Stator for motor manufactured from wound soft magnetic thin strip

Abstract

To provide a stator for a motor that can be manufactured with low material waste and high work efficiency, and at low cost, without undergoing processes such as press punching or individually stacking soft magnetic thin strips.SOLUTION: The stator for a motor is manufactured by winding a single-layer or multi-layer laminated ribbon-shaped soft magnetic thin strip, coated with adhesive around a polygonal prism-shaped mold with a polygonal base, or winding the ribbon-shaped soft magnetic thin strip and then cutting a laminated thick film body formed by impregnating the thin strip in the adhesive at one or multiple locations along the prism's side surface, extracting the resulting magnetic component, where the yoke and teeth are integrated, and then arranging multiple such magnetic components.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a stator for a motor that is manufactured by processing a wound soft magnetic ribbon. [Background technology]

[0002] Motor losses include copper loss, iron loss, and mechanical loss, but iron loss depends on the soft magnetic material used. Typical motors use soft magnetic steel sheets for the iron core. Soft magnetic materials include amorphous materials, which have higher magnetic permeability and lower hysteresis loss than magnetic steel sheets, and high-performance materials such as nanocrystalline materials. These materials are very thin, with a thickness of around 0.025 mm, and have low eddy current loss. For this reason, amorphous ribbon can reduce iron loss to about one-tenth of that of magnetic steel sheets. However, nanocrystalline ribbon has low rigidity and is a brittle material, which poses many manufacturing challenges, making it difficult to create energy-efficient, low-loss motors.

[0003] A commercially available motor using an amorphous ribbon is an axial gap type in which the stator is made only of the iron core, which is the magnetic field generating part, without an accompanying yoke, and has a structure in which the rotor is sandwiched between the stator at two points via gaps on both sides, achieving an energy efficiency of 96% (Non-Patent Document 1). Also, a prototype radial gap motor using an amorphous ribbon for the stator has achieved an efficiency of 97.2% (Non-Patent Document 2).

[0004] The process of creating a stator by stamping out electromagnetic steel sheets requires high power costs, and requires stamping out the teeth and yokes into a circumferential shape, resulting in material loss, and then laminating and assembling them to create the stator. Amorphous, nanocrystalline block cores, toroidal cores, and cut cores for transformers are commercially available, but no motor prototypes have been made by processing them into the shape of a stator. Based on existing concepts, only a few prototypes have been made using the stamping method for radial gap motors with low iron loss, using amorphous and nanocrystalline thin ribbons, which have high hardness.

[0005] Although it is possible to create a stator by wire-cutting an amorphous or nanocrystalline block core, the cutting process takes time and the cutting costs are high. This method has only been used for prototyping using nanocrystalline laminated thick films.

[0006] In Patent Document 1, amorphous alloy ribbons are thin and hard, and conventional press punching methods have a short die life, making them unsuitable for producing stators. However, by revising the design of the punching die, it has become possible to press punch amorphous ribbons in the same way as conventional electromagnetic steel sheets. As a result, it has become possible to produce stators from amorphous ribbons using the same techniques as electromagnetic steel sheets. However, press punching still results in a significant amount of material loss other than punching, and requires a process of stacking a large number of punched ribbons.

[0007] In Patent Document 2, the teeth core and the adjacent core-back core (yoke) are both constructed from laminates made by cutting foil strips of soft magnetic material one by one and stacking multiple sheets, which are then combined to create a radial gap type stator.

[0008] Patent Document 3 discloses a rotor including a rotating shaft and a rotor core that rotates around the rotating shaft, and a stator including a stator core arranged opposite the rotor core, where the stator core, with the teeth and back core joined together, has a circular shape, a back yoke with multiple recesses along the inner circumference, and teeth with one end fitted in the recesses and the other end protruding toward the rotor core, forming a composite stator with the amorphous metal of the teeth sandwiched between the yoke. This has the advantage that the yoke and teeth can be made of different materials, but requires a process of fitting the teeth into the yoke one by one.

[0009] In Patent Document 4, when cutting out a radial gap type stator with teeth and yokes connected from a laminate of amorphous ribbons by wire electric discharge machining, molten material adheres to the cut surface of the ribbon, which would increase iron loss. To avoid this, wire electric discharge machining is performed underwater, and low iron loss equivalent to that achieved by laminating thin sheets processed into a core shape is achieved. The situation remains unchanged, requiring a multi-layer lamination process before wire electric discharge machining.

[0010] As described above, attempts have been made to improve the conventional method of press-punching and laminating, but the problems of long work processes and high manufacturing costs have not been resolved. There has been a long awaited demand for a motor stator that can be manufactured without going through the conventional process of press-punching and laminating soft magnetic ribbons one by one. [Prior art documents] [Patent documents]

[0011] [Patent Document 1] Patent No. 7129048 [Patent Document 2] Japanese Patent Application Publication No. 2023-087409 [Patent Document 3] Japanese Patent Application Publication No. 2019-068567 [Patent Document 4] Japanese Patent Application Laid-Open No. 2008-198898 [Non-patent literature]

[0012] [Non-Patent Document 1] "Industrial Ultra-High Efficiency Permanent Magnet Synchronous Motor Amorphous Motor", [online], Hitachi Industrial Equipment Systems Co., Ltd., [Retrieved February 1, 2024], Internet<URL:https: / / www.hitachi-ies.co.jp / products / motor / amorphous / index.html> [Non-patent document 2] “Development of High-Efficiency Technology for Motors Using Amorphous Metals”, [online], October 24, 2018, Hitachi Metals, Ltd., [Retrieved February 1, 2024], Internet<URL:https: / / www.proterial.com / press / backnumber / 2018 / n1024.html> Summary of the Invention [Problem to be solved by the invention]

[0013] To provide a motor stator that can be manufactured at low cost through a work process with good work efficiency, efficient use of materials, and little waste of materials, without going through the process of press-punching and laminating soft magnetic ribbons one by one as in the conventional manufacturing method. [Means for solving the problem]

[0014] The stator, which is one of the components of the motor according to the present invention, is characterized in that it is constructed by winding a ribbon-shaped soft magnetic thin strip, which is a single layer or multiple layers coated with adhesive, around a polygonal pillar-shaped mold with a polygonal bottom, or by winding the ribbon-shaped soft magnetic thin strip and then impregnating it with adhesive to form a laminated thick film, which is then cut at one or multiple points along the pillar side surface, to extract magnetic components in which the yoke and teeth are integrated, and arranging multiple of the magnetic components.

[0015] The stator, which is one of the components of the motor according to the present invention, is characterized in that it is configured by tightly adhering a ribbon-shaped soft magnetic ribbon, which is laminated in a single layer or multiple layers and coated with an adhesive, around a cylindrical inner mold having a polygonal or circular bottom surface, and winding the soft magnetic ribbon around a cylindrical outer mold having a polygonal or circular bottom surface and gaps at multiple locations within one circumference, multiple times so that the soft magnetic ribbon protrudes out from the multiple gaps, or by tightly adhering the soft magnetic ribbon without adhesive around the inner mold and winding the soft magnetic ribbon around the outer mold multiple times so that the soft magnetic ribbon protrudes out from the multiple gaps, and then impregnating the soft magnetic ribbon with an adhesive to form a laminated thick film body, from which the protruding tip portions of the laminated thick film body are cut and crushed to form teeth portions, the portions of the laminated thick film body that are in close contact with the inner mold being formed into yoke portions, and the inner mold and the outer mold being removed.

[0016] The stator, which is one of the components of the motor according to the present invention, is characterized in that it is constructed by winding a ribbon-shaped soft magnetic thin strip, which is laminated in a single layer or multiple layers and coated with an adhesive, around a columnar mold whose bottom side is made up of multiple curved and multiple straight lines and whose side surfaces are made up of multiple curved and multiple flat surfaces, or by winding the ribbon-shaped soft magnetic thin strip and then impregnating it with an adhesive to form a laminated thick film, which is then cut at one or multiple points in the column side direction, to extract a magnetic component in which the yoke and teeth are integrated, and arranging multiple of the magnetic components.

[0017] The stator, which is one of the components of the motor according to the present invention, is characterized in that it is constructed by winding a ribbon-shaped soft magnetic thin strip, which is a single layer or multiple layers laminated and coated with adhesive, around a mold made of multiple rods arranged in parallel with the same height, or by winding the ribbon-shaped soft magnetic thin strip and then impregnating it with adhesive to form a laminated thick film, which is then cut at one or multiple locations in the parallel direction to extract magnetic components in which the yoke and teeth are integrated, and arranging multiple of the magnetic components.

[0018] A method for producing a stator, which is one of the components of a motor according to the present invention, includes arranging a plurality of guide plates of the same height in a columnar shape so that their cross sections form a common bottom surface and have gaps between them to form a circle as a whole, providing a position adjustment mechanism that can move the plurality of guide plates all at once in a radial direction starting from the center of the circle, using the plurality of guide plates whose positions have been adjusted by the position adjustment mechanism as a columnar mold, winding a ribbon-shaped soft magnetic thin strip that is laminated in a single layer or multiple layers and coated with adhesive around the columnar mold, or winding the ribbon-shaped soft magnetic thin strip and then impregnating it with adhesive to form a laminated thick film, cutting the laminated thick film at one or more locations in the column side direction, extracting magnetic components in which a yoke and teeth are integrated, and arranging a plurality of the magnetic components to form a stator. [Effects of the Invention]

[0019] According to the present invention, a motor stator is manufactured in a simple process from a laminated thick film body formed by winding an electromagnetic steel sheet, an amorphous alloy ribbon, a nanocrystalline alloy ribbon, or a composite soft magnetic ribbon of these. Compared to conventional manufacturing methods, this method improves productivity by simplifying the structure and reduces production costs by reducing the amount of waste of materials used. [Brief explanation of the drawings]

[0020] [Figure 1] FIG. 1 is a diagram showing a process for manufacturing a motor stator according to the first embodiment. [Figure 2] FIG. 2 is a diagram showing a process for manufacturing a motor stator according to the second embodiment. [Figure 3] FIG. 3 is a diagram showing a process for manufacturing a motor stator according to the third embodiment. [Figure 4] FIG. 4 is a diagram showing a process for manufacturing a motor stator according to the fourth embodiment. [Figure 5] FIG. 5 is a diagram showing a process for manufacturing a motor stator according to the fifth embodiment. [Figure 6] FIG. 6 is a diagram showing a mold for manufacturing a motor stator according to a sixth embodiment. [Figure 7] FIG. 7 is a diagram showing a process for manufacturing a motor stator according to the seventh embodiment. [Figure 8] FIG. 8 is a diagram showing a mold for manufacturing a motor stator according to an eighth embodiment. [Figure 9] FIG. 9 is a diagram showing a mold for carrying out a method for producing a motor stator according to a ninth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0021] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail by way of examples with reference to the accompanying drawings. [Example]

[0022] 1A and 1B are diagrams showing the process of manufacturing a motor stator 1 according to the first embodiment. (a) shows the bottom surface of a hexagonal prism mold 5. However, a polygonal tubular mold with a hollow center, like a cylinder in contrast to a column, may also be used, and the polygonal tubular mold 5 will be used throughout the present invention. The open angle between the left and right vertices of the hexagon in (a) is 60 degrees. A ribbon-shaped soft magnetic ribbon, which is a single layer or multiple layers coated with an adhesive, is wound around a hexagonal prism-shaped mold 5, or the ribbon-shaped soft magnetic ribbon is wound and then impregnated with an adhesive to form a laminated thick film body 6. As the soft magnetic ribbon, an electromagnetic steel sheet ribbon, an amorphous alloy ribbon, a nano-alloy ribbon, a composite soft magnetic ribbon, etc. can be used. When the laminated thick film body 6 is cut parallel to the side of the hexagonal pillar along the dotted line in (a) and the mold is removed, the laminated thick film body 6 can be separated into two magnetic components 4, which are then connected as shown in (b). Each magnetic component 4 is used with a yoke 2 in the center and teeth 3 integrated on both sides. The soft magnetic ribbon is wound around the mold in (a) and then cut repeatedly, and one of the magnetic components 4 thus taken out is further connected to (b), resulting in a configuration of three yokes 2 and three teeth 3 as shown in (c), and a winding 7 is applied to each tooth 3 to produce the stator 1 for the motor. [Example]

[0023] 2A and 2B are diagrams showing the steps of manufacturing a motor stator 1 according to Example 2. (a) shows the bottom surface of a hexagonal columnar mold 5. The open angle between the left and right vertices of the hexagon in (a) is 120 degrees. A ribbon-shaped soft magnetic thin strip, which is a single layer or a multi-layer laminate coated with adhesive, is wound around a hexagonal prism-shaped mold 5, or the ribbon-shaped soft magnetic thin strip is wound and then impregnated with adhesive to form a laminated thick film body 6. When the laminated thick film body 6 is cut parallel to the side of the hexagonal pillar along the dotted line in (a) and the mold 5 is removed, the laminated thick film body 6 can be separated into two magnetic components 4, which are then connected as shown in (b). Each magnetic component 4 is used with a yoke 2 in the center and teeth 3 integrated on both sides. The soft magnetic ribbon is wound around the mold 5 in (a) and then cut three times, and the extracted magnetic component 4 is further connected to (b), resulting in a configuration of six yokes 2 and six teeth 3 as shown in (c), and a winding 7 is applied to each tooth 3 to complete the motor stator 1. [Example]

[0024] FIG. 3 illustrates the process for fabricating a motor stator 1 according to a third embodiment. (a) shows the bottom of a columnar mold 5, which is a triangular prism with an equilateral triangular base and three plates attached to the vertices of the triangle. A single-layer or multi-layered ribbon-shaped soft magnetic thin strip coated with adhesive is wound around the mold 5, or the ribbon-shaped soft magnetic thin strip is wound and then impregnated with adhesive to form a laminated thick film body 6. When the mold 5 is removed, only the laminated thick film body 6 shown in (b) remains. Cutting the three end portions of (b) results in three magnetic components 4, each consisting of a yoke 2 and teeth 3 integrated at both ends, as shown in (c). The teeth 3 in (c) are pressed together so that they come into contact with each other, resulting in a configuration consisting of three yokes 2 and three teeth 3, as shown in (d). A winding 7 is wound around each tooth 3 to fabricate the motor stator 1. All of the motor stators 1 fabricated according to the first to third embodiments are used as inner stators. [Example]

[0025] 4A and 4B are diagrams illustrating the process of manufacturing a motor stator 1 according to a fourth embodiment. (a) shows the shape of the bottom surface of a polygonal pillar used as a mold 5. While (a) and (b) of FIG. 1 are called convex polygons, (a) of FIG. 4 is sometimes called a non-convex polygon, but both are types of polygons. A single layer or multiple layers of ribbon-shaped soft magnetic thin strip coated with adhesive are wound around a polygonal pillar-shaped mold 5 having a bottom shape of (a), or the ribbon-shaped soft magnetic thin strip is wound and then impregnated with adhesive to form a laminated thick film body 6. When the polygonal pillar is cut along the dotted line in (a) toward the side surface and the mold 5 is removed, two magnetic components 4 having the shape of (b) are taken out. This is used as a magnetic part 4 with teeth 3 integrated on both sides of a yoke 2. The soft magnetic ribbon is wound around the mold 5 in (a) and then cut, and this process is repeated three times. The magnetic parts 4 that are taken out are connected one after another to (b), resulting in a configuration of six yokes 2 and six teeth 3 as shown in (c), and a winding 7 is applied to each tooth 3 to complete the motor stator 1. This is used as an outer stator. [Example]

[0026] FIG. 5 is a diagram illustrating a process for fabricating a motor stator 1 according to a fifth embodiment. As shown in FIG. 5(a), the inner die 8 is a triangular prism with an equilateral triangular base, and three plates are arranged parallel to the sides of the triangular prism to form the outer die 9. The outer die 9 has three gaps 10 around its circumference. A ribbon-shaped soft magnetic ribbon, either single-layer or multi-layer laminated and coated with adhesive, is tightly attached around the inner die 8 and then wound around the outer die 9 over multiple turns so that the soft magnetic ribbon protrudes from the gaps 10. Alternatively, a soft magnetic ribbon without adhesive is tightly attached around the inner die 8 and then wound around the outer die 9 over multiple turns so that the soft magnetic ribbon protrudes from the gaps 10. The laminated thick film body 6 shown in FIG. 5(b) is then impregnated with adhesive to form the laminated thick film body 6. The protruding ends are cut off and crushed to form the teeth 3. The portions that are in contact with the inner die 8 form the yoke 2. When the inner mold 8 and outer mold 9 are removed, the motor stator 1 is completed by forming a structure consisting of three yokes 2 and three teeth 3 as shown in (c). [Example]

[0027] FIG. 6 is a diagram showing a mold for fabricating a motor stator 1 according to a sixth embodiment. This is a top view of a toroidal core case, with four cuts made on the outer periphery to create gaps 10. The inner periphery serves as the inner mold 8, and the outer periphery with the four gaps 10 serves as the outer mold 9. A ribbon-shaped soft magnetic ribbon, either single-layer or multi-layer laminated and coated with adhesive, is tightly attached around the inner mold 8, and then wound around the inner mold 8 over multiple turns so that the soft magnetic ribbon protrudes from the gaps 10 in the outer mold 9. Alternatively, a soft magnetic ribbon without adhesive is tightly attached around the inner mold 8, and then wound around the outer mold 8 over multiple turns so that the soft magnetic ribbon protrudes from the gaps 10 in the outer mold 9. The laminated thick film body 6 is then impregnated with adhesive. The tips protruding from the gaps 10 are cut off and crushed to form teeth 3. The portions in contact with the inner mold 8 serve as yokes 2. When the inner mold 8 and outer mold 9 are removed, four yokes 2 and four teeth 3 are left, and a winding 7 is wound around each tooth 3 to produce the stator 1 for the motor. [Example]

[0028] FIG. 7 illustrates the process for fabricating a motor stator 1 according to Example 7. A columnar mold 5 with the bottom shape shown in (a) is used. The columnar mold 5 has sides consisting of multiple curved and multiple straight lines, and side surfaces consisting of multiple curved and multiple flat surfaces. A single-layer or multiple-layer laminated ribbon-shaped soft magnetic ribbon coated with adhesive is wound around the columnar mold 5, or a ribbon-shaped soft magnetic ribbon is wound around the columnar mold 5 and then impregnated with adhesive to form a laminated thick film body 6. The laminated thick film body 6 is then cut along the dotted line in (a) toward the columnar side. The columnar mold 5 is then removed, and the laminated thick film body 6 can be separated into two magnetic components 4, which are then connected as shown in (b). Each magnetic component 4 has a yoke 2 in the center and teeth 3 on both sides. The process of winding a soft magnetic ribbon around the columnar mold 5 shown in (a) and then cutting it is repeated. One of the magnetic components 4 thus extracted is then connected to (b), resulting in a configuration consisting of three yokes 2 and three teeth 3, as shown in (c). A winding 7 is applied to each tooth, completing the motor stator 1. [Example]

[0029] FIG. 8 is a diagram showing the bottom shape of a mold 5 used to fabricate a motor stator according to Example 8. The mold 5 is composed of six rods 11 arranged parallel to each other and with the same height. A single-layer or multi-layered ribbon-shaped soft magnetic ribbon coated with adhesive is wound around the mold 5, or the ribbon-shaped soft magnetic ribbon is wound and then impregnated with adhesive to form a laminated thick film body 6. The laminated thick film body 6 is then cut parallel to the dotted lines in FIG. 8 and the mold 5 is removed. The laminated thick film body 6 can be separated into two magnetic components 4, which are then connected in a configuration similar to that shown in FIG. 2(b). Each magnetic component 4 is used with a yoke 2 in the center and teeth 3 on both sides. The process of winding and cutting the soft magnetic ribbon around the mold 5 shown in FIG. 8 is repeated three times. The magnetic components 4 thus obtained are then connected in a configuration similar to that shown in FIG. 2(b). This results in a configuration consisting of six yokes 2 and six teeth 3, similar to that shown in FIG. 2(c). A winding 7 is applied to each tooth to form the motor stator 1. [Example]

[0030] FIG. 9 is a diagram showing the shape of the bottom surface of a mold 5 for carrying out a method for producing a motor stator 1 according to a ninth embodiment. The mold 5 is made up of six guide plates 12 of the same height, arranged parallel to each other with gaps 10 between them to form a circle. A position adjustment mechanism is provided that can simultaneously move the six guide plates 12 in the radial direction, starting from the center of the circle, in the direction of the arrows in Figure 9. The six guide plates 12 with their positions adjusted are used as the columnar mold 5. The position adjustment mechanism can be hydraulic, water, or air pressure. A single-layer or multi-layered ribbon-shaped soft magnetic strip coated with adhesive is wound around the columnar mold 5, or the ribbon-shaped soft magnetic strip is wound and then impregnated with adhesive to form a laminated thick film body 6. The laminated thick film body 6 is then cut along the dotted line in Figure 9 toward the columnar side. The mold 5 is then removed, allowing the laminated thick film body 6 to be separated into two magnetic components 4, which are then connected in a shape similar to Figure 2(b). Each magnetic component 4 has a yoke 2 in the center and teeth 3 integrated on both sides. 9 is wound around the die 5 and then cut, and this process is repeated three times, and the extracted magnetic component 4 is further connected in a shape similar to that shown in Fig. 2(b), resulting in a configuration consisting of six yokes 2 and six teeth 3 similar to that shown in Fig. 2(c), and a winding 7 is applied to each tooth to produce the motor stator 1. The method for producing a motor stator according to this embodiment is a flexible manufacturing method, and enables the production of a wide variety of products in response to user requests. [Industrial Applicability]

[0031] According to the present invention, a stator for a motor can be manufactured by cutting and processing a laminated thick film body formed by winding a soft magnetic ribbon, which reduces the number of manufacturing steps and significantly reduces material waste compared to the conventional method of manufacturing a stator by punching out, assembling, and laminating each piece. This has great industrial applicability, as it enables the use of motors and generators that are more productive, lower cost, and more energy efficient than conventional methods. [Explanation of symbols]

[0032] 1 Motor stator 2 York 3 Teeth 4 Magnetic parts Type 5 6 Laminated thick film 7 windings 8 Internal type 9 Foreign Types 10. Gap 11 Rod-shaped 12 Guide plate

Claims

1. A stator is one of the components of a motor, characterized in that the stator is constructed by winding a ribbon-shaped soft magnetic thin strip, which is a single layer or multiple layers laminated and coated with adhesive, around a polygonal pillar-shaped mold having a polygonal bottom, or by winding the ribbon-shaped soft magnetic thin strip and then impregnating it with adhesive to form a laminated thick film, which is then cut at one or multiple points in the pillar side direction to extract a magnetic component in which the yoke and teeth are integrated, and arranging multiple of the magnetic components.

2. A stator is one of the components of a motor, the stator being constructed by tightly adhering a ribbon-shaped soft magnetic ribbon, made of a single layer or multiple layers laminated and coated with an adhesive, around a cylindrical internal mold having a polygonal or circular bottom surface, and winding the soft magnetic ribbon around a cylindrical external mold having a polygonal or circular bottom surface and gaps at multiple locations within one circumference, the soft magnetic ribbon over multiple circumferences so that the soft magnetic ribbon protrudes out from the multiple gaps, or by adhering the soft magnetic ribbon without adhesive around the internal mold and winding the soft magnetic ribbon over multiple circumferences so that the soft magnetic ribbon protrudes out from the multiple gaps in the external mold, and then impregnating the soft magnetic ribbon with an adhesive, from which a laminated thick film body is formed, the protruding tip portions of the laminated thick film body are cut and crushed to form teeth portions, the portions of the laminated thick film body that are in close contact with the internal mold are formed to form yoke portions, and the internal mold and the external mold are removed.

3. A stator is one of the components of a motor, characterized in that it is constructed by winding a ribbon-shaped soft magnetic thin strip, which is laminated in a single layer or multiple layers and coated with an adhesive, around a columnar shape whose bottom side is made up of multiple curved and multiple straight lines and whose side surfaces are made up of multiple curved and multiple flat surfaces, or by winding the ribbon-shaped soft magnetic thin strip and then impregnating it with an adhesive to form a laminated thick film, which is cut at one or multiple points in the column side direction, to extract a magnetic component in which a yoke and teeth are integrated, and arranging multiple of the magnetic components.

4. A stator is one of the components of a motor, characterized in that it is constructed by winding a ribbon-shaped soft magnetic thin strip, which is a single layer or multiple layers laminated and coated with adhesive, around a mold made of multiple rods arranged in parallel with the same height, or by winding the ribbon-shaped soft magnetic thin strip and then impregnating it with adhesive to form a laminated thick film body, which is then cut at one or multiple places in the parallel direction to extract a magnetic component in which a yoke and teeth are integrated, and arranging multiple of the magnetic components.

5. a position adjustment mechanism that can move the plurality of guide plates simultaneously in a radial direction starting from the center of the circumference; the plurality of guide plates whose positions have been adjusted by the position adjustment mechanism are used as a columnar mold; a ribbon-shaped soft magnetic thin strip, which is a single layer or multiple layers laminated and coated with an adhesive, is wound around the columnar mold; or the ribbon-shaped soft magnetic thin strip is wound and then impregnated with an adhesive to form a laminated thick film body, which is cut at one or more points in the column side direction; magnetic components in which a yoke and teeth are integrated are extracted; and a plurality of the magnetic components are arranged to form a stator.

6. 5. The motor stator according to claim 1, wherein when a plurality of magnetic components in which the yoke and teeth are integrated are arranged, the plurality of magnetic components are arranged connected to each other.

7. The method for manufacturing a motor stator according to claim 5, characterized in that when arranging multiple magnetic components in which the yoke and teeth are integrated, the multiple magnetic components are connected to each other and arranged.

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