JP4744718B2 - Electric motor stator and manufacturing method thereof - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a stator for an electric motor used for industrial equipment, office equipment, home appliances, and vehicles, and a method for manufacturing the same.
[0002]
[Prior art]
  In recent years, electric motors that are small and highly efficient have been demanded for motors used for industrial equipment, office equipment, home appliances, and vehicles. In particular, in a motor for a vehicle, an electric vehicle using a high performance battery in consideration of environmental problems has been developed.
[0003]
  In industrial equipment, office equipment, and home appliances, movable products have been developed by developing high performance batteries such as lithium ion batteries. Conventional power sources are mainly used with AC100V or AC200V for home use and AC200V to AC440V for industrial use. On the other hand, in a movable product device that uses a high-performance battery or the like as a power source, a very low power source voltage of DC 12 V to 60 V is often used. This is because, in order to reduce the size and weight so that it is convenient to carry the product device, it is desired to reduce the size and weight of the high-performance battery as the power source. In addition, if it is a movable product device, the risk of contact with the human body increases, so it must be a low voltage with little influence. Accordingly, there is an urgent need to develop an electric motor that can be driven at a low voltage.
[0004]
  In the case of a motor, when changing from a stationary motor to a movable motor, this can be achieved by rewinding the armature winding from a conventional AC100V to AC440V motor to a low voltage of DC12V to 60V. it can. Specifically, the number of turns of the armature winding is reduced by the voltage ratio, and the wire diameter of the armature winding is increased by the amount of the armature winding. In this case, since the slot opening into which the armature winding is inserted is narrow in the conventional stator of the electric motor, the thickened armature winding cannot be inserted.
[0005]
  Further, even if the armature winding can be inserted, the handling work becomes worse as the wire diameter becomes thicker, and the ratio of the armature winding to the slot (space factor) cannot be increased. Also, as another method, there is a method of inserting a plurality of armature windings in a bundle to match the overall cross-sectional area of the wire diameter so that the cross-sectional area of the thick wire diameter is the same even if the slot opening is narrow, In this case as well, the end portions of the armature windings drawn from the end portions of the stator become very large, so that the connection work becomes very complicated and a defect due to an incorrect connection occurs. Also, since the sheath of the wire becomes thicker as the armature winding wire diameter becomes thicker, the ratio of the core wire portion in the slot decreases, so the performance of the motor that is substantially rewinded to a lower voltage than the high voltage motor Will decline.
[0006]
  In view of this problem, depending on the size of the opening of the stator slot, the stator is divided by the stator yoke portion located in the center of the slot with the stator tooth portion of the motor as the center. The armature winding which bundled a thick wire diameter and a plurality of things can be wound around a stator tooth part. After the armature winding is wound around the stator tooth portion, the stator divided into a plurality is integrally formed by TIG welding or laser welding.
[0007]
[Problems to be solved by the invention]
  FIG. 10 shows a longitudinal sectional view of such an electric motor. In the three-phase synchronous motor shown in FIG. 10, the insulator 3 is disposed at both ends of the stator 1, the armature winding 2 is concentratedly wound around the teeth of the stator 1, and the connection point 4 is fixed above the winding. It is fixed with etc. In the electric motor shown in FIG. 10, in order to obtain a circuit configuration in which the armature windings 2 wound around the respective phases are connected and driven as an electric motor, Δ connection or Y connection is performed. An armature winding 2 having a very large wire diameter or an armature winding 2 in which a plurality of coils are bundled is drawn out from each end portion of the armature winding 2 wound around the teeth of the stator. It will be.
[0008]
  The thick armature winding 2 and the armature winding 2 having a plurality of bundles are connected at the end of the stator 1. As described above, the wire diameter is very large. Alternatively, since the armature winding 2 is a bundle of a plurality of pieces, handling work is extremely difficult. In addition, it should be possible to reduce the winding height of the end portion of the stator 1 by using concentrated winding that is wound directly on the tooth portion. However, as described above, a very thick wire diameter or a plurality of bundles are connected. The connection point 4 becomes very large, and if the connection point 4 is fixed to the upper part of the winding at the end of the stator 1 by a fixing string or the like, the height of the winding becomes high.
[0009]
  Therefore, if a motor that has been wound to a low voltage specification is to be installed in a space in which a motor wound to a conventional high voltage specification is mounted, a considerably large space is required.
[0010]
[Means for Solving the Problems]
  The stator of the electric motor is divided into a plurality in the circumferential direction, and an insulator molded with a bobbin or a resin integrally molded with resin or the like is applied to the divided stator teeth, and the insulator is A resin wall that insulates the teeth of the stator and protects the armature winding protruding in the axial direction from at least one of the stator end portions; and a resin plate extending from the resin wall to the stator outer diameter side. Have
  In the electric motor in which the armature winding is wound in a concentrated winding around the stator tooth portion where the insulator is arranged,
  After integrally fixing the stator divided into a plurality in the circumferential direction,
  Corresponding to each phase for driving the motor on the resin wall that protects the armature winding protruding in the axial direction from the stator end and the resin plate extending from the resin wall to the stator outer diameter side A conductive material different from the armature winding is disposed.
[0011]
  Therefore, it is not possible to directly draw out an armature winding having a very large wire diameter or an armature winding in which a plurality of wires are bundled together, so that the lead-out operation of the motor can be made very easy. . Further, since there is no connection point portion, the height of the winding can be reduced, and there is no need to fix the connection point portion with a fixing string or the like.
[0012]
  As a result, an armature winding having a very thick wire diameter or a plurality of pieces of armature windings that are wound into a space in which a conventional electric motor is mounted and rewritten to a low voltage specification having a voltage of DC12V to 60V. An electric motor having a wire can be attached. In particular, when the power source of a high-performance battery or the like is applied to an electric motor mounted on a vehicle having a low voltage specification such as DC12V to 60V, it can be arranged even in a narrow space.
[0013]
  In addition, by using the conductive material as a conductive material that is integrally punched by a separate member press or the like, the mounting operation can be easily performed, and defects due to incorrect connection can be reduced.
[0014]
  In addition, after the conductive material is punched out by a press or the like, a resin wall that protects the armature winding that protrudes in the axial direction from the stator end portion of the molded conductive material, and from the resin wall to the stator outer diameter side By forming it into a shape along the upper part of the stretched resin plate, it is possible to eliminate damage caused by dropping or catching due to handling operations. Moreover, since the conductive material can be molded and escaped so that the conductive material connected to each phase does not come into contact, the connection work can be simplified.
[0015]
  In addition, as a method for manufacturing a stator of an electric motor, the stator of the electric motor is divided into a plurality of parts in the circumferential direction, and the divided stator teeth are integrally molded with a resin such as a bobbin or resin. A resin wall that insulates the tooth portion of the stator and protects the armature winding protruding in the axial direction from at least one of the stator end portions; and the resin wall Having a resin plate extending to the outer diameter side of the stator,
  A first step of winding an armature winding around the stator tooth portion on which the insulator is disposed by concentrated winding, and attaching an end of the armature winding to a terminal pin attached to the insulator;
  A second step of integrally fixing the stator divided into a plurality in the circumferential direction;
  Corresponding to each phase for driving the motor on the resin wall that protects the armature winding that protrudes in the axial direction from the stator end, and on the resin plate extending from the resin wall to the stator outer diameter side A third step in which a conductive material different from the armature winding is disposed;
  By connecting the conductive material to the lead wire terminal portion or by connecting the power source directly to the power source as the lead wire terminal, a method of manufacturing an electric motor,
  Even in a stator in which a plurality of armature winding ends protrude from the divided stator, the wiring work can be easily performed without making a mistake in the connection, and an electric motor having a low stator winding height can be obtained.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
  Embodiments of the present invention will be described with reference to the drawings. 1 and 2 show the stator divided into six in the circumferential direction.soThe electric motor which connected and integrally fixed and formed the three-phase 4 pole is shown.
[0017]
  FIG. 1 is a view of the electric motor as viewed from above, and is a view of a lead wire terminal side in which a lead wire 6 for connecting to the power source side is drawn out from a lead wire terminal block 9. Moreover, FIG. 2 is the figure of the opposite lead wire terminal side which looked at the electric motor from the bottom. FIG. 3 shows one division of the six-divided stator constituting the electric motor. 1 and 6 in FIG. 1 and FIG. 2 indicate slot numbers.
[0018]
  The teeth of each divided stator 1 are insulated by a bobbin integrally formed of resin or the like, or an insulator 3 molded by resin or the like. As this insulator 3, PEN (polyethylene naphthalate), PBT (polybutylene terephthalate), PPS (polyphenylene sulfide), LCP (liquid crystal polymer resin), fluorine resin, PEEK (polyether ether ketone), aromatic polyamide resin, etc. Is used. The armature winding 2 is wound in concentrated winding from the top of the insulator 3 arranged on the tooth portion of the divided stator 1. The method in which the armature winding 2 is concentratedly wound around the tooth portions of the stator 1 divided in this way allows the armature winding 2 to be wound in the slot of the stator 1 without a gap.
[0019]
  As shown in FIG. 3, the winding start portion and the winding end portion of the armature winding 2 of the insulator 3 molded by a bobbin or a resin integrally formed with a resin or the like on a tooth portion of each divided stator 1 The two terminal pins 7 for fixing the are attached. One terminal pin 7 is connected to the ends U1, U2, V1, V2, W1, and W2 of the armature winding 2 drawn from the U phase, V phase, and W phase of each phase, and the other terminal pin. 7, the end portions X1, X2, Y1, Y2, Z1, and Z2 of the armature winding 2 are respectively directly wound and fixed by welding or the like.
[0020]
  As another method for fixing the armature winding 2 to the terminal pin 7, a round terminal or a tip-open terminal is connected to the end of each armature winding 2, and a screw thread is provided on the terminal pin 7. It can also be fixed with a nut or the like.
[0021]
  As shown in FIGS. 1 and 2, the divided stator 1 shown in FIG.soAs a method of making the stator 1 to be integrally fixed, the joint portions of the six divided stators 1 are fixed by TIG welding, laser welding, or the like and integrally fixed.
[0022]
  Stator 1 circumferential directionsoAfter integrally fixing, the terminal pins 7 to which the end portions of the armature winding 2 concentratedly wound on the respective stators 1 are fixed are connected and fixed with a conductive material 5 different from the armature winding 2. Yes. Another conductive material 5 in this case includes a resin wall that protects the armature winding 2 that protrudes in the axial direction from the end of the stator, and an insulator 3 of a resin plate that extends from the resin wall to the stator outer diameter side. Arranged at the top of.
[0023]
  FIG. 1 shows an arrangement diagram of the conductive material 5 that connects one end of the armature winding 2 wound around the stator 1 and the lead wire terminal block 9. The other end of the armature winding 2 shown in FIG. 1 is all connected on the side opposite to the lead wire to form a neutral point. In this case, the neutral point connection shown in FIG. 2 may be arranged together with the lead wire side connection shown in FIG. As a matter of course, in this case, since the wiring is performed only on one side, the working time can be shortened.
[0024]
  Therefore, by using this different conductive material 5, the armature winding 2 having a very large wire diameter or the armature winding 2 in which a plurality of pieces are bundled as one bundle is directly connected to the lead wire 6. Therefore, the work of routing the armature winding 2 is facilitated, and the working efficiency is remarkably increased. In addition, the armature windings 2 drawn from the respective phases are not bundled to form a very large connection point 4. Further, the heating time when brazing the armature winding 2 can be shortened, and the short brazing time prevents the armature winding 2 from being melted too much and causing the dielectric breakdown of the armature winding 2 to occur. .
[0025]
  The another conductive material 5 preferably includes a resin wall that protects the armature winding 2 that protrudes from the end of the stator 1 in the axial direction, and a resin plate that extends from the resin wall to the outer diameter side of the stator 1. It is better to arrange it along the top of the insulator 3. That is, if another conductive material 5 is disposed so as to cross the hollow during the motor assembling operation, the conductive material 5 may be dropped or damaged due to being caught by a jig or an operator's hand. Therefore, the conductive material 5 is securely fixed by providing a claw portion 8 on the key for attaching the conductive material 5 to the upper part of the insulator 3 of the resin wall and resin plate as shown in FIG.
[0026]
  FIG. 5 schematically shows a typical three-phase four-pole connection diagram of an electric motor in which the armature winding 2 is concentratedly wound around the stator 1. 1S to 6S in the figure indicate the slot numbers of the stator 1. As shown in FIG. 5, in the case of the 2Y connection in which the Y connection is a parallel circuit, the end portions U1 and U2 of one armature winding 2 drawn from the U phase, V phase, and W phase, V1 and V2, Three connection points 4 connected to the lead wire 6 connecting W1, W2 and the power source side, and ends X1, X2 of the other armature winding 2 on the opposite side to the lead wire side of each phase, A connecting point 4 is required at one point (or X1, Y1, Z1, and X2, Y2, Z2 may be divided into two points) connecting Y1, Y2, Z1, and Z2 as neutral points. Although at least four large connection points 4 had to be fixed to the upper end of the winding with a fixing string or the like, this is not necessary and the operation can be simplified. Furthermore, since the large connection point 4 is not disposed on the upper part of the armature winding 2 concentratedly wound around the stator 1, the winding height of the stator 1 can be substantially reduced, and the motor can be used even in a narrow space. Can be placed.
[0027]
  In this embodiment, the other conductive material 5 is connected to the lead wire terminal block 9 provided at the end of the stator 1. However, the conductive material 5 is directly attached to an external terminal or the like. The material cost of the outgoing line 6 can also be reduced. In FIG. 5, the neutral point is connected on the lead wire side. However, when the arrangement of the conductive material 5 is difficult, the neutral point may be connected on the anti-lead wire side.
[0028]
  Moreover, both ends of the conductive material 5 are as shown in FIGS. 6A and 6B so that each conductive material 5 can be easily attached to the terminal pin 7 to which the end of the armature winding 2 is fixed. It is preferable to use a round shape or a tip-open shape. In addition, the material of the conductive material 5 may be any material that is electrically low resistance typified by copper and aluminum.
[0029]
  In addition, in a movable product in industrial equipment, office equipment, and household appliances, a power source of a high-performance battery or the like is driven by a low voltage of DC 12 V to 60 V, and a conventional power source for a non-moving motor Compared to AC100V to 440V, etc., the armature winding 2 has a thick wire diameter, or the armature winding 2 in which a plurality of pieces are bundled into one bundle is often used. Therefore, since it can be reduced in size and weight, it can be arranged in a small space without difficulty.
[0030]
  In particular, in a motor for a vehicle equipped with a high-performance battery in consideration of environmental problems, there are many cases where the power source is a motor driven by a high-performance battery with a low voltage of DC12V to 60V due to the above-mentioned problems. The armature winding 2 has a thick wire diameter or a plurality of armature windings 2 in one bundle. Therefore, by using the above-described electric motor structure, the operation of routing the armature winding 2 at the end of the stator 1 can be eliminated, and the wiring can be easily performed only by attaching another conductive material 5. Further, since the height of the armature winding 2 can be reduced, it can be arranged in a small vehicle mounting space.
[0031]
  Further, FIG. 7 shows the conductive material 5 routed from the terminal pin 7 of each phase shown in FIG. (A) is the conductive material 5 (a) connected to the ends U1 and U2 of the armature winding 2, and (b) is the conductive material 5 (b) connected to the ends V1 and V2 of the armature winding 2. ), (C) is a conductive material 5 (c) to be connected to the end portions W1 and W2 of the armature winding 2.
[0032]
  By making this conductive material 5 a product that is integrally punched with a press or the like, a resin wall that protects the armature winding 2 that protrudes from the end of the stator 1 in the axial direction, and the stator 1 It can arrange | position without the phases contacting along the upper part of the insulator 3 of the resin board extended to the outer diameter side.
[0033]
  This is because the conductive material 5 is punched out by a press or the like, and therefore when placed at the end of the stator 1, the shape is stable and hardly deformed by an external force. This is because it can be disposed on the insulator 3. Therefore, the shape does not change unless the conductive material 5 is intentionally deformed.
[0034]
  Further, the connection point 4 of the armature winding 2 in which the conventional armature winding 2 has a very large wire diameter or a bundle of plural armature windings 2 is manually operated on the upper part of the winding at the end of the stator 1. However, since the conductive material 5 is punched out by a press or the like and has a stable shape, variations in product dimensions can be eliminated. Further, since the conductive material 5 has a stable shape, the motor connection work can be made very easy, and a product excellent in quality can be provided without making a mistake in the connection.
[0035]
  Further, by punching the conductive material 5 with a press or the like, both ends of the conductive material 5 are rounded and shaped as shown in FIG. 6 so that the conductive material 5 can be easily attached to the terminal pins 7 of the stator 1. By punching into a first open shape with a press or the like, the conductive material 5 can be reliably fixed to the terminal pin 7 and the reliability can be improved.
[0036]
  Moreover, after punching out the conductive material 5 with a press or the like, the conductive material 5 protects the armature winding 2 protruding in the axial direction from the end of the stator 1 as shown in FIGS. A resin plate extending from the resin wall to the outer diameter side of the stator 1 is molded along the insulator 3, or, for example, a portion of the A portion of the conductive material 5 (a) shown in FIG. 7 (a) As shown in FIG. 8 and FIG. 8, by forming a part of the conductive material 5, the conductive material 5 can be fixed in close contact with the insulator 3 except for this part, and the conductive material 5 straddles each phase. Even if there is, it is possible to provide a product that is stable in quality without being contacted and short-circuited.
[0037]
  Further, by forming and arranging the conductive material 5 of each phase, it can be easily connected to the terminal pin 7 to which the armature winding 2 of each phase is attached, and the wiring work can be greatly simplified. Further, a state in which the conductive material 5 (a) shown in FIG. 7 (a) is molded and attached to the insulator 3 will be described with reference to FIG. 9 is a cross-sectional view taken along the line BB in FIG. As shown in FIG. 9, the conductive materials 5 (a) and 5 (c) arranged in each phase are examples in which the conductors are connected without contacting each other. The conductive material 5 (a) attached to the terminal pin 7 is bent at a right angle along the resin wall that protects the armature winding 2 protruding in the axial direction. It is bent at a right angle in the opposite direction so as to extend along the resin plate extending to the radial side, and is arranged extending to the outer diameter side of the stator 1. The conductive material 5 (c) disposed so as to intersect the conductive material 5 (a) at a right angle is formed so as to straddle the air so as not to contact the conductive material 5 (a) extending to the outer diameter side of the stator. Has been placed. In this case, the molding is stably molded by applying an external force mechanically after press punching. Further, for example, in the case of a small lot at the time of trial manufacture, the conductive material 5 can be made by etching or the like without departing from the gist of the present invention.
[0038]
  In addition, in the manufacturing process of the stator 1 of the present embodiment, the stator 1 of the electric motor is in the circumferential direction as the first process.soA toothed portion of the stator 1 divided into a plurality is provided with a bobbin integrally formed of resin or the like and an insulator 3 molded with resin or the like, and the shape of the insulator 3 is changed from the end of the stator 1 to the shaft. The armature winding 2 that protrudes in the direction is composed of a resin wall that protects the armature winding 2 and a resin plate that extends from the resin wall to the outer diameter side of the stator 1.
[0039]
  Next, the armature winding 2 is wound in a concentrated manner around the teeth of the stator 1 formed of a resin wall and a resin plate, and the armature winding 1 is wound around a terminal pin 7 attached to an insulator 3 by welding or the like. Fix by fixing with screws or nuts. In addition, the fixing method of the armature winding 2 is not limited.
[0040]
  Next, as the second step, the circumferential directionsoThe divided stator 1 is integrally fixed by TIG welding, laser welding or the like. The method for integrally fixing the stator 1 is not limited.
[0041]
  Thereafter, as a third step, a resin wall that protects the armature winding 2 that protrudes from the end of the stator 1 in the axial direction, and an insulator 3 of a resin plate that extends from the resin wall to the stator outer diameter side. A conductive material 5 different from the armature winding 2 corresponding to each phase for driving the electric motor is arranged on the top of the motor. Then, it is set as the manufacturing method which connects the said electrically-conductive material 5 to a lead wire terminal part as a 4th process, or connects directly to a power supply as a lead wire terminal.
[0042]
  As a result, even when the stator 1 is divided into a plurality of parts and the end portions of the armature windings 2 protrude from a plurality of locations, the armature windings 2 can be easily connected without being pulled out directly. Moreover, since the location of the very large connection point 4 with the armature winding 2 in each phase is eliminated, the winding height of the upper end portion of the stator 1 can be made low.
[0043]
  Moreover, since there is no connection point 4, the operation | work which fixes the connection point 4 with a fixed string etc. can be simplified. In particular, the armature winding 2 has a very large wire diameter, and the armature winding 2 in which a plurality of the armature windings 2 are bundled as one bundle is not routed at the end of the stator 1, so that the working efficiency is very high. We can supply products that are improved and stable in quality.
[0044]
【The invention's effect】
  Motor stator is circumferentialsoThe insulator is divided into a plurality of parts, and the divided stator teeth are integrally molded with a resin such as a bobbin or resin.Insulate the teeth of the statorStator endAt least one ofA resin wall that protects the armature winding protruding in the axial direction from the resin wall, and a resin plate that extends from the resin wall to the stator outer diameter sideAnd the insulator is disposedConcentrated winding of armature windings on stator teethWrapped inIn the electric motor,
[0045]
  Circumferential directionsoAfter integrally fixing a plurality of divided stators, a resin wall that protects the armature winding protruding in the axial direction from the end of the stator, and a resin plate extending from the resin wall to the stator outer diameter side A conductive material different from the armature winding corresponding to each phase for driving the electric motor is arranged on the top, and the conductive material is connected to the lead wire terminal portion or directly to the power source as the lead wire terminal. By connecting the motor,
[0046]
  Since it is no longer necessary to directly draw out and connect armature windings having a very large wire diameter or armature windings in which a plurality of wires are bundled into one bundle, it is very easy to wire the motor. In addition, since there are no connection points, the height of the winding can be reduced, and a high-performance electric motor that is smaller and lighter can be obtained.
[0047]
  As a result, even a motor having a very thick wire armature winding or an armature winding in which a plurality of wires are bundled in one space is installed in the same space as in the past. be able to.
[0048]
  In particular, in a low voltage DC12V to 60V electric motor, the axial length of the stator can be shortened. For example, by using an electric motor mounted on a vehicle, it can be mounted in a small mounting space. Since it is possible, there is a degree of freedom in the arrangement of the electric motor.
[0049]
  Further, by using a conductive material different from the armature winding punched out by a press or the like, the wiring work can be facilitated and attached. In addition, in an electric motor in which the stator is divided into a plurality of pieces and fixed integrally, even if the end portions of the armature winding are drawn out for each of the divided stators, only a conductive material punched out by a press or the like is disposed. It becomes possible to install without making a mistake in the connection.
[0050]
  In addition, after the conductive material is punched out by a press or the like, a resin wall that protects the armature winding that protrudes in the axial direction from the stator end portion of the molded conductive material, and from the resin wall to the stator outer diameter side The forming operation can be facilitated by forming the shape along the upper part of the stretched resin plate, and the conductive material of each phase can be formed and wired so that the conductive material of each phase does not contact. As a result, the short circuit of each phase can be prevented and the armature windings of each phase can be easily connected, so that the work can be greatly simplified.
[0051]
  Also, how to make the statorsoThe insulator is divided into a plurality of parts, and the divided stator teeth are integrally molded with a resin such as a bobbin or resin.Insulate the teeth of the statorStator endAt least one ofA resin wall that protects the armature winding protruding in the axial direction from the resin wall, and a resin plate that extends from the resin wall to the stator outer diameter sideAnd the insulator is disposedA first step of winding the armature winding around the stator tooth portion in a concentrated manner;,
[0052]
  Circumferential directionsoA second step of integrally fixing a plurality of divided stators; a resin wall that protects an armature winding protruding in an axial direction from the end of the stator; and extending from the resin wall to a stator outer diameter side A third step of disposing a conductive material different from the armature winding corresponding to each phase for driving the electric motor on the top of the resin plate, or connecting the conductive material to the lead wire terminal portion, Or even if the end of the armature winding divided into a plurality of parts is protruding in multiple places by making the motor a manufacturing method by the fourth step of connecting directly to the power source as the lead wire terminal, Since the armature winding is not pulled out directly, it can be easily connected without making a mistake in the connection work.
[0053]
  In addition, since there is no very large connecting portion that directly connects the armature winding and the lead wire in each phase, the winding height of the upper end portion of the stator can be made low. Moreover, since there is no connection point, the work of fixing the connection point with a fixing string or the like can be simplified. In particular, since the armature winding has a very large wire diameter or multiple windings in one bundle are not routed at the end of the stator, the work efficiency is very good and the quality is improved. A stable product can be supplied.
[Brief description of the drawings]
FIG. 1 is a view of a lead wire side of a stator as viewed from above showing an embodiment of the present invention.
FIG. 2 is a view on the side opposite to the outgoing line of the stator as seen from below showing an embodiment of the present invention.
3 is a perspective view of the divided stator before the stator is integrally fixed as shown in FIGS. 1 and 2; FIG.
FIG. 4 is a partial detail view of a key-like claw for fixing a conductive material to a resin plate.
5 is a connection diagram of FIGS. 1 and 2. FIG.
FIG. 6 is a conductive material end shape diagram.
7 is a conductive material for each phase connecting the armature windings of FIG. 1;
FIG. 8 is a detailed view of partial molding of a conductive material.
9 is a partial vertical cross-sectional view taken along line BB in FIG.
FIG. 10 is a longitudinal sectional view of a conventional electric motor.
[Explanation of symbols]
  DESCRIPTION OF SYMBOLS 1 ... Stator, 2 ... Armature winding, 3 ... Insulating material, 4 ... Connection point, 5, 5 (a), 5 (b), 5 (c) ... Conductive material, 6 ... Lead wire, 7 ... Terminal pin, 8 ... Claw, 9 ... Lead wire terminal block, U, V, W ... Stator phases, U1, U2, V1, V2, W1, W2, X1, X2, Y1, Y2, Z1, Z2 ... Armature winding terminal, 1S-6S ... Slot number.

Claims (6)

The stator of the electric motor is divided into a plurality in the circumferential direction, and an insulator molded with a bobbin or a resin integrally molded with resin or the like is applied to the divided stator teeth, and the insulator is A resin wall that insulates the teeth of the stator and protects the armature winding protruding in the axial direction from at least one of the stator end portions; and a resin plate extending from the resin wall to the stator outer diameter side. Have
In the electric motor in which the armature winding is wound in a concentrated winding around the stator tooth portion where the insulator is arranged,
After integrally fixing the stator divided into a plurality in the circumferential direction,
Corresponding to each phase for driving the motor on the resin wall that protects the armature winding that protrudes in the axial direction from the end of the stator and the resin plate that extends from the resin wall to the stator outer diameter side A conductive material different from the armature winding,
An electric motor characterized in that the conductive material is connected to a lead wire terminal portion or directly connected to a power source as a lead wire terminal.   2. The electric motor according to claim 1, wherein a voltage on a power source side of the electric motor is DC12V to 60V.   The electric motor according to claim 1, wherein the electric motor is a motor mounted on a vehicle.   4. The electric motor according to claim 1, wherein the conductive material is a conductive material punched by a press or the like.   5. The electric motor according to claim 1, wherein the conductive material is a conductive material punched and formed by a press or the like. The stator of the electric motor is divided into a plurality in the circumferential direction, and an insulator molded with a bobbin or a resin integrally molded with resin or the like is applied to the divided stator teeth, and the insulator is A resin wall that insulates the teeth of the stator and protects the armature winding protruding in the axial direction from at least one of the stator end portions; and a resin plate extending from the resin wall to the stator outer diameter side. Have
A first step of winding an armature winding in a concentrated winding around a stator tooth portion where the insulator is disposed;
A second step of integrally fixing the stator divided into a plurality in the circumferential direction;
Corresponding to each phase for driving the motor on the resin wall that protects the armature winding that protrudes in the axial direction from the stator end, and on the resin plate extending from the resin wall to the stator outer diameter side A third step of disposing a conductive material different from the armature winding;
According to the fourth step of connecting the conductive material to the lead wire terminal portion or directly connecting to the power source as the lead wire terminal.
A method for manufacturing an electric motor, comprising manufacturing the electric motor.

Images