WO2015173932A1 - Rotating electric machine armature iron core and armature manufacturing method - Google Patents

Rotating electric machine armature iron core and armature manufacturing method Download PDF

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Publication number
WO2015173932A1
WO2015173932A1 PCT/JP2014/062978 JP2014062978W WO2015173932A1 WO 2015173932 A1 WO2015173932 A1 WO 2015173932A1 JP 2014062978 W JP2014062978 W JP 2014062978W WO 2015173932 A1 WO2015173932 A1 WO 2015173932A1
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Prior art keywords
back yoke
magnetic pole
circumferential direction
piece
armature core
Prior art date
Application number
PCT/JP2014/062978
Other languages
French (fr)
Japanese (ja)
Inventor
隆司 梅田
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to CN201480079030.4A priority Critical patent/CN106464040B/en
Priority to JP2016519056A priority patent/JP6250149B2/en
Priority to PCT/JP2014/062978 priority patent/WO2015173932A1/en
Publication of WO2015173932A1 publication Critical patent/WO2015173932A1/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures

Definitions

  • the present invention relates to an armature core of a rotating electric machine such as an electric motor or a generator and a method for manufacturing the armature, and more particularly to an iron core structure capable of improving the productivity of the armature core and the operating characteristics of the rotating electric machine.
  • an armature core is configured by connecting a plurality of substantially T-shaped split laminated cores each having a split yoke part and a magnetic pole tooth part in an annular shape.
  • Each divided laminated core has a divided yoke portion and a magnetic pole tooth portion, and includes first and second divided core pieces that are stacked and joined to each other, and the divided yoke portion and the second divided core piece of the first divided core piece.
  • the split yoke portion has a connection end portion extending in the opposite direction across the tooth portion in a state of being laminated with each other, and a connection end portion of the first split core piece is provided with a projection, and the connection of the second split core piece
  • the end portion has a long hole extending along the circumferential direction of the divided yoke portion, and the protrusion of the first divided core piece of one adjacent divided laminated core is formed into the long hole of the second divided core piece of the other divided laminated core.
  • a plurality of divided laminated iron cores are connected endlessly by loosely fitting, and the annular yoke portion is configured to be able to expand its diameter (for example, see Patent Document 1).
  • the annular yoke is composed of a plurality of laminated yoke pieces that are rotatable with respect to each other, and magnetic pole teeth are formed on each yoke piece.
  • a first piece having a long hole and a second piece having a protrusion are rotatably connected via the long hole and the protrusion, and the protrusion slides in the long hole so that the adjacent magnetic pole A part of the gap formed between the teeth is configured to be larger than the others (see, for example, Patent Document 2).
  • the connecting part of the split laminated iron core is fixed by welding or the like to increase rigidity, or the armature core that has been returned to the annular shape is pressed into a cylindrical member such as a housing or shrink-fitted.
  • a cylindrical member such as a housing or shrink-fitted.
  • the present invention has been made to solve the above-described problems, and can increase the slot opening width of a target by simply moving one magnetic pole tooth in the circumferential direction, thereby improving the coil mounting workability.
  • An armature for a rotating electrical machine that can be improved and that the back yoke is constructed by laminating and integrating an annular back yoke piece to improve the accuracy of the roundness of the iron core and increase the rigidity of the iron core. It aims at obtaining the manufacturing method of an iron core and an armature.
  • An armature core of a rotating electrical machine includes an annular back yoke, and a plurality of magnetic pole teeth each protruding in the radial direction of the back yoke and arranged in the circumferential direction. Is formed by laminating and integrating annular back yoke pieces, and the plurality of magnetic pole teeth are constituted by laminating and integrating magnetic pole teeth pieces, respectively, and are separated from each other in the circumferential direction. Are connected to the back yoke so as to be reciprocally movable in the circumferential direction.
  • each of the plurality of magnetic pole teeth is connected to the annular back yoke so as to be reciprocally movable in the circumferential direction between the first position and the second position that are separated in the circumferential direction.
  • the slot opening width can be increased by moving the teeth to the first position. Therefore, as in the prior art, in order to increase the slot opening width at a certain place, it is not necessary to expand the armature core left and right around the corresponding magnetic teeth, and the man-hour for mounting the coil can be reduced. Mounting workability is improved. Therefore, even with a large or multi-layered armature core, the slot opening width can be increased with less energy, and the coil mounting workability can be improved.
  • the back yoke is constructed by laminating and integrating the annular back yoke pieces, the accuracy of the roundness of the armature core can be improved, and the operating characteristics of the rotating electrical machine can be improved. Furthermore, since the back yoke is configured in an annular shape, steps such as welding, press-fitting, and shrink fitting for increasing the rigidity of the armature core are not required, and the number of work steps can be reduced and the cost can be reduced. .
  • FIG. 8 It is a top view which shows the armature core in the rotary electric machine which concerns on Embodiment 8 of this invention. It is a principal part top view which shows the arrangement
  • FIG. 1 is a plan view showing a rotating electrical machine according to Embodiment 1 of the present invention
  • FIG. 2 is a plan view showing around the magnetic teeth of the armature core in the rotating electrical machine according to Embodiment 1 of the present invention
  • FIG. FIG. 4 is a plan view showing an arrangement state of the first back yoke piece and the first magnetic pole tooth piece constituting the armature core in the rotary electric machine according to the first embodiment of the invention
  • FIG. 4 is a rotary electric machine according to the first embodiment of the invention.
  • FIG. 5 is a main part plan view showing an arrangement state of the first back yoke piece and the first magnetic pole tooth piece constituting the armature core in FIG. 5, and FIG. 5 is a diagram showing the armature core in the rotary electric machine according to Embodiment 1 of the present invention.
  • FIG. 6 is a plan view showing the arrangement of the two back yoke pieces and the second magnetic pole tooth pieces, and FIG. 6 shows the second back yoke piece and the second magnetic pole tee constituting the armature core in the rotary electric machine according to Embodiment 1 of the present invention. Is a plan view showing an arrangement state of the scan strip.
  • FIG. 6 is a plan view showing an arrangement state of the scan strip.
  • FIG. 7 is a view for explaining the movement operation of the magnetic teeth of the armature core in the rotary electric machine according to Embodiment 1 of the present invention.
  • FIG. 7 (a) shows a state where the magnetic teeth are located at the second position.
  • FIG. 7B shows a state in which one magnetic pole tooth is located at the first position.
  • FIG. 8 is a view for explaining a method of mounting the armature coil on the armature core in the rotary electric machine according to Embodiment 1 of the present invention.
  • the rotating electrical machine 100 surrounds the rotor 1 via a certain gap between the rotor 1 disposed in a housing (not shown) and the rotor 1. And an armature 10 held coaxially in the housing.
  • the rotor 1 includes a rotor core 3 fixed to a rotary shaft 2 inserted at the axial center position, and a magnet 4 disposed on the outer peripheral surface of the rotor core 3.
  • ten magnets 4 are arranged on the outer peripheral surface of the rotor core 3 at an equiangular pitch in the circumferential direction.
  • the armature 10 is an electric machine in which a plurality of magnetic pole teeth 13 are arranged radially inwardly projecting from the inner peripheral wall surface of the annular back yoke 12 and are arranged at a regular pitch in the circumferential direction.
  • An armature coil 15 composed of a core core 11, a coil 15 a formed by winding a conductor wire around a slot 14 positioned on both sides of two magnetic pole teeth 13 that are continuous in the circumferential direction; And an insulator (not shown) interposed between the core iron core 11 and the armature coil 15.
  • the back yoke 12 includes annular first and second back yoke pieces 20, 21 punched from an electromagnetic steel plate. Then, 24 rectangular cutout portions 20a are formed at equiangular pitches in the circumferential direction on the inner circumferential side of the first back yoke piece 20 so as to open radially inward. Further, the punched caulking portions 20b are formed at an equiangular pitch on the outer peripheral side of the first back yoke piece 20 so as to be positioned between the cutout portions 20a. In addition, 24 long hole portions 21a are formed at equiangular pitches in the circumferential direction on the inner circumferential side of the second back yoke piece 21 with the hole direction as the circumferential direction.
  • the punched caulking portions 21b are formed at equiangular pitches on the outer peripheral side of the second back yoke piece 21 so as to be positioned between the long hole portions 21a. And when the 1st back yoke piece 20 and the 2nd back yoke piece 21 are piled up, the extraction caulking parts 20b and 21b overlap, and the long hole part 21a is located in the notch part 20a.
  • the hole shape of the long hole portion 21 a is configured such that both the inner peripheral side and the outer peripheral side edge portions extending in the circumferential direction are part of a cylindrical surface centering on the axis of the second back yoke piece 21.
  • both end faces in the circumferential direction each have an arc shape formed by a part of a cylindrical surface having a distance (hole width) between both edges as a diameter.
  • the magnetic pole teeth 13 include first and second magnetic pole teeth pieces 25 and 26 punched from an electromagnetic steel sheet.
  • the first magnetic pole tooth piece 25 includes a base portion 25a, a flange portion 25b protruding from the tip of the base portion 25a to both sides in the circumferential direction, a punched caulking portion 25c formed at the center position of the base portion 25a, and a periphery of the base portion of the base portion 25a.
  • a projecting portion 25d projecting radially outward from the center in the direction, a shaft portion 25e formed in a dowel shape on the projecting end side of one surface of the projecting portion 25d, and having a diameter slightly smaller than the hole width of the long hole portion 21a; Is provided.
  • the second magnetic pole tooth piece 26 includes a base portion 26a, a flange portion 26b that protrudes from the tip of the base portion 26a to both sides in the circumferential direction, and a punching portion 26c that is formed at the center position of the base portion 26a.
  • the first magnetic pole tooth piece 25 is formed in the same outer shape as that of the second magnetic pole tooth piece 26 except for the protruding portion 25d and the shaft portion 25e. And when the 1st magnetic pole tooth piece 25 and the 2nd magnetic pole tooth piece 26 are piled up, the extraction caulking part 25c, 26c overlaps.
  • the first back yoke piece 20 is disposed, and then, as shown in FIGS. 3 and 4, the protruding portions 25d are respectively inserted into the notches 20a.
  • the base portion 25a protrudes radially inward
  • the first magnetic pole tooth piece 25 is on the inner peripheral side of the first back yoke piece 20, and is flush with the first back yoke piece 20, and is equiangular in the circumferential direction. Place with.
  • the second back yoke piece 21 is disposed on the first back yoke piece 20 so that the shaft portion 25e is placed in the elongated hole portion 21a.
  • the second magnetic pole tooth piece 26 is placed on each of the first magnetic pole tooth pieces 25 so as to be flush with the second back yoke piece 21. This operation is repeated as many times as necessary, and the laminated body of the first and second back yoke pieces 20 and 21 is fixed and integrated by fitting the crimping portions 20b and 21b, thereby forming the annular back yoke 12.
  • the laminated body of the first and second magnetic pole teeth pieces 25 and 26 is fixed and integrated by fitting the caulking portions 25c and 26c, so that the magnetic pole teeth 13 are formed.
  • the shaft portion 25e is slidable in the elongated hole portion 21a in the hole direction of the elongated hole portion 21a, that is, in the circumferential direction. Therefore, the magnetic teeth 13 reciprocate between a first position where the shaft portion 25e contacts one end in the circumferential direction of the long hole portion 21a and a second position where the shaft portion 25e contacts the other circumferential end of the long hole portion 21a. It is possible to attach to the back yoke 12. Then, as shown in FIG.
  • a slot 14 located on one side of two magnetic pole teeth 13 continuous in the circumferential direction is referred to as a slot 14 1
  • a slot 14 located on the other side is designated as a slot 14 2
  • a slot 14 1 is the magnetic teeth 13 1
  • the magnetic teeth 13 on the other circumferential side of the slot 14 1 are the magnetic teeth 13 2
  • the magnetic teeth 13 on the circumferential one side of the slots 14 2 are the magnetic teeth.
  • 13 3 the magnetic teeth 13 of circumferential other side slot 14 2 and the magnetic pole teeth 13 4.
  • the magnetic teeth 13 are slid so that the shaft portion 25e contacts the other circumferential end of the elongated hole portion 21a, and each of the magnetic teeth 13 is positioned at the second position. As a result, the slot opening width between adjacent magnetic teeth 13 is reduced.
  • Each of the coils 15a is produced by winding a conductor wire a plurality of times in a ring shape.
  • the slots 14 1, 14 2 located on either side of the two pole tooth 13 which circumferentially continuous, as shaft portion 25e is in contact with one circumferential end of the long hole 21a
  • the slots 14 1, 14 The magnetic pole teeth 13 1 , 13 3 located on one circumferential side of 2 are slid to the first position, and the slot opening width is expanded.
  • the conductor wire bundle of the coil 15a is inserted into the slots 14 1 and 14 2 from the enlarged slot opening.
  • the magnetic pole teeth 13 1 , 13 3 located on one side in the circumferential direction of the slots 14 1 , 14 2 are slid and returned to the second position, and one coil 15 a is attached to the armature core 11. This operation is repeated, and the coils 15a are mounted on the armature core 11 one by one, even by one slot pitch counterclockwise in FIG.
  • the slots 14 1 positioned on one side of the two magnetic pole teeth 13 2 and 13 3 that are continuous in the circumferential direction have other coils 15a.
  • the conductor wire bundle is not inserted, but the conductor wire bundle of the other coil 15a is inserted into the slot 14 2 positioned on the other side of the two magnetic pole teeth 13 2 and 13 3 that are continuous in the circumferential direction.
  • the slot 14 1 to conductor wire bundles of the other coil 15a is not inserted, it is easy to insert the conductor wire bundles of the coil 15a. However, it is difficult to insert the conductor wire bundle of the coil 15a into the slot 14 2 in which the conductor wire bundle of the other coil 15a is inserted.
  • the magnetic pole teeth 13 1 and 13 3 positioned on one side in the circumferential direction of the slots 14 1 and 14 2 are slid to the first position to increase the slot opening width, and then the conductor wire bundle of the coil 15a. Is inserted into the slots 14 1 and 14 2 , the conductor wire bundle of the coil 15a can be easily inserted into the slot 14 2 into which the conductor wire bundle of the other coil 15a is inserted.
  • the magnetic pole teeth 13 3 are returned to the second position, so that the magnetic pole teeth 13 4 are pressed to the second position side and the shaft portion 25e of the magnetic pole teeth 13 4 is The magnetic pole teeth 13 4 are positioned and fixed at the second position by coming into contact with the other circumferential end of the elongated hole portion 21a.
  • the back yoke 12 is manufactured by stacking the first and second back yoke pieces 20 and 21 that are punched in an annular shape, and the magnetic pole teeth 13 are formed on the inner periphery of the back yoke 12. It is connected to the back yoke 12 so as to be reciprocally movable in the circumferential direction between the first position and the second position. Therefore, the magnetic pole teeth 13 positioned on one side of the slot 14 into which the conductor wire bundle is inserted are moved to the first position, the slot opening width is expanded, and the conductor electric flux of the coil 15a is expanded from the expanded slot opening to the slot. 14 can be inserted.
  • the coil 15a can be easily mounted on the armature core 11, and the mounting workability of the coil 15a is improved. Furthermore, the coil 15a can be easily inserted into the slot 14 in an aligned manner, the space factor can be improved, and the operating characteristics of the rotating electrical machine 100 can be improved.
  • the slot opening width can be increased only by moving the magnetic teeth 13 in the circumferential direction without deforming and moving the back yoke 12, and the workability of inserting the coil 15a into the slot 14 can be improved. Therefore, the same effect can be obtained for the armature core 11 having a large diameter or a large number of layers only by requiring less energy. Since the back yoke 12 is formed by laminating and integrating the annular first and second back yoke pieces 20 and 21, the roundness of the iron core can be increased and the operating characteristics of the rotating electrical machine 100 can be improved. it can. Moreover, since it is not necessary to return the armature core 11 to an annular shape after the coil 15a is attached to the armature core 11, the roundness of the armature core 11 can be ensured with high accuracy.
  • Patent Documents 1 and 2 since the armature core is configured by connecting a plurality of divided laminated cores endlessly, in order to increase the rigidity of the armature core, a connecting portion constituting the divided laminated core is provided. A step of fixing by welding or the like, or a step of fixing the armature core returned to an annular shape to a cylindrical member such as a housing by press fitting or shrink fitting is necessary. In the first embodiment, these steps required in Patent Documents 1 and 2 are not required, and the number of work steps can be reduced and the cost can be reduced.
  • the armature core 11 includes the first back yoke piece 20 and the first magnetic pole tooth piece 25, and the second back yoke piece 21 and the second magnetic pole tooth piece 26 alternately.
  • the armature core does not have to be composed of only the first and second back yoke pieces 20 and 21 and the first and second magnetic pole teeth pieces 25 and 26, but the first back yoke. It suffices to have at least one laminated body of a set of the piece 20 and the first magnetic pole tooth piece 25 and a set of the second back yoke piece 21 and the second magnetic pole tooth piece 26.
  • an annular third back yoke piece 22 and a second magnetic pole tooth piece 26 punched from an electromagnetic steel sheet are prepared.
  • the third back yoke piece 22 is manufactured in the same manner as the second back yoke piece 21 except that the long hole portion 21a is omitted.
  • the blanking portion 22b corresponds to the blanking portion 21b.
  • a part of the laminated parts constituting the armature core is constituted by laminating the first and second back yoke pieces 20 and 21 and the first and second magnetic pole teeth pieces 25 and 26 to constitute the armature core.
  • the remaining laminated portion may be configured by laminating the third back yoke piece 22 and the second magnetic pole piece 26.
  • the proportion of the notch 20a in the back yoke 12 is reduced, and the amount of iron constituting the armature core can be increased, so that the operating characteristics of the rotating electrical machine can be improved, for example, the efficiency of the motor can be improved.
  • FIGS. 10 and 11 are enlarged views of main portions showing the periphery of the magnetic teeth of the armature core in the rotary electric machine according to Embodiment 2 of the present invention.
  • FIG. 10 is a state where the magnetic teeth are located at the second position.
  • FIG. 11 shows a state where one magnetic pole tooth is located at the first position.
  • the second back yoke piece 23 is punched out in an annular shape from the electromagnetic steel sheet, and the arc-shaped long hole portions 23 a are respectively formed in the second back yoke piece 23 with the hole direction as the circumferential direction. It is formed at an equiangular pitch in the circumferential direction on the circumferential side. Further, the punched and crimped portions 23b are formed at an equiangular pitch on the outer peripheral side of the second back yoke piece 23 so as to be positioned between the long hole portions 23a. Furthermore, the convex part 23c is formed so that the circumferential direction both ends of the edge part of the outer peripheral side extended in the circumferential direction of the long hole part 23a may protrude in an inner peripheral side.
  • the second back yoke piece 23 is configured in the same manner as the second back yoke piece 21 in the first embodiment except that the convex portion 23c is formed.
  • the second embodiment is configured in the same manner as in the first embodiment except that the second back yoke piece 23 is used instead of the second back yoke piece 21.
  • the set of the first back yoke piece 20 and the first magnetic pole tooth piece 25 and the set of the second back yoke piece 23 and the second magnetic pole tooth piece 26 are alternately stacked. It is configured. And when the 1st back yoke piece 20 and the 2nd back yoke piece 23 are piled up, extraction caulking parts 20b and 23b overlap, and the layered product of the 1st and 2nd back yoke pieces 20 and 23 is unified, The back yoke 12A is produced. Further, the laminated body of the first and second magnetic pole tooth pieces 25 and 26 is integrated by fitting the caulking portions 25c and 26c, whereby the magnetic pole teeth 13 are produced. And the protrusion part 25d of the 1st magnetic pole teeth piece 25 is inserted in the notch part 20a, and the axial part 25e is inserted in the long hole part 23a in a loose-fit state.
  • the back yoke 12A is manufactured by laminating the first and second back yoke pieces 20 and 23 that are annularly punched, and the magnetic pole teeth 13 are positioned on the inner peripheral side of the back yoke 12A. It is connected to the back yoke 12A so as to be capable of reciprocating in the circumferential direction between the first value and the second position. Therefore, also in the second embodiment, the same effect as in the first embodiment can be obtained.
  • the convex portion 23c is formed so as to project both ends in the circumferential direction of the outer peripheral edge extending in the circumferential direction of the elongated hole portion 23a toward the inner circumferential side, and the hole width (diameter) of the elongated hole portion 23a. (Direction width) is narrow at the position of the convex portion 23c. Therefore, the shaft portion 25e slides to one side in the circumferential direction along the hole direction of the long hole portion 23a, and elastically deforms the convex portion 23c outward in the radial direction to get over the convex portion 23c, as shown in FIG. As a result, it is located in the 1st position which touches one end of long hole part 23a.
  • the shaft portion 25e slides and moves to the other side in the circumferential direction along the hole direction of the long hole portion 23a, elastically deforms the convex portion 23c radially outward, and climbs over the convex portion 23c, as shown in FIG. As a result, it is located at the second position in contact with the other end of the slot 23a.
  • a force that elastically deforms the convex portion 23c is required, so that the shaft portion 25e, that is, the magnetic pole teeth 13, is positioned and held at the first position and the second position.
  • the force over the convex part 23c can be set by adjusting the protrusion amount of the convex part 23c.
  • the magnetic pole teeth 13 can be easily and accurately positioned and held at the first position and the second position, so that the man-hours for manufacturing the armature can be reduced and the position of the magnetic pole teeth 13 varies.
  • the operating characteristics of the rotating electrical machine can be improved.
  • the convex portion 23c is formed so as to project both ends in the circumferential direction of the outer peripheral edge extending in the circumferential direction of the elongated hole portion 23a toward the inner peripheral side. May be formed so that both ends in the circumferential direction of the inner peripheral edge extending in the circumferential direction of the elongated hole portion 23a protrude toward the outer peripheral side.
  • FIG. FIG. 12 is an enlarged view of a main part showing the periphery of the magnetic teeth of the armature core in the rotary electric machine according to Embodiment 3 of the present invention.
  • the second back yoke piece 24 is punched out in an annular shape from the magnetic steel sheet, and the arc-shaped long hole portions 24 a are respectively formed on the inner peripheral side of the second back yoke piece 24 with the hole direction as the circumferential direction. It is formed at an equiangular pitch in the circumferential direction. Further, the punched caulking portions 24b are formed at an equiangular pitch on the outer peripheral side of the second back yoke piece 24 so as to be positioned between the long hole portions 24a. Moreover, the convex part 24c is formed so that the circumferential direction both ends of the edge part of the outer peripheral side extended in the circumferential direction of the long hole part 24a may protrude in the inner peripheral side.
  • an auxiliary hole 24d is formed in the second back yoke piece 24 in the vicinity of the convex portion 24c on the outer peripheral side of the convex portion 24c, facing the elongated hole portion 24a with the convex portion 24c interposed therebetween.
  • the second back yoke piece 24 is configured in the same manner as the second back yoke piece 21 in the first embodiment except that the convex portion 24c and the auxiliary hole 24d are formed.
  • the third embodiment is configured in the same manner as in the first embodiment except that the second back yoke piece 24 is used instead of the second back yoke piece 21.
  • the set of the first back yoke pieces 20 and the first magnetic pole tooth pieces 25 and the set of the second back yoke pieces 24 and the second magnetic pole tooth pieces 26 are alternately laminated. It is configured. Then, when the first back yoke piece 20 and the second back yoke piece 24 are overlapped, the caulking portions 20b and 24b are overlapped, and the laminated body of the first and second back yoke pieces 20 and 24 is integrated, The back yoke 12B is produced. Further, the laminated body of the first and second magnetic pole tooth pieces 25 and 26 is integrated by fitting the caulking portions 25c and 26c, whereby the magnetic pole teeth 13 are produced. The protruding portion 25d of the first magnetic pole tooth piece 25 is inserted into the cutout portion 20a, and the shaft portion 25e is inserted into the elongated hole portion 24a in a loosely fitted state.
  • the back yoke 12B is manufactured by stacking the first and second back yoke pieces 20 and 24 that are annularly punched, and the magnetic pole teeth 13 are positioned on the inner peripheral side of the back yoke 12B. It is connected to the back yoke 12B so as to reciprocate in the circumferential direction between the first value and the second position. Therefore, also in Embodiment 3, the same effect as in Embodiment 1 can be obtained.
  • the convex portion 24c is formed so as to project both ends in the circumferential direction of the outer peripheral edge extending in the circumferential direction of the long hole portion 24a to the inner peripheral side, and the hole width (diameter) of the long hole portion 24a. (Direction width) is narrow at the position of the convex portion 24c. Further, the auxiliary hole 24d is formed close to the outer peripheral side of the convex portion 24c, and the convex portion 24c is formed thin, and is easily elastically deformed.
  • the shaft portion 25e slides to one side in the circumferential direction along the hole direction of the long hole portion 24a, and pushes up the convex portion 24c when getting over the convex portion 24c.
  • the thin convex part 24c formed between the auxiliary hole 24d and the long hole part 24a is elastically deformed, and the shaft part 25e gets over the convex part 24c.
  • the shaft portion 25e gets over the convex portion 24c
  • the convex portion 24c is restored.
  • the axial part 25e moves to the one side of the circumferential direction by the restoring force of the convex part 24c, and is located in the 1st position which touches the end of the circumferential direction of the long hole part 24a.
  • the shaft portion 25e slides to the other side in the circumferential direction along the hole direction of the long hole portion 23a, elastically deforms the convex portion 24c, gets over the convex portion 24c, and moves to the other end of the long hole portion 24a. It is located in the 2nd position which touches.
  • a force for elastically deforming the convex portion 24c is required, so that the magnetic pole teeth 13 are positioned and held at the first position and the second position.
  • the force over the convex part 24c can be set by adjusting the thickness of the convex part 24c between the auxiliary hole 24d and the long hole part 24a.
  • the magnetic pole teeth 13 can be easily and accurately positioned and held at the first position and the second position, so that the manufacturing process of the armature can be reduced, and variation in the position of the magnetic pole teeth 13 is suppressed.
  • the operating characteristics of the rotating electrical machine can be improved.
  • FIG. FIG. 13 is an enlarged view of the main part showing the periphery of the magnetic teeth of the armature core in the rotary electric machine according to Embodiment 4 of the present invention.
  • the magnetic pole teeth 13 ⁇ / b> A uses a first magnetic pole tooth piece in which a shaft portion 25 e ′ having an elliptical cross section is formed on a protruding portion 25 d.
  • Other configurations are the same as those in the first embodiment.
  • the shaft portion 25e ′ is inserted into the elongated hole portion 21a so as to be loosely fitted, and the magnetic pole teeth 13A are located on the inner peripheral side of the back yoke 12 so It is connected to the back yoke 12 so as to be reciprocally movable in the circumferential direction between the two positions. Therefore, also in the fourth embodiment, the same effect as in the first embodiment can be obtained.
  • the outer peripheral end surface of the second base portion 26 a of the second magnetic pole tooth piece 26 is formed to have a curvature radius equivalent to the curvature radius of the inner peripheral end surface of the second back yoke piece 21.
  • An inevitable minute gap is formed between the second magnetic pole teeth piece 26.
  • the moving force of the magnetic pole teeth 13 is reduced to improve the mounting workability of the coil 15a, or the cost is reduced without increasing the processing accuracy of the long hole portion 21a and the shaft portion 25e.
  • the shaft of the shaft portion 25e is formed by the gap formed between the second back yoke piece 21 and the second magnetic pole tooth piece 26.
  • the magnetic teeth 13 are pivoted about the heart. The rotation of the magnetic teeth 13 induces variations in the position (posture) of the magnetic teeth 13 positioned at the second position value, and deteriorates the operating characteristics of the rotating electrical machine.
  • the shaft portion 25e ′ has an elliptical cross section, it is possible to suppress the rotation of the magnetic teeth 13A centered on the axis of the shaft portion 25e ′ shown by the arrow A in FIG. . Therefore, variation in the position (posture) of the magnetic teeth 13A positioned at the second position value is suppressed, and the operating characteristics of the rotating electrical machine can be improved. Furthermore, since the fitting clearance between the long hole portion 21a and the shaft portion 25e can be increased, the moving force of the magnetic pole teeth 13 is reduced, and the mounting workability of the coil 15a is improved. Further, it is not necessary to excessively increase the processing accuracy of the long hole portion 21a and the shaft portion 25e ', and the cost can be reduced.
  • the shaft portion having the circular cross section in the first embodiment is replaced with the shaft portion having the elliptical cross section.
  • the shaft portion having the circular cross section in the second and third embodiments is replaced with the shaft having the elliptical cross section. The same effect can be obtained even if the part is changed.
  • FIG. FIG. 14 is a plan view showing a rotary electric machine according to Embodiment 5 of the present invention
  • FIG. 15 shows a first back yoke piece and first magnetic pole teeth constituting an armature core in the rotary electric machine according to Embodiment 5 of the present invention
  • FIG. 16 is a plan view showing the arrangement state of the second back yoke piece and the second magnetic pole tooth piece constituting the armature core in the rotary electric machine according to Embodiment 5 of the present invention
  • 17 is a view for explaining a method of mounting an armature coil on an armature core in a rotary electric machine according to Embodiment 5 of the present invention.
  • the rotating electrical machine 101 is coaxial with the housing so as to surround the rotor 1 through a certain gap between the rotor 1 disposed in a housing (not shown) and the rotor 1. And an armature 40 held by the armature.
  • the armature 40 is an electric machine in which magnetic pole teeth 43 project radially inward from the inner peripheral wall surface of the annular back yoke 42 and are arranged in a plurality of equiangular pitches in the circumferential direction, 24 in this case.
  • An armature coil 15 composed of a core core 41, a coil 15a formed by winding a conductor wire around a slot 44 positioned on both sides of two magnetic pole teeth 43 continuous in the circumferential direction, An insulator (not shown) interposed between the core iron core 41 and the armature coil 15.
  • the back yoke 42 includes annular first and second back yoke pieces 50 and 51 punched from an electromagnetic steel plate. Then, 24 long hole portions 50a are formed at equiangular pitches in the circumferential direction on the inner circumferential side of the first back yoke piece 50, with the hole direction as the circumferential direction. A communication portion 50 b is formed in the first back yoke piece 50 so that each of the elongated hole portions 50 a communicates with the inner peripheral side of the first back yoke piece 50. Further, the punched caulking portions 50c are formed at an equiangular pitch on the outer peripheral side of the first back yoke piece 50 so as to be positioned between the long hole portions 50a.
  • the punched caulking portions 51a are formed at an equiangular pitch on the outer peripheral side of the second back yoke piece 51, respectively. And when the 1st back yoke piece 50 and the 2nd back yoke piece 51 are piled up, the extraction caulking parts 50c and 51a overlap.
  • the hole shape of the long hole portion 50 a is configured such that both the inner peripheral side and the outer peripheral side edge portions extending in the circumferential direction are part of a cylindrical surface centering on the axis of the first back yoke piece 50.
  • both end faces in the circumferential direction each have an arc shape formed by a part of a cylindrical surface having a distance (hole width) between both edges as a diameter.
  • the magnetic pole teeth 43 are provided with first and second magnetic pole teeth pieces 55 and 56 punched from an electromagnetic steel plate.
  • the first magnetic pole tooth piece 55 includes a base portion 55a, a flange portion 55b protruding from the tip of the base portion 55a to both sides in the circumferential direction, a punched caulking portion 55c formed at the center position of the base portion 55a, and a periphery of the base portion of the base portion 55a.
  • the projection part 55d which protrudes to radial direction outward from the direction center, and the fitting part 55e which protrudes in the circumferential direction both sides from the protrusion end of the projection part 55d are provided.
  • the second magnetic pole tooth piece 56 includes a base portion 56a, a flange portion 56b protruding from the tip of the base portion 56a to both sides in the circumferential direction, and a punched caulking portion 56c formed at the center position of the base portion 56a.
  • the first magnetic pole tooth piece 55 is formed in the same outer shape as the second magnetic pole tooth piece 56 except for the protruding portion 55d and the fitting portion 55e. And when the 1st magnetic pole tooth piece 55 and the 2nd magnetic pole tooth piece 56 are piled up, the extraction caulking parts 55c and 56c overlap.
  • the fitting portion 55e is a cylinder whose inner peripheral side and outer peripheral side extending in the circumferential direction have a curvature radius substantially equal to the curvature radius of the inner peripheral side and the outer peripheral side of the long hole portion 50a. It is formed in the circular arc shape comprised in a part of surface, and the circumferential direction length is shorter than the long hole part 50a.
  • the first back yoke piece 50 is disposed, and then, as shown in FIG. 15, the fitting portions 55e are inserted into the long hole portions 50a, respectively, 55a is protruded inward in the radial direction, and the first magnetic pole tooth pieces 55 are arranged on the inner peripheral side of the first back yoke piece 50 and flush with the first back yoke piece 50 at an equiangular pitch in the circumferential direction.
  • the second back yoke piece 51 is disposed on the first back yoke piece 50.
  • the second magnetic pole tooth piece 56 is placed on each of the first magnetic pole tooth pieces 55 so as to be flush with the second back yoke piece 51.
  • the laminated body of the first and second back yoke pieces 50 and 51 is fixed and integrated by fitting the crimping portions 50c and 51a, thereby forming the annular back yoke 42.
  • the laminated body of the first and second magnetic pole teeth 55 and 56 is fixed and integrated by fitting the crimping portions 55c and 56c, so that the magnetic pole teeth 43 are formed.
  • the fitting portion 55e can be slid in the elongated hole portion 50a in the hole direction of the elongated hole portion 50a, that is, in the circumferential direction. Therefore, the magnetic teeth 43 are between the first position where the fitting portion 55e contacts one end in the circumferential direction of the elongated hole portion 50a and the second position where the fitting portion 55e contacts the other circumferential end of the elongated hole portion 50a. It is attached to the back yoke 42 so as to be able to reciprocate. And when each fitting part 55e of the magnetic pole teeth 43 contacts the other circumferential end of the elongated hole part 50a, the gap between adjacent magnetic pole teeth 43, that is, the slot opening width is reduced. Further, when the fitting portion 55e of one magnetic pole tooth 43 comes into contact with one end in the circumferential direction of the elongated hole portion 50a, the gap between adjacent magnetic pole teeth 43, that is, the slot opening width is expanded.
  • each of the magnetic teeth 43 are slid so that the fitting portion 55e contacts the other circumferential end of the long hole portion 50a, and each of the magnetic teeth 43 is positioned at the second position. As a result, the slot opening width between adjacent magnetic pole teeth 43 is reduced.
  • Each of the coils 15a is produced by winding a conductor wire a plurality of times in a ring shape.
  • the slot 44 1, 44 the pole tooth 43 1, 43 3 located in the second circumferential direction one side is slid to the first position, to enlarge the slot opening width.
  • the conductor wire bundle of the coil 15a is inserted into the slots 44 1 and 44 2 from the enlarged slot opening.
  • the slot 44 1, 44 pole teeth 43 1 located in the one circumferential side of the 2, 43 3 is returned to the second position is slid, one coil 15a is attached to the armature core 41. This operation is repeated, and the coils 15a are attached to the armature core 41 one by one while being even one slot pitch counterclockwise in FIG.
  • the slots 44 1 positioned on one side of the two magnetic pole teeth 43 2 and 43 3 that are continuous in the circumferential direction have other coils 15a.
  • the conductor wire bundles of the other coil 15a is inserted into slot 44 2 located on the other side in the circumferential direction in successive two pole tooth 43 2, 43 3.
  • the slot 44 1 to conductor wire bundles of the other coil 15a is not inserted, it is easy to insert the conductor wire bundles of the coil 15a.
  • the slot 44 2 to conductor wire bundles of the other coil 15a is inserted, the insertion of the conductor wire bundles of the coil 15a becomes difficult.
  • the conductor wire bundles of the coil 15a are inserted into the slots 44 1 and 44 2 , the conductor wire bundle of the coil 15a can be easily inserted into the slot 44 2 into which the conductor wire bundle of the other coil 15a is inserted.
  • the magnetic pole teeth 43 4 is pressed against the second position, the shaft portion 55e of the magnetic pole teeth 43 4 contact with the circumferential direction end of the long hole 50a, the magnetic pole teeth 43 4 is positioned and fixed to the second position.
  • the back yoke 42 is manufactured by stacking the first and second back yoke pieces 50 and 51 that are annularly punched, and the magnetic pole teeth 43 are formed on the inner periphery of the back yoke 42. It is connected to the back yoke 42 so as to reciprocate in the circumferential direction between the first position and the second position. Therefore, the magnetic pole teeth 43 located on one side of the slot 44 in which the conductor wire bundle is inserted is moved to the first position, the slot opening width is enlarged, and the conductor electric flux of the coil 15a is expanded from the enlarged slot opening to the slot. 44, the coil 15a can be easily mounted on the armature core 41, and the mounting workability of the coil 15a is improved. As a result, the coil 15a can be easily aligned and inserted into the slot 44, the space factor can be improved, and the operating characteristics of the rotating electrical machine 101 can be improved.
  • the slot opening width can be increased only by moving the magnetic teeth 43 in the circumferential direction, and the workability of inserting the coil 15a into the slot 44 can be improved. Therefore, the same effect can be obtained for the armature core 41 having a large diameter or a large number of layers only by requiring less energy. Since the back yoke 42 is formed by laminating and integrating the annular first and second back yoke pieces 50 and 51, the roundness can be increased and the operating characteristics of the rotating electrical machine 101 can be improved. Further, since it is not necessary to return the armature core 41 to an annular shape after the mounting of the coil 15a to the armature core 41 is completed, the roundness of the armature core 41 can be ensured with high accuracy.
  • the process of increasing the rigidity required in the conventional armature core structure configured by connecting a plurality of divided laminated cores in an endless manner is unnecessary, the number of work steps can be reduced. In addition, the cost can be reduced.
  • the armature core 41 includes a set of the first back yoke piece 50 and the first magnetic pole tooth piece 55 and a set of the second back yoke piece 51 and the second magnetic pole tooth piece 56 alternately.
  • the armature core is not limited to this configuration.
  • the armature core has at least one laminated body of a set of the first back yoke piece 50 and the first magnetic pole tooth piece 55 and remains.
  • the laminated portion may be formed of a laminated body of a set of the second back yoke piece 51 and the second magnetic pole tooth piece 56.
  • FIG. 18 is a view for explaining the movement operation of the magnetic teeth of the armature core in the rotary electric machine according to Embodiment 6 of the present invention.
  • FIG. 18 (a) shows the state where the magnetic teeth are located at the second position.
  • FIG. 18B shows a state in which one magnetic pole tooth is located at the first position.
  • the second back yoke piece and the second magnetic pole tooth piece located at one end of the armature core are omitted for convenience.
  • the first back yoke piece 52 is punched in an annular shape from a magnetic steel sheet, and the arc-shaped long hole portions 52 a are respectively formed on the inner peripheral side of the first back yoke piece 52 with the hole direction as the circumferential direction. Twenty-four are formed at equiangular pitches in the circumferential direction.
  • a communication portion 52 b is formed in the first back yoke piece 52 so that each of the elongated hole portions 52 a communicates with the inner peripheral side of the first back yoke piece 52.
  • the punched caulking portions 52c are formed at an equiangular pitch on the outer peripheral side of the second back yoke piece 52 so as to be positioned between the long hole portions 52a.
  • the convex part 52d is formed so that the both ends of the circumferential direction of the edge part of the outer peripheral side extended in the circumferential direction of the long hole part 52a may protrude in the inner peripheral side.
  • the first magnetic pole tooth piece 57 includes a base portion 57a, a flange portion 57b protruding from the tip of the base portion 57a to both sides in the circumferential direction, a punched caulking portion 57c formed at the center position of the base portion 57a, and a periphery of the base portion of the base portion 57a.
  • a protrusion 57d that protrudes radially outward from the center in the direction
  • an arc-shaped fitting portion 57e that protrudes from the protruding end of the protrusion 57d to both sides in the circumferential direction
  • an outer peripheral edge of the fitting portion 57e A recess 57f.
  • the concave portion 57f accommodates the convex portion 52d and releases the press-fitting when the fitting portion 57e contacts one end in the circumferential direction of the elongated hole portion 52a, and the fitting portion 57e contacts the other circumferential end of the elongated hole portion 52a. It is sometimes formed on the outer peripheral edge of the fitting portion 57e so as to accommodate the convex portion 52d and release the press-fitting.
  • the first back yoke piece 52 is configured in the same manner as the first back yoke piece 50 in the fifth embodiment except that the convex portion 52d is formed.
  • the first magnetic pole tooth piece 57 is configured in the same manner as the first magnetic pole tooth piece 55 in the fifth embodiment except that the concave portion 57f is formed.
  • the sixth embodiment except that the first back yoke piece 52 and the first magnetic pole tooth piece 57 are used in place of the first back yoke piece 50 and the first magnetic pole tooth piece 55, the above embodiment is described. This is the same as in FIG.
  • the set of the first back yoke piece 52 and the first magnetic pole tooth piece 57 and the set of the second back yoke piece 51 and the second magnetic pole tooth piece 56 are alternately stacked. It is configured. And when the 1st back yoke piece 52 and the 2nd back yoke piece 51 are piled up, extraction caulking parts 52c and 51a overlap, and the layered product of the 1st and 2nd back yoke pieces 52 and 51 is unified, The back yoke 42A is produced. Further, the laminated body of the first and second magnetic pole teeth pieces 57 and 56 is integrated by fitting the caulking portions 57c and 56c to produce the magnetic pole teeth 43A. And the protrusion part 57d of the 1st magnetic pole teeth piece 57 is inserted in the communication part 52b, and the fitting part 57e is inserted in the long hole part 52a in a loose-fit state.
  • the back yoke 42A is manufactured by stacking the first and second back yoke pieces 52, 51 that are annularly punched, and the magnetic pole teeth 43A are positioned on the inner peripheral side of the back yoke 42A. It is connected to the back yoke 42A so as to be reciprocally movable in the circumferential direction between the first value and the second position. Therefore, in the sixth embodiment, the same effect as in the fifth embodiment can be obtained.
  • the convex portion 52d is formed so as to project both ends in the circumferential direction of the outer peripheral edge extending in the circumferential direction of the long hole portion 52a to the inner peripheral side, and the hole width (diameter) of the long hole portion 52a. (Direction width) is narrow at the position of the convex portion 52d. Accordingly, the fitting portion 57e slides and moves to one side in the circumferential direction along the hole direction of the elongated hole portion 52a, elastically deforms the convex portion 52d outward in the radial direction, and climbs over the convex portion 52d. As shown in (b), it is located at the first position in contact with one end of the slot 52a.
  • the convex portion 52d is housed in the concave portion 57f, and the press-fitting is released.
  • the fitting portion 57e slides to the other side in the circumferential direction along the hole direction of the elongated hole portion 52a, elastically deforms the convex portion 52c outward in the radial direction, and climbs over the convex portion 52c.
  • it is located in the 2nd position which touches the other end of the long hole part 52a.
  • the convex part 52c is accommodated in the concave part 57f, and the press-fitting is released.
  • the fitting part 57e in order for the fitting part 57e to get over the convex part 52d, a force for elastically deforming the convex part 52d is required, so the fitting part 52e, that is, the magnetic teeth 43A is positioned and held at the first position and the second position. Is done.
  • the force over the convex part 52d can be set by adjusting the protrusion amount of the convex part 52d.
  • the magnetic teeth 43A can be easily and accurately positioned and held at the first position and the second position, so that the armature manufacturing process can be reduced and the variation in the positions of the magnetic teeth 43A is suppressed.
  • the operating characteristics of the rotating electrical machine can be improved.
  • the auxiliary hole is formed in the first back yoke piece 52 so as to face the elongated hole portion 52a across the convex portion 52d, and the convex portion 52d is configured to be thin, and the fitting portion The convex portion 52d may be easily elastically deformed during the press-fitting of 57e.
  • the armature core 41A includes the first back yoke piece 52 and the first magnetic pole tooth piece 57, and the second back yoke piece 51 and the second magnetic pole tooth piece 56 alternately.
  • the armature core is not limited to this configuration.
  • the armature core has at least one laminated body of a set of the first back yoke piece 52 and the first magnetic pole tooth piece 57, and remains.
  • the laminated portion may be formed of a laminated body of a set of the second back yoke piece 51 and the second magnetic pole tooth piece 56.
  • FIG. 19 is a plan view of relevant parts showing the vicinity of the magnetic teeth of the armature core in the rotary electric machine according to Embodiment 7 of the present invention.
  • the second back yoke piece and the second magnetic pole tooth piece located at one end of the armature core are omitted.
  • the first back yoke piece 53 is punched out from the magnetic steel sheet in an annular shape, and the protrusions 53 a protrude radially inward from the inner peripheral end of the first back yoke piece 53, respectively. 24 are formed at an equiangular pitch.
  • Arc-shaped fitting portions 53b are formed so as to protrude from both protruding ends of the protruding portion 53a to both sides in the circumferential direction.
  • the extraction caulking portions 53c are formed at equiangular pitches on the outer peripheral side of the first back yoke piece 53 so as to be positioned between the fitting portions 53b.
  • the first magnetic pole tooth piece 58 is punched from an electromagnetic steel plate, and has a base portion 58a, a flange portion 58b protruding from the tip of the base portion 58a on both sides in the circumferential direction, a punched caulking portion 58c formed at the center position of the base portion 58a, and a base portion An arc-shaped elongated hole portion 58d formed at a circumferential center position on the root portion side of 58a, and a communication portion 58e that communicates the elongated hole portion 58d outward of the root portion.
  • the first embodiment is used except that the first back yoke piece 53 and the first magnetic pole tooth piece 58 are used instead of the first back yoke piece 50 and the first magnetic pole tooth piece 55. This is the same as in FIG.
  • the set of the first back yoke piece 53 and the first magnetic pole tooth piece 58 and the set of the second back yoke piece 51 and the second magnetic pole tooth piece 56 are alternately stacked. It is configured. And when the 1st back yoke piece 53 and the 2nd back yoke piece 51 are piled up, extraction caulking parts 53c and 51a overlap, and the layered product of the 1st and 2nd back yoke pieces 53 and 51 is unified, The back yoke 42B is produced. Further, the laminated body of the first and second magnetic pole tooth pieces 58 and 56 is integrated by fitting the caulking portions 58c and 56c, thereby producing the magnetic pole teeth 43B.
  • the projection part 53a of the 1st back yoke piece 53 is inserted in the communication part 58e, and the fitting part 53b is inserted in the long hole part 58d in a loose fitting state.
  • the fitting portion 53b is in contact with one end of the elongated hole portion 58d in the circumferential direction, the magnetic pole teeth 43B are positioned at the first position, and the fitting portion 53b is in contact with the other circumferential end of the elongated hole portion 58d. 43B is located at the second position.
  • the back yoke 42B is manufactured by stacking the first and second back yoke pieces 53, 51 that are annularly punched, and the magnetic pole teeth 43B are positioned on the inner peripheral side of the back yoke 42B.
  • the back yoke 42B is connected to the first position and the second position so as to be reciprocally movable in the circumferential direction. Therefore, also in Embodiment 7, the same effect as in Embodiment 5 can be obtained.
  • the convex portion is formed so as to project both ends in the circumferential direction of the inner peripheral edge extending in the circumferential direction of the long hole portion 58d to the outer peripheral side, and the fitting portion 53b is a long hole.
  • the convex portion is accommodated to release press-fitting when it contacts one circumferential end of the portion 58d, and the convex portion is accommodated to release press-fit when the fitting portion 53b contacts the other circumferential end of the elongated hole portion 58d.
  • a recess may be formed on the inner peripheral edge of the fitting portion 53b.
  • the magnetic teeth 43B can be easily and accurately positioned and held at the first position and the second position.
  • auxiliary hole is formed in the first magnetic pole tooth piece 58 so as to be opposed to the elongated hole portion 58d across the convex portion, and the convex portion is configured to be thin, and the convex portion is elastically deformed when the fitting portion 53d is press-fitted. You may make it easy to do.
  • the armature core 41B includes a set of the first back yoke piece 53 and the first magnetic pole tooth piece 58 and a set of the second back yoke piece 51 and the second magnetic pole tooth piece 56 alternately.
  • the armature core is not limited to this configuration.
  • the armature core has at least one laminated body of the first back yoke piece 53 and the first magnetic pole tooth piece 58 and remains.
  • the laminated portion may be formed of a laminated body of a set of the second back yoke piece 51 and the second magnetic pole tooth piece 56.
  • FIG. FIG. 20 is a plan view showing an armature core in a rotary electric machine according to Embodiment 8 of the present invention
  • FIG. 21 shows a first back yoke piece constituting the armature core in the rotary electric machine according to Embodiment 8 of the present invention
  • FIG. 22 is an essential part plan view showing an arrangement state of the first magnetic pole tooth pieces
  • FIG. 22 is an arrangement state of the second back yoke piece and the second magnetic pole tooth piece constituting the armature core in the rotary electric machine according to Embodiment 8 of the present invention. It is a principal part top view which shows.
  • an armature core 61 includes an annular back yoke 62 and 24 magnetic poles that protrude radially inward from the inner peripheral wall surface of the back yoke 62 and are arranged at equiangular pitches in the circumferential direction. Teeth 63.
  • the back yoke 62 includes annular first and second back yoke pieces 70 and 71 punched from an electromagnetic steel plate. Then, each of the shaft sections 70a having a circular cross section protrudes from one surface of the first back yoke piece 70 and is formed in the circumferential direction at an equiangular pitch on the inner peripheral side of the first back yoke piece 70.
  • the punched caulking portions 70b are respectively positioned between the shaft portions 70a and formed on the outer peripheral side of the first back yoke piece 70 at an equiangular pitch.
  • the cutout portions 71a are opened to the inner peripheral side, and are formed in the second back yoke piece 71 at the same number as the shaft portion 70a at an equiangular pitch in the circumferential direction.
  • the punched caulking portions 71b are respectively formed between the cutout portions 71a and formed at an equiangular pitch on the outer peripheral side of the second back yoke piece 71. And when the 1st back yoke piece 70 and the 2nd back yoke piece 71 are piled up, extraction caulking part 70b, 71b overlaps.
  • the magnetic pole teeth 63 are provided with first and second magnetic pole teeth pieces 75 and 76 punched from the electromagnetic steel sheet.
  • the first magnetic pole tooth piece 75 includes a base portion 75a, a flange portion 75b protruding from the tip of the base portion 75a to both sides in the circumferential direction, and a punched caulking portion 75c formed at the center position of the base portion 75a.
  • the second magnetic pole teeth piece 76 includes a base portion 76a, a flange portion 76b projecting from the tip of the base portion 76a to both sides in the circumferential direction, a punched caulking portion 76c formed at a central position of the base portion 76a, and a base portion side of the base portion 76a.
  • An arc-shaped elongated hole portion 76d formed at the center in the circumferential direction.
  • the bottom portion extending in the circumferential direction of the notch 71a is formed in an arc shape centering on the axis of the second back yoke piece 71, and the base side end portion of the base portion 76a is substantially equal to the bottom portion of the notch 71a. It is formed in an arc shape with a radius of curvature. Furthermore, the circumferential width of the base side end of the base portion 76a is shorter than the circumferential width of the notch 71a.
  • the first back yoke piece 70 is disposed, and the first magnetic pole tooth piece 75 is disposed on the inner peripheral side of the first back yoke piece 70, and The first back yoke piece 70 and the first back yoke piece 70 are flush with each other at an equiangular pitch in the circumferential direction.
  • the second back yoke piece 71 is disposed on the first back yoke piece 70.
  • the second magnetic pole teeth piece 76 is overlaid on each of the first magnetic pole teeth pieces 75 so that the shaft portion 70 a is inserted into the elongated hole portion 76 d, and the second back yoke.
  • the shaft portion 70a is inserted into the elongated hole portion 76d, and the magnetic pole teeth 63 are slidable in the circumferential direction. Therefore, the magnetic teeth 63 reciprocate between a first position where the shaft portion 70a is in contact with the other circumferential end of the elongated hole portion 76d and a first position where the shaft portion 70a is in contact with one circumferential end of the elongated hole portion 76d. It is attached to the back yoke 62 as possible.
  • each elongated hole portion 76d of the magnetic pole teeth 63 comes into contact with the shaft portion 70a, a gap between adjacent magnetic pole teeth 63, that is, a slot opening width is reduced. Further, when the other circumferential end of the elongated hole portion 76d of one magnetic pole tooth 63 is in contact with the shaft portion 70a, a gap between adjacent magnetic pole teeth 63, that is, a slot opening width is expanded.
  • the coil 15a inserts the conductor wire bundle into each of the slots 64 positioned on both sides of the two magnetic pole teeth 63 that are continuous in the circumferential direction. Attached to the iron core 61. Then, the coil 15a is attached to the armature core 61, for example, counterclockwise even by one slot pitch.
  • the back yoke 62 is produced by laminating the first and second back yoke pieces 70 and 71 that are annularly punched, and the magnetic teeth 63 are located on the inner peripheral side of the back yoke 62.
  • the back yoke 62 is connected to the first position and the second position so as to reciprocate in the circumferential direction. Therefore, the magnetic teeth 63 positioned on one side of the slot 64 in which the conductor wire bundle is inserted are moved to the first position, the slot opening width is expanded, and the conductor electric flux of the coil 15a is expanded from the expanded slot opening to the slot. 64, the coil 15a can be easily mounted on the armature core 61, and the mounting workability of the coil 15a is improved. As a result, the coil 15a can be easily inserted into the slot 64 in an aligned manner, the space factor can be improved, and the operating characteristics of the rotating electrical machine can be improved.
  • the slot opening width can be expanded only by moving the magnetic teeth 63 in the circumferential direction without deforming and moving the back yoke 62, and the workability of inserting the coil 15a into the slot 64 can be improved. Therefore, the same effect can be obtained for the armature core 61 having a large diameter or a large number of layers only by requiring less energy. Since the back yoke 62 is formed by laminating and integrating the annular first and second back yoke pieces 70 and 71, the roundness can be increased and the operating characteristics of the rotating electrical machine can be improved. Further, since it is not necessary to return the armature core 61 to an annular shape after the mounting of the coil 15a to the armature core 61 is completed, the roundness of the armature core 61 can be ensured with high accuracy.
  • the process of increasing the rigidity required in the conventional armature core structure configured by connecting a plurality of divided laminated cores in an endless manner is unnecessary, the number of work steps can be reduced. In addition, the cost can be reduced.
  • the armature core 61 includes a set of the first back yoke piece 70 and the first magnetic pole tooth piece 75 and a set of the second back yoke piece 71 and the second magnetic pole tooth piece 76 alternately.
  • the armature core does not have to be composed of only the first and second back yoke pieces 70 and 71 and the first and second magnetic pole tooth pieces 75 and 76, but the first back yoke. It suffices to have at least one laminate of a set of the piece 70 and the first magnetic pole tooth piece 75 and a set of the second back yoke piece 71 and the second magnetic pole tooth piece 76.
  • an annular third back yoke piece and a first magnetic pole tooth piece 75 punched from an electromagnetic steel sheet are prepared.
  • the third back yoke piece is manufactured in the same manner as the first back yoke piece 70 except that the shaft portion 70a is omitted.
  • a part of the laminated portion constituting the armature core is constituted by laminating the first and second back yoke pieces 70 and 71 and the first and second magnetic pole tooth pieces 75 and 76 to constitute the armature core.
  • the remaining laminated portion may be constituted by laminating the third back yoke piece and the first magnetic pole tooth piece 75.
  • the proportion of the notch 71a in the back yoke is reduced and the amount of iron constituting the armature core can be increased, the operating characteristics of the rotating electrical machine can be improved, for example, the efficiency of the motor can be improved.
  • the convex portions protrude on the outer peripheral side at both ends in the circumferential direction of the inner peripheral side or outer peripheral side of the elongated hole portion 76d in the circumferential direction.
  • the hole width (diameter width) of the long hole portion 76d may be narrowed at the position of the convex portion.
  • auxiliary holes may be formed on the inner peripheral side or the outer peripheral side of the convex portion of the second magnetic pole piece 76 to make the convex portion thin.
  • the shaft portion 70a is formed in a circular cross section.
  • the shaft portion may be a shaft portion having an elliptical cross section.
  • the rotating electric machine is described with 10 poles and 24 slots, but the number of pole slots is not limited to this.
  • the armature core in which the magnetic teeth protrude from the inner peripheral surface of the annular back yoke radially inward has been described.
  • the magnetic teeth are annular. The same effect can be obtained even when applied to an armature core projecting radially outward from the outer peripheral surface of the back yoke.
  • the coils are arranged at a pitch of 1 slot in the circumferential direction and attached to the armature core.
  • the arrangement pitch of the coils is not limited to a pitch of 1 slot. They may be arranged with an arrangement pitch of 2 slots or more, or with a plurality of arrangement pitches.

Abstract

The present invention provides a rotating electric machine armature iron core and an armature manufacturing method in which coil mounting workability can be improved by enabling the opening width of a target slot to be widened only by moving one magnetic pole tooth in a circumferential direction and the accuracy of the roundness of the iron core and the rigidity of the iron core can be enhanced by structuring a back yoke by laminating and integrating circular ring-shaped back yoke pieces. An armature iron core (11) of the present invention has a circular ring-shaped back yoke (12) and a plurality of magnetic pole teeth (13) each projecting on one side in a radial direction of said back yoke and arranged in a circumferential direction. Said back yoke is structured by laminating and integrating circular ring-shaped back yoke pieces (20, 21). Said magnetic pole teeth are each structured by laminating and integrating magnetic pole tooth pieces (25, 26) and coupled to said back yoke so as to be able to reciprocate in a circumferential direction between a first position and a second position spaced apart in a circumferential direction.

Description

回転電機の電機子鉄心および電機子の製造方法Armature core of rotating electrical machine and method for manufacturing armature
　この発明は、電動機や発電機などの回転電機の電機子鉄心および電機子の製造方法に関し、特に、電機子鉄心の生産性および回転電機の動作特性を向上できる鉄心構造に関する。 The present invention relates to an armature core of a rotating electric machine such as an electric motor or a generator and a method for manufacturing the armature, and more particularly to an iron core structure capable of improving the productivity of the armature core and the operating characteristics of the rotating electric machine.
　従来の回転電機では、電機子鉄心が分割ヨーク部と磁極ティース部からなる略Ｔ字状の複数の分割積層鉄心を円環状に連結して構成されていた。各分割積層鉄心は、分割ヨーク部と磁極ティース部を有し、互いに積層して結合される第１および第２分割鉄心片を備え、第１分割鉄心片の分割ヨーク部と第２分割鉄心片の分割ヨーク部は、互いに積層された状態においてティース部を挟んで反対方向に延びる接続端部を有し、第１分割鉄心片の接続端部には突起を備え、第２分割鉄心片の接続端部には分割ヨーク部の周方向に沿って延びる長孔を備え、隣接する一方の分割積層鉄心の第１分割鉄心片の突起を他方の分割積層鉄心の第２分割鉄心片の長孔に遊嵌させて、複数個の分割積層鉄心を無端状に連結し、環状形のヨーク部を拡径可能に構成している（例えば、特許文献１参照）。 In a conventional rotating electric machine, an armature core is configured by connecting a plurality of substantially T-shaped split laminated cores each having a split yoke part and a magnetic pole tooth part in an annular shape. Each divided laminated core has a divided yoke portion and a magnetic pole tooth portion, and includes first and second divided core pieces that are stacked and joined to each other, and the divided yoke portion and the second divided core piece of the first divided core piece. The split yoke portion has a connection end portion extending in the opposite direction across the tooth portion in a state of being laminated with each other, and a connection end portion of the first split core piece is provided with a projection, and the connection of the second split core piece The end portion has a long hole extending along the circumferential direction of the divided yoke portion, and the protrusion of the first divided core piece of one adjacent divided laminated core is formed into the long hole of the second divided core piece of the other divided laminated core. A plurality of divided laminated iron cores are connected endlessly by loosely fitting, and the annular yoke portion is configured to be able to expand its diameter (for example, see Patent Document 1).
　また、他の従来の回転電機では、環状ヨークが、相互に回転自在な複数個の積層されたヨーク片から構成され、磁極ティースがそれぞれのヨーク片に形成され、積層されたヨーク片は、それぞれ長孔が形成された第１片と突起が形成された第２片を備え、長孔と突起を介して回転可能に接続されるとともに、突起が長孔内をスライドすることで、隣接する磁極ティース同士の間にそれぞれ形成される間隙の一部を他に比して拡大可能に構成している（例えば、特許文献２参照）。 In another conventional rotating electrical machine, the annular yoke is composed of a plurality of laminated yoke pieces that are rotatable with respect to each other, and magnetic pole teeth are formed on each yoke piece. A first piece having a long hole and a second piece having a protrusion are rotatably connected via the long hole and the protrusion, and the protrusion slides in the long hole so that the adjacent magnetic pole A part of the gap formed between the teeth is configured to be larger than the others (see, for example, Patent Document 2).
特開２００２－２８１６９７号公報Japanese Patent Laid-Open No. 2002-281697 特開２０１０－９８９３８号公報JP 2010-98938 A
　特許文献１，２に示された従来の回転電機では、突起を長孔内をスライドさせて、あるいは突起を長孔内で回動させて、所望の磁極ティース間の隙間を拡大させ、拡大された磁極ティース間の隙間からコイルをスロット内に挿入して、コイルの挿入作業性を高めていた。 In the conventional rotating electrical machines shown in Patent Literatures 1 and 2, the gap between the desired magnetic teeth is enlarged by sliding the protrusion in the long hole or rotating the protrusion in the long hole. The coil was inserted into the slot from the gap between the magnetic pole teeth to improve the coil insertion workability.
　しかしながら、特許文献１，２に示された従来の回転電機では、ある１カ所の磁極ティース間の隙間を拡大するためには、該当する磁極ティースを中心に電機子鉄心を左右に広げる、もしくは狭める作業が必要となり、作業工数が増大し、作業性が低下する。特に、大型あるいは多積層数の電機子鉄心の場合には、電機子鉄心が重くなるので、作業工数の増大に加えて、磁極ティース間の隙間を拡大するために必要な電機子鉄心の変形、移動作業に多大なエネルギーが必要となり、作業性が低下する。 However, in the conventional rotating electrical machines shown in Patent Documents 1 and 2, in order to enlarge the gap between one magnetic pole tooth, the armature core is expanded or narrowed to the left and right around the corresponding magnetic tooth. Work is required, work man-hours increase, and workability decreases. In particular, in the case of a large or multi-layered armature core, the armature core becomes heavier, so in addition to the increase in work man-hours, the deformation of the armature core necessary to expand the gap between the magnetic pole teeth, A lot of energy is required for the moving work, and workability is lowered.
　また、電機子鉄心の真円度の精度が悪いと、回転電機の動作特性に影響を及ぼすことになる。特許文献１，２に示された従来の回転電機では、電機子鉄心が複数個の分割積層鉄心（ヨーク片）を連結部で連結して無端状に構成されているので、分割積層鉄心（ヨーク片）の連結部における剛性が小さくなり、これを起点として電機子鉄心の形状が崩れやすくなっている。そこで、コイルの電機子鉄心への装着が完了した後、電機子鉄心を円環状に戻す際に、電機子鉄心の真円度を高精度に確保することが困難となり、回転電機の動作特性の低下をもたらす。 Also, if the accuracy of the roundness of the armature core is poor, the operating characteristics of the rotating electrical machine will be affected. In the conventional rotating electrical machines shown in Patent Documents 1 and 2, since the armature core is configured to be endless by connecting a plurality of divided laminated cores (yoke pieces) at a connecting portion, the divided laminated core (yoke) The rigidity at the connecting portion of the piece is small, and the shape of the armature core is easily broken from this. Therefore, after the mounting of the coil to the armature core is completed, when returning the armature core to an annular shape, it becomes difficult to ensure the roundness of the armature core with high accuracy, and the operating characteristics of the rotating electrical machine are reduced. Bring about a decline.
　この問題に対して、分割積層鉄心（ヨーク片）の連結部を溶接などにより固定して剛性を高め、あるいは円環状に戻した電機子鉄心をハウジングなどの円筒状部材に圧入や焼き嵌めなどにより固定して剛性を高めることができるが、作業工数が著しく増大してしまう。また、圧入や焼き嵌めによる方法では、ハウジングの剛性を大きく、かつハウジングの圧入面の加工精度を高くする必要があり、高コスト化をもたらすことになる。 To solve this problem, the connecting part of the split laminated iron core (yoke piece) is fixed by welding or the like to increase rigidity, or the armature core that has been returned to the annular shape is pressed into a cylindrical member such as a housing or shrink-fitted. Although it can be fixed to increase the rigidity, the number of work steps is significantly increased. Further, in the method by press fitting or shrink fitting, it is necessary to increase the rigidity of the housing and to increase the processing accuracy of the press fitting surface of the housing, resulting in high cost.
　この発明は、上記のような課題を解決するためになされたものであり、一の磁極ティースを周方向に移動させるだけで対象のスロット開口幅を拡大できるようにして、コイルの装着作業性を向上させることができるとともに、バックヨークを円環状のバックヨーク片を積層、一体化して構成して、鉄心の真円度の精度を高め、かつ鉄心の剛性を高めることができる回転電機の電機子鉄心および電機子の製造方法を得ることを目的とする。 The present invention has been made to solve the above-described problems, and can increase the slot opening width of a target by simply moving one magnetic pole tooth in the circumferential direction, thereby improving the coil mounting workability. An armature for a rotating electrical machine that can be improved and that the back yoke is constructed by laminating and integrating an annular back yoke piece to improve the accuracy of the roundness of the iron core and increase the rigidity of the iron core. It aims at obtaining the manufacturing method of an iron core and an armature.
　この発明に係る回転電機の電機子鉄心は、円環状のバックヨーク、および、それぞれ、上記バックヨークの径方向一側に突出して周方向に配列された複数の磁極ティースを有し、上記バックヨークが、円環状のバックヨーク片を積層、一体化して構成され、上記複数の磁極ティースが、それぞれ、磁極ティース片を積層、一体化して構成され、周方向に離間する第１位置と第２位置との間を周方向に往復移動可能に上記バックヨークに連結されている。 An armature core of a rotating electrical machine according to the present invention includes an annular back yoke, and a plurality of magnetic pole teeth each protruding in the radial direction of the back yoke and arranged in the circumferential direction. Is formed by laminating and integrating annular back yoke pieces, and the plurality of magnetic pole teeth are constituted by laminating and integrating magnetic pole teeth pieces, respectively, and are separated from each other in the circumferential direction. Are connected to the back yoke so as to be reciprocally movable in the circumferential direction.
　この発明では、複数の磁極ティースが、それぞれ、周方向に離間する第１位置と第２位置との間を周方向に往復移動可能に円環状のバックヨークに連結されているので、一の磁極ティースを例えば第１位置に移動させることで、スロット開口幅を拡大できる。したがって、従来技術のように、ある１カ所のスロット開口幅を拡大するためには、該当する磁極ティースを中心に電機子鉄心を左右に広げる必要がなく、コイルを装着する工数を削減でき、コイルの装着作業性が高められる。そこで、大型あるいは多積層数の電機子鉄心であっても、少ないエネルギーでスロット開口幅を拡大でき、コイルの装着作業性を向上できる。 In the present invention, each of the plurality of magnetic pole teeth is connected to the annular back yoke so as to be reciprocally movable in the circumferential direction between the first position and the second position that are separated in the circumferential direction. For example, the slot opening width can be increased by moving the teeth to the first position. Therefore, as in the prior art, in order to increase the slot opening width at a certain place, it is not necessary to expand the armature core left and right around the corresponding magnetic teeth, and the man-hour for mounting the coil can be reduced. Mounting workability is improved. Therefore, even with a large or multi-layered armature core, the slot opening width can be increased with less energy, and the coil mounting workability can be improved.
　また、バックヨークが円環状のバックヨーク片を積層、一体化して構成されているので、電機子鉄心の真円度の精度が高められ、回転電機の動作特性を向上させることができる。さらに、バックヨークが円環状に構成されているので、電機子鉄心の剛性を高めるための、溶接、圧入、焼き嵌めなどの工程が不要となり、作業工数を削減できるとともに、低コスト化が図られる。 Also, since the back yoke is constructed by laminating and integrating the annular back yoke pieces, the accuracy of the roundness of the armature core can be improved, and the operating characteristics of the rotating electrical machine can be improved. Furthermore, since the back yoke is configured in an annular shape, steps such as welding, press-fitting, and shrink fitting for increasing the rigidity of the armature core are not required, and the number of work steps can be reduced and the cost can be reduced. .
この発明の実施の形態１に係る回転電機を示す平面図である。It is a top view which shows the rotary electric machine which concerns on Embodiment 1 of this invention. この発明の実施の形態１に係る回転電機における電機子鉄心の磁極ティース周りを示す平面図である。It is a top view which shows the circumference | surroundings of the magnetic pole teeth of the armature core in the rotary electric machine which concerns on Embodiment 1 of this invention. この発明の実施の形態１に係る回転電機における電機子鉄心を構成する第１バックヨーク片および第１磁極ティース片の配列状態を示す平面図である。It is a top view which shows the arrangement | sequence state of the 1st back yoke piece and 1st magnetic pole tooth piece which comprise the armature core in the rotary electric machine which concerns on Embodiment 1 of this invention. この発明の実施の形態１に係る回転電機における電機子鉄心を構成する第１バックヨーク片および第１磁極ティースの配列状態を示す要部平面図である。It is a principal part top view which shows the arrangement | sequence state of the 1st back yoke piece and 1st magnetic pole teeth which comprise the armature core in the rotary electric machine which concerns on Embodiment 1 of this invention. この発明の実施の形態１に係る回転電機における電機子鉄心を構成する第２バックヨーク片および第２磁極ティース片の配列状態を示す平面図である。It is a top view which shows the arrangement | sequence state of the 2nd back yoke piece and the 2nd magnetic pole tooth piece which comprise the armature core in the rotary electric machine which concerns on Embodiment 1 of this invention. この発明の実施の形態１に係る回転電機における電機子鉄心を構成する第２バックヨーク片および第２磁極ティース片の配列状態を示す要部平面図である。It is a principal part top view which shows the arrangement | sequence state of the 2nd back yoke piece and the 2nd magnetic pole tooth piece which comprise the armature core in the rotary electric machine which concerns on Embodiment 1 of this invention. この発明の実施の形態１に係る回転電機における電機子鉄心の磁極ティースの移動動作を説明する図である。It is a figure explaining the movement operation | movement of the armature core magnetic pole teeth in the rotary electric machine which concerns on Embodiment 1 of this invention. この発明の実施の形態１に係る回転電機における電機子鉄心に電機子コイルを装着する方法を説明する図である。It is a figure explaining the method of mounting | wearing an armature coil with the armature core in the rotary electric machine which concerns on Embodiment 1 of this invention. この発明の実施の形態１に係る回転電機における実施態様の電機子鉄心を構成する第３バックヨーク片および第２磁極ティース片の配列状態を示す平面図である。It is a top view which shows the arrangement | sequence state of the 3rd back yoke piece and the 2nd magnetic pole teeth piece which comprise the armature core of the embodiment in the rotary electric machine which concerns on Embodiment 1 of this invention. この発明の実施の形態２に係る回転電機における電機子鉄心の磁極ティース周りを示す要部拡大図である。It is a principal part enlarged view which shows the surroundings of the magnetic pole teeth of the armature core in the rotary electric machine which concerns on Embodiment 2 of this invention. この発明の実施の形態２に係る回転電機における電機子鉄心の磁極ティース周りを示す要部拡大図である。It is a principal part enlarged view which shows the surroundings of the magnetic pole teeth of the armature core in the rotary electric machine which concerns on Embodiment 2 of this invention. この発明の実施の形態３に係る回転電機における電機子鉄心の磁極ティース周りを示す要部拡大図である。It is a principal part enlarged view which shows the surroundings of the magnetic pole teeth of the armature core in the rotary electric machine which concerns on Embodiment 3 of this invention. この発明の実施の形態４に係る回転電機における電機子鉄心の磁極ティース周りを示す要部拡大図である。It is a principal part enlarged view which shows the surroundings of the magnetic pole teeth of the armature core in the rotary electric machine which concerns on Embodiment 4 of this invention. この発明の実施の形態５に係る回転電機を示す平面図である。It is a top view which shows the rotary electric machine which concerns on Embodiment 5 of this invention. この発明の実施の形態５に係る回転電機における電機子鉄心を構成する第１バックヨーク片および第１磁極ティース片の配列状態を示す平面図である。It is a top view which shows the arrangement | sequence state of the 1st back yoke piece and 1st magnetic pole tooth piece which comprise the armature core in the rotary electric machine which concerns on Embodiment 5 of this invention. この発明の実施の形態５に係る回転電機における電機子鉄心を構成する第２バックヨーク片および第２磁極ティース片の配列状態を示す平面図である。It is a top view which shows the arrangement | sequence state of the 2nd back yoke piece and 2nd magnetic pole tooth piece which comprise the armature core in the rotary electric machine which concerns on Embodiment 5 of this invention. この発明の実施の形態５に係る回転電機における電機子鉄心に電機子コイルを装着する方法を説明する図である。It is a figure explaining the method of mounting | wearing an armature coil with the armature core in the rotary electric machine which concerns on Embodiment 5 of this invention. この発明の実施の形態６に係る回転電機における電機子鉄心の磁極ティースの移動動作を説明する図である。It is a figure explaining the movement operation | movement of the magnetic teeth of the armature core in the rotary electric machine which concerns on Embodiment 6 of this invention. この発明の実施の形態７に係る回転電機における電機子鉄心の磁極ティース周りを示す要部平面図である。It is a principal part top view which shows the surroundings of the magnetic pole teeth of the armature core in the rotary electric machine which concerns on Embodiment 7 of this invention. この発明の実施の形態８に係る回転電機における電機子鉄心を示す平面図である。It is a top view which shows the armature core in the rotary electric machine which concerns on Embodiment 8 of this invention. この発明の実施の形態８に係る回転電機における電機子鉄心を構成する第１バックヨーク片および第１磁極ティース片の配列状態を示す要部平面図である。It is a principal part top view which shows the arrangement | sequence state of the 1st back yoke piece and 1st magnetic pole tooth piece which comprise the armature core in the rotary electric machine which concerns on Embodiment 8 of this invention. この発明の実施の形態８に係る回転電機における電機子鉄心を構成する第２バックヨーク片および第２磁極ティース片の配列状態を示す要部平面図である。It is a principal part top view which shows the arrangement | sequence state of the 2nd back yoke piece and the 2nd magnetic pole tooth piece which comprise the armature core in the rotary electric machine which concerns on Embodiment 8 of this invention.
　以下、本発明による回転電機の電機子鉄心および電機子の製造方法の好適な実施の形態につき図面を用いて説明する。
　実施の形態１．
　図１はこの発明の実施の形態１に係る回転電機を示す平面図、図２はこの発明の実施の形態１に係る回転電機における電機子鉄心の磁極ティース周りを示す平面図、図３はこの発明の実施の形態１に係る回転電機における電機子鉄心を構成する第１バックヨーク片および第１磁極ティース片の配列状態を示す平面図、図４はこの発明の実施の形態１に係る回転電機における電機子鉄心を構成する第１バックヨーク片および第１磁極ティース片の配列状態を示す要部平面図、図５はこの発明の実施の形態１に係る回転電機における電機子鉄心を構成する第２バックヨーク片および第２磁極ティース片の配列状態を示す平面図、図６はこの発明の実施の形態１に係る回転電機における電機子鉄心を構成する第２バックヨーク片および第２磁極ティース片の配列状態を示す要部平面図である。図７はこの発明の実施の形態１に係る回転電機における電機子鉄心の磁極ティースの移動動作を説明する図であり、図７の（ａ）は磁極ティースが第２位置に位置している状態を示し、図７の（ｂ）は一の磁極ティースが第１位置に位置している状態を示している。図８はこの発明の実施の形態１に係る回転電機における電機子鉄心に電機子コイルを装着する方法を説明する図である。 Hereinafter, preferred embodiments of an armature core and an armature manufacturing method for a rotating electric machine according to the present invention will be described with reference to the drawings.
Embodiment 1 FIG.
FIG. 1 is a plan view showing a rotating electrical machine according to Embodiment 1 of the present invention, FIG. 2 is a plan view showing around the magnetic teeth of the armature core in the rotating electrical machine according to Embodiment 1 of the present invention, and FIG. FIG. 4 is a plan view showing an arrangement state of the first back yoke piece and the first magnetic pole tooth piece constituting the armature core in the rotary electric machine according to the first embodiment of the invention, and FIG. 4 is a rotary electric machine according to the first embodiment of the invention. FIG. 5 is a main part plan view showing an arrangement state of the first back yoke piece and the first magnetic pole tooth piece constituting the armature core in FIG. 5, and FIG. 5 is a diagram showing the armature core in the rotary electric machine according to Embodiment 1 of the present invention. FIG. 6 is a plan view showing the arrangement of the two back yoke pieces and the second magnetic pole tooth pieces, and FIG. 6 shows the second back yoke piece and the second magnetic pole tee constituting the armature core in the rotary electric machine according to Embodiment 1 of the present invention. Is a plan view showing an arrangement state of the scan strip. FIG. 7 is a view for explaining the movement operation of the magnetic teeth of the armature core in the rotary electric machine according to Embodiment 1 of the present invention. FIG. 7 (a) shows a state where the magnetic teeth are located at the second position. FIG. 7B shows a state in which one magnetic pole tooth is located at the first position. FIG. 8 is a view for explaining a method of mounting the armature coil on the armature core in the rotary electric machine according to Embodiment 1 of the present invention.
　図１および図２において、回転電機１００は、ハウジング（図示せず）内に配設された回転子１と、回転子１との間に一定の空隙を介して回転子１を囲繞するようにハウジングに同軸に保持された電機子１０と、を備えている。 In FIG. 1 and FIG. 2, the rotating electrical machine 100 surrounds the rotor 1 via a certain gap between the rotor 1 disposed in a housing (not shown) and the rotor 1. And an armature 10 held coaxially in the housing.
　回転子１は、軸心位置に挿入された回転軸２に固着された回転子鉄心３と、回転子鉄心３の外周面に配設された磁石４と、を備えている。ここでは、１０個の磁石４が回転子鉄心３の外周面に周方向に等角ピッチで配設されている。 The rotor 1 includes a rotor core 3 fixed to a rotary shaft 2 inserted at the axial center position, and a magnet 4 disposed on the outer peripheral surface of the rotor core 3. Here, ten magnets 4 are arranged on the outer peripheral surface of the rotor core 3 at an equiangular pitch in the circumferential direction.
　電機子１０は、磁極ティース１３が、それぞれ、円環状のバックヨーク１２の内周壁面から径方向内方に突出して、周方向に等角ピッチで複数本、ここでは２４本配設された電機子鉄心１１と、それぞれ、導体線を周方向に連続する２本の磁極ティース１３の両側に位置するスロット１４に複数回巻き回して作製されたコイル１５ａから構成される電機子コイル１５と、電機子鉄心１１と電機子コイル１５との間に介在する絶縁体（図示せず）と、を備える。 The armature 10 is an electric machine in which a plurality of magnetic pole teeth 13 are arranged radially inwardly projecting from the inner peripheral wall surface of the annular back yoke 12 and are arranged at a regular pitch in the circumferential direction. An armature coil 15 composed of a core core 11, a coil 15 a formed by winding a conductor wire around a slot 14 positioned on both sides of two magnetic pole teeth 13 that are continuous in the circumferential direction; And an insulator (not shown) interposed between the core iron core 11 and the armature coil 15.
　バックヨーク１２は、図３から図６に示されるように、電磁鋼板から打ち抜かれた円環状の第１および第２バックヨーク片２０，２１を備える。そして、矩形の切り欠き部２０ａが、それぞれ、径方向内方に開口するように、第１バックヨーク片２０の内周側に周方向に等角ピッチで２４個形成されている。さらに、抜きカシメ部２０ｂが、それぞれ、切り欠き部２０ａ間に位置するように、第１バックヨーク片２０の外周側に等角ピッチで形成されている。また、長穴部２１ａが、それぞれ、穴方向を周方向として、第２バックヨーク片２１の内周側に周方向に等角ピッチで２４個形成されている。さらに、抜きカシメ部２１ｂが、それぞれ、長穴部２１ａ間に位置するように、第２バックヨーク片２１の外周側に等角ピッチで形成されている。そして、第１バックヨーク片２０と第２バックヨーク片２１とを重ねた際に、抜きカシメ部２０ｂ，２１ｂが重なり、長穴部２１ａが切り欠き部２０ａ内に位置する。ここで、長穴部２１ａの穴形状は、周方向に延びる内周側および外周側の両縁部が、それぞれ、第２バックヨーク片２１の軸心を中心とする円筒面の一部で構成され、周方向の両端面が、それぞれ、両縁部間の間隔（穴幅）を直径とする円筒面の一部で構成された、円弧形状となっている。 As shown in FIGS. 3 to 6, the back yoke 12 includes annular first and second back yoke pieces 20, 21 punched from an electromagnetic steel plate. Then, 24 rectangular cutout portions 20a are formed at equiangular pitches in the circumferential direction on the inner circumferential side of the first back yoke piece 20 so as to open radially inward. Further, the punched caulking portions 20b are formed at an equiangular pitch on the outer peripheral side of the first back yoke piece 20 so as to be positioned between the cutout portions 20a. In addition, 24 long hole portions 21a are formed at equiangular pitches in the circumferential direction on the inner circumferential side of the second back yoke piece 21 with the hole direction as the circumferential direction. Further, the punched caulking portions 21b are formed at equiangular pitches on the outer peripheral side of the second back yoke piece 21 so as to be positioned between the long hole portions 21a. And when the 1st back yoke piece 20 and the 2nd back yoke piece 21 are piled up, the extraction caulking parts 20b and 21b overlap, and the long hole part 21a is located in the notch part 20a. Here, the hole shape of the long hole portion 21 a is configured such that both the inner peripheral side and the outer peripheral side edge portions extending in the circumferential direction are part of a cylindrical surface centering on the axis of the second back yoke piece 21. In addition, both end faces in the circumferential direction each have an arc shape formed by a part of a cylindrical surface having a distance (hole width) between both edges as a diameter.
　磁極ティース１３は、図３から図６に示されるように、電磁鋼板から打ち抜かれた第１および第２磁極ティース片２５，２６を備える。第１磁極ティース片２５は、基部２５ａと、基部２５ａの先端から周方向両側に突出する鍔部２５ｂと、基部２５ａの中央位置に形成された抜きカシメ部２５ｃと、基部２５ａの根元部の周方向中央から径方向外方に突出する突起部２５ｄと、突起部２５ｄの一面の突出端側にダボ状に形成された、長穴部２１ａの穴幅よりわずかに小さい直径の軸部２５ｅと、を備える。第２磁極ティース片２６は、基部２６ａと、基部２６ａの先端から周方向両側に突出する鍔部２６ｂと、基部２６ａの中央位置に形成された抜きカシメ部２６ｃと、を備える。第１磁極ティース片２５は、突起部２５ｄおよび軸部２５ｅを除いて、第２磁極ティース片２６と同一の外形形状に形成されている。そして、第１磁極ティース片２５と第２磁極ティース片２６とを重ねた際に、抜きカシメ部２５ｃ，２６ｃが重なる。 As shown in FIGS. 3 to 6, the magnetic pole teeth 13 include first and second magnetic pole teeth pieces 25 and 26 punched from an electromagnetic steel sheet. The first magnetic pole tooth piece 25 includes a base portion 25a, a flange portion 25b protruding from the tip of the base portion 25a to both sides in the circumferential direction, a punched caulking portion 25c formed at the center position of the base portion 25a, and a periphery of the base portion of the base portion 25a. A projecting portion 25d projecting radially outward from the center in the direction, a shaft portion 25e formed in a dowel shape on the projecting end side of one surface of the projecting portion 25d, and having a diameter slightly smaller than the hole width of the long hole portion 21a; Is provided. The second magnetic pole tooth piece 26 includes a base portion 26a, a flange portion 26b that protrudes from the tip of the base portion 26a to both sides in the circumferential direction, and a punching portion 26c that is formed at the center position of the base portion 26a. The first magnetic pole tooth piece 25 is formed in the same outer shape as that of the second magnetic pole tooth piece 26 except for the protruding portion 25d and the shaft portion 25e. And when the 1st magnetic pole tooth piece 25 and the 2nd magnetic pole tooth piece 26 are piled up, the extraction caulking part 25c, 26c overlaps.
　電機子鉄心１１を作製するには、まず、第１バックヨーク片２０を配置し、ついで、図３および図４に示されるように、それぞれ、突起部２５ｄを切り欠き部２０ａ内に挿入して、基部２５ａを径方向内方に突出させて、第１磁極ティース片２５を第１バックヨーク片２０の内周側に、かつ第１バックヨーク片２０と面一として、周方向に等角ピッチで配置する。ついで、軸部２５ｅを長穴部２１ａ内に入れるように、第２バックヨーク片２１を第１バックヨーク片２０上に配置する。さらに、第２磁極ティース片２６を第１磁極ティース片２５のそれぞれの上に重ねて、第２バックヨーク片２１と面一に配置する。この操作を必要回数繰り返し行い、第１および第２バックヨーク片２０，２１の積層体が抜きカシメ部２０ｂ，２１ｂの嵌合により固定、一体化され、円環状のバックヨーク１２が形成される。また、第１および第２磁極ティース片２５，２６の積層体が抜きカシメ部２５ｃ，２６ｃの嵌合により固定、一体化され、磁極ティース１３が形成される。 In order to produce the armature core 11, first, the first back yoke piece 20 is disposed, and then, as shown in FIGS. 3 and 4, the protruding portions 25d are respectively inserted into the notches 20a. The base portion 25a protrudes radially inward, the first magnetic pole tooth piece 25 is on the inner peripheral side of the first back yoke piece 20, and is flush with the first back yoke piece 20, and is equiangular in the circumferential direction. Place with. Next, the second back yoke piece 21 is disposed on the first back yoke piece 20 so that the shaft portion 25e is placed in the elongated hole portion 21a. Further, the second magnetic pole tooth piece 26 is placed on each of the first magnetic pole tooth pieces 25 so as to be flush with the second back yoke piece 21. This operation is repeated as many times as necessary, and the laminated body of the first and second back yoke pieces 20 and 21 is fixed and integrated by fitting the crimping portions 20b and 21b, thereby forming the annular back yoke 12. In addition, the laminated body of the first and second magnetic pole teeth pieces 25 and 26 is fixed and integrated by fitting the caulking portions 25c and 26c, so that the magnetic pole teeth 13 are formed.
　このように作製された電機子鉄心１１は、軸部２５ｅが長穴部２１ａ内を長穴部２１ａの穴方向、すなわち周方向にスライド移動可能となっている。そこで、磁極ティース１３は、軸部２５ｅが長穴部２１ａの周方向一端に接する第１位置と、軸部２５ｅが長穴部２１ａの周方向他端に接する第２位置との間を往復移動可能に、バックヨーク１２に取り付けられている。そして、図７の（ａ）に示されるように、磁極ティース１３のそれぞれの軸部２５ｅが長穴部２１ａの周方向他端に接すると、隣り合う磁極ティース１３間の隙間、すなわちスロット開口幅が縮小された状態となる。また、図７の（ｂ）に示されるように、一の磁極ティース１３の軸部２５ｅが長穴部２１ａの周方向一端に接すると、隣り合う磁極ティース１３間の隙間、すなわちスロット開口幅が拡大された状態となる。 In the armature core 11 manufactured in this way, the shaft portion 25e is slidable in the elongated hole portion 21a in the hole direction of the elongated hole portion 21a, that is, in the circumferential direction. Therefore, the magnetic teeth 13 reciprocate between a first position where the shaft portion 25e contacts one end in the circumferential direction of the long hole portion 21a and a second position where the shaft portion 25e contacts the other circumferential end of the long hole portion 21a. It is possible to attach to the back yoke 12. Then, as shown in FIG. 7A, when each shaft portion 25e of the magnetic pole teeth 13 is in contact with the other circumferential end of the elongated hole portion 21a, a gap between adjacent magnetic pole teeth 13, that is, a slot opening width is obtained. Is reduced. Further, as shown in FIG. 7B, when the shaft portion 25e of one magnetic pole tooth 13 is in contact with one end in the circumferential direction of the elongated hole portion 21a, the gap between adjacent magnetic pole teeth 13, that is, the slot opening width is increased. It becomes an enlarged state.
　ついで、コイル１５ａの挿入作業について図８を参照しつつ説明する。なお、図８中、説明の便宜上、周方向に連続する２本の磁極ティース１３の一側に位置するスロット１４をスロット１４1とし、他側に位置するスロット１４をスロット１４2とし、スロット１４1の周方向一側の磁極ティース１３を磁極ティース１３1とし、スロット１４1の周方向他側の磁極ティース１３を磁極ティース１３2、スロット１４2の周方向一側の磁極ティース１３を磁極ティース１３3とし、スロット１４2の周方向他側の磁極ティース１３を磁極ティース１３4とする。 Next, the operation of inserting the coil 15a will be described with reference to FIG. In FIG. 8, for convenience of explanation, a slot 14 located on one side of two magnetic pole teeth 13 continuous in the circumferential direction is referred to as a slot 14 1 , a slot 14 located on the other side is designated as a slot 14 2 , and a slot 14 1 is the magnetic teeth 13 1 , the magnetic teeth 13 on the other circumferential side of the slot 14 1 are the magnetic teeth 13 2 , and the magnetic teeth 13 on the circumferential one side of the slots 14 2 are the magnetic teeth. and 13 3, the magnetic teeth 13 of circumferential other side slot 14 2 and the magnetic pole teeth 13 4.
　まず、軸部２５ｅが長穴部２１ａの周方向他端に接するように磁極ティース１３をスライド移動させ、磁極ティース１３のそれぞれを第２位置に位置させる。これにより、隣り合う磁極ティース１３間のスロット開口部幅が縮小された状態となる。コイル１５ａは、それぞれ、導体線を環状に複数回巻いて作製される。 First, the magnetic teeth 13 are slid so that the shaft portion 25e contacts the other circumferential end of the elongated hole portion 21a, and each of the magnetic teeth 13 is positioned at the second position. As a result, the slot opening width between adjacent magnetic teeth 13 is reduced. Each of the coils 15a is produced by winding a conductor wire a plurality of times in a ring shape.
　ついで、周方向に連続する２本の磁極ティース１３の両側に位置するスロット１４1，１４2のそれぞれにおいて、軸部２５ｅが長穴部２１ａの周方向一端に接するように、スロット１４1，１４2の周方向一側に位置する磁極ティース１３1，１３3を第１位置にスライド移動させ、スロット開口幅を拡大する。そして、コイル１５ａの導体線束を拡大されたスロット開口からスロット１４1，１４2に挿入する。ついで、スロット１４1，１４2の周方向一側に位置する磁極ティース１３1，１３3をスライド移動させて第２位置に戻し、１つのコイル１５ａが電機子鉄心１１に装着される。この操作を繰り返し行い、コイル１５ａは、図８中、反時計回りに、１スロットピッチずつすらしながら、１つずつ電機子鉄心１１に装着される。 Then, in the respective slots 14 1, 14 2 located on either side of the two pole tooth 13 which circumferentially continuous, as shaft portion 25e is in contact with one circumferential end of the long hole 21a, the slots 14 1, 14 The magnetic pole teeth 13 1 , 13 3 located on one circumferential side of 2 are slid to the first position, and the slot opening width is expanded. Then, the conductor wire bundle of the coil 15a is inserted into the slots 14 1 and 14 2 from the enlarged slot opening. Next, the magnetic pole teeth 13 1 , 13 3 located on one side in the circumferential direction of the slots 14 1 , 14 2 are slid and returned to the second position, and one coil 15 a is attached to the armature core 11. This operation is repeated, and the coils 15a are mounted on the armature core 11 one by one, even by one slot pitch counterclockwise in FIG.
　ここで、３本目以降のコイル１５ａを電機子鉄心１１に装着するときには、周方向に連続する２本の磁極ティース１３2，１３3の一側に位置するスロット１４1には他のコイル１５ａの導体線束が挿入されていないが、周方向に連続する２本の磁極ティース１３2，１３3の他側に位置するスロット１４2には他のコイル１５ａの導体線束が挿入されている。他のコイル１５ａの導体線束が挿入されていないスロット１４1には、コイル１５ａの導体線束の挿入が容易である。しかし、他のコイル１５ａの導体線束が挿入されているスロット１４2には、コイル１５ａの導体線束の挿入が困難となる。 Here, when the third and subsequent coils 15a are attached to the armature core 11, the slots 14 1 positioned on one side of the two magnetic pole teeth 13 2 and 13 3 that are continuous in the circumferential direction have other coils 15a. The conductor wire bundle is not inserted, but the conductor wire bundle of the other coil 15a is inserted into the slot 14 2 positioned on the other side of the two magnetic pole teeth 13 2 and 13 3 that are continuous in the circumferential direction. The slot 14 1 to conductor wire bundles of the other coil 15a is not inserted, it is easy to insert the conductor wire bundles of the coil 15a. However, it is difficult to insert the conductor wire bundle of the coil 15a into the slot 14 2 in which the conductor wire bundle of the other coil 15a is inserted.
　この実施の形態１では、スロット１４1，１４2の周方向一側に位置する磁極ティース１３1，１３3を第１位置にスライド移動させ、スロット開口幅を拡大した後、コイル１５ａの導体線束をスロット１４1，１４2に挿入するので、他のコイル１５ａの導体線束が挿入されているスロット１４2にも、コイル１５ａの導体線束を容易に挿入できる。また、コイル１５ａの導体線束をスロット１４2に挿入した後、磁極ティース１３3を第２位置に戻すので、磁極ティース１３4が第２位置側に押圧され、磁極ティース１３4の軸部２５ｅが長穴部２１ａの周方向他端に当接し、磁極ティース１３4が第２位置に位置決め固定される。 In the first embodiment, the magnetic pole teeth 13 1 and 13 3 positioned on one side in the circumferential direction of the slots 14 1 and 14 2 are slid to the first position to increase the slot opening width, and then the conductor wire bundle of the coil 15a. Is inserted into the slots 14 1 and 14 2 , the conductor wire bundle of the coil 15a can be easily inserted into the slot 14 2 into which the conductor wire bundle of the other coil 15a is inserted. In addition, after inserting the conductor wire bundle of the coil 15a into the slot 14 2 , the magnetic pole teeth 13 3 are returned to the second position, so that the magnetic pole teeth 13 4 are pressed to the second position side and the shaft portion 25e of the magnetic pole teeth 13 4 is The magnetic pole teeth 13 4 are positioned and fixed at the second position by coming into contact with the other circumferential end of the elongated hole portion 21a.
　このように、実施の形態１によれば、バックヨーク１２が円環状の打ち抜かれた第１および第２バックヨーク片２０，２１を積層して作製され、磁極ティース１３がバックヨーク１２の内周側に位置して第１位置と第２位置との間を周方向に往復移動可能にバックヨーク１２に連結されている。そこで、導体線束が挿入されているスロット１４の一側に位置する磁極ティース１３を第１位置に移動させて、スロット開口幅を拡大し、コイル１５ａの導体電束を拡大されたスロット開口からスロット１４に挿入できる。これにより、コイル１５ａの電機子鉄心１１への装着が容易となり、コイル１５ａの装着作業性が向上される。さらに、コイル１５ａをスロット１４内に整列して挿入しやすくなり、占積率が向上され、回転電機１００の動作特性を向上させることができる。 As described above, according to the first embodiment, the back yoke 12 is manufactured by stacking the first and second back yoke pieces 20 and 21 that are punched in an annular shape, and the magnetic pole teeth 13 are formed on the inner periphery of the back yoke 12. It is connected to the back yoke 12 so as to be reciprocally movable in the circumferential direction between the first position and the second position. Therefore, the magnetic pole teeth 13 positioned on one side of the slot 14 into which the conductor wire bundle is inserted are moved to the first position, the slot opening width is expanded, and the conductor electric flux of the coil 15a is expanded from the expanded slot opening to the slot. 14 can be inserted. As a result, the coil 15a can be easily mounted on the armature core 11, and the mounting workability of the coil 15a is improved. Furthermore, the coil 15a can be easily inserted into the slot 14 in an aligned manner, the space factor can be improved, and the operating characteristics of the rotating electrical machine 100 can be improved.
　バックヨーク１２を変形・移動させることなく、磁極ティース１３を周方向移動させるのみでスロット開口幅を拡大でき、コイル１５ａのスロット１４への挿入作業性を向上させることができる。そこで、大径あるいは積層数の多い電機子鉄心１１に対しても、少ないエネルギーを要するのみで、同様の効果が得られる。
　バックヨーク１２が円環状の第１および第２バックヨーク片２０，２１を積層、一体化して作製されているので、鉄心の真円度が高められ、回転電機１００の動作特性を向上させることができる。また、コイル１５ａの電機子鉄心１１への装着が完了した後、電機子鉄心１１を円環状に戻す必要がないので、電機子鉄心１１の真円度を高精度に確保することができる。 The slot opening width can be increased only by moving the magnetic teeth 13 in the circumferential direction without deforming and moving the back yoke 12, and the workability of inserting the coil 15a into the slot 14 can be improved. Therefore, the same effect can be obtained for the armature core 11 having a large diameter or a large number of layers only by requiring less energy.
Since the back yoke 12 is formed by laminating and integrating the annular first and second back yoke pieces 20 and 21, the roundness of the iron core can be increased and the operating characteristics of the rotating electrical machine 100 can be improved. it can. Moreover, since it is not necessary to return the armature core 11 to an annular shape after the coil 15a is attached to the armature core 11, the roundness of the armature core 11 can be ensured with high accuracy.
　さらに、特許文献１，２では、電機子鉄心が複数の分割積層鉄心を無端状に連結して構成されているので、電機子鉄心の剛性を高めるために、分割積層鉄心を構成する連結部を溶接などにより固定する工程、あるいは円環状に戻した電機子鉄心をハウジングなどの円筒状部材に圧入や焼き嵌めなどにより固定する工程が必要であった。実施の形態１では、特許文献１，２で必要であったこれらの工程が不要となり、作業工数の削減が図られるとともに、低コスト化が図られる。 Further, in Patent Documents 1 and 2, since the armature core is configured by connecting a plurality of divided laminated cores endlessly, in order to increase the rigidity of the armature core, a connecting portion constituting the divided laminated core is provided. A step of fixing by welding or the like, or a step of fixing the armature core returned to an annular shape to a cylindrical member such as a housing by press fitting or shrink fitting is necessary. In the first embodiment, these steps required in Patent Documents 1 and 2 are not required, and the number of work steps can be reduced and the cost can be reduced.
　なお、上記実施の形態１では、電機子鉄心１１は、第１バックヨーク片２０と第１磁極ティース片２５の組と、第２バックヨーク片２１と第２磁極ティース片２６の組とを交互に積層して構成されているが、電機子鉄心は、第１および第２バックヨーク片２０，２１と第１および第２磁極ティース片２５，２６のみで構成する必要はなく、第１バックヨーク片２０と第１磁極ティース片２５の組と、第２バックヨーク片２１と第２磁極ティース片２６の組との積層体を少なくとも１つ有していればよい。 In the first embodiment, the armature core 11 includes the first back yoke piece 20 and the first magnetic pole tooth piece 25, and the second back yoke piece 21 and the second magnetic pole tooth piece 26 alternately. However, the armature core does not have to be composed of only the first and second back yoke pieces 20 and 21 and the first and second magnetic pole teeth pieces 25 and 26, but the first back yoke. It suffices to have at least one laminated body of a set of the piece 20 and the first magnetic pole tooth piece 25 and a set of the second back yoke piece 21 and the second magnetic pole tooth piece 26.
　例えば、図９に示されるように、電磁鋼板から打ち抜かれた円環状の第３バックヨーク片２２および第２磁極ティース片２６を用意する。第３バックヨーク片２２は長穴部２１ａが省略されている点を除いて、第２バックヨーク片２１と同様に作製されている。なお、抜きカシメ部２２ｂが抜きカシメ部２１ｂに相当する。そして、電機子鉄心を構成する一部の積層部分を、第１および第２バックヨーク片２０，２１と第１および第２磁極ティース片２５，２６を積層して構成し、電機子鉄心を構成する残る積層部分を、第３バックヨーク片２２と第２磁極ティース片２６を積層して構成してもよい。この場合、バックヨーク１２における切り欠き部２０ａの占める割合が低減され、電機子鉄心を構成する鉄量を増加できるので、回転電機の動作特性を向上、例えばモータの効率を向上させることができる。 For example, as shown in FIG. 9, an annular third back yoke piece 22 and a second magnetic pole tooth piece 26 punched from an electromagnetic steel sheet are prepared. The third back yoke piece 22 is manufactured in the same manner as the second back yoke piece 21 except that the long hole portion 21a is omitted. Note that the blanking portion 22b corresponds to the blanking portion 21b. Then, a part of the laminated parts constituting the armature core is constituted by laminating the first and second back yoke pieces 20 and 21 and the first and second magnetic pole teeth pieces 25 and 26 to constitute the armature core. The remaining laminated portion may be configured by laminating the third back yoke piece 22 and the second magnetic pole piece 26. In this case, the proportion of the notch 20a in the back yoke 12 is reduced, and the amount of iron constituting the armature core can be increased, so that the operating characteristics of the rotating electrical machine can be improved, for example, the efficiency of the motor can be improved.
　実施の形態２．
　図１０および図１１はそれぞれこの発明の実施の形態２に係る回転電機における電機子鉄心の磁極ティース周りを示す要部拡大図であり、図１０は磁極ティースが第２位置に位置している状態を示し、図１１は１つの磁極ティースが第１位置に位置している状態を示している。 Embodiment 2. FIG.
FIGS. 10 and 11 are enlarged views of main portions showing the periphery of the magnetic teeth of the armature core in the rotary electric machine according to Embodiment 2 of the present invention. FIG. 10 is a state where the magnetic teeth are located at the second position. FIG. 11 shows a state where one magnetic pole tooth is located at the first position.
　図１０および図１１において、第２バックヨーク片２３は、電磁鋼板から円環状に打ち抜かれ、円弧形状の長穴部２３ａが、それぞれ、穴方向を周方向として、第２バックヨーク片２３の内周側に周方向に等角ピッチで形成されている。また、抜きカシメ部２３ｂが、それぞれ、長穴部２３ａ間に位置するように、第２バックヨーク片２３の外周側に等角ピッチで形成されている。さらに、凸部２３ｃが、長穴部２３ａの周方向に延びる外周側の縁部の周方向両端側を内周側に突出するように形成されている。 10 and 11, the second back yoke piece 23 is punched out in an annular shape from the electromagnetic steel sheet, and the arc-shaped long hole portions 23 a are respectively formed in the second back yoke piece 23 with the hole direction as the circumferential direction. It is formed at an equiangular pitch in the circumferential direction on the circumferential side. Further, the punched and crimped portions 23b are formed at an equiangular pitch on the outer peripheral side of the second back yoke piece 23 so as to be positioned between the long hole portions 23a. Furthermore, the convex part 23c is formed so that the circumferential direction both ends of the edge part of the outer peripheral side extended in the circumferential direction of the long hole part 23a may protrude in an inner peripheral side.
　この第２バックヨーク片２３は、凸部２３ｃが形成されている点を除いて、上記実施の形態１における第２バックヨーク片２１と同様に構成されている。
　なお、実施の形態２では、第２バックヨーク片２１に替えて第２バックヨーク片２３を用いている点を除いて、上記実施の形態１と同様に構成されている。 The second back yoke piece 23 is configured in the same manner as the second back yoke piece 21 in the first embodiment except that the convex portion 23c is formed.
The second embodiment is configured in the same manner as in the first embodiment except that the second back yoke piece 23 is used instead of the second back yoke piece 21.
　実施の形態２による電機子鉄心１１Ａでは、第１バックヨーク片２０と第１磁極ティース片２５の組と、第２バックヨーク片２３と第２磁極ティース片２６の組とを交互に積層して構成されている。そして、第１バックヨーク片２０と第２バックヨーク片２３とを重ねた際に、抜きカシメ部２０ｂ，２３ｂが重なり、第１および第２バックヨーク片２０，２３の積層体が一体化され、バックヨーク１２Ａが作製される。また、第１および第２磁極ティース片２５，２６の積層体が抜きカシメ部２５ｃ、２６ｃの嵌合により一体化され、磁極ティース１３が作製される。そして、第１磁極ティース片２５の突起部２５ｄが切り欠き部２０ａ内に挿入され、軸部２５ｅが長穴部２３ａ内に遊嵌状態に挿入される。 In the armature core 11A according to the second embodiment, the set of the first back yoke piece 20 and the first magnetic pole tooth piece 25 and the set of the second back yoke piece 23 and the second magnetic pole tooth piece 26 are alternately stacked. It is configured. And when the 1st back yoke piece 20 and the 2nd back yoke piece 23 are piled up, extraction caulking parts 20b and 23b overlap, and the layered product of the 1st and 2nd back yoke pieces 20 and 23 is unified, The back yoke 12A is produced. Further, the laminated body of the first and second magnetic pole tooth pieces 25 and 26 is integrated by fitting the caulking portions 25c and 26c, whereby the magnetic pole teeth 13 are produced. And the protrusion part 25d of the 1st magnetic pole teeth piece 25 is inserted in the notch part 20a, and the axial part 25e is inserted in the long hole part 23a in a loose-fit state.
　実施の形態２では、バックヨーク１２Ａが円環状の打ち抜かれた第１および第２バックヨーク片２０，２３を積層して作製され、磁極ティース１３がバックヨーク１２Ａの内周側に位置して第１位値と第２位置との間を周方向に往復移動可能にバックヨーク１２Ａに連結されている。したがって、実施の形態２においても、上記実施の形態１と同様の効果が得られる。 In the second embodiment, the back yoke 12A is manufactured by laminating the first and second back yoke pieces 20 and 23 that are annularly punched, and the magnetic pole teeth 13 are positioned on the inner peripheral side of the back yoke 12A. It is connected to the back yoke 12A so as to be capable of reciprocating in the circumferential direction between the first value and the second position. Therefore, also in the second embodiment, the same effect as in the first embodiment can be obtained.
　実施の形態２では、凸部２３ｃが長穴部２３ａの周方向に延びる外周側の縁部の周方向両端側を内周側に突出するように形成され、長穴部２３ａの穴幅（径方向幅）が凸部２３ｃの位置で狭くなっている。そこで、軸部２５ｅが、長穴部２３ａの穴方向に沿って周方向の一側にスライド移動し、凸部２３ｃを径方向外方に弾性変形させて凸部２３ｃを乗り越え、図１１に示されるように、長穴部２３ａの一端に接する第１位置に位置する。また、軸部２５ｅが、長穴部２３ａの穴方向に沿って周方向の他側にスライド移動し、凸部２３ｃを径方向外方に弾性変形させて凸部２３ｃを乗り越え、図１０に示されるように、長穴部２３ａの他端に接する第２位置に位置する。軸部２５ｅが凸部２３ｃを乗り越えるには、凸部２３ｃを弾性変形させる力が必要となるので、軸部２５ｅ、すなわち磁極ティース１３が第１位置および第２位置に位置決め保持される。なお、凸部２３ｃの突出量を調整することにより、凸部２３ｃを乗り越える力を設定できる。 In the second embodiment, the convex portion 23c is formed so as to project both ends in the circumferential direction of the outer peripheral edge extending in the circumferential direction of the elongated hole portion 23a toward the inner circumferential side, and the hole width (diameter) of the elongated hole portion 23a. (Direction width) is narrow at the position of the convex portion 23c. Therefore, the shaft portion 25e slides to one side in the circumferential direction along the hole direction of the long hole portion 23a, and elastically deforms the convex portion 23c outward in the radial direction to get over the convex portion 23c, as shown in FIG. As a result, it is located in the 1st position which touches one end of long hole part 23a. Further, the shaft portion 25e slides and moves to the other side in the circumferential direction along the hole direction of the long hole portion 23a, elastically deforms the convex portion 23c radially outward, and climbs over the convex portion 23c, as shown in FIG. As a result, it is located at the second position in contact with the other end of the slot 23a. In order for the shaft portion 25e to get over the convex portion 23c, a force that elastically deforms the convex portion 23c is required, so that the shaft portion 25e, that is, the magnetic pole teeth 13, is positioned and held at the first position and the second position. In addition, the force over the convex part 23c can be set by adjusting the protrusion amount of the convex part 23c.
　実施の形態２によれば、磁極ティース１３を容易に、かつ正確に第１位置および第２位置に位置決め保持できるので、電機子製造の作業工数を削減できるとともに、磁極ティース１３の位置のばらつきが抑制され、回転電機の動作特性を向上させることができる。 According to the second embodiment, the magnetic pole teeth 13 can be easily and accurately positioned and held at the first position and the second position, so that the man-hours for manufacturing the armature can be reduced and the position of the magnetic pole teeth 13 varies. The operating characteristics of the rotating electrical machine can be improved.
　なお、上記実施の形態２では、凸部２３ｃが、長穴部２３ａの周方向に延びる外周側の縁部の周方向両端側を内周側に突出するように形成されているが、凸部は、長穴部２３ａの周方向に延びる内周側の縁部の周方向両端側を外周側に突出するように形成されてもよい。 In the second embodiment, the convex portion 23c is formed so as to project both ends in the circumferential direction of the outer peripheral edge extending in the circumferential direction of the elongated hole portion 23a toward the inner peripheral side. May be formed so that both ends in the circumferential direction of the inner peripheral edge extending in the circumferential direction of the elongated hole portion 23a protrude toward the outer peripheral side.
　実施の形態３．
　図１２はこの発明の実施の形態３に係る回転電機における電機子鉄心の磁極ティース周りを示す要部拡大図である。 Embodiment 3 FIG.
FIG. 12 is an enlarged view of a main part showing the periphery of the magnetic teeth of the armature core in the rotary electric machine according to Embodiment 3 of the present invention.
　図１２において、第２バックヨーク片２４は、電磁鋼板から円環状に打ち抜かれ、円弧形状の長穴部２４ａが、それぞれ、穴方向を周方向として、第２バックヨーク片２４の内周側に周方向に等角ピッチで形成されている。また、抜きカシメ部２４ｂが、それぞれ、長穴部２４ａ間に位置するように、第２バックヨーク片２４の外周側に等角ピッチで形成されている。また、凸部２４ｃが、長穴部２４ａの周方向に延びる外周側の縁部の周方向両端側を内周側に突出するように形成されている。さらに、補助孔２４ｄが、凸部２４ｃを挟んで長穴部２４ａと相対して、凸部２４ｃの外周側に凸部２４ｃに近接して第２バックヨーク片２４に形成されている。 In FIG. 12, the second back yoke piece 24 is punched out in an annular shape from the magnetic steel sheet, and the arc-shaped long hole portions 24 a are respectively formed on the inner peripheral side of the second back yoke piece 24 with the hole direction as the circumferential direction. It is formed at an equiangular pitch in the circumferential direction. Further, the punched caulking portions 24b are formed at an equiangular pitch on the outer peripheral side of the second back yoke piece 24 so as to be positioned between the long hole portions 24a. Moreover, the convex part 24c is formed so that the circumferential direction both ends of the edge part of the outer peripheral side extended in the circumferential direction of the long hole part 24a may protrude in the inner peripheral side. Further, an auxiliary hole 24d is formed in the second back yoke piece 24 in the vicinity of the convex portion 24c on the outer peripheral side of the convex portion 24c, facing the elongated hole portion 24a with the convex portion 24c interposed therebetween.
　この第２バックヨーク片２４は、凸部２４ｃおよび補助孔２４ｄが形成されている点を除いて、上記実施の形態１における第２バックヨーク片２１と同様に構成されている。
　なお、実施の形態３では、第２バックヨーク片２１に替えて第２バックヨーク片２４を用いている点を除いて、上記実施の形態１と同様に構成されている。 The second back yoke piece 24 is configured in the same manner as the second back yoke piece 21 in the first embodiment except that the convex portion 24c and the auxiliary hole 24d are formed.
The third embodiment is configured in the same manner as in the first embodiment except that the second back yoke piece 24 is used instead of the second back yoke piece 21.
　実施の形態３による電機子鉄心１１Ｂでは、第１バックヨーク片２０と第１磁極ティース片２５の組と、第２バックヨーク片２４と第２磁極ティース片２６の組とを交互に積層して構成されている。そして、第１バックヨーク片２０と第２バックヨーク片２４とを重ねた際に、抜きカシメ部２０ｂ，２４ｂが重なり、第１および第２バックヨーク片２０，２４の積層体が一体化され、バックヨーク１２Ｂが作製される。また、第１および第２磁極ティース片２５，２６の積層体が抜きカシメ部２５ｃ、２６ｃの嵌合により一体化され、磁極ティース１３が作製される。第１磁極ティース片２５の突起部２５ｄが切り欠き部２０ａ内に挿入され、軸部２５ｅが長穴部２４ａ内に遊嵌状態に挿入される。 In the armature core 11B according to the third embodiment, the set of the first back yoke pieces 20 and the first magnetic pole tooth pieces 25 and the set of the second back yoke pieces 24 and the second magnetic pole tooth pieces 26 are alternately laminated. It is configured. Then, when the first back yoke piece 20 and the second back yoke piece 24 are overlapped, the caulking portions 20b and 24b are overlapped, and the laminated body of the first and second back yoke pieces 20 and 24 is integrated, The back yoke 12B is produced. Further, the laminated body of the first and second magnetic pole tooth pieces 25 and 26 is integrated by fitting the caulking portions 25c and 26c, whereby the magnetic pole teeth 13 are produced. The protruding portion 25d of the first magnetic pole tooth piece 25 is inserted into the cutout portion 20a, and the shaft portion 25e is inserted into the elongated hole portion 24a in a loosely fitted state.
　実施の形態３では、バックヨーク１２Ｂが円環状の打ち抜かれた第１および第２バックヨーク片２０，２４を積層して作製され、磁極ティース１３がバックヨーク１２Ｂの内周側に位置して第１位値と第２位置との間を周方向に往復移動可能にバックヨーク１２Ｂに連結されている。したがって、実施の形態３においても、上記実施の形態１と同様の効果が得られる。 In the third embodiment, the back yoke 12B is manufactured by stacking the first and second back yoke pieces 20 and 24 that are annularly punched, and the magnetic pole teeth 13 are positioned on the inner peripheral side of the back yoke 12B. It is connected to the back yoke 12B so as to reciprocate in the circumferential direction between the first value and the second position. Therefore, also in Embodiment 3, the same effect as in Embodiment 1 can be obtained.
　実施の形態３では、凸部２４ｃが長穴部２４ａの周方向に延びる外周側の縁部の周方向両端側を内周側に突出するように形成され、長穴部２４ａの穴幅（径方向幅）が凸部２４ｃの位置で狭くなっている。また、補助孔２４ｄが、凸部２４ｃの外周側に近接して形成され、凸部２４ｃが薄肉に形成され、弾性変形しやすくなっている。 In the third embodiment, the convex portion 24c is formed so as to project both ends in the circumferential direction of the outer peripheral edge extending in the circumferential direction of the long hole portion 24a to the inner peripheral side, and the hole width (diameter) of the long hole portion 24a. (Direction width) is narrow at the position of the convex portion 24c. Further, the auxiliary hole 24d is formed close to the outer peripheral side of the convex portion 24c, and the convex portion 24c is formed thin, and is easily elastically deformed.
　そこで、軸部２５ｅが、長穴部２４ａの穴方向に沿って周方向の一側にスライド移動し、凸部２４ｃを乗り越える際に、凸部２４ｃを押し上げる。これにより、補助孔２４ｄと長穴部２４ａとの間に形成された薄肉の凸部２４ｃが弾性変形し、軸部２５ｅが凸部２４ｃを乗り越える。軸部２５ｅが凸部２４ｃを乗り越えると、凸部２４ｃが復元する。そして、凸部２４ｃの復元力により、軸部２５ｅが周方向の一側に移動し、長穴部２４ａの周方向の一端に接する第１位置に位置する。同様に、軸部２５ｅが、長穴部２３ａの穴方向に沿って周方向の他側にスライド移動し、凸部２４ｃを弾性変形させて凸部２４ｃを乗り越え、長穴部２４ａの他端に接する第２位置に位置する。軸部２５ｅが凸部２４ｃを乗り越えるには、凸部２４ｃを弾性変形させる力が必要となるので、磁極ティース１３が第１位置および第２位置に位置決め保持される。なお、補助孔２４ｄと長穴部２４ａとの間の凸部２４ｃの厚さを調整することにより、凸部２４ｃを乗り越える力を設定できる。 Therefore, the shaft portion 25e slides to one side in the circumferential direction along the hole direction of the long hole portion 24a, and pushes up the convex portion 24c when getting over the convex portion 24c. Thereby, the thin convex part 24c formed between the auxiliary hole 24d and the long hole part 24a is elastically deformed, and the shaft part 25e gets over the convex part 24c. When the shaft portion 25e gets over the convex portion 24c, the convex portion 24c is restored. And the axial part 25e moves to the one side of the circumferential direction by the restoring force of the convex part 24c, and is located in the 1st position which touches the end of the circumferential direction of the long hole part 24a. Similarly, the shaft portion 25e slides to the other side in the circumferential direction along the hole direction of the long hole portion 23a, elastically deforms the convex portion 24c, gets over the convex portion 24c, and moves to the other end of the long hole portion 24a. It is located in the 2nd position which touches. In order for the shaft portion 25e to get over the convex portion 24c, a force for elastically deforming the convex portion 24c is required, so that the magnetic pole teeth 13 are positioned and held at the first position and the second position. In addition, the force over the convex part 24c can be set by adjusting the thickness of the convex part 24c between the auxiliary hole 24d and the long hole part 24a.
　実施の形態３によれば、磁極ティース１３を容易に、かつ正確に第１位置および第２位置に位置決め保持できるので、電機子の製造工程を削減できるとともに、磁極ティース１３の位置のばらつきが抑制され、回転電機の動作特性を向上させることができる。 According to the third embodiment, the magnetic pole teeth 13 can be easily and accurately positioned and held at the first position and the second position, so that the manufacturing process of the armature can be reduced, and variation in the position of the magnetic pole teeth 13 is suppressed. Thus, the operating characteristics of the rotating electrical machine can be improved.
　実施の形態４．
　図１３はこの発明の実施の形態４に係る回転電機における電機子鉄心の磁極ティース周りを示す要部拡大図である。 Embodiment 4 FIG.
FIG. 13 is an enlarged view of the main part showing the periphery of the magnetic teeth of the armature core in the rotary electric machine according to Embodiment 4 of the present invention.
　図１３において、磁極ティース１３Ａは、断面楕円形の軸部２５ｅ’が突起部２５ｄに形成されている第１磁極ティース片を用いている。
　なお、他の構成は上記実施の形態１と同様に構成されている。 In FIG. 13, the magnetic pole teeth 13 </ b> A uses a first magnetic pole tooth piece in which a shaft portion 25 e ′ having an elliptical cross section is formed on a protruding portion 25 d.
Other configurations are the same as those in the first embodiment.
　実施の形態４による電機子鉄心１１Ｃでは、軸部２５ｅ’が長穴部２１ａ内に遊嵌状態に挿入され、磁極ティース１３Ａがバックヨーク１２の内周側に位置して第１位値と第２位置との間を周方向に往復移動可能にバックヨーク１２に連結されている。したがって、実施の形態４においても、上記実施の形態１と同様の効果が得られる。 In the armature core 11C according to the fourth embodiment, the shaft portion 25e ′ is inserted into the elongated hole portion 21a so as to be loosely fitted, and the magnetic pole teeth 13A are located on the inner peripheral side of the back yoke 12 so It is connected to the back yoke 12 so as to be reciprocally movable in the circumferential direction between the two positions. Therefore, also in the fourth embodiment, the same effect as in the first embodiment can be obtained.
　ここで、第２磁極ティース片２６の第２基部２６ａの外周端面は、第２バックヨーク片２１の内周端面の曲率半径と同等の曲率半径に形成されるが、第２バックヨーク片２１と第２磁極ティース片２６との間には不可避な微小の隙間が形成される。
　そして、例えば、実施の形態１において、磁極ティース１３の移動力を小さくしてコイル１５ａの装着作業性を高める、あるいは長穴部２１ａや軸部２５ｅの加工精度を高めないで低コスト化を図るなどの理由から、長穴部２１ａと軸部２５ｅの嵌め合い隙間を大きくした場合、第２バックヨーク片２１と第２磁極ティース片２６との間に形成される隙間により、軸部２５ｅの軸心を中心とする磁極ティース１３の回動が誘発される。この磁極ティース１３の回動は、第２位値に位置する磁極ティース１３の位置（姿勢）のばらつきを誘発し、回転電機の動作特性を低下させることになる。 Here, the outer peripheral end surface of the second base portion 26 a of the second magnetic pole tooth piece 26 is formed to have a curvature radius equivalent to the curvature radius of the inner peripheral end surface of the second back yoke piece 21. An inevitable minute gap is formed between the second magnetic pole teeth piece 26.
For example, in the first embodiment, the moving force of the magnetic pole teeth 13 is reduced to improve the mounting workability of the coil 15a, or the cost is reduced without increasing the processing accuracy of the long hole portion 21a and the shaft portion 25e. For the reason described above, when the fitting gap between the long hole portion 21a and the shaft portion 25e is increased, the shaft of the shaft portion 25e is formed by the gap formed between the second back yoke piece 21 and the second magnetic pole tooth piece 26. The magnetic teeth 13 are pivoted about the heart. The rotation of the magnetic teeth 13 induces variations in the position (posture) of the magnetic teeth 13 positioned at the second position value, and deteriorates the operating characteristics of the rotating electrical machine.
　実施の形態４では、軸部２５ｅ’が断面楕円形に作製されているので、図１３中矢印Ａで示される、軸部２５ｅ’の軸心を中心とする磁極ティース１３Ａの回動を抑制できる。そこで、第２位値に位置する磁極ティース１３Ａの位置（姿勢）のばらつきが抑制され、回転電機の動作特性を向上させることができる。さらに、長穴部２１ａと軸部２５ｅの嵌め合い隙間を大きくできるので、磁極ティース１３の移動力が小さくなり、コイル１５ａの装着作業性が高められる。また、長穴部２１ａや軸部２５ｅ’の加工精度を過度に高める必要がなく、低コスト化が図られる。 In the fourth embodiment, since the shaft portion 25e ′ has an elliptical cross section, it is possible to suppress the rotation of the magnetic teeth 13A centered on the axis of the shaft portion 25e ′ shown by the arrow A in FIG. . Therefore, variation in the position (posture) of the magnetic teeth 13A positioned at the second position value is suppressed, and the operating characteristics of the rotating electrical machine can be improved. Furthermore, since the fitting clearance between the long hole portion 21a and the shaft portion 25e can be increased, the moving force of the magnetic pole teeth 13 is reduced, and the mounting workability of the coil 15a is improved. Further, it is not necessary to excessively increase the processing accuracy of the long hole portion 21a and the shaft portion 25e ', and the cost can be reduced.
　なお、上記実施の形態４では、実施の形態１における断面円形の軸部を断面楕円形の軸部に替えているが、実施の形態２，３における断面円形の軸部を断面楕円形の軸部に替えても、同様の効果が得られる。 In the fourth embodiment, the shaft portion having the circular cross section in the first embodiment is replaced with the shaft portion having the elliptical cross section. However, the shaft portion having the circular cross section in the second and third embodiments is replaced with the shaft having the elliptical cross section. The same effect can be obtained even if the part is changed.
　実施の形態５．
　図１４はこの発明の実施の形態５に係る回転電機を示す平面図、図１５はこの発明の実施の形態５に係る回転電機における電機子鉄心を構成する第１バックヨーク片および第１磁極ティース片の配列状態を示す平面図、図１６はこの発明の実施の形態５に係る回転電機における電機子鉄心を構成する第２バックヨーク片および第２磁極ティース片の配列状態を示す平面図、図１７はこの発明の実施の形態５に係る回転電機における電機子鉄心に電機子コイルを装着する方法を説明する図である。 Embodiment 5 FIG.
FIG. 14 is a plan view showing a rotary electric machine according to Embodiment 5 of the present invention, and FIG. 15 shows a first back yoke piece and first magnetic pole teeth constituting an armature core in the rotary electric machine according to Embodiment 5 of the present invention. FIG. 16 is a plan view showing the arrangement state of the second back yoke piece and the second magnetic pole tooth piece constituting the armature core in the rotary electric machine according to Embodiment 5 of the present invention. 17 is a view for explaining a method of mounting an armature coil on an armature core in a rotary electric machine according to Embodiment 5 of the present invention.
　図１４において、回転電機１０１は、ハウジング（図示せず）内に配設された回転子１と、回転子１との間に一定の空隙を介して回転子１を囲繞するようにハウジングに同軸に保持された電機子４０と、を備えている。 In FIG. 14, the rotating electrical machine 101 is coaxial with the housing so as to surround the rotor 1 through a certain gap between the rotor 1 disposed in a housing (not shown) and the rotor 1. And an armature 40 held by the armature.
　電機子４０は、磁極ティース４３が、それぞれ、円環状のバックヨーク４２の内周壁面から径方向内方に突出して、周方向に等角ピッチで複数本、ここでは２４本配設された電機子鉄心４１と、それぞれ、導体線を周方向に連続する２本の磁極ティース４３の両側に位置するスロット４４に複数回巻き回して作製されたコイル１５ａから構成される電機子コイル１５と、電機子鉄心４１と電機子コイル１５との間に介在する絶縁体（図示せず）と、を備える。 The armature 40 is an electric machine in which magnetic pole teeth 43 project radially inward from the inner peripheral wall surface of the annular back yoke 42 and are arranged in a plurality of equiangular pitches in the circumferential direction, 24 in this case. An armature coil 15 composed of a core core 41, a coil 15a formed by winding a conductor wire around a slot 44 positioned on both sides of two magnetic pole teeth 43 continuous in the circumferential direction, An insulator (not shown) interposed between the core iron core 41 and the armature coil 15.
　バックヨーク４２は、図１５および図１６に示されるように、電磁鋼板から打ち抜かれた円環状の第１および第２バックヨーク片５０，５１を備える。そして、長穴部５０ａが、それぞれ、穴方向を周方向として、第１バックヨーク片５０の内周側に周方向に等角ピッチで２４個形成されている。連通部５０ｂが長穴部５０ａのそれぞれを第１バックヨーク片５０の内周側と連通するように第１バックヨーク片５０に形成されている。さらに、抜きカシメ部５０ｃが、それぞれ、長穴部５０ａ間に位置するように、第１バックヨーク片５０の外周側に等角ピッチで形成されている。抜きカシメ部５１ａが、それぞれ、第２バックヨーク片５１の外周側に等角ピッチで形成されている。そして、第１バックヨーク片５０と第２バックヨーク片５１とを重ねた際に、抜きカシメ部５０ｃ，５１ａが重なる。ここで、長穴部５０ａの穴形状は、周方向に延びる内周側および外周側の両縁部が、それぞれ、第１バックヨーク片５０の軸心を中心とする円筒面の一部で構成され、周方向の両端面が、それぞれ、両縁部間の間隔（穴幅）を直径とする円筒面の一部で構成された、円弧形状となっている。 15 and 16, the back yoke 42 includes annular first and second back yoke pieces 50 and 51 punched from an electromagnetic steel plate. Then, 24 long hole portions 50a are formed at equiangular pitches in the circumferential direction on the inner circumferential side of the first back yoke piece 50, with the hole direction as the circumferential direction. A communication portion 50 b is formed in the first back yoke piece 50 so that each of the elongated hole portions 50 a communicates with the inner peripheral side of the first back yoke piece 50. Further, the punched caulking portions 50c are formed at an equiangular pitch on the outer peripheral side of the first back yoke piece 50 so as to be positioned between the long hole portions 50a. The punched caulking portions 51a are formed at an equiangular pitch on the outer peripheral side of the second back yoke piece 51, respectively. And when the 1st back yoke piece 50 and the 2nd back yoke piece 51 are piled up, the extraction caulking parts 50c and 51a overlap. Here, the hole shape of the long hole portion 50 a is configured such that both the inner peripheral side and the outer peripheral side edge portions extending in the circumferential direction are part of a cylindrical surface centering on the axis of the first back yoke piece 50. In addition, both end faces in the circumferential direction each have an arc shape formed by a part of a cylindrical surface having a distance (hole width) between both edges as a diameter.
　磁極ティース４３は、図１５および図１６に示されるように、電磁鋼板から打ち抜かれた第１および第２磁極ティース片５５，５６を備える。第１磁極ティース片５５は、基部５５ａと、基部５５ａの先端から周方向両側に突出する鍔部５５ｂと、基部５５ａの中央位置に形成された抜きカシメ部５５ｃと、基部５５ａの根元部の周方向中央から径方向外方に突出する突起部５５ｄと、突起部５５ｄの突出端から周方向両側に突出する嵌合部５５ｅと、を備える。第２磁極ティース片５６は、基部５６ａと、基部５６ａの先端から周方向両側に突出する鍔部５６ｂと、基部５６ａの中央位置に形成された抜きカシメ部５６ｃと、を備える。第１磁極ティース片５５は、突起部５５ｄおよび嵌合部５５ｅを除いて、第２磁極ティース片５６と同一の外形形状に形成されている。そして、第１磁極ティース片５５と第２磁極ティース片５６とを重ねた際に、抜きカシメ部５５ｃ，５６ｃが重なる。 As shown in FIGS. 15 and 16, the magnetic pole teeth 43 are provided with first and second magnetic pole teeth pieces 55 and 56 punched from an electromagnetic steel plate. The first magnetic pole tooth piece 55 includes a base portion 55a, a flange portion 55b protruding from the tip of the base portion 55a to both sides in the circumferential direction, a punched caulking portion 55c formed at the center position of the base portion 55a, and a periphery of the base portion of the base portion 55a. The projection part 55d which protrudes to radial direction outward from the direction center, and the fitting part 55e which protrudes in the circumferential direction both sides from the protrusion end of the projection part 55d are provided. The second magnetic pole tooth piece 56 includes a base portion 56a, a flange portion 56b protruding from the tip of the base portion 56a to both sides in the circumferential direction, and a punched caulking portion 56c formed at the center position of the base portion 56a. The first magnetic pole tooth piece 55 is formed in the same outer shape as the second magnetic pole tooth piece 56 except for the protruding portion 55d and the fitting portion 55e. And when the 1st magnetic pole tooth piece 55 and the 2nd magnetic pole tooth piece 56 are piled up, the extraction caulking parts 55c and 56c overlap.
　ここで、嵌合部５５ｅは、周方向に延びる内周側および外周側の両縁部が、長穴部５０ａの内周側および外周側の両縁部の曲率半径と略等しい曲率半径の円筒面の一部で構成された、周方向長さが長穴部５０ａより短い円弧形状に形成されている。 Here, the fitting portion 55e is a cylinder whose inner peripheral side and outer peripheral side extending in the circumferential direction have a curvature radius substantially equal to the curvature radius of the inner peripheral side and the outer peripheral side of the long hole portion 50a. It is formed in the circular arc shape comprised in a part of surface, and the circumferential direction length is shorter than the long hole part 50a.
　電機子鉄心４１を作製するには、まず、第１バックヨーク片５０を配置し、ついで、図１５に示されるように、それぞれ、嵌合部５５ｅを長穴部５０ａ内に挿入して、基部５５ａを径方向内方に突出させて、第１磁極ティース片５５を第１バックヨーク片５０の内周側に、かつ第１バックヨーク片５０と面一として、周方向に等角ピッチで配置する。ついで、第２バックヨーク片５１を第１バックヨーク片５０上に配置する。さらに、第２磁極ティース片５６を第１磁極ティース片５５のそれぞれの上に重ねて、第２バックヨーク片５１と面一に配置する。この操作を必要回数繰り返し行い、第１および第２バックヨーク片５０，５１の積層体が抜きカシメ部５０ｃ，５１ａの嵌合により固定、一体化され、円環状のバックヨーク４２が形成される。また、第１および第２磁極ティース片５５，５６の積層体が抜きカシメ部５５ｃ，５６ｃの嵌合により固定、一体化され、磁極ティース４３が形成される。 In order to manufacture the armature core 41, first, the first back yoke piece 50 is disposed, and then, as shown in FIG. 15, the fitting portions 55e are inserted into the long hole portions 50a, respectively, 55a is protruded inward in the radial direction, and the first magnetic pole tooth pieces 55 are arranged on the inner peripheral side of the first back yoke piece 50 and flush with the first back yoke piece 50 at an equiangular pitch in the circumferential direction. To do. Next, the second back yoke piece 51 is disposed on the first back yoke piece 50. Further, the second magnetic pole tooth piece 56 is placed on each of the first magnetic pole tooth pieces 55 so as to be flush with the second back yoke piece 51. This operation is repeated as many times as necessary, and the laminated body of the first and second back yoke pieces 50 and 51 is fixed and integrated by fitting the crimping portions 50c and 51a, thereby forming the annular back yoke 42. In addition, the laminated body of the first and second magnetic pole teeth 55 and 56 is fixed and integrated by fitting the crimping portions 55c and 56c, so that the magnetic pole teeth 43 are formed.
　このように作製された電機子鉄心４１は、嵌合部５５ｅが長穴部５０ａ内を長穴部５０ａの穴方向、すなわち周方向にスライド移動可能となっている。そこで、磁極ティース４３は、嵌合部５５ｅが長穴部５０ａの周方向一端に接する第１位置と、嵌合部５５ｅが長穴部５０ａの周方向他端に接する第２位置との間を往復移動可能に、バックヨーク４２に取り付けられている。そして、磁極ティース４３のそれぞれの嵌合部５５ｅが長穴部５０ａの周方向他端に接すると、隣り合う磁極ティース４３間の隙間、すなわちスロット開口幅が縮小された状態となる。また、一の磁極ティース４３の嵌合部５５ｅが長穴部５０ａの周方向一端に接すると、隣り合う磁極ティース４３間の隙間、すなわちスロット開口幅が拡大された状態となる。 In the armature core 41 manufactured in this way, the fitting portion 55e can be slid in the elongated hole portion 50a in the hole direction of the elongated hole portion 50a, that is, in the circumferential direction. Therefore, the magnetic teeth 43 are between the first position where the fitting portion 55e contacts one end in the circumferential direction of the elongated hole portion 50a and the second position where the fitting portion 55e contacts the other circumferential end of the elongated hole portion 50a. It is attached to the back yoke 42 so as to be able to reciprocate. And when each fitting part 55e of the magnetic pole teeth 43 contacts the other circumferential end of the elongated hole part 50a, the gap between adjacent magnetic pole teeth 43, that is, the slot opening width is reduced. Further, when the fitting portion 55e of one magnetic pole tooth 43 comes into contact with one end in the circumferential direction of the elongated hole portion 50a, the gap between adjacent magnetic pole teeth 43, that is, the slot opening width is expanded.
　ついで、コイル１５ａの挿入作業について図１７を参照しつつ説明する。なお、図１７中、説明の便宜上、周方向に連続する２本の磁極ティース４３の一側に位置するスロット４４をスロット４４1とし、他側に位置するスロット４４をスロット４４2とし、スロット４４1の周方向一側の磁極ティース４３を磁極ティース４３1とし、スロット４４1の周方向他側の磁極ティース１３を磁極ティース４３2、スロット４４2の周方向一側の磁極ティース４３を磁極ティース４３3とし、スロット４４2の周方向他側の磁極ティース４３を磁極ティース４３4とする。 Next, the insertion operation of the coil 15a will be described with reference to FIG. In FIG. 17, for convenience of explanation, a slot 44 located on one side of the two pole tooth 43 which circumferentially continuous and slots 44 1, and a slot 44 located on the other side of the slot 44 2, the slot 44 1 is a magnetic teeth 43 1 , the magnetic teeth 13 on the other circumferential side of the slot 44 1 are the magnetic teeth 43 2 , and the magnetic teeth 43 on the circumferential one side of the slots 44 2 are the magnetic teeth. and 43 3, the magnetic teeth 43 of the circumferential other side slot 44 2 and the magnetic pole teeth 43 4.
　まず、嵌合部５５ｅが長穴部５０ａの周方向他端に接するように磁極ティース４３をスライド移動させ、磁極ティース４３のそれぞれを第２位置に位置させる。これにより、隣り合う磁極ティース４３間のスロット開口部幅が縮小された状態となる。コイル１５ａは、それぞれ、導体線を環状に複数回巻いて作製される。 First, the magnetic teeth 43 are slid so that the fitting portion 55e contacts the other circumferential end of the long hole portion 50a, and each of the magnetic teeth 43 is positioned at the second position. As a result, the slot opening width between adjacent magnetic pole teeth 43 is reduced. Each of the coils 15a is produced by winding a conductor wire a plurality of times in a ring shape.
　ついで、周方向に連続する２本の磁極ティース４３の両側に位置するスロット４４1，４４2のそれぞれにおいて、軸部５５ｅが長穴部５０ａの周方向一端に接するように、スロット４４1，４４2の周方向一側に位置する磁極ティース４３1，４３3を第１位置にスライド移動させ、スロット開口幅を拡大する。そして、コイル１５ａの導体線束を拡大されたスロット開口からスロット４４1，４４2に挿入する。ついで、スロット４４1，４４2の周方向一側に位置する磁極ティース４３1，４３3をスライド移動させて第２位置に戻し、１つのコイル１５ａが電機子鉄心４１に装着される。この操作を繰り返し行い、コイル１５ａは、図１７中、反時計回りに、１スロットピッチずつすらしながら、１つずつ電機子鉄心４１に装着される。 Then, in the respective slots 44 1, 44 2 located on either side of the two pole tooth 43 which circumferentially continuous, as shaft portion 55e is in contact with one circumferential end of the long hole 50a, the slot 44 1, 44 the pole tooth 43 1, 43 3 located in the second circumferential direction one side is slid to the first position, to enlarge the slot opening width. Then, the conductor wire bundle of the coil 15a is inserted into the slots 44 1 and 44 2 from the enlarged slot opening. Then, the slot 44 1, 44 pole teeth 43 1 located in the one circumferential side of the 2, 43 3 is returned to the second position is slid, one coil 15a is attached to the armature core 41. This operation is repeated, and the coils 15a are attached to the armature core 41 one by one while being even one slot pitch counterclockwise in FIG.
　ここで、３本目以降のコイル１５ａを電機子鉄心４１に装着するときには、周方向に連続する２本の磁極ティース４３2，４３3の一側に位置するスロット４４1には他のコイル１５ａの導体線束が挿入されていないが、周方向に連続する２本の磁極ティース４３2，４３3の他側に位置するスロット４４2には他のコイル１５ａの導体線束が挿入されている。他のコイル１５ａの導体線束が挿入されていないスロット４４1には、コイル１５ａの導体線束の挿入が容易である。しかし、他のコイル１５ａの導体線束が挿入されているスロット４４2には、コイル１５ａの導体線束の挿入が困難となる。 Here, when the third and subsequent coils 15a are attached to the armature core 41, the slots 44 1 positioned on one side of the two magnetic pole teeth 43 2 and 43 3 that are continuous in the circumferential direction have other coils 15a. Although conductor wire bundles is not inserted, the conductor wire bundles of the other coil 15a is inserted into slot 44 2 located on the other side in the circumferential direction in successive two pole tooth 43 2, 43 3. The slot 44 1 to conductor wire bundles of the other coil 15a is not inserted, it is easy to insert the conductor wire bundles of the coil 15a. However, the slot 44 2 to conductor wire bundles of the other coil 15a is inserted, the insertion of the conductor wire bundles of the coil 15a becomes difficult.
　この実施の形態５では、スロット４４1，４４2の周方向一側に位置する磁極ティース４３1，４３3を第１位置にスライド移動させ、スロット開口幅を拡大した後、コイル１５ａの導体線束をスロット４４1，４４2に挿入するので、他のコイル１５ａの導体線束が挿入されているスロット４４2にも、コイル１５ａの導体線束を容易に挿入できる。また、コイル１５ａの導体線束をスロット４４2に挿入した後、磁極ティース４３3を第２位置に戻すので、磁極ティース４３4が第２位置側に押圧され、磁極ティース４３4の軸部５５ｅが長穴部５０ａの周方向他端に当接し、磁極ティース４３4が第２位置に位置決め固定される。 In the fifth embodiment, by sliding the pole teeth 43 1, 43 3 located in the slot 44 1, 44 2 in the one circumferential side to the first position, after the enlarged slot opening width, the conductor wire bundles of the coil 15a Are inserted into the slots 44 1 and 44 2 , the conductor wire bundle of the coil 15a can be easily inserted into the slot 44 2 into which the conductor wire bundle of the other coil 15a is inserted. Also, after inserting the conductor wire bundles of the coils 15a in slot 44 2, so returning the pole tooth 43 3 to the second position, the magnetic pole teeth 43 4 is pressed against the second position, the shaft portion 55e of the magnetic pole teeth 43 4 contact with the circumferential direction end of the long hole 50a, the magnetic pole teeth 43 4 is positioned and fixed to the second position.
　このように、実施の形態５によれば、バックヨーク４２が円環状の打ち抜かれた第１および第２バックヨーク片５０，５１を積層して作製され、磁極ティース４３がバックヨーク４２の内周側に位置して第１位置と第２位置との間を周方向に往復移動可能にバックヨーク４２に連結されている。そこで、導体線束が挿入されているスロット４４の一側に位置する磁極ティース４３を第１位置に移動させて、スロット開口幅を拡大し、コイル１５ａの導体電束を拡大されたスロット開口からスロット４４に挿入できるので、コイル１５ａの電機子鉄心４１への装着が容易となり、コイル１５ａの装着作業性が向上される。これにより、コイル１５ａをスロット４４内に整列して挿入しやすくなり、占積率が向上され、回転電機１０１の動作特性を向上させることができる。 As described above, according to the fifth embodiment, the back yoke 42 is manufactured by stacking the first and second back yoke pieces 50 and 51 that are annularly punched, and the magnetic pole teeth 43 are formed on the inner periphery of the back yoke 42. It is connected to the back yoke 42 so as to reciprocate in the circumferential direction between the first position and the second position. Therefore, the magnetic pole teeth 43 located on one side of the slot 44 in which the conductor wire bundle is inserted is moved to the first position, the slot opening width is enlarged, and the conductor electric flux of the coil 15a is expanded from the enlarged slot opening to the slot. 44, the coil 15a can be easily mounted on the armature core 41, and the mounting workability of the coil 15a is improved. As a result, the coil 15a can be easily aligned and inserted into the slot 44, the space factor can be improved, and the operating characteristics of the rotating electrical machine 101 can be improved.
　バックヨーク４２を変形・移動させることなく、磁極ティース４３を周方向移動させるのみでスロット開口幅を拡大でき、コイル１５ａのスロット４４への挿入作業性を向上させることができる。そこで、大径あるいは積層数の多い電機子鉄心４１に対しても、少ないエネルギーを要するのみで、同様の効果が得られる。
　バックヨーク４２が円環状の第１および第２バックヨーク片５０，５１を積層、一体化して作製されているので、真円度が高められ、回転電機１０１の動作特性を向上させることができる。また、コイル１５ａの電機子鉄心４１への装着が完了した後、電機子鉄心４１を円環状に戻す必要がないので、電機子鉄心４１の真円度を高精度に確保することができる。 Without changing or moving the back yoke 42, the slot opening width can be increased only by moving the magnetic teeth 43 in the circumferential direction, and the workability of inserting the coil 15a into the slot 44 can be improved. Therefore, the same effect can be obtained for the armature core 41 having a large diameter or a large number of layers only by requiring less energy.
Since the back yoke 42 is formed by laminating and integrating the annular first and second back yoke pieces 50 and 51, the roundness can be increased and the operating characteristics of the rotating electrical machine 101 can be improved. Further, since it is not necessary to return the armature core 41 to an annular shape after the mounting of the coil 15a to the armature core 41 is completed, the roundness of the armature core 41 can be ensured with high accuracy.
　さらに、実施の形態５では、複数の分割積層鉄心を無端状に連結して構成されている従来の電機子鉄心構造で必要であった剛性を高める工程が不要となるので、作業工数の削減が図られるとともに、低コスト化が図られる。 Furthermore, in the fifth embodiment, since the process of increasing the rigidity required in the conventional armature core structure configured by connecting a plurality of divided laminated cores in an endless manner is unnecessary, the number of work steps can be reduced. In addition, the cost can be reduced.
　なお、上記実施の形態５では、電機子鉄心４１は、第１バックヨーク片５０と第１磁極ティース片５５の組と、第２バックヨーク片５１と第２磁極ティース片５６の組とを交互に積層して構成されているが、電機子鉄心は、この構成に限定されず、例えば、第１バックヨーク片５０と第１磁極ティース片５５の組の積層体を少なくとも１つ有し、残る積層部分を、第２バックヨーク片５１と第２磁極ティース片５６の組の積層体で構成してもよい。 In the fifth embodiment, the armature core 41 includes a set of the first back yoke piece 50 and the first magnetic pole tooth piece 55 and a set of the second back yoke piece 51 and the second magnetic pole tooth piece 56 alternately. However, the armature core is not limited to this configuration. For example, the armature core has at least one laminated body of a set of the first back yoke piece 50 and the first magnetic pole tooth piece 55 and remains. The laminated portion may be formed of a laminated body of a set of the second back yoke piece 51 and the second magnetic pole tooth piece 56.
　実施の形態６．
　図１８はこの発明の実施の形態６に係る回転電機における電機子鉄心の磁極ティースの移動動作を説明する図であり、図１８の（ａ）は磁極ティースが第２位置に位置している状態を示し、図１８の（ｂ）は一の磁極ティースが第１位置に位置している状態を示している。なお、図１８では、便宜上、電機子鉄心の一端に位置する第２バックヨーク片および第２磁極ティース片を省略している。 Embodiment 6 FIG.
FIG. 18 is a view for explaining the movement operation of the magnetic teeth of the armature core in the rotary electric machine according to Embodiment 6 of the present invention. FIG. 18 (a) shows the state where the magnetic teeth are located at the second position. FIG. 18B shows a state in which one magnetic pole tooth is located at the first position. In FIG. 18, the second back yoke piece and the second magnetic pole tooth piece located at one end of the armature core are omitted for convenience.
　図１８において、第１バックヨーク片５２は、電磁鋼板から円環状に打ち抜かれ、円弧形状の長穴部５２ａが、それぞれ、穴方向を周方向として、第１バックヨーク片５２の内周側に周方向に等角ピッチで２４個形成されている。連通部５２ｂが長穴部５２ａのそれぞれを第１バックヨーク片５２の内周側と連通するように第１バックヨーク片５２に形成されている。また、抜きカシメ部５２ｃが、それぞれ、長穴部５２ａ間に位置するように、第２バックヨーク片５２の外周側に等角ピッチで形成されている。さらに、凸部５２ｄが、長穴部５２ａの周方向に延びる外周側の縁部の周方向両端側を内周側に突出するように形成されている。 In FIG. 18, the first back yoke piece 52 is punched in an annular shape from a magnetic steel sheet, and the arc-shaped long hole portions 52 a are respectively formed on the inner peripheral side of the first back yoke piece 52 with the hole direction as the circumferential direction. Twenty-four are formed at equiangular pitches in the circumferential direction. A communication portion 52 b is formed in the first back yoke piece 52 so that each of the elongated hole portions 52 a communicates with the inner peripheral side of the first back yoke piece 52. Further, the punched caulking portions 52c are formed at an equiangular pitch on the outer peripheral side of the second back yoke piece 52 so as to be positioned between the long hole portions 52a. Furthermore, the convex part 52d is formed so that the both ends of the circumferential direction of the edge part of the outer peripheral side extended in the circumferential direction of the long hole part 52a may protrude in the inner peripheral side.
　第１磁極ティース片５７は、基部５７ａと、基部５７ａの先端から周方向両側に突出する鍔部５７ｂと、基部５７ａの中央位置に形成された抜きカシメ部５７ｃと、基部５７ａの根元部の周方向中央から径方向外方に突出する突起部５７ｄと、突起部５７ｄの突出端から周方向両側に突出する円弧形状の嵌合部５７ｅと、嵌合部５７ｅの外周側の縁部に形成された凹部５７ｆと、を備える。凹部５７ｆは、嵌合部５７ｅが長穴部５２ａの周方向一端に接するときに凸部５２ｄを収容して圧入を解放し、かつ嵌合部５７ｅが長穴部５２ａの周方向他端に接するときに凸部５２ｄを収容して圧入を解放するように嵌合部５７ｅの外周側の縁部に形成されている。 The first magnetic pole tooth piece 57 includes a base portion 57a, a flange portion 57b protruding from the tip of the base portion 57a to both sides in the circumferential direction, a punched caulking portion 57c formed at the center position of the base portion 57a, and a periphery of the base portion of the base portion 57a. A protrusion 57d that protrudes radially outward from the center in the direction, an arc-shaped fitting portion 57e that protrudes from the protruding end of the protrusion 57d to both sides in the circumferential direction, and an outer peripheral edge of the fitting portion 57e. A recess 57f. The concave portion 57f accommodates the convex portion 52d and releases the press-fitting when the fitting portion 57e contacts one end in the circumferential direction of the elongated hole portion 52a, and the fitting portion 57e contacts the other circumferential end of the elongated hole portion 52a. It is sometimes formed on the outer peripheral edge of the fitting portion 57e so as to accommodate the convex portion 52d and release the press-fitting.
　第１バックヨーク片５２は、凸部５２ｄが形成されている点を除いて、上記実施の形態５における第１バックヨーク片５０と同様に構成されている。また、第１磁極ティース片５７は、凹部５７ｆが形成されている点を除いて、上記実施の形態５における第１磁極ティース片５５と同様に構成されている。
　なお、実施の形態６では、第１バックヨーク片５０および第１磁極ティース片５５に替えて第１バックヨーク片５２および第１磁極ティース片５７を用いている点を除いて、上記実施の形態５と同様に構成されている。 The first back yoke piece 52 is configured in the same manner as the first back yoke piece 50 in the fifth embodiment except that the convex portion 52d is formed. Further, the first magnetic pole tooth piece 57 is configured in the same manner as the first magnetic pole tooth piece 55 in the fifth embodiment except that the concave portion 57f is formed.
In the sixth embodiment, except that the first back yoke piece 52 and the first magnetic pole tooth piece 57 are used in place of the first back yoke piece 50 and the first magnetic pole tooth piece 55, the above embodiment is described. This is the same as in FIG.
　実施の形態６による電機子鉄心４１Ａでは、第１バックヨーク片５２と第１磁極ティース片５７の組と、第２バックヨーク片５１と第２磁極ティース片５６の組とを交互に積層して構成されている。そして、第１バックヨーク片５２と第２バックヨーク片５１とを重ねた際に、抜きカシメ部５２ｃ，５１ａが重なり、第１および第２バックヨーク片５２，５１の積層体が一体化され、バックヨーク４２Ａが作製される。また、第１および第２磁極ティース片５７，５６の積層体が抜きカシメ部５７ｃ、５６ｃの嵌合により一体化され、磁極ティース４３Ａが作製される。そして、第１磁極ティース片５７の突起部５７ｄが連通部５２ｂ内に挿入され、嵌合部５７ｅが長穴部５２ａ内に遊嵌状態に挿入される。 In the armature core 41A according to the sixth embodiment, the set of the first back yoke piece 52 and the first magnetic pole tooth piece 57 and the set of the second back yoke piece 51 and the second magnetic pole tooth piece 56 are alternately stacked. It is configured. And when the 1st back yoke piece 52 and the 2nd back yoke piece 51 are piled up, extraction caulking parts 52c and 51a overlap, and the layered product of the 1st and 2nd back yoke pieces 52 and 51 is unified, The back yoke 42A is produced. Further, the laminated body of the first and second magnetic pole teeth pieces 57 and 56 is integrated by fitting the caulking portions 57c and 56c to produce the magnetic pole teeth 43A. And the protrusion part 57d of the 1st magnetic pole teeth piece 57 is inserted in the communication part 52b, and the fitting part 57e is inserted in the long hole part 52a in a loose-fit state.
　実施の形態６では、バックヨーク４２Ａが円環状の打ち抜かれた第１および第２バックヨーク片５２，５１を積層して作製され、磁極ティース４３Ａがバックヨーク４２Ａの内周側に位置して第１位値と第２位置との間を周方向に往復移動可能にバックヨーク４２Ａに連結されている。したがって、実施の形態６においても、上記実施の形態５と同様の効果が得られる。 In the sixth embodiment, the back yoke 42A is manufactured by stacking the first and second back yoke pieces 52, 51 that are annularly punched, and the magnetic pole teeth 43A are positioned on the inner peripheral side of the back yoke 42A. It is connected to the back yoke 42A so as to be reciprocally movable in the circumferential direction between the first value and the second position. Therefore, in the sixth embodiment, the same effect as in the fifth embodiment can be obtained.
　実施の形態６では、凸部５２ｄが長穴部５２ａの周方向に延びる外周側の縁部の周方向両端側を内周側に突出するように形成され、長穴部５２ａの穴幅（径方向幅）が凸部５２ｄの位置で狭くなっている。そこで、嵌合部５７ｅが、長穴部５２ａの穴方向に沿って周方向の一側にスライド移動し、凸部５２ｄを径方向外方に弾性変形させて凸部５２ｄを乗り越え、図１８の（ｂ）に示されるように、長穴部５２ａの一端に接する第１位置に位置する。このとき、凸部５２ｄが凹部５７ｆ内に収納され、圧入が解放される。
　また、嵌合部５７ｅが、長穴部５２ａの穴方向に沿って周方向の他側にスライド移動し、凸部５２ｃを径方向外方に弾性変形させて凸部５２ｃを乗り越え、図１８の（ａ）に示されるように、長穴部５２ａの他端に接する第２位置に位置する。このとき、凸部５２ｃが凹部５７ｆ内に収納され、圧入が解放される。 In the sixth embodiment, the convex portion 52d is formed so as to project both ends in the circumferential direction of the outer peripheral edge extending in the circumferential direction of the long hole portion 52a to the inner peripheral side, and the hole width (diameter) of the long hole portion 52a. (Direction width) is narrow at the position of the convex portion 52d. Accordingly, the fitting portion 57e slides and moves to one side in the circumferential direction along the hole direction of the elongated hole portion 52a, elastically deforms the convex portion 52d outward in the radial direction, and climbs over the convex portion 52d. As shown in (b), it is located at the first position in contact with one end of the slot 52a. At this time, the convex portion 52d is housed in the concave portion 57f, and the press-fitting is released.
Further, the fitting portion 57e slides to the other side in the circumferential direction along the hole direction of the elongated hole portion 52a, elastically deforms the convex portion 52c outward in the radial direction, and climbs over the convex portion 52c. As shown to (a), it is located in the 2nd position which touches the other end of the long hole part 52a. At this time, the convex part 52c is accommodated in the concave part 57f, and the press-fitting is released.
　ここで、嵌合部５７ｅが凸部５２ｄを乗り越えるには、凸部５２ｄを弾性変形させる力が必要となるので、嵌合部５２ｅ、すなわち磁極ティース４３Ａが第１位置および第２位置に位置決め保持される。なお、凸部５２ｄの突出量を調整することにより、凸部５２ｄを乗り越える力を設定できる。 Here, in order for the fitting part 57e to get over the convex part 52d, a force for elastically deforming the convex part 52d is required, so the fitting part 52e, that is, the magnetic teeth 43A is positioned and held at the first position and the second position. Is done. In addition, the force over the convex part 52d can be set by adjusting the protrusion amount of the convex part 52d.
　実施の形態６によれば、磁極ティース４３Ａを容易に、かつ正確に第１位置および第２位置に位置決め保持できるので、電機子の製造工程を削減できるとともに、磁極ティース４３Ａの位置のばらつきが抑制され、回転電機の動作特性を向上させることができる。 According to the sixth embodiment, the magnetic teeth 43A can be easily and accurately positioned and held at the first position and the second position, so that the armature manufacturing process can be reduced and the variation in the positions of the magnetic teeth 43A is suppressed. Thus, the operating characteristics of the rotating electrical machine can be improved.
　ここで、上記実施の形態６において、補助孔を凸部５２ｄを挟んで長穴部５２ａと相対するように第１バックヨーク片５２に形成して凸部５２ｄを薄肉に構成し、嵌合部５７ｅの圧入時に、凸部５２ｄを弾性変形しやすくするようにしてもよい。 Here, in the sixth embodiment, the auxiliary hole is formed in the first back yoke piece 52 so as to face the elongated hole portion 52a across the convex portion 52d, and the convex portion 52d is configured to be thin, and the fitting portion The convex portion 52d may be easily elastically deformed during the press-fitting of 57e.
　なお、上記実施の形態６では、電機子鉄心４１Ａは、第１バックヨーク片５２と第１磁極ティース片５７の組と、第２バックヨーク片５１と第２磁極ティース片５６の組とを交互に積層して構成されているが、電機子鉄心は、この構成に限定されず、例えば、第１バックヨーク片５２と第１磁極ティース片５７の組の積層体を少なくとも１つ有し、残る積層部分を、第２バックヨーク片５１と第２磁極ティース片５６の組の積層体で構成してもよい。 In the sixth embodiment, the armature core 41A includes the first back yoke piece 52 and the first magnetic pole tooth piece 57, and the second back yoke piece 51 and the second magnetic pole tooth piece 56 alternately. However, the armature core is not limited to this configuration. For example, the armature core has at least one laminated body of a set of the first back yoke piece 52 and the first magnetic pole tooth piece 57, and remains. The laminated portion may be formed of a laminated body of a set of the second back yoke piece 51 and the second magnetic pole tooth piece 56.
　実施の形態７．
　図１９はこの発明の実施の形態７に係る回転電機における電機子鉄心の磁極ティース周りを示す要部平面図である。なお、図１９では、便宜上、電機子鉄心の一端に位置する第２バックヨーク片および第２磁極ティース片を省略している。 Embodiment 7 FIG.
FIG. 19 is a plan view of relevant parts showing the vicinity of the magnetic teeth of the armature core in the rotary electric machine according to Embodiment 7 of the present invention. In FIG. 19, for convenience, the second back yoke piece and the second magnetic pole tooth piece located at one end of the armature core are omitted.
　図１９において、第１バックヨーク片５３は、電磁鋼板から円環状に打ち抜かれ、突起部５３ａが、それぞれ、第１バックヨーク片５３の内周端から径方向内方に突出して、周方向に等角ピッチで２４個形成されている。円弧形状の嵌合部５３ｂが突起部５３ａのそれぞれの突出端から周方向両側に突出するように形成されている。抜きカシメ部５３ｃが、それぞれ、嵌合部５３ｂ間に位置するように、第１バックヨーク片５３の外周側に等角ピッチで形成されている。第１磁極ティース片５８は、電磁鋼板から打ち抜かれ、基部５８ａと、基部５８ａの先端から周方向両側に突出する鍔部５８ｂと、基部５８ａの中央位置に形成された抜きカシメ部５８ｃと、基部５８ａの根元部側の周方向中央位置に形成された円弧形状の長穴部５８ｄと、長穴部５８ｄを根元部外方に連通する連通部５８ｅと、を備える。 In FIG. 19, the first back yoke piece 53 is punched out from the magnetic steel sheet in an annular shape, and the protrusions 53 a protrude radially inward from the inner peripheral end of the first back yoke piece 53, respectively. 24 are formed at an equiangular pitch. Arc-shaped fitting portions 53b are formed so as to protrude from both protruding ends of the protruding portion 53a to both sides in the circumferential direction. The extraction caulking portions 53c are formed at equiangular pitches on the outer peripheral side of the first back yoke piece 53 so as to be positioned between the fitting portions 53b. The first magnetic pole tooth piece 58 is punched from an electromagnetic steel plate, and has a base portion 58a, a flange portion 58b protruding from the tip of the base portion 58a on both sides in the circumferential direction, a punched caulking portion 58c formed at the center position of the base portion 58a, and a base portion An arc-shaped elongated hole portion 58d formed at a circumferential center position on the root portion side of 58a, and a communication portion 58e that communicates the elongated hole portion 58d outward of the root portion.
　なお、実施の形態７では、第１バックヨーク片５０および第１磁極ティース片５５に替えて第１バックヨーク片５３および第１磁極ティース片５８を用いている点を除いて、上記実施の形態５と同様に構成されている。 In the seventh embodiment, the first embodiment is used except that the first back yoke piece 53 and the first magnetic pole tooth piece 58 are used instead of the first back yoke piece 50 and the first magnetic pole tooth piece 55. This is the same as in FIG.
　実施の形態７による電機子鉄心４１Ｂでは、第１バックヨーク片５３と第１磁極ティース片５８の組と、第２バックヨーク片５１と第２磁極ティース片５６の組とを交互に積層して構成されている。そして、第１バックヨーク片５３と第２バックヨーク片５１とを重ねた際に、抜きカシメ部５３ｃ，５１ａが重なり、第１および第２バックヨーク片５３，５１の積層体が一体化され、バックヨーク４２Ｂが作製される。また、第１および第２磁極ティース片５８，５６の積層体が抜きカシメ部５８ｃ、５６ｃの嵌合により一体化され、磁極ティース４３Ｂが作製される。そして、第１バックヨーク片５３の突起部５３ａが連通部５８ｅ内に挿入され、嵌合部５３ｂが長穴部５８ｄ内に遊嵌状態に挿入される。そして、嵌合部５３ｂが長穴部５８ｄの周方向一端に接して、磁極ティース４３Ｂが第１位置に位置し、嵌合部５３ｂが長穴部５８ｄの周方向他端に接して、磁極ティース４３Ｂが第２位置に位置する。 In the armature core 41B according to the seventh embodiment, the set of the first back yoke piece 53 and the first magnetic pole tooth piece 58 and the set of the second back yoke piece 51 and the second magnetic pole tooth piece 56 are alternately stacked. It is configured. And when the 1st back yoke piece 53 and the 2nd back yoke piece 51 are piled up, extraction caulking parts 53c and 51a overlap, and the layered product of the 1st and 2nd back yoke pieces 53 and 51 is unified, The back yoke 42B is produced. Further, the laminated body of the first and second magnetic pole tooth pieces 58 and 56 is integrated by fitting the caulking portions 58c and 56c, thereby producing the magnetic pole teeth 43B. And the projection part 53a of the 1st back yoke piece 53 is inserted in the communication part 58e, and the fitting part 53b is inserted in the long hole part 58d in a loose fitting state. The fitting portion 53b is in contact with one end of the elongated hole portion 58d in the circumferential direction, the magnetic pole teeth 43B are positioned at the first position, and the fitting portion 53b is in contact with the other circumferential end of the elongated hole portion 58d. 43B is located at the second position.
　実施の形態７では、バックヨーク４２Ｂが円環状の打ち抜かれた第１および第２バックヨーク片５３，５１を積層して作製され、磁極ティース４３Ｂがバックヨーク４２Ｂの内周側に位置して第１位値と第２位置との間を周方向に往復移動可能にバックヨーク４２Ｂに連結されている。したがって、実施の形態７においても、上記実施の形態５と同様の効果が得られる。 In the seventh embodiment, the back yoke 42B is manufactured by stacking the first and second back yoke pieces 53, 51 that are annularly punched, and the magnetic pole teeth 43B are positioned on the inner peripheral side of the back yoke 42B. The back yoke 42B is connected to the first position and the second position so as to be reciprocally movable in the circumferential direction. Therefore, also in Embodiment 7, the same effect as in Embodiment 5 can be obtained.
　ここで、実施の形態７において、凸部を長穴部５８ｄの周方向に延びる内周側の縁部の周方向両端側を外周側に突出するように形成し、嵌合部５３ｂが長穴部５８ｄの周方向一端に接するときに凸部を収容して圧入を解放し、かつ嵌合部５３ｂが長穴部５８ｄの周方向他端に接するときに凸部を収容して圧入を解放するように嵌合部５３ｂの内周側の縁部に凹部を形成してもよい。この場合、上記実施の形態６と同様に、磁極ティース４３Ｂを容易に、かつ正確に第１位置および第２位置に位置決め保持できる効果が得られる。さらに、補助孔を凸部を挟んで長穴部５８ｄと相対するように第１磁極ティース片５８に形成して凸部を薄肉に構成し、嵌合部５３ｄの圧入時に、凸部を弾性変形しやすくするようにしてもよい。 Here, in the seventh embodiment, the convex portion is formed so as to project both ends in the circumferential direction of the inner peripheral edge extending in the circumferential direction of the long hole portion 58d to the outer peripheral side, and the fitting portion 53b is a long hole. The convex portion is accommodated to release press-fitting when it contacts one circumferential end of the portion 58d, and the convex portion is accommodated to release press-fit when the fitting portion 53b contacts the other circumferential end of the elongated hole portion 58d. In this way, a recess may be formed on the inner peripheral edge of the fitting portion 53b. In this case, as in the sixth embodiment, the magnetic teeth 43B can be easily and accurately positioned and held at the first position and the second position. Further, the auxiliary hole is formed in the first magnetic pole tooth piece 58 so as to be opposed to the elongated hole portion 58d across the convex portion, and the convex portion is configured to be thin, and the convex portion is elastically deformed when the fitting portion 53d is press-fitted. You may make it easy to do.
　なお、上記実施の形態７では、電機子鉄心４１Ｂは、第１バックヨーク片５３と第１磁極ティース片５８の組と、第２バックヨーク片５１と第２磁極ティース片５６の組とを交互に積層して構成されているが、電機子鉄心は、この構成に限定されず、例えば、第１バックヨーク片５３と第１磁極ティース片５８の組の積層体を少なくとも１つ有し、残る積層部分を、第２バックヨーク片５１と第２磁極ティース片５６の組の積層体で構成してもよい。 In the seventh embodiment, the armature core 41B includes a set of the first back yoke piece 53 and the first magnetic pole tooth piece 58 and a set of the second back yoke piece 51 and the second magnetic pole tooth piece 56 alternately. However, the armature core is not limited to this configuration. For example, the armature core has at least one laminated body of the first back yoke piece 53 and the first magnetic pole tooth piece 58 and remains. The laminated portion may be formed of a laminated body of a set of the second back yoke piece 51 and the second magnetic pole tooth piece 56.
　実施の形態８．
　図２０はこの発明の実施の形態８に係る回転電機における電機子鉄心を示す平面図、図２１はこの発明の実施の形態８に係る回転電機における電機子鉄心を構成する第１バックヨーク片および第１磁極ティース片の配列状態を示す要部平面図、図２２はこの発明の実施の形態８に係る回転電機における電機子鉄心を構成する第２バックヨーク片および第２磁極ティース片の配列状態を示す要部平面図である。 Embodiment 8 FIG.
FIG. 20 is a plan view showing an armature core in a rotary electric machine according to Embodiment 8 of the present invention, and FIG. 21 shows a first back yoke piece constituting the armature core in the rotary electric machine according to Embodiment 8 of the present invention, and FIG. 22 is an essential part plan view showing an arrangement state of the first magnetic pole tooth pieces, and FIG. 22 is an arrangement state of the second back yoke piece and the second magnetic pole tooth piece constituting the armature core in the rotary electric machine according to Embodiment 8 of the present invention. It is a principal part top view which shows.
　図２０において、電機子鉄心６１は、円環状のバックヨーク６２と、それぞれ、バックヨーク６２の内周壁面から径方向内方に突出して、周方向に等角ピッチで配列された
２４本の磁極ティース６３と、を備える。 In FIG. 20, an armature core 61 includes an annular back yoke 62 and 24 magnetic poles that protrude radially inward from the inner peripheral wall surface of the back yoke 62 and are arranged at equiangular pitches in the circumferential direction. Teeth 63.
　バックヨーク６２は、図２１および図２２に示されるように、電磁鋼板から打ち抜かれた円環状の第１および第２バックヨーク片７０，７１を備える。そして、断面円形の軸部７０ａが、それぞれ、第１バックヨーク片７０の一面から突出して、第１バックヨーク片７０の内周側に等角ピッチで周方向に２４個形成されている。抜きカシメ部７０ｂが、それぞれ、軸部７０ａ間に位置して、第１バックヨーク片７０の外周側に等角ピッチで形成されている。切り欠き部７１ａが、それぞれ、内周側に開口して、第２バックヨーク片７１に周方向に等角ピッチで、軸部７０ａと同数形成されている。抜きカシメ部７１ｂが、それぞれ、切り欠き部７１ａ間に位置して、第２バックヨーク片７１の外周側に等角ピッチで形成されている。そして、第１バックヨーク片７０と第２バックヨーク片７１とを重ねた際に、抜きカシメ部７０ｂ，７１ｂが重なる。 21 and 22, the back yoke 62 includes annular first and second back yoke pieces 70 and 71 punched from an electromagnetic steel plate. Then, each of the shaft sections 70a having a circular cross section protrudes from one surface of the first back yoke piece 70 and is formed in the circumferential direction at an equiangular pitch on the inner peripheral side of the first back yoke piece 70. The punched caulking portions 70b are respectively positioned between the shaft portions 70a and formed on the outer peripheral side of the first back yoke piece 70 at an equiangular pitch. The cutout portions 71a are opened to the inner peripheral side, and are formed in the second back yoke piece 71 at the same number as the shaft portion 70a at an equiangular pitch in the circumferential direction. The punched caulking portions 71b are respectively formed between the cutout portions 71a and formed at an equiangular pitch on the outer peripheral side of the second back yoke piece 71. And when the 1st back yoke piece 70 and the 2nd back yoke piece 71 are piled up, extraction caulking part 70b, 71b overlaps.
　磁極ティース６３は、図２１および図２２に示されるように、電磁鋼板から打ち抜かれた第１および第２磁極ティース片７５，７６を備える。第１磁極ティース片７５は、基部７５ａと、基部７５ａの先端から周方向両側に突出する鍔部７５ｂと、基部７５ａの中央位置に形成された抜きカシメ部７５ｃと、を備える。第２磁極ティース片７６は、基部７６ａと、基部７６ａの先端から周方向両側に突出する鍔部７６ｂと、基部７６ａの中央位置に形成された抜きカシメ部７６ｃと、基部７６ａの根元部側の周方向中央位置に形成された円弧形状の長穴部７６ｄと、を備える。そして、第１磁極ティース片７５と第２磁極ティース片７６とを重ねた際に、抜きカシメ部７５ｃ，７６ｃが重なる。 As shown in FIG. 21 and FIG. 22, the magnetic pole teeth 63 are provided with first and second magnetic pole teeth pieces 75 and 76 punched from the electromagnetic steel sheet. The first magnetic pole tooth piece 75 includes a base portion 75a, a flange portion 75b protruding from the tip of the base portion 75a to both sides in the circumferential direction, and a punched caulking portion 75c formed at the center position of the base portion 75a. The second magnetic pole teeth piece 76 includes a base portion 76a, a flange portion 76b projecting from the tip of the base portion 76a to both sides in the circumferential direction, a punched caulking portion 76c formed at a central position of the base portion 76a, and a base portion side of the base portion 76a. An arc-shaped elongated hole portion 76d formed at the center in the circumferential direction. And when the 1st magnetic pole tooth piece 75 and the 2nd magnetic pole tooth piece 76 are piled up, the extraction caulking part 75c, 76c overlaps.
　ここで、切り欠き７１ａの周方向に延びる底部が、第２バックヨーク片７１の軸心を中心とする円弧形状に形成され、基部７６ａの根元側端部が、切り欠き７１ａの底部と略等しい曲率半径の円弧形状に形成されている。さらに、基部７６ａの根元側端部の周方向幅が、切り欠き７１ａの周方向幅より短くなっている。 Here, the bottom portion extending in the circumferential direction of the notch 71a is formed in an arc shape centering on the axis of the second back yoke piece 71, and the base side end portion of the base portion 76a is substantially equal to the bottom portion of the notch 71a. It is formed in an arc shape with a radius of curvature. Furthermore, the circumferential width of the base side end of the base portion 76a is shorter than the circumferential width of the notch 71a.
　電機子鉄心６１を作製するには、まず、図２１に示されるように、第１バックヨーク片７０を配置し、第１磁極ティース片７５を第１バックヨーク片７０の内周側に、かつ第１バックヨーク片７０と面一として、周方向に等角ピッチで配置する。ついで、第２バックヨーク片７１を第１バックヨーク片７０上に配置する。さらに、図２２に示されるように、軸部７０ａを長穴部７６ｄ内に挿入するように、第２磁極ティース片７６を第１磁極ティース片７５のそれぞれの上に重ねて、第２バックヨーク片７１と面一に配置する。この操作を必要回数繰り返し行い、第１および第２バックヨーク片７０，７１の積層体が抜きカシメ部７０ｂ，７１ｂの嵌合により固定、一体化され、円環状のバックヨーク６２が形成される。また、第１および第２磁極ティース片７５，７６の積層体が抜きカシメ部７５ｃ，７６ｃの嵌合により固定、一体化され、磁極ティース６３が形成される。 In order to manufacture the armature core 61, first, as shown in FIG. 21, the first back yoke piece 70 is disposed, and the first magnetic pole tooth piece 75 is disposed on the inner peripheral side of the first back yoke piece 70, and The first back yoke piece 70 and the first back yoke piece 70 are flush with each other at an equiangular pitch in the circumferential direction. Next, the second back yoke piece 71 is disposed on the first back yoke piece 70. Further, as shown in FIG. 22, the second magnetic pole teeth piece 76 is overlaid on each of the first magnetic pole teeth pieces 75 so that the shaft portion 70 a is inserted into the elongated hole portion 76 d, and the second back yoke. Arranged flush with the piece 71. This operation is repeated as many times as necessary, and the laminated body of the first and second back yoke pieces 70, 71 is fixed and integrated by fitting the crimping portions 70b, 71b, thereby forming an annular back yoke 62. Further, the laminated body of the first and second magnetic pole tooth pieces 75 and 76 is fixed and integrated by fitting the crimping portions 75c and 76c to form the magnetic pole teeth 63.
　このように作製された電機子鉄心６１は、軸部７０ａが長穴部７６ｄ内に挿入され、磁極ティース６３が周方向にスライド移動可能となっている。そこで、磁極ティース６３は、軸部７０ａが長穴部７６ｄの周方向他端に接する第１位置と、軸部７０ａが長穴部７６ｄの周方向一端に接する第１位置との間を往復移動可能に、バックヨーク６２に取り付けられている。そして、磁極ティース６３のそれぞれの長穴部７６ｄの周方向一端が軸部７０ａに接すると、隣り合う磁極ティース６３間の隙間、すなわちスロット開口幅が縮小された状態となる。また、一の磁極ティース６３の長穴部７６ｄの周方向他端が軸部７０ａに接すると、隣り合う磁極ティース６３間の隙間、すなわちスロット開口幅が拡大された状態となる。 In the armature core 61 manufactured in this way, the shaft portion 70a is inserted into the elongated hole portion 76d, and the magnetic pole teeth 63 are slidable in the circumferential direction. Therefore, the magnetic teeth 63 reciprocate between a first position where the shaft portion 70a is in contact with the other circumferential end of the elongated hole portion 76d and a first position where the shaft portion 70a is in contact with one circumferential end of the elongated hole portion 76d. It is attached to the back yoke 62 as possible. When one end in the circumferential direction of each elongated hole portion 76d of the magnetic pole teeth 63 comes into contact with the shaft portion 70a, a gap between adjacent magnetic pole teeth 63, that is, a slot opening width is reduced. Further, when the other circumferential end of the elongated hole portion 76d of one magnetic pole tooth 63 is in contact with the shaft portion 70a, a gap between adjacent magnetic pole teeth 63, that is, a slot opening width is expanded.
　実施の形態８においても、上記実施の形態１と同様に、コイル１５ａが、導体線束を周方向に連続する２本の磁極ティース６３の両側に位置するスロット６４のそれぞれに挿入して、電機子鉄心６１に装着される。そして、コイル１５ａは、例えば、反時計回りに、１スロットピッチずつすらしながら、電機子鉄心６１に装着される。 Also in the eighth embodiment, similarly to the first embodiment, the coil 15a inserts the conductor wire bundle into each of the slots 64 positioned on both sides of the two magnetic pole teeth 63 that are continuous in the circumferential direction. Attached to the iron core 61. Then, the coil 15a is attached to the armature core 61, for example, counterclockwise even by one slot pitch.
　実施の形態８によれば、バックヨーク６２が円環状の打ち抜かれた第１および第２バックヨーク片７０，７１を積層して作製され、磁極ティース６３がバックヨーク６２の内周側に位置して第１位置と第２位置との間を周方向に往復移動可能にバックヨーク６２に連結されている。そこで、導体線束が挿入されているスロット６４の一側に位置する磁極ティース６３を第１位置に移動させて、スロット開口幅を拡大し、コイル１５ａの導体電束を拡大されたスロット開口からスロット６４に挿入できるので、コイル１５ａの電機子鉄心６１への装着が容易となり、コイル１５ａの装着作業性が向上される。これにより、コイル１５ａをスロット６４内に整列して挿入しやすくなり、占積率が向上され、回転電機の動作特性を向上させることができる。 According to the eighth embodiment, the back yoke 62 is produced by laminating the first and second back yoke pieces 70 and 71 that are annularly punched, and the magnetic teeth 63 are located on the inner peripheral side of the back yoke 62. The back yoke 62 is connected to the first position and the second position so as to reciprocate in the circumferential direction. Therefore, the magnetic teeth 63 positioned on one side of the slot 64 in which the conductor wire bundle is inserted are moved to the first position, the slot opening width is expanded, and the conductor electric flux of the coil 15a is expanded from the expanded slot opening to the slot. 64, the coil 15a can be easily mounted on the armature core 61, and the mounting workability of the coil 15a is improved. As a result, the coil 15a can be easily inserted into the slot 64 in an aligned manner, the space factor can be improved, and the operating characteristics of the rotating electrical machine can be improved.
　バックヨーク６２を変形・移動させることなく、磁極ティース６３を周方向移動させるのみでスロット開口幅を拡大でき、コイル１５ａのスロット６４への挿入作業性を向上させることができる。そこで、大径あるいは積層数の多い電機子鉄心６１に対しても、少ないエネルギーを要するのみで、同様の効果が得られる。
　バックヨーク６２が円環状の第１および第２バックヨーク片７０，７１を積層、一体化して作製されているので、真円度が高められ、回転電機の動作特性を向上させることができる。また、コイル１５ａの電機子鉄心６１への装着が完了した後、電機子鉄心６１を円環状に戻す必要がないので、電機子鉄心６１の真円度を高精度に確保することができる。 The slot opening width can be expanded only by moving the magnetic teeth 63 in the circumferential direction without deforming and moving the back yoke 62, and the workability of inserting the coil 15a into the slot 64 can be improved. Therefore, the same effect can be obtained for the armature core 61 having a large diameter or a large number of layers only by requiring less energy.
Since the back yoke 62 is formed by laminating and integrating the annular first and second back yoke pieces 70 and 71, the roundness can be increased and the operating characteristics of the rotating electrical machine can be improved. Further, since it is not necessary to return the armature core 61 to an annular shape after the mounting of the coil 15a to the armature core 61 is completed, the roundness of the armature core 61 can be ensured with high accuracy.
　さらに、実施の形態８では、複数の分割積層鉄心を無端状に連結して構成されている従来の電機子鉄心構造で必要であった剛性を高める工程が不要となるので、作業工数の削減が図られるとともに、低コスト化が図られる。 Furthermore, in the eighth embodiment, since the process of increasing the rigidity required in the conventional armature core structure configured by connecting a plurality of divided laminated cores in an endless manner is unnecessary, the number of work steps can be reduced. In addition, the cost can be reduced.
　なお、上記実施の形態８では、電機子鉄心６１は、第１バックヨーク片７０と第１磁極ティース片７５の組と、第２バックヨーク片７１と第２磁極ティース片７６の組とを交互に積層して構成されているが、電機子鉄心は、第１および第２バックヨーク片７０，７１と第１および第２磁極ティース片７５，７６のみで構成する必要はなく、第１バックヨーク片７０と第１磁極ティース片７５の組と、第２バックヨーク片７１と第２磁極ティース片７６の組との積層体を少なくとも１つ有していればよい。 In the eighth embodiment, the armature core 61 includes a set of the first back yoke piece 70 and the first magnetic pole tooth piece 75 and a set of the second back yoke piece 71 and the second magnetic pole tooth piece 76 alternately. However, the armature core does not have to be composed of only the first and second back yoke pieces 70 and 71 and the first and second magnetic pole tooth pieces 75 and 76, but the first back yoke. It suffices to have at least one laminate of a set of the piece 70 and the first magnetic pole tooth piece 75 and a set of the second back yoke piece 71 and the second magnetic pole tooth piece 76.
　例えば、電磁鋼板から打ち抜かれた円環状の第３バックヨーク片および第１磁極ティース片７５を用意する。第３バックヨーク片は軸部７０ａが省略されている点を除いて、第１バックヨーク片７０と同様に作製されている。そして、電機子鉄心を構成する一部の積層部分を、第１および第２バックヨーク片７０，７１と第１および第２磁極ティース片７５，７６を積層して構成し、電機子鉄心を構成する残る積層部分を、第３バックヨーク片と第１磁極ティース片７５を積層して構成してもよい。この場合、バックヨークにおける切り欠き部７１ａの占める割合が低減され、電機子鉄心を構成する鉄量を増加できるので、回転電機の動作特性を向上、例えばモータの効率を向上させることができる。 For example, an annular third back yoke piece and a first magnetic pole tooth piece 75 punched from an electromagnetic steel sheet are prepared. The third back yoke piece is manufactured in the same manner as the first back yoke piece 70 except that the shaft portion 70a is omitted. A part of the laminated portion constituting the armature core is constituted by laminating the first and second back yoke pieces 70 and 71 and the first and second magnetic pole tooth pieces 75 and 76 to constitute the armature core. The remaining laminated portion may be constituted by laminating the third back yoke piece and the first magnetic pole tooth piece 75. In this case, since the proportion of the notch 71a in the back yoke is reduced and the amount of iron constituting the armature core can be increased, the operating characteristics of the rotating electrical machine can be improved, for example, the efficiency of the motor can be improved.
　また、上記実施の形態８においても、上記実施の形態２と同様に、凸部を長穴部７６ｄの周方向に延びる内周側又は外周側の縁部の周方向両端側を外周側に突出するように形成し、長穴部７６ｄの穴幅（径方向幅）を凸部の位置で狭くしてもよい。さらに、上記実施の形態３と同様に、第２磁極ティース片７６の凸部の内周側又は外周側に補助孔を形成して、凸部を薄肉に構成してもよい。
　また、実施の形態８では、軸部７０ａが断面円形に形成されているが、上記実施の形態４と同様に、軸部を断面楕円形の軸部としてもよい。 Also in the eighth embodiment, as in the second embodiment, the convex portions protrude on the outer peripheral side at both ends in the circumferential direction of the inner peripheral side or outer peripheral side of the elongated hole portion 76d in the circumferential direction. The hole width (diameter width) of the long hole portion 76d may be narrowed at the position of the convex portion. Further, as in the third embodiment, auxiliary holes may be formed on the inner peripheral side or the outer peripheral side of the convex portion of the second magnetic pole piece 76 to make the convex portion thin.
In the eighth embodiment, the shaft portion 70a is formed in a circular cross section. However, as in the fourth embodiment, the shaft portion may be a shaft portion having an elliptical cross section.
　なお、上記各実施の形では、１０極２４スロットに回転電機について説明しているが、極数スロット数はこれに限定されない。
　また、上記各実施の形態では、磁極ティースが円環状のバックヨークの内周面から径方向内方に突出している電機子鉄心について説明しているが、本発明は、磁極ティースが円環状のバックヨークの外周面から径方向外方に突出している電機子鉄心に適用しても同様の効果が得られる。 In each of the above embodiments, the rotating electric machine is described with 10 poles and 24 slots, but the number of pole slots is not limited to this.
In each of the above embodiments, the armature core in which the magnetic teeth protrude from the inner peripheral surface of the annular back yoke radially inward has been described. However, in the present invention, the magnetic teeth are annular. The same effect can be obtained even when applied to an armature core projecting radially outward from the outer peripheral surface of the back yoke.
　また、上記各実施の形態では、コイルを周方向に１スロットピッチで配列して電機子鉄心に装着しているが、コイルの配列ピッチは１スロットピッチに限定されず、周知の通り、コイルを、２スロットピッチ以上の配列ピッチで配列したり、複数の配列ピッチで配列してもよい。 In each of the above embodiments, the coils are arranged at a pitch of 1 slot in the circumferential direction and attached to the armature core. However, the arrangement pitch of the coils is not limited to a pitch of 1 slot. They may be arranged with an arrangement pitch of 2 slots or more, or with a plurality of arrangement pitches.

Claims (15)

  1. 　円環状のバックヨーク、および、それぞれ、上記バックヨークの径方向一側に突出して周方向に配列された複数の磁極ティースを有する回転電機の電機子鉄心であって、
    　上記バックヨークが、円環状のバックヨーク片を積層、一体化して構成され、
    　上記複数の磁極ティースが、それぞれ、磁極ティース片を積層、一体化して構成され、周方向に離間する第１位置と第２位置との間を周方向に往復移動可能に上記バックヨークに連結されていることを特徴とする回転電機の電機子鉄心。     An annular back yoke, and an armature core of a rotating electrical machine having a plurality of magnetic pole teeth that are arranged in the circumferential direction so as to protrude to one radial direction of the back yoke,
    The back yoke is configured by laminating and integrating annular back yoke pieces,
    Each of the plurality of magnetic pole teeth is configured by laminating and integrating magnetic pole teeth pieces, and is coupled to the back yoke so as to be reciprocally movable in a circumferential direction between a first position and a second position that are separated in the circumferential direction. An armature core of a rotating electric machine characterized by
  2. 　上記バックヨーク片は、少なくとも、径方向一側に開口する切り欠き部が周方向に等角ピッチで上記磁極ティースと同数形成された第１バックヨーク片と、穴方向を周方向とする円弧形状の長穴部が周方向に等角ピッチで上記切り欠き部と同数形成され、上記長穴部を上記切り欠き部内に位置させて上記第１バックヨーク片に重ねて配置される第２バックヨーク片とを有し、
    　上記磁極ティース片は、少なくとも、それぞれ、第１基部、上記第１基部の長さ方向の一端に形成された突起部および上記突起部の一面に形成された軸部を有し、上記軸部を上記長穴部内に嵌め込み、上記突起部を上記切り欠き部内に位置させて上記第１基部を上記第１バックヨーク片から径方向一側に突出させて、上記第１バックヨーク片と面一に配置される第１磁極ティース片と、それぞれ、上記第１基部と同じ外形形状に形成され、上記第１基部に重ねて上記第２バックヨーク片と面一に配置される上記第２磁極ティース片とを有し、
    　上記磁極ティースは、上記軸部を上記長穴部内をスライド移動させて、上記軸部が上記長穴部の周方向一端に接して上記第１位置に位置し、上記軸部が上記長穴部の周方向他端に接して上記第２位置に位置するように構成されていることを特徴とする請求項１記載の回転電機の電機子鉄心。     The back yoke piece includes at least a first back yoke piece in which the number of notches opened on one side in the radial direction is formed in the circumferential direction with the same number as the magnetic teeth, and an arc shape having the hole direction as the circumferential direction. The second back yoke is formed so as to have the same number of the elongated hole portions as the cutout portions at an equiangular pitch in the circumferential direction, and the elongated hole portions are positioned in the cutout portions and are superposed on the first back yoke piece. And having a piece,
    Each of the magnetic teeth pieces has at least a first base, a protrusion formed at one end in the length direction of the first base, and a shaft formed on one surface of the protrusion. Fit into the elongated hole, place the protrusion in the notch, and project the first base from the first back yoke piece in the radial direction, flush with the first back yoke piece. The first magnetic pole teeth pieces that are arranged in the same outer shape as the first base portion and that are arranged flush with the second back yoke piece and that are overlapped with the first base portion. And
    The magnetic pole teeth slide the shaft portion in the elongated hole portion, the shaft portion is in contact with one circumferential end of the elongated hole portion and is positioned at the first position, and the shaft portion is the elongated hole portion. The armature core of a rotating electrical machine according to claim 1, wherein the armature core is configured to be in contact with the other circumferential end of the first and second positions.
  3. 　上記第２バックヨーク片は、上記長穴部の径方向一側又は他側の周方向両側に上記長穴部の穴幅を狭くする凸部を有し、
    　上記磁極ティースが、周方向に移動する途中で、上記軸部が上記凸部に圧入され、その後、上記軸部の圧入が解放されて、上記第１位値又は上記第２位置に位置するように構成されていることを特徴とする請求項２記載の回転電機の電機子鉄心。     The second back yoke piece has convex portions that narrow the hole width of the long hole portion on one side in the radial direction of the long hole portion or on both sides in the circumferential direction,
    While the magnetic teeth are moving in the circumferential direction, the shaft portion is press-fitted into the convex portion, and then the press-fitting of the shaft portion is released to be positioned at the first position or the second position. The armature core of the rotating electrical machine according to claim 2, wherein the armature core is configured as follows.
  4. 　補助孔が、上記凸部を挟んで上記長穴部に相対するように上記第２バックヨーク片に形成され、上記軸部の圧入時に上記凸部を弾性変形させるように構成されていることを特徴とする請求項３記載の回転電機の電機子鉄心。 An auxiliary hole is formed in the second back yoke piece so as to face the elongated hole portion with the convex portion interposed therebetween, and is configured to elastically deform the convex portion when the shaft portion is press-fitted. The armature core of the rotary electric machine according to claim 3,
  5. 　上記バックヨーク片は、少なくとも、軸部が周方向に等角ピッチで上記磁極ティースと同数形成された第１バックヨーク片と、径方向一側に開口する切り欠き部が周方向に等角ピッチで上記軸部と同数形成され、上記軸部を上記切り欠き部内に位置させて上記第１バックヨーク片に重ねて配置される第２バックヨーク片とを有し、
    　上記磁極ティース片は、少なくとも、それぞれ、第１基部を有し、上記第１基部を上記軸部のそれぞれに径方向一側に位置させて、上記第１バックヨーク片の径方向一側に、かつ上記第１バックヨーク片と面一に配置される第１磁極ティース片と、それぞれ、第２基部、および上記第２基部の径方向他側に形成された円弧形状の長穴部を有し、上記第２基部の径方向他側を上記切り欠き部内に位置させて上記軸部を上記長穴部内に嵌め込み、上記第２基部を上記第１基部に重ねて上記第２バックヨーク片と面一に配置される上記第２磁極ティース片とを有し、
    　上記磁極ティースは、上記軸部を案内にしてスライド移動させて、上記軸部が上記長穴部の周方向他端に接して上記第１位置に位置し、上記軸部が上記長穴部の周方向一端に接して上記第２位置に位置するように構成されていることを特徴とする請求項１記載の回転電機の電機子鉄心。     The back yoke piece includes at least a first back yoke piece having a shaft portion formed in the circumferential direction at an equiangular pitch and the same number as the magnetic pole teeth, and a notch portion opened to one side in the radial direction at an equiangular pitch in the circumferential direction. And the second back yoke piece that is formed in the same number as the shaft portion, and is disposed to overlap the first back yoke piece with the shaft portion positioned in the notch portion,
    Each of the magnetic teeth pieces has at least a first base portion, and the first base portion is positioned on one radial side of each of the shaft portions, and on the one radial direction side of the first back yoke piece, And a first magnetic pole tooth piece disposed flush with the first back yoke piece, a second base part, and an arc-shaped elongated hole part formed on the other radial side of the second base part, respectively. The other side in the radial direction of the second base portion is positioned in the notch portion, the shaft portion is fitted into the elongated hole portion, and the second base portion is overlapped with the first base portion to face the second back yoke piece. And the second magnetic pole teeth piece arranged in one,
    The magnetic pole teeth are slid with the shaft portion as a guide so that the shaft portion is in contact with the other circumferential end of the elongated hole portion and is positioned at the first position, and the shaft portion is in contact with the elongated hole portion. The armature core of a rotating electrical machine according to claim 1, wherein the armature core is configured to be in contact with one end in the circumferential direction and located at the second position.
  6. 　上記第２磁極ティース片は、上記長穴部の径方向一側又は他側の周方向両側に上記長穴部の穴幅を狭くする凸部を有し、
    　上記磁極ティースが、周方向に移動する途中で、上記軸部が上記凸部に圧入され、その後、上記軸部の圧入が解放されて、上記第１位値又は上記第２位置に位置するように構成されていることを特徴とする請求項５記載の回転電機の電機子鉄心。     The second magnetic pole tooth piece has a convex portion that narrows the hole width of the long hole portion on one side in the radial direction of the long hole portion or on both sides in the circumferential direction,
    While the magnetic teeth are moving in the circumferential direction, the shaft portion is press-fitted into the convex portion, and then the press-fitting of the shaft portion is released to be positioned at the first position or the second position. The armature core of the rotating electrical machine according to claim 5, wherein the armature core is configured as follows.
  7. 　補助孔が、上記凸部を挟んで上記長穴部と相対するように上記第２磁極ティース片に形成され、上記軸の圧入時に上記凸部を弾性変形させるように構成されていることを特徴とする請求項６記載の回転電機の電機子鉄心。 An auxiliary hole is formed in the second magnetic pole tooth piece so as to face the elongated hole portion across the convex portion, and is configured to elastically deform the convex portion when the shaft is press-fitted. The armature core of the rotating electrical machine according to claim 6.
  8. 　上記軸部が断面楕円形であることを特徴とする請求項２から請求項７のいずれか１項に記載の回転電機の電機子鉄心。 The armature core of a rotating electrical machine according to any one of claims 2 to 7, wherein the shaft portion has an elliptical cross section.
  9. 　上記バックヨーク片は、少なくとも、穴方向を周方向とする円弧形状の長穴部が周方向に等角ピッチで上記磁極ティースと同数形成され、かつ連通部が上記長穴部を径方向一側に開口させるように形成された第１バックヨーク片と、上記第１バックヨーク片に重ねて配置され、上記長穴部および上記連通部を覆う第２バックヨーク片とを有し、
    　上記磁極ティースは、少なくとも、それぞれ、第１基部、上記第１基部の長さ方向の一端に形成された突起部および上記突起部の一端から周方向両側に突出する円弧形状の嵌合部を有し、上記嵌合部を上記長穴部内に嵌め込み、かつ上記突起部を上記連通部内に位置させ、上記第１基部を上記第１バックヨーク片から径方向一側に突出させて、上記第１バックヨーク片と面一に配置される第１磁極ティース片と、それぞれ、上記第１基部と同じ外形形状に形成され、上記第１基部に重ねて上記第２バックヨーク片と面一に配置される上記第２磁極ティース片とを有し、
    　上記磁極ティースは、上記嵌合部を上記長穴部内をスライド移動させて、上記嵌合部が上記長穴部の周方向一端に接して上記第１位置に位置し、上記嵌合部が上記長穴部の周方向他端に接して上記第２位置に位置するように構成されていることを特徴とする請求項１記載の回転電機の電機子鉄心。     The back yoke piece has at least the same number of arc-shaped elongated hole portions as the circumferential direction in the hole direction and the same number of the magnetic teeth as the circumferential direction, and the communicating portion is on the radial side of the elongated hole portion. A first back yoke piece formed so as to open to the first back yoke piece, and a second back yoke piece arranged to overlap the first back yoke piece and covering the elongated hole part and the communication part,
    Each of the magnetic pole teeth has at least a first base, a protrusion formed at one end in the length direction of the first base, and an arc-shaped fitting portion protruding from one end of the protrusion to both sides in the circumferential direction. The fitting portion is fitted into the elongated hole portion, the projection portion is positioned in the communication portion, and the first base portion is protruded from the first back yoke piece to one side in the radial direction. A first magnetic pole tooth piece that is arranged flush with the back yoke piece, is formed in the same outer shape as the first base part, and is arranged flush with the second back yoke piece so as to overlap the first base part. Said second magnetic pole teeth piece,
    The magnetic teeth slide the fitting portion in the elongated hole portion, the fitting portion is in contact with one end in the circumferential direction of the elongated hole portion and is positioned at the first position, and the fitting portion is The armature core of a rotating electrical machine according to claim 1, wherein the armature core is configured to be in contact with the other circumferential end of the elongated hole portion and located at the second position.
  10. 　上記第１バックヨーク片は、上記長穴部の径方向他側の周方向両側に上記長穴部の穴幅を狭くする凸部を有し、
    　上記第１磁極ティース片は、上記磁極ティースが上記第１位置に位置しているときに上記凸部を収納し、かつ上記磁極ティースが上記第２位置に位置しているときに上記凸部を収納するように、上記嵌合部の径方向他側の周方向両側のそれぞれに形成された凹部を有し、
    　上記磁極ティースが、周方向に移動する途中で、上記嵌合部が上記凸部に圧入され、その後、上記凸部が上記凹部に収納されて、上記嵌合部の圧入が解放され、上記第１位値又は上記第２位置に位置するように構成されていることを特徴とする請求項９記載の回転電機の電機子鉄心。     The first back yoke piece has convex portions that narrow the hole width of the long hole portion on both sides in the circumferential direction on the other radial side of the long hole portion,
    The first magnetic pole tooth piece accommodates the convex portion when the magnetic pole tooth is located at the first position, and the convex portion when the magnetic pole tooth is located at the second position. In order to house, it has a recess formed on each of both sides in the circumferential direction on the other radial side of the fitting part,
    While the magnetic teeth are moving in the circumferential direction, the fitting portion is press-fitted into the convex portion, and then the convex portion is housed in the concave portion, so that the press-fitting of the fitting portion is released, and the first The armature core of the rotating electrical machine according to claim 9, wherein the armature core is configured to be located at a first value or the second position.
  11. 　補助孔が、上記凸部を挟んで上記長穴部と相対するように上記第１バックヨーク片に形成され、上記嵌合部の圧入時に上記凸部を弾性変形させるように構成されていることを特徴とする請求項１０記載の回転電機の電機子鉄心。 An auxiliary hole is formed in the first back yoke piece so as to face the elongated hole portion across the convex portion, and is configured to elastically deform the convex portion when the fitting portion is press-fitted. The armature core of the rotating electrical machine according to claim 10.
  12. 　上記バックヨーク片は、少なくとも、径方向一側に突出する突起部が周方向に等角ピッチで上記磁極ティースと同数形成され、円弧形状の嵌合部が上記突起部の一端から周方向両側に突出するように形成された第１バックヨーク片と、上記第１バックヨーク片に重ねて配置される上記第２バックヨーク片とを有し、
    　上記磁極ティース片は、少なくとも、それぞれ、第１基部、上記第１基部の長さ方向の一端側に形成された円弧形状の長穴部、および上記長穴部を上記第１基部の一端側とを連通する連通部を有し、上記嵌合部を上記長穴部内に嵌め込み、上記突起部を上記連通部内に位置させ、上記第１基部を上記第１バックヨーク片から径方向一側に突出させて、上記第１バックヨーク片と面一に配置される第１磁極ティース片と、それぞれ、上記第１基部と同じ外形形状に形成され、上記第１基部に重ねて上記第２バックヨーク片と面一に配置される上記第２磁極ティース片とを有し、
    　上記磁極ティースは、上記嵌合部を案内にしてスライド移動させて、上記嵌合部が上記長穴部の周方向他端に接して上記第１位置に位置し、上記嵌合部が上記長穴部の周方向一端に接して上記第２位置に位置するように構成されていることを特徴とする請求項１記載の回転電機の電機子鉄心。     The back yoke piece has at least protrusions protruding in one radial direction at an equal pitch in the circumferential direction and the same number as the magnetic teeth, and arc-shaped fitting parts from one end of the protrusion to both sides in the circumferential direction. A first back yoke piece formed so as to protrude, and the second back yoke piece arranged to overlap the first back yoke piece,
    The magnetic teeth piece includes at least a first base, an arc-shaped long hole formed on one end in the length direction of the first base, and the long hole as one end of the first base. The fitting portion is fitted into the elongated hole portion, the projection portion is positioned in the communication portion, and the first base portion projects from the first back yoke piece to one side in the radial direction. The first back yoke piece is formed in the same outer shape as the first base, and the second back yoke piece is formed so as to overlap the first base. And the second magnetic pole teeth piece arranged flush with each other,
    The magnetic teeth are slid with the fitting portion as a guide so that the fitting portion is in contact with the other circumferential end of the elongated hole portion and positioned at the first position, and the fitting portion is the long piece. The armature core of the rotating electrical machine according to claim 1, wherein the armature core is configured to be in contact with one end in the circumferential direction of the hole and located at the second position.
  13. 　上記第１磁極ティース片は、上記長穴部の径方向一側の周方向両側に上記長穴部の穴幅を狭くする凸部を有し、
    　上記第１バックヨーク片は、上記磁極ティースが上記第１位置に位置しているときに上記凸部を収納し、かつ上記磁極ティースが上記第２位置に位置しているときに上記凸部を収納するように、上記嵌合部の径方向一側の周方向両側のそれぞれに形成された凹部を有し、
    　上記磁極ティースが、周方向に移動する途中で、上記嵌合部が上記凸部に圧入され、その後、上記凸部が上記凹部に収納されて、上記嵌合部の圧入が解放され、上記第１位値又は上記第２位置に位置するように構成されていることを特徴とする請求項１２記載の回転電機の電機子鉄心。     The first magnetic pole tooth piece has convex portions that narrow the hole width of the long hole portion on both sides in the circumferential direction on one side in the radial direction of the long hole portion,
    The first back yoke piece houses the convex portion when the magnetic pole teeth are located at the first position, and the convex portion when the magnetic pole teeth are located at the second position. In order to house, it has a recess formed in each of the circumferential side on one side in the radial direction of the fitting portion,
    While the magnetic teeth are moving in the circumferential direction, the fitting portion is press-fitted into the convex portion, and then the convex portion is housed in the concave portion, so that the press-fitting of the fitting portion is released, and the first The armature core of the rotating electric machine according to claim 12, wherein the armature core is configured to be located at a first value or the second position.
  14. 　補助孔が、上記凸部を挟んで上記長穴部と相対するように上記第１磁極ティース片に形成され、上記嵌合部の圧入時に上記凸部を弾性変形させるように構成されていることを特徴とする請求項１３記載の回転電機の電機子鉄心。 An auxiliary hole is formed in the first magnetic pole tooth piece so as to face the elongated hole portion across the convex portion, and is configured to elastically deform the convex portion when the fitting portion is press-fitted. The armature core of the rotary electric machine according to claim 13.
  15. 　円環状のバックヨーク、および、それぞれ、上記バックヨークの径方向一側に突出して、かつ周方向に往復移動可能に上記バックヨークに連結されて、周方向に配列された複数の磁極ティースを有する電機子鉄心と、
    　それぞれ、周方向に連続する複数の上記磁極ティースの両側に位置する２つのスロットに挿入されて、上記電機子鉄心に周方向に配列された複数のコイルからなる電機子コイルと、を有する回転電機の電機子の製造方法であって、
    　上記コイルが挿入される上記スロットの両側に位置する上記磁極ティースを離間する方向に移動させてスロット開口幅を拡大させ、上記コイルを拡大されたスロット開口から上記スロット内に挿入させ、その後上記磁極ティースを近接する方向に移動させてスロット開口幅を縮小させて上記コイルを装着するコイル装着工程を繰り返して、上記コイルを上記コイルの周方向の配列順に上記電機子鉄心に順次装着する電機子コイル装着工程を有する回転電機の電機子の製造方法。     An annular back yoke, and a plurality of magnetic pole teeth arranged in the circumferential direction, each projecting to one side in the radial direction of the back yoke and coupled to the back yoke so as to be capable of reciprocating in the circumferential direction Armature core,
    A rotating electrical machine having an armature coil that is inserted into two slots located on both sides of the plurality of magnetic pole teeth that are continuous in the circumferential direction, and includes a plurality of coils arranged in the circumferential direction on the armature core. A method of manufacturing an armature of
    The magnetic pole teeth positioned on both sides of the slot into which the coil is inserted are moved away from each other to increase the slot opening width, and the coil is inserted into the slot from the enlarged slot opening, and then the magnetic pole is inserted. An armature coil that sequentially mounts the coil on the armature core in the order of arrangement in the circumferential direction of the coil by repeating the coil mounting process of mounting the coil by reducing the slot opening width by moving the teeth in the adjacent direction. A method of manufacturing an armature for a rotating electrical machine having a mounting step.
PCT/JP2014/062978 2014-05-15 2014-05-15 Rotating electric machine armature iron core and armature manufacturing method WO2015173932A1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150054378A1 (en) * 2013-08-23 2015-02-26 Magna Electronics Inc. Interlocked stator yoke and star for electric motor
US20180076673A1 (en) * 2016-07-28 2018-03-15 Samsung Electronics Co., Ltd. Stator and motor having the same
WO2021124486A1 (en) * 2019-12-18 2021-06-24 三菱電機株式会社 Inner rotor-type electric motor, air blowing device, and manufacturing method for inner rotor-type electric motor

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020115709A (en) * 2019-01-17 2020-07-30 本田技研工業株式会社 Rotary electric machine
DE102020215259A1 (en) * 2020-12-03 2022-06-09 Mahle International Gmbh Coil assembly and its use in a valve

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004173440A (en) * 2002-11-21 2004-06-17 Fuji Heavy Ind Ltd Stator structure for rotating_electric machine
JP2004208358A (en) * 2002-12-24 2004-07-22 Mitsui High Tec Inc Layered stator core, apparatus and method for manufacturing stator for motor
JP2010075027A (en) * 2008-09-22 2010-04-02 Asmo Co Ltd Stator core and motor
JP2013066251A (en) * 2010-02-03 2013-04-11 Yaskawa Electric Corp Rotary electric machine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3765561B2 (en) * 2001-03-19 2006-04-12 株式会社三井ハイテック Manufacturing method of laminated iron core
JP4212982B2 (en) * 2003-08-07 2009-01-21 三菱電機株式会社 Rotating electric machine
JP2008306854A (en) * 2007-06-08 2008-12-18 Hitachi Ltd Stator of rotary electric machine and its manufacturing method
JP2010011692A (en) * 2008-06-30 2010-01-14 Seiko Epson Corp Stator structure, its manufacture and electric machine
JP5432643B2 (en) * 2008-09-17 2014-03-05 本田技研工業株式会社 Rotating electric machine stator and winding method thereof
JP5357187B2 (en) * 2009-01-14 2013-12-04 三菱電機株式会社 Manufacturing method of laminated core and manufacturing jig thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004173440A (en) * 2002-11-21 2004-06-17 Fuji Heavy Ind Ltd Stator structure for rotating_electric machine
JP2004208358A (en) * 2002-12-24 2004-07-22 Mitsui High Tec Inc Layered stator core, apparatus and method for manufacturing stator for motor
JP2010075027A (en) * 2008-09-22 2010-04-02 Asmo Co Ltd Stator core and motor
JP2013066251A (en) * 2010-02-03 2013-04-11 Yaskawa Electric Corp Rotary electric machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150054378A1 (en) * 2013-08-23 2015-02-26 Magna Electronics Inc. Interlocked stator yoke and star for electric motor
US20180076673A1 (en) * 2016-07-28 2018-03-15 Samsung Electronics Co., Ltd. Stator and motor having the same
US11063482B2 (en) * 2016-07-28 2021-07-13 Samsung Electronics Co., Ltd. Stator and motor having the same
WO2021124486A1 (en) * 2019-12-18 2021-06-24 三菱電機株式会社 Inner rotor-type electric motor, air blowing device, and manufacturing method for inner rotor-type electric motor

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