WO2022215295A1 - 固定子、回転電機、固定子の製造方法および回転電機の製造方法 - Google Patents

固定子、回転電機、固定子の製造方法および回転電機の製造方法 Download PDF

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Publication number
WO2022215295A1
WO2022215295A1 PCT/JP2021/042815 JP2021042815W WO2022215295A1 WO 2022215295 A1 WO2022215295 A1 WO 2022215295A1 JP 2021042815 W JP2021042815 W JP 2021042815W WO 2022215295 A1 WO2022215295 A1 WO 2022215295A1
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WO
WIPO (PCT)
Prior art keywords
magnetic pole
pole pieces
snap
stator
winding
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2021/042815
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English (en)
French (fr)
Japanese (ja)
Inventor
隆之 鬼橋
勇士 八木
遼 並河
太一 徳久
智也 糸瀬
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Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2023512815A priority Critical patent/JP7481583B2/ja
Priority to CN202180096397.7A priority patent/CN117063376A/zh
Publication of WO2022215295A1 publication Critical patent/WO2022215295A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H02K1/14—Stator cores with salient poles
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/32—Windings characterised by the shape, form or construction of the insulation
    • H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/52—Fastening salient pole windings or connections thereto

Definitions

  • the present application relates to a stator, a rotating electrical machine, a method for manufacturing a stator, and a method for manufacturing a rotating electrical machine.
  • a stator for a rotary electric machine in which magnetic pole pieces obtained by dividing a core into tooth units are connected to each other so as to be freely bendable in a direction perpendicular to the rotation output shaft direction (hereinafter simply referred to as the axial direction) via an insulator.
  • the axial direction perpendicular to the rotation output shaft direction
  • Patent Document 1 See, for example, Patent Document 1 below.
  • the adjacent magnetic pole pieces are prevented from interfering with each other by changing the angle of the connecting portion between the insulators so that the tooth portions are located on the outer diameter side. Since the conductive wire can be wound around the tooth portion without the wire being wound, the space factor of the winding can be improved.
  • Patent Document 1 it is necessary to prepare two types of insulators having different shapes in order to connect adjacent magnetic pole pieces using insulators. Therefore, there is a problem that the number of types of members increases and the process becomes complicated.
  • a mechanism is provided for inserting and extracting them in the axial direction.
  • the magnetic pole piece is arranged radially outward, it is necessary to prepare a holding mechanism or the like in order to prevent the magnetic pole piece from being axially displaced after coupling, which complicates the manufacturing process.
  • the crossover wire moves when the tooth portions of the magnetic pole pieces are arranged radially inward to form a ring. It is difficult to fix and arrange the connecting wire at a fixed position, and in some cases, a separate step of fixing and positioning the connecting wire at a fixed position is required.
  • the present application discloses a technique for solving the above-described problems, and provides a low-cost, high-performance stator, a rotating electrical machine, a stator manufacturing method, and a rotating machine without increasing the number of parts and manufacturing processes.
  • the object is to provide a method for manufacturing an electric machine.
  • the stator disclosed in the present application is A plurality of magnetic pole pieces each having a tooth portion projecting radially inwardly from an arc-shaped yoke portion are provided. and each of the magnetic pole pieces to which the insulator is attached is arranged in an annular shape with a conductive wire wound thereon,
  • One of the adjacent insulators attached to the magnetic pole pieces in the annular arrangement has a snap-fit female portion having an open ring portion formed with an opening opening in a direction orthogonal to the axial direction.
  • the other insulator is provided with a snap-fit male portion having a columnar portion axially extending from a base portion that bulges in the circumferential and radial directions, and the columnar portion fits into the open ring portion.
  • the magnetic pole pieces are oscillatably connected to each other by snap-fitting with each other, and at least one of the connecting portions that are snap-fitted and connected to each other is formed with a fixing portion for fixing the connecting portion.
  • the rotating electric machine disclosed in the present application includes the stator configured as described above and a rotor rotatably and coaxially arranged on the inner peripheral surface side of the stator.
  • the stator manufacturing method disclosed in the present application includes: an insulation assembly step of attaching the insulator to the magnetic pole piece; A winding step in which a conductor wire is intensively wound around one magnetic pole piece after the insulation assembly step, and a next magnetic pole piece to be wound after the winding step without cutting the conductor wire.
  • the manufacturing method of the rotating electrical machine disclosed in the present application includes a step of rotatably and coaxially arranging the rotor on the inner peripheral surface side of the stator after the above-described stator manufacturing steps.
  • the stator the rotating electrical machine, the manufacturing method of the stator, and the manufacturing method of the rotating electrical machine disclosed in the present application, it is possible to obtain an inexpensive, compact, high-performance product without increasing the number of parts. Further, according to the stator manufacturing method and the rotating electric machine manufacturing method disclosed in the present application, manufacturing can be performed without increasing the number of manufacturing processes, so manufacturing costs can be suppressed.
  • FIG. 1 is a schematic cross-sectional view showing a stator of a rotary electric machine according to Embodiment 1; 4 is a perspective view showing one magnetic pole piece that constitutes the stator according to Embodiment 1; FIG. 4 is a connection diagram showing a connection state of each magnetic pole piece of the stator according to Embodiment 1.
  • FIG. FIG. 4 is a wiring diagram schematically showing a wire connection state in which all magnetic pole pieces forming the stator according to Embodiment 1 are arranged in a straight line;
  • FIG. 4 is a perspective view of a state in which two insulators are attached to the magnetic pole pieces in the first embodiment, viewed from the radially inner side of the stator; FIG.
  • FIG. 4 is a front view of the state in which two insulators are attached to the magnetic pole pieces in the first embodiment, viewed from the radially outer side of the stator;
  • FIG. 4 is a perspective view of one insulator attached to the magnetic pole piece in Embodiment 1, viewed from the radially inner side;
  • Fig. 2 is a perspective view of the insulator viewed from the radially outer side in the first embodiment;
  • FIG. 4 is a plan view showing a state in which two adjacent magnetic pole pieces to which insulators are attached are snap-fitted and arranged in a straight line according to the first embodiment;
  • FIG. 10 is a perspective view showing a state in which the configuration shown in FIG. 9 is bent in a V shape;
  • FIG. 10 is a perspective view showing a state in which the configuration shown in FIG. 9 is bent in a V shape;
  • FIG. 10 is a view taken along the line AA in FIG. 9;
  • 1 is a schematic configuration diagram of an automatic winding machine used when manufacturing a stator for a rotary electric machine;
  • FIG. FIG. 4 is an explanatory diagram showing a state in which a conductive wire is continuously wound around four magnetic pole pieces corresponding to one phase (here, V phase) of three-phase alternating current according to Embodiment 1;
  • FIG. 4 is an explanatory diagram showing a state in which a conductive wire is continuously wound around four magnetic pole pieces corresponding to another one phase (here, U phase) of three-phase alternating current according to Embodiment 1; It is a figure which shows the state which welded the columnar part and open ring part of the insulator from the state shown in FIG.
  • FIG. 10 is a perspective view of one insulator attached to the magnetic pole piece as seen from the radially inner side in the second embodiment;
  • Fig. 10 is a perspective view of the insulator of the second embodiment as seen from the radially outer side;
  • FIG. 10 is a schematic side view of the snap-fit joint connecting portions of the magnetic pole pieces adjacent to each other to which the insulators of the second embodiment are mounted, viewed from the circumferential direction;
  • FIG. 10 is a perspective view of one insulator attached to the magnetic pole piece as seen from the radially inner side in the second embodiment;
  • Fig. 10 is a perspective view of the insulator of the second embodiment as
  • FIG. 21 is a view showing a state in which the snap-fit jointed connecting portion from the state shown in FIG. 20 is welded using a welding tool;
  • FIG. 4 is a schematic side view of a state in which snap-fit joints of adjacent magnetic pole pieces to which insulators are attached are fixed using screws, viewed from the circumferential direction;
  • 23A and 23B are plan views showing variations of insulators attached to adjacent pole pieces.
  • FIG. 2 is a schematic cross-sectional view of a rotating electric machine showing a modification of Embodiment 1;
  • FIG. FIG. 7 is a schematic cross-sectional view of a rotating electric machine showing another modification of the first embodiment;
  • FIG. FIG. 5 is a schematic side view showing an example of welding snap-fitted connecting portions of adjacent pole pieces;
  • FIG. 5 is a schematic side view showing another example of welding the snap-fit joints of adjacent pole pieces together;
  • Embodiment 1. 1 is a schematic cross-sectional view showing a stator of a rotating electric machine according to Embodiment 1
  • FIG. 2 is a perspective view showing one magnetic pole piece constituting the stator according to Embodiment 1
  • FIG. 3 is a stator according to Embodiment 1.
  • FIG. 4 is a wiring diagram schematically showing a wire connection state in which all the magnetic pole pieces forming the stator of Embodiment 1 are linearly arranged.
  • the magnetic pole pieces are shown in a simplified manner, and the conductors wound around the teeth and the insulators are omitted.
  • the stator 2 is for, as an example, a 10-pole, 12-teeth, three-phase DC brushless motor.
  • a plurality of (12 pieces in this example) magnetic pole pieces 10 each composed of a laminated iron core fixed by means of the magnetic pole pieces 10 are provided.
  • Each magnetic pole piece 10 has a back yoke portion 11 and tooth portions 12 protruding radially inward from the back yoke portion 11 .
  • Mounting grooves 13 for mounting the magnetic pole pieces 10 to a holding jig 52 of a rotation positioning mechanism 51 (to be described later) are formed on the radially outer peripheral surface side of the back yoke portion 11 when manufacturing the stator 2 .
  • Insulators 25 having the same shape are attached to each pole piece 10 from both ends in the axial direction. Details of the structure of the insulator 25 will be described later.
  • Two adjacent magnetic pole pieces 10 each having an insulator 25 mounted thereon are regarded as one set, and a conductive wire 20 made of a copper wire or the like is wound continuously around the two sets (total of four pieces) from above the insulator 25 . ing.
  • a total of four magnetic pole pieces 10, each of which is a set of two, correspond to one phase of each of the phases U, V, and W of the three-phase alternating current.
  • one set of two magnetic pole pieces 10 among the four magnetic pole pieces 10 around which the conductor wire 20 is wound is arranged so that each pair of magnetic pole pieces 10 is arranged in a point-symmetrical position opposite to each other with the center O of the circle interposed therebetween.
  • the magnetic pole pieces 10 are arranged in an annular shape so that each phase is alternately arranged along the circumferential direction. Circumferential butting ends of the back yoke portions 11 of the magnetic pole pieces 10 arranged annularly in this manner are connected to each other by the insulator 25 by a snap-fit connection, which will be described later.
  • each magnetic pole piece 10 corresponds to the respective phases of the three-phase alternating current, and N is the neutral point.
  • subscripts for each phase U, V, and W are shown to distinguish each conducting wire 20 wound around the tooth portion 12 of each adjacent two magnetic pole pieces 10, and the difference between U1 and U1' is indicates that the winding direction is left-right opposite.
  • U1 indicates counterclockwise rotation
  • U1' indicates clockwise rotation when viewed from the back yoke portion 11 side.
  • the difference between U1 and U2 is that U1 is the wire 20 wrapped around the first pair of pole pieces 10 and U2 is the second pair of pole pieces 10. It shows that it is a lead wire 20 that is wrapped around the eye.
  • the conducting wire 20 wound around the tooth portion 12 of each magnetic pole piece 10 is called a winding 21, and the conducting wire 20 that is routed between the magnetic pole pieces 10 without being cut is called a connecting wire 22.
  • the crossover wire connecting the pair of magnetic pole pieces 10 is indicated by reference numeral 22a. is denoted by reference numeral 22b.
  • the conductor wire 20 when the conductor wire 20 is wound continuously within the same phase, four magnetic pole pieces 10 are used as one unit for any of the U, V, and W phases.
  • the conductive wire 20 is continuously connected via a connecting wire 22a connecting a pair of magnetic pole pieces 10 adjacent to each other in the unit and a connecting wire 22b connecting each pair of magnetic pole pieces 10. can be wound, the number of connections of the winding ends can be reduced, and the manufacturing cost can be reduced.
  • FIG. 5 is a perspective view of a state in which two insulators are attached to one magnetic pole piece, viewed from the radially inner side of the stator.
  • FIG. 6 is a state in which two insulators are attached to one magnetic pole piece. It is the front view seen from the direction outside side.
  • 7 is a perspective view of the insulator attached to the magnetic pole piece viewed from the radially inner side
  • FIG. 8 is a perspective view of the insulator attached to the magnetic pole piece viewed from the radially outer side.
  • the insulator 25 is integrally molded, for example, from an insulating thermoplastic resin, and one type of insulator having the same shape is used for each individual magnetic pole piece 10 . If the insulator 25 is made of thermoplastic resin, even if it is manufactured by injection molding, it can be welded to each magnetic pole piece 10 by applying heat afterward.
  • the insulator 25 has a tooth fitting portion 27 fitted to the tooth portion 12 of each magnetic pole piece 10 and a back yoke fitting portion 32 fitted to the back yoke portion 11 .
  • the tooth fitting portion 27 includes a dome-shaped winding portion 28 that covers the axial half of the circumferential side surface of the tooth portion 12 of the magnetic pole piece 10 and extends circumferentially from the radially inner end of the winding portion 28 . and winding dams 29 projecting in the axial direction.
  • the back yoke fitting portions 32 are formed on the left and right sides in the circumferential direction with the inner peripheral surface cover portions 33 covering the inner peripheral surface of the back yoke portion 11 sandwiching the winding portion 28 .
  • a quadrangular prism-shaped protruding portion 34 protruding in the circumferential and radial directions is formed.
  • An intermediate protrusion 35 is provided between the two protrusions 34 so as to protrude in the axial direction.
  • winding relief grooves 36 are formed respectively.
  • the winding relief groove 36 is provided to release the winding start portion and the winding end portion of the conductor wire 20 radially outward in order to prevent the winding start portion and the winding end portion of the conductor wire 20 from interfering with the winding. belongs to.
  • a substantially C-shaped open ring portion 37a is integrally formed from one protruding portion 34 (on the right side in FIGS. 5 and 7), protruding outward in the circumferential direction and radial direction.
  • the open ring portion 37a is provided with an opening 37b that opens in a direction orthogonal to the axial direction, and a notch 37c is provided on the side facing the opening 37b.
  • a snap-fit female portion 37 is constituted by the ring-opening portion 37a in which the notch 37c and the opening 37b are formed.
  • the ring-opening portion 37a has a gap corresponding to the axial thickness D of the base portion 38a, which will be described later, between the axial ends of the pole pieces 10 in the axial direction. are provided.
  • a base portion 38a is formed integrally with the projection portion 34 on the other side (the left side in FIGS. 5 and 7) and protrudes outward in the circumferential and radial directions.
  • a cylindrical columnar portion 38b is formed.
  • the axial direction of the base portion 38a of the snap-fit male portion 38 is adjusted so that the columnar portion 38b is fitted through the opening portion 37b inside the open ring portion 37a.
  • the thickness D of is set so as to correspond to the axial clearance of the ring-opening portion 37a of the snap-fit female portion 37, as described above.
  • the axial length of the columnar portion 38b is set longer than the axial thickness of the ring-opening portion 37a.
  • a snap-fit male portion 38 is composed of the base portion 38a and the columnar portion 38b.
  • the outer diameter of the columnar portion 38b is preferably set to be equal to or greater than the inner diameter of the open ring portion 37a in a free state where no external force is applied to the open ring portion 37a of the snap-fit female portion 37. This is to prevent the columnar portion 38b from being easily detached from the ring-opening portion 37a when the columnar portion 38b is fitted into the ring-opening portion 37a and connected.
  • the opening 37b provided in the ring-opening portion 37a of the snap-fit female portion 37 is set so that the slit width is equal to or less than the diameter of the columnar portion 38b in a free state where no external force is applied. . This is also to prevent the columnar portion 38b from easily coming off from the ring-opening portion 37a when the columnar portion 38b is fitted into the ring-opening portion 37a and connected.
  • the open ring portion 37a is provided with a notch 37c on the side facing the opening portion 37b.
  • a notch 37c By providing such a notch 37c, the force for widening the opening 37b can be reduced, the columnar portion 38b can be smoothly fitted into the open ring portion 37a, and the inner peripheral surface side of the open ring portion 37a can be shifted from the outer peripheral surface side. It is possible to prevent breakage of the ring-opening portion 37a even when a force directed toward is suddenly applied.
  • the insulators 25 are arranged adjacent to each other as described later, and the columnar portion 38b of the snap-fit male portion 38 is connected to the open ring portion 37a of the snap-fit female portion 37.
  • a connecting portion is formed by a strong snap-fit connection, and the columnar portion 38b is rotatably held within the open ring portion 37a.
  • the inner peripheral surface of the ring-opening portion 37a does not necessarily have to be an arc as long as the columnar portion 38b can rotate.
  • the columnar portion 38b does not need to be a cylinder as long as the necessary rotation range can be secured.
  • the shape and the like can be changed as appropriate.
  • insulation assembly operation the operation of attaching the insulator 25 to one magnetic pole piece 10 (hereinafter referred to as insulation assembly operation) will be described.
  • insulators 25 shown in FIGS. 7 and 8 are attached to one magnetic pole piece 10 from both ends in the axial direction.
  • the snap-fit female portion 37 and the snap-fit male portion 38 are arranged so as to face opposite positions in the circumferential direction.
  • the circumferential surface of the tooth portion 12 of the pole piece 10 is covered with the winding portion 28 of the insulator 25, which is an insulating material.
  • the two insulators 25 mounted from both ends in the axial direction of the pole piece 10 have the same shape, and the insulators 25 inserted from the front and back in the axial direction are mutually different in shape. As compared with the case of making them different, the types of resin molding dies can be suppressed, making it possible to provide inexpensive products.
  • the pair of insulators 25 are attached separately to the magnetic pole piece 10, but instead, the magnetic pole piece 10 can be placed in a molding machine and directly covered with resin to integrally mold the insulator 25. It is possible.
  • FIG. 9 is a plan view showing a state in which two adjacent magnetic pole pieces with insulators attached are connected by a snap fit and arranged in a straight line
  • FIG. 10 is a state in which the configuration shown in FIG. 9 is bent into a V shape.
  • FIG. 11 is a view taken along line A--A in FIG.
  • the back yoke portions 11 of the pair of magnetic pole pieces 10 to which the insulators 25 are attached are arranged in parallel so that they are adjacent to each other. Then, between the magnetic pole pieces 10 adjacent to each other, the columnar portions 38b of the snap-fit male portions 38 are inserted into the openings 37b provided in the ring-opening portions 37a of the snap-fit female portions 37 at both ends along the axial direction. will face each other.
  • the columnar portion 38b is pushed into the open ring portion 37a.
  • the pair of adjacent magnetic pole pieces 10 to which the insulators 25 are attached are simultaneously snap-fit coupled at both ends in the axial direction, and as a result, the adjacent magnetic pole pieces 10 can rotate about the coupling portion.
  • the connection between the columnar portion 38b and the ring-opening portion 37a can be manually assembled, but may be fitted using a jig or the like.
  • the open ring portion 37a of the snap-fit female portion 37 is located between the ends of the pole pieces 10 in the axial direction, as described above. , a gap corresponding to the thickness D of the base portion 38a of the snap-fit male portion 38 is provided.
  • the axial length of the columnar portion 38b is set longer than the axial thickness of the open ring portion 37a, as shown in FIG. It will be in the state which only fixed length L protruded in the axial direction from the part 37a. This is to ensure in advance a material for welding the protruding portion of the columnar portion 38b and fixing it to the ring-opening portion 37a in a welding operation or a partial welding operation, which will be described later.
  • the axially opposite side is also snap-fitted in a similar manner.
  • FIG. 12 is a schematic configuration diagram of an automatic winding machine used to form the stator of the rotary electric machine having the above configuration.
  • This automatic winding machine 50 comprises a rotary positioning mechanism 51 for positioning each pole piece 10 and a flyer 54 for supply winding of the wire 20 .
  • the magnetic pole piece 10 with the insulator 25 mounted thereon is simply referred to as the magnetic pole piece 10 for convenience of explanation.
  • the rotation positioning mechanism 51 has a disk-shaped holding jig 52 that fixes each magnetic pole piece 10 .
  • the holding jig 52 is provided with a plurality of mounting pins (not shown) which are inserted into the mounting grooves 13 formed in the respective magnetic pole pieces 10 along the circumferential direction thereof, and a winding for fixing the winding start portion of the conductor 20 .
  • a starting line fixing pin 53 is provided.
  • the holding jig 52 is rotatable around its center O1.
  • the flyer 54 is for winding the conductor wire 20 around the tooth portion 12 of each magnetic pole piece 10 while supplying the conductor wire 20, and the arm portion 54b attached to the axial end of the pivot shaft 54a is positioned at the center of the pivot shaft 54a. As indicated by the arrow ⁇ , it can be rotated in forward and reverse directions around O2, and the rotation shaft 54a is slid in the axial direction (Z direction) in synchronization with the rotation for performing alignment winding. It is configured.
  • the conductive wire 20 to be supplied is connected from the base end side of the arm portion 54b of the flyer 54 to the tip portion through the inside of the arm portion 54b.
  • FIG. 13 is an explanatory diagram showing a state in which the conductor 20 is continuously wound around four magnetic pole pieces 10 corresponding to one phase (here, V phase) of a three-phase alternating current
  • FIG. 14 shows the remainder of the three-phase alternating current
  • 2 is an explanatory view showing a state in which a conductor 20 is continuously wound around each of four magnetic pole pieces 10 corresponding to two phases (U phase as an example here) of , and the conductor 20 wound around each tooth portion 12 part is omitted.
  • a 10-pole 12-teeth stator can be constructed by setting FIG. 13 to U phase and W phase, and FIG. 14 to V phase.
  • winding work the work of routing the conductor 20 to the next magnetic pole piece without cutting the end of the winding
  • crossover work repetitive work including winding work and crossover work is referred to as wiring work here.
  • the magnetic pole pieces 10 are individually denoted by reference numerals 10a, 10b, 10c, and 10d so that the magnetic pole pieces 10 can be distinguished from each other.
  • a set of two magnetic pole pieces 10a and 10b and a set of two magnetic pole pieces 10c and 10d are arranged so as to be substantially point-symmetrical with respect to each other with the center O1 of the holding jig 52 interposed therebetween.
  • the magnetic pole pieces 10a and 10b and the magnetic pole pieces 10c and 10d adjacent to each other are connected to each other by the snap-fit connection of the insulator 25 as described above.
  • each pair of adjacent magnetic pole pieces 10 a and 10 b and each pair of magnetic pole pieces 10 c and 10 d are held so that each tooth portion 12 is positioned outside the disk-shaped holding jig 52 .
  • a mounting pin (not shown) of the jig 52 is inserted into the mounting groove 13 formed in the back yoke portion 11 and fixed.
  • a set of two magnetic pole pieces 10a and 10b and a set of two magnetic pole pieces 10c and 10d adjacent to each other are arranged to form a V shape in which the distance along the circumferential direction between the tooth portions 12 is widened. be done.
  • the holding jig 52 is rotated to first move one magnetic pole piece 10a to a position facing the pivot shaft 54a of the flyer 54 .
  • the conductor wire 20 is wound around the insulator 25.
  • the flyer 54 is turned (here, turned clockwise when viewed from the back yoke portion 11 side), and in synchronization with this, the turning shaft is slid along the axial direction (Z direction).
  • the conductor wire 20 is wound around the tooth portion 12 of the magnetic pole piece 10a (hereinafter referred to as winding operation 1).
  • the other magnetic pole piece 10b, to which the wire 20 is not wound, and the other pair of magnetic pole pieces 10c, 10d are always flyers.
  • the winding work is performed by setting the arrangement positions of the respective magnetic pole pieces so that they are positioned outside the rotation plane Q of the turning tip of 54 (indicated by symbols P2, P3, and P4 in FIG. 12). In this way, when the conductor wire 20 is wound around one magnetic pole piece 10a, the flyer 54 can be reliably prevented from interfering with other magnetic pole pieces 10b, 10c, and 10d.
  • the holding jig 52 is rotated to move the other magnetic pole piece 10b to a position facing the pivot shaft 54a of the flyer 54.
  • the end of the winding of the conductor 20 wound around the previous magnetic pole piece 10a is not cut off and is used as a crossover wire 22a. along the winding relief groove 36 of the magnetic pole piece 10b (hereinafter, this is referred to as a crossover work 1).
  • the conductive wire 20 is wound around the tooth portion 12 of the magnetic pole piece 10b in a direction opposite to the winding direction of the previous magnetic pole piece 10a (in this example, counterclockwise when viewed from the back yoke portion 11 side) (hereinafter referred to as This is called winding operation 2).
  • winding operation 2 the magnetic pole pieces 10a, 10c, and 10d other than the magnetic pole piece 10b to which the wire 20 is to be wound are always positioned outside the plane of rotation Q of the tip of the flyer 54.
  • the holding jig 52 is rotated to move the magnetic pole piece 10c to a position facing the pivot shaft 54a of the flyer 54.
  • a predetermined length of wire just reaching the magnetic pole piece 10c to be the next winding work target is provided.
  • the conductor wire 20 is laid along the winding escape groove 36 for the magnetic pole piece 10c to be wound (hereinafter referred to as crossover work 2). .
  • the conducting wire 20 is wound in the same direction as the magnetic pole piece 10b (counterclockwise when viewed from the back yoke portion 11 side) (hereinafter referred to as winding operation 3).
  • winding operation 3 all of the magnetic pole pieces 10d, 10a, and 10b other than the magnetic pole piece 10c to which the wire 20 is to be wound are always positioned outside the plane of rotation Q of the turning end of the flyer 54.
  • the winding operation reliably prevents the flyer 54 from interfering with the other pole pieces 10d, 10a, 10b.
  • the holding jig 52 is rotated to move the magnetic pole piece 10d to a position facing the pivot shaft 54a of the flyer 54.
  • the holding jig 52 is rotated to move the magnetic pole piece 10d to a position facing the pivot shaft 54a of the flyer 54.
  • it is used as a crossover wire 22a, passed through the winding relief groove of the insulator 25, and then subjected to the next winding operation. It is made to run along the winding escape groove 36 of the pole piece 10d (hereinafter, this is referred to as the crossover work 3).
  • the conductive wire 20 is wound around the tooth portion 12 of the magnetic pole piece 10d in a direction opposite to the direction in which the previous magnetic pole piece 10c was wound (in this example, left and right when viewed from the back yoke portion 11 side) (hereinafter referred to as This is called winding operation 4).
  • the magnetic pole pieces 10c, 10a, and 10b other than the magnetic pole piece 10d to which the wire 20 is to be wound are always positioned outside the plane of rotation Q of the tip of the flyer 54.
  • the winding operation ensures that the flyer 54 does not interfere with the other pole pieces 10c, 10a, 10b.
  • the conductor 20 is wound continuously through the connecting wire 22 in at least two of the four magnetic pole pieces 10a, 10b, 10c, and 10d.
  • the conductive wire 20 is continuously wound through the connecting wire 22 on all of the magnetic pole pieces 10a, 10b, 10c, and 10d of each phase, in order to reduce the man-hours and the number of parts.
  • the wiring work and the partial ringing work are similarly performed for the four magnetic pole pieces 10 corresponding to the U phase and the W phase, respectively, and the four magnetic pole pieces 10 for each phase are connected.
  • a set of two magnetic pole pieces 10 arranged adjacent to each other are arranged alternately in the circumferential direction to form an annular ring, as shown in FIG.
  • the adjacent end surfaces of the magnetic pole pieces 10 are integrally connected by snap-fit coupling using insulators 25 (hereinafter, this is referred to as ringing operation).
  • connection processing is performed so that the connection state shown in FIGS. 3 and 4 is achieved.
  • the outer periphery of the magnetic pole pieces 10 arranged in an annular shape is molded with a resin 5 or the like to obtain the desired stator 2 for a three-phase DC brushless motor with 10 poles and 12 teeth.
  • the connecting wire 22b connecting each pair of the pair of magnetic pole pieces 10 adjacent to each other is along the outer periphery of the stator 2.
  • the connecting wire 22b is routed as long as it is possible to avoid interference with each magnetic pole piece 10 when connecting all the magnetic pole pieces 10 in an annular shape.
  • it can be located radially inwardly of each pole piece 10 arranged in an annular shape, or it can be located radially outwardly.
  • This welding part 40 melts a part of the columnar part 38b, so it becomes unnecessary to use another material (adhesive, screws, etc.). Further, the welded portion 40 bulges in the circumferential and radial directions to cover the axial end surface of the ring-opening portion 37a. Therefore, even if a load due to vibration or the like is applied to the connecting portions that are connected to each other by snap-fit coupling, the connecting portions are less likely to break and can be reliably fixed.
  • the welded parts are all snap-fitted connecting parts, but are not limited to this. As long as it is easy to handle in the circularization work, it is sufficient that there are not 24 points on both end faces in the axial direction, but 12 points on one end face, or 6 points, which is less than that. good.
  • the welding work is performed after the ring-shaped work for all the magnetic pole pieces 10 is completed, but the present invention is not limited to this. That is, after the wiring work to a set of two magnetic pole pieces is finished, the partial annular work of arranging the magnetic pole pieces 10a, 10b and 10c, 10d adjacent to each other so that the tooth portions 12 face the inner diameter is finished. It is also possible to perform welding at this point (hereinafter referred to as partial welding operation).
  • the magnetic pole pieces 10 are arranged alternately for each phase and arranged in an annular shape. Adjacent pole pieces 10a, 10b and 10c, 10d do not move during handling to perform an annular ringing operation that connects them together. That is, even if one of the pair of magnetic pole pieces 10a and 10b is gripped and moved during handling, the relative positions of the magnetic pole pieces 10a and 10b are fixed and will not be displaced. Therefore, handling of the device or jig can be facilitated.
  • the automatic winding machine 50 As explained above, by applying the automatic winding machine 50 as shown in FIG. You can move it to the desired position. After the magnetic pole piece 10 has moved to the predetermined position, the conductor wire 20 can be wound by rotating the flyer 54 while the position of the magnetic pole piece 10 remains fixed. In other words, since the rotation positioning mechanism 51 and the flyer 54 are separate and independent, the movement of the magnetic pole piece 10 to the supply side of the conductor 20 and the winding of the conductor 20 can be performed simultaneously by one mechanism. is simplified, failures are less likely to occur, and the device can be manufactured at low cost.
  • the magnetic pole piece 10 since the conductor 20 is wound by rotating the flyer 54, the magnetic pole piece 10 itself does not rotate at high speed, so vibration or deflection occurs during the winding of the conductor 20, resulting in good alignment of the wound conductor 20. Therefore, the working time is shortened and the production amount per unit time can be increased.
  • the magnetic pole pieces 10 are arranged in a V-shape as compared to the case where the number of the magnetic pole pieces 10 fixed to the holding jig 52 is large. Since each magnetic pole piece 10 can be opposed to the flyer 54 simply by rotating the rotation positioning mechanism 51 after attaching it at a desired interval, the angle between the adjacent magnetic pole pieces 10 becomes narrower and the conductor wire 20 is less likely to be wound. It is possible to eliminate troubles such as being an obstacle and not being able to freely set the length of the crossover 22a.
  • stator 2 In constructing the stator 2, it is often the case that a set of two magnetic pole pieces 10 are alternately arranged along the circumferential direction to form an annular ring. Although the distance of the crossover wire 22b connecting each pair of the magnetic pole pieces 10 becomes long, the magnetic pole pieces 10 can be positioned at the positions where the winding work is performed in sequence simply by rotating the rotation positioning mechanism 51. The length of the line 22b can be freely set.
  • the windings 21 when the windings 21 are applied, interference between the adjacent magnetic pole piece 10 and the flyer 54 can be avoided, and the alignment of the windings 21 can be improved. Moreover, since the crossover wires 22b can be provided even for the magnetic pole pieces 10 existing at discrete positions, the productivity can be improved.
  • FIG. 16 is a flow chart showing an example of a method for manufacturing the stator in the rotary electric machine of the first embodiment.
  • the insulation assembly work described above is performed, and the insulators 25 are attached to the respective magnetic pole pieces 10.
  • the magnetic pole piece 10 instead of attaching the pair of insulators 25 to the magnetic pole piece 10, the magnetic pole piece 10 can be placed in a molding machine and directly covered with resin for integral molding.
  • step S10 When the insulation assembly process of step S10 is finished, next, a pair of mutually adjacent magnetic pole pieces 10 with insulators 25 mounted thereon are snap-fitted and connected, and the two connected magnetic pole pieces 10 are made into one set, The two sets (four in total) are set as one of the U-phase, V-phase, and W-phase.
  • the process shifts to a wiring process in which the above-described wiring work (winding work of the conducting wire 20 and crossover work) is performed for each of the four magnetic pole pieces 10 corresponding to one phase.
  • step S11 the above-described winding work 1 is carried out, in which the conductive wire is intensively wound around one magnetic pole piece 10a via the insulator 25.
  • the crossover process 1 of step S12 the above-described crossover work 1 of forming a crossover without cutting the conductive wire continuously to the next magnetic pole piece 10b to be wound is performed.
  • the above-described winding operation 2 of intensively winding the conductive wire around one magnetic pole piece 10b through the insulator 25 is performed.
  • step S14 in the crossover process 2, the above-described crossover work 2 is performed to form a crossover wire without cutting the conductive wire continuously to the separated magnetic pole piece 10c to be wound.
  • step 3 of step S15 the above-described winding operation 3 of intensively winding the conductive wire around one magnetic pole piece 10c through the insulator 25 is performed.
  • step S16 the above-described crossover work 3 of forming a crossover without cutting the conductor 20 continuously to the next magnetic pole piece 10d to be wound is performed.
  • step 4 of step S17 the above-described winding operation 4 of intensively winding the conducting wire 20 around one magnetic pole piece 10d via the insulator 25 is performed.
  • step S18 for each of the four magnetic pole pieces 10 corresponding to each phase, the respective tooth portions 12 of the four magnetic pole pieces 10 are restored from the reversely warped V-shaped state to form an arc shape as described above. carry out conversion work.
  • step S19 the above-described partial welding operation of welding snap-fitted connection portions at least one or more places is performed for two sets (four pieces in total) of the magnetic pole pieces 10 corresponding to each phase.
  • the connecting portion where the pair of magnetic pole pieces 10a and 10b adjacent to each other are snap-fitted, two axial end surfaces are welded, or the pair of magnetic pole pieces 10c and 10d adjacent to each other are snap-fitted.
  • One of the axial end faces of the connecting portion is welded at one point.
  • the magnetic pole pieces 10a can be connected to each other.
  • 10b can be fixed, which facilitates handling.
  • the degree of freedom between the magnetic pole pieces 10 is reduced.
  • the magnetic pole piece 10 of each phase is welded, if there is no partial welding process, there are 12 points where the connecting portion that is snap-fitted moves. If they are alternately arranged in an annular shape, the overall rigidity may be weak, and it may be difficult to maintain the annular shape.
  • the adjacent pole pieces 10 of each phase are welded together, there are six movable parts during the ringing operation. Therefore, stronger fixation is possible.
  • step S19 when the partial welding process of step S19 is completed for the magnetic pole pieces 10 of all phases, the process proceeds to the next step S20 of circularizing process.
  • step S20 of forming an annular ring as shown in FIG. 1, all the magnetic pole pieces 10 are alternately arranged along the circumferential direction to form an annular ring.
  • the above-mentioned ringing operation of integrally connecting them by snap-fitting using the insulator 25 is performed.
  • step S21 the above-described welding operation of welding the remaining snap-fit jointed connecting portions that have not been welded in the partial welding process of step S19 is carried out.
  • the movement of each magnetic pole piece 10 can be suppressed, and the annular shape of the stator 2 can be easily maintained. Therefore, the magnetic pole pieces 10 do not come apart during handling until the subsequent molding step of molding with resin, and the shape is maintained when the magnetic pole piece 10 is put into the molding die, so that the insertability is improved. It is also possible to perform only the welding process without performing the partial welding process. In this case, since the welding process can be integrated into one process, productivity can be improved.
  • step S22 the entire stator 2 including the magnetic pole piece 10, the conductor wire 20, the open ring portion 37a of the insulator 25, the columnar portion 38b, etc., which are arranged in an annular shape, is molded with the resin 5. to implement.
  • the resin 5. to implement.
  • the connecting portion of the insulator 25 that protrudes to the outer diameter side of the pole piece 10 and is snap-fitted interferes.
  • the resin 5 can cover the conductive wire 20 which is a heat generating source, so that the heat dissipation can be improved, which in turn contributes to miniaturization of the rotary electric machine 1 using the stator 2 .
  • the rotor is rotatably and coaxially arranged on the inner diameter side of the stator 2 to obtain the desired rotating electric machine with low cost, small size, and high performance. .
  • FIG. 17A is a schematic cross-sectional view of the rotating electric machine thus obtained, and FIG. 17B is an enlarged view of part A1 in FIG. 17A.
  • a rotor 3 is rotatably coaxially arranged on the inner diameter side of a stator 2 having the configuration shown in FIG.
  • the rotor 3 is composed of a rotation output shaft 4, a rotor core 6 inserted into the rotation output shaft 4, and permanent magnets 7 arranged on the outer periphery thereof.
  • the permanent magnets 7 have ten poles. It is configured so as to be magnetized.
  • the permanent magnet 7 is ring-shaped here, it is not limited to such a configuration, and for example, a magnet divided into a plurality of pieces may be used.
  • the rotor 3 is configured as a surface-attached magnet structure (SPM; Surface Permanent Magnet), it is not limited to this. good too.
  • the entire stator 2 including the conducting wire 20 , the open ring portion 37 a of the insulator 25 , the columnar portion 38 b and the like is molded with the resin 5 . That is, the resin 5 molded on the stator 2 has an inner peripheral surface 5a formed up to the position of the inner peripheral contour extending in the circumferential direction from the inner peripheral surface of the magnetic pole piece 10, and an outer peripheral surface 5b extending from the inner peripheral surface of the magnetic pole piece 10.
  • the opening 37a and the columnar portion 38b of the insulator 25, which protrude radially outward, are also formed at a position to cover all of them.
  • each magnetic pole piece 10 can be easily fixed even if the columnar portion 38b serving as the rotation center of the insulator 25 is arranged on the outer diameter side of the magnetic pole piece 10 .
  • the connecting portion of the insulator 25 protruding to the outer diameter side of the pole piece 10 by snap-fitting interferes. This can be avoided by molding with the resin 5 as in the first embodiment, and the divided magnetic pole pieces 10 are fixed in an annular shape. Also, even if oil or the like adheres to the outer surface of the stator 2, damage to the conductors 20 and the pole pieces 10 can be suppressed.
  • the stator 2 of the rotary electric machine 1 for a three-phase DC brushless motor with 10 poles and 12 teeth is configured.
  • the magnetic pole pieces 10 are continuously wound, the magnetic pole pieces 10 are not limited to this, and can be applied to three or more magnetic pole pieces 10 adjacent to each other.
  • insulators 25 having the same shape are used and attached to the respective magnetic pole pieces 10, and the respective magnetic pole pieces 10 are connected by snap-fitting using the insulators 25. It is configured to form a connecting portion that is swingable and restricts displacement in the axial direction. Then, after the magnetic pole pieces 10 are formed into a ring, a structure and a manufacturing method are adopted in which the magnetic pole pieces are fixed together by welding the connecting portions that are snap-fitted together. Therefore, it is possible to obtain the rotary electric machine 1 having the high-performance stator 2 without increasing the number of parts used. In addition, since the manufacturing process can be performed without increasing the number of manufacturing steps, the manufacturing cost can be suppressed and the manufacturing work can be easily performed.
  • Embodiment 2 is a perspective view of one insulator attached to a magnetic pole piece viewed from the inside in the radial direction in the second embodiment, and FIG. 19 is a perspective view of the insulator of the second embodiment seen from the outside in the radial direction.
  • 20 is a schematic side view of the connecting portion of the magnetic pole pieces that are snap-fitted to each other and are fitted with the insulators of the second embodiment, viewed from the circumferential direction. 7, 8, and 11 of Embodiment 1 are denoted by the same reference numerals.
  • a feature of the second embodiment is that a slit 38f is provided by notching the axial end of the columnar portion 38b of the insulator 25 .
  • a chamfer 38h is formed on the axial end face of the slit 38f.
  • Other components are the same as those of the first embodiment.
  • FIG. 21 is a diagram showing a state in which the snap-fit jointed connecting portion from the state shown in FIG. 20 is welded using a welding tool.
  • the welding tool 60 has a cylindrical tubular portion 60a and a pressing portion 60b provided concentrically inside the tubular portion 60a.
  • the inner diameter of the cylindrical portion 60a is set slightly larger than the outer diameter of the open ring portion 37a.
  • the pressing portion 60b is arranged axially withdrawn from the open end of the cylindrical portion 60a by a certain distance, and is provided with a slit fitting projection 60c that is fitted into the slit 38f at the center of the end face.
  • the welding tool 60 When welding snap-fit joints of the magnetic pole pieces 10 adjacent to each other, the welding tool 60 is axially pressed against the tubular portion 60a and heated. At this time, since the cylindrical portion 60a is chamfered 38h in advance, the slit fitting protrusion 60c is easily fitted into the slit 38f without being displaced. Then, when the welding tool 60 is pressed against the tubular portion 60a and heated, the tip of the columnar portion 38b melts and changes its shape to form the welded portion 40. As shown in FIG.
  • the welded portion 40 formed in this case not only covers the axial end face of the ring-opening portion 37a, but also partially covers the outer peripheral surface of the ring-opening portion 37a. For this reason, the snap-fitted joints are firmly welded. In this way, the connecting portion that has been snap-fitted can be firmly fixed by a single operation of pressing the welding tool 60 against the cylindrical portion 60a and heating it. work can be done.
  • the connecting portions that are snap-fitted are welded to form welded portions 40 for fixation.
  • Such welding is desirable because it eliminates the need to use other materials, but it is not limited to forming a fixing portion by fixing snap-fitted connecting portions.
  • the axial length of the columnar portion 38b is set slightly shorter than the axial thickness of the ring-opening portion 37a, and the columnar portion 38b is fixed by screwing a screw 62, for example. good too.
  • the connecting portion can be fixed by such means.
  • the open ring portion 37a may be melted and welded. By doing so, even if an external force is applied to move the magnetic pole pieces 10 away from each other, this can be suppressed by closing the open ring portion 37a.
  • the insulators 25 attached to the individual magnetic pole pieces 10 are all of the same shape and of only one type. That is, the insulator 25 has a configuration in which a snap-fit female portion 37 having an open ring portion 37a on one circumferential end side and a snap-fit male portion 38 having a columnar portion 38b on the other circumferential end side are formed.
  • the present application is not limited to such a configuration.
  • FIGS. 23A and 23B it is possible to use two types of insulators having symmetrical shapes with respect to the circumferential center of the tooth portion 12 of the pole piece 10 as a boundary. That is, as shown in FIG. 23A, one insulator 25a is formed with snap-fit female portions 37 having open ring portions 37a at both ends in the circumferential direction. 23B, the other insulator 25b is formed with snap-fit male portions 38 having columnar portions 38b at both ends in the circumferential direction.
  • the two types of insulators 25a and 25b are attached to the magnetic pole pieces 10 adjacent to each other, and snap-fit coupling is achieved by fitting the columnar portion 38b into the open ring portion 37a, and the magnetic pole pieces 10 are rotatably connected.
  • the other insulator 25b is provided with a hole 39 that is not present in the one insulator 25a.
  • This hole 39 is connected to a terminal for connecting the end of the conductor 20 to supply power.
  • Embodiment 1 ( FIG. 17 ), the entire stator 2 including the conducting wire 20 , the open ring portion 37 a of the insulator 25 , the columnar portion 38 b and the like is molded with the resin 5 .
  • the resin 5 molded on the stator 2 is formed so that the inner peripheral surface 5a thereof reaches the position of the inner diameter contour extending in the circumferential direction from the inner peripheral surface of the pole piece 10.
  • the position of the outer peripheral surface 5b is the position of the outer diameter contour extending in the circumferential direction from the outer peripheral surface of the pole piece 10. formed inside the Therefore, in this configuration, the open ring portion 37 a and the columnar portion 38 b of the insulator 25 are not molded with the resin 5 .
  • the divided magnetic pole pieces 10 are formed into an annular shape. While maintaining the fixed state, it is possible to reduce the amount of the resin 5 used for molding, thereby reducing the weight and material cost.
  • the position of the outer peripheral surface 5b (indicated by the dashed line in the figure) of the resin 5 to be molded is the position of the outer diameter contour obtained by extending the outer peripheral surface of the pole piece 10 in the circumferential direction. It is formed slightly inside the However, unlike the above modification (FIG. 24), the ring-opening portion 37a and the columnar portion 38b of the insulator 25 projecting further radially outward than the pole pieces 10 are locally molded with the resin 5c. there is A connecting wire (not shown) is also molded in this way.
  • the outer peripheral surface 5b (indicated by the broken line in the drawing) is ) is formed slightly inside the position of the outer diameter contour extending in the circumferential direction of the outer peripheral surface of the magnetic pole piece 10, so molding is performed as compared with the case of the first embodiment (FIG. 17). It is possible to reduce the amount of resin 5 used, thereby reducing weight and material costs.
  • a slit 38f is provided in a part of the columnar portion 38b of the insulator 25, and the axial ends of the columnar portion 38b are welded, so that the magnetic pole pieces 10 are snap-fitted to each other.
  • the connecting portions that are connected to each other are further strongly connected.
  • the crossover wire 22 is arranged in a slit 38f provided in a part of the columnar portion 38b, and the axial end portion of the columnar portion 38b is welded in this state. Furthermore, a portion of the radially outer peripheral side of the base portion 38a of the snap-fit male portion 38 of the insulator 25 is cut away to form a groove portion 38g having a U-shaped cross section at two upper and lower positions along the axial direction. is deformed by bending, winding, etc. so as to pass through the groove 38g.
  • the crossover wire 22 that passes through the welded portion of the columnar portion 38b is a crossover wire that corresponds to a certain phase (for example, the V phase) and is routed between the magnetic pole pieces 10 that are arranged adjacent to each other.
  • the crossover wire arranged in the groove portion 38g is a crossover wire of another phase (for example, U phase, W phase) different from this.
  • the connecting wire 22 can be prevented from moving.
  • the connecting wires 22 of other phases it is possible to avoid unexpected contact between the connecting wires 22 of different phases having a large potential difference.
  • the crossover wire 22 is fixed by welding (33h) that portion.
  • the connecting wires 22 arranged in the columnar portion 38b and the grooves 38g are of different phases.
  • each connecting wire 22 is arranged in each groove portion 38g after the ringing process, the portion is welded (33h) to fix the connecting wire 22, so that each connecting wire 22 can be regulated, and unexpected contact between different-phase crossover wires 22 having a large potential difference can be reliably avoided.
  • 1 rotating electrical machine 2 stator, 3 rotor, 5 resin, 10, 10a, 10b, 10c, 10d magnetic pole piece, 11 back yoke portion, 12 tooth portion, 20 conducting wire, 21 winding, 22, 22a, 22b connecting wire , 25, 25a, 25b insulator, 37 snap-fit female part, 37a ring-opening part, 37b opening part, 38 snap-fit male part, 38a base part, 38b columnar part, 38f slit, 40 welding part, 50 automatic winding machine, 51 Rotation positioning mechanism, 54 flyer.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
PCT/JP2021/042815 2021-04-05 2021-11-22 固定子、回転電機、固定子の製造方法および回転電機の製造方法 Ceased WO2022215295A1 (ja)

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CN202180096397.7A CN117063376A (zh) 2021-04-05 2021-11-22 定子、旋转电机、定子的制造方法以及旋转电机的制造方法

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007531484A (ja) * 2004-03-23 2007-11-01 エマーソン エレクトリック カンパニー セグメント化された固定子用端部キャップ
JP2012075213A (ja) * 2010-09-28 2012-04-12 Nidec Sankyo Corp ステータ
WO2021033496A1 (ja) * 2019-08-20 2021-02-25 三菱電機株式会社 ステータと回転電機、およびそれらの製造方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007531484A (ja) * 2004-03-23 2007-11-01 エマーソン エレクトリック カンパニー セグメント化された固定子用端部キャップ
JP2012075213A (ja) * 2010-09-28 2012-04-12 Nidec Sankyo Corp ステータ
WO2021033496A1 (ja) * 2019-08-20 2021-02-25 三菱電機株式会社 ステータと回転電機、およびそれらの製造方法

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