Electric machine armature and electric machine

Abstract

In the present invention, an armature core (1) comprises a plurality of teeth parts (2), a core back part (3), and a slot region (4). An insulation frame (5) comprises a winding frame part (9) around which a drive coil (7) is wound. The drive coil (7) is placed on each of the plurality of teeth parts (2) via the insulation frame (5). The drive coil comprises an insulation film member (6) that includes: an interphase insulation part (16) that is disposed between drive coils (7) which are adjacent in a first direction (Y); and a ground insulation part (15) that is formed extending in the first direction (Y) from one end side (X1) in a second direction (X) of the interphase insulation part (16), and that is disposed in contact with a slot region (4) side of the core back part (3) and is fitted and inserted in the teeth parts (2) which are adjacent in the first direction (Y).

Description

Armature of electric machine and electric machine

[0001] The present disclosure relates to an armature for an electric machine and to an electric machine.

[0002] Conventional electric machine armatures and electric machines are assembled by placing insulating materials on the teeth of an armature core made by punching steel sheets into a predetermined shape and then laminating them, and then winding drive coils on top of the insulating materials. If the drive coils are wound unevenly due to manufacturing variations, it may not be possible to ensure sufficient distance between the drive coils on adjacent teeth. Although the drive coils are coated with an insulating coating, if the potential difference between the coils is large, the insulating coating alone may not be enough to maintain insulation. Additionally, since holes may be present in the insulating coating 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).

[0003] JP 2019-180170 A

[0004] Conventional electric machine armatures and electric machines have the problem that assembly is difficult because the insulating film must be inserted and positioned in the narrow space formed by the adjacent drive coil, insulating member, and core back portion of the armature. Also, if the insulating film is damaged during insertion, repair work is difficult. Furthermore, because the insulating film is positioned in a space that can be inserted, it is not possible to restrict its movement in the up-down or forward-backward directions. This can lead to misalignment or falling off due to vibrations during transportation or downstream processes, which can result in the failure to ensure interphase insulation.

[0005] The present disclosure discloses a technique for solving the above-described problems, and aims to provide an armature for an electric machine and an electric machine that are highly reliable and that facilitate assembly work and more reliably ensure inter-phase insulation between drive coils.

[0006] The armature of an electric machine disclosed herein comprises: an armature core; and a drive coil wound around an insulating frame and installed on the armature core; wherein the armature core has: a plurality of teeth formed at intervals in a first direction and projecting in a second direction perpendicular to the first direction; a core back portion formed at one end side of the teeth in the second direction and extending in the first direction by connecting the teeth portions adjacent to each other in the first direction; and a slot region surrounded by the teeth portions and the core back portion; and the insulating frame has: a winding frame portion covering the teeth portions of the armature core and the slot region side of the core back portion, and around which the drive coil is wound; and a through hole formed to penetrate in the second direction and in which the teeth portions of the armature core are disposed; and the drive coil is installed on each of the plurality of teeth via the insulating frame, The insulating film member includes an interphase insulating portion installed between the drive coils adjacent in the first direction, and an earth insulating portion formed by extending in the first direction from one end side of the interphase insulating portion in the second direction, arranged in contact with the slot region side of the core back portion, and inserted into the tooth portion adjacent in the first direction.The armature of an electric machine disclosed herein also includes an armature core, and a drive coil wound around an insulating frame and installed on the armature core, wherein the armature core has: a plurality of teeth formed at intervals in a first direction and projecting in a second direction perpendicular to the first direction; a core back portion formed at one end side of the teeth in the second direction and extending in the first direction by connecting the teeth portions adjacent to each other in the first direction; and a slot region surrounded by the teeth portions and the core back portion; the insulating frame has: a winding frame portion covering the teeth portions of the armature core and the slot region side of the core back portion, and around which the drive coil is wound; and a through hole formed to penetrate in the second direction and in which the teeth portions of the armature core are disposed; and the drive coil is installed on each of the plurality of teeth via the insulating frame, the drive coils being adjacent in the first direction, and having second hook portions that sandwich the core back portion at both ends in a third direction perpendicular to the first and second directions, and an insulating film member having ground insulation formed by extending in the first direction from one end side of the interphase insulation in the second direction, the interphase insulation being disposed in contact with the slot region side of the core back portion and in contact with the teeth portion adjacent in the first direction. The electric machine of the present disclosure also includes an armature of the electric machine described above, and a field magnet disposed opposite the tip portions of the teeth portion of the armature core on the other end side in the second direction.

[0007] According to the electric machine armature and electric machine of the present disclosure, assembly work can be facilitated, and inter-phase insulation between drive coils can be more reliably ensured, thereby improving reliability.

[0008] 1 is a front view showing the configuration of an electric machine according to embodiment 1. 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. 3. FIG. 4 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 an 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 an insulating film member of the armature shown in FIG. 2, and FIG. 7B is a perspective view showing the configuration of an insulating film member of the armature shown in FIG. 2. FIG. 5 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. 6B is a cross-sectional view showing a state in which an insulating film member is installed on the armature core of the armature according to embodiment 2. FIG. 9 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. 10. 12A is a perspective view showing the configuration of an insulating film member of an armature according to embodiment 3, and FIG. 12B is a perspective view showing the configuration of an insulating film member of an armature according to embodiment 3.

[0046] FIG. 12B 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.

[0047] FIG. 15A is a perspective view showing the configuration of an insulating film member of an armature according to embodiment 4, and FIG. 15B is a perspective view showing the configuration of an insulating film member of an armature according to embodiment 4.

[0048] FIG. 15B is a perspective view showing a state in which the insulating film member shown in FIG. 15 is installed on an armature core of an armature according to embodiment 4.

[0049] FIG. 16 is a cross-sectional view taken along line K-K showing the configuration of the armature shown in FIG. 16.

[0050] FIG. 18A is a perspective view showing the configuration of an insulating film member of an armature according to embodiment 5, and FIG. 18B is a perspective view showing the configuration of an insulating film member of an armature according to embodiment 5.

[0051] 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.

[0052] FIG. 19 is an enlarged top view of a portion of the armature core shown in FIG.

[0009] Embodiment 1. Fig. 1 is a front view showing the configuration of an electric machine according to embodiment 1. 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.

[0010] 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, and 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.

[0011] As shown in Fig. 1, the electric machine 1000 includes an armature 100 and a field 200. The field 200 includes magnets 201 that form magnetic poles and a yoke 202 for mounting the magnets 201. The magnets 201 are attached to the yoke 202 by a joining member such as an adhesive, a pressure-sensitive adhesive, or an adhesive tape. The field 200 is configured such that a plurality of magnets 201 with different magnetic poles are alternately arranged at predetermined intervals in a first direction Y on the surface of the yoke 202. The armature 100 and the field 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.

[0012] 1 and 2, the armature 100 includes 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 the drive coil 7 is shown in simplified form in each figure.

[0013] In the following explanation, the directions will be described as the first direction Y shown above, the second direction X which is a direction perpendicular to the first direction Y extending from the armature 100 toward the field 200, and the third direction Z which is a direction perpendicular to the first direction Y and the second direction X.

[0014] 2 , the armature core 1 is formed by stacking a plurality of electromagnetic steel sheets in the third direction Z. The armature core 1 is formed by holding and fixing the plurality of electromagnetic steel sheets in the third direction Z by joining the electromagnetic steel sheets together using caulking, adhesive, pressure sensitive adhesive, or the like.

[0015] As shown in Fig. 5, 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 at predetermined intervals in the first direction Y. The side surfaces of the teeth 2 are provided with locking grooves 8 as recesses that fit with locking claws 14 as protrusions, which will be described later. The core back 3 is formed at one end X1 of the teeth 2 in the second direction X, extending in the first direction Y to connect the teeth 2 that are adjacent in the first direction Y (in the following description, "adjacent in the first direction Y" may be abbreviated to "adjacent"). A slot region 4 is formed, surrounded by the teeth 2 and the core back 3, and a drive coil 7 is housed in the slot region 4.

[0016] As shown in Figure 6, 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 extend from the winding frame portion 9 and serve as walls for storing the drive coil 7 without it falling over. The core-back side flange portion 12 also contributes to insulation between the drive coil 7 and the core-back portion 3.

[0017] The base 10 has grooves formed therein for guiding the lead-in and end portions of the drive coil 7, and may also have a function of holding terminals for connecting the drive coil 7, although this is not shown. Note that while the base 10 is formed on only one end face in the third direction Z in FIG. 6 , the base 10 may be formed on both end faces in the third direction Z. The through holes 11 are formed to penetrate in the second direction X, and the teeth 2 are disposed therein. The locking claws 14 are formed on the inner circumferential surface of the through holes 11, and as shown in FIG. 4 , they fit into the locking grooves 8 of the teeth 2 to fix the insulating frame 5 to the teeth 2.

[0018] Regarding the method of fixing the insulating frame 5 to the teeth 2, the figure shows an example in which one locking claw 14 is provided on each inner circumferential 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 one locking claw on only one side of the inner circumferential surface of the through hole 11 as shown above. It is also possible to provide one locking claw on the inner circumferential surface of the through hole 11 facing the third direction Z. Naturally, the locking grooves 8 of the teeth 2 are appropriately formed at locations corresponding to the locking claws 14.

[0019] In addition, other possible methods of fixing the insulating frame 5 to the teeth portion 2 besides the locking claws 14 and locking grooves 8 include a method of fixing the insulating frame 5 to the teeth portion 2 by solidifying it with varnish or molded resin, or a method of molding the insulating frame 5 integrally with the teeth portion 2 in advance using a manufacturing method such as injection molding and fixing it.

[0020] 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 is not limited to the above materials as long as it can ensure insulation between the drive coil 7 and the teeth portion 2.

[0021] 4 and 7, the insulating film member 6 includes an interphase insulator 16 and a ground insulator 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.

[0022] The interphase insulator 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 from each other between the teeth 2 adjacent in the first direction Y. The lengths of the interphase insulator 16 in the second direction X and the third direction Z are appropriately set to 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 insulator 16 is formed to protrude by lengths W1 and W2 on both sides in the third direction Z beyond the ground insulator 15 in the direction away from the armature core 1 in the third direction Z, as shown in FIG. 7A . The interphase insulator 16 is formed by folding the other end X2 in the second direction X in the third direction Z at an acute angle, and is formed of a double-layered resin film. Therefore, at one end side X1 of the interphase insulator 16 in the second direction X, a restoring force F to the expanded shape is exerted on both sides in the first direction Y.

[0023] The ground insulators 15 are formed by extending from one end side X1 of the interphase insulators 16 in the second direction X to both sides in the first direction Y, and are arranged in contact with the slot region 4 side of the core back portion 3, and are formed by being inserted into contact with adjacent teeth 2 in the first direction Y. Thus, the ground insulators 15 are located between the insulating frame 5 and the core back portion 3 to insulate the drive coil 7 and ensure 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 insulators 15 have first hooks 17 that clamp both ends of the teeth 2 in the third direction Z to be inserted into contact with and locked to adjacent teeth 2.

[0024] Therefore, the insulating film member 6 is inserted into the adjacent tooth portion 2 with the first hook portion 17 shown in Figure 7, and the ground insulating portion 15 is held tightly sandwiched between the core back portion 3 and the core back side flange portion 12 of the insulating frame 5.

[0025] The thinner the insulating film member 6, the smaller the area occupied by the drive coil 7 in the slot region 4 can be, and the larger the area occupied by the drive coil 7 can be. However, the thickness must be thick enough to ensure sufficient insulation performance. Therefore, the thickness is appropriately selected to ensure a large area occupied by the insulating film member 6 and sufficient insulation performance.

[0026] Although the insulating film member 6 is shown as an example formed by folding a single flat film cut into a predetermined shape, it may also be formed by laminating multiple insulating films together. Generally, PPS film, PET (abbreviation for polyethylene terephthalate), aramid film, etc. are used as the material for the insulating film member 6, but the material is not limited to these as long as it can ensure interphase insulation between adjacent drive coils 7.

[0027] With the above-described configuration, insulation is ensured between the drive coil 7 and the teeth portion 2 by the insulating frame 5, between adjacent drive coils 7 by the interphase insulating portion 16 of the insulating film member 6, and against surface discharge that flows from the drive coil 7 along the surface of the insulating frame 5 to the core back portion 3 by the ground insulating portion 15 of the insulating film member 6.

[0028] Next, a method for assembling the armature 100 of the first embodiment configured as described above will be described. First, the drive coil 7 is wound around the winding frame portion 9 of the insulating frame 5. Next, the insulating film member 6 is inserted into the slot region 4 between adjacent teeth 2 of the armature core 1 from the other end side X2 in the second direction X. Then, the ground insulator 15 of the insulating film member 6 is positioned to abut against the core back portion 3 of the armature core 1. Furthermore, the first hook portions 17 of the insulating film member 6 are inserted and contact the teeth 2 on both sides adjacent to each other in the first direction Y, and are locked to prevent them from slipping out in the third direction Z ( FIG. 8 ).

[0029] Furthermore, the interphase insulators 16 of the insulating film member 6 apply a restoring force F that tends to expand on both sides in the first direction Y to the ground insulators 15, so the ground insulators 15 are held in place by frictional force generated by contact with the teeth 2 and are installed so as not to fall out in the second direction X. For this reason, the insulating film member 6 is attached to the armature core 1 in a self-supporting state, as shown in Figure 8. Furthermore, when inserting the insulating film member 6 from the other end side X2 in the second direction X, it is possible to insert the first hooks 17 while fitting them into both ends of the teeth 2 in the third direction Z.

[0030] Alternatively, the interphase insulating portion 16 of the two overlapping insulating films may be held completely closed in the first direction Y and inserted between adjacent tooth portions 2 until it reaches 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 both ends of the first hook portion 17 and the tooth portion 2 in the third direction Z.

[0031] In this way, the insulating film member 6 bent at an acute angle at the other end side X2 in the second direction X has a restoring force F at one end side X1 in the second direction X that tends to expand to both sides in the first direction Y, so either mounting method is possible. The insulating film member 6 is similarly inserted from the other end side X2 in the second direction X into the slot region 4 between the other teeth 2 adjacent in the first direction Y.

[0032] Next, the insulating frame 5 around which the drive coil 7 is wound is inserted from the other end side X2 in the second direction X so that the tooth portion 2 of the armature core 1 passes through the through hole 11 of the insulating frame 5, and the ground insulating portions 15 of each of the two insulating film members 6 on both sides of the tooth portion 2 in the first direction Y are positioned so as to be 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.

[0033] When arranged in this manner, the locking grooves 8 of the teeth 2 and the locking claws 14 of the insulating frame 5 fit together, thereby fixing the insulating frame 5 to the teeth 2. In addition, the insulating frame 5 around which the drive coil 7 is wound is arranged between the teeth 2 and the interphase insulating portions 16 of the insulating film members 6 adjacent to each other in the first direction Y ( FIGS. 2 , 3 , and 4 ).

[0034] The method described above is one example. As another method, the insulating film member 6 may be installed, followed by the insulating frame 5, which may then be positioned on the armature core 1 in the positional relationship described above, and then the drive coil 7 may be wound around the winding frame portion 9.

[0035] In the armature of the electric machine according to the first embodiment configured as described above, the insulating film members 6 are inserted into and locked into contact with the teeth 2 adjacent to each other in the first direction Y, and therefore the insulating film members 6 can be placed on the armature core 1 before the insulating frame 5, facilitating the assembly of the armature 100. Furthermore, if the insulating film members 6 are damaged during the insertion, they can be easily removed and replaced, facilitating repair work.

[0036] In addition, since the ground insulating portion 15 of the insulating film member 6 is tightly sandwiched and fixed between the core back portion 3 of the armature core 1 and the core back side flange portion 12 of the insulating frame 5, there is no concern that it will become displaced or fall off due to vibrations during transportation or later processes, and a highly reliable armature for an electric machine can be provided.

[0037] This method can also be applied to a case where the insulating frame 5 is integrally molded with the teeth 2 in advance by a manufacturing method such as injection molding. In this case, the insulating film member 6 can be fixed to the teeth 2 before the integral molding. This method can also be applied to an armature core having a shoe portion on the other end side X2 of the teeth 2 in the second direction X. In this case, since the insulating frame 5 cannot be inserted from the second direction X, an insulating frame 5 divided in the third direction Z can be used, and the drive coil 7 can be wound after the insulating frame 5 is placed.

[0038] According to the armature of the electric machine of the first embodiment configured as described above, the armature of the electric machine includes: an armature core; and a drive coil wound around an insulating frame and installed on the armature core; wherein the armature core has: a plurality of teeth portions formed at intervals in a first direction and projecting in a second direction perpendicular to the first direction; a core back portion formed at one end side of the teeth portions in the second direction and extending in the first direction to connect the teeth portions adjacent to each other in the first direction; and a slot region surrounded by the teeth portions and the core back portion; the insulating frame has: a winding frame portion covering the teeth portions of the armature core and the slot region side of the core back portion, and around which the drive coil is wound; and a through hole formed to penetrate in the second direction and in which the teeth portions of the armature core are disposed; and the drive coil is installed on each of the plurality of teeth portions via the insulating frame, The electric machine of the first embodiment includes an insulating film member having an interphase insulator disposed between the drive coils adjacent in the first direction, and an insulating film member extending in the first direction from one end of the interphase insulator in the second direction, the insulating film member being disposed in contact with the slot region side of the core back portion and fitted into the teeth adjacent in the first direction. Furthermore, the electric machine of the first embodiment configured as described above includes the armature of the electric machine described above, and a field magnet disposed opposite the tips of the teeth on the other end of the teeth of the armature core in the second direction. Therefore, since the insulating film member is fitted and locked into the adjacent teeth and is self-supporting, it is less likely to become displaced or fall off due to vibrations during transportation or subsequent processes, and a highly reliable armature and electric machine can be provided. Furthermore, since the insulating film member is fitted and locked into the adjacent teeth, the insulating film member can be placed on the armature core before the insulating frame around which the drive coil is wound, facilitating the assembly of the armature. Furthermore, if the insulating film member is damaged during insertion into the armature core, repair work can be easily performed.

[0039] Furthermore, according to the armature of the electric machine of this embodiment 1, the ground insulator is provided with first hook portions that clamp the tooth portion at both ends in a third direction that is perpendicular to the first and second directions, so that the insulating film member is securely inserted into and locked onto adjacent tooth portions and stands on its own, making it even less likely that misalignment or falling off will occur due to vibrations during transportation or subsequent processes, and it is possible to provide an armature of an electric machine and an electric machine that are even more reliable.

[0040] Furthermore, according to the armature of the electric machine of the first embodiment, the insulating film member is formed by folding a flat resin film and has a restoring force to its unfolded shape. This simplifies the installation of the insulating film member on the armature core, further facilitating the assembly work of the armature.

[0041] Furthermore, according to the armature of the electric machine of this embodiment 1, the insulating frame and the tooth portion each have a convex portion and a concave portion that fit into each other, and the convex portion fits into the concave portion to fix the insulating frame to the tooth portion.Therefore, by fixing the insulating frame and the armature core, the insulating film member placed between them can be fixed more reliably.

[0042] Furthermore, according to the armature of the electric machine of this embodiment 1, the ground insulators are formed in contact with the tooth portions adjacent to each other in the first direction, which makes it even less likely that misalignment or falling off will occur due to vibrations during transportation and subsequent processes, and it is possible to provide an armature of an electric machine and an electric machine that are even more reliable.

[0043] Furthermore, according to the armature of the electric machine of the first embodiment, 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 and second directions. This makes it even less likely that misalignment or falling off will occur due to vibrations during transportation or later processes, and makes it possible to provide an armature of an electric machine and an electric machine with even higher reliability.

[0044] Embodiment 2. Fig. 9 is a perspective view showing a state in which an insulating film member is installed on the armature core of an armature according to embodiment 2. Fig. 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. 11 is a top view of the armature core shown in Fig. 9.

[0045] In the figures, parts similar to those in the first embodiment are denoted by the same reference numerals and omitted. The following description will focus on differences from the first embodiment, and similar parts will be omitted as appropriate. As shown in FIG. 11 , the armature core 1 has grooves 18 extending in the third direction Z at the bases of the teeth 2 (one end X1 in the second direction X), i.e., at corners where the teeth 2 and the core back 3 abut. As shown in FIGS. 9 and 10 , the ground insulators 15 of the insulating film member 6 are fitted into the grooves 18. This prevents the insulating film member 6 from slipping out in the second direction X. Similarly to the first embodiment, the first hooks 17 of the insulating film member 6 are fitted into the teeth 2 of the armature core 1. This prevents the insulating film member 6 from slipping out in the third direction Z. The first hooks 17 are not inserted into the grooves 18.

[0046] In the above-mentioned embodiment 2, an example is shown in which 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 formed, since the ground insulation portion 15 is inserted into the groove portion 18, the ground insulation portion 15 is inserted and contacts the tooth portion 2 adjacent to it in the first direction Y, and the same effect as in the above-mentioned embodiment 2 can be achieved.

[0047] The armature of the electric machine of embodiment 2 configured as described above achieves the same effects as embodiment 1 described above, and also has grooves formed at the corner positions where the tooth portions and the core back portions abut, and the ground insulators are inserted into the grooves, and the ground insulators of the insulating film members are inserted into and locked into the grooves, so there is no concern that the insulating film members will shift in the second direction during assembly, making the assembly of the armature even easier.

[0048] Embodiment 3. Fig. 12A is a perspective view showing the configuration of an insulating film member of an armature according to embodiment 3, and 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 the armature core of the armature according to embodiment 3.

[0049] In the figures, parts similar to those in the above-described embodiments are denoted by the same reference numerals and their description will be omitted. The following description will focus on differences from the above-described embodiments, and similar parts will be omitted where appropriate. As shown in FIGS. 12 and 13 , the interphase insulator 16 of the insulating film member 6 includes second hooks 19 extending toward one end X1 in the second direction X at both ends of the interphase insulator 16 in the third direction Z and sandwiching the core back portion 3 from both ends in the third direction Z. The second hooks 19 are formed to protrude beyond the ground insulator 15 by lengths W3 and W4, respectively, in the direction away from the armature core 1 in the third direction Z, as shown in FIG. 12B . The present embodiment does not include the first hooks 17 described in the above-described embodiments.

[0050] The insulating film member 6 having such interphase insulators 16 having second hooks 19 and ground insulators 15 without first hooks 17 can be formed by cutting a single flat resin film only at cut locations A, B, C, and D shown in Figure 12A, mountain-folding the resin film in the third direction Z at a location corresponding to the other end X2 of interphase insulator 16 in the second direction X, and then valley-folding the areas at cut locations A, B, C, and D in the third direction Z to form ground insulators 15 and second hooks 19. In this way, the insulating film member 6 can be easily formed by cutting and bending a single flat resin film.

[0051] Alternatively, as another procedure, a flat resin film can be mountain-folded in the third direction Z at a location corresponding to the other end X2 of the interphase insulation part 16 in the second direction X, so that the resin film overlaps, and then cuts A and B shown in FIG. 12A simultaneously, and then cuts C and D simultaneously, and then valley-folds the portions at cuts A, B, C, and D in the third direction Z to form the film.

[0052] The second hook portions 19 of the insulating film member 6 thus formed are fitted into and inserted into the core back portion 3 of the armature core 1. This locks the insulating film member 6 so that it does not fall off in the third direction Z. The armature core 1 also has grooves 18, as in the second embodiment, into which the ground insulators 15 are fitted. This locks the insulating film member 6 so that it does not fall off in the second direction X.

[0053] Although the third embodiment has been described with reference to an example in which the groove 18 is provided, the present invention is not limited to this, and even if the groove 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.

[0054] Furthermore, the ground insulators 15 are formed by extending from one end side X1 of the interphase insulators 16 in the second direction X to both sides in the first direction Y, and are arranged in contact with the slot region 4 side of the core back portion 3, and are formed in contact with adjacent teeth 2 in the first direction Y. Therefore, the ground insulators 15 are held between adjacent teeth 2 by frictional forces generated between them, and are formed to be self-supporting. This allows the insulating film member 6 to be installed on the armature core 1 more stably, and the same effects as those of the third embodiment can be achieved.

[0055] Furthermore, in the third embodiment, an example has been shown in which the first hook portion 17 is not provided, but the first hook portion 17 may also be provided as in the above-described embodiments, and configured to be fitted and inserted between the teeth 2 adjacent in the first direction Y. In this case, compared to the third embodiment, when forming the insulating film member 6, it cannot be formed by simply cutting, but it can be fitted and inserted between both the teeth 2 adjacent in the first direction Y and the core back portion 3 between the teeth 2 adjacent in the first direction Y, which allows the insulating film member 6 to be more stably installed on the armature core 1 and provides the same effects as the third embodiment.

[0056] Naturally, even if the insulating film member 6 includes the first hook portion 17 and the second hook portion 19 and the armature core 1 does not include the groove portion 18, the same effect as that of the third embodiment can be achieved.

[0057] The armature of the electric machine according to the third embodiment configured as described above provides the same effects as those of the above embodiments, and also provides an armature for an electric machine including: an armature core; and a drive coil wound around an insulating frame and installed on the armature core, wherein the armature core has: a plurality of teeth portions formed at intervals in a first direction and formed to protrude in a second direction perpendicular to the first direction; a core back portion formed at one end side of the teeth portions in the second direction to connect the teeth portions adjacent to each other in the first direction and extend in the first direction; and a slot region surrounded by the teeth portions and the core back portion, and the insulating frame has: a winding frame portion covering the teeth portions of the armature core and the slot region side of the core back portion, and around which the drive coil is wound; and a through hole formed to penetrate in the second direction and in which the teeth portions of the armature core are disposed, and the drive coil is installed on each of the plurality of teeth portions via the insulating frame, The insulating film member includes an interphase insulating portion that is installed between adjacent drive coils in a first direction and has second hook portions that sandwich the core back portion at both ends in a third direction that is perpendicular to the first and second directions, and an insulating film member that is formed by extending from one end side of the interphase insulating portion in the second direction in the first direction, and that is arranged in contact with the slot region side of the core back portion and in contact with the adjacent tooth portion.This allows the insulating film member to be made of a film with a simple cutout shape, and the material costs, processing costs, and labor costs are low, making it possible to obtain the insulating film member at low cost.

[0058] Furthermore, in the armature of the electric machine of embodiment 3 configured as described above, the interphase insulators are formed to protrude further than the ground insulators in the direction away from the armature core in the third direction, and the second hooks are formed to protrude further than the ground insulators in the direction away from the armature core in the third direction. This makes it even less likely that misalignment or falling off will occur due to vibrations during transportation or subsequent processes, and makes it possible to provide an armature for an electric machine and an electric machine with even higher reliability.

[0059] Embodiment 4. Fig. 15A is a perspective view showing the configuration of an insulating film member of an armature according to embodiment 4, and 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 the 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.

[0060] In the figures, parts similar to those in the above-described embodiments are denoted by the same reference numerals, and descriptions thereof will be omitted. The following description will focus on parts that are different from those in the above-described embodiments, and similar parts will be omitted as appropriate. As shown in FIG. 15 , the insulating film member 6 has a third hook portion 20 formed by partially protruding from the ground insulator 15 in the first direction Y. As shown in FIG. 17 , the armature core 1 has second groove portions 21 formed at corner positions formed by the teeth 2 and the core back 3, except at both ends in the third direction Z. Therefore, as shown in FIG. 16 , the armature core 1 does not have second groove portions 21 formed at corner positions formed by the teeth 2 and the core back 3, except at both ends in the third direction Z.

[0061] 16 and 17 , the second groove 21 does not penetrate in the third direction Z, but is appropriately formed to match the position of the third hook 20 of the insulating film member 6. As shown in Fig. 17 , the third hook 20 is inserted into the second groove 21. Thus, the insulating film member 6 is locked so as not to fall off in the second direction X and the third direction Z.

[0062] Furthermore, when inserting the insulating film member 6 from the other end side X2 in the second direction X, the insulating film member 6 may be inserted between adjacent teeth 2 while keeping the interphase insulators 16 of the two overlapping insulating films completely closed in the first direction Y, and after being positioned at a position where the ground insulators 15 and the core back portion 3 abut, the interphase insulators 16 may be opened on both sides in the first direction Y by the restoring force F, and the third hook portions 20 may be inserted and positioned in the second groove portions 21. In this case, the third hook portions 20 can be positioned in the second groove portions 21 while preventing interference of the third hook portions 20 with the adjacent teeth 2.

[0063] In this embodiment 4, an example has been shown in which 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 may be provided, such as two locations on one side of the ground insulation portion 15, and the same effect as in the above embodiment 4 can be achieved.

[0064] The armature of the electric machine of embodiment 4 configured as described above has the same effects as the above embodiments, and in addition, second groove portions are formed at corner positions where the tooth portions and the core back portions abut, in parts of the armature core other than both ends in a third direction perpendicular to the first and second directions, and the ground insulators are provided with third hook portions that are disposed in the second groove portions. This makes it even less likely that misalignment or falling off will occur due to vibrations during transportation and subsequent processes, and makes it possible to provide an armature of an electric machine and an electric machine that are even more reliable.

[0065] Embodiment 5. Fig. 18A is a perspective view showing the configuration of an insulating film member of an armature according to embodiment 5, and 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. 20 is an enlarged top view of a portion of the armature core shown in Fig. 19.

[0066] In the figures, parts similar to those in the above-described embodiments are denoted by the same reference numerals, and descriptions thereof will be omitted. The following description will focus on differences from the above-described embodiments, and similar parts will be omitted where appropriate. As shown in FIGS. 18 and 19 , the interphase insulator 16 of the insulating film member 6 includes second hooks 19 extending toward one end X1 in the second direction X at both ends of the interphase insulator 16 in the third direction Z and sandwiching both ends of the core back portion 3 in the third direction Z. As in the third embodiment, the second hooks 19 are formed to protrude beyond the ground insulator 15 in the direction away from the armature core 1 in the third direction Z. Furthermore, the second hooks 19 include protrusions 190 at the ends of the one end X1 that extend toward the armature core 1 in the third direction Z.

[0067] 20 , the core back portion 3 of the armature core 1 has a third groove 23 formed on the one end side X1 and extending in the third direction Z. The protrusion 190 of the second hook portion 19 of the insulating film member 6 is inserted into the third groove 23. Thus, the insulating film member 6 is locked so as not to fall off in the second direction X and the third direction Z.

[0068] Furthermore, when inserting the insulating film member 6 from the other end side X2 in the second direction X, the interphase insulators 16 of the two overlapping insulating films may be kept completely closed in the first direction Y while the insulating film member 6 is inserted between adjacent teeth 2 until the ground insulators 15 and the core back portion 3 abut against each other. After the interphase insulators 16 are opened to both sides in the first direction Y by the restoring force F, the second hooks 19 may be inserted through openings 230 (see FIG. 20 ) that open to the other end side X2 of the third grooves 23. In this case, the protrusions 190 of the second hooks 19 can be positioned in a portion that is wider in the first direction Y at the one end side X1 of the third grooves 23 while preventing the second hooks 19 from interfering with the adjacent teeth 2. Note that the second grooves 21 may be formed partway from both end faces toward the center of the core back portion 3 in the third direction Z.

[0069] The armature of the electric machine of embodiment 5 configured as described above has the same effects as the above embodiments, and in addition, a third groove portion is formed on the end face in the third direction of the core back portion, and the second hook portion of the interphase insulator is inserted into the third groove portion, so that misalignment and falling off due to vibrations during transportation and subsequent processes are even less likely to occur, and an armature of an electric machine and an electric machine with even higher reliability can be provided.

[0070] In the above embodiments, an example has been shown in which the core back portion of the armature core is formed linearly and multiple teeth are formed on the linear core back portion at predetermined intervals, but this is not limited to this. Even if the core back portion is formed curved or arcuate and the teeth are formed on the core back portion at predetermined intervals, the above embodiments can be appropriately applied and similar effects can be achieved. Furthermore, while the description has focused on a case in which the number of teeth is three, the number of teeth can be appropriately set as needed. Furthermore, while the description has focused on a case in which the armature core has multiple integrated teeth, separate teeth may also be connected, as shown in Figure 14 below.

[0071] As another specific example, as shown in Fig. 14, the present invention can be applied to a rotary electric machine in which the core back portion 3 of the armature core 1 has an annular shape, and the teeth portions 2 protrude toward the center of the annulus (the other end side X2 in the second direction X) and are radially arranged at predetermined intervals in the circumferential direction (first direction Y). Note that although the third direction Z is not shown in Fig. 14, the third direction Z corresponds to the axial direction of the rotation shaft of the rotary electric machine.

[0072] Although various exemplary embodiments and examples are described in this disclosure, the various features, aspects, and functions described in one or more embodiments are not limited to the application of a particular embodiment, but may be applied to the embodiments alone or in various combinations. Therefore, countless variations not illustrated in the specification and drawings are contemplated within the scope of the technology of this disclosure. For example, this includes cases where at least one component is modified, added, or omitted, and even cases where at least one component is extracted and combined with components of another embodiment.

[0073] Various aspects of the present disclosure are summarized below as appendices.

[0074] (Supplementary Note 1) An armature for an electric machine includes an armature core, and a drive coil wound around an insulating frame and installed on the armature core, wherein the armature core has: a plurality of teeth formed at intervals in a first direction and projecting in a second direction perpendicular to the first direction; a core back portion formed at one end side of the teeth in the second direction to connect the teeth portions adjacent to each other in the first direction and extending in the first direction; and a slot region surrounded by the teeth portions and the core back portion; the insulating frame has: a winding frame portion covering the teeth portions of the armature core and the slot region side of the core back portion, and around which the drive coil is wound; and a through hole formed to penetrate in the second direction and in which the teeth portions of the armature core are disposed; and the drive coil is installed on each of the plurality of teeth via the insulating frame, An armature for an electric machine comprising: an insulating film member having interphase insulators installed between the drive coils adjacent in a first direction; and ground insulators formed by extending in the first direction from one end side of the interphase insulator in a second direction, the interphase insulators being arranged in contact with the slot region side of the core back portion and being inserted into the tooth portions adjacent in the first direction. (Supplementary Note 2) The armature for an electric machine according to Supplementary Note 1, wherein the ground insulators have first hooks that hold the tooth portions at both ends in a third direction orthogonal to the first and second directions. (Supplementary Note 3) The armature for an electric machine according to Supplementary Note 1 or Supplementary Note 2, wherein grooves are formed at corners where the tooth portions and the core back portion abut, and the ground insulators are inserted into the grooves. (Supplementary Note 4) The armature for an electric machine according to any one of Supplements 1 to 3, wherein the interphase insulators have second hooks that hold the core back portion at both ends in a third direction orthogonal to the first and second directions.(Supplementary Note 5) An armature for an electric machine includes an armature core, and a drive coil wound around an insulating frame and installed on the armature core, wherein the armature core has: a plurality of teeth formed at intervals in a first direction and projecting in a second direction perpendicular to the first direction; a core back portion formed at one end side of the teeth in the second direction and extending in the first direction to connect the teeth portions adjacent to each other in the first direction; and a slot region surrounded by the teeth portions and the core back portion; the insulating frame has: a winding frame portion covering the teeth portions of the armature core and the slot region side of the core back portion, and around which the drive coil is wound; and a through hole formed to penetrate in the second direction and in which the teeth portions of the armature core are disposed; and the drive coil is installed on each of the plurality of teeth via the insulating frame, an insulating film member having an interphase insulator disposed between the drive coils adjacent in a first direction and having second hook portions that sandwich the core back portion at both ends in a third direction perpendicular to the first and second directions, and a ground insulator formed by extending in the first direction from one end side of the interphase insulator in the second direction, the ground insulator being disposed in contact with the slot region side of the core back portion and in contact with the tooth portions adjacent in the first direction. (Supplementary Note 6) The armature of an electric machine according to any one of Supplementary Notes 1 to 5, wherein the insulating film member is formed by folding a flat resin film and has a restoring force to an expanded shape. (Supplementary Note 7) The armature of an electric machine according to any one of Supplementary Notes 1 to 6, wherein the insulating frame and the tooth portions each have a convex portion and a concave portion that fit together, and the convex portion fits into the concave portion to fix the insulating frame to the tooth portions. (Supplementary Note 8) An electric machine comprising: an armature of an electric machine according to any one of Supplementary Note 1 to Supplementary Note 7; and a field magnet arranged to face the tip ends of the teeth of the armature core on the other end side in the second direction of the teeth.

[0075] 1 armature core, 2 teeth portion, 3 core back portion, 4 slot region, 5 insulating frame, 6 insulating film member, 7 drive coil, 8 locking groove, 9 winding frame portion, 10 base, 11 through hole, 12 core back side flange portion, 13 teeth side flange portion, 14 locking claw, 15 ground insulation portion, 16 interphase insulation portion, 17 first hook portion, 18 groove portion, 19 second hook portion, 190 protrusion portion, 20 third hook portion, 21 second groove portion, 23 third groove portion, 230 opening portion, F restoring force, X second direction, X1 one end side, X2 other end side, Y first direction, Z third direction.

Claims

1. An armature of an electrical machine, comprising: an armature core; and a drive coil formed by winding around an insulating frame and installed on the armature core, wherein the armature core includes: a plurality of teeth portions formed at intervals in a first direction and protruding in a second direction orthogonal to the first direction; a core back portion formed by connecting the teeth portions adjacent to each other in the first direction at one end side of the teeth portion in the second direction and extending in the first direction; and a slot region surrounded by the teeth portion and the core back portion; the insulating frame includes: a winding frame portion covering the slot region side of the teeth portion and the core back portion of the armature core and around which the drive coil is wound; and a through hole formed to penetrate in the second direction and in which the teeth portion of the armature core is disposed; the drive coil is installed on each of the plurality of teeth portions via the insulating frame, and includes: a phase insulation portion installed between the drive coils adjacent to each other in the first direction; and an insulating film member having a ground insulation portion formed to extend in the first direction from one end side of the phase insulation portion in the second direction, contacting the slot region side of the core back portion, and inserted into the teeth portions adjacent to each other in the first direction; wherein the phase insulation portion contacts an end portion in the first direction of a core back side flange portion of the winding frame portion.

2. An armature of an electrical machine, comprising: an armature core; and a drive coil formed by winding around an insulating frame and installed on the armature core, wherein the armature core includes: a plurality of teeth portions formed at intervals in a first direction and protruding in a second direction orthogonal to the first direction; a core back portion formed by connecting the teeth portions adjacent to each other in the first direction at one end side of the teeth portion in the second direction and extending in the first direction; and a slot region surrounded by the teeth portion and the core back portion; the insulating frame includes: a winding frame portion covering the slot region side of the teeth portion and the core back portion of the armature core and around which the drive coil is wound; and a through hole formed to penetrate in the second direction and in which the teeth portion of the armature core is disposed; the drive coil is installed on each of the plurality of teeth portions via the insulating frame, ​ A phase insulation part installed between the drive coils adjacent to each other in the first direction, and a ground insulation part formed by extending from one end side in the second direction of the phase insulation part in the first direction, arranged in contact with the slot region side of the core back part, and inserted into the teeth parts adjacent to each other in the first direction. An insulating film member having the ground insulation part is provided. The core back side flange part of the winding frame part is an armature of an electric machine that contacts the ground insulation part.

3. The ground insulation part is covered in the third direction by the core back side flange part of the winding frame part. The armature of the electric machine according to claim 1 or claim 2.

4. The ground insulation part is formed in contact with the teeth parts adjacent to each other in the first direction. The armature of the electric machine according to claim 1 or claim 2.

5. The end part in the first direction of the ground insulation part Contacts the side surface in the second direction of the core back part and the side surface in the second direction of the winding frame part. The armature of the electric machine according to claim 4.

6. The ground insulation part is formed in contact with the side surface in the first direction of the teeth parts adjacent to each other in the first direction. The armature of the electric machine according to claim 5.

7. The phase insulation part protrudes more than the ground insulation part in the direction away from the armature core in the third direction orthogonal to the first direction and the second direction. The armature of the electric machine according to claim 1 or claim 2.

8. The ground insulation part includes a first hooking part that sandwiches the teeth part at both ends in the third direction orthogonal to the first direction and the second direction. From one end side in the second direction of the phase insulation part of the first hooking part The length in the first direction Is larger than the length in the first direction from one end side in the second direction of the phase insulation part of the ground insulation part other than the first hooking part. The armature of the electric machine according to claim 1 or claim 2.

9. The phase insulation part has a third direction at the other end side in the second direction that is folded into an acute angle mountain shape. Formed. The armature of the electric machine according to claim 8.

10. An armature of an electric machine including an armature core and A drive coil formed by winding around an insulating frame and installed on the armature core. The armature core is A plurality of teeth parts formed at intervals in the first direction and protruding in the second direction orthogonal to the first direction, and At one end side in the second direction of the teeth part, a core back part formed by connecting the teeth parts adjacent to each other in the first direction and extending in the first direction. It has a slot region surrounded by the tooth portion and the core back portion, The insulating frame is, A winding frame portion that covers the slot region side of the tooth portion and the core back portion of the armature core and around which the drive coil is wound, It has a through hole formed to penetrate in the second direction and in which the tooth portion of the armature core is arranged, The drive coils are respectively installed on a plurality of the tooth portions via the insulating frame, An interphase insulating portion installed between the drive coils adjacent to each other in the first direction, and a ground insulating portion formed to extend from one end side in the second direction of the interphase insulating portion in the first direction and arranged in contact with the slot region side of the core back portion and inserted into the tooth portions adjacent to each other in the first direction. An armature of an electric machine provided with an insulating film member having the above, A groove portion is formed at a corner position where the tooth portion and the core back portion are in contact, The ground insulating portion is inserted into the groove portion and arranged in an armature of an electric machine.

11. An armature of an electric machine including an armature core and A drive coil formed by winding around an insulating frame and installed on the armature core, The armature core is, A plurality of tooth portions formed at intervals in the first direction and protruding in a second direction orthogonal to the first direction, A core back portion formed by connecting the tooth portions adjacent to each other in the first direction at one end side in the second direction of the tooth portion and extending in the first direction, It has a slot region surrounded by the tooth portion and the core back portion, The insulating frame is, A winding frame portion that covers the slot region side of the tooth portion and the core back portion of the armature core and around which the drive coil is wound, It has a through hole formed to penetrate in the second direction and in which the tooth portion of the armature core is arranged, The drive coils are respectively installed on a plurality of the tooth portions via the insulating frame, An interphase insulating portion installed between the drive coils adjacent to each other in the first direction, and a ground insulating portion formed to extend from one end side in the second direction of the interphase insulating portion in the first direction and arranged in contact with the slot region side of the core back portion and inserted into the tooth portions adjacent to each other in the first direction. An armature of an electric machine provided with an insulating film member having the above, A second groove portion is formed at a corner position where the tooth portion and the core back portion are in contact, and at a portion of the armature core other than both ends in a third direction orthogonal to the first direction and the second direction. The armature of the electromechanical machine, wherein the ground insulation part includes a third hooking part disposed in the second groove part.

12. An armature of an electromechanical machine, comprising: an armature core; and a drive coil formed by winding around an insulating frame and installed on the armature core, wherein the armature core includes: a plurality of teeth portions formed at intervals in a first direction and protruding in a second direction orthogonal to the first direction; a core back portion formed by connecting the teeth portions adjacent to each other in the first direction at one end side of the teeth portion in the second direction and extending in the first direction; and a slot region surrounded by the teeth portion and the core back portion, wherein the insulating frame includes: a winding frame portion that covers the slot region side of the teeth portion and the core back portion of the armature core and around which the drive coil is wound; and a through hole formed to penetrate in the second direction and in which the teeth portion of the armature core is disposed, wherein the drive coil is respectively installed on the plurality of teeth portions via the insulating frame, and the armature of the electromechanical machine includes an interphase insulation portion installed between the drive coils adjacent to each other in the first direction, and a ground insulation portion formed to extend from one end side of the interphase insulation portion in the second direction in the first direction and disposed in contact with the slot region side of the core back portion and inserted into the teeth portions adjacent to each other in the first direction.

13. An armature of an electromechanical machine, comprising: an armature core; and a drive coil formed by winding around an insulating frame and installed on the armature core, wherein the armature core includes: a plurality of teeth portions formed at intervals in a first direction and protruding in a second direction orthogonal to the first direction; a core back portion formed by connecting the teeth portions adjacent to each other in the first direction at one end side of the teeth portion in the second direction and extending in the first direction; and a slot region surrounded by the teeth portion and the core back portion, wherein the insulating frame includes: a winding frame portion that covers the slot region side of the teeth portion and the core back portion of the armature core and around which the drive coil is wound; and a through hole formed to penetrate in the second direction and in which the teeth portion of the armature core is disposed, wherein the drive coil is respectively installed on the plurality of teeth portions via the insulating frame, A phase insulation part having a second hooking part installed between the drive coils adjacent to each other in the first direction and sandwiching the core back part at both ends in a third direction orthogonal to the first direction and the second direction, and an insulating film member having a ground insulation part formed by extending from one end side in the second direction of the phase insulation part in the first direction, arranged in contact with the slot region side of the core back part, and in contact with the teeth parts adjacent to each other in the first direction. The phase insulation part is in contact with an end part in the first direction of a core back side flange part of the winding frame part. An armature of an electric machine.

14. An armature core, An armature of an electric machine provided with a drive coil wound around an insulating frame and installed on the armature core, The armature core, A plurality of teeth parts formed at intervals in the first direction and protruding in a second direction orthogonal to the first direction, A core back part formed by connecting the teeth parts adjacent to each other in the first direction at one end side in the second direction of the teeth parts and extending in the first direction, Having a slot region surrounded by the teeth part and the core back part, The insulating frame, A winding frame part covering the teeth part of the armature core and the slot region side of the core back part around which the drive coil is wound, Having a through hole formed to penetrate in the second direction and in which the teeth part of the armature core is arranged, The drive coil is respectively installed on a plurality of the teeth parts via the insulating frame, A phase insulation part having a second hooking part installed between the drive coils adjacent to each other in the first direction and sandwiching the core back part at both ends in a third direction orthogonal to the first direction and the second direction, and an insulating film member having a ground insulation part formed by extending from one end side in the second direction of the phase insulation part in the first direction, arranged in contact with the slot region side of the core back part, and in contact with the teeth parts adjacent to each other in the first direction. An armature of an electric machine, wherein a core back side flange part of the winding frame part is in contact with the ground insulation part.

15. The ground insulation part is covered in the third direction by a core back side flange part of the winding frame part. The armature of an electric machine according to Claim 13 or Claim 14.

16. The phase insulation part is formed to protrude more than the ground insulation part in a direction away from the armature core in the third direction. The armature according to claim 13 or claim 14, wherein the second engaging portion protrudes more than the ground insulation portion in a direction away from the armature core in the third direction.

17. An armature of an electrical machine comprising: an armature core; and a drive coil formed by winding around an insulating frame and installed on the armature core, wherein the armature core has: a plurality of teeth formed at intervals in a first direction and protruding in a second direction orthogonal to the first direction; a core back portion formed by connecting the teeth adjacent to each other in the first direction at one end side of the teeth in the second direction and extending in the first direction; and a slot region surrounded by the teeth and the core back portion, wherein the insulating frame has: a winding frame portion that covers the slot region side of the teeth and the core back portion of the armature core and around which the drive coil is wound; and a through hole formed to penetrate in the second direction and in which the teeth of the armature core are disposed, wherein the drive coil is installed on each of the plurality of teeth via the insulating frame, and a phase insulation portion having a second engaging portion installed between the drive coils adjacent to each other in the first direction and sandwiching the core back portion at both ends in a third direction orthogonal to the first and second directions, and an insulating film member having a ground insulation portion formed by extending from one end side of the phase insulation portion in the second direction in the first direction, contacting the slot region side of the core back portion, and contacting the teeth adjacent to each other in the first direction. The armature of an electrical machine, wherein a third groove portion is formed on an end surface of the core back portion in the third direction, and the second engaging portion of the phase insulation portion is disposed by being inserted into the third groove portion.

18. The insulating film member is formed by bending a planar resin film and has a restoring force to a developed shape. The armature of an electrical machine according to any one of claims 1, 2, 10, 11, 12, 13, 14, or 17.

19. The insulating frame and the teeth each have a convex portion and a concave portion that fit into each other, and the convex portion fits into the concave portion, and the insulating frame is fixed to the teeth. The armature of an electrical machine according to any one of claims 1, 2, 10, 11, 12, 13, 14, or 17.

20. The armature of an electromechanical machine according to any one of claim 1, claim 2, claim 10, claim 11, claim 12, claim 13, claim 14 or claim 17, and An electromechanical machine comprising a field magnet disposed to face a tip portion of the tooth portion on the other end side in the second direction of the tooth portion of the armature core.