JP4841590B2 - Motor stator, motor, blower, pump, and air conditioner - Google Patents

Description

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

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, a stator core having a plurality of teeth, an insulating portion applied to the teeth of the stator core, and the insulating portion. In a stator of an electric motor having a three-phase single Y-connection winding applied to a tooth by a direct concentrated winding method,
All the connecting wires of the windings are arranged on the connection side of the insulating part, 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 the winding of the 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,
A stator iron core is arranged in a strip shape, concentrated winding winding is applied to the teeth, and the connecting wire of the winding is not entangled with the insulating portion.

  In the stator of the electric motor according to the present invention, since the connecting wire of the winding is not entangled with the insulating portion, the processing time is shortened and the manufacturing cost can be reduced.

Embodiment 1 FIG.
FIGS. 1 to 9 are diagrams showing the first embodiment. FIG. 1 is a perspective view showing a state in which the stator 100 of the motor is wound, and FIG. 2 shows a state in which the stator 100 of the motor is wound from the outer peripheral side. 3 is a perspective view of the terminal 4, FIG. 4 is a perspective view of the neutral point terminal 5, FIG. 5 is a perspective view of the modified neutral point terminal 5, and FIG. 6 is a view of the stator 100 of the motor. Drawing showing winding procedure ((a) is winding procedure of first phase (U phase), (b) is winding procedure of second phase (V phase), (c) is third phase (W phase) 7 is a perspective view of the stator 100 of the motor, FIG. 8 is a partially enlarged view of the vicinity of the neutral point terminal 5, FIG. 9 is a diagram showing the motor 200, and FIG. 10 is a manufacturing process of the motor 200. FIG.

  1 and 2, a stator 100 of an electric motor includes a stator core 1 in which electromagnetic steel plates having a thickness of about 0.1 to 0.7 mm are punched into a strip shape and stacked by caulking, welding, bonding, or the like. .

  Here, the stator core 1 includes six 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. Therefore, here, six insulating portions 3 are provided.

  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, when there is a sufficient distance between the adjacent teeth 1a so that the coil 2 can be easily wound around the teeth 1a, the coil 2 is connected to the teeth 1a in a state where the stator core 1 is in a strip shape (straight shape). Can be wound. This is a case where it is not necessary to bend the strip-shaped stator core 1 in the reverse direction so that the teeth 1a are on the outside in order to make it easier to wind the coil 2 around the teeth 1a.

  The coil 2 is wound around each tooth 1a to which the insulating portion 3 is applied. 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. 3 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. 4 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 insulation part 3 is provided with the protrusion 8 (refer FIG. 2, FIG. 7) which maintains the height from the axial direction end surface of the stator core 1 in a predetermined position on the connection side.

  With reference to FIG. 6, a procedure for performing a six-slot three-phase single Y connection will be described.

  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. 6 (a), the winding procedure of the first U-phase will be described. As shown in FIG. 6A, 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 (left end in FIG. 6A). 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.

  The connecting wire 2a drawn from the first-phase connecting wire lead-out portion 11 to the outer diameter side of the stator core 1 is the first tooth 1a from which the two teeth 1a are skipped (in FIG. 6A, the sixth tooth from the left side). From the first-phase crossover entrance 14 provided in the insulating portion 3 of the tooth 1a), it is routed from the left side to the sixth tooth 1a.

  Since the coil 2 is wound around the teeth 1a in a state where the stator core 1 is in a strip shape (straight shape), the connecting wire 2a naturally follows the outer diameter side of the stator core 1, so that the connecting wire 2a is third from the left side. There is no need to entangle the insulating portion 3 while being routed from the first tooth 1a to the sixth tooth 1a from the left side.

  In order to make it easy to wind the coil 2 around the teeth 1a, when winding the coil 2 around the teeth 1a by bending the strip-shaped stator core 1 so that the teeth 1a are on the outside, the third from the left While the connecting wire 2a is routed from the tooth 1a to the sixth tooth 1a from the left side, the connecting wire 2a needs to be tangled to the insulating portion 3 at least once.

  In the present embodiment, since the coil 2 is wound around the teeth 1a in a state where the stator core 1 is in a strip shape (straight shape), the crossover wire 2a is connected from the third tooth 1a from the left side to the sixth tooth 1a from the left side. There is no need to tie the connecting wire 2a to the insulating portion 3 during the drawing, so that the processing time can be shortened and the manufacturing cost can be reduced.

  From the first-phase crossover entrance 14 provided in the insulating portion 3 of the sixth tooth 1a from the left side, it is routed from the left side to the sixth tooth 1a, and in the same way as the first coil U-1, the tooth 1a is given a predetermined number of times. A second coil U-2 of the first phase is formed by being wound left-handedly.

  At this time, the connecting wire 2a is held at a predetermined position by the projection 8 (see FIGS. 2 and 7) provided on the outside of the insulating portion 3 from the axial end surface of the stator core 1 for each phase. The first-phase crossover 2a is routed to the first stage closest to the stator core 1.

  The magnet wire after the second coil U-2 which is 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 second coil U-2 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. 6A), 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. The end of the first phase winding is provided in the insulating portion 3 of the tooth 1a (the fifth tooth 1a from the left side in FIG. 6A) in which the first second coil V-2 of the adjacent second phase is formed. At the end of the first phase winding, the bald pin 16 is pulled once or more.

  A substantially T-shaped neutral point terminal 5 assembled using the routing protrusion 7 of the neutral point terminal 5 provided on the insulating portion 3 of the tooth 1a where the second coil V-2 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. 8 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 second coil V-2 of the second phase is hooked on the first folded portion 5a of the neutral point terminal 5, and is continuously connected 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 second coil V-2 of the second phase is formed, the second-phase connecting wire 2b is drawn out from the second-phase connecting wire lead-out portion 19 to the outer peripheral side of the stator core 1.

  The connecting wire 2b is crossed in a direction opposite to the direction in which the first-phase connecting wire 2a is routed (leftward in FIG. 6B), and the tooth 1a that is the tip of the two teeth 1a (FIG. 6) is skipped. In (a), it is drawn to the 2nd teeth 1a from the left side from the 2nd phase crossover entrance 21 provided in the insulating part 3 of the 2nd teeth 1a) from the left side.

  Like the first second coil V-2, the second phase first coil V is wound around the tooth 1a a predetermined number of times and wound clockwise. -1 is formed.

  Similar to the first phase (U phase), the coil 2 is wound around the tooth 1a in a state where the stator core 1 is in a strip shape (straight), so that the connecting wire 2b naturally follows the outer diameter side of the stator core 1. Therefore, it is not necessary to tie the connecting wire 2b to the insulating portion 3 while it is routed from the fifth tooth 1a from the left side to the second tooth 1a from the left side. Therefore, the processing time is shortened and the manufacturing cost can be reduced.

  Further, the second-phase crossover wire 2b is routed at the height of the second stage from the end face of the stator core 1 (divided by the protrusion 8).

  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.

  Thus, the second coil V-2 formed at the beginning of the second phase (wound around the fifth tooth 1a from the left side in FIG. 6B) is formed at the end of the first phase. Next to the second coil U-2 (which is wound around the sixth tooth 1a from the left side in FIG. 6A), so that the moving distance of the winding equipment to the predetermined position is minimum. As a result, the processing time can be reduced, and the processing 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.

  The connecting wire 2c drawn to the outer diameter side of the stator core 1 from the third-phase connecting wire lead-out portion 26 is the tooth 1a from which the two teeth 1a are skipped (the fourth tooth from the left in FIG. 6C). From the third-phase crossover entrance 28 provided in the insulating portion 3 of the tooth 1a), the lead is drawn from the left side to the fourth tooth 1a.

  As in the first phase (U phase), the coil 2 is wound around the teeth 1a in a state where the stator core 1 is in a strip shape (straight shape), so that the connecting wire 2c naturally follows the outer diameter side of the stator core 1. Therefore, it is not necessary to tie the connecting wire 2c from the first tooth 1a at the left end to the fourth tooth 1a from the left side to the insulating portion 3. Therefore, the processing time is shortened and the manufacturing cost can be reduced.

  It is routed from the left side of the third phase crossover entrance 28 to the fourth tooth 1a from the left side and wound around the teeth 1a a predetermined number of times in the same manner as the first first coil W-1, and the second phase of the third phase. Coil W-2 is formed.

  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.

  After the second coil W-2 which is the last of the third phase is formed, the magnet wire is connected to the third phase crossover lead portion 26 (formed on the third tooth 1a from the right in FIG. 6C). 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. 8).

  Thus, the first coil W-1 formed at the beginning of the third phase (wound around the leftmost tooth 1a in FIG. 6C) is the first coil formed at the end of the second phase. Next to the coil V-1 (in FIG. 6B, wound around the second tooth 1a from the left) (next to the right). 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 of the stator core 1 is welded and fixed at the welded portion.

  At this time, the connecting wires 2a, 2b, 2c of each phase are held at predetermined positions by the protrusions 8 (not visible in FIG. 6, see FIG. 7) provided on the outer peripheral side of the insulating portion 3, and the connecting wires of each phase Since 2a, 2b, and 2c do not contact each other, quality can be improved.

  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. 9 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. 9, a wiring component 41 connected to the outside is assembled to the stator 100 of the electric motor of the present embodiment, and after being mechanically and electrically joined, molding is performed. 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. 10 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: In the three-phase single Y connection, the first phase and the second phase are continuously wound without cutting the magnet wire.
(5) Step 5: Wind the third phase in the same way as the first phase.
(6) Step 6: The strip-shaped stator core 1 is made into a predetermined positive bend.
(7) Step 7: The stator core butting portion 63 of the stator core 1 is welded.
(8) Step 8: Fusing the terminal 4 and the neutral point terminal 5 is performed. In parallel, the wiring component 41 is manufactured.
(9) Step 9: Assemble the connection component 41 to the stator 100 of the electric motor and join them together.
(10) Step 10: Mold the stator 100 of the electric motor. In parallel, other parts such as the rotor 38 and the bracket 39 are manufactured.
(11) Step 11: Assemble the electric motor 200.

  By manufacturing the electric motor 200 in the manufacturing process shown in FIG. 10 described above, 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, since the second coil V-2 formed at the beginning of the second phase is next to the second coil U-2 formed at the end of the first phase, the winding equipment is moved to a predetermined position. By minimizing the moving distance, the processing time can be reduced, and the processing 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. 10, the electric motor 200 can be manufactured with excellent productivity and efficiency.

  Further, since the coil 2 is wound around the teeth 1a in a state where the stator core 1 is in a strip shape (straight shape), the connecting wires 2a, 2b, 2c naturally follow the outer diameter side of the stator core 1, so that the connecting wires There is no need to entangle the insulating portion 3 while routing 2a, 2b, 2c. Therefore, the processing time is shortened and the manufacturing cost can be reduced.

Embodiment 2. FIG.
FIG. 11 is a diagram illustrating the second embodiment, and is a diagram illustrating a configuration of the air conditioner 300. As shown in FIG. 11, 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. 12 is a cross-sectional view of the pump 400 showing the third embodiment.

The pump 400 shown in FIG. 12 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 ring-shaped heat-resistant water-resisting magnet 150a and a cylindrical sleeve 150b disposed on the outer periphery of the shaft 96 inside the magnet 150a are integrally formed of a thermoplastic resin such as PPE (polyphenylene ether). A rotor 150 to be molded;
(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 electric motor is wound. FIG. 5 shows the first embodiment, and is a perspective view of a state in which a stator 100 of an electric motor is wound as viewed from the outer peripheral side. 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 terminal 4 according to a modification. 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, 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 motor stator for pump, 200 motor, 300 air conditioner, 400 pump.

Claims (5)

A stator core having a plurality of teeth obtained by punching and laminating electromagnetic steel sheets in a strip shape, 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 three-phase single Y-connection winding applied,
Wherein the side to which power is supplied in the axial direction of the stator core is inserted into the connection-side insulating portion, the power supply to a single Y-connection of windings of the three phases are formed by bending the rectangular wire 3 Terminals and
A neutral point terminal inserted on the connection side of the insulating portion, connected to a neutral point of the three-phase single Y connection, and formed by bending a square line;
The neutral point terminal is
An insertion part to be inserted on the connection side of the insulating part;
A bent portion obtained by bending a square line by 90 ° with respect to the insertion portion;
A first folded portion obtained by bending a square line by 180 ° at a predetermined position from the bent portion;
A second portion in which a square line is bent 180 ° toward the insertion portion side from the first folding portion at a position symmetrical to the first folding portion with respect to the insertion portion, and an opening is formed between the insertion portion and the insertion portion. With a folded portion of
All the connecting wires of the windings are arranged on the connection side of the insulating part,
Winding the first phase winding arranged in the first stage closest to the axial end surface of the stator core, and connecting the end of the first phase of the first phase winding to the second stage The winding start of the second phase winding is moved from the opening to the inside of the first folded portion of the neutral point terminal as the winding start of the second phase winding disposed in the first phase . Hang around one turn part, turn the winding start of the second-phase winding at the first turn-up part , and wind without cutting the first-phase winding and the second-phase winding. ,
Winding the third-phase winding disposed at the third stage farthest from the axial end surface of the stator core, and cutting the second connection portion of the neutral point terminal by the crossover wire,
A stator for an electric motor, wherein the stator core is arranged in a strip shape, the concentrated winding type winding is applied to the teeth, and the jumper wire of the winding is not entangled with the insulating portion. .   An electric motor using the stator of the electric motor according to claim 1.   A blower comprising the electric motor according to claim 2.   A pump comprising the electric motor according to claim 2.   An air conditioner equipped with the blower according to claim 3.

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