WO2024252694A1 - 回転電機の電機子、回転電機、および、回転電機の電機子のリード線の製造方法 - Google Patents

回転電機の電機子、回転電機、および、回転電機の電機子のリード線の製造方法 Download PDF

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Publication number
WO2024252694A1
WO2024252694A1 PCT/JP2023/044768 JP2023044768W WO2024252694A1 WO 2024252694 A1 WO2024252694 A1 WO 2024252694A1 JP 2023044768 W JP2023044768 W JP 2023044768W WO 2024252694 A1 WO2024252694 A1 WO 2024252694A1
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WIPO (PCT)
Prior art keywords
electric machine
armature
rotating electric
lead wire
wire
Prior art date
Application number
PCT/JP2023/044768
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English (en)
French (fr)
Japanese (ja)
Inventor
拓也 山本
諭 山代
辰郎 日野
嘉智 中村
覚 袖岡
Original Assignee
三菱電機株式会社
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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 JP2025525931A priority Critical patent/JPWO2024252694A1/ja
Publication of WO2024252694A1 publication Critical patent/WO2024252694A1/ja

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/06—Embedding prefabricated windings in the machines
    • 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

  • This disclosure relates to a rotating electric machine armature, a rotating electric machine, and a method for manufacturing a rotating electric machine armature lead wires.
  • a conventional armature for a rotating electric machine is composed of a stator core having multiple magnetic pole teeth along its inner circumference, and windings wound around each magnetic pole tooth of the stator core via insulating members.
  • a restraining portion is provided on the end face of the stator core to restrain the winding terminal.
  • the restraining portion has a restraining groove that restrains the winding start terminal or the winding end terminal.
  • the restraining groove also restrains the jumper wire that connects the winding start terminals together and also connects the power supply lead wire, and the jumper wire that connects the winding end terminals together and forms the neutral point.
  • the restrained winding end and the jumper wire are connected by a metal piece that is fitted into the restraining portion.
  • the jumper wire is formed into an arc and passes over each magnetic pole tooth to connect the desired windings, making it easy to connect the windings of the armature (see, for example, Patent Document 1).
  • the jumper wires are formed into an arc, so for example, if a thick solid wire is used for the jumper wire, the high rigidity of the jumper wire makes it difficult to maintain its shape as the formed jumper wire springs back. As a result, when inserting the jumper wire into the restraining groove and wiring it along the magnetic pole teeth, it is necessary to wire it again along the desired shape, which creates the problem of poor workability.
  • the conductor wire needs to be pressed into a mold that matches the shape, but a mold is needed for each jumper wire shape, which creates the problem of high mold costs.
  • the crossover wire is not restrained midway when it is placed, it becomes unstable. For example, if it shifts when wiring another crossover wire or when inserting a metal piece into the restraining groove, it becomes necessary to reposition it to the desired position, which creates the problem that the time required for wiring the crossover wire cannot be reduced.
  • This disclosure discloses technology to solve the problems described above, and aims to provide a rotating electric machine armature, a rotating electric machine, and a method for manufacturing the lead wires of a rotating electric machine armature that facilitates the wiring of lead wires, shortens the work time, and reduces investment costs.
  • the armature of the rotating electric machine disclosed herein comprises: an armature core having a yoke portion formed in an annular shape and a plurality of teeth portions protruding radially inward from an inner periphery side of the yoke portion and formed at intervals in a circumferential direction; An insulating member provided on each of the teeth portions; a coil wound around the teeth via the insulating member; a lead wire electrically connected to at least one of a winding start end portion and a winding end end portion of the coil, The lead wire has a plurality of bent portions when viewed in the axial direction.
  • the rotating electric machine disclosed herein is The present invention is provided with the above-described armature for a rotating electric machine.
  • the present disclosure also provides a method for manufacturing a lead wire for an armature of a rotating electric machine, comprising the steps of: a feeding step of feeding out a reel-shaped wire by a preset length; and repeating the bending step of bending the wire at a preset angle.
  • the wire is cut at a preset position to form the lead wire having a plurality of the bent portions.
  • the lead wiring work can be easily performed, the work time can be shortened, and the investment cost can be reduced.
  • FIG. 1 is a cross-sectional view showing a configuration of a rotating electric machine according to a first embodiment.
  • 2 is a perspective view showing a configuration of a laminated core of the armature of the rotating electric machine shown in FIG. 1 .
  • 3A is a perspective view showing the configuration of an insulator for the armature of the rotating electric machine shown in FIG. 1
  • FIG. 3B is a perspective view showing the configuration of an insulator for the armature of the rotating electric machine shown in FIG. 2 is a perspective view showing a configuration of a winding assembly of an armature of the rotating electric machine shown in FIG. 1 ;
  • 2 is a plan view of the armature of the rotating electric machine shown in FIG. 1 to which lead wires are wired.
  • FIG. 6 is a plan view illustrating a process of wiring a lead wire to the armature of the rotating electric machine shown in FIG. 5 .
  • 6 is a plan view illustrating a process of wiring a lead wire to the armature of the rotating electric machine shown in FIG. 5 .
  • FIG. 7 is a perspective view illustrating a step of wiring another lead wire after the step shown in FIG. 6 .
  • 5A to 5C are diagrams illustrating a manufacturing process for the lead wire of the armature of the rotating electric machine according to the first embodiment.
  • 5A to 5C are diagrams illustrating a manufacturing process for the lead wire of the armature of the rotating electric machine according to the first embodiment.
  • 5A to 5C are diagrams illustrating a manufacturing process for the lead wire of the armature of the rotating electric machine according to the first embodiment.
  • 5A to 5C are diagrams illustrating a manufacturing process for the lead wire of the armature of the rotating electric machine according to the first embodiment.
  • 5A to 5C are diagrams illustrating a manufacturing process for the lead wire of the armature of the rotating electric machine according to the first embodiment.
  • 5A to 5C are diagrams illustrating a manufacturing process for the lead wire of the armature of the rotating electric machine according to the first embodiment.
  • 5A to 5C are diagrams illustrating a manufacturing process for the lead wire of the armature of the rotating electric machine according to the first embodiment.
  • 5A to 5C are diagrams illustrating a manufacturing process for the lead wire of the armature of the rotating electric machine according to the first embodiment.
  • 5A to 5C are diagrams illustrating a manufacturing process for the lead wire of the armature of the rotating electric machine according to the first embodiment.
  • FIG. 11 is a plan view showing a configuration of an armature for a rotating electric machine according to a second embodiment.
  • 19 is a plan view illustrating a process for wiring a lead wire to the armature of the rotating electric machine shown in FIG. 18.
  • 19 is a plan view illustrating a process for wiring a lead wire to the armature of the rotating electric machine shown in FIG. 18.
  • FIG. 19 is a plan view illustrating a process for wiring a lead wire to the armature of the rotating electric machine shown in FIG. 18.
  • 13 is a plan view illustrating a process for wiring another lead wire of the armature of the rotating electric machine according to the second embodiment.
  • FIG. 5A to 5C are diagrams illustrating a manufacturing process for the lead wire of the armature of the rotating electric machine according to the first embodiment.
  • 6 is a perspective view showing a configuration in which lead wires are fixed to the armature of the rotating electric machine shown in FIG. 5 by molding.
  • Fig. 25A is a cross-sectional view showing a wire material forming a coil of a rotating electric machine according to embodiment 3.
  • FIG. 25B is a cross-sectional view showing a wire material forming a lead wire and a crossover wire of a rotating electric machine according to embodiment 3.
  • FIG. 25C is a cross-sectional view showing another wire material forming a lead wire and a crossover wire of a rotating electric machine according to embodiment 3.
  • each direction in the rotating electric machine 100 is indicated as the circumferential direction Z, the axial direction Y, the radial direction X, the outer side X1 of the radial direction X, and the inner side X2 of the radial direction X. Therefore, these directions are the same in other parts as well, and each direction will be described based on these directions.
  • Fig. 1 is a cross-sectional view showing the configuration of a rotating electric machine according to a first embodiment.
  • Fig. 2 is a perspective view showing the configuration of a laminated core of an armature of the rotating electric machine shown in Fig. 1.
  • Fig. 3 is a perspective view showing the configuration of an insulator of the armature of the rotating electric machine shown in Fig. 1
  • Fig. 3A is a perspective view showing the configuration of an insulator on the connection side in the axial direction Y
  • Fig. 3B is a perspective view showing the configuration of an insulator on the anti-connection side in the axial direction Y.
  • Fig. 4 is a perspective view showing the configuration of a winding assembly of the armature of the rotating electric machine shown in Fig. 1.
  • FIG. 5 is a plan view of the lead wires wired to the armature of the rotating electric machine shown in FIG. 1.
  • FIG. 6 is a plan view explaining the process of wiring the lead wires to the armature of the rotating electric machine shown in FIG. 5.
  • FIG. 7 is a plan view explaining the process of wiring the lead wires to the armature of the rotating electric machine shown in FIG. 5.
  • FIG. 8 is a perspective view explaining the process of wiring another lead wire after the process shown in FIG. 6.
  • FIGS. 9 to 17 and 23 are diagrams explaining the manufacturing process of the lead wires of the armature of the rotating electric machine according to embodiment 1.
  • FIG. 24 is a perspective view showing the configuration in which the lead wires are molded and fixed to the armature of the rotating electric machine shown in FIG. 5.
  • the rotating electric machine 30 includes an armature 36 and a field element 37.
  • the armature 36 includes a winding assembly 34 in which a coil 32 is wound around a laminated core 31 as an armature core via an insulator 33 as an insulating member, and the winding assembly 34 is arranged in an annular shape.
  • the armature 36 is installed in a frame 35 by press-fitting or shrink-fitting.
  • the field element 37 is arranged on the inner circumference side of the armature 36 and has a permanent magnet.
  • the rotating electric machine further includes a bracket 38a on the connection side that holds the armature 36 and the field element 37, a bracket 38b on the non-connection side, and a power connector 39.
  • the field element 37 is rotatably held by the brackets 38a and 38b by bearings (not shown).
  • the laminated core 31 is formed of multiple electromagnetic steel sheets 310 stacked in the axial direction Y.
  • a yoke portion 31a extending in the circumferential direction Z is formed on the outer peripheral side of the outer side X1 in the radial direction X of the laminated core 31.
  • a tooth portion 31b protruding from the center position of the yoke portion 31a in the circumferential direction Z to the inner side X2 in the radial direction X is formed on the inner peripheral side of the inner side X2 in the radial direction X of the yoke portion 31a.
  • a protrusion portion 31c extending on both sides in the circumferential direction Z is formed on each end of the inner side X2 in the radial direction X of the laminated core 31.
  • the insulator 33 has two insulators 33a and 33b.
  • the term "insulator 33" is used.
  • the insulator 33a attached to the wiring side of the laminated core 31 in the axial direction Y includes an outer flange 33a1, an inner flange 33a2, and a body 33a3.
  • the outer flange 33a1 includes a first restraining groove 33c and a second restraining groove 33d.
  • the insulator 33b attached to the non-wiring side of the laminated core 31 in the axial direction Y includes an outer flange 33b1, an inner flange 33b2, and a body 33b3.
  • the outer flanges 33a1, 33b1 of the insulators 33a, 33b cover the yoke portion 31a from both sides in the axial direction Y
  • the inner flanges 33a2, 33b2 cover the protruding portion 31c from both sides in the axial direction Y
  • the body portions 33a3, 33b3 cover the teeth portion 31b from both sides in the axial direction Y.
  • the insulators 33a, 33b are attached to the laminated core 31, and the coil 32 is wound around the laminated core 31 to form the assembly.
  • the coil 32 is wound around the teeth portion 31b via the insulators 33a, 33b.
  • an insulating member such as an insulating film is disposed between both side surfaces of the laminated core 31 in the circumferential direction Z and the wound coil 32.
  • the winding assembly 34 is formed by continuously winding the winding assembly 34 from the insulator 33b side on the anti-connection side around the laminated core 31 to which another insulator 33a, 33b is attached, and the coil 32 is formed by a set of continuous windings of the two winding assemblies 34.
  • the winding assembly 34 is wound into a set of two continuous winding coils 32, this is not limited to this, and the coils may be wound with one winding assembly each, or, for example, the coil may be formed by continuously winding three winding assemblies.
  • the coil terminal portion 32a of the coil 32 constituting the winding assembly 34 is inserted into the first restraining groove 33c of the insulator 33a on the connection side in the axial direction Y, and later, the terminal portion of the lead wire 14 is inserted into the second restraining groove 33d in a manner that protrudes from the radial inner side to the outer peripheral side of the outer flange portion 33a1. Then, the multiple winding assemblies 34 thus formed are arranged in a ring shape and fitted into the frame 35 by press fitting or shrink fitting, forming the armature 36.
  • the coil 32 wound around the insulator 33 is electrically connected to the lead wire 14.
  • the lead wire 14 is electrically connected to at least one of the start or end terminals of the coil 32, and in this case is a power line 14a that inputs the U, V, and W phases of three-phase AC from the outside to the coil 32, and a jumper wire 15 that serves as a neutral wire and connects between the coils 32.
  • an input portion 14b which is the end of the power line 14a, is provided.
  • the lead wire 14 When viewed from the axial direction Y, the lead wire 14 is disposed on the wound coil 32 of the insulator 33. Therefore, the folded portions 15c1, 15c2, 15c3, and 15c4 (see Figures 7 and 8) of the lead wire 14 described below are disposed in the area where the coil 32 is wound between the outer flange portion 33a1 and the inner flange portion 33a2 of the insulator 33. In the following description, any or all of the folded portions of the lead wire 14 may be referred to as folded portion 15c.
  • the lead wire 14 is made of a conductive wire material such as highly conductive copper or aluminum covered with a highly insulating coating such as vinyl.
  • the wire material may be a stranded wire, but a solid wire with high rigidity is better as it is easier to maintain the molded shape. It may also be made of a conductive wire material made of the same material as the coil 32, covered with an enamel coating to insulate it. Furthermore, a non-insulated conductive wire material may be used, but in that case, an insulating distance must be secured to ensure the insulating performance between the ground, between the coils 32, and between the lead wires 14.
  • the cross section of the wire material may not only be circular, but also approximately rectangular.
  • winding assemblies 34 are denoted by the reference numerals 34a, 34b, 34c, 34d, and 34e.
  • one end 15a of the jumper wire 15 is inserted into the second restraining groove 33d provided in the insulator 33a of the winding assembly 34a. Then, a bent portion 15c1 is placed by bending the jumper wire 15 over the coil 32 of the winding assembly 34a. Next, the jumper wire 15 extends toward the upper portion of the coil 32 of the circumferentially adjacent winding assembly 34b. Then, a bent portion 15c2 is placed by bending the jumper wire 15 over the coil 32 of the winding assembly 34b. Then, the jumper wire 15 extends toward the upper portion of the coil 32 of the circumferentially adjacent winding assembly 34c.
  • a bent portion 15c3 is placed on the top of the coil 32 of the winding assembly 34c.
  • the jumper wire 15 extends to the top of the coil 32 of the circumferentially adjacent winding assembly 34d.
  • a bent portion 15c4 is placed on the top of the coil 32 of the winding assembly 34d.
  • the jumper wire 15 extends toward the second restraining groove 33d of the insulator 33a of the winding assembly 34d, and the other terminal portion 15b of the jumper wire 15 is inserted into the second restraining groove 33d of the insulator 33a of the winding assembly 34d.
  • the jumper wire 15 when viewed from the axial direction Y, the jumper wire 15 is formed at four bent portions 15c1, 15c2, 15c3, and 15c4. These are the same as the number of coils 32 between which the jumper wire 15 is installed, i.e., the number of teeth portions 31b. Therefore, when installing the jumper wire 15, the installation positions of the bent portions 15c1, 15c2, 15c3, and 15c4 can be set to the coils 32 of the teeth portions 31b, improving the workability of installing the jumper wire 15. In addition, by checking the number of bent portions 15c1, 15c2, 15c3, and 15c4, the number of teeth portions 31b corresponding to the coils 32 to be connected can be ascertained, preventing mistakes in installing the jumper wire 15.
  • the number of bent portions 15c of the lead wire 14 does not have to be the same as the number of teeth 31b, and it is sufficient that there is a maximum of one bent portion 15c arranged above the same teeth 31b.
  • two bent portions may be provided. In that case, as shown in FIG. 23, there will be bent portions 15c16 and 15c17, or bent portions 15c17 and 15c18, which are bent twice in different directions in the circumferential direction Z.
  • another jumper wire 15 is placed between the winding assembly 34d and the winding assembly 34e.
  • One end of this jumper wire 15 is inserted into the second restraining groove 33d of the insulator 33a of the winding assembly 34d, and a bent portion 15c5 is placed by bending the jumper wire 15 over the coil 32 of the winding assembly 34d.
  • the jumper wire 15 then extends over the coil 32 of the circumferentially adjacent winding assembly 34e.
  • the bent portion 15c6 is placed by bending the coil 32 of the winding assembly 34e over the coil 32.
  • the jumper wire 15 then extends toward the second restraining groove 33d of the insulator 33a, and the other end of the jumper wire 15 is inserted into the second restraining groove 33d of the insulator 33a of the winding assembly 34e.
  • a conductive metal piece 60 is inserted into each of the restraining grooves 33c, 33d of the insulator 33a of the winding assemblies 34a, 34d, 34e to which the jumper wire 15 is wired, and installed.
  • the metal piece 60 then contacts and conducts with the coil terminal portion 32a of the coil 32 and the terminal portions 15a, 15b of the jumper wire 15, thereby electrically connecting the jumper wire 15 and the coil 32.
  • the excess terminal portions 15a, 15b are cut off, resulting in the connection state of Figure 6.
  • the other jumper wires 15 and power supply wires 14a are then similarly connected in the state shown in Figure 5, completing the electrical connection between the coil 32 of the armature 36 and the lead wires 14.
  • the field element 37, brackets 38a and 38b, and armature 36 shown in FIG. 1 are combined, and the input part 14b is inserted into the power connector 39 to produce the rotating electric machine 30.
  • the bending shaft 72 is rotated in the counterclockwise direction R1 to bend the wire 16 to a preset angle, forming the bent portion 15c1.
  • the bending shaft 72 is retracted toward the back of the page to a position where it does not come into contact with the wire 16.
  • the bending shaft 72 is retracted, it will attempt to return to the clockwise direction R2 due to springback, so if the wire is bent to a slightly larger angle in the state shown in FIG. 10 and then the bending shaft 72 is retracted, the accuracy of the bending will be improved.
  • the wire 16 is further fed by the feed shaft 70 a preset amount. Then, after rotating the bending shaft 72 until the position of the protrusion 72a is in the state shown in Figure 12, it moves towards the front side of the page, and the wire 16 passes between the protrusions 72a of the bending shaft 72. From this state, as shown in Figure 13, by rotating the bending shaft 72 in the clockwise direction R2, the wire 16 is bent to a preset angle on the upper side of the figure, forming the bent portion 15c2.
  • the bending shaft 72 is returned in the counterclockwise direction R1, and after the bending shaft 72 is returned to the same state as in FIG. 12, the wire 16 is fed a preset length by the feed shaft 70 to the state shown in FIG. 15. Then, as shown in FIG. 16, the bending shaft 72 is rotated in the clockwise direction R2 to a preset angle, and the wire 16 is bent to form the bent portion 15c3. Thereafter, the wire is similarly fed to the desired bending position, and bending is repeated to the desired bending angle to form the bent portion 15c4, and the required shape of the lead wire 14 is formed as shown in FIG. 17, and the lead wire 14 is cut to the required length to form one of the crossover wires 15 shown in FIG. 7 in this case.
  • multiple bent portions 15c1, 15c2, 15c3, and 15c4 can be automatically formed in sequence, improving the workability of manufacturing lead wires 14.
  • lead wires 14 formed in a preset shape can be produced with one device simply by setting the feed amount and bending angle, reducing the number of types of jigs and minimizing the effort required for changeovers, improving the workability of forming lead wires 14.
  • the coil terminal portion 32a of the coil 32 constituting the winding assembly 34 is inserted into the first restraining groove 33c, and the terminal portions 15a, 15b of the lead wire 14 are inserted into the second restraining groove 33d from the inside X2 to the outside X1 in the radial direction X of the outer flange portion 33a1, but this is not limited to this.
  • the coil terminal portion 32a of the winding assembly 34d may be inserted into the second restraining groove 33d, or may be inserted into each restraining groove 33c, 33d in a position that is easy to insert.
  • the coil terminal portion 32a and the terminal portions 15a, 15b of the lead wire 14 are electrically connected by inserting them into the respective restraining grooves 33c, 33d of the insulator 33a and placing the metal piece 60 to establish contact and conduction, but this is not limited to this.
  • the coil terminal portion 32a and the terminal portions 15a, 15b of the lead wire 14 may be electrically connected by brazing, soldering, crimp terminals, or insulation displacement terminals.
  • the lead wire 14 is not fixed at any portion other than the connection end. Note that the lead wire 14 may be fixed at any portion other than the connection end by a molded portion 41, as shown in FIG. 24.
  • bent portions shown above are not formed on the outer side X1 of each insulator in the radial direction X. Furthermore, there are multiple bent portions for one lead wire shown above in the circumferential direction Z. Furthermore, the multiple bent portions for one lead wire shown above are not formed in overlapping positions in the axial direction Y.
  • an armature core having a yoke portion formed in an annular shape and a plurality of teeth portions protruding radially inward from an inner periphery side of the yoke portion and formed at intervals in a circumferential direction;
  • An insulating member provided on each of the teeth portions; a coil wound around the teeth via the insulating member; a lead wire electrically connected to at least one of a winding start end portion and a winding end end portion of the coil,
  • the lead wire has a plurality of bent portions when viewed from the axial direction. Since the installation can be achieved simply by forming a bent portion in the lead wire, the wiring work of the lead wire can be easily performed, the work time can be shortened, and the investment cost can be reduced.
  • the rotating electric machine of the first embodiment configured as described above, Since the above-described rotating electric machine armature is provided, Since the installation can be achieved simply by forming a bent portion in the lead wire, the wiring work of the lead wire can be easily performed, the work time can be shortened, and the investment cost can be reduced.
  • the wire is cut at a preset position to form the lead wire having a plurality of the bent portions. Since the installation can be achieved simply by forming a bent portion in the lead wire, the wiring work of the lead wire can be easily performed, the work time can be shortened, and the investment cost can be reduced.
  • the number of the bent portions of the lead wire is the same as the number of the teeth portions that are present between the bent portions and at least one of the winding start terminal portion and the winding end terminal portion of the coil when viewed from the axial direction.
  • the bent portion of the lead wire is disposed in the area where the coil is wound as viewed from the axial direction. Furthermore, the lead wiring work can be easily performed, the work time can be shortened, and the investment cost can be reduced.
  • the bent portions of the lead wires are arranged without being overlapped in the axial direction. Furthermore, the lead wiring work can be easily performed, the work time can be shortened, and the investment cost can be reduced.
  • the lead wire is connected at its connection end to a terminal that is in contact with at least one of the winding start end portion and the winding end end portion of the coil, Furthermore, the lead wiring work can be easily performed, the work time can be shortened, and the investment cost can be reduced.
  • the lead wire is not fixed at any part other than the connection end. Furthermore, the lead wiring work can be easily performed, the work time can be shortened, and the investment cost can be reduced.
  • the lead wire is fixed by the molded part except for the connection end. Furthermore, the lead wiring work can be easily performed, the work time can be shortened, and the investment cost can be reduced.
  • FIG. 18 is a plan view showing the configuration of an armature for a rotating electric machine according to the second embodiment.
  • Figures 19 to 21 are plan views for explaining the process of wiring the lead wires to the armature of the rotating electric machine shown in Figure 18.
  • Figure 22 is a plan view for explaining the process of wiring another lead wire of the armature of the rotating electric machine according to embodiment 2.
  • parts similar to those in embodiment 1 above are omitted by assigning the same reference numerals. Also, parts similar to those in embodiment 1 above will be explained using the same reference numerals. This also applies to the following embodiments, so explanations thereof will be omitted as appropriate.
  • one end 15a of the jumper wire 151 is inserted into the second restraining groove 33d provided in the insulator 33a of the winding assembly 34a. Then, a bent portion 15c7 is placed by bending the jumper wire 15 in the vicinity of the outer flange portion 33a1 of the insulator 33a of the winding assembly 34a. Next, the jumper wire 15 extends to between the circumferential direction Z of the winding assemblies 34b and 34c adjacent in the circumferential direction. Then, a bent portion 15c8 is placed by bending the jumper wire 15 in the upper portion between the circumferential direction Z of the winding assemblies 34b and 34c.
  • the jumper wire 15 extends to the vicinity of the outer flange portion 33a1 of the insulator 33a of the winding assembly 34d adjacent in the circumferential direction Z, and a bent portion 15c9 is placed by bending the jumper wire 15 in the vicinity of the outer flange portion 33a1 of the insulator 33a.
  • the crossover wire 15 extends toward the second restraining groove 33d of the insulator 33a of the winding assembly 34d, and the other end portion 15b of the crossover wire 15 is inserted into the second restraining groove 33d of the insulator 33a of the winding assembly 34d.
  • the upper part of the coil 32 of the winding assembly 34b and the upper part of the coil 32 of the winding assembly 34c do not have a bent portion. Therefore, according to the jumper wire 151 of the present embodiment 2, the number of bends can be reduced by one compared to the above embodiment 1, and the time required for the molding operation of the jumper wire 151 can be shortened.
  • the jumper wire 151 is arranged via a path that contacts the inner flange portion 33a2 of the insulator 33a of the winding assembly 34b and the winding assembly 34c.
  • another jumper wire 152 is placed between winding assembly 34d and winding assembly 34e.
  • One end portion 15a of this jumper wire 152 is inserted into the second restraining groove 33d of the insulator 33a of winding assembly 34d, and a bent portion 15c10 is placed near the insulator 33a of winding assembly 34d.
  • the jumper wire 15 then extends so as to contact the inner flange portion 33a2 of the insulator 33a of the winding assembly 34e adjacent in the circumferential direction Z.
  • a bent portion 15c11 is placed near the inner flange portion 33a2 of the insulator 33a of winding assembly 34e.
  • the crossover wire 15 extends toward the second restraining groove 33d of the insulator 33a, and the other end of the crossover wire 15 is inserted into the second restraining groove 33d of the insulator 33a of the winding assembly 34e.
  • the crossover wire 152 is arranged via a path that brings it into contact with the inner flange portion 33a2 of the insulator 33a, so the position of the crossover wire 152 is stable, achieving the same effect as in the above case.
  • the power lines 141 and 142 are bent fewer times than when they are bent at the top of the coils 32 of each winding assembly 34.
  • the power line 141 is connected across six coils 32, but when viewed from the axial direction Y, there are only four bent parts: 14c1, 14c2, 14c3, and 14c4.
  • the power line 142 is connected across three coils 32, but when viewed from the axial direction Y, there are only two bent parts: 14c5 and 14c6.
  • the shapes of the power lines 141 and 142 are formed in this way, which shortens the forming work time.
  • the power lines 141, 142 are routed through a path that contacts not only the inner flange 33a2 of the insulator 33a but also the outer flange 33a1 of the insulator 33a, making the positions of the power lines 141, 142 more stable.
  • the number of bent points of the lead wire 14 when viewed from the axial direction Y is less than the number of teeth portions 31b (coils 32) that exist between the connection ends of the lead wire, so the forming work time of the lead wire 14 can be shortened.
  • the lead wire 14 since the lead wire 14 has a portion that is arranged in contact with the insulator 33 other than the connection end, the position of the lead wire 14 after wiring is stable and is less likely to shift when placing another lead wire 14, improving wiring workability. Furthermore, the lead wire 14 does not shift even in material handling and subsequent processes after the wiring work, and there is no need to make any adjustments, so an inexpensive rotating electric armature can be provided.
  • the shape of the lead wire 14 is not limited to this.
  • bends 15c12, 15c13, 15c14, and 15c15 may be formed, and the jumper wire 151 may be wired via a route that contacts not only the inner flange 33a2 of the insulator 33a, but also the outer flange 33a1 of the insulator 33a. This configuration further stabilizes the position of the jumper wire 151.
  • the same effects as those of the first embodiment can be obtained, and
  • the number of the bent portions of the lead wire is smaller than the number of the teeth portions that are present between the bent portions and at least one of the winding start terminal portion and the winding end terminal portion of the coil when viewed from the axial direction.
  • the lead wire has a portion other than the connection end that is in contact with the insulating member. Since the lead wires come into contact with the insulating member, the position of the lead wires can be stabilized, shortening the wiring work time. In addition, even after wiring, the lead wires do not shift during material handling or post-processing, and there is no need to make any adjustments, making it possible to provide an armature for an inexpensive rotating electric machine.
  • Fig. 25A is a cross-sectional view showing wire material forming a coil of a rotating electric machine according to embodiment 3.
  • Figs. 25B and 25C are cross-sectional views showing wire material forming a lead wire and a jumper wire of a rotating electric machine according to embodiment 3.
  • the wire material forming the coil 32 of a rotating electric machine having the structure described in each of the above embodiments and the wire material forming the lead wire 14 and the jumper wire 15 will be described.
  • the wire that forms the coil 32 is formed of a coil conductor 32c2 and an enamel coating 32c1 that covers the outer circumference of the coil conductor 32c2 with a thickness W1, as shown in Figure 25A.
  • the wire that forms the lead wire 14 and the jumper wire 15 is formed of a solid wire 15d2 or a stranded wire 15d3 and an external coating 15d1 that covers the outer circumference of the solid wire 15d2 or the stranded wire 15d3 with a thickness W2 or W3, as shown in Figures 25B and 25C.
  • the external coating 15d1 is formed of, for example, a fluororesin or PVC (polyvinyl chloride), and is stronger and more elastic than the enamel coating 32c1.
  • the thicknesses W2 and W3 of the outer coating 15d1 are greater than the thickness W1 of the enamel coating 32c1 that covers the outer circumference of the coil conductor 32c2, the outer coating 15d1 is less likely to break than the enamel coating 32c1 of the coil 32 when forming the bent portion, ensuring insulation strength.
  • the stranded wire 15d3 is easier to deform than the solid wire 15d2, so it has the advantage of requiring less force for the forming process. Note that the thickness W3 of the outer coating 15d1 in the case of the stranded wire 15d3 indicates the minimum distance from the outermost diameter part of the stranded wire 15d3 to the outer diameter of the outer coating 15d1.
  • the same effects as those of the above-described embodiments can be obtained, and in addition,
  • the thickness of the outer coating of the lead wire is thicker than the thickness of the outer coating of the coil, This ensures the insulation distance and the insulation strength. In addition, because it has excellent strength and elasticity, it is difficult to break and the insulation strength can be further ensured.
  • the conductor which is the core of the lead wire, is made of a stranded wire. It is easier to deform than solid wire, making it excellent for forming work.
  • an armature core having a yoke portion formed in an annular shape and a plurality of teeth portions protruding radially inward from an inner periphery side of the yoke portion and formed at intervals in a circumferential direction; An insulating member provided on each of the teeth portions; a coil wound around the teeth via the insulating member; a lead wire electrically connected to at least one of a winding start end portion and a winding end end portion of the coil, The lead wire is an armature for a rotating electric machine having a plurality of bent portions when viewed in the axial direction.
  • Appendix 2 An armature for a rotating electric machine as described in Appendix 1, wherein the number of the bent portions of the lead wire, when viewed in the axial direction, is the same as the number of the teeth portions that exist between the lead wire and at least one of the winding start terminal portion or the winding end terminal portion of the coil and are electrically connected to the lead wire.
  • Appendix 3 An armature for a rotating electric machine as described in Appendix 1, wherein the number of bent portions of the lead wire, when viewed in the axial direction, is less than the number of teeth portions that exist between the lead wire and at least one of the winding start terminal portion or the winding end terminal portion of the coil and are electrically connected to the lead wire.
  • Appendix 4 4.
  • a rotating electric machine comprising the rotating electric machine armature according to any one of claims 1 to 4.
  • Appendix 6) a feeding step of feeding out a reel-shaped wire by a preset length; and repeating the bending step of bending the wire at a preset angle.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)
PCT/JP2023/044768 2023-06-05 2023-12-14 回転電機の電機子、回転電機、および、回転電機の電機子のリード線の製造方法 WO2024252694A1 (ja)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010011627A (ja) * 2008-06-26 2010-01-14 Asmo Co Ltd バスバー、バスバー装置、ステータ結合体、ブラシレスモータ、及びステータ結合体の製造方法
US20120098380A1 (en) * 2010-10-21 2012-04-26 Emerson Electric Co. End Caps for Stator Segments of Segmented Stator Assemblies
JP2017011831A (ja) * 2015-06-18 2017-01-12 矢崎総業株式会社 給電リング
JP2018126059A (ja) * 2014-12-26 2018-08-09 日立オートモティブシステムズ株式会社 コイル成形装置及び回転電機のコイル
JP2020178530A (ja) * 2017-08-03 2020-10-29 三菱電機株式会社 固定子、電動機および密閉型圧縮機
WO2021019751A1 (ja) * 2019-07-31 2021-02-04 東芝キヤリア株式会社 電動機、圧縮機、冷凍サイクル装置および電動機の製造方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010011627A (ja) * 2008-06-26 2010-01-14 Asmo Co Ltd バスバー、バスバー装置、ステータ結合体、ブラシレスモータ、及びステータ結合体の製造方法
US20120098380A1 (en) * 2010-10-21 2012-04-26 Emerson Electric Co. End Caps for Stator Segments of Segmented Stator Assemblies
JP2018126059A (ja) * 2014-12-26 2018-08-09 日立オートモティブシステムズ株式会社 コイル成形装置及び回転電機のコイル
JP2017011831A (ja) * 2015-06-18 2017-01-12 矢崎総業株式会社 給電リング
JP2020178530A (ja) * 2017-08-03 2020-10-29 三菱電機株式会社 固定子、電動機および密閉型圧縮機
WO2021019751A1 (ja) * 2019-07-31 2021-02-04 東芝キヤリア株式会社 電動機、圧縮機、冷凍サイクル装置および電動機の製造方法

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