JP2009254203A - Stator of electric motor, electric motor, blower, pump, air-conditioner, and method of manufacturing electric motor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stator of electric motor capable of reducing the fabrication cost by simplifying the fabrication, reducing the parts cost, and also capable of lowering the price of a neutral point terminal. <P>SOLUTION: The stator of electric motor is equipped with a stator iron core formed by laminating a magnetic steel sheet punched like strips and having a plurality of teeth, insulating parts applied to the teeth of the stator iron core, and a coil of three-phase single Y-connection line directly applied to the teeth having insulating parts applied to them by concentrated winding method. All of crossover lines are arranged on the connection line side of the insulating part, a first phase coil where the crossover line arranged at a first stage nearest to the end face in the axial direction of the stator iron core and a second phase coil where the crossover line is arranged at a second stage, are folded back at the neutral point terminal, wound without being cut, and three pieces of terminals for supplying power to the coils of the three-phase single Y-connection line to be inserted to the connection line side of the insulating part and the neutral point terminal, are formed by bending rectangular wires. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

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

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 provided on the teeth. In the stator of the motor in which the coils of the coil are formed, the connecting wire between the coils is an insulation part on the outer diameter side of the stator core where the terminals are provided, and is an insulation part on the outer side 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 above, the stator of the electric motor that forms an insulating portion on the stator core that is punched and laminated in a strip shape, and bends and winds 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.

  Further, since the neutral point terminal is manufactured by punching a copper plate, there is a problem that the cost is high due to material loss.

  The present invention has been made to solve the above-described problems, and can fix a motor that can simplify processing and reduce processing costs, reduce component costs, and reduce the price of a neutral point terminal. An object is to provide a child, an electric motor, a blower, a pump, an air conditioner, and a method for manufacturing the electric motor.

The stator of the electric motor according to the present invention is obtained 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 the stator of an electric motor having a three-phase single Y-connection winding applied to the teeth by a direct concentrated winding method,
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, and in the second stage Fold the winding of the arranged second phase at the neutral point terminal, wind without cutting,
Three terminals for supplying power to a winding of a three-phase single Y connection inserted on the connection side of the insulating portion and a neutral point terminal are formed by bending a square line.

  In the stator of the electric motor according to the present invention, the cost can be reduced by manufacturing the terminal for supplying power and the neutral point terminal by bending the square wire.

Embodiment 1 FIG.
FIG. 1 to FIG. 9 are diagrams showing the first embodiment. FIG. 1 is a perspective view showing a state where 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 a neutral point terminal 5 of a modified example, and FIG. 5 is a diagram showing a winding procedure of a stator 100 of an electric motor ((a) is a first phase (U phase). (B) is the second phase (V phase) winding procedure, (c) is the third phase (W phase) winding procedure), FIG. 6 is a perspective view of the stator 100 of the motor, 7 is a partially enlarged view near the neutral point terminal 5, FIG. 8 is a view showing the electric motor 200, and FIG. 9 is a view showing a manufacturing process of the electric motor 200. FIG.

  In FIG. 1, a stator 100 of an electric motor includes a stator core 1 in which an electromagnetic steel sheet having a thickness of about 0.1 to 0.7 mm is punched into 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, the insulating part 3 is divided into a connection side and an anti-connection side, and each is inserted from both ends in the axial direction of the tooth 1a to constitute the insulating part 3. The insulating part 3 is provided for each tooth 1a. Accordingly, twelve insulating parts 3 are provided here.

  The winding will be described later, but is a three-phase single Y connection. Therefore, a terminal 4 (a terminal to which power is supplied) to which the coil 2 of each phase (U phase, V phase, W phase) is connected and a neutral point terminal 5 are provided on the connection side of the insulating portion 3. It is assembled. There are three terminals 4 and one neutral point terminal 5.

  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. In the completed stator 100 of the electric motor, the teeth 1a are on the inside, but the teeth 1a are on the outside by bending in the opposite direction. 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.

  The terminal 4 shown in FIG. 2 is formed by bending a rectangular wire. The flat wire is made of copper and, for example, a tin-copper alloy is hot-plated. In one example, the flat wire has a thickness of 0.5 mm and a width of 1.0 mm.

  The terminal 4 is bent by approximately 90 ° with respect to the insertion portion 4 b into which the terminal 4 is inserted into a square hole (not shown) provided with a rectangular wire in the insulating portion 3. It is formed by bending approximately 180 ° at a predetermined position to form the folded portion 4a, and further bending approximately 90 ° so as to extend substantially opposite to the insertion portion 4b inserted into the insulating portion 3.

  The neutral point terminal 5 shown in FIG. 3 uses the same rectangular wire as the terminal 4. The rectangular wire is bent approximately 90 ° with respect to the insertion portion 5d for inserting the neutral point terminal 5 into a square hole (not shown) provided in the insulating portion 3. The first folded portion 5a is formed by bending approximately 180 ° at a predetermined position. Further, the second folded portion 5b is formed by bending approximately 180 ° toward the insertion portion 5d at a position that is substantially symmetrical with respect to the insertion portion 5d to the insulating portion 3. An opening 5c is provided between the tip 5b-1 of the second folded portion 5b and the insertion portion 5d to the insulating portion 3.

  In addition, although the example which uses a flat wire for the terminal 4 and the neutral point terminal 5 was demonstrated, it may not be a flat wire but should just be a square wire.

  Further, when the width W is not limited, the neutral point terminal 5 may bend the first folded portion 5a and the second folded portion 5b in opposite directions as shown in FIG.

  A routing projection 7 for the neutral point terminal 5 is provided on the connection side of the insulating portion 3 to which the neutral point terminal 5 is assembled.

  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. 5, 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.

  With reference to FIG. 5 (a), the winding procedure of the first U-phase will be described. As shown in FIG. 5A, 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 of the stator core 1 (the left end in FIG. 5A). The magnet wire is wound and formed.

  First, the end of the magnet wire is drawn around the first phase winding start bald pin 10 provided on the outer diameter side of the insulating portion 3. Thereafter, a magnet wire that is the start of winding of the first phase is hooked on the folded portion 4a of the terminal 4 inserted into the square hole provided in the insulating portion 3. Then, the first coil U-1 of the first phase is formed by winding the insulating portion 3 formed in the tooth 1a a predetermined number of times in a left-handed manner.

  After the coil U- 1 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.

  On the opposite side of the insulating portion 3 of the tooth 1a adjacent to the tooth 1a on which the first coil U-1 of the first phase is formed (right in FIG. 5A) to the side where the crossover wire 2a has crossed. The connecting wire 2a is tangled one or more times to the provided first-phase crossing pin 12 to form the tangled 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 tooth 1a (in FIG. 5A, 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 U-1, and the second coil U-2 of the first phase is formed.

  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 for the first phase. Is routed to the first stage closest to the stator core 1.

  Further, the notch 50 of the insulating portion 3 next to 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. 5A) The height from the axial end surface of the stator 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.5 (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. 5A), and is led to the insulating portion 3 provided in the adjacent tooth 1a. End of volume.

  At this time, the neutral point terminal 5 is set so that the height of the lead-out portion 15 at the end of the first phase winding is higher than the height of the first folded portion 5a and the second folded portion 5b of the neutral point terminal 5. As a result, the magnet wire can be easily routed, and productivity and manufacturing quality can be improved.

  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.

  A substantially T-shaped neutral point terminal 5 is assembled using the routing protrusion 7 of the neutral point terminal 5 provided on the insulating portion 3 of the tooth 1a where the fourth coil V-4 is formed. After being hooked on the first turn-up portion 5a, it is routed to the teeth 1a and becomes the second phase winding start 18.

  By hooking the magnet wire on the routing protrusion 7 of the neutral point terminal 5, the magnet wire can be securely stored in the first folded portion 5 a of the neutral point terminal 5. I can plan.

  Here, hooking the magnet wire on the routing protrusion 7 of the neutral point terminal 5 has the following implications. This will be described with reference to FIG. That is, the end of the first phase winding is entangled with the pin 16 at the end of the first phase winding, and the magnet wire at the beginning of the second phase winding is first pulled toward the teeth 1a with the nozzle. After the magnet wire has passed the routing projection 7, the magnet wire at the beginning of the second phase winding 18 is pulled toward the anti-teeth 1a side (the outer peripheral side of the stator 100 of the electric motor). Since the routing protrusion 7 protrudes outward in the axial direction from the neutral point terminal 5, the magnet wire can be applied to the routing protrusion 7 in this state. Next, while maintaining the state in which the magnet wire is routed and applied to the projection 7, the nozzle is lowered from the second folded portion 5 b, passes through the left side of the second folded portion 5 b, and enters the inside of the stator core 1 (see FIG. 7 moves downward). Then, the magnet wire enters the neutral point terminal 5 from the opening 5 c of the neutral point terminal 5. And if a nozzle is moved to the 1st folding | turning part 5a side, a magnet wire will be hung on the 1st folding | turning part 5a of the neutral point terminal 5. FIG.

  The first fourth coil V-4 of the second phase is hooked to the first folded portion 5a of the neutral point terminal 5, and continuously to the teeth 1a without cutting the magnet wire. A predetermined number of turns are formed in the direction opposite to the coil (right-handed).

  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 tooth 1a (third from the right in FIG. 5B) across the direction opposite to the direction in which the first-phase connecting wire 2a is routed (leftward in FIG. 5B) The tangled portion 51 is formed by being tangled one or more times by the second-phase crossover pin 20 provided on the opposite side of the portion 3 where the crossover wire 2b has crossed.

  Further, the teeth 1a are routed to the teeth 1a from the two-phase crossover wire entrance 21 provided in the insulating portion 3 of the previous teeth 1a (fifth from the right in FIG. 5B). 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 two-phase connecting wire lead-out portion 19, the two-phase connecting wire inlet 21, and the insulating portion on the side of the second-phase connecting pin 20 (right side in FIG. 5B). The three cutouts 52 have substantially the same height from the axial end surface 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 as the last of the second phase is formed is connected to the folded portion 4a of the terminal 4 assembled to the insulating portion 3 to which the first coil V-1 is applied. Can be stored.

  The second phase winding end 23 is wound around the bald pin 24 from the second phase winding end, and the second phase winding end 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. Since the movement distance to the position is minimized, the machining time can be reduced, and the machining cost can be reduced.

  Furthermore, since the first phase and the second phase can be continuously routed without cutting, the process of cutting the magnet wire is not required, and the processing time can be reduced, resulting in a reduction in processing costs. Can be planned.

  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).

  The first coil W-1 formed at the beginning of the third phase starts the third phase winding after the end of the magnet wire is drawn around the bald pin 60 at the beginning of the third phase winding like the first phase. 25 is routed to the insulating portion 3 provided on the tooth 1a through the folded portion 4a of the terminal 4, and is wound around the tooth 1a a predetermined number of times in a left-handed manner to form the first coil W-1.

  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, it is bent once or more to form the curled portion 53.

  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 line entrance 28 separately from the cutout 50 provided on the side of the first phase crossover pin 12 and the cutout 52 provided on the side of the double phase crossover pin 20, the crossover lines of different phases To avoid contact.

  After the fourth coil W-4, which is the last of the third phase, is formed, the magnet wire is formed on the third phase crossover lead portion 26 (formed on the third tooth 1a from the right in FIG. 5C). More drawn.

  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. After tangling to the bald pin 29 one or more times from the end of the third phase winding, it is hung on the second folded portion 5b of the neutral point terminal 5, and then pulled back to the bald pin 29 again 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 complete the third phase winding, and the end of the magnet wire is cut to complete the winding process (see also FIG. 7).

  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 63 of the stator core 1 is welded and fixed by the welded portion 64 (see FIG. 6). ).

  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. Therefore, quality can be improved. However, in FIG. 6, the connecting lines 2a, 2b, 2c are not shown.

  Furthermore, 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 to form the stator 100 of the electric motor.

  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.

  Here, the neutral point terminal 5 for generating the neutral point is made of the same material (flat wire) as that of the terminal 4 for supplying power, thereby reducing the cost.

  FIG. 8 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. 8, 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. 9 shows a manufacturing process of the electric motor 200.
(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 flat wire is bent to produce the terminal 4 and the neutral point terminal 5.
(3) Step 3: Insert the terminal 4 (three) and the neutral point terminal 5 (one) on 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: Return the reversely bent stator core 1 to a predetermined forward bending.
(8) Step 8: The stator core butting portion 63 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. 9, the electric motor 200 can be manufactured with excellent productivity and efficiency.

  As described above, according to this embodiment, the magnet wire is securely attached to the first folded portion 5 a of the neutral point terminal 5 by hooking the magnet wire on the routing protrusion 7 of the neutral point terminal 5. Since it can be accommodated, the manufacturing quality can be improved.

  Further, 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, so that the winding equipment is in a predetermined position. Since the movement distance to the minimum is possible, the machining time can be reduced and the machining cost can be reduced.

  In addition, since the first phase and the second phase can be continuously routed without cutting, the process of cutting the magnet wire is not necessary, and the processing time can be reduced and the processing cost can be reduced. Can be planned.

  Further, 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.

  In general, the neutral point terminal 5 is provided for each phase. However, in the present embodiment, by providing the neutral point terminal 5 with one, the number of parts can be reduced and the cost can be reduced. .

  Moreover, the cost can be reduced by making the neutral point terminal 5 for producing the neutral point the same material (flat wire) as the terminal 4 for supplying power.

  Further, by using the motor stator 100 with good quality and reduced cost, the motor 200 with good quality and low cost can be obtained.

  Further, by manufacturing the electric motor 200 in the manufacturing process shown in FIG. 9, the electric motor 200 can be manufactured with excellent productivity and efficiency.

Embodiment 2. FIG.
FIG. 10 is a diagram showing the second embodiment, and is a diagram showing 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 Embodiment 1 as the blower motor, which is the main component of the air conditioner 300, for the indoor unit 42 and the outdoor unit 43.

Embodiment 3 FIG.
FIG. 11 is a cross-sectional view of the pump 400 showing the third embodiment.

The pump 400 shown in FIG. 11 has the following configuration. That is, the pump 400
(A) A wiring component 41 (substrate) is assembled to the stator 100 of the electric motor according to the first embodiment, and a resin molded product seal box 140 that partitions water and the stator in the pump 400 is molded integrally. A stator 170 for the pump motor to be manufactured;
(B) A shaft 96 that is manufactured using SUS, ceramic, or the like, one end of which is inserted into the shaft support provided in the seal box 140, and the other end supported by the shaft support of the casing 90 of the resin molded product;
(C) A rotor 150 in which a ring-shaped heat-resistant water-made magnet 150a and a cylindrical sleeve 150b disposed inside the magnet 150a are integrally formed of a thermoplastic resin such as PPE (polyphenylene ether). When,
(D) an impeller 160 of a resin molded product that is joined to the rotor 150 by ultrasonic welding or the like and is rotatably installed around the shaft 96;
(E) a thrust bearing 95 made of SUS, ceramic, or the like, which is installed with a predetermined gap on both end faces of the sleeve 150b;
After the O-ring 97 is installed in the seal box 140, the casing 90, the stator 170 for the pump motor, and the foot plate 93 are fastened together by the tapping screws 91 or the like.

  As described above, by using the stator 100 of the electric motor according to the first embodiment for the pump 400, the cost and quality of the pump 400 can be reduced.

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 shows the first embodiment, and is a perspective view of a neutral point terminal 5 of a modified example. 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. 5 shows the first embodiment, and is a partially enlarged view near a neutral point terminal 5; 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. 6 shows the second embodiment and shows the structure of the air conditioner 300. FIG. FIG. 5 shows the third embodiment and is a cross-sectional view of a pump 400.

Explanation of symbols

  1 Stator Core, 2 Coil, 2a Crossover, 2b Crossover, 2c Crossover, 3 Insulation, 4 Terminal, 4a Folding, 4b Insertion, 5 Neutral Point Terminal, 5a First Folding, 5b First Second turn-up portion, 5b-1 tip portion, 5c opening portion, 5d insertion portion, 7 routing projection, 8 projection, 9 start of first phase winding, 10 start of first phase winding, 11 first phase crossover wire Drawer, 12 1st phase crossover pin, 13 1st phase crossover, 14 1st phase crossover entrance, 15 1st phase end of winding, 16 1st phase end of bald pin, 18 2nd phase start of winding , 19 Phase 2 crossover lead section, 20 Phase 2 crossover pin, 21 Phase 2 crossover entrance, 22 Phase 2 end hook, 23 Phase 2 end, 24 Phase 2 end Karage Pin, 25 3rd phase winding start, 26 3rd phase crossover lead 27, 3rd phase crossover pin, 28 3rd phase crossover wire entrance, 29 3rd phase end of winding pin, 38 rotor, 39 bracket, 40 mold stator, 41 connection parts, 42 indoor unit, 43 outdoor Machine, 44 blower, 50 notch, 51 bald part, 52 notch, 53 bald part, 60 third phase winding start bald pin, 63 stator core butting part, 64 welded part, 90 casing, 91 tapping screw , 93 Foot plate, 95 Thrust bearing, 96 shaft, 97 O-ring, 100 Motor stator, 140 Seal box, 150 Rotor, 150a Magnet, 150b Sleeve, 160 impeller, 170 Pump motor stator, 200 Motor , 300 Air conditioner, 400 Pump.

Claims (10)

A stator iron core having a plurality of teeth punched and laminated in the shape of an electromagnetic steel sheet, an insulating portion applied to the teeth of the stator iron core, and a direct concentrated winding method on the teeth provided with the insulating portion. In the stator of the motor with the three-phase single Y-connection winding 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,
3. An electric motor characterized in that three terminals for supplying power to the winding of the three-phase single Y connection inserted on the connection side of the insulating portion and the neutral point terminal are formed by bending square wires. Stator.   The neutral point terminal is substantially T-shaped, bent about 90 ° with respect to the insertion portion of the neutral point terminal inserted into the insulating portion, and bent about 180 ° at a predetermined position to form the first folded portion. And forming a second folded portion by bending approximately 180 ° toward the insertion portion at a position that is substantially symmetric with respect to the insertion portion, and forming a second folded portion between the distal end portion of the second folded portion and the insertion portion. The stator for an electric motor according to claim 1, wherein an opening is provided therebetween.   The position in the axial direction of the first-phase winding end leading portion provided in the insulating portion that is the exit of the coil closest to the neutral point of the first-phase winding is the first position of the neutral-point terminal. The stator of the electric motor according to claim 2, wherein the stator is further away from the axial end face of the stator core than the axial position of the folded portion and the second folded portion.   4. The electric motor according to claim 2, wherein a lead-out protrusion is formed on the insulating portion into which the neutral point terminal is inserted and is positioned near the opening outside the neutral point terminal. 5. stator.   5. The electric motor stator according to claim 1, wherein a rectangular wire is used as the square wire.   An electric motor using the stator of the electric motor according to any one of claims 1 to 5.   A blower comprising the electric motor according to claim 6.   A pump comprising the electric motor according to claim 6.   An air conditioner equipped with the blower according to claim 7. A first step of punching and stacking magnetic steel sheets to produce a strip-shaped stator core;
A second step in which an insulating part is applied to the stator core, and in parallel, a square wire is bent to produce a terminal and a neutral point terminal;
A third step of inserting the terminal and the neutral point terminal into the connection side of the insulating portion;
A fourth step of bending the strip-shaped stator core in a reverse direction to a predetermined side;
A fifth step of continuously winding the first phase and the second phase in the three-phase single Y connection without cutting the magnet wire;
A sixth step of winding the third phase in the same manner as the first phase;
A seventh step of returning the reversely bent stator core to a predetermined forward bending;
An eighth step of welding the stator core butt portion of the stator core;
Performing a fusing of the terminal and the neutral point terminal, and in parallel, manufacturing a wiring component;
A tenth step of assembling and joining the wiring components to the stator of the electric motor;
An eleventh step of molding the stator of the electric motor and concurrently producing other parts such as a rotor and a bracket;
And a twelfth step of assembling the electric motor.

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