JP6368598B2 - Rotating electric machine stator, compressor and air conditioner - Google Patents

Description

  The present invention relates to a stator of a rotating electric machine such as an electric motor and a generator, a compressor, and an air conditioner.

  A rotating electrical machine such as an electric motor or a generator includes a substantially cylindrical stator and a rotor loosely inserted into the stator. A plurality of substantially rectangular parallelepiped salient poles each projecting in the axial direction of the cylinder are formed on the inner wall surface of the stator along the circumferential direction, and windings are wound around these salient poles. A space formed between a pair of salient poles adjacent in the circumferential direction is referred to as a “slot”. Since the stator is mainly composed of iron or the like, it is necessary to interpose some insulating member between the stator and the winding.

  In a small electric motor used for a compressor or the like that compresses a refrigerant such as an air conditioner, an insulator and insulating paper are generally used as the above-mentioned “insulating member”. The insulator is formed by forming a resin in a plate shape having a shape substantially equal to the cross-sectional shape of the stator, and is joined to both end faces of the stator. Further, the insulating paper is bent into a substantially U shape that follows the shape of the slot and inserted into each slot. Since the winding is wound around the stator via the insulator and the insulating paper, it is possible to ensure insulation between the stator and the winding.

  When the electric motor used for the above-described compressor or the like is a three-phase electric motor, it is necessary to configure the neutral point by connecting the windings of the respective phases to each other. Patent Document 1 discloses a technique for forming a neutral point by forming a crimp terminal housing on an insulator and connecting each winding to the crimp terminal housing. Here, since the winding is wound around the portion of the insulator that is joined to the salient pole, the crimp terminal housing is not formed, and the crimp terminal housing is formed in the remaining annular portion. Has been.

International Publication No. WO2005 / 124969

By the way, there is a desire to increase the output while maintaining the size of the outer shape of the electric motor. In order to meet this demand, one solution is to increase the number of turns of the winding by enlarging the cross-sectional area of the slot by making the cylindrical portion forming the outer shell of the stator as thin as possible. However, if the cylindrical portion forming the outer shell of the stator is made thin, it is difficult to ensure a sufficient space for forming the crimp terminal housing.
The present invention has been made in view of the above-described circumstances, and can provide a stator, a compressor, and an air conditioner of a rotating electrical machine that can secure a space for forming a connection terminal housing (such as a crimp terminal housing) while realizing a slot having a wide cross-sectional area. The purpose is to provide a machine.

In order to solve the above problems, in the present invention, a stator core having a cylindrical portion formed in a substantially cylindrical shape, and a plurality of salient poles protruding inward from the inner wall of the cylindrical portion, and an end of the stator core An outer wall portion formed in a substantially annular shape, a plurality of winding drum portions located above the plurality of salient poles and projecting inward from the outer wall portion, and an innermost outermost peripheral position of the stator core It possesses an insulator having at least a housing for connection terminal portion is located, wound around the salient poles and the winding body, and a plurality of windings connected to the connection terminal housing, even on the inside, at least a portion of the outer wall the inner surface of the insulator between the said stator core and the connection terminal housing, characterized in that located outside the inner surface outermost peripheral position of the stator core

  According to the present invention, since the connection terminal housing is formed so as to protrude inward from the innermost outermost peripheral position of the stator core, a space for forming the connection terminal housing can be secured while realizing a slot having a wide cross-sectional area.

It is a circuit diagram of the air-conditioning cycle of the air conditioner by 1st Embodiment of this invention. It is sectional drawing of the compressor in 1st Embodiment. It is a perspective view of the stator core and insulator of the stator for electric motors in 1st Embodiment. It is a top view in one manufacturing process of the stator for electric motors in 1st Embodiment. It is a top view in the other manufacturing process of the stator for electric motors in 1st Embodiment. It is a circuit diagram of the stator for electric motors in 1st Embodiment. It is a perspective view of the housing for crimp terminals and a crimp terminal in a 1st embodiment. It is a top view in the other manufacturing process of the stator for electric motors in 1st Embodiment. FIG. 5 is a cross-sectional view taken along line A-A ′ in FIG. 4 of the stator for an electric motor according to the first embodiment. It is sectional drawing equivalent to the A-A 'cross section of the stator for electric motors in 2nd Embodiment. It is a top view in one manufacturing process of the stator for motors in a 3rd embodiment. It is sectional drawing equivalent to the A-A 'cross section of the stator for electric motors in 4th Embodiment.

[First Embodiment]
Hereinafter, the structure of the air conditioner (home room air conditioner) by 1st Embodiment of this invention is demonstrated with reference to FIG.
In FIG. 1, the air conditioner S includes an indoor unit 100 and an outdoor unit 200. The outdoor unit 200 includes a scroll compressor 201, a four-way valve 202, an outdoor heat exchanger 204, and an expansion valve 203, and the indoor unit 100 includes an indoor heat exchanger 102. These components are connected via a refrigerant pipe a. In addition, the indoor blower fan 103 blows air to the indoor heat exchanger 102, and the outdoor blower fan 205 blows air to the outdoor heat exchanger 204. The solid line arrows shown in FIG. 1 indicate the direction in which the refrigerant flows during the heating operation, and the broken line arrows indicate the direction in which the refrigerant flows during the cooling operation. The air conditioner S switches the direction in which the refrigerant flows according to the operation mode, and air-conditions the room by a known heat pump cycle. In addition, since the said heat pump cycle is well-known, it abbreviate | omits about the description.

  Next, the configuration of the scroll compressor 201 will be described with reference to FIG. The scroll compressor 201 is composed of a high-pressure chamber type hermetic scroll compressor, and includes a compression mechanism unit 30 having an orbiting scroll 32 and a fixed scroll 34, an electric motor 20 that drives the compression mechanism unit 30, and a compression mechanism unit. 30 and a cylindrical vertically sealed container 40 in which the electric motor 20 is housed. The compression mechanism unit 30 is disposed at the upper part in the sealed container 40, and the electric motor 20 is disposed at the lower part in the sealed container 40. And the refrigerator oil 50 is stored in the bottom part in the airtight container 40. FIG. In the present specification, the terms “upper” or “lower” are determined by the orientation shown at the right end of FIG.

  The sealed container 40 is configured by a lid chamber 44 and a bottom chamber 46 being welded up and down to a cylindrical casing 42. The lid chamber 44 is provided with a suction pipe 45, and a backflow prevention valve 47 is provided below the suction pipe 45. A discharge pipe 48 is provided on the side surface of the casing 42. The inside of the sealed container 40 is a discharge pressure chamber 49. The suction pipe 45 is for guiding the refrigerant gas to the suction side of the compression mechanism section 30 through the sealed container 40 from its upper surface. The discharge pipe 48 is connected to the side surface so as to communicate with the discharge pressure chamber 49 in the sealed container 40. The electric motor 20 includes a stator 1 and a rotor 22. The stator 1 is fixed to the casing 42, the rotor 22 is rotatably arranged on the stator 1, and a permanent magnet is embedded therein. As a result, the electric motor 20 functions as a permanent magnet synchronous machine, and causes the orbiting scroll 32 to orbit through the crankshaft 36 fixed to the rotor 22.

  The electric motor 20 is a so-called 9-slot concentrated winding electric motor in which the windings are divided and concentrated in nine places in the stator 1. Here, details of the stator core 2 and the insulator 5 which are parts constituting the stator 1 will be described with reference to FIG. In FIG. 3, the stator core 2 includes a cylindrical portion 2b formed in a substantially cylindrical shape, and salient poles 2a,..., 2a formed at nine locations equally divided in the circumferential direction of the cylindrical portion 2b. The salient poles 2a, ..., 2a project from the inner peripheral surface of the cylindrical portion 2b in a substantially rectangular parallelepiped shape toward the central axis. A space formed between the salient poles 2a,..., 2a is referred to as slots 3,. On the outer peripheral surface of the stator core 2, recesses 2 d,..., 2 d having slightly smaller outer diameters are formed at positions corresponding to the back sides of the salient poles 2 a,. Projections 2c, ..., 2c are formed at the positions.

  Into each slot 3,..., 3 is inserted a slot insulating paper 4 formed by bending the insulating paper along the shape. 3 shows a state in which the slot insulating paper 4 is inserted into only one slot 3, the slot insulating paper 4 is inserted into all nine slots 3,... The slot insulating paper 4 protrudes from the upper surface of the stator core 2 by a protruding length d1 (about 3 mm). The length of the slot insulating paper 4 is longer by “2 × d 1” than the length of the stator core 2, and the slot insulating paper 4 protrudes from the lower surface (not shown) of the stator core 2 by the protruding length d 1. .

  An insulator 5 is abutted on the upper surface of the stator core 2. The insulator 5 includes a substantially annular outer wall portion 5b, winding body portions 5a,..., 5a that are formed at nine portions in the circumferential direction of the outer wall portion 5b and project toward the center, and the winding body portions 5a,. The inner wall portions 5c,..., 5c are formed so as to widen the tip of each. In addition, crimp terminal housings 10 (details will be described later) are formed at three equally spaced locations in the outer wall portion 5b. An insulator formed in substantially the same manner as the insulator 5 is abutted with the lower surface (not shown) of the stator core 2. However, the crimp terminal housing 10 is not provided in the insulator abutted on the lower surface.

  Next, the slot insulating paper 4 is inserted into all the slots 3,... 3, the insulator 5 is brought into contact with the upper surface of the stator core 2, and a plan view in a state where winding of the winding 8 is started is shown in FIG. . In FIG. 4, a plurality of inner wall portions 5 c are annularly arranged at the innermost end of the insulator 5 in FIG. 4, and the coil nozzle 6 is inserted between these inner wall portions 5 c. The passage 7 is formed. Here, the coil nozzle 6 is a member used as a wire guide of an automatic winding apparatus, and is formed in a substantially cylindrical shape. The coil nozzle 6 circulates around the salient pole 2a of the stator core 2 along an elliptical orbit. That is, a substantially semicircular track is drawn in the vicinity of the wind drum portion 5a of the insulator 5 and in the vicinity of the wind drum portion of the lower insulator (not shown), and a straight track in the vertical direction is drawn in the slot 3 between the two insulators. And the coil nozzle 6 discharges the coil | winding 8 from the front-end | tip part 6a, orbiting, and, thereby, the winding body part 5a of the insulator 5 and the slot insulation paper 4 are carried out to each salient pole 2a, ..., 2a. The winding 8 is wound with the pinch in between. Here, in the automatic winding device, in order to prevent the winding 8 from being damaged, the operating range of the coil nozzle 6 is programmed so that the coil nozzle 6 does not contact the insulator 5 and the slot insulating paper 4. Yes. In order to prevent the winding 8 from collapsing, the outer wall portion 5 b and the inner wall portion 5 c have a height equal to or higher than the winding height of the winding 8.

  FIG. 5 shows a state in which the winding 8 is wound around each salient pole 2a,..., 2a and the winding body 5a,. In this state, one end (not shown) of each winding 8 is connected to an external power input unit, and the other end is guided to the nearest crimp terminal housing 10. A portion of the winding 8 from each salient pole 2a,..., 2a to the crimp terminal housing 10 is referred to as a “crossover wire 14”. The three crossover wires 14 led to one crimp terminal housing 10 are connected to each other by a crimp terminal 11 fitted into the crimp terminal housing 10. The windings 8 connected to one crimp terminal 11 constitute a U phase, a V phase, and a W phase of a three-phase load, respectively. As described above, the stator 1 is constituted by the stator core 2, the slot insulating paper 4, the insulator 5, the winding 8, the crimp terminal housing 10, and the crimp terminal 11.

  Here, the circuit configuration of the stator 1 will be described with reference to FIG. Three salient poles 2a (see FIG. 3) per system and the winding 8 wound around the winding body 5a constitute the U-phase, V-phase, and W-phase of the three-phase load as described above. Since nine salient poles 2a and winding drum portions 5a are provided in total, three-phase three-phase loads are formed as shown in FIG. Three neutral points N in FIG. 6 correspond to the crimp terminal 11.

  Details of the crimp terminal housing 10 will be described with reference to FIG. The crimp terminal housing 10 is formed in a substantially rectangular parallelepiped box shape whose upper surface is opened, and is formed with three grooves 10b for arranging three crossover wires 14 from the inner surface to the outer surface of the insulator 5. In FIG. 7, each crossover wire 14 is fitted in each of these three grooves 10b. The crimp terminal 11 is formed by punching and bending a single metal plate, and a notch for sandwiching the connecting wires 14 is formed at a position facing each connecting wire 14. Here, when the crimp terminal 11 is press-fitted into the crimp terminal housing 10, the three crossover wires 14 are connected to each other via the crimp terminal 11 and are fixed to the crimp terminal housing 10. Thereafter, in FIG. 7, the connecting wire 14 at the portion protruding from the outer surface 10 a of the crimp terminal housing 10 is cut.

  Next, as shown in FIG. 8, interphase insulating paper 9 is inserted into each slot 3 in order to improve the insulation between the windings 8 of each phase. When the stator 1 is thus completed, the stator 1 is fastened to the casing 42. More specifically, the convex portions 2c,..., 2c of the stator core 2 are fixed to the inner wall 42a of the casing 42 by shrink fitting, welding, or the like. As shown in FIG. 8, a distance d5 of about several millimeters is secured between the crimp terminal housing 10 and the casing 42. The first reason is that insulation must be ensured between the crimp terminal 11, that is, the neutral point N, and the casing 42. The second reason is to prevent the crimp terminal housing 10 from being affected by deformation or the like due to heat generated during shrink fitting or welding. For this reason, it is difficult to arrange the crimp terminal housing 10 so as to protrude further outward.

  Next, FIG. 9 shows a cross section A-A ′ in FIG. 4. That is, FIG. 9 is a cross-sectional view of the central portion of the slot 3, and this position is the position where the coil nozzle 6 is most likely to interfere with the crimp terminal housing 10. In FIG. 9, the inner surface 10c of the crimp terminal housing 10 protrudes inward by the protrusion length d2 with reference to the innermost outermost peripheral position 2e of the stator core 2 (the position on the outermost peripheral side of the inner surface of the stator core 2). This is to increase the cross-sectional area of the slot 3 (see FIG. 3) as much as possible in order to increase the output while maintaining the size of the outer shape of the stator 1 (while maintaining the outer peripheral position of the cylindrical portion 2b in FIG. 9). Is the cause. That is, in this embodiment, when the cross-sectional area of the slot 3 is increased (when the radial size of the slot 3 is increased), the cylindrical portion 2b of the stator core 2 is also expanded outward, and the innermost outermost peripheral position 2e is accordingly increased. As a result, the crimp terminal housing 10 protrudes inward relative to the innermost outermost peripheral position 2e.

  In order to explain this in more detail, the innermost peripheral position of the inner surface in the prior art as a comparative example is indicated by a broken line 2e 'in FIG. As in this comparative example, if the innermost outermost peripheral position 2e extends to the position of the broken line 2e ′, the inner surface 10c of the crimp terminal housing 10 is located outside the broken line 2e ′. Even if not paid, the crimp terminal housing 10 does not interfere with the coil nozzle 6. On the other hand, in the present embodiment, the cylindrical portion 2b is made thin while maintaining the outer diameter of the cylindrical portion 2b of the stator core 2 so that more windings 8 can be wound. That is, the innermost outermost peripheral position 2e is expanded outward from the position of the broken line 2e ′, and the track of the coil nozzle 6 is also set to the outer side, so that the coil nozzle 6 does not interfere with the crimp terminal housing 10. The need to do so has arisen. The inner surface 5d of the outer wall portion of the insulator 5 at a location other than the crimp terminal housing 10 is located outside the innermost outermost peripheral position 2e, and therefore does not interfere with the coil nozzle 6.

  In the present embodiment, the protruding length d2 exceeds the thickness d4 of the slot insulating paper 4. If there is no crimp terminal housing 10, the winding 8 can be wound while the tip 6a (see FIG. 4) of the coil nozzle 6 is brought close to the slot insulating paper 4, but in this embodiment, The tip portion 6a of the coil nozzle 6 can be approached only to the inside of the inner surface 10c of the crimp terminal housing 10. However, even if the winding 8 is actually wound with a certain distance between the tip 6 a of the coil nozzle 6 and the slot insulating paper 4, the winding 8 may be slightly collapsed outward. Therefore, the winding 8 can be wound at a sufficient density in a region outside the inner surface 10c. As described above, the projecting length d2 by which the winding 8 can be wound with a sufficient density can be determined based on factors such as the track of the coil nozzle 6, the material and diameter of the winding 8, and the like.

  As described above, according to the present embodiment, since the crimp terminal housing 10 is formed so as to protrude by the protrusion length d2 inside the innermost outermost peripheral position 2e of the stator core 2, the slot 3 having a wide cross-sectional area is realized. A space for forming the crimp terminal housing 10 can be secured. Thereby, more windings 8 than the conventional one can be wound around the salient pole 2a, and the output of the electric motor 20 can be increased. In the present embodiment, the length of the winding drum portion 5a is about 15 mm. In FIG. 9, even if the distance between the innermost outermost peripheral position 2e and the broken line 2e ′ is about 0.5 mm, the length of the winding drum portion 5a increases by about 3%, so that the output of about several% is output to the motor. An increase can be expected. The size of the casing 42 of the electric motor 20 is the same as that in the comparative example, and the insulation distance (d5) between the crimp terminal housing 10 and the casing 42 can be secured.

  In this embodiment, the salient poles 2a,..., 2a and the winding drum portions 5a,..., 5a are formed at nine locations, and the crimp terminal housing 10 and the crimp terminals 11 are dispersed at a plurality of locations (three locations). Therefore, a plurality of neutral points N can be formed while effectively using a narrow space on the insulator 5. Moreover, when this embodiment is used for a room air conditioner, the room temperature can be made to quickly follow the set temperature set by the user.

  When the stator 1 is fastened to the casing 42, it is desired to prevent the crimp terminal housing 10 from being deformed by heat generated during shrink fitting or welding. Therefore, the crimp terminal housing 10 is located outside the position shown in FIG. As described above, it is not appropriate to arrange in the above. Here, if the stator 1 is simply fastened to the casing 42, a fastening method that does not involve heating may be employed. However, as described with reference to FIG. 2, when the scroll compressor 201 is assembled, the lid chamber 44 and the bottom chamber 46 are welded to the casing 42, so that the temperature of the casing 42 is considerably increased. Therefore, a certain distance must be secured between the casing 42 and the crimp terminal housing 10 after all. The configuration in which the crimp terminal housing 10 is protruded inward from the innermost outermost peripheral position 2e of the stator core 2 and the distance d5 between the crimp terminal housing 10 and the casing 42 is ensured as in the present embodiment. When manufacturing the integrated compressor 201 that houses the electric motor 20 and the compression mechanism 30 in the sealed container 40, it is advantageous in that heat transfer to the crimp terminal housing 10 can be reduced.

[Second Embodiment]
Next, the air conditioner of 2nd Embodiment of this invention is demonstrated.
This embodiment is the same as the first embodiment in the configuration shown in FIGS. 1 to 8, but the arrangement of the crimp terminal housing 10 is slightly different, so the details will be described with reference to FIG. 10. FIG. 10 shows a cross-sectional view corresponding to the cross section AA ′ of FIG. 4 in the present embodiment. In this figure, the inner surface of the crimp terminal housing 10 protrudes inward by a protrusion length d3 with reference to the innermost outermost peripheral position 2e of the stator core 2. However, in the present embodiment, the protruding length d3 is equal to or less than the thickness d4 of the slot insulating paper 4.

  When the protruding length d3 is set to be equal to or less than the thickness d4 of the slot insulating paper 4, it is ensured that no interference occurs between the crimp terminal housing 10 and the coil nozzle 6. Accordingly, the winding 8 can be wound in a state where the tip 6a of the coil nozzle 6 is sufficiently close to the slot insulating paper 4. Further, it is not particularly necessary to make any changes to the winding track of the coil nozzle 6.

  Here, in the electric motor used for the compressor which compresses the refrigerant in the room air conditioner, the thickness d4 of the slot insulating paper 4 is preferably 0.05 mm to 0.75 mm. This is because if the thickness d4 is less than 0.05 mm, the insulation and mechanical strength may be insufficient, and if it exceeds 0.75 mm, there is a possibility that cracking may occur when bending along the shape of the slot 3. Because there is. In consideration of winding as many windings 8 as possible while providing sufficient margins for insulation and mechanical strength, the thickness d4 of the slot insulating paper 4 is more preferably 0.125 mm to 0.00. 5 mm. Accordingly, in this embodiment, the protruding length d3 of the crimp terminal housing 10 is also preferably 0.05 mm to 0.75 mm, and more preferably 0.125 mm to 0.5 mm.

  As described above, according to the present embodiment, the crimp terminal housing 10 is formed so as to protrude inward from the innermost outermost peripheral position 2e of the stator core 2 as in the first embodiment. As a result, a space for forming the crimp terminal housing 10 can be secured. Further, in the present embodiment, since the protruding length d3 is equal to or less than the thickness of the slot insulating paper 4, it is not necessary to consider an element such as “the collapse of the winding 8” as in the first embodiment.

[Third Embodiment]
Next, the air conditioner of 3rd Embodiment of this invention is demonstrated.
Although the present embodiment is the same as the first embodiment in the configuration shown in FIGS. 1 to 8, the arrangement of the crimp terminal housing 10 is slightly different, and the details will be described with reference to FIG. 11. In the first and second embodiments described above, the crimp terminal housing 10 is formed at an intermediate portion between the pair of winding body portions 5a and 5a (FIG. 4). The housing 10 is formed at the base portion of one winding body 5a.

Also in the present embodiment, as in the first and second embodiments, the crimp terminal housing 10 is formed so as to protrude inward from the innermost outermost peripheral position 2e of the stator core 2. Therefore, the crimp terminal housing 10 is formed such that a part thereof overlaps with the salient pole 2 a of the stator core 2 and the winding drum portion 5 a of the insulator 5 in the vertical direction. In FIG. 11, even if the coil nozzle tip 6a is located as close as possible to the inner surface 10c of the crimp terminal housing at the lower left in the drawing, it is at least the distance d6 because it is inside the slot insulating paper 4. Only separated. Therefore, according to the present embodiment, interference between the crimp terminal housing 10 and the coil nozzle 6 can be prevented in advance.
[Fourth Embodiment]
Next, an air conditioner according to a fourth embodiment of the present invention will be described.
Although the present embodiment is the same as the second embodiment in the configurations shown in FIGS. 1 to 8 and 10, the configuration of the slot insulating paper is slightly different, and the details will be described with reference to FIG. 12. In the present embodiment, instead of the slot insulating paper 4 in the second embodiment, two overlapped slot insulating papers 4a and 4b are used. The protrusion length d3 from the innermost outermost peripheral position 2e of the stator core 2 to the crimp terminal housing inner surface 10c is equal to or less than the total thickness d7 of the slot insulating papers 4a and 4b.

  Also in the present embodiment, as in the second embodiment, a space for forming the crimp terminal housing 10 can be secured while realizing the slot 3 having a large cross-sectional area, and the protruding length d3 is the sum of the slot insulating papers 4a and 4b. Since the thickness is equal to or less than d7, it is not necessary to take into account an element such as “the collapse of the winding 8” as in the first embodiment. Furthermore, according to the present embodiment, the degree of freedom in selecting slot insulating paper can be increased. As described above, in the second embodiment, when the thickness d4 of the slot insulating paper 4 is less than 0.05 mm, there is a possibility that the insulation and the mechanical strength may be insufficient. By stacking the slot insulating papers 4a and 4b, insulation and mechanical strength can be ensured as a whole, so that even a sheet having a thickness of less than 0.05 mm can be sufficiently applied.

[Modification]
The present invention is not limited to the above-described embodiment, and various modifications can be made as follows, for example.
(1) The rotating electrical machine of the present invention is not limited to an electric motor, and may be a generator. Needless to say, the number of salient poles, the number of phases, and the like of the stator core 2 are merely examples, and may be appropriately changed depending on the application. Further, even when the rotating electrical machine of the present invention is used as an electric motor, its use is not limited to a room air conditioner, and may be applied to, for example, a compressor of a heat pump type hot water supply apparatus.

  (2) In the fourth embodiment, the two slot insulating papers 4a and 4b are used in an overlapping manner, but instead of the two separate slot insulating papers 4a and 4b, one or a plurality of slots are used. Insulating paper may be folded and overlapped. Further, the number of times the slot insulating paper is overlapped is not limited to “2 times”, and may be overlapped 3 times or more.

  (3) In the above embodiments, the example in which the crimp terminal housing 10 is formed on the insulator 5 located on the upper side of the stator core 2 has been described. However, the crimp terminal housing 10 is formed on the lower insulator, and the lower side The neutral point N may be formed by an insulator.

  (4) In each of the above embodiments, an example in which a “crimp terminal” is applied as an example of a “connection terminal” has been described. However, the “connection terminal” is not limited to a “crimp terminal”; Various connection methods such as brazing and welding may be employed.

  (5) The present invention is not necessarily limited to those having all the configurations described in the above-described embodiments. In addition, a part of one embodiment can be replaced with the configuration of another embodiment, added, or deleted.

DESCRIPTION OF SYMBOLS 1 Stator 2 Stator core 2a Salient pole 2b Cylindrical part 2c Convex part 2d Concave part 2e Innermost outer periphery position 3 Slot 4 Slot insulating paper 5 Insulator 5a Winding trunk part 5b Outer wall part 5c Inner wall part 5d Outer wall part inner surface 6 Coil nozzle 6a Tip part 7 Passage 8 Winding 9 Interphase insulating paper 10 Crimp terminal housing (connection terminal housing)
DESCRIPTION OF SYMBOLS 10a Outer surface 10b Groove 10c Inner surface 11 Crimp terminal 14 Crossover wire 20 Electric motor (rotary electric machine)
30 Compression mechanism 40 Sealed container 42 Casing 42a Inner wall 201 Scroll compressor S Air conditioner

Claims (8)

A stator core having a cylindrical portion formed in a substantially cylindrical shape and a plurality of salient poles protruding inward from the inner wall of the cylindrical portion;
An outer wall provided at an end of the stator core and formed in a substantially annular shape; a plurality of winding drums positioned above the plurality of salient poles and projecting inward from the outer wall; and an inner surface of the stator core An insulator having a housing for connection terminals at least a part of which is located inside the outermost peripheral position;
A plurality of windings wound around the salient pole and the winding body, and connected to the connection terminal housing;
Have at the least a portion of the outer wall the inner surface of the insulator between the connecting terminal housing and the stator core, the stator of the rotary electric machine, characterized in that located outside the inner surface outermost peripheral position of the stator core . A stator core having a cylindrical portion formed in a substantially cylindrical shape and a plurality of salient poles protruding inward from the inner wall of the cylindrical portion;
An outer wall provided at an end of the stator core and formed in a substantially annular shape; a plurality of winding drums positioned above the plurality of salient poles and projecting inward from the outer wall; and an inner surface of the stator core An insulator having a housing for connection terminals at least a part of which is located inside the outermost peripheral position;
A plurality of windings wound around the salient pole and the winding body, and connected to the connection terminal housing;
Slot insulating paper folded along the inner surface shape of the slot formed by the adjacent one of the salient poles and the cylindrical portion ,
Have
The inner surface of the housing for connection terminal, from the inner surface outermost position of the stator core, rotary electric machine stator you characterized in that inwardly projecting only the slot insulating paper having a thickness less in length. The connection terminal housing is a crimp terminal housing,
A crimp terminal that is press-fitted into the crimp terminal housing and forms a neutral point by connecting the plurality of windings to each other;
The stator for a rotating electrical machine according to claim 1 or 2, wherein a plurality of the crimp terminal housings and the crimp terminals are provided, thereby forming a plurality of the neutral points. The at least part of the housing for connection terminals is formed at a position overlapping with any one of the plurality of salient poles and the plurality of winding body portions. The stator of the rotating electrical machine according to any one of 3. The slot insulating paper is a stack of a plurality of insulating papers, or one or a plurality of insulating papers folded and stacked.
The inner surface of the connection terminal housing protrudes inward from the outermost peripheral position of the inner surface of the stator core by a length equal to or less than the thickness of the plurality of insulating papers stacked or the thickness of one or more insulating papers folded and stacked. The stator for a rotating electrical machine according to claim 2.   The stator of a rotating electrical machine according to any one of claims 1 to 5, wherein the salient poles and the winding body portion are formed at 9 locations, and the rotating electrical machine has a sealed structure. An electric motor including the stator of the rotating electrical machine according to any one of claims 1 to 6;
A compression mechanism connected to the electric motor;
A compressor comprising: a sealed container that houses the electric motor and the compression mechanism in a sealed state. A compressor according to claim 7;
An indoor heat exchanger connected to the compressor;
An air conditioner comprising: the compressor and an outdoor heat exchanger connected to the indoor heat exchanger; and the compression mechanism section includes a scroll compression mechanism.

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