WO2024185249A1 - 電気機械の電機子および電気機械 - Google Patents

電気機械の電機子および電気機械 Download PDF

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Publication number
WO2024185249A1
WO2024185249A1 PCT/JP2023/044178 JP2023044178W WO2024185249A1 WO 2024185249 A1 WO2024185249 A1 WO 2024185249A1 JP 2023044178 W JP2023044178 W JP 2023044178W WO 2024185249 A1 WO2024185249 A1 WO 2024185249A1
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WIPO (PCT)
Prior art keywords
armature
teeth
core
electric machine
insulating
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Application number
PCT/JP2023/044178
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English (en)
French (fr)
Japanese (ja)
Inventor
浩樹 村上
伸 酒井
真広 桑迫
将太 伊藤
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to JP2025505075A priority Critical patent/JPWO2024185249A1/ja
Publication of WO2024185249A1 publication Critical patent/WO2024185249A1/ja

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    • 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

Definitions

  • This disclosure relates to an armature for an electric machine and an electric machine.
  • Conventional electric machine armatures and electric machines are assembled by placing insulating material on the teeth of an armature core made by laminating steel sheets that have been punched into a specified shape, and then winding a drive coil on top of the insulating material. If the drive coil is wound irregularly due to manufacturing variations, it may not be possible to ensure a sufficient distance between the drive coils on adjacent teeth.
  • the drive coils are coated with an insulating film, but if the potential difference between the coils is large, the insulating film alone may not be enough to maintain insulation.
  • holes may be present in the insulating film during manufacturing, interphase insulation is ensured by inserting an insulating film between the drive coils wound on adjacent teeth (see, for example, Patent Document 1).
  • This disclosure discloses technology to solve the problems described above, and aims to provide an armature for an electric machine and an electric machine that can be easily assembled and that more reliably ensures interphase insulation between drive coils, making them highly reliable.
  • the armature of the electric machine of the present disclosure comprises: An armature core; a driving coil wound around an insulating frame and disposed on the armature core,
  • the armature core is a plurality of teeth portions formed at intervals in a first direction and protruding in a second direction perpendicular to the first direction; a core back portion formed at one end side of the teeth portion in the second direction by connecting the teeth portions adjacent to each other in the first direction and extending in the first direction; a slot region surrounded by the teeth portion and the core back portion,
  • the insulating frame is a winding frame portion that covers the teeth portion and the core back portion of the armature core on the slot region side and around which the drive coil is wound; a through hole formed to penetrate in a second direction and in which the teeth portion of the armature core is disposed, the drive coil is installed on each of the teeth portions via the insulating frame,
  • the coil winding has an insulating film member having an interphase insulation portion installed between the drive coils
  • the armature of the electric machine of the present disclosure also comprises: An armature core; a driving coil wound around an insulating frame and disposed on the armature core,
  • the armature core is a plurality of teeth portions formed at intervals in a first direction and protruding in a second direction perpendicular to the first direction; a core back portion formed at one end side of the teeth portion in the second direction by connecting the teeth portions adjacent to each other in the first direction and extending in the first direction; a slot region surrounded by the teeth portion and the core back portion,
  • the insulating frame is a winding frame portion that covers the teeth portion and the core back portion of the armature core on the slot region side and around which the drive coil is wound; a through hole formed to penetrate in a second direction and in which the teeth portion of the armature core is disposed, the drive coil is installed on each of the teeth portions via the insulating frame,
  • the interphase insulation portion is arranged between the drive coils adjacent in the first direction and has a
  • the electric machine armature and electric machine disclosed herein facilitate assembly work and improve reliability by more reliably ensuring interphase insulation between drive coils.
  • FIG. 1 is a front view showing a configuration of an electric machine according to a first embodiment.
  • FIG. 2 is a perspective view showing the configuration of an armature of the electric machine shown in FIG. 1 .
  • FIG. 3 is a cross-sectional view showing the configuration of the armature shown in FIG. 2 .
  • FIG. 4 is a cross-sectional view showing a main part of the armature shown in FIG. 3 .
  • 3 is a top view showing a configuration of an armature core of the armature shown in FIG. 2 .
  • 6A is a perspective view showing the configuration of an insulating frame of the armature shown in FIG. 2
  • FIG. 6B is a perspective view showing the configuration of the insulating frame of the armature shown in FIG.
  • FIG. 7A is a perspective view showing the configuration of an insulating film member of the armature shown in FIG. 2
  • FIG. 7B is a perspective view showing the configuration of an insulating film member of the armature shown in FIG. 8 is a perspective view showing a state in which the insulating film member shown in FIG. 7 is installed on the armature core shown in FIG. 5
  • FIG. 11 is a perspective view showing a state in which an insulating film member is installed on an armature core of an armature according to a second embodiment.
  • 10 is a cross-sectional view showing a state in which an insulating film member is installed on the armature core of the armature shown in FIG. 9 .
  • FIG. 10 is a top view of the armature core shown in FIG. 9 .
  • FIG. 12A is a perspective view showing the configuration of an insulating film member of an armature according to embodiment 3
  • FIG. 12B is a perspective view showing the configuration of an insulating film member of an armature according to embodiment 3.
  • 13 is a perspective view showing a state in which the insulating film member shown in FIG. 12 is installed on the armature core of the armature according to embodiment 3.
  • FIG. FIG. 2 is a cross-sectional view showing a configuration in which the armatures of the respective embodiments are applied to an armature of a rotary electric machine.
  • 15A is a perspective view showing a configuration of an insulating film member of an armature according to embodiment 4, and FIG.
  • FIG. 15B is a perspective view showing a configuration of an insulating film member of an armature according to embodiment 4.
  • FIG. 16 is a perspective view showing a state in which the insulating film member shown in FIG. 15 is installed on the armature core of the armature according to embodiment 4.
  • FIG. 17 is a cross-sectional view taken along the line K-K showing the configuration of the armature shown in FIG. 16.
  • 18A is a perspective view showing the configuration of an insulating film member of an armature according to embodiment 5
  • FIG. 18B is a perspective view showing the configuration of an insulating film member of an armature according to embodiment 5.
  • FIG. 19 is a perspective view showing a state in which the insulating film member shown in FIG. 18 is installed on the armature core of the armature according to embodiment 5.
  • FIG. FIG. 20 is a partially enlarged top view of the armature core shown in FIG. 19 .
  • Fig. 1 is a front view showing the configuration of an electric machine according to a first embodiment.
  • Fig. 2 is a perspective view showing the configuration of an armature of the electric machine shown in Fig. 1.
  • Fig. 3 is a cross-sectional view showing the configuration of the armature shown in Fig. 2.
  • Fig. 4 is a cross-sectional view showing a main part of the armature shown in Fig. 3.
  • Fig. 5 is a top view showing the configuration of an armature core of the armature shown in Fig. 2.
  • FIG. 6A is a perspective view showing the configuration of the insulating frame of the armature shown in FIG. 2, and FIG. 6B is a perspective view showing the configuration of the insulating frame of the armature shown in FIG. 2.
  • FIG. 7A is a perspective view showing the configuration of the insulating film member of the armature shown in FIG. 2
  • FIG. 7B is a perspective view showing the configuration of the insulating film member of the armature shown in FIG. 2.
  • FIG. 8 is a perspective view showing the state in which the insulating film member shown in FIG. 7 is installed on the armature core shown in FIG. 5.
  • the electric machine 1000 includes an armature 100 and a field magnet 200.
  • the field magnet 200 includes magnets 201 that form magnetic poles, and a yoke portion 202 for mounting the magnets 201.
  • the magnets 201 are attached to the yoke portion 202 by a joint such as an adhesive, a pressure sensitive adhesive, or an adhesive tape.
  • the field magnet 200 is configured such that a plurality of magnets 201 with different magnetic poles are arranged alternately at a predetermined interval in the first direction Y on the surface of the yoke portion 202.
  • the armature 100 and the field magnet 200 are configured to be movable relative to each other in the first direction Y in which the magnets 201 are aligned, by passing a current through the armature 100.
  • the armature 100 comprises an armature core 1, a drive coil 7 wound around an insulating frame 5 and installed on the armature core 1, and an insulating film member 6. Note that in each figure, the drive coil 7 is shown in a simplified form.
  • the directions are described as the first direction Y shown above, the second direction X, which is a direction perpendicular to the first direction Y from the armature 100 toward the field magnet 200, and the third direction Z, which is a direction perpendicular to the first direction Y and the second direction X.
  • the armature core 1 is formed by stacking multiple electromagnetic steel sheets in the third direction Z.
  • the multiple electromagnetic steel sheets are held and fixed in the third direction Z by joints such as crimping between the electromagnetic steel sheets, adhesives, and pressure sensitive adhesives to form the armature core 1.
  • the armature core 1 has teeth 2 and a core back 3.
  • the teeth 2 are formed to protrude in the second direction X from the armature 100 toward the field 200, and are formed in a plurality of teeth at predetermined intervals in the first direction Y.
  • the side of the teeth 2 is provided with a locking groove 8 as a recess for engaging with a locking claw 14 as a protrusion described later.
  • the core back 3 is formed on one end side X1 of the teeth 2 in the second direction X so as to extend in the first direction Y so as to connect the teeth 2 adjacent to each other in the first direction Y (in the following description, "adjacent to the first direction Y" may be abbreviated to “adjacent”) in the first direction Y.
  • a slot region 4 is formed surrounded by the teeth 2 and the core back 3, and the drive coil 7 is housed in the slot region 4.
  • the insulating frame 5 around which the drive coil 7 is wound includes a winding frame portion 9, a core-back side flange portion 12, a teeth side flange portion 13, a base 10, a through hole 11, and a locking claw 14.
  • the winding frame portion 9 is formed to cover the periphery of the teeth portion 2 of the armature core 1, and provides insulation between the teeth portion 2 and the drive coil 7.
  • the core-back side flange portion 12 and the teeth side flange portion 13 are formed by extending from the winding frame portion 9, and are walls that allow the drive coil 7 to be stored without falling over.
  • the core-back side flange portion 12 also contributes to insulation between the drive coil 7 and the core-back portion 3.
  • the base 10 has grooves formed therein for guiding the lead-in portion and end portion of the drive coil 7, and may also have a function of holding a terminal for connecting the drive coil 7 (not shown). Note that in FIG. 6, the base 10 is formed on only one of the end faces in the third direction Z, but the base 10 may be formed on both end faces in the third direction Z.
  • the through hole 11 is formed penetrating in the second direction X, and the teeth portion 2 is disposed therein.
  • the locking claws 14 are formed on the inner peripheral surface of the through hole 11, and as shown in FIG. 4, they are fitted into the locking grooves 8 of the teeth portion 2 to fix the insulating frame 5 to the teeth portion 2.
  • the figure shows an example in which one locking claw 14 is provided on each inner peripheral surface of the through hole 11 facing the first direction Y, but it is also possible to provide multiple locking claws. It is also possible to provide them on only one inner peripheral surface of the through hole 11 shown at the end. It is also possible to provide them on the inner peripheral surface of the through hole 11 facing the third direction Z. Naturally, the locking grooves 8 of the teeth portion 2 are appropriately formed at locations corresponding to the locking claws 14.
  • the material of the insulating frame 5 is generally a resin such as PPS (abbreviation of Polyphenylene Sulfide), LCP (abbreviation of Liquid Crystal Polymer), or PBT (abbreviation of Polybutylene Terephthalate), but it is not limited to the above materials as long as it can ensure insulation between the drive coil 7 and the teeth portion 2.
  • PPS abbreviation of Polyphenylene Sulfide
  • LCP abbreviation of Liquid Crystal Polymer
  • PBT abbreviation of Polybutylene Terephthalate
  • the insulating film member 6 includes an interphase insulating portion 16 and a ground insulating portion 15.
  • the insulating film member 6 is formed by folding a flat resin film, and is made of a material that has a restoring force F to its unfolded shape.
  • the interphase insulating portion 16 is formed to cover the outside of the drive coils 7 of the teeth 2 adjacent in the first direction Y, and insulates the adjacent drive coils 7 between the teeth 2 adjacent in the first direction Y.
  • the lengths of the interphase insulating portion 16 in the second direction X and the third direction Z are appropriately set to lengths that cover the outside of the drive coils 7 and reliably prevent contact between the adjacent drive coils 7 between the adjacent teeth 2.
  • the interphase insulating portion 16 is formed to protrude by lengths W1 and W2 on both sides in the third direction Z, as shown in FIG. 7A, in the direction away from the armature core 1 in the third direction Z, beyond the ground insulating portion 15.
  • the interphase insulating portion 16 is formed by folding the third direction Z at an acute angle on the other end side X2 in the second direction X, and is formed of a double layer of resin film. Therefore, at one end side X1 of the interphase insulation part 16 in the second direction X, there is a restoring force F to the expanded shape on both sides in the first direction Y.
  • the ground insulation 15 is formed by extending from one end side X1 of the interphase insulation 16 in the second direction X to both sides in the first direction Y, and is arranged in contact with the slot region 4 side of the core back portion 3, and is formed by being inserted into contact with the adjacent tooth portion 2 in the first direction Y.
  • the ground insulation 15 is located between the insulating frame 5 and the core back portion 3 to insulate the drive coil 7, and ensures a creepage insulation distance necessary to insulate the current flowing from the drive coil 7 along the surface of the insulating frame 5 to the core back portion 3.
  • the ground insulation 15 has first hook portions 17 that clamp both ends of the tooth portion 2 in the third direction Z in order to be inserted into contact with and engage with the adjacent tooth portion 2.
  • the insulating film member 6 is inserted into the adjacent teeth portion 2 at the first hook portion 17 shown in FIG. 7, and the ground insulating portion 15 is held in close contact between the core back portion 3 and the core back side flange portion 12 of the insulating frame 5.
  • the thickness is appropriately selected to ensure a large area and sufficient insulation performance.
  • the insulating film member 6 is formed by folding a single flat film cut into a predetermined shape, but it may be formed by laminating multiple insulating films together.
  • PPS film, PET (abbreviation of polyethylene terephthalate) film, aramid film, etc. are used as the material for the insulating film member 6, but it is not limited to the above materials as long as interphase insulation between adjacent drive coils 7 is ensured.
  • the drive coil 7 and teeth portion 2 are insulated by the insulating frame 5
  • adjacent drive coils 7 are insulated by the interphase insulating portion 16 of the insulating film member 6, and the creeping discharge that flows from the drive coil 7 along the surface of the insulating frame 5 to the core back portion 3 is insulated by the ground insulating portion 15 of the insulating film member 6.
  • the interphase insulating portion 16 of the insulating film member 6 applies a restoring force F to the ground insulating portion 15, tending to expand in both sides in the first direction Y, so the ground insulating portion 15 is held in place by the frictional force generated by contact with the teeth portion 2 and is installed so as not to fall out in the second direction X.
  • the insulating film member 6 is attached to the armature core 1 in a self-supporting state.
  • a method can be considered in which the first hook portion 17 is inserted while fitting into both ends of the teeth portion 2 in the third direction Z.
  • the interphase insulating portion 16 of the two overlapping insulating films may be inserted between adjacent teeth portions 2 while being held completely closed in the first direction Y, until it is positioned at a position where the ground insulating portion 15 and the core back portion 3 abut, and then the interphase insulating portion 16 may be opened on both sides in the first direction Y by the restoring force F, and inserted into the first hook portion 17 and both ends of the teeth portion 2 in the third direction Z.
  • the insulating frame 5 with the drive coil 7 wound around it is inserted from the other end side X2 in the second direction X so that the teeth portion 2 of the armature core 1 passes through the through hole 11 of the insulating frame 5, and the ground insulating portion 15 of each of the two insulating film members 6 on both sides of the teeth portion 2 in the first direction Y is positioned so that it is closely sandwiched between the core back portion 3 of the armature core 1 and the core back side flange portion 12 of the insulating frame 5.
  • the locking grooves 8 of the teeth 2 and the locking claws 14 of the insulating frame 5 fit together, fixing the insulating frame 5 to the teeth 2.
  • the insulating frame 5 with the drive coil 7 wound around it is arranged between the interphase insulating portion 16 of the insulating film member 6 and the teeth 2 adjacent in the first direction Y (Figs. 2, 3, and 4).
  • the insulating film member 6 is inserted into and engaged with the teeth portions 2 adjacent to each other in the first direction Y, so that the insulating film member 6 can be placed on the armature core 1 before the insulating frame 5, facilitating the assembly work of the armature 100. Furthermore, if the insulating film member 6 is damaged during the insertion, it can be easily removed and replaced, facilitating the repair work.
  • the ground insulating portion 15 of the insulating film member 6 is fixed tightly between the core back portion 3 of the armature core 1 and the core back side flange portion 12 of the insulating frame 5, so there is no risk of misalignment or falling off due to vibrations during transportation or subsequent processes, making it possible to provide a highly reliable armature for an electric machine.
  • the insulating frame 5 can also be applied when the insulating frame 5 is integrally molded with the teeth portion 2 in advance using a manufacturing method such as injection molding.
  • the insulating film member 6 can be fixed to the teeth portion 2 before the integral molding.
  • it can also be applied to an armature core having a shoe portion on the other end side X2 in the second direction X of the teeth portion 2. In that case, since the insulating frame 5 cannot be inserted from the second direction X, an insulating frame 5 that is divided in the third direction Z can be used, and the driving coil 7 can be wound after the insulating frame 5 is placed.
  • An armature core a driving coil wound around an insulating frame and disposed on the armature core
  • the armature core is a plurality of teeth portions formed at intervals in a first direction and protruding in a second direction perpendicular to the first direction; a core back portion formed at one end side of the teeth portion in the second direction by connecting the teeth portions adjacent to each other in the first direction and extending in the first direction; a slot region surrounded by the teeth portion and the core back portion
  • the insulating frame is a winding frame portion that covers the teeth portion and the core back portion of the armature core on the slot region side and around which the drive coil is wound; a through hole formed to penetrate in a second direction and in which the teeth portion of the armature core is disposed, the drive coil is installed on each of the teeth portions via the insulating frame, an insulating film member including an interphase insulator disposed between the drive coils adjacent in a first
  • the insulating film member Since the insulating film member is inserted into and engaged with adjacent tooth portions so that it is self-supporting, it is less likely to become misaligned or fall off due to vibrations during transportation or subsequent processes, thereby providing a highly reliable armature for an electric machine and an electric machine. Furthermore, since the insulating film member is inserted and engaged in contact with adjacent tooth portions, the insulating film member can be placed on the armature core before the insulating frame around which the drive coil is wound, making it easier to assemble the armature. Furthermore, if the insulating film member is damaged during insertion into the armature core, repair work can be easily performed.
  • the ground insulator includes a first hook portion that sandwiches the teeth portion at both ends in a third direction perpendicular to the first direction and the second direction. Because the insulating film member is securely inserted into and engaged with adjacent teeth portions and stands on its own, it is less likely to become misaligned or fall off due to vibrations during transportation or subsequent processes, making it possible to provide an armature for an electric machine and an electric machine with even higher reliability.
  • the insulating film member is formed by folding a flat resin film and has a restoring force to a developed shape.
  • the insulating film member can be easily installed on the armature core, further facilitating the assembly work of the armature.
  • the insulating frame and the teeth portion each have a protrusion and a recess that fit into each other, The protrusions fit into the recesses, and the insulating frame is fixed to the teeth.
  • the insulating frame and the armature core By fixing the insulating frame and the armature core, the insulating film member placed therebetween can be fixed with higher reliability.
  • the interphase insulators are formed to protrude further than the ground insulators in a direction away from the armature core in a third direction perpendicular to the first direction and the second direction. This makes it even more difficult for misalignment and falling off to occur due to vibrations during transportation and subsequent processes, and makes it possible to provide an armature for an electric machine and an electric machine with even higher reliability.
  • Fig. 9 is a perspective view showing a state where an insulating film member is installed on the armature core of the armature according to embodiment 2.
  • Fig. 10 is a cross-sectional view showing a state where an insulating film member is installed on the armature core of the armature shown in Fig. 9.
  • Fig. 11 is a top view of the armature core shown in Fig. 9.
  • the armature core 1 has a groove 18 extending in the third direction Z at the corner position where the teeth 2 and the core back 3 abut, which is the base of the teeth 2 (one end side X1 in the second direction X).
  • the ground insulating part 15 of the insulating film member 6 is inserted into the groove 18.
  • the insulating film member 6 is locked so as not to fall out in the second direction X.
  • the first hook 17 of the insulating film member 6 is inserted into the teeth 2 of the armature core 1.
  • the insulating film member 6 is locked so as not to fall out in the third direction Z.
  • the first hook 17 is not inserted into the groove 18.
  • the first hook portion 17 is formed on the ground insulation portion 15, but this is not limited to this. Even in the case of a ground insulation portion 15 that does not have the first hook portion 17, the ground insulation portion 15 is inserted into the groove portion 18, so that the ground insulation portion 15 is inserted in contact with the tooth portion 2 adjacent to the first direction Y, and the same effect as the above embodiment 2 can be achieved.
  • a groove portion is formed at a corner position where the tooth portion and the core back portion come into contact with each other, The ground insulator is inserted into the groove, Since the ground insulating portion of the insulating film member is fitted into and locked in the groove, there is no risk of the insulating film member being displaced in the second direction during assembly, making the assembly of the armature even easier.
  • Fig. 12A is a perspective view showing the configuration of an insulating film member of an armature according to embodiment 3
  • Fig. 12B is a perspective view showing the configuration of an insulating film member of an armature according to embodiment 3.
  • Fig. 13 is a perspective view showing a state in which the insulating film member shown in Fig. 12 is installed on an armature core of an armature according to embodiment 3.
  • the interphase insulating part 16 of the insulating film member 6 is provided with a second hook part 19 that extends to one end side X1 in the second direction X at both ends in the third direction Z of the interphase insulating part 16 and sandwiches the both ends in the third direction Z of the core back part 3.
  • the second hook part 19 is formed so that both sides in the third direction Z protrude by lengths W3 and W4, respectively, beyond the ground insulating part 15 in the direction away from the armature core 1 in the third direction Z, as shown in Fig. 12B, for example. Note that the first hook part 17 shown in the above-mentioned embodiments is not provided.
  • the insulating film member 6 having an interphase insulating portion 16 having a second hook portion 19 and an earth insulating portion 15 not having a first hook portion 17 can be formed by cutting a sheet of planar resin film only at the cut locations A, B, C, and D shown in FIG. 12A, and folding the portion of the resin film corresponding to the other end side X2 in the second direction X of the interphase insulating portion 16 in the third direction Z in a mountain fold, and further folding the portions of the cut locations A, B, C, and D in the third direction Z to form the earth insulating portion 15 and the second hook portion 19.
  • the insulating film member 6 can be easily formed by cutting and folding a sheet of planar resin film only.
  • a sheet of planar resin film can be mountain-folded in the third direction Z at the portion corresponding to the other end X2 of the interphase insulation section 16 in the second direction X so that the resin film overlaps, and then cuts A and B shown in FIG. 12A are simultaneously cut, and cuts C and D are simultaneously cut, and then cuts A, B, C, and D are valley-folded in the third direction Z to form the film.
  • the second hook portion 19 of the insulating film member 6 thus formed is inserted into the core back portion 3 of the armature core 1.
  • the insulating film member 6 is locked so as not to fall out in the third direction Z.
  • the armature core 1 has a groove portion 18, as in the second embodiment, and the ground insulating portion 15 is inserted into the groove portion 18.
  • the insulating film member 6 is locked so as not to fall out in the second direction X.
  • the groove portion 18 is provided, but this is not limited thereto, and even if the groove portion 18 is not provided, the second hook portion 19 of the insulating film member 6 is inserted into the core back portion 3 of the armature core 1. The insulating film member 6 is then locked so as not to fall off in the third direction Z.
  • the ground insulation portion 15 is formed by extending from one end side X1 in the second direction X of the interphase insulation portion 16 to both sides in the first direction Y, and is arranged in contact with the slot region 4 side of the core back portion 3, and is formed in contact with adjacent teeth portions 2 in the first direction Y. Therefore, the ground insulation portion 15 is held between adjacent teeth portions 2 by the frictional force generated between the teeth portions 2, and is formed to be self-supporting. Therefore, the insulating film member 6 can be installed on the armature core 1 more stably, and the same effect as in the above embodiment 3 can be achieved.
  • the first hook portion 17 may be further provided and configured to be inserted into adjacent teeth portions 2 in the first direction Y.
  • the insulating film member 6 when forming the insulating film member 6, it cannot be formed by only making a simple cut, but it can be inserted into both adjacent teeth portions 2 in the first direction Y and the core back portion 3 between adjacent teeth portions 2 in the first direction Y, so that the insulating film member 6 can be more stably installed on the armature core 1, and the same effect as the above embodiment 3 can be achieved.
  • the same effect as in the third embodiment can be achieved.
  • An armature core a driving coil wound around an insulating frame and disposed on the armature core
  • the armature core is a plurality of teeth portions formed at intervals in a first direction and protruding in a second direction perpendicular to the first direction; a core back portion formed at one end side of the teeth portion in the second direction by connecting the teeth portions adjacent to each other in the first direction and extending in the first direction; a slot region surrounded by the teeth portion and the core back portion
  • the insulating frame is a winding frame portion that covers the teeth portion and the core back portion of the armature core on the slot region side and around which the drive coil is wound; a through hole formed to penetrate in a second direction and in which the teeth portion of the armature core is disposed, the drive coil is installed on each of the teeth portions via the insulating frame, the interphase
  • the interphase insulator is formed to protrude beyond the ground insulator in a direction away from the armature core in a third direction
  • the second hook portion is formed to protrude beyond the ground insulator in a direction away from the armature core in the third direction
  • Fig. 15A is a perspective view showing the configuration of an insulating film member of an armature according to embodiment 4
  • Fig. 15B is a perspective view showing the configuration of an insulating film member of an armature according to embodiment 4.
  • Fig. 16 is a perspective view showing a state in which the insulating film member shown in Fig. 15 is installed on the armature core of an armature according to embodiment 4.
  • Fig. 17 is a cross-sectional view taken along line K-K showing the configuration of the armature shown in Fig. 16.
  • the same parts as those in the above-mentioned embodiments are given the same reference numerals and the description thereof will be omitted. The description will focus on the parts that are different from those in the above-mentioned embodiments, and the similar parts will be omitted as appropriate.
  • the insulating film member 6 has a third hook portion 20 formed by protruding a part of the ground insulating portion 15 in the first direction Y.
  • the armature core 1 has a second groove portion 21 formed at a corner position formed by the teeth portion 2 and the core back portion 3, except at both ends in the third direction Z. Therefore, as shown in FIG. 16, the armature core 1 has a second groove portion 21 not formed at both ends in the third direction Z, at a corner position formed by the teeth portion 2 and the core back portion 3.
  • the second groove portion 21 does not penetrate in the third direction Z, but is appropriately formed to match the position of the third hook portion 20 of the insulating film member 6.
  • the third hook portion 20 is inserted into the second groove portion 21. Therefore, the insulating film member 6 is retained so as not to fall out in the second direction X and the third direction Z.
  • the interphase insulating portion 16 of the two overlapping insulating films may be held completely closed in the first direction Y while being inserted between adjacent teeth portions 2 until it is positioned at a position where the ground insulating portion 15 and the core back portion 3 abut, after which the interphase insulating portion 16 may be opened on both sides in the first direction Y by the restoring force F, and the third hook portion 20 may be inserted and positioned in the second groove portion 21.
  • the third hook portion 30 may be positioned in the second groove portion 21 while preventing the third hook portion 20 from interfering with the adjacent teeth portion 2.
  • the third hook portion 20 is provided at one location on one side of the ground insulation portion 15 near the center in the third direction Z, but this is not limited to this, and the position and length in the third direction Z may be changed, and multiple third hook portions, such as two, may be provided on one side of the ground insulation portion 15, and the same effect as in the fourth embodiment can be achieved.
  • a second groove portion is formed at a corner position where the tooth portion and the core back portion are in contact with each other, and at a portion of the armature core other than both ends in a third direction perpendicular to the first direction and the second direction;
  • the ground insulation portion includes a third hook portion disposed in the second groove portion, This makes it even more difficult for misalignment and falling off to occur due to vibrations during transportation and subsequent processes, and thus makes it possible to provide an armature for an electric machine and an electric machine with even higher reliability.
  • Fig. 18A is a perspective view showing the configuration of an insulating film member of an armature according to embodiment 5
  • Fig. 18B is a perspective view showing the configuration of an insulating film member of an armature according to embodiment 5.
  • Fig. 19 is a perspective view showing a state in which the insulating film member shown in Fig. 18 is installed on an armature core of an armature according to embodiment 5.
  • Fig. 20 is a partially enlarged top view of the armature core shown in Fig. 19.
  • the interphase insulating part 16 of the insulating film member 6 is provided with a second hook part 19 that extends to one end side X1 in the second direction X at both ends of the interphase insulating part 16 in the third direction Z and sandwiches both ends of the core back part 3 in the third direction Z.
  • the second hook part 19 is formed to protrude further than the ground insulating part 15 in the direction away from the armature core 1 in the third direction Z, as in the third embodiment.
  • the second hook part 19 is provided with a protrusion part 190 whose end on the one end side X1 extends in the direction approaching the armature core 1 in the third direction Z.
  • the core back portion 3 of the armature core 1 has a third groove portion 23 formed on one end side X1 and extending in the third direction Z.
  • the protrusion portion 190 of the second hook portion 19 of the insulating film member 6 is inserted into the third groove portion 23.
  • the insulating film member 6 is retained so as not to fall out in the second direction X and the third direction Z.
  • the interphase insulating portion 16 of the two overlapping insulating films is kept completely closed in the first direction Y while being inserted between the adjacent teeth 2, and after being positioned to a position where the ground insulating portion 15 and the core back portion 3 abut, the interphase insulating portion 16 is opened on both sides in the first direction Y by the restoring force F, and the second hook portion 19 may be inserted from the opening 230 (see FIG. 20) that opens on the other end side X2 of the third groove portion 23.
  • the protrusion 190 of the second hook portion 19 can be positioned in a wide portion in the first direction Y on one end side X1 of the third groove portion 23 while preventing the second hook portion 19 from interfering with the adjacent teeth 2. It is also possible to form the second groove portion 21 from both end faces to partway toward the center of the core back portion 3 in the third direction Z.
  • a third groove portion is formed on an end surface of the core back portion in a third direction;
  • the second hook portion of the interphase insulator is inserted into the third groove portion, This makes it even more difficult for misalignment and falling off to occur due to vibrations during transportation and subsequent processes, and thus makes it possible to provide an armature for an electric machine and an electric machine with even higher reliability.
  • each of the above embodiments an example has been shown in which the core back portion of the armature core is formed in a straight line and multiple teeth are formed on the straight core back portion at a predetermined interval, but this is not limited to this. Even if the core back portion is formed in a curved or arc shape and the teeth are formed on the core back portion at a pre-set interval, each of the above embodiments can be appropriately applied and similar effects can be achieved. Also, while the explanation has been centered on the case where there are three teeth, the number of teeth can be appropriately set as needed. Also, while the explanation has been centered on the case where the armature core has multiple teeth that are integrated, it may also be possible to connect the divided pieces as shown in Figure 14 below.
  • the core back portion 3 of the armature core 1 is annular, and the teeth portions 2 protrude toward the center of the ring (the other end side X2 in the second direction X), and are radially arranged at preset intervals in the circumferential direction (first direction Y).
  • the third direction Z corresponds to the axial direction of the rotation shaft of the rotary electric machine.
  • An armature core An armature core; a driving coil wound around an insulating frame and disposed on the armature core,
  • the armature core is a plurality of teeth portions formed at intervals in a first direction and protruding in a second direction perpendicular to the first direction; a core back portion formed at one end side of the teeth portion in the second direction by connecting the teeth portions adjacent to each other in the first direction and extending in the first direction; a slot region surrounded by the teeth portion and the core back portion,
  • the insulating frame is a winding frame portion that covers the teeth portion and the core back portion of the armature core on the slot region side and around which the drive coil is wound; a through hole formed to penetrate in a second direction and in which the teeth portion of the armature core is disposed, the drive coil is installed on each of the teeth portions via the insulating frame,
  • An armature for an electric machine comprising: an insulating film member having an interphase insulation portion installed between the drive coils adjacent in
  • (Appendix 2) An armature for an electric machine as described in Appendix 1, wherein the ground insulation portion has a first hook portion that clamps the tooth portion at both ends in a third direction perpendicular to the first and second directions.
  • (Appendix 3) a groove portion is formed at a corner position where the tooth portion and the core back portion come into contact with each other, 3.
  • (Appendix 4) 4. The armature of an electric machine according to claim 1, wherein the interphase insulator includes second hook portions that sandwich the core back portion at both ends in a third direction perpendicular to the first direction and the second direction.
  • An armature core ; a driving coil wound around an insulating frame and disposed on the armature core,
  • the armature core is a plurality of teeth portions formed at intervals in a first direction and protruding in a second direction perpendicular to the first direction; a core back portion formed at one end side of the teeth portion in the second direction by connecting the teeth portions adjacent to each other in the first direction and extending in the first direction; a slot region surrounded by the teeth portion and the core back portion,
  • the insulating frame is a winding frame portion that covers the teeth portion and the core back portion of the armature core on the slot region side and around which the drive coil is wound; a through hole formed to penetrate in a second direction and in which the teeth portion of the armature core is disposed, the drive coil is installed on each of the teeth portions via the insulating frame,
  • An armature for an electric machine comprising: an interphase insulation portion arranged between adjacent drive coils in a first direction and having second hook portions that sandwich the core

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)
PCT/JP2023/044178 2023-03-07 2023-12-11 電気機械の電機子および電気機械 WO2024185249A1 (ja)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016086565A (ja) * 2014-10-27 2016-05-19 トヨタ自動車株式会社 回転電機のステータ
JP2019030176A (ja) * 2017-08-02 2019-02-21 株式会社豊田自動織機 回転電機のステータ
JP2019088131A (ja) * 2017-11-08 2019-06-06 トヨタ自動車株式会社 回転電動機
JP2022112344A (ja) * 2021-01-21 2022-08-02 愛知電機株式会社 相間絶縁部材、固定子および電動機

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016086565A (ja) * 2014-10-27 2016-05-19 トヨタ自動車株式会社 回転電機のステータ
JP2019030176A (ja) * 2017-08-02 2019-02-21 株式会社豊田自動織機 回転電機のステータ
JP2019088131A (ja) * 2017-11-08 2019-06-06 トヨタ自動車株式会社 回転電動機
JP2022112344A (ja) * 2021-01-21 2022-08-02 愛知電機株式会社 相間絶縁部材、固定子および電動機

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