CN111313633B - Coil forming method and wire member - Google Patents
Coil forming method and wire member Download PDFInfo
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- CN111313633B CN111313633B CN201911268925.3A CN201911268925A CN111313633B CN 111313633 B CN111313633 B CN 111313633B CN 201911268925 A CN201911268925 A CN 201911268925A CN 111313633 B CN111313633 B CN 111313633B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/04—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings, prior to mounting into machines
- H02K15/0414—Windings consisting of separate elements, e.g. bars, hairpins, segments, half coils
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/06—Embedding prefabricated windings in machines
- H02K15/062—Windings in slots; salient pole windings
- H02K15/064—Windings consisting of separate segments, e.g. hairpin windings
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
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- Power Engineering (AREA)
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Abstract
The present invention relates to a coil forming method and a lead member. A coil molding method uses a wire member (10) to mold a plurality of coils (14) inserted into a plurality of slots (22) of a stator core (20). Each of the plurality of coils (14) includes a plurality of divided wires (24). In the coil forming method, a configuration process, a bonding process and an interval expansion process are carried out, wherein in the configuration process, a plurality of coils (14) are closely configured in a mode that a plurality of divided leads (24) are contacted with each other; after the arrangement step, a plurality of divided leads (24) forming the same coil (14) are bonded to each other in the bonding step; after the bonding step, the space between the plurality of coils (14) is enlarged in the space enlarging step. Accordingly, it is possible to suppress the plurality of divided wires forming the same coil from being scattered when the interval between the plurality of coils is enlarged, so that it is possible to easily handle the plurality of coils.
Description
Technical Field
The present invention relates to a coil molding method and a lead member for molding a plurality of coils inserted into a plurality of slots (slots) of a stator core.
Background
For example, the following technical ideas are disclosed in japanese patent laid-open publication No. 5298556: the plurality of coils arranged in the inner hole of the stator core are inserted into the slots of the stator core while being expanded in diameter.
Disclosure of Invention
In the prior art of japanese patent application laid-open No. 5298556, when a plurality of coils are expanded in diameter, the lead wires of the respective coils need to be deformed (bent), and therefore a relatively large load (bending load) is required. In order to reduce such a bending load, if each coil is divided into a plurality of wires (the divided wires are hereinafter referred to as "divided wires"), when the interval between the plurality of coils is increased in coil molding, the plurality of divided wires forming the same coil are scattered, and thus there is a problem that it is difficult to handle the plurality of coils.
The present invention has been made in view of the above-described problems, and an object thereof is to provide a coil forming method and a lead member capable of suppressing a plurality of divided leads forming the same coil from being scattered when the interval between a plurality of coils is enlarged, and capable of easily handling the plurality of coils.
An aspect of the present invention is a coil forming method for forming a plurality of coils inserted into a plurality of slots of a stator core, the plurality of coils each including a plurality of divided leads, the coil forming method performing an arranging step of closely arranging the plurality of coils such that the plurality of divided leads are in contact with each other, an adhering step, and an interval enlarging step; after the arranging step, bonding a plurality of the segment leads forming the same coil to each other in the bonding step; after the bonding step, the interval between the plurality of coils is widened in the interval widening step.
Another aspect of the present invention is a lead member having a plurality of split leads for molding a plurality of coils inserted into a plurality of slots of a stator core, the lead member having an adhesive layer provided on at least one of surfaces of the plurality of split leads that form the same coil, the surfaces being in contact with each other.
According to the present invention, the divided leads obtained by dividing each coil into a plurality of leads in order to reduce the bending load are bonded to each other, and therefore, the plurality of divided leads forming the same coil can be suppressed from being scattered when the interval between the plurality of coils is enlarged. This makes it possible to easily handle a plurality of coils.
The above objects, features and advantages should be readily understood from the following description of the embodiments with reference to the accompanying drawings.
Drawings
Fig. 1 is a partially omitted cross-sectional view of the stator.
Fig. 2 is a partially omitted perspective view of the coil of fig. 1.
Fig. 3 is a flowchart for explaining a coil forming method according to an embodiment of the present invention.
Fig. 4 is a partially omitted perspective cross-sectional view of a lead member according to an embodiment of the present invention.
Fig. 5 is an explanatory diagram of the arrangement process.
Fig. 6 is a cross-sectional view VI-VI of fig. 5.
Fig. 7 is an explanatory view of the bonding step.
Fig. 8 is a sectional explanatory view from VIII to VIII of fig. 7.
Fig. 9 is a sectional explanatory view of IX-IX of fig. 8.
Fig. 10 is an explanatory diagram of the interval enlarging process.
Fig. 11 is an explanatory diagram of the insertion process.
Fig. 12 is a flowchart illustrating a coil forming method according to a modification.
Fig. 13 is a cross-sectional explanatory view of the arrangement step and the bonding step according to the modification.
Detailed Description
Next, a coil forming method and a lead member according to the present invention will be described with reference to the drawings, by way of example of preferred embodiments.
A coil forming method according to an embodiment of the present invention is used for forming a coil 14 that constitutes a part of a rotating electrical machine 12 (a motor or a generator) shown in fig. 1.
As shown in fig. 1, the rotary electric machine 12 has a stator 16 and a rotor 18. The stator 16 has a stator core 20 formed in a circular ring shape and the coils 14 mounted in a plurality of slots 22 formed in the stator core 20. Each slot 22 extends to both end faces of the stator core 20 and is open on the inner circumferential surface. The plurality of slots 22 are provided at equal intervals in the circumferential direction of the stator core 20.
As shown in fig. 2, the coil 14 includes 3 split wires 24. In other words, the coil 14 is divided into 3 divided wires 24. In fig. 1, a rectangular wire having a rectangular cross section is used as each of the divided wires 24. The segment conductors 24 are arranged in the slots 22 in the circumferential direction of the stator core 20 so that the side surfaces of the long sides of the rectangular shape contact each other. Each of the divided leads 24 has a lead portion 26 and an insulating portion 28 covering the outer surface of the lead portion 26.
In fig. 2, each coil 14 includes a plurality of slot-inserted wire portions 30 to be inserted into the slot 22, a plurality of 1 st turn portions (the first turn portions) 32a connecting one end portions of the plurality of slot-inserted wire portions 30, and a plurality of 2 nd turn portions (the second turn portions) 32b connecting the other end portions of the plurality of slot-inserted wire portions 30. In other words, the coil 14 is formed by connecting a plurality of single coils 14a, wherein the single coil 14a has 2 slot insertion wire portions 30, 1 st turn-up portion 32a, and 1 nd turn-up portion 2 b.
As shown in fig. 1 and 2, in such a coil 14, an adhesive layer 34 (adhesive agent) described later is provided on the outer surface of the divided conductive wires 24 located at the center. The adhesive layer 34 exhibits adhesive ability only at the 1 st apex 36a of the 1 st turn portion 32a and the 2 nd apex 36b of the 2 nd turn portion 32b, and does not exhibit adhesive ability at portions other than the 1 st apex 36a of the 1 st turn portion 32a and the 2 nd apex 36b of the 2 nd turn portion 32 b. That is, the 1 st apex portion 36a of each of the 3 split conductive wires 24 in the coil 14 is bonded to each other, and the 2 nd apex portion 36b of each of the 3 split conductive wires 24 is bonded to each other by the adhesive layer 34. That is, in the coil 14, the portions other than the 1 st apex portion 36a and the 2 nd apex portion 36b of the 3 divided conductive wires 24 are not bonded to each other.
Next, a coil forming method for forming such a coil 14 will be described with respect to a relationship between the coil forming method for forming such a coil 14 and the lead member 10.
In the coil forming method, first, a preparation process is performed in step S1 of fig. 3. In the preparation step, as shown in fig. 4, the lead member 10 for molding the plurality of coils 14 (see fig. 1 and 2) is prepared. The wire member 10 has a plurality of wire bundles 38. Each wire harness 38 is composed of 3 divided wires 24. The above-described 1 coil 14 (see fig. 2) is formed of 1 wire harness 38(3 divided wires 24).
In the preparation step, the plurality of divided conductors 24 are arranged in a row, and the adhesive layer 34 is provided on the outer surface of the divided conductor 24 positioned in the middle of the bundle 38(3 divided conductors 24). The adhesive layer 34 covers the entire length of the segment wire 24. However, the range of the adhesive layer 34 to be provided to the segment wires 24 can be arbitrarily set. The adhesive layer 34 may be provided intermittently along the length of the segment wires 24.
The adhesive layer 34 exerts an adhesive ability by being physically acted. Specifically, the adhesive layer 34 is a self-adhesive layer that exerts adhesive ability by being applied with heat. However, the adhesive layer 34 is not limited to exhibiting the adhesive ability by being applied with heat, and may exhibit the adhesive ability by being applied with a physical action other than heat (for example, light or the like).
The adhesive layer 34 may be provided on at least one of the surfaces of the wire bundle 38(3 divided wires 24) that are in contact with each other. That is, the adhesive layer 34 may be provided only on the surfaces of the divided conductors 24 positioned in the middle of the harness 38 that are in contact with the divided conductors 24 positioned on both sides. The adhesive layer 34 may be provided only on the surfaces of the 2 divided wires 24 positioned on both sides of the wire bundle 38(3 divided wires 24) that are in contact with the divided wires 24 positioned in the middle.
Next, in step S2 of fig. 3, a placement step is performed. Specifically, as shown in fig. 5, the wire member 10 (the plurality of split wires 24) is tightly wound around a winding core 40 extending in one direction (the direction of arrow a). Accordingly, the plurality of coils 14 are closely arranged so that the divided leads 24 adjacent to each other in the arrow a direction are in contact with each other.
In the placement step, the core 40 is rotated about its axis to wind the wire member 10 around the core 40. However, in the disposing step, the winding core 40 may be fixed and the lead member 10 may be wound around the winding core 40 by winding around the axis of the winding core 40.
As shown in fig. 6, the winding core 40 is formed in a rectangular shape in cross section. Specifically, the 1 st plane 40a, the 1 st curved surface 40b, the 2 nd plane 40c, and the 2 nd curved surface 40d are provided on the outer surface of the winding core 40. The 1 st plane 40a and the 2 nd plane 40c extend parallel to each other.
The 1 st curved surface 40b connects a side portion of the 1 st plane 40a and a side portion of the 2 nd plane 40c to each other. The 2 nd curved surface 40d connects the other side portion of the 1 st plane 40a and the other side portion of the 2 nd plane 40c to each other.
In the arranging step, each of the divided leads 24 is bent along the shape of the winding core 40. That is, while the split conductive wires 24 are wound around the core 40 once, the 1 st inclined linear portion 42a extending along the 1 st plane 40a, the 1 st folded-back portion (the first folded-back portion)42b extending along the 1 st curved surface 40b, the 2 nd inclined linear portion 42c extending along the 2 nd plane 40c, and the 2 nd folded-back portion (the second folded-back portion)42d extending along the 2 nd curved surface 40d are formed on the split conductive wires 24.
In fig. 5 and 6, the 1 st inclined linear portion 42a and the 2 nd inclined linear portion 42c extend so as to be inclined with respect to the width direction of the winding core 40. The 1 st folded portion 42b connects one end portion of the 1 st inclined linear portion 42a and one end portion of the 2 nd inclined linear portion 42c to each other. The 2 nd folded portion 42d connects the other end portion of the 1 st inclined straight portion 42a and the other end portion of the 2 nd inclined straight portion 42c to each other.
Thereafter, in step S3 of fig. 3, a bonding step is performed. In this bonding step, the 1 st folded portion 42b and the 2 nd folded portion 42d of the plurality of divided leads 24 are heated by the heating device 50.
As shown in fig. 7 and 8, the heating device 50 is configured as a high-frequency induction heating coil. That is, the heating device 50 includes a1 st heating unit 52, a2 nd heating unit 54, a1 st temperature sensor 56, a2 nd temperature sensor 58, and a heating control unit 60. The 1 st heating section 52 includes a1 st heating coil 62, and the 1 st heating coil 62 is arranged to heat the 1 st folded section 42b so as to sandwich the 1 st folded section 42b from the thickness direction of the winding core 40 (see fig. 9). The 2 nd heating unit 54 has a2 nd heating coil 64, and the 2 nd heating coil 64 is arranged to heat the 2 nd folded portion 42d so as to sandwich the 2 nd folded portion 42d from the width direction of the winding core 40.
The 1 st temperature sensor 56 measures the temperature of the 1 st folded portion 42b heated by the 1 st heating portion 52. The 2 nd temperature sensor 58 measures the temperature of the 2 nd folded portion 42d heated by the 2 nd heating portion 54. The 1 st temperature sensor 56 and the 2 nd temperature sensor 58 use, for example, radiation thermometers, respectively. In this case, since the temperatures of the 1 st folded portion 42b and the 2 nd folded portion 42d can be measured in a non-contact manner, the 1 st temperature sensor 56 and the 2 nd temperature sensor 58 can be prevented from being stuck with the adhesive layer 34 (see fig. 4). However, the 1 st temperature sensor 56 and the 2 nd temperature sensor 58 are not limited to the radiation thermometer, and any thermometer may be used.
The heating control unit 60 adjusts the amount of current passed through the 1 st heating unit 52 so that the 1 st folded portion 42b reaches the target temperature, based on the temperature measured by the 1 st temperature sensor 56. The heating control unit 60 adjusts the amount of current passed through the 2 nd heating unit 54 so that the 2 nd folded portion 42d reaches the target temperature, based on the temperature measured by the 2 nd temperature sensor 58.
In the bonding step, the heating controller 60 supplies current to the 1 st heating coil 62 while moving the 1 st heating unit 52 from one end (end in the direction of arrow a 1) to the other end (end in the direction of arrow a 2) of the winding core 40. Accordingly, since the 1 st folded part 42b is inductively heated, a portion of the adhesive layer 34 provided in the 1 st folded part 42b is heated to exhibit an adhesive property. That is, the 1 st folded-back portions 42b of the divided leads 24 forming the same coil 14, which are adjacent to each other in the longitudinal direction of the core 40, are bonded to each other by the adhesive layer 34. In other words, the 1 st folded portion 42b of the divided lead wire 24 positioned at the middle in the longitudinal direction of the winding core 40 and the 1 st folded portions 42b of the divided lead wires 24 positioned on both sides are bonded to each other. At this time, since the adhesive layer 34 is not provided on the divided leads 24 positioned on both sides, the 1 st folded portions 42b of the different coils 14 adjacent to each other in the arrow a direction are not adhered to each other. The 1 st folded portion 42b is a portion corresponding to the 1 st vertex 36 a.
The heating controller 60 supplies current to the 2 nd heating coil 64 while moving the 2 nd heating unit 54 from one end portion (end portion in the direction of the arrow a 1) to the other end portion (end portion in the direction of the arrow a 2) of the winding core 40. Accordingly, the 2 nd folded portion 42d is inductively heated, and thus a portion of the adhesive layer 34 provided in the 2 nd folded portion 42d is heated to exhibit an adhesive property. That is, the 2 nd folded portions 42d of the divided lead wires 24 forming the same coil 14, which are adjacent to each other in the longitudinal direction of the winding core 40, are bonded by the adhesive layer 34. In other words, the 2 nd folded part 42d of the divided lead 24 positioned at the middle in the longitudinal direction of the winding core 40 and the 2 nd folded parts 42d of the divided leads 24 positioned on both sides are bonded to each other. At this time, since the adhesive layer 34 is not provided on the divided leads 24 positioned on both sides, the 2 nd folded portions 42d of the different coils 14 adjacent to each other in the arrow a direction are not adhered to each other. The 2 nd folded part 42d is a part corresponding to the 2 nd vertex 36 b.
In this bonding step, the 1 st inclined linear portion 42a and the 2 nd inclined linear portion 42c of each divided lead 24 are not heated by the heating device 50. Therefore, the 1 st inclined linear portion 42a and the 2 nd inclined linear portion 42c are not bonded to each other by the adhesive layer 34.
After that, in step S4 of fig. 3, a space enlarging process is performed. In the interval enlargement step, as shown in fig. 10, the intervals of the coils 14 adjacent to each other in the arrow a direction are enlarged. In fig. 10, only 2 wire bundles 38 (coils 14) are shown. At this time, only the 1 st folded part 42b and the 2 nd folded part 42d of the 3 divided conductive wires 24 of the same coil 14 are adhered to each other by the adhesive layer 34, and therefore, the divided conductive wires 24 can be easily deformed while suppressing the spread of the divided conductive wires 24.
Next, in step S5 of fig. 3, a molding step is performed. In the molding step, each coil 14 is bent into the shape shown in fig. 2. The 1 st folded portion 42b of each coil 14 is the 1 st apex portion 36a, and the 2 nd folded portion 42d of each coil 14 is the 2 nd apex portion 36 b.
Next, in step S6 of fig. 3, an insertion step is performed. In the insertion step, as shown in fig. 11, the plurality of coils 14 are arranged in the inner holes 20a of the stator core 20. At this time, the slot insertion wire portion 30 of each coil 14 is positioned radially inward of the corresponding slot 22. Then, the plurality of coils 14 are expanded radially outward of the stator core 20 using a jig not shown, and the slot insertion wire portions 30 are inserted into the slots 22.
In this case, since 1 coil 14 is formed by 3 divided conductors 24, the bending load required for expanding the diameter of the coil 14 can be made small. Further, the 1 st apex portions 36a forming the same coil 14 are bonded to each other by the adhesive layer 34, and the 2 nd apex portions 36b forming the same coil 14 are bonded to each other by the adhesive layer 34, so that the 3 split conductive wires 24 of the same coil 14 do not scatter. Further, the portions other than the 1 st apex portion 36a and the 2 nd apex portion 36b forming the same coil 14 are not bonded to each other by the adhesive layer 34, and therefore, the coil 14 can be reliably expanded in diameter.
In this case, the coil forming method and the lead member 10 according to the present embodiment exhibit the following effects.
The coil forming method comprises the following steps: a placement step of closely placing the plurality of coils 14 so that the plurality of divided leads 24 contact each other; a bonding step of bonding the plurality of divided leads 24 forming the same coil 14 to each other after the arrangement step; and a space enlarging step of enlarging a space between the plurality of coils 14 after the bonding step.
Accordingly, the divided leads 24 that divide each coil into a plurality of leads are bonded to each other in order to reduce the bending load, and therefore, the plurality of divided leads 24 that form the same coil 14 can be suppressed from being scattered when the interval between the plurality of coils 14 is enlarged. Therefore, the plurality of coils 14 can be easily handled.
Each of the plurality of coils 14 includes: a plurality of slot insertion line portions 30 inserted into the plurality of slots 22; and a plurality of turn portions (1 st turn portion 32a, 2 nd turn portion 32b) connecting end portions of the plurality of groove insertion line portions 30 to each other. In the bonding step, the portions (the 1 st folded portion 42b and the 2 nd folded portion 42d) of the plurality of divided leads 24 corresponding to the apexes (the 1 st apex portion 36a and the 2 nd apex portion 36b) of the plurality of bent portions (the 1 st bent portion 32a and the 2 nd bent portion 32b) are bonded to each other.
Accordingly, in the post-process (interval enlargement process, molding process, insertion process) subsequent to the bonding process, the portions (1 st folded portion 42b, 2 nd folded portion 42d) corresponding to the apexes (1 st apex portion 36a, 2 nd apex portion 36b) of the bent portions (1 st bent portion 32a, 2 nd bent portion 32b) having a relatively small amount of deformation are bonded, and therefore, the post-process can be smoothly performed.
A preparation step is performed prior to the bonding step, in which an adhesive layer 34 exhibiting adhesive ability by physically acting on the surface of at least 1 of the plurality of divided conductive wires 24 is provided, and in the bonding step, the plurality of divided conductive wires 24 are bonded to each other by physically acting on the adhesive layer 34.
Accordingly, the divided leads 24 provided with the adhesive layer 34 can be prevented from being erroneously bonded to other portions (other members) in the previous steps (preparation step, placement step) before the bonding step.
In the arranging step, the plurality of divided leads 24 are spirally and tightly wound around a winding core 40 extending in one direction.
This makes it possible to facilitate the contact of the plurality of divided leads 24.
The wire member 10 has a plurality of split wires 24, and the plurality of split wires 24 are used to shape the plurality of coils 14 inserted into the plurality of slots 22 of the stator core 20. An adhesive layer 34 is provided on at least one of the surfaces of the plurality of divided conductive wires 24 that form the same coil 14, which surfaces are in contact with each other.
According to the lead member 10, since the plurality of divided leads 24 forming the same coil 14 can be bonded to each other, the plurality of divided leads 24 can be suppressed from being scattered at the time of coil molding. Therefore, handling of the plurality of coils 14 is easy.
In the wire member 10, the adhesive layer 34 exerts the adhesive ability by being physically acted.
This prevents the divided leads 24 from being bonded to other parts (other members) before the plurality of divided leads 24 are bonded.
Next, a coil forming method according to a modification will be described. In the present modification, the molding step of step S10 in fig. 12 is performed. In the molding step, each of the strands 38 of the lead member 10 of fig. 4 described above is molded into the shape of the coil 14 shown in fig. 2.
After that, the disposing step of step S11 is performed. In the arranging step, as shown in fig. 13, the plurality of coils 14 are closely arranged in the inner hole 20a of the stator core 20 so that the plurality of split conductive wires 24 are in contact with each other. That is, the plurality of coils 14 are arranged in the inner hole 20a of the stator core 20 in a state where the plurality of coils 14 are radially reduced inward of the stator core 20. At this time, the plurality of coils 14 extend in the circumferential direction of the stator core 20.
Then, the bonding step of step S12 in fig. 12 is performed. In the bonding step, as shown in fig. 13, the heating device 70 having the same configuration as the heating device 50 described above heats the 1 st apex portion 36a and the 2 nd apex portion 36b of each coil 14, thereby exhibiting the bonding capability of the adhesive layer 34. In this way, the 1 st apex 36a of the 3 divided conductive wires 24 forming the same coil 14 are bonded to each other by the adhesive layer 34, and the 2 nd apex 36b of the 3 divided conductive wires 24 forming the same coil 14 are bonded to each other by the adhesive layer 34.
After that, the interval enlargement process of step S13 in fig. 12 is performed. In the interval enlarging step, the plurality of coils 14 positioned in the inner hole 20a of the stator core 20 are moved radially outward to enlarge the intervals therebetween. Accordingly, the slot insertion wire portion 30 of each coil 14 is located radially inward of the corresponding slot 22. Then, the insertion process of step S14 is performed. The insertion process is the same as the insertion process of step S6 described above.
Even in the coil forming method according to the modified example, the same effects as those of the coil forming method according to the flowchart of fig. 3 can be exhibited.
In the disposing step, the plurality of coils 14 are disposed in the inner holes 20a of the stator core 20 in a state where the plurality of coils 14 are radially reduced in diameter inward of the stator core 20.
This makes it possible to facilitate the contact of the plurality of divided leads 24.
In the present invention, the number of the divided wires 24 of each coil 14 (wire harness 38) may be 2 or 4 or more. The heating devices 50, 70 may not be high-frequency induction heating coils. The adhesive layer 34 may not be an adhesive layer that exhibits adhesive ability when an external force is applied thereto, and a normal adhesive may be used.
The coil forming method and the lead member according to the present invention are not limited to the above embodiments, and it is needless to say that various configurations can be adopted within a range not departing from the gist of the present invention.
Claims (8)
1. A coil forming method for forming a plurality of coils inserted into a plurality of slots of a stator core,
a plurality of the coils respectively include a plurality of split wires,
the coil forming method comprises a configuration step, a bonding step and an interval enlargement step, wherein,
in the disposing step, the plurality of coils are closely disposed so that the plurality of divided leads are in contact with each other;
after the arranging step, bonding a plurality of the segment leads forming the same coil to each other in the bonding step;
after the bonding step, the space between the plurality of coils is enlarged in the space enlarging step,
a plurality of the coils respectively having a plurality of slot insertion wire portions and a plurality of turn portions, wherein,
a plurality of the slot insertion line portions are inserted into a plurality of the slots;
a plurality of the turning portions connect ends of the plurality of the groove insertion line portions to each other,
in the bonding step, the portions of the plurality of divided leads corresponding to the apexes of the plurality of bent portions are bonded to each other,
in the bonding step, a portion other than the portion corresponding to the vertex is not bonded.
2. The coil forming method according to claim 1,
a preparation step of performing a physical action on the surface of at least 1 of the plurality of divided conductors to develop an adhesive property, prior to the bonding step,
in the bonding step, the plurality of divided leads are bonded to each other by applying a physical action to the adhesive layer.
3. The coil forming method according to claim 1,
in the arranging step, the plurality of divided wires are spirally and tightly wound around a winding core extending in one direction.
4. The coil forming method according to any one of claims 1 to 3,
in the disposing step, the plurality of coils are disposed in the inner hole of the stator core in a state where the plurality of coils are radially reduced in diameter toward an inner side of the stator core.
5. The coil forming method according to claim 2,
the plurality of the division wires forming the same coil are 3,
in the preparation step, the plurality of divided conductive wires are arranged in a row, and the adhesive layer is provided on an outer surface of a divided conductive wire located at the center among 3 divided conductive wires in which 1 coil is molded.
6. The coil forming method according to claim 3,
in the bonding step, the plurality of divided conductive wires are bonded to each other by heating the plurality of divided conductive wires in a state of being wound around the winding core.
7. A wire member having a plurality of wire bundles for forming a plurality of coils, wherein the plurality of coils are inserted into a plurality of slots of a stator core, and the wire member is a member before the plurality of wire bundles are subjected to coil forming,
the wire member is characterized in that it is,
a plurality of the wire bundles are arranged in a row,
the plurality of lead bundles respectively include a plurality of divided leads arranged in a row along an arrangement direction of the plurality of lead bundles and used for molding the same coil,
an adhesive layer is provided on at least one of surfaces of the plurality of divided conductors that form the same wire harness and are in contact with each other,
the adhesive layer is not provided between the adjacent ones of the plurality of the wire bundles.
8. The wire member according to claim 7,
the adhesive layer exerts adhesive ability by being physically acted.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018231413A JP6802244B2 (en) | 2018-12-11 | 2018-12-11 | Coil forming method and wire member |
| JP2018-231413 | 2018-12-11 |
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| Publication Number | Publication Date |
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| CN111313633A CN111313633A (en) | 2020-06-19 |
| CN111313633B true CN111313633B (en) | 2022-06-07 |
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| CN (1) | CN111313633B (en) |
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| JP5663191B2 (en) * | 2010-04-27 | 2015-02-04 | 本田技研工業株式会社 | Motor stator |
| JP2011234504A (en) * | 2010-04-27 | 2011-11-17 | Honda Motor Co Ltd | Method for manufacturing stator of motor |
| JP5920258B2 (en) * | 2013-03-19 | 2016-05-18 | 株式会社安川電機 | Coil manufacturing member, coil, rotating electric machine, and method of manufacturing coil |
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- 2018-12-11 JP JP2018231413A patent/JP6802244B2/en not_active Expired - Fee Related
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2019
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| CN86101029A (en) * | 1985-01-07 | 1986-09-24 | 通用电气公司 | The insulation of Electric Motor armature coil |
| CN1864315A (en) * | 2003-08-09 | 2006-11-15 | 丹福斯有限公司 | A method of making a coil for an electrical motor |
| CN102237729A (en) * | 2010-04-27 | 2011-11-09 | 本田技研工业株式会社 | Motor stator and manufacturing method of motor stator |
| CN107004485A (en) * | 2014-12-11 | 2017-08-01 | Ckd株式会社 | The manufacture method of coil sheet material, coil and coil |
| JP2017163666A (en) * | 2016-03-08 | 2017-09-14 | 本田技研工業株式会社 | Stator wiring and stator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111313633A (en) | 2020-06-19 |
| JP6802244B2 (en) | 2020-12-16 |
| JP2020096422A (en) | 2020-06-18 |
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