JP2016073007A - Stator for motor, motor, and air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stator for a motor which reduces man-hours for assembly, improves assemblability of an insulation part, and is capable of improving quality by preventing a half-assembled state of the insulation part.SOLUTION: The stator for the motor includes: a stator core 1; an insulation part 8 formed from divided parts 8a and 8b which are bisected in an axial direction of the stator core 1; and a coil which is wound around a plurality of teeth 5 via the insulation part 8. The divided part 8a includes a plurality of insulation components 10 which are assembled with a plurality of partial cores 2 and connected by a connection part 11. The divided part 8b includes a plurality of insulation components 20 which are assembled with the partial cores 2 and connected by a connection part 21. The partial core 2 includes a groove 6 axial extending within a range where an end face of the partial core 2 in an axial direction is not reached, on a surface of a core back 4 opposite to the teeth 5. The insulation component 10 includes a lock part 14a which is locked to one end portion of the groove 6 of the partial core 2, and the insulation component 20 includes a lock part 24a which is locked to another end portion of the groove 6 of the partial core 2.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a stator of an electric motor, an electric motor, and an air conditioner, and more particularly to a structure of an insulating portion applied to a stator core of the electric motor.

  The stator of the electric motor includes a stator core provided with a plurality of teeth, an insulating portion applied to the plurality of teeth, and a coil wound around the plurality of teeth via the insulating portion. The insulating part is molded with resin integrally with the stator core, or is assembled to the stator core after molding.

  The shape of the insulating portion is not the same shape for each tooth, and may be different for each tooth. This is because the insulating portion is provided with a function other than insulation, such as a hole for assembling a terminal.

  As described above, the shape of the insulating portion can be different for each tooth, while the difference in shape is relatively small. For this reason, when the insulating part is composed of insulating parts separated for each tooth, the number of parts increases, but the difference in shape between the insulating parts is relatively small. , Easy to make assembly mistakes. If an assembly error occurs, defective products are generated and productivity is lowered. In addition, when the number of parts is large, the number of assembling steps increases, the assembling property decreases, and the cost also increases.

  On the other hand, Patent Document 1 describes a configuration in which the insulating portion is constituted by two members divided in the axial direction, and these two members are respectively integrated by a connecting portion. Thus, it is described that it is not necessary to produce an insulating portion for each tooth, the number of parts is reduced, and the number of assembling steps is also reduced.

JP 2007-288852 A

  However, Patent Document 1 does not describe a structure that prevents the insulating part from being semi-assembled or prevents the insulating part from falling off. Therefore, according to the prior art described in Patent Document 1, the insulating portion is in a semi-assembled state, and the quality of the stator may be deteriorated.

  The present invention has been made in view of the above, and the number of assembling steps is reduced, the assembling property of the insulating part is good, and the quality of the insulating part can be improved by preventing the semi-assembled state of the insulating part. An object of the present invention is to provide a stator for an electric motor.

  In order to solve the above-described problems and achieve the object, the stator of the electric motor according to the present invention includes a core back and a plurality of partial cores each having a core back and teeth protruding from the core back. A stator core that is bent between the partial cores and configured in an annular shape, and first and second divided portions that are divided in the axial direction of the stator core, and is assembled to the stator core. And a coil wound around the plurality of teeth via the insulating portion, and the first divided portion is assembled to the plurality of partial cores and at least partially connected thereto A plurality of first insulation components, and the second divided portion includes a plurality of second insulation components assembled to the plurality of partial cores and connected at least partially, The core is each part A groove extending in the axial direction in a range not reaching each end face in the axial direction of each of the partial cores on a surface opposite to the teeth side of the core back of each of the core backs; Each of the second insulating parts is locked to the other end of the groove of each of the partial cores. A part.

  According to the present invention, it is possible to reduce the number of assembling steps, improve the assembling property of the insulating portion, prevent the semi-assembled state of the insulating portion, and improve the quality.

Assembly drawing of insulation part on stator core The perspective view of the stator core by which the coil was wound through the insulation part Vertical section of stator Perspective view of stator of electric motor Perspective view of stator assembly Perspective view of mold stator Vertical section of electric motor Air conditioner configuration diagram

  Below, the stator of the electric motor which concerns on embodiment of this invention, an electric motor, and an air conditioner are demonstrated in detail based on drawing. Note that the present invention is not limited to the embodiments.

Embodiment 1 FIG.
FIG. 1 is an assembly diagram of an insulating part to a stator core, FIG. 2 is a perspective view of a stator core around which a coil is wound via the insulating part, and FIG. 3 is a longitudinal sectional view of the stator. 4 is a perspective view of the stator of the electric motor according to the present embodiment. FIG. 1 shows a band-shaped stator core before being configured in a ring shape, and FIG. 2 shows a band-shaped stator before being configured in a ring shape.

  Stator core 1 includes a plurality of partial cores 2 and a connecting portion 3 that connects adjacent partial cores 2. In the illustrated example, nine partial cores 2 are connected in a band shape by eight connecting portions 3. However, the number of partial cores 2 is not limited to the illustrated example. The stator core 1 is formed by punching electromagnetic steel sheets into a strip shape, caulking the punched electromagnetic steel sheets, and laminating a plurality of sheets by welding or bonding.

  The partial core 2 includes a core back 4 and teeth 5 protruding from the core back 4. The teeth 5 include a teeth main body portion 5a that extends vertically from the core back 4 and a teeth tip portion 5b that is wider than the teeth main body portion 5a and extends in the same direction as the core back 4. The teeth 5 are T-shaped in plan view.

  A groove 6 extending in the axial direction is formed on the surface of the core back 4 opposite to the teeth 5 side. The axial direction is the axial direction of the stator core 1 and the lamination direction of the electromagnetic steel sheets. The groove 6 is formed in a range that does not reach each end face in the axial direction of the stator core 1. That is, the groove 6 is not formed in the core back 4 from the one axial end surface of the stator core 1 to the axial direction, and the axial length from the axial other end surface of the stator core 1 is constant. No groove 6 is formed in the core back 4. In the illustrated example, the axial length between one end of the groove 6 and one end face of the stator core 1 on the one end side is the same as the other end of the groove 6 and the stator core 1 on the other end side. Is equal to the length in the axial direction between the other end face of However, these axial lengths may be different from each other.

  The connecting portion 3 is formed thinner than the core back 4, has flexibility, and can be bent freely. When the stator core 1 is formed in an annular shape, the stator core 1 is bent at the connecting portion 3 between the partial cores 2 with the plurality of teeth 5 inside, and is formed on one surface of the core back 4 forming one end surface of the band-shaped stator core 1. A certain abutting surface 7a and a butting surface 7b which is one surface of the core back 4 forming the other end surface of the band-shaped stator core 1 are abutted and joined. The joining is performed by welding, for example. After the stator core 1 is configured in an annular shape, the core back 4 is disposed on the outer side, and the groove 6 is disposed on the outer peripheral surface of the core back 4.

  The insulating part 8 assembled to the stator core 1 is divided into two parts in the axial direction, and is constituted by divided parts 8a and 8b. The dividing unit 8a is a first dividing unit, and the dividing unit 8b is a second dividing unit. Each of the divided portions 8a and 8b is a resin molded product.

  The dividing portion 8a includes a plurality of insulating components 10 that are assembled to the plurality of partial cores 2, respectively. The insulating component 10 is a first insulating component. In the illustrated example, the number of insulating components 10 is nine, which is the same as the number of partial cores 2. The insulating component 10 is assembled to the partial core 2 from one end side in the axial direction of the stator core 1 to the other end side, and covers the one end side of the tooth main body 5a. The insulating component 10 includes an inner wall 12a that is a first inner wall disposed on the tooth tip 5b side of the partial core 2, an outer wall 13a that is a first outer wall disposed on the core back 4 side of the partial core 2, and It is arrange | positioned between the inner wall 12a and the outer wall 13a, and is provided with the coating | coated part 22a which is a 1st coating | coated part which covers the said one end side of the teeth main-body part 5a. The outer wall 13a is disposed so as to stand on one end face of the core back 4 in the axial direction.

  The division part 8a is integrally connected by the connection part 11 which connects between the insulation components 10. FIG. In detail, the division | segmentation part 8a is connected with the strip | belt shape by the connection part 11 which connects between the outer walls 13a of the adjacent insulation components 10. FIG. The connecting portion 11 is thinner in the axial direction than the inner wall 12a and the outer wall 13a, has flexibility, and can be bent freely. The connecting portion 11 has, for example, an arc shape or a U shape, and projects from the outer wall 13a to the side opposite to the inner wall 12a side.

  The connecting portion 11 can be molded integrally with a plurality of insulating components 10 with resin. At this time, a resin injection port (not shown) can be provided in the connecting portion 11.

  The insulating component 10 includes a foot 14 that protrudes from the outer wall 13a and extends in a direction opposite to the standing direction of the outer wall 13a. The foot 14 has an L-shaped longitudinal section, for example. As shown in FIG. 3, a locking portion 14 a that is a first locking portion that is locked to one end portion of the groove 6 is provided at the distal end portion of the foot 14. Specifically, when the insulating component 10 is assembled from one end side to the other end side of the stator core 1, the outer peripheral surface of the portion where the locking portion 14 a of the foot 14 is not formed with the groove 6 of the core back 4. The foot 14 is elastically deformed around the root and warps while being in contact with the base 14, and the foot 14 recovers from the elastic deformation in a state where the insulating part 10 has been assembled to the partial core 2, and the locking portion 14 a is grooved. 6 and is engaged with one end surface of the groove 6 in the axial direction. Thereby, the insulating component 10 is fixed to the partial core 2.

  The division part 8a is arrange | positioned at the board | substrate side so that it may mention later. That is, the dividing part 8a becomes an insulating part on the connection side. Therefore, the dividing portion 8a is formed with an insertion hole 15 into which the neutral point terminal 16 is inserted and three insertion holes 18 into which the three power supply terminals 17 are inserted. In FIG. 1, the insertion direction of the neutral point terminal 16 and the power supply terminal 17 is indicated by arrows. Furthermore, a plurality of pins 19 are formed in the dividing portion 8a. The neutral point terminal 16, the power supply terminal 17, and the pin 19 are each formed on any one of the insulating components 10. Further, as will be described later, the coil 25 is wound around the partial core 2 via the insulating portion 8. However, the connecting wire (not shown) is continued without breaking between the coils 25, and the connecting wire In order not to contact each other, the connecting wire is wired to the outer wall 13a with the height changed in the axial direction. Therefore, the outer wall 13a has different shapes so that the outer wall 13a is individually provided with the height of the entrance and exit of the crossover. As described above, the insulating component 10 is generally provided with a function other than the insulation, and the shape of the insulating component 10 is different from each other due to such an additional function.

  The dividing portion 8b includes a plurality of insulating components 20 that are assembled to the plurality of partial cores 2, respectively. The insulating component 20 is a second insulating component. In the illustrated example, the number of insulating components 20 is nine, which is the same as the number of partial cores 2. The insulating component 20 is assembled to the partial core 2 from the other end side in the axial direction of the stator core 1 to one end side, and covers the other end side of the tooth main body 5a. Therefore, the teeth body 5a is entirely covered with the insulating components 10 and 20. The insulating component 20 includes an inner wall 12b that is a second inner wall disposed on the tooth tip 5b side of the partial core 2, an outer wall 13b that is a second outer wall disposed on the core back 4 side of the partial core 2, and It is arrange | positioned between the inner wall 12b and the outer wall 13b, and is provided with the coating | coated part 22b which is a 2nd coating | coated part which covers the said other end side of the teeth main-body part 5a. The outer wall 13b is disposed so as to stand on the other end surface of the core back 4 in the axial direction.

  The division part 8b is integrally connected by the connection part 21 which connects between the insulation components 20. FIG. In detail, the division | segmentation part 8b is connected with the strip | belt shape by the connection part 21 which connects between the outer walls 13b of the adjacent insulation components 20. FIG. The connecting portion 21 is thinner in the axial direction than the inner wall 12b and the outer wall 13b, has flexibility, and can be bent. The connecting portion 21 has, for example, an arc shape or a U shape, and projects from the outer wall 13b to the side opposite to the inner wall 12b side.

  The connecting portion 21 can be molded integrally with a plurality of insulating components 20 from resin. At this time, a resin injection port (not shown) can be provided in the connecting portion 21.

  The insulating component 20 includes a foot 24 that protrudes from the outer wall 13b and extends in a direction opposite to the standing direction of the outer wall 13b. The foot 24 has an L-shaped longitudinal section, for example. As shown in FIG. 3, a locking portion 24 a that is a second locking portion that is locked to the other end portion of the groove 6 is provided at the distal end portion of the foot 24. Specifically, when the insulating component 20 is assembled from the other end side to the one end side of the stator core 1, the outer peripheral surface of the portion where the locking portion 24 a of the foot 24 is not formed with the groove 6 of the core back 4. The foot 24 is elastically deformed around the base and warps while being in contact with the base 24. In a state where the insulating part 20 has been assembled to the partial core 2, the foot 24 recovers from the elastic deformation, and the locking portion 24a has a groove. 6 and is engaged with the other end surface of the groove 6 in the axial direction. Thereby, the insulating component 20 is fixed to the partial core 2.

  As shown in FIG. 1, the divided portions 8a and 8b are assembled to the belt-shaped stator core 1 from the opposite sides, the neutral point terminal 16 is inserted into the insertion hole 15 of the divided portion 8a, and the insertion hole of the divided portion 8a is inserted. The power terminal 17 is inserted into 18. Further, as shown in FIG. 2, a coil 25 is formed by winding a magnet wire through the insulating portion 8 around the band-shaped stator core 1 to which the insulating portion 8 is assembled. At this time, if the connecting portions 11 and 21 are in the way, the connecting portions 11 and 21 can be cut before starting winding. When the connecting portions 11 and 21 do not get in the way, the winding is performed with the connecting portions 11 and 21 remaining. As a result, processing steps can be reduced, and costs can be reduced. One end of the magnet wire is joined to the neutral point terminal 16 and the other end is joined to the power supply terminal 17 by fusing or soldering.

  Further, the stator core 1 shown in FIG. 2 is formed in an annular shape, and the abutting surfaces 7a and 7b are joined to form the stator 30 shown in FIG. At this time, the lengths of the connecting portions 11 and 21 are ensured so as not to hinder the bending of the stator core 1. The inner walls 12a and 12b are disposed on the inner diameter side, and the outer walls 13a and 13b are disposed on the outer diameter side. Moreover, the connection part 11 protrudes from the outer wall 13a to the outer diameter side, and connects between the insulation components 10. Similarly, the connection part 21 protrudes from the outer wall 13b to the outer diameter side and connects the insulating parts 20 to each other. Further, the surface of the stator core 1 on which the groove 6 is formed is an outer peripheral surface.

  FIG. 5 is a perspective view of the stator assembly. In FIG. 5, the same components as those shown in FIGS. 1 to 4 are denoted by the same reference numerals.

  As shown in FIG. 5, the stator assembly 31 includes a stator 30, a sensor board 32 assembled to one end of the stator 30 in the axial direction, a sensor board 32, and a stator side of the sensor board 32. The same as the board holding part 44 for holding the opposite side surface, the board lead-in connector 38 for the power supply lead wire assembled to the face opposite to the stator side of the sensor board 32, and the board lead-in connector 38 for the power supply lead wire. A sensor lead wire board-in connector 39 assembled on the surface opposite to the stator side of the sensor board 32, a power lead wire 33 connected to the power lead wire board in connector 38, and a sensor lead wire A sensor lead wire 34 connected to the board-in connector 39, a lead wire lead-out component 36 that leads out the power supply lead wire 33 and the sensor lead wire 34, and a sensor substrate 32 and lead wire lead-out. The power supply lead wire holding component 35 that holds the power supply lead wire 33 together with the lead wire lead-out component 36 and the sensor lead wire 34 together with the lead wire lead-out component 36 are assembled. And a sensor lead wire holding component 37 for holding.

  As shown in FIG. 5, the sensor substrate 32 to which the power supply lead 33 and the sensor lead 34 are assembled is assembled to the stator 30. At this time, the three pins 19 provided in the insulating portion 8 are assembled and positioned by passing through the pin through holes provided in the sensor substrate 32 and the substrate pressing component 44, respectively. Further, in accordance with the installation of the sensor substrate 32, the power supply terminal 17 assembled in the insulating portion 8 is passed through the terminal through hole of the sensor substrate 32. The pin 19 exposed from the board holding component 44 is thermally welded, and the power supply terminal 17 exposed from the sensor board 32 is soldered, whereby the sensor board 32 is assembled.

  FIG. 6 is a perspective view of the mold stator 40. The mold stator 40 includes a mold resin portion 41. The mold stator 40 is obtained by placing the stator assembly 31 in a mold and molding it with a mold resin such as BMC (Bulk Molding Compound). At the time of molding, it is not necessary to cut out unless the connecting portions 11 and 21 are exposed from the mold resin portion 41. Therefore, the number of steps is reduced and the cost is also reduced.

  FIG. 7 is a longitudinal sectional view of the electric motor according to the present embodiment. The electric motor 50 according to the present embodiment includes a mold stator 40, a rotor 51 disposed inside the mold stator 40, bearings 53a and 53b assembled to a shaft 52 of the rotor 51, and mold fixing. And a bracket 54 press-fitted into the child 40. FIG. 7 shows an example of the configuration of the electric motor, and is not limited to the illustrated example.

  As described with reference to FIGS. 1 to 4, the shape of the insulating component 10 constituting the dividing portion 8 a is different for each tooth 5. This is because functions other than insulation are added to the dividing portion 8a. In the illustrated example, the shape of the insulating component 20 is the same for the dividing portion 8b, but the shape of the insulating component 20 may be different for each tooth 5 by adding some function as in the dividing portion 8a. obtain.

  As described above, the shape of the insulating components 10 and 20 can be different for each tooth 5, while the difference in shape is relatively small. Therefore, when the insulating parts 10 and 20 are configured separately for each tooth 5, the number of parts is increased, but the difference in shape between the insulating parts 10 and 20 is relatively small. When assembling 20 to the teeth 5, an assembly error is likely to occur. If an assembly error occurs, defective products are generated and productivity is lowered. In addition, when the number of parts is large, the number of assembling steps increases, the assembling property decreases, and the cost also increases.

  Therefore, in the present embodiment, the adjacent insulating components 10 are connected by the connecting portion 11, and the dividing portion 8a is integrally formed in a strip shape. Thereby, since the number of parts is reduced, the assembly man-hour is reduced, the cost is reduced, the occurrence of an assembly error is suppressed, and the quality is improved. Similarly, the adjacent insulating components 20 are connected by a connecting portion 21, and the dividing portion 8b is integrally formed in a strip shape. In this case, the same effect can be obtained.

  In the present embodiment, all of the plurality of insulating components 10 are integrally connected by the connecting portion 11, but a configuration in which some of all the insulating components 10 are integrally connected by the connecting portion 11 is also possible. It is. Even in this case, since the number of parts is reduced, it is possible to improve the assembling property, reduce the cost, and improve the quality. The same applies to the insulating component 20, and a configuration in which a part of all the insulating components 20 are integrally connected by the connecting portion 21 is possible, and the same effect is achieved.

  Moreover, in this Embodiment, the connection part 11 of the division part 8a is made into the circular arc shape or U-shape which connects between the outer walls 13a. Thereby, the assembly | attachment of the division part 8a to the stator core 1 becomes easy. In the stator core 1, the pitch between the teeth 5 may be slightly shifted, or the teeth 5 may be slightly bent and the teeth 5 may not be parallel to each other. In addition, the size and shape of the dividing unit 8a may slightly differ from product to product due to variations due to molding, variations among product lots, or expansion and contraction due to changes in temperature. Therefore, if the connecting portion 11 is linear and the outer walls 13a are linearly connected, it may be difficult to assemble the divided portion 8a to the stator core 1. On the other hand, since the connecting portion 11 can be easily deformed by forming the connecting portion 11 in an arc shape or a U-shape, the plurality of insulating components 10 are copied to the respective teeth 5 of the stator core 1. However, it can be easily assembled. For this reason, assemblability improves and the cost reduction accompanying it can be aimed at. The same applies to the shape of the connecting portion 21 of the dividing portion 8b.

  It is also possible to adopt a configuration in which the connecting portions 11 and 21 have a shape other than an arc shape or a U-shape, and the insulating parts 10 and 20 are connected at portions other than between the outer walls 13a and 13b.

  In the present embodiment, the partial core 2 is provided with grooves 6 extending in the axial direction on the outer peripheral surface of the core back 4 of the partial core 2 in a range that does not reach the end surfaces in the axial direction of the partial core 2. Furthermore, the insulating component 10 includes a locking portion 14 a that is locked to one end of the groove 6 of the partial core 2, and the insulating component 20 is locked to the other end of the groove 6 of the partial core 2. A portion 24a is provided. As a result, it is possible to prevent the insulating parts 10 and 20 from being semi-assembled and to prevent the insulation parts 10 and 20 from falling off, and to improve the quality of the stator 30. In particular, the locking portion 14a is provided at the tip of the L-shaped foot 14 provided on the outer wall 13a, and the locking portion 24a is provided at the tip of the L-shaped foot 24 provided on the outer wall 13b. By engaging the portions 14a and 24a with the respective end portions of the groove 6, the insulating components 10 and 20 can be reliably fixed to the partial core 2 with a simple structure.

  Further, when the connecting portions 11 and 21 are obstructed when the coil 25 is formed by winding the magnet wire around the insulating portion 8 or when the stator core 1 is bent into an annular shape, 21, it is necessary to cut the connecting parts 11 and 21, but the insulating parts 10 and 20 are locked to the partial core 2 by the locking parts 14 a and 24 a, respectively. Can be prevented from falling off, making it possible to ensure manufacturing quality and improve quality.

  Moreover, in this Embodiment, the injection port of the resin at the time of shape | molding the division part 8a with resin is provided in the connection part 11. FIG. In this case, the resin is divided into two hands via the connecting portion 11 and injected into the insulating component 10 connected by the connecting portion 11. In the configuration in which the resin injection port is provided in each connecting portion 11, since the number of injection ports is smaller than in the configuration in which the resin injection port is provided in each insulating component 10, the number of runners can be reduced, and the runner is discarded. In this case, the amount of waste can be reduced and the cost can be reduced. The same effect can be obtained when a resin inlet is provided in the connecting portion 21.

Embodiment 2. FIG.
FIG. 8 is a configuration diagram of the air conditioner according to the present embodiment. The air conditioner 80 according to the present embodiment includes an indoor unit 81 and an outdoor unit 82 connected to the indoor unit 81. The indoor unit 81 includes a blower on which the electric motor 50a is mounted. The outdoor unit 82 includes a blower on which the electric motor 50 b is mounted and a compressor 83. Electric motors 50a and 50b are both electric motors 50 described in the first embodiment. The compressor 83 also includes an electric motor (not shown), and the electric motor can be the electric motor 50 described in the first embodiment. According to the present embodiment, it is possible to reduce the cost and improve the quality of the air conditioner 80 by applying a low-cost and high-quality electric motor.

  In addition, FIG. 8 shows an example of the configuration of the air conditioner, and is not limited to the illustrated example. In addition, the electric motor according to the first embodiment can be mounted on an electric device other than the air conditioner, and in this case, the same effect as that of the present embodiment can be obtained.

  The configuration described in the above embodiment shows an example of the contents of the present invention, and can be combined with another known technique, and can be combined with other configurations without departing from the gist of the present invention. It is also possible to omit or change the part.

  DESCRIPTION OF SYMBOLS 1 Stator core, 2 partial core, 3,11,21 connection part, 4 core back, 5 teeth, 5a teeth main-body part, 5b teeth front-end | tip part, 6 groove | channel, 7a, 7b butting surface, 8 insulation part, 8a, 8b Dividing part 10, 20 Insulating part, 12a, 12b inner wall, 13a, 13b outer wall, 14, 24 feet, 14a, 24a locking part, 15, 18 insertion hole, 16 neutral point terminal, 17 power terminal, 19 pin, 22a, 22b Cover, 25 coils, 30 stator, 31 stator assembly, 32 sensor board, 33 power supply lead wire, 34 sensor lead wire, 35 power supply lead wire holding component, 36 lead wire lead-out component, 37 sensor lead wire holding Parts, 38 Board-in connector for power supply lead wire, 39 Board-in connector for sensor lead wire, 40 Mold stator, 41 Rudo resin portion, 44 substrate pressing parts, 50, 50a, 50b electric motors, 51 rotor, 52 shaft, 53a, 53b bearing, 54 bracket, 80 air conditioners, 81 indoor unit 82 outdoor unit, 83 compressor.

Claims (7)

A stator core configured in an annular shape by a plurality of partial cores having a core back and teeth projecting from the core back being bent in a plurality of teeth and being bent between the partial cores;
An insulating portion that is composed of first and second divided portions divided in the axial direction of the stator core, and is assembled to the stator core;
A coil wound around the plurality of teeth via the insulating portion;
With
The first divided portion includes a plurality of first insulating components that are assembled to the plurality of partial cores and at least partially connected to each other.
The second divided portion includes a plurality of second insulating parts assembled to the plurality of partial cores and connected at least partially.
Each partial core includes a groove extending in the axial direction in a range not reaching each end face in the axial direction of each partial core on a surface opposite to the teeth side of the core back of each partial core,
Each of the first insulating components includes a first locking portion that is locked to one end of the groove of each of the partial cores,
Each said 2nd insulation component is a stator of an electric motor provided with the 2nd latching | locking part latched by the other end part of the said groove | channel of each said partial core. The first divided portion is integrally formed in a band shape by a first connecting portion that connects the first insulating components,
The stator of an electric motor according to claim 1, wherein the second divided portion is integrally formed in a band shape by a second connecting portion that connects the second insulating components. Each of the first insulating components is disposed on a first inner wall disposed on the tooth tip side of the partial core to which the first insulating component is assembled, and on the core back side of the partial core. A first outer wall,
Each said 2nd insulation component is arrange | positioned at the core back side of the said 2nd inner wall arrange | positioned at the teeth front-end | tip part side of the said partial core in which each said 2nd insulation component was assembled | attached. A second outer wall,
The first connecting portion connects between adjacent first outer walls and has an arc shape or a U-shape,
The stator for an electric motor according to claim 2, wherein the second connecting portion connects between adjacent second outer walls and has an arc shape or a U shape. The first locking portion is provided at a tip portion of an L-shaped foot provided on the first outer wall,
The electric motor stator according to claim 3, wherein the second locking portion is provided at a distal end portion of an L-shaped foot provided on the second outer wall. The first connecting portion is provided with a resin inlet when the first divided portion is molded with resin,
The stator of the electric motor according to any one of claims 2 to 4, wherein a resin injection port for molding the second divided portion with resin is provided in the second connecting portion.   The electric motor provided with the stator of the electric motor of any one of Claim 1 to 5.   An air conditioner comprising the electric motor according to claim 6.

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