JP2006006010A - Stator manufacturing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve insulation quality of a stator of a rotating electric machine.
A method of manufacturing a stator of a rotating electrical machine includes a step of manufacturing a stator core having a plurality of teeth (S1000), a step of forming a coil in a shape matching a shape of a tooth (S1100), and a coil The coil is wound around the teeth (S1200), between the coil windings, between the coil and the adjacent coil wound around the tooth around which the coil is wound, and fixed to the coil It includes a regulation step (S1250) that regulates at least one of the cores not to come into contact with the core and a processing step (S1400) that insulates the coil wound around the stator core.
[Selection] Figure 1

Description

  The present invention relates to a method for manufacturing a rotating electrical machine including a rotor and a stator, and more particularly to a method for manufacturing a stator.

  Conventionally, in a rotating electrical machine composed of a rotor and a stator, the stator manufacturing method of the rotating electrical machine first manufactures a stator core by stacking punched silicon steel sheets. Then, insulating paper is inserted into the manufactured stator core. A coil is formed by winding a winding of a conductor coated with an enamel or the like in an annular shape. Next, the wound coil is inserted into the stator core. Then, insulating paper is assembled between each phase of the stator core. Thereafter, the coil end portion is formed into a predetermined shape. And a stator is manufactured through the process of performing a connection process etc. in a terminal part.

  A method for manufacturing a stator is disclosed in the following publications. Japanese Patent Application Laid-Open No. 2003-244907 (Patent Document 1) discloses that even when a highly heat-conductive varnish with poor impregnation properties is used, the gap between the coils is impregnated with the varnish so that the heat conductivity between the coils, the coil, and the stator The manufacturing method of the electric motor which improves the thermal conductivity in the meantime and improves heat removal is disclosed. This method for manufacturing an electric motor is a method for manufacturing an electric motor by inserting a winding into a status lot of the electric motor. In the method of manufacturing the electric motor, the winding is inserted into the slot insulating paper in a state where the slot insulating paper inserted into the status lot is protruded from the tooth portion of the status lot toward the inner periphery of the stator. Thereafter, while the varnish is dripped and impregnated in the winding, the protruding portion of the slot insulating paper is bent inward with a coil compression jig inserted inside the stator, and the winding is compression molded.

According to the method for manufacturing an electric motor disclosed in Patent Document 1, even when a highly heat-conductive varnish with poor impregnation properties is used, the gap between the coils can be impregnated with the varnish. Furthermore, the slot space factor can be improved. This fills the gaps between the coils with varnish to improve the thermal conductivity between the coils and between the coil and the stator. That is, the heat removal property can be improved. Furthermore, copper loss can be reduced by reducing the coil gap and increasing the coil cross-sectional area. And the wedge etc. are made unnecessary and the number of parts at the time of manufacturing an electric motor and the number of processes are reduced. That is, the manufacturing cost can be reduced.
Japanese Patent Laid-Open No. 2003-244907

  However, in the method of manufacturing an electric motor disclosed in Patent Document 1, for a coil that is an important component in insulation, 1) assembly to a winding frame through a nozzle, 2) coil insertion with an insertion jig, 3) There is a problem that processing with a large damage to the insulation coating, such as forming with a coil end forming jig, is performed at various points in the process.

  That is, insulating paper is assembled to the stator core, and the insulating material is also attached to the coil. Therefore, in the step of winding the coil that has been wound around the stator core, the coil tension, the pressure at the time of insertion, or the contact between the coil and the stator core, Various powers are added. As a result, the insulating paper or the insulating material may be peeled off. Therefore, the insulating material of the coil is a slip that indicates the flexibility of the film to bend the copper wire of the coil, the resistance to crazing, the resistance to the influence of moisture absorption, the wear resistance, and the slipperiness of the film surface. It is necessary to satisfy requirements such as sex. Therefore, there is a problem that selection of the insulating material for the coil is limited. Therefore, there is a problem that an insulating material including an inorganic material having higher heat resistance and thermal conductivity cannot be used.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a method of manufacturing a stator of a rotating electrical machine with improved insulation quality.

  A method for manufacturing a stator according to a first aspect of the present invention is a method for manufacturing a stator for a rotating electrical machine including a rotor and a stator. The stator includes a stator core having a plurality of teeth and a coil wound around the teeth. A method for manufacturing a stator includes a step of forming a coil in a shape that matches a shape of a tooth, a step of manufacturing a stator core, a step of winding a coil around a tooth, and a winding of the coil and a winding of the coil. During the first time, at least one of the second between the coil and the adjacent coil wound on the tooth adjacent to the tooth around which the coil is wound and at least one between the third of the coil and the stator core do not contact each other. And a processing step of performing an insulation process on the coil wound around the stator core.

  According to the first invention, in the step of forming the coil, the coil is formed in a shape that matches the shape of the teeth. Then, in the step of winding the coil around the teeth, the coil is wound around the teeth. In the restricting step, at least one of the first between the coil winding and the second winding, the second between the coil and the adjacent coil, and the third between the coil and the stator core is restricted from contacting. To do. In the processing step, the coil wound around the stator core is subjected to an insulation process (for example, an insulation process in which a resin is injection-molded to the coil). As a result, after the coil is wound around the stator core, the resin can be infiltrated between the first, second, and third periods to perform insulation treatment. At this time, for example, the first interval, the second interval, and the third interval are regulated so as to have predetermined intervals corresponding to the respective intervals. In this way, it is possible to prevent a decrease in insulation quality due to a short circuit between the first period, the second period, and the third period, withstand the dielectric breakdown voltage, and leave an interval at which partial discharge does not occur. In addition, since the resin is infiltrated after the coil is regulated to have a predetermined interval, the gap between the first, the second and the third is filled with the resin, so that the adhesion is improved. . When the adhesion is improved, the thermal diffusibility from the coil to the stator core is improved. Therefore, the thermal conductivity in the stator can be improved. Furthermore, in order to perform insulation treatment after winding the coil around the stator core, it is necessary to satisfy the requirements for insulation quality, reliability, and strength based on the above-mentioned flexibility, crazing property, and sliding property in the manufacturing process. Disappears. Therefore, the selection of the insulating material is not limited. Therefore, it is possible to use an insulating material including an inorganic material having higher heat resistance and higher thermal conductivity, which could not be used because the requirement for damage in the manufacturing process is not satisfied. Therefore, the thermal diffusibility from the coil to the stator core is further improved. As a result, the current density can be improved and the performance of the rotating electrical machine can be improved. Therefore, the manufacturing method of the stator of the rotary electric machine which improved the insulation quality can be provided.

  In the method for manufacturing a stator according to the second invention, in addition to the configuration of the first invention, the regulating step includes a step of regulating so as to have a predetermined interval according to the regulated object.

  According to the second invention, in the regulation step, regulation is performed so as to have a predetermined interval according to the subject to be regulated. That is, by controlling the coil to have a corresponding spacing between the coil winding and between the coil, between the coil and the adjacent coil, and between the coil and the stator core, the dielectric breakdown voltage is obtained. It is possible to withstand a space where partial discharge does not occur. That is, the insulation strength according to the insulation location can be ensured.

  In the stator manufacturing method according to the third aspect of the invention, in addition to the configuration of the first or second aspect of the invention, the regulating step is performed by inserting an insulating member between the third and preliminarily determining the third interval. Restricting to have a certain interval.

  According to the third invention, in the regulating step, an insulating member (for example, a porous material) is inserted between the coil and the stator core, and a predetermined interval is set between the coil and the stator core. It is regulated to have. Accordingly, in the processing step, the coil is subjected to an insulating process (for example, an insulating process in which resin is injection-molded to the coil), so that the resin penetrates between the coil and the stator core, and the coil The insulation quality between the stator and the stator core can be improved.

  In the stator manufacturing method according to the fourth aspect of the invention, in addition to the configuration of the third aspect of the invention, the regulation step is performed by inserting a porous material between the third and predetermining the third interval. Restricting to have an interval.

  According to the fourth invention, in the regulation step, a porous material is inserted between the coil and the stator core, and the coil and the stator core are regulated to have a predetermined interval. . The porous material is, for example, a foamed resin that foams when heat is applied. When the foamed resin is foamed, the coil and the stator core are regulated to have a predetermined interval. In the processing step, the coil and the stator core are formed because the coil penetrates into the voids in the foamed resin by performing an insulation process on the coil (for example, an insulation process in which resin is injection-molded to the coil). It is possible to improve the insulation quality between the two.

  In the stator manufacturing method according to the fifth invention, in addition to the configuration of any one of the first to fourth inventions, the regulating step includes inserting an insulating member between the second and the second Restricting to have a predetermined interval.

  According to the fifth invention, in the regulating step, an insulating member (for example, an insulating spacer) is inserted between the coil and the adjacent coil, and the coil is regulated so as to have a predetermined interval. This prevents a short circuit due to contact between the coil and the adjacent coil when performing an insulating process (for example, an insulating process in which resin is injection-molded on the coil) in the processing step. By regulating so as to have a predetermined interval, it is possible to leave an interval between the coil and the adjacent coil that can withstand a dielectric breakdown voltage and does not cause partial discharge. Therefore, it is possible to prevent a decrease in insulation quality between the coil and the adjacent coil.

  In the stator manufacturing method according to the sixth invention, in addition to the configuration of any one of the first to fifth inventions, the regulating step includes inserting an insulating member between the first and Restricting to have a predetermined interval.

  According to the sixth invention, in the restricting step, an insulating member (for example, an insulating spacer) is inserted between the windings and the winding is restricted so as to have a predetermined interval. This prevents a short circuit due to contact between the windings of the coil when the coil is subjected to an insulating process (for example, an insulating process in which a resin is injection-molded with respect to the coil) in the processing step. At the same time, by restricting the coil so as to have a predetermined interval, it is possible to withstand a dielectric breakdown voltage between the windings of the coil and leave an interval at which partial discharge does not occur. Therefore, it is possible to prevent a decrease in insulation quality between the windings of the coil.

  In the stator manufacturing method according to the seventh invention, in addition to the configuration of any one of the first to fifth inventions, the regulating step includes attaching a powdery insulating member between the first, And a step of restricting the interval to have a predetermined interval.

  According to the seventh invention, in the regulating step, a powder-like insulating member (for example, epoxy powder) is adhered between the windings, and the gap between the windings is predetermined. It is regulated to have a specified interval. As a result, in the processing step, when performing insulation treatment on the coil (for example, insulation treatment in which resin is injection-molded with respect to the coil), the gap between the coil windings is insulated. Since the member penetrates, the insulation breakdown is prevented between the windings of the coil by preventing the short circuit due to the contact between the windings and controlling the coil to have a predetermined interval. It can withstand voltage and can be spaced at intervals where partial discharge does not occur. Therefore, it is possible to prevent a decrease in insulation quality between the windings of the coil.

  In the stator manufacturing method according to the eighth invention, in addition to the structure of the seventh invention, the regulating step includes a step of attaching a powdery insulating member to the winding before the coil is formed. .

  According to the eighth invention, in the regulating step, before the coil is formed, a powdery insulating member (for example, epoxy powder) is attached to the winding. Thus, in the step of forming the coil, the coil can be formed so that a powdery insulating member adheres between the windings. Therefore, the coil winding is restricted to have a predetermined interval between the windings of the coil.

  In the stator manufacturing method according to the ninth invention, in addition to the structure of any one of the first to eighth inventions, the processing step includes a step of attaching an insulating member containing an inorganic insulating material to the coil. .

  According to the ninth invention, in the processing step, an insulating member containing an inorganic material (for example, a resin having a high content of an inorganic material) is attached to the coil. Since the insulation treatment is performed after the coil is wound around the stator core, it is not necessary to satisfy the requirements for insulation quality, reliability, and strength based on flexibility, crazing resistance, and slipperiness. Therefore, the selection of the insulating material is not limited. Therefore, from the coil to the stator core, it is possible to use a resin with a high content of inorganic material with higher heat resistance and thermal conductivity that could not be used because it does not satisfy the requirements for damage in the conventional manufacturing process. It is possible to improve the thermal diffusivity.

  Hereinafter, a method for manufacturing a stator according to an embodiment of the present invention will be described with reference to the drawings. In the following description, the same parts are denoted by the same reference numerals. Their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

<First Embodiment>
The rotating electrical machine includes a stator and a rotor. And a stator is comprised from a stator iron core and a coil. The stator core according to the present embodiment has a hollow cylindrical shape. The stator core is formed by connecting a plurality of partial stator cores. Each of the plurality of partial stator iron cores is provided with teeth having a shape protruding toward the inner peripheral side. The coil is wound around this tooth. A stator is formed by connecting coils wound around a plurality of teeth, respectively.

  A method for manufacturing a stator for a rotating electrical machine according to the present embodiment will be described with reference to FIG. In step (hereinafter, step is referred to as S) 1000, the rough shaped material is processed by cutting or the like to form a partial stator core. That is, as shown in FIG. 2A, the partial stator core 200 is formed into a shape including teeth 202 having a protruding shape.

  In S1100, coil 100 is formed into a shape that matches the shape of teeth 202 of partial stator core 200. Here, the “shape that matches the shape of the teeth 202” is designed to have a predetermined interval between the coil 100 and the teeth 202 when the coil 100 is wound around the teeth 202. Shape. In the present embodiment, as shown in FIG. 2B, the coil 100 is formed by winding a conductor flat plate in a ring shape. Each dimension of the coil 100 is designed to be larger than the dimension of the corresponding tooth 202. The flat plate of the conductor is not particularly limited, but is a copper plate, for example, in the present embodiment.

  In S1200, the coil 100 is assembled to the partial stator core 200. That is, as shown in FIG. 3, the opening part of the coil 100 opened cyclically | annularly is assembled | attached to the part which the teeth 202 protruded. Then, the plurality of partial stator cores 200 are connected in a cylindrical shape to form a stator core. The coil 100 may be assembled after the stator core is formed. The stator core may be formed by laminating a predetermined number of electromagnetic steel plates.

  At S1250, between coil 100 winding and coil, between coil 100 and the adjacent coil wound around tooth 202 around which coil 100 is wound, and between the coil and stator core. The coil is restricted so that at least one of them does not contact. Specifically, restriction is performed so as to have a predetermined interval in accordance with the above-described restriction target.

  In the present embodiment, as shown in FIG. 4, a plurality of insulating spacers 120 and 130 are inserted between the windings of the coils 100 and 110 so that the space between the windings and the windings. Are regulated to have a predetermined interval. The insulating spacers 120 and 130 have a predetermined interval thickness. The shape of the insulating spacers 120 and 130 is not particularly limited as long as it is regulated so as to have a predetermined interval between the windings by being inserted between the windings of the coils. In this embodiment, for example, the shape of the insulating spacers 120 and 130 opens to the lower side of the page of FIG. The shape). A plurality of insulating spacers 120 and 130 are inserted between the windings of the coils 100 and 110, respectively.

  Further, by inserting an insulating spacer 140 between the coil 110 adjacent to the coil 100, the coil 100 and the coil 110 are regulated so as to have a predetermined interval.

  The insulating spacers 120, 130, and 140 are not particularly limited as long as they are organic insulating members, but examples thereof include the following materials. Materials used as the insulating spacers 120, 130, 140 are aromatic nylon (registered trademark), polyurethane (UEW), epoxy, phenol, polyester (PEW), polyethylene terephthalate (reinforced PET), polyetherimide (PEI), With polyethersulfone (PES), polyesterimide (EI), polyamideimide (PAI), polyphenylene sulfide (PPS), liquid crystal (LCP), polyimide (PI), polyetheretherketone (PEEK), fluororesin (PTFE), etc. is there. The insulating spacers 120, 130, and 140 may be insulating paper, or may be a porous material such as foamed resin that foams when heated.

  Further, as shown in FIG. 5, an insulating member having a shape covering the surface of the tooth 202 with which the coil 100 abuts is inserted between the coil 100 and the partial stator core 200 in advance in the tooth 202 or the coil 100. Keep it. In this embodiment, for example, a porous material such as foamed resin 600 that foams when heat is applied is used as the insulating member, but the insulating member is not particularly limited. For example, an organic insulating member may be used as the insulating member in the same manner as the insulating spacers 120, 130, and 140 described above. When the inserted foamed resin 600 is foamed by applying heat or the like, the coil 100 and the partial stator core 200 are regulated to have a predetermined interval.

  In S1300, connection processing is performed. That is, a transition member such as a bus bar is connected to the coil end portion 204 wound around each tooth so as to correspond to the U phase, the V phase, and the W phase.

  In S1400, a post-insulation process is performed. In the present embodiment, the post-insulation process is a process of performing an insulation process on the coil 100 wound around the partial stator core 200. That is, as shown in FIG. 6, a resin 600 that is an organic insulating member is attached to the coil 100 wound around the partial stator core 200 by injection molding. As for the insulation process, in this embodiment, an insulation process is performed in which a resin, which is an organic insulation member, is pressed and adhered to the coil 100 by injection molding, but is not particularly limited. For example, the insulation treatment may be performed on the coil by impregnating a stator core with the coil wound around a container filled with an organic insulating material such as an enamel material. Alternatively, the insulation may be performed by vacuum impregnation in which a stator iron core around which a coil is wound is put in a container and hermetically sealed, and an insulating material is filled in a vacuum atmosphere in which the air is removed.

  In this manner, the gaps between the windings of the coil 100, between the coils 100 and 110, and between the coil 100 and the stator core are filled with the resin by the insulating process in the post-insulation process. So that it penetrates. Further, the resin penetrates into the voids inside the foamed resin. And the stator 400 as shown in FIG. 7 is manufactured. In S1500, final inspection such as inspection of defective products of the manufactured stator is performed.

  In the post-insulation process, the resin 600 that is injection-molded with respect to the coil 100 includes an inorganic material. The inorganic material is not particularly limited as long as it is a material having higher heat resistance and thermal conductivity than the resin, and examples thereof include powdery alumina, silica, and montmorillonite.

  In the present embodiment, since the insulation treatment is performed by injection molding the resin after winding the coil 100 around the stator core, the content of the inorganic material can be increased. That is, for example, according to a conventional method of winding a coil that has been subjected to an insulation treatment using an organic insulating member such as enamel around a stator core, the coil is bent and the coil is wound. In order to avoid peeling of the insulating member in the organic insulating member, the organic insulating member can contain an inorganic material only about 40% wt with respect to the weight of the insulating member. However, according to the method for manufacturing a stator according to the present invention, a resin having an inorganic material content of 30 to 300 wt% with respect to the weight of the resin can be used for the insulation treatment.

  Note that the “predetermined interval” means that the dielectric breakdown voltage is tolerated and partial discharge occurs depending on the winding between the windings of the coil 100 and between the coil 100 and the coil 110, respectively. There is no particular limitation as long as there is no distance. Here, the “dielectric breakdown voltage” is a voltage that degrades the insulation determined according to the voltage applied to the coil 100 and the distance between the winding and the winding or the distance between the coil 100 and the coil 110. Further, “partial discharge” refers to a discharge that is partially generated in an insulating member between windings or between coils according to a distance when a voltage is applied between windings or between coils.

  The “predetermined interval” between the coil 100 and the stator core is not particularly limited as long as it is a distance that can be insulated between the coil 100 and the stator core.

  Furthermore, it is preferable to perform a blackening treatment for forming a copper oxide film on the surfaces of the coils 100 and 110. If it does in this way, in coil 100,110, a surface area will increase by a membrane | film | coat and the adhesiveness of coil 100,110 and insulating spacer 120,140 or resin 600 can be improved.

  As described above, according to the method for manufacturing the stator according to the present embodiment, after the coil is wound around the stator core, the coil is wound between the windings and between the coil and the adjacent coil. Insulating treatment can be performed by infiltrating a resin between the coil and the stator core. At this time, an insulating member is provided to regulate the coil so as to have predetermined intervals corresponding to each of the winding, the winding, the adjacent coil, and the coil and the stator core. To do. In this way, between the coil winding and the winding, between the coil and the adjacent coil, and between the coil and the stator core, while preventing deterioration of the insulation quality due to a short circuit, withstand the dielectric breakdown voltage, An interval at which partial discharge does not occur can be provided.

  In addition, after restricting the coil to have a predetermined interval, in order to infiltrate the resin, the gap between the winding and the winding, between the coil and the adjacent coil, and between the coil and the stator core As a result, the adhesion is improved. When the adhesion is improved, the thermal diffusibility from the coil to the stator core is improved. Therefore, the thermal conductivity in the stator can be improved.

  Furthermore, since the insulation treatment is performed after the coil is wound around the stator core, it is not necessary to satisfy the requirements of insulation quality, reliability, and strength based on flexibility, anti-crazing property, and slip property. Therefore, the selection of the insulating material is not limited.

  Therefore, it is possible to use an insulating material including an inorganic material having higher heat resistance and higher thermal conductivity, which could not be used because the requirement for damage in the conventional manufacturing process is not satisfied. Therefore, the thermal diffusibility from the coil to the stator core is further improved. As a result, by improving the insulation quality, the current density can be improved and the performance of the rotating electrical machine can be improved.

<Second Embodiment>
Hereinafter, a method for manufacturing the stator according to the second embodiment will be described. The stator manufacturing method according to the present embodiment is different from the procedure of the stator manufacturing method according to the first embodiment in place of the insulating spacer 120 between the windings of the coil. The difference is that a powdery insulating member is attached. About other procedures, it is the same procedure as the manufacturing method of the stator which concerns on 1st Embodiment. Therefore, detailed description thereof will not be repeated.

  As shown in FIG. 8, in the present embodiment, a powdery insulating member 500 is attached between the windings of the coils 100 and 110 wound in an annular shape. By attaching a powdery insulating member 500 having a predetermined interval between the windings, the winding is regulated to have a predetermined interval between the windings. . In the present embodiment, the powder-like insulating member 500 is, for example, an epoxy powder.

  As shown in FIG. 9, when the resin 600 is injection-molded with respect to the coil 100 in the post-insulation step, the gap between the windings of the coil formed by the powdery insulating member 500 is The resin 600 penetrates.

  As described above, the method for manufacturing a stator according to the present embodiment has the same effects as those of the first embodiment described above.

  In the present embodiment, the powdery insulating member 500 is attached between the windings after the annularly wound coil 100 is formed, but there is no particular limitation. . For example, as shown in FIG. 10, the coil 100 may be formed by annularly winding a conductor flat plate to which a powdery insulating member 500 is previously attached.

<Third Embodiment>
A method for manufacturing the stator according to the third embodiment will be described below. A method for manufacturing the stator of the rotating electrical machine according to the present embodiment will be described with reference to FIG. In the flowchart shown in FIG. 11, the same steps as those in the flowchart shown in FIG. 1 are given the same step numbers. Therefore, detailed description thereof will not be repeated here.

  In S2000, at least one of the windings of the coil 100, between the coil 100 and the adjacent coil 110, and between the coil and the stator core is regulated so as not to contact. Specifically, it is regulated so as to have a predetermined interval according to the above-mentioned subject to be regulated.

  In this embodiment, as shown in FIG. 12A, the coil 100 is predetermined between the windings in a state where the coil 100 that has not been subjected to the insulation treatment is wound in an annular shape. Widened to have a gap.

  In addition, between the coil 100 and the adjacent coil 110 and between the coil 100 and the stator core are regulated so as to have a predetermined interval by the same procedure as that of the first embodiment described above. Therefore, detailed description thereof will not be repeated.

  In S2100, a post-insulation process is performed on coil 100 wound around the stator core. That is, as shown in FIG. 12B, the insulating material is impregnated. The coil 100 is further coated by impregnation after drying.

  In S2200, connection processing is performed. That is, a transition member such as a bus bar is connected to the coil end portion 204 wound around each tooth so as to correspond to the U phase, the V phase, and the W phase.

  In S2300, the insulation of the connection part is performed. That is, as shown in FIG. 13, the insulating member is impregnated and coated on the coil end portion 204 that has been connected to the crossover member.

  As described above, according to the method for manufacturing the stator according to the present embodiment, in addition to the same effects as those of the first embodiment described above, the coil can be insulated by performing the impregnation coating. it can. Therefore, in comparison with the insulation treatment by injection molding, which requires a furnace or injection molding machine for the process of putting the object to be molded into the mold and raising the temperature and injection molding, the insulation treatment by the impregnation coating is less expensive to manufacture. Reduction can be achieved.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

It is a flowchart which shows the manufacturing method of the stator which concerns on 1st Embodiment. It is a figure which shows the external appearance of the coil in 1st Embodiment, and a partial stator core. It is a figure which shows the external appearance of the coil wound around the stator core in 1st Embodiment. It is a figure which shows the insulation spacer inserted between the coil | winding of the coil in 1st Embodiment, and a coil | winding, and between a coil and an adjacent coil. It is a figure which shows the foamed resin adhering between the coil and stator core in 1st Embodiment. It is a figure which shows the cross section of the stator which concerns on 1st Embodiment. It is a figure which shows the external appearance of the stator which concerns on 1st Embodiment. It is a figure which shows the powdery insulating member attached between the coil | winding of the coil in 2nd Embodiment, and a coil | winding. It is a figure which shows the cross section of the stator which concerns on 2nd Embodiment. It is a figure which shows the process in which the coil | winding with which the powdery insulating member in 2nd Embodiment adheres is wound, and a coil is formed. It is a flowchart which shows the manufacturing method of the stator which concerns on 3rd Embodiment. It is a figure which shows the external appearance of the coil in 3rd Embodiment. It is a figure which shows the cross section of the stator which concerns on 3rd Embodiment.

Explanation of symbols

  100, 110 Coil, 120, 130, 140 Insulating spacer, 200 Partial stator core, 202, 206 Teeth, 204 Coil end, 300 Insulating material, 400 Stator, 500 Powdered insulating member, 600 Foamed resin.

Claims (9)

A method for manufacturing a stator of a rotating electrical machine including a rotor and a stator, wherein the stator includes a stator core having a plurality of teeth, and a coil wound around the teeth,
Forming the coil in a shape that matches the shape of the teeth;
Producing the stator core;
Winding the coil around the teeth;
A first interval between the windings of the coil, a second interval between the coil and an adjacent coil wound around a tooth around which the coil is wound, and the coil and the stator. A regulation step for regulating at least one of the third core and the iron core so as not to contact;
And a processing step of performing an insulation process on the coil wound around the stator core.   The method of manufacturing a stator according to claim 1, wherein the regulating step includes a step of regulating so as to have a predetermined interval according to an object to be regulated.   3. The stator according to claim 1, wherein the restricting step includes a step of restricting the insulating member to be inserted between the third members so that the third member has a predetermined interval. Production method.   The manufacturing of the stator according to claim 3, wherein the regulating step includes a step of inserting a porous material between the third and regulating so as to have a predetermined interval between the third. Method.   The said regulation step includes the step which inserts an insulation member between said 2nd, and regulates so that it may have a predetermined interval between said 2nd. Stator manufacturing method.   The said regulation step includes the step which inserts an insulation member between said 1st, and regulates so that it may have a predetermined space | interval between said 1st. Stator manufacturing method.   6. The method according to claim 1, wherein the regulating step includes a step of regulating the first gap between the first by attaching a powdery insulating member to the first gap. A method for producing the stator according to 1.   The method of manufacturing a stator according to claim 7, wherein the regulating step includes a step of attaching the powdery insulating member to the winding before the coil is formed.   The method of manufacturing a stator according to claim 1, wherein the processing step includes a step of attaching an insulating member including an inorganic insulating material to the coil.

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