously wound with respect to a some core body, the manufacturing cost of a rotor can be reduced significantly.
Further, since the coil can be easily wound, it is possible to increase the number of slots of the rotor and the number of fixed poles, and to reduce the thickness of the field magnetic pole, the yoke and the rotor in the radial direction.
In addition, since the coils can be aligned and sufficiently wound, the efficiency of the rotating electrical machine can be improved.

  According to the rotor of the rotating electrical machine according to claim 2, the core bodies can be easily connected to each other by being press-fitted to the central member that is rotatably attached to the housing. Each core body can be firmly held against the centrifugal force accompanying the rotation of the rotor.

  According to the rotor of the rotating electrical machine according to claim 3, by attaching a plurality of core bodies at equal intervals on the circumference with respect to the outer periphery of the central member, the positional accuracy of each core body with respect to the rotation axis is improved. Can be improved.

According to the method for forming a rotor of a rotating electrical machine according to claim 4, each core body is formed by connecting a plurality of core bodies wound with coils to each other in a state of being arranged on the circumference. Since the coil can be wound around the core body, the coil can be easily wound around the core body.
Moreover, since a coil can be simultaneously wound with respect to a some core body, the manufacturing cost of a rotor can be reduced significantly.
In addition, since the coils can be aligned and sufficiently wound, the efficiency of the rotating electrical machine can be improved.

Sectional drawing at the time of cutting the electric motor by Embodiment 1 of this invention in the surface perpendicular | vertical to a rotating shaft Sectional drawing of the rotor contained in the electric motor shown in FIG. Sectional view showing one of the split cores shown in FIG. FIG. 3A is a simplified diagram illustrating a process of forming the rotor illustrated in FIG. 2, and illustrates a process of punching a laminated steel plate from a plate material and a process of forming a split iron core and a base member by stacking the laminated steel sheets. Figure (b) The figure which showed the process of winding a coil around a split iron core, and the figure which showed the process of press-fitting a split core into a base member (b) Sectional drawing of the rotor by Embodiment 2 Sectional view showing one of the split cores shown in FIG. Sectional view of rotor according to embodiment 3 Sectional view showing one of the split cores shown in FIG. Sectional view of rotor according to embodiment 4 Sectional view showing one of the split cores shown in FIG. Sectional drawing of the rotor by Embodiment 5 Sectional drawing which showed one of the division | segmentation cores shown in FIG.

<Embodiment 1>
Based on FIG. 1 thru | or FIG. 5, the rotor 3 of the electric motor 1 by Embodiment 1 of this invention is demonstrated.
In the description, the direction of the rotational axis or the axial direction means a direction along the rotational axis C of the electric motor 1, that is, a direction perpendicular to the paper surface in FIG.

The electric motor 1 (corresponding to a rotating electrical machine) according to the present embodiment is a 4-pole 3-slot DC motor.
As shown in FIG. 1, the yoke 21 (corresponding to the housing) is formed in a substantially cylindrical shape by, for example, a rolled steel plate, and two pairs of field magnetic poles 22a and 22b are fixed to the inner peripheral surface thereof. The field magnetic poles 22a and 22b are both formed in an arch shape by permanent magnets, and are arranged on a circumference around the rotation axis C.

  The pair of field magnetic poles 22a are mounted on the inner peripheral surface of the yoke 21 at positions facing each other across the rotation axis C (being point-symmetric), and the inner peripheral side is an N pole and the outer peripheral side is an S pole. Is formed. On the other hand, the other pair of field magnetic poles 22b are mounted on the inner peripheral surface of the yoke 21 at positions facing each other across the rotation axis C (being point-symmetric), like the field magnetic poles 22a. The inner peripheral side is formed as an S pole and the outer peripheral side is formed as an N pole. Further, the adjacent field magnetic poles 22a and 22b are equally arranged so that their circumferential centers form an angle of 90 degrees with each other. The stator 21 is constituted by the yoke 21 and the field magnetic poles 22a and 22b described above.

Both end portions of the yoke 21 in the axial direction are sealed with end walls (not shown), and the rotating shaft 31 of the rotor 3 is centered on the rotating shaft C via a bearing (not shown) on the opposite end walls. It is attached to be rotatable.
A base member 32 is fixed to the rotary shaft 31 so as to cover the periphery in the radial direction. The base member 32 is formed by stacking a plurality of central steel plates 32a formed in the same shape from electromagnetic steel plates in the direction of the rotation axis C and then crimping them (shown in FIG. 4B). The plurality of central steel plates 32a can be joined to each other by an adhesive or laser welding. Alternatively, one or a plurality of protrusions (dowels) are formed on each of the plurality of laminated steel plates 32a, and the dowels formed on the other side are formed on the concave side of the dowels formed on one of the central steel plates 32a stacked on each other. It can also join by what is called dowel crimping, after making the convex part side fit.

The base member 32 has a fixing hole 321 that is press-fitted into the rotary shaft 31 at the center, and extends substantially outward from the mounting portion 322 in the radial direction when viewed in the direction of the rotation axis C. The three holding portions 323 are provided. The holding portions 323 are formed at equal intervals every 120 degrees on the outer peripheral surface of the mounting portion 322, and a core housing space 324 in which a divided core 33 described later is disposed is formed between the adjacent holding portions 323. ing. On both end faces in the circumferential direction of the holding portion 323, wedge-shaped joint protrusions 325 that are fitted to the divided cores 33 protrude. In addition, on the outer peripheral surface of the mounting portion 322, three coil housing portions 326 for housing a portion on the inner diameter side of an armature coil 332 described later are formed at equal intervals in the circumferential direction.
The configuration including the rotary shaft 31 and the base member 32 corresponds to the central member of the present invention, and the rotor 3 is formed by adding a split core 33 to them.

  As shown in FIG. 1, the plurality of divided cores 33 (corresponding to the core body of the present invention) are formed with the same configuration, and are equally spaced on the circumference with respect to the outer periphery of the mounting portion 322 of the base member 32. It is attached to become. Each split core 33 is formed by winding an armature coil 332 (corresponding to the coil of the present invention) around a split iron core 331 (corresponding to the iron core of the present invention) (shown in FIG. 3).

  The split iron core 331 is formed by stacking split steel plates 331a (corresponding to the core plate of the present invention) formed in the same shape by electromagnetic steel plates in the direction of the rotation axis C by the same number as that of the base member 32, and then crimping them. It is formed (shown in FIG. 4B). The plurality of divided steel plates 331a can be joined to each other by an adhesive, laser welding, or dowel crimping. When viewed from the direction of the rotation axis C, the divided iron core 331 is formed in a substantially fan shape, and a notch 331b that opens outward in the radial direction is provided at the center of the outer peripheral surface in the circumferential direction. As a result, a bridge portion 331c is formed inward in the radial direction with respect to the notch portion 331b.

The armature coil 332 is wound around the bridge portion 331c in the radial direction (vertical direction in FIG. 3), and the armature coil 332 is held in the notch portion 331b and the coil housing portion 326 of the base member 32 described above. In addition, triangular connection portions 331 d that fit into the joint protrusions 325 of the base member 32 are cut out at both circumferential end surfaces of the split iron core 331.
The plurality of divided cores 33 around which the armature coils 332 are wound are arranged in the core housing space 324 of the base member 32 so as to be equally spaced on the circumference around the rotation axis C. It is connected.

  As shown in FIG. 2, a plurality of commutators 333 are provided on the circumference at one end of the rotor 3 in the axial direction. A pair of end portions of each armature coil 332 wound around the split iron core 331 is connected to each commutator 333 described above. The commutator 333 is in contact with a pair of brushes 23 at positions at 90 degrees on the circumference. Further, as shown in FIG. 2, the end portions of the armature coil 332 are connected to each other at positions facing each other across the rotation axis C, so that the brush described above is connected. The number of 23 is reduced.

In the electric motor 1, when a direct current is supplied to the armature coil 332 from the outside via the brush 23, the rotor 3 is centered on the rotation axis C by the electromagnetic force generated between the magnetic poles 22 a and 22 b. Rotate in one direction.
Further, the current supplied to the armature coil 332 generates a magnetic flux at a portion around the holding portion 323 of the base member 32 located between the adjacent armature coils 332 (indicated by MF in FIG. 2). ), The portion centered on the holding portion 323 functions as a deemed pole or induction pole. For this reason, the electric motor 1 functions as a 4-pole 6-slot DC motor, and the rotor 3 can be smoothly rotated.

Next, a method for forming the rotor 3 will be described with reference to FIGS. 4 and 5.
First, the divided steel plates 331a and the central steel plate 32a are punched out from the plate materials 8a and 8b formed of electromagnetic steel plates and having the same thickness, by a pressing process (shown in FIG. 4A). When doweling is performed, dowels are simultaneously formed on the divided steel plates 331a and the central steel plate 32a in this pressing step.
Next, the same number of the divided steel plates 331a and the central steel plates 32a laminated are press-bonded and joined by adhesive, laser welding, or dowel staking. Thereby, the divided iron core 331 and the base member 32 are formed (shown in FIG. 4B).

Next, the conductive wire CW to be the armature coil 332 is wound around the three divided iron cores 331 simultaneously (only one is shown in FIG. 5A). The split core 33 around which the armature coil 332 is wound is press-fitted in the direction of the rotation axis C with respect to the base member 32 (shown in FIG. 5B), and the plurality of split cores 33 are connected to each other via the base member 32. Is done. At this time, since the divided steel plate 331a and the central steel plate 32a are laminated by the same number, the overlapping state of the steel plates 331a and 32a is completely between the divided iron core 331 and the base member 32. Match. When connecting the split core 33 to the base member 32, the joint protrusion 325 of the base member 32 is press-fitted into the connecting portion 331 d of the split iron core 331.
In addition, when the armature coil 332 is wound around the split iron core 331, it may be wound one by one instead of simultaneously with all the split iron cores 331.

  According to the present embodiment, the plurality of split cores 33 around which the armature coil 332 is wound are connected to each other in a state of being arranged at equal intervals on the circumference around the rotation axis C. As a result, the armature coil 332 can be wound around each of the split cores 331 separated from each other, and therefore the armature coil 332 can be easily wound around the split core 331. The manufacturing process and manufacturing equipment can be simplified.

In addition, since the armature coil 332 can be wound around the plurality of divided iron cores 331 at the same time, the manufacturing cost of the rotor 3 can be significantly reduced.
Further, since the armature coil 332 can be easily wound, the number of slots of the rotor 3 and the number of fixed magnetic poles can be increased, and the field magnetic poles 22a and 22b, the yoke 21 and the rotor 3 are thin in the radial direction. Can be realized.
In addition, since the armature coil 332 can be aligned and wound sufficiently, the efficiency of the electric motor 1 can be improved.

In addition, since the plurality of split cores 33 are connected to the base member 32 by press-fitting, the split cores 33 can be easily connected to each other, and each of the split cores 33 can resist each centrifugal force accompanying the rotation of the rotor 3. The split core 33 can be firmly held.
Further, by attaching the plurality of divided cores 33 to the base member 32 so as to be equidistant on the circumference, the positional accuracy of each divided core 33 with respect to the rotation axis C can be improved.

<Embodiment 2>
Based on FIGS. 6 and 7, the rotor 4 according to the second embodiment of the present invention will be described focusing on the differences from the first embodiment. The rotor 4 is a three-slot rotor. The base member 41 of the rotor 4 (corresponding to the central member of the present invention) is formed by laminating a plurality of central steel plates 41a formed in the same shape by electromagnetic steel plates in the direction of the rotation axis C.

The base member 41 has a fixing hole 411 into which the rotary shaft 31 is press-fitted at the center, and a plurality of core housing spaces 412 opened radially outward are provided on the outer circumferential surface at intervals of 120 degrees on the circumference. It is formed at intervals. A trapezoidal connecting portion 413 that fits with each of the divided cores 42 to be described later is cut out at both end faces in the circumferential direction of the core housing space 412 that is substantially rectangular when viewed in the direction of the rotation axis C. .
Further, a split slit 414 is formed on the outer peripheral surface of the base member 41 so as to be positioned between adjacent core housing spaces 412. The division slit 414 is provided for the purpose of preventing the passage of magnetic flux at that position.

  As shown in FIG. 6, the plurality of divided cores 42 (corresponding to the core body of the present invention) are formed with the same configuration, and are equally spaced on the circumference with respect to the outer periphery of the base member 41. It is attached. Each split core 42 is formed by winding an armature coil 422 (corresponding to the coil of the present invention) around a split iron core 421 (corresponding to the iron core of the present invention) (shown in FIG. 7).

The divided iron core 421 is formed by laminating the same number of divided steel plates 421a (corresponding to the core plate of the present invention) formed in the same shape by electromagnetic steel plates in the direction of the rotation axis C as in the case of the base member 41. The split iron core 421 includes a coil winding portion 421b that is rectangular when viewed in the direction of the rotation axis C, and a pair of trapezoidal joint protrusions 421c that protrude from both ends of the coil winding portion 421a.
An armature coil 422 is wound around the coil winding portion 421b in the radial direction (vertical direction in FIG. 7), and the armature coil 422 is held in the core housing space 412.

  The plurality of split cores 42 each wound with the armature coil 422 are arranged in the core housing space 412 so as to be equally spaced on the circumference with the rotation axis C as a center, with the base member 51 interposed therebetween. Are connected to each other. When the split core 42 is connected to the base member 41, the joint protrusion 421 c of the split iron core 421 is press-fitted into the connecting portion 413 of the base member 41.

<Embodiment 3>
Based on FIGS. 8 and 9, the rotor 5 according to the third embodiment of the present invention will be described focusing on differences from the first embodiment. The rotor 5 is a 3-slot rotor. A base member 51 (corresponding to the center member of the present invention) formed by laminating a plurality of electromagnetic steel plates in the direction of the rotation axis C has a fixing hole 511 into which the rotation shaft 31 is press-fitted at the center, and is formed on the outer peripheral surface. A plurality of core receiving spaces 512 opened radially outward are formed at equal intervals on the circumference. A trapezoidal connecting portion 513 that fits with the split core 52 described later is cut out on the bottom surface of the core accommodating space 512 that is substantially rectangular when viewed in the direction of the rotation axis C.
Further, as shown in FIG. 8, an extending portion 514 extending in the radial direction is formed between the core housing spaces 512.

  As shown in FIG. 8, the plurality of divided cores 52 (corresponding to the core body of the present invention) are formed by the same configuration, and are equally spaced on the circumference with respect to the outer periphery of the base member 51. It is attached. Each split core 52 is formed by winding an armature coil 522 around a split iron core 521 (corresponding to the iron core of the present invention) (shown in FIG. 9).

A divided iron core 521 formed by laminating a plurality of electromagnetic steel plates in the direction of the rotation axis C is joined to a tooth portion 521a having a rectangular shape when viewed in the direction of the rotation axis C, and the radially outer end of the teeth portion 521a. A back yoke portion 521b extending in the circumferential direction and a trapezoidal joint protrusion 521c protruding inward in the radial direction from the tooth portion 521a are configured.
A bobbin 523 formed of a synthetic resin material is attached to the teeth portion 521a. An armature coil 522 (corresponding to the coil of the present invention) is wound around the teeth portion 521a in a circumferential direction (left and right in FIG. 9) via a bobbin 523, and the armature coil 522 is placed in the core housing space 512. Retained.

The plurality of split cores 52 around which the armature coils 522 are wound are arranged in the core housing space 512 so as to be equally spaced on the circumference around the rotation axis C, with the base member 51 interposed therebetween. Are connected to each other. When the split core 52 is connected to the base member 51, the joint protrusion 521 c of the split iron core 521 is press-fitted into the connecting portion 513 of the base member 51.
When a direct current is supplied to the armature coil 522 from the outside, a magnetic flux is also generated in the extending portion 514 of the base member 51 located between the adjacent armature coils 522 due to the current supplied to the armature coil 522. The extending portion 514 functions as a deemed electrode or an induction electrode.

<Embodiment 4>
Based on FIGS. 10 and 11, the rotor 6 according to the fourth embodiment of the present invention will be described focusing on differences from the first embodiment. The rotor 6 is a three-slot rotor. A base member 61 (corresponding to the center member of the present invention) formed by laminating a plurality of electromagnetic steel plates in the direction of the rotation axis C has a fixing hole 611 into which the rotation shaft 31 is press-fitted at the center, and rotates. When viewed in the direction of the axis C, it is almost circular.
On the outer peripheral surface of the base member 61, a plurality of connecting portions 612 in which a pair of wedge shapes are continuously formed are cut out at equal intervals on the circumference.

  As shown in FIG. 10, the plurality of divided cores 62 (corresponding to the core body of the present invention) are formed by the same configuration, and are equally spaced on the circumference with respect to the outer periphery of the base member 61. It is attached. Each split core 62 is formed by winding an armature coil 622 (corresponding to the coil of the present invention) around a split iron core 621 (corresponding to the iron core of the present invention) (shown in FIG. 11).

A split iron core 621 formed by laminating a plurality of electromagnetic steel plates in the direction of the rotation axis C is joined to the teeth 621a having a rectangular shape when viewed in the direction of the rotation axis C, and radially outward of the teeth 621a. It is comprised from the outer peripheral part 621b extended in the circumferential direction, and a pair of joining protrusion 621c which protruded inward in the radial direction from the teeth part 621a.
An armature coil 622 is wound around the tooth portion 621 a in the circumferential direction (left-right direction in FIG. 11), and the armature coil 622 is held on the outer peripheral surface of the base member 61.

  The plurality of split cores 62 each wound with the armature coil 622 are arranged at equal intervals on the outer peripheral surface of the base member 61 with the rotation axis C as the center, with the base member 61 interposed therebetween. Are connected to each other. When connecting the split core 62 to the base member 61, the joint protrusion 621 c of the split iron core 621 is press-fitted into the connecting portion 612 of the base member 61.

<Embodiment 5>
Based on FIGS. 12 and 13, the rotor 7 according to the fifth embodiment of the present invention will be described focusing on differences from the first embodiment. The rotor 7 is a three-slot rotor. The rotor 7 has an armature coil 722 (corresponding to the coil of the present invention) wound around a split iron core 721 (corresponding to the iron core of the present invention) formed by laminating a plurality of electromagnetic steel plates in the rotation axis C direction. By rotating, three divided cores 72 are formed, and these divided cores 72 are connected to each other. Therefore, the rotor 7 does not include a base member, unlike the first to fourth embodiments described above.

As shown in FIG. 12, the plurality of divided cores 72 (corresponding to the core body of the present invention) are formed by the same configuration, and are arranged at equal intervals on the circumference around the rotation axis C. Has been.
The split iron core 721 includes a tooth portion 721a that is rectangular when viewed in the direction of the rotation axis C, an outer peripheral portion 721b that is joined radially outward of the tooth portion 721a and extends in the circumferential direction, and a radius from the tooth portion 721a. It is comprised from the substantially fan-shaped connection part 721c extended in the direction inward.

An armature coil 722 is wound around the tooth portion 721a in the circumferential direction (left-right direction in FIG. 13), and the armature coil 722 is held between the outer peripheral portion 721b and the connection portion 721c.
In each connection portion 721c, a pair of joining projections 721d having a trapezoidal shape when viewed in the direction of the rotation axis C is formed on one end surface in the circumferential direction. In addition, a pair of connecting portions 721e that can be fitted to the joint protrusions 721d are cut out on the other end surface in the circumferential direction of the connecting portion 721c.

  The plurality of divided cores 72 around which the armature coils 722 are wound are connected to each other in a state of being arranged at equal intervals on the circumference around the rotation axis C. When the divided cores 721 are connected to each other, the joint protrusion 721d is press-fitted into the connecting portion 721e. By connecting the three divided cores 72 to each other, a fixing hole 71 into which the rotary shaft 31 is press-fitted is formed at the center (shown in FIG. 12).

<Other embodiments>
The present invention is not limited to the above-described embodiments, and can be modified or expanded as follows.
The present invention is not limited to a 4-pole 3-slot DC motor, and the number of poles of the field magnetic poles of the stator 2 may be 3 or less, or 5 or more, and the number of slots in the rotor 3 may be 2 or 4 or more. The present invention can also be applied to a synchronous motor, an induction motor, or any other rotating electric machine. The electric motor 1 according to the present invention may be applied to either an electric motor or a generator.

Further, the shape of the press-fit portion between the base member 32 and the split iron core 331 is not limited to that according to the above-described embodiment, and the fastening strength of the press-fit portion that resists the centrifugal force generated by the rotation of the rotor 3 is sufficient. Any shape can be used as long as it is secured.
Further, the plurality of divided cores 33 are not necessarily arranged at equal intervals on the circumference around the rotation axis C.

  In the drawings, 1 is an electric motor (rotary electric machine), 2 is a stator, 3 is a rotor, 21 is a yoke (housing), 31 is a rotating shaft (center member), and 32, 41, 51 and 61 are base members (center member). , 33, 42, 52, 62, 72 are divided cores (core bodies), 331a, 421a are divided steel plates (core plates), 332, 422, 522, 622, 722 are armature coils (coils), 331, 421, Reference numerals 521, 621, and 721 denote divided iron cores (iron cores), and C denotes a rotating shaft.

Claims (4)

A rotor of a rotating electric machine rotatably attached to a housing,
A plurality of core plates are respectively laminated in the rotation axis direction to form an iron core, and a plurality of core bodies formed by winding a coil around the iron core are provided,
A rotor of a rotating electrical machine formed by connecting a plurality of the core bodies to each other in a state of being arranged on a circumference around the rotation shaft.   The rotor of a rotating electrical machine according to claim 1, wherein the plurality of core bodies are connected by press-fitting to a central member that is rotatably attached to the housing.   The rotor of a rotating electrical machine according to claim 2, wherein the plurality of core bodies are attached to the outer periphery of the central member so as to be equidistant on the circumference. A plurality of core plates are laminated to form an iron core, and a coil is wound around the iron core to form a plurality of core bodies,
A method of forming a rotor of a rotating electrical machine in which a plurality of the core bodies are connected to each other in a state of being arranged on a circumference.

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