JP4607912B2 - Motor stator, motor and air conditioner - Google Patents

Description

  The present invention relates to a stator of an electric motor, an electric motor, an air conditioner, and a method of manufacturing the electric motor, in which an insulating portion is formed in a stator core that is punched and laminated in a belt shape and bent in a direction opposite to a predetermined direction. It is.

Teeth are arranged in parallel in order to improve productivity and quality by carrying out all terminal processing and crossover processing of the stator coil of the motor in which adjacent coils are out of phase in the connection side insulation. Insulation is applied to the stator core that is cored and punched out with a thin core back, and a coil is formed by winding a magnet wire around the insulation applied to the teeth. In the stator of the motor in which the coils of the coil are formed, the connecting wire between the coils is the insulation part on the outer diameter side of the stator core where the terminals are provided, and is the insulation part on the outside in the axial direction from the end face of the stator core Motors that are routed around the outer periphery of each section, the height of the inlet and outlet to the outer periphery of the connection-side insulating section of each phase of the connecting wire is almost the same, and the connecting wires of each phase are arranged in the axial direction without contact Stators have been proposed. In addition, the stator of the same motor is wound by bending a motor stator core formed by punching in a strip shape in a direction opposite to a predetermined direction (see, for example, Patent Document 1).
JP 2004-96838 A

  However, like the stator of the electric motor of Patent Document 1, the stator of the electric motor is formed by forming an insulating portion in a stator core punched and laminated in a band shape, and bending and winding in a direction opposite to a predetermined direction. There is a problem that the winding process takes time, the processing cost is high, the amount of terminals used is large, and the component cost is high.

  The present invention has been made in order to solve the above-described problems, and it is possible to simplify the machining, reduce the machining cost, and reduce the component cost, and the stator of the motor, the motor, the air conditioner, and the motor. An object is to provide a manufacturing method.

  The stator of the electric motor according to the present invention is formed by punching and laminating electromagnetic steel sheets in a strip shape, and having a stator core having a plurality of teeth, an insulating portion applied to the teeth of the stator core, and the insulating portion. In addition, in the stator of the electric motor provided with the three-phase single Y-connection winding applied to the teeth by a direct concentrated winding method, all the connecting wires of the winding are arranged on the connection side of the insulating portion, Fold the first phase winding arranged in the first stage closest to the axial end surface of the stator core and the second phase winding arranged in the second stage at the neutral point terminal. It is characterized by winding without cutting.

  The stator of the electric motor according to the present invention can reduce the processing cost by turning back the first-phase and second-phase windings at the neutral point terminal. In addition, by providing one neutral point terminal which has conventionally been required, the number of parts can be reduced and the cost can be reduced.

Embodiment 1 FIG.
1 to 7 show the first embodiment. FIG. 1 is a perspective view showing a state in which the stator 100 of the motor is reversely bent and wound, FIG. 2 is a perspective view of the terminal 4, and FIG. 4 is a perspective view of the sex point terminal 5, FIG. 4 is a diagram showing a winding procedure of the stator 100 of the motor ((a) is a winding procedure of the first phase (U phase), and (b) is a second phase (V phase). (C) is the third phase (W phase) winding procedure), FIG. 5 is a perspective view of the stator 100 of the motor, FIG. 6 is a diagram showing the motor 200, and FIG. It is a figure which shows a manufacturing process.

  In FIG. 1, a stator 100 of an electric motor includes a stator core 1 in which electromagnetic steel plates are punched in a strip shape and laminated by caulking, welding, adhesion, or the like. Here, the stator core 1 has twelve teeth 1a. An insulating part 3 is applied to each tooth 1a. The insulating portion 3 is formed integrally with the stator core 1 using, for example, a thermoplastic resin such as PBT (polybutylene terephthalate). However, you may assemble | attach the teeth 1a after shaping | molding the insulation part 3. FIG. In that case, it divides | segments into the connection side and the anti-connection side, and each inserts from the axial direction both ends of the teeth 1a, and comprises the insulation part 3. FIG. The insulating part 3 is provided for each tooth 1a. Accordingly, twelve insulating parts 3 are provided here.

  A terminal 4 to which a coil 2 of each phase (U phase, V phase, W phase) is connected and a neutral point terminal 5 are assembled on the connection side of the insulating portion 3.

  As shown in FIG. 1, the opening between the teeth 1 a is widened by bending in a direction opposite to the stator 100 of the electric motor after completion. This is for facilitating winding of the coil 2 around the teeth 1a. And the coil 2 is wound around each teeth 1a to which the insulation part 3 was given. That is, it is a concentrated winding method in which the coil 2 is wound directly around the teeth 1a. The winding is a three-phase single Y connection, which will be described later.

  As shown in FIG. 2, the terminal 4 is in the shape of an elongated flat plate, and includes a hook portion 4a for hooking the end of the coil 2 on its side portion.

  Further, as shown in FIG. 3, the neutral point terminal 5 has a substantially T shape, and includes a hook portion 5 a for hooking the coil 2 and having a fulcrum bent parallel to the longitudinal axis of the T shape. Has a protruding portion 5b in the upper portion for securely holding the magnet wire in the hook portion 5a.

  Furthermore, the insulating part 3 is provided with a protrusion 8 that holds the connecting wire of each phase at a predetermined position on the connection side, with the height from the axial end surface of the stator core 1 in a predetermined position.

  With reference to FIG. 4, a procedure for performing 12-slot three-phase single Y connection will be described. The coil 2 is applied in a state bent in the opposite direction to the stator 100 of the completed electric motor. Here, the coil 2 will be described with a belt-shaped development view.

  First, the first phase, the second phase, and the third phase are defined as follows. The first phase refers to a U-phase coil connected by connecting a crossover wire at a height closest to the end face of the stator core 1. The second phase refers to a V-phase coil connected to the second stage after the first phase by connecting a wire. The third phase refers to a W-phase coil connected by connecting a wire across the third stage after the second phase.

  The winding procedure for the first phase will be described with reference to FIG. The coil formed at the beginning of the first phase is connected to the insulating portion 3 of the third tooth 1a from one end portion (left end in FIG. 4A) of the stator core 1, as shown in FIG. The magnet wire is wound and formed. At this time, first, the end of the magnet wire that becomes the first phase winding 9 is hooked on the hook portion 4a of the terminal 4 inserted in the insulating portion 3 on the outer diameter side. After that, the first coil U-1 of the first phase is formed by winding the left-handed portion around the insulating portion 3 of the tooth 1a a predetermined number of times.

  After the coil 2 is formed, the jumper wire 2 a is drawn from the first-phase jumper wire lead-out portion 11 of the insulating portion 3 to the outer diameter side of the stator core 1.

  Provided on the opposite side of the insulating part 3 of the tooth 1a adjacent to the tooth 1a on which the first coil 2 of the first phase is formed (right in FIG. 4A) to the side where the crossover wire 2a has crossed. The crossover wire 2a is tangled to the first-phase crossover pin 12 one or more times to form a tie portion 13. From the curled portion 13, the connecting wire 2 a is again drawn out to the outer diameter side of the stator core 1.

  Furthermore, the connecting wire 2a is inserted from the first-phase connecting wire entrance 14 provided in the insulating portion 3 of the tooth 1a to which the one tooth 1a is blown off, in the first tooth 1a (in FIG. 4A, the sixth tooth 1a from the left side). ) And wound around the teeth 1a a predetermined number of times in the same manner as the first coil 2 to form the second coil U-2 of the first phase.

  At this time, the connecting wire 2a is held at a predetermined position from the axial end surface of the stator core 1 for each phase by the projection 8 provided outside the insulating portion 3, but the connecting wire 2a of the first phase is The first stage closest to the stator core 1 is drawn.

  Further, the notch of the insulating portion 3 on the side of the first phase crossover wire lead-out portion 11, the first phase crossover wire inlet 14, and the first phase crossover pin 12 (left side in FIG. 4A) is fixed. The height from the end surface of the core 1 is substantially the same.

  The third coil U-3 and the fourth coil U-4 of the first phase are also formed by drawing the connecting wire 2a in the same manner as the second coil U-2. The 4th coil U-4 is formed in the teeth 1a of the right end of Fig.4 (a). The magnet wire after the fourth coil U-4 as the last of the first phase is formed is the end of the first phase winding provided in the insulating portion 3 of the tooth 1a where the fourth coil U-4 is formed. It is pulled out from the drawer 15. The first phase is drawn in the direction opposite to the direction in which the crossover wire 2a is routed (leftward in FIG. 4 (a)), and is led to the insulating portion 3 provided in the adjacent tooth 1a. End of volume.

  Hereinafter, the winding procedure of the second phase (V phase) will be described with reference to FIG. At the end of the first phase winding, the first phase winding end provided on the insulating portion 3 of the tooth 1a where the first fourth coil V-4 of the adjacent second phase is formed is applied to the pin 16 at least once. I can get lost. Thereafter, the hook portion 5a (see FIG. 3) formed on the bald pin 16 side from the end of the first phase winding of the substantially T-shaped neutral point terminal 5 assembled to the insulating portion 3 of the same tooth 1a. Then, the teeth are drawn up to the teeth 1a and the second phase winding start 18 is reached. Since a magnet wire can be hooked on the protruding portion 5b provided at the tip of the hook portion 5a of the neutral point terminal 5 and the magnet wire can be surely accommodated in the hook portion 5a, the manufacturing quality can be improved.

  The second phase coil is continuously connected to the teeth 1a without cutting the magnet wire hooked to the hook portion 5a of the neutral point terminal 5 in the direction opposite to the first phase coil (right-handed). A predetermined number of windings are formed. After the first fourth coil V-4 of the second phase is formed, the second-phase crossover wire 2b is drawn from the second-phase crossover lead-out portion 19 to the outer peripheral side of the stator core 1.

  Insulation of the adjacent teeth 1a (third from the right in FIG. 4B) across the direction opposite to the direction in which the first-phase connecting wire 2a is routed (leftward in FIG. 4B) It is tangled at least once by the second phase crossover pin 20 provided on the side opposite to the side where the crossover wire 2b of the portion 3 has crossed to form a fold portion.

  Further, the teeth 1a are routed to the teeth 1a from the second-phase crossover entrance 21 provided in the insulating portion 3 of the previous teeth 1a (fifth from the right). Similarly to the first fourth coil V-4, the third coil V-3 of the second phase is formed by winding the tooth 1a clockwise a predetermined number of times.

  At this time, the connecting wire 2b of the second phase is routed to the height position of the second step from the end face of the stator core 1 (separated by the protrusion 8). Similarly to the first phase, the second phase connecting wire lead-out portion 19, the second phase connecting wire entrance 21, and the insulating portion next to the second phase connecting pin 20 (right side in FIG. 4B). The notches 3 have substantially the same height from the end face of the stator core 1.

  Similarly to the formation of the third coil V-3, the second coil V-2 and the first coil V-1 of the second phase are also connected to form the coils. The magnet wire after the first coil V-1 that is the last of the second phase is formed is the tooth 1a on which the first coil V-1 of the second phase is formed (the left end in FIG. 4B). 2), the hook is placed on the hook portion 4a of the terminal 4 assembled to the same insulating portion 3, and is then attached to the pin 24 at the end of the second phase winding. By winding, the end of the second phase winding 23 is formed and cut.

  As described above, the fourth coil V-4 formed at the beginning of the second phase is adjacent to the fourth coil U-4 formed at the end of the first phase. Therefore, the distance that the winding equipment moves to a predetermined position is minimized. Therefore, the processing time can be reduced, and the processing cost can be reduced.

  Further, since the first phase and the second phase can be continuously drawn without being cut, the step of cutting the magnet wire is unnecessary. Furthermore, the processing time can be reduced and the processing cost can be reduced.

  Hereinafter, the winding procedure of the third phase (W phase) will be described with reference to FIG. The first coil W-1 formed at the beginning of the third phase is adjacent to the tooth 1a (second from the left) where the first coil V-1 which is the last of the second phase is formed. Left end).

  Similarly to the first phase, first, the end of the magnet wire that becomes the start 25 of the third phase is hooked on the hook portion 4a of the terminal 4 inserted in the insulating portion 3 on the outer diameter side. After that, the insulating coil 3 of the tooth 1a is wound a predetermined number of times in a left-handed manner to form the first coil W-1 for the third phase.

  The connecting wire 2c is drawn from the third-phase connecting wire lead-out portion 26 to the outer peripheral side of the stator core 1. And it is drawn to the third phase crossover pin 27 provided next to the second phase crossover line entrance 21 provided in the insulating portion 3 of the adjacent tooth 1a (second from the left). From the third phase crossing pin 27, the pin 27 is bent once or more to form a curled portion.

  Further, the teeth 1a are routed to the teeth 1a from the third-phase crossover entrance 28 provided in the insulating portion 3 of the previous teeth 1a (fourth from the left). Then, similarly to the first first coil W-1, the tooth 1a is wound a left turn a predetermined number of times to form a second coil W-2 for the third phase.

  At this time, the third-phase connecting wire 2 c crosses the height position farthest from the end face of the stator core 1. The height from the end face of the stator core 1 is substantially the same in the three-phase crossover wire lead-out portion 26 and the three-phase crossover wire inlet 28.

  In addition, the third phase crossover lead portion 26 provided in the insulating portion 3 in which the third phase second coil W-2, the third coil W-3, and the fourth coil W-4 are formed, and the three phase By providing the crossover wire entrance 28 separately from the notch provided on the side of the 1st phase crossover pin 12 and the 2nd phase crossover pin 20, it is possible to prevent the crossover wires of different phases from contacting each other. is doing.

  After the fourth coil W-4, which is the last of the third phase, is formed, the magnet wire is drawn from the third-phase crossover lead-out portion 26 (formed on the third tooth 1a from the right).

  Furthermore, it is routed from the end of the third phase winding of the insulating portion 3 including the neutral point terminal 5 to the bald pin 29. At the end of the third phase winding, the winding pin 29 is wound once or more, and then hooked to the hook portion 5a on the side of the third phase winding of the neutral point terminal 5 on the side of the bending pin 29. Then, pull it back to the bald pin 29 from the end of the third phase winding. At the end of the third phase winding, the winding pin 29 is wound at least once to finish the third phase winding, and the end of the magnet wire is cut to finish the winding process.

  Thus, the first coil W-1 formed at the beginning of the third phase is adjacent (right adjacent) to the first coil V-1 formed at the end of the second phase. Accordingly, the moving distance to the predetermined position of the winding equipment is minimized. Therefore, the processing time can be reduced, and the processing cost can be reduced.

  After the winding process is completed, the stator core 1 is bent in a predetermined direction into a substantially donut shape, and the stator core butt portion 31 of the stator core 1 is welded and fixed by the welded portion 32 (see FIG. 5). ). At this time, the connecting wires 2a, 2b, 2c of each phase are held at predetermined positions by the protrusions 8 provided on the outer peripheral side of the insulating portion 3, and the connecting wires 2a, 2b, 2c of each phase are not in contact with each other. The quality can be improved. However, in FIG. 5, the connecting wires 2a, 2b, 2c are not shown.

  Further, by fusing the terminal 4 and the neutral point terminal 5, the magnet wire, the terminal 4 and the neutral point terminal 5 are electrically and mechanically joined. In general, each phase has a neutral point terminal 5. On the other hand, in this embodiment, the number of parts can be reduced and the cost can be reduced by covering the neutral point terminal 5 with one. Moreover, since it is not necessary to use another part for the neutral point, further cost reduction is possible. Furthermore, since the number of fusing locations can be reduced, the processing cost can be further reduced.

  Although the stator 100 of the electric motor according to the present embodiment has been described with the first phase being the U phase, the 12-slot single Y connection starting from the third tooth 1a from the left is started by left-hand winding. Needless to say, the method is also applied to the connection method.

  FIG. 6 shows the electric motor 200. The electric motor 200 includes a rotor 38, a bracket 39, a mold stator 40 obtained by molding the electric motor stator 100, a connection component 41 (substrate), and the like.

  As shown in FIG. 6, the connection component 41 connected with the exterior is assembled | attached to the stator 100 of the electric motor of this Embodiment, and it molds, after joining also mechanically and electrically. Thereafter, parts such as the rotor 38 and the bracket 39 are assembled to form the electric motor 200.

  By using the above-described high-quality and low-cost motor stator 100, a high-quality and low-cost electric motor 200 can be obtained.

FIG. 7 shows a manufacturing process of the electric motor.
(1) Step 1: A magnetic steel sheet is punched out and laminated to manufacture a band-shaped stator core 1.
(2) Step 2: The insulating part 3 is formed integrally with the stator core 1 using a thermoplastic resin. However, you may assemble | attach the teeth 1a after shaping | molding the insulation part 3. FIG. In parallel, the terminal 4 and the neutral point terminal 5 are manufactured.
(3) Step 3: Insert the terminal 4 (three) and the neutral point terminal 5 (one) into the connection side of the insulating portion 3.
(4) Step 4: The band-shaped stator core 1 is reversely bent to a side opposite to a predetermined direction (direction in which the opening between the teeth 1a spreads).
(5) Step 5: The first phase and the second phase in the three-phase single Y connection are continuously wound without cutting the magnet wire.
(6) Step 6: Wind the third phase in the same way as the first phase.
(7) Step 7: The stator core 1 that has been reversely bent is returned to a predetermined forward bending.
(8) Step 8: The joint portion of the stator core 1 is welded.
(9) Step 9: Fusing the terminal 4 and the neutral point terminal 5 is performed. In parallel, the wiring component 41 is manufactured.
(10) Step 10: The connecting component 41 is assembled and joined to the stator 100 of the electric motor.
(11) Step 11: The stator 100 of the electric motor is molded. In parallel, other parts such as the rotor 38 and the bracket 39 are manufactured.
(12) Step 12: Assemble the electric motor 200.

  By manufacturing the electric motor 200 in the manufacturing process shown in FIG. 7, the electric motor 200 can be manufactured with excellent productivity and efficiency.

Embodiment 2. FIG.
8 and 9 are diagrams showing the second embodiment. FIG. 8 is a partial perspective view showing a state where the stator 100 of the motor is reversely bent and wound, and FIG. 9 is a perspective view of the square wire terminal 33. .

  As shown in FIGS. 8 and 9, in this embodiment, a square wire terminal 33 formed by bending a square wire is used instead of the terminal 4 of the first embodiment. The square wire terminal 33 is inserted into a hole provided in the insulating portion 3 at one end (lower portion in FIG. 9) of the square wire. The other end (upper part in FIG. 10) is used for the joint 35 that is joined to the connection component 41. The horizontal bending hook part 34 in the meantime is formed by being bent at 90 degrees with respect to the axis.

  The insulating portion 3 is provided at the winding start pin 36 (in FIG. 8, the insulating portion 3 of the first and third teeth 1a from the left. For the third phase and the first phase winding start pinch. ) And a winding end pin 37 (provided in the insulating portion 3 of the second tooth 1a from the left in FIG. 8 for ending the second phase winding).

  Three square wire terminals 33 are used. Two are the first and third phase winding start terminals (inserted in the insulating portion 3 of the first and third teeth 1a from the left in FIG. 8), and the first is the second phase winding end terminal. (Inserted into the insulating portion 3 of the second tooth 1a from the left in FIG. 8).

  As already described, the insulating portion 3 of the tooth 1a in which the first first coil U-1 of the first phase and the first first coil W-1 of the third phase are formed has a rectangular wire. In addition to the terminal 33, a winding start pin 36 is provided. The ends of the magnet wires are wound on the winding pins 36 one or more times from each winding start, and are then housed in the lateral bending hook portion 34 of the square wire terminal 33, and are drawn and wound to the teeth 1a.

  When the magnet wire is accommodated in the lateral bending hook portion 34, the magnet wire is guided to the joint portion 35 of the square wire terminal 33 and is securely accommodated in the lateral bending hook portion 34. Therefore, the quality in manufacturing can be improved. In addition, compared to the terminal 4 manufactured by punching a copper plate, the rectangular wire terminal 33 has no loss portion, so that the component cost can be reduced.

  Coil formation and crossover routing are the same as in the first embodiment. The square wire terminal 33 can also be applied to post-processing after the first coil V-1 that is the last of the second phase is formed. As shown in FIG. 8, after the first coil V-1 of the second phase is formed, the magnet wire is laterally bent while being hung on the joint portion 35 of the square wire terminal 33 provided in the insulating portion 3 of the tooth 1a. Guided to the hook portion 34. Further, it is drawn from the end of the winding to the bald pin 37 and tangled one or more times to be cut. The effect is the same as that of the first-phase and third-phase rectangular terminals 33, and it is possible to improve manufacturing quality and reduce component costs.

  The configuration and manufacturing process of the electric motor 200 are the same as those in the first embodiment.

Embodiment 3 FIG.
FIG. 10 is a diagram illustrating a configuration of the air conditioner 300. As shown in FIG. 10, the air conditioner 300 includes an indoor unit 42 and an outdoor unit 43 connected to the indoor unit 42. The outdoor unit 43 includes a blower 44. The indoor unit 42 also includes a blower (not shown).

  The quality of the air conditioner 300 can be improved by using the high-quality electric motor 200 of the first embodiment or the second embodiment as an electric motor for a blower that is a main part of the air conditioner 300 for the indoor unit 42 and the outdoor unit 43. Improvement can be achieved.

FIG. 5 shows the first embodiment, and is a perspective view showing a state where the stator 100 of the motor is reversely bent and wound. FIG. 5 shows the first embodiment and is a perspective view of a terminal 4. FIG. 3 is a diagram showing the first embodiment, and is a perspective view of a neutral point terminal 5; FIG. 5 is a diagram illustrating the first embodiment, and is a diagram illustrating a winding procedure of the stator 100 of the motor ((a) is a winding procedure of the first phase (U phase), and (b) is a second phase (V phase). Winding procedure, (c) is the third phase (W phase) winding procedure). FIG. 3 shows the first embodiment, and is a perspective view of a stator 100 of the electric motor. FIG. 3 shows the first embodiment and shows the electric motor 200. FIG. 5 shows the first embodiment, and shows a manufacturing process of the electric motor 200. FIG. 10 is a partial perspective view showing a state in which the stator 100 of the electric motor is reversely bent and wound, showing the second embodiment. FIG. 5 is a diagram showing the second embodiment, and is a perspective view of a rectangular terminal 33. FIG. The figure which shows the structure of the air conditioner 300. FIG.

Explanation of symbols

  1 Stator Core, 2 Coil, 2a Crossover, 2b Crossover, 2c Crossover, 3 Insulation, 4 Terminal, 4a Hook, 5 Neutral Point Terminal, 5a Hook, 5b Projection, 8 Projection, 9 1st phase winding start, 11 1st phase crossover lead section, 12 1st phase crossover pin, 13 curled up section, 14 1st phase crossover entrance, 15 1st phase end of winding section, 16 1st phase End of winding pin, 18 Start of second phase winding, 19 Second phase crossover lead portion, 20 Second phase crossover pin, 21 Second phase crossover inlet, 22 End of second phase winding portion, 23 2nd phase end of winding, 24 2nd phase end of winding pin, 25 3rd phase winding start, 26 3rd phase crossover lead section, 27 3rd phase crossover pin, 28 3rd phase crossover entrance, 29 3rd phase winding end pin, 31 Stator core butt, 32 weld, 3 Square terminal, 34 Lateral bending hook part, 35 Joint part, 36 Winding pin at the beginning of winding, 37 Winding pin at the end of winding, 38 Rotor, 39 Bracket, 40 Mold stator, 41 Connecting parts, 42 Indoor unit, 43 Outdoor Machine, 44 blower, 100 motor stator, 200 motor, 300 air conditioner.

Claims (8)

Magnetic steel sheet is punched and laminated in a strip shape, and a stator core having 12 teeth, an insulating portion applied to the teeth of the stator core, and a direct concentrated winding method on the teeth provided with the insulating portion In the stator of the motor with the winding of the three-phase single Y connection applied by
The windings of each phase forming the winding of the three-phase single Y connection jump to two of the teeth of the strip-shaped stator core so that the current flows in the same direction. Applied,
All the connecting wires of the windings are arranged on the connection side of the insulating portion, and the connecting wires are arranged in the first stage closest to the axial end surface of the stator core; Fold the second-phase winding arranged in the second stage at the neutral point terminal, wind without cutting ,
The first coil formed at the beginning of the first phase is formed on the third tooth from one end of the band-shaped stator core, and the neutral point terminal that is turned back is the band-shaped. An electric motor, wherein the electric motor is disposed on the second tooth from the other end of the stator core, and the first fourth coil of the second phase is formed on the second tooth from the other end. Stator. In the step of performing the winding of the three-phase single Y connection, the stator core is bent in a direction opposite to a predetermined direction, and the winding of each phase is adjacent to the teeth forming one coil. provided in the insulating portion of the teeth, crossing tied the wound and the crossover to the pins, the stator of the motor according to claim 1 which is characterized by forming the crossover following coil to a predetermined tooth. The neutral point terminal is substantially T-shaped, and, according to claim 1 or claim 2 stator of the electric motor according to, characterized in that it comprises a hook portion bent parallel to the longitudinal axis of said T-shaped fulcrum. The stator of the electric motor according to claim 3 , further comprising a protruding portion at a tip of the hook portion of the neutral point terminal.   The terminals of the windings of each phase are connected, and the terminals to be joined to the wiring components are constituted by square wire terminals, and the terminals of the windings of each phase and the square wire terminals are joined by fusing. The stator of the electric motor according to claim 1. 6. The electric motor according to claim 5, wherein the hook portion of the rectangular wire terminal is formed to be bent at about 90 degrees with respect to the direction in which the rectangular wire terminal is inserted into the insulating portion. stator. An electric motor using the stator of the electric motor according to any one of claims 1 to 6 . An air conditioner equipped with the electric motor according to claim 7 .

Images