WO2024075549A1 - 回転電機の固定子、回転電機および回転電機の固定子の製造方法 - Google Patents

回転電機の固定子、回転電機および回転電機の固定子の製造方法 Download PDF

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Publication number
WO2024075549A1
WO2024075549A1 PCT/JP2023/034511 JP2023034511W WO2024075549A1 WO 2024075549 A1 WO2024075549 A1 WO 2024075549A1 JP 2023034511 W JP2023034511 W JP 2023034511W WO 2024075549 A1 WO2024075549 A1 WO 2024075549A1
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WIPO (PCT)
Prior art keywords
tenon
core
stator
groove
split
Prior art date
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Ceased
Application number
PCT/JP2023/034511
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English (en)
French (fr)
Japanese (ja)
Inventor
和明 廣田
修一 北野
雄哉 横手
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2024555717A priority Critical patent/JP7814543B2/ja
Priority to CN202380065290.5A priority patent/CN119923782A/zh
Publication of WO2024075549A1 publication Critical patent/WO2024075549A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies

Definitions

  • This disclosure relates to a stator for a rotating electric machine, a rotating electric machine, and a method for manufacturing a stator for a rotating electric machine.
  • Patent Document 1 discloses the following stator structure.
  • the split cores each having a back yoke portion connected in a circular shape and teeth portions protruding radially from the back yoke portion are (1)
  • a first core blank having a first protrusion on one of the left and right connection surfaces of the back yoke portion and a first recess into which the first protrusion can be inserted from the stacking direction on the other of the left and right connection surfaces is stacked in a predetermined number to form one set
  • a predetermined number of second core blanks are stacked together to form one set, each of which has a second protrusion on one of the left and right connecting surfaces of the back yoke portion that can be inserted into the first recess of the first core blank from the stacking direction and the circumferential direction, and a second recess on the other of the left and right connecting surfaces into which both the first protrusion and the second pro
  • the second convex portion when combining the split cores, the second convex portion is first fitted into the first concave portion, and the second concave portion is fitted into the first convex portion or the second convex portion from the circumferential direction. At this time, if the radial positional relationship between each concave portion and convex portion is not adjusted, the concave portion and the convex portion will not fit together, making assembly impossible.
  • This disclosure has been made to solve the problems described above, and aims to provide a stator for a rotating electrical machine that eliminates the need for multiple positioning steps when combining adjacent core segments, thereby reducing processing costs.
  • the stator of the rotating electric machine disclosed herein is configured by arranging a plurality of split cores in a circular shape, each split core being made up of a back yoke portion shaped like a ring divided in the circumferential direction and teeth protruding from the back yoke portion, and has joint surfaces formed on both side ends of the back yoke portion and joining adjacent split cores, the joint surfaces having at least a first groove portion, a first convex portion, and a first tenon portion formed in the height direction of one joint surface, and a second joint surface having a second tenon portion, a first concave portion, and a second groove portion formed in the height direction of the other joint surface, and the first The groove engages with the second tenon of the adjacent split core, the first convex contacts with the first concave of the adjacent split core, the first tenon engages with the second groove of the adjacent split core, the first and second tenon are configured to be insertable into the first and second grooves only from the height
  • radial and circumferential positioning is performed by contacting the first convex portion with the first concave portion, eliminating the need for multiple positioning steps and reducing processing costs.
  • FIG. 2 is a perspective view showing a split core according to the first embodiment.
  • FIG. 2 is a perspective view of a stator according to the first embodiment.
  • 1 is a perspective view of a rotating electric machine in which a stator and a rotor according to a first embodiment are combined;
  • 5 is an explanatory diagram of side surfaces where the split cores according to the first embodiment come into contact with each other.
  • FIG. 5A to 5C are diagrams illustrating the assembly of a stator using split cores according to the first embodiment. This is a cross-sectional view taken along line AA in FIG. 5. This is a cross-sectional view taken along line B-B of FIG. 5. This is a cross-sectional view taken along the line CC of FIG. 5.
  • FIG. 11 is a perspective view showing a split core according to a second embodiment.
  • 11A to 11C are diagrams illustrating the assembly of a stator using split cores according to the second embodiment.
  • 11A to 11C are diagrams illustrating the assembly of a stator using split cores according to the second embodiment.
  • FIG. 11 is a perspective view showing a split core according to a third embodiment.
  • FIG. 11 is a plan view of a core segment according to a third embodiment.
  • FIG. 13 is a perspective view showing a split core according to a fourth embodiment.
  • FIG. 13 is a plan view of a split core according to a fourth embodiment.
  • FIG. 13 is a perspective view showing a split core according to a fifth embodiment.
  • FIG. 13 is a perspective view showing a coupling core according to a sixth embodiment.
  • FIG. 13 is a perspective view showing a coupling core according to a sixth embodiment.
  • 13A to 13C are diagrams illustrating the assembly of a stator using linked cores in accordance with embodiment 7.
  • 13A to 13C are diagrams illustrating the assembly of a stator using linked cores in accordance with embodiment 7.
  • Fig. 1 is a perspective view showing a core segment 1a constituting a stator according to embodiment 1.
  • Fig. 2 is a perspective view of a stator 2 formed by combining a plurality of core segments 1a according to embodiment 1 in an annular shape.
  • Fig. 3 is a perspective view showing a rotating electric machine 2B in which the stator 2 and a rotor 2A are combined.
  • the split core 1a is constructed by cutting electromagnetic steel sheets into a predetermined shape using a press, wire processing machine, laser processing machine, or the like, and then stacking multiple cut electromagnetic steel sheets in order to a predetermined height.
  • the surface that corresponds to the circular surface of the stator 2 in Figure 2 and that is visible in Figures 1 and 2 is defined as the top surface of the split core 1a, the surface opposite the top surface that is not visible in Figures 1 and 2 is defined as the bottom surface of the split core 1a, and the surface on which the electromagnetic steel sheets are stacked in stripes is defined as the side surface.
  • the split core 1a is divided into a back yoke portion 3 on the outer diameter side of the stator 2, and a teeth portion 4 on the inner diameter side.
  • the back yoke section 3 is the area that forms a ring shape when multiple core segments 1a are combined, and has a shape that divides the ring equally in the circumferential direction. There are two sides at both ends in the circumferential direction where the core segments 1a come into contact with each other, and each has a different shape. The shape of these ends will be explained in detail.
  • one end 5a1 has three different shapes formed, which, from the top side, are a dovetail groove portion (hereinafter groove portion) 6a1, a L-shaped protrusion portion (hereinafter protrusion portion) 7a1, and a dovetail tenon portion (hereinafter tenon portion) 8a1.
  • the shapes are adjacent to each other in the stacking direction (also called the height direction, the same applies below), and in terms of size in the stacking direction, the protrusion portion 7a1 is the largest, and the groove portion 6a1 and tenon portion 8a1 are the same size in the stacking direction, and are formed to be one size smaller than the protrusion portion 7a1.
  • the groove portion 6a1 is recessed in a trapezoidal shape in the circumferential direction of one end 5a1, and the shape becomes smaller in the circumferential direction as it approaches the end.
  • the radial gap is smallest at the open end of the groove, and conversely, the bottom of the groove, which corresponds to the lower side of the recessed trapezoid, is configured as a dovetail shape where the radial gap is largest.
  • the protrusion 7a1 has a triangular shape that protrudes in the circumferential direction, and the shape is configured so that the radial size becomes smaller as it approaches the end in the circumferential direction.
  • the tenon portion 8a1 is a trapezoid that protrudes in the circumferential direction of one end 5a1, and is configured in a dovetail shape such that the radial size of the portion of the circumferential end that corresponds to the bottom side of the protruding trapezoid is the largest, and the radial size of the base portion on the opposite side to the end that corresponds to the top side of the protruding trapezoid is the smallest.
  • the other end 5a2 shown on the right side of Figure 1 also has three different shapes, which from the top are a dovetail portion (hereafter tenon portion) 8a2, a V-shaped recess (hereafter recess) 7a2, and a dovetail groove portion (hereafter groove portion) 6a2.
  • the shapes are adjacent to each other in the stacking direction, and the recess 7a2 is the largest in size in the stacking direction, while the tenon portion 8a2 and the groove portion 6a2 are the same size in the stacking direction and are formed to be one size smaller than the recess 7a2.
  • the sizes of the groove portion 6a1 and the tenon portion 8a2, the convex portion 7a1 and the concave portion 7a2, and the tenon portion 8a1 and the groove portion 6a2 in the stacking direction are all configured to be the same. Note that there may be gaps between the groove portion 6a1 and the convex portion 7a1, and between the convex portion 7a1 and the tenon portion 8a1.
  • the groove portion 6a1 and the groove portion 6a2 have the same shape, and the tenon portion 8a1 and the tenon portion 8a2 also have the same shape, so a description will be omitted.
  • the recess 7a2 has a triangular recessed shape in the circumferential direction, and its shape is configured so that the radial gap becomes smaller as it approaches the bottom of the recess.
  • the circumferential recessed shape of the grooves 6a1, 6a2 matches the circumferential protruding shape of the tenon portions 8a1, 8a2, and is configured so that there is no gap when the grooves 6a1, 6a2 and the tenon portions 8a2, 8a1 are combined.
  • the shape of the grooves 6a1 and 6a2 is configured so that the radial gap becomes smaller in the circumferential direction as one approaches the opening end of the groove, and conversely, the radial gap becomes larger as one approaches the bottom of the groove. Furthermore, the shape of the tenons 8a1 and 8a2 is configured so that the radial size becomes larger in the circumferential direction as one approaches the tip of the tenon, and conversely, the radial size becomes smaller as one approaches the base of the tenon.
  • the only way they can be combined is if the tenons 8a2, 8a1 are inserted into the grooves 6a1, 6a2 from the stacking direction.
  • the triangular shape of the convex portion 7a1 that protrudes in the circumferential direction matches the triangular shape of the concave portion 7a2 that is recessed in the circumferential direction, and they are configured so that there is no gap when the convex portion 7a1 and the concave portion 7a2 are combined. However, there may be a gap as long as the magnetic resistance is not too large.
  • the recess 7a2 can be combined with the protruding portion 7a1 in either the circumferential direction or the stacking direction.
  • the protruding portions of the tenons 8a1 and 8a2 are larger than the protruding portion of the protruding portion 7a1 in both the radial and circumferential directions. Details are explained using FIG. 4.
  • FIG. 4 is a top view of the tenons 8a1 and 8a2 with the protruding portion 7a1 superimposed thereon.
  • the area of the protruding portion 7a1 is clearly indicated by diagonal lines.
  • the area of the diagonal lines indicating the protruding portion 7a1 is entirely contained within the area of the tenons 8a1 and 8a2. In this way, the protruding portions of the tenons 8a1 and 8a2 are not only simply larger than the protruding portion 7a1, but are also configured to include the protruding portion 7a1.
  • the teeth portion 4 shown in FIG. 1 is a portion that extends from near the circumferential center of the back yoke portion 3 toward the inner diameter direction of the stator 2.
  • the side surface on the inner diameter side is arc-shaped, and both circumferential side surfaces are configured to be parallel to each other.
  • shoes 10 are provided on both sides that protrude in the circumferential direction from the parallel surfaces. The size of the shoes 10 is set so that when the split cores 1a are combined, there is a gap between the shoes 10 of adjacent split cores 1a.
  • the split core 1a is formed by stacking three different types of electromagnetic steel sheets.
  • the first type is a first electromagnetic steel sheet having a groove portion 6a1 and a tenon portion 8a2
  • the second type is a second electromagnetic steel sheet having a protrusion portion 7a1 and a recess portion 7a2
  • the third type is a third electromagnetic steel sheet having a tenon portion 8a1 and a groove portion 6a2.
  • These are stacked in order to reach the required height in the stacking direction.
  • three types of punching dies used in the press are required for the three types of electromagnetic steel sheets.
  • the first electromagnetic steel sheet having the groove portion 6a1 and the tenon portion 8a2 and the third electromagnetic steel sheet having the tenon portion 8a1 and the groove portion 6a2 are in a line-symmetrical relationship, so that the third electromagnetic steel sheet can be substituted by inverting the first electromagnetic steel sheet.
  • only two types of punching dies are required, which reduces processing costs.
  • FIG. 5 is a diagram showing the state in which the core segments 1b and 1c are pressed against each other in the circumferential direction with the core segments 1b and 1c shifted in the lamination direction.
  • the core segments 1b and 1c have the same shape as the core segment 1a, but for ease of explanation, they will be described as core segments 1b and 1c.
  • Figs. 6 to 10 are cross-sectional views of the sections A-A to E-E shown in Fig. 5.
  • One end 5b1 of the core segment 1b and one end 5c2 of the core segment 1c are brought into contact with each other in the circumferential direction with the segments shifted in the lamination direction.
  • the direction and amount of shifting must satisfy the following conditions (1) to (3).
  • (1) As shown in the cross section taken along the line BB in FIG. 7, the grooves 6b1 of the core split 1b come into contact with the recesses 7c2 of the core split 1c.
  • the convex portion 7b1 of the split core 1b comes into contact with the concave portion 7c2 and the groove portion 6c2 of the split core 1c.
  • the convex portion 7b1 of the split core 1b and the concave portion 7c2 of the split core 1c come into contact when they are first pressed against each other in the circumferential direction while shifted in the lamination direction, so even if the positional relationship between the split cores 1b and 1c is shifted in the radial direction, a component force is generated in the convex portion 7b1 and the concave portion 7c2 from the pressing force in a direction that eliminates the radial shift, so they can be positioned relative to each other in the radial direction without an additional positioning process.
  • the groove 6b1 and tenon 8c2, the protrusion 7b1 and recess 7c2, and the tenon 8b1 and groove 6c2 are joined together without any gaps, so there are no gaps at the joints, which prevents an increase in magnetic resistance and suppresses a decrease in the efficiency of the rotating electric machine.
  • FIG. 11 is a perspective view showing a split core 1d according to the second embodiment
  • FIGS. 12 and 13 are schematic diagrams showing a state where a plurality of split cores 1d are combined in an annular shape.
  • Split core 1d differs from split core 1a in the arrangement of three different shapes at both ends.
  • One end 5d1 of split core 1d has, from the top surface, a dovetail groove portion (hereinafter groove portion) 6d1, a V-shaped protrusion portion (hereinafter protrusion portion) 7d1, and a dovetail portion (hereinafter tenon portion) 8d1, while the opposite end 5d2 has, from the top surface, a dovetail groove portion (hereinafter groove portion) 6d2, a V-shaped recess portion (hereinafter recess portion) 7d2, and a dovetail portion (hereinafter tenon portion) 8d2.
  • a stator can be assembled by combining split core 1d with split core 1e, which has a structure opposite to that of split core 1d.
  • the groove 6d1 and tenon 8d1 at one end 5d1 of the split core 1d are switched, and from the top surface of the end 5e1, the tenon 8e1, the convex 7e1, and the groove 6e1 are configured in this order.
  • the groove 6d2 and tenon 8d2 at the opposite end 5d2 are switched, and from the top surface of the end 5e2, the tenon 8e2, the concave 7e2, and the groove 8e1 are configured in this order.
  • stator can be assembled without interference by alternating between split cores 1d and 1e as shown in Figure 12. Also, if the stator is made up of an odd number of split cores, the stator can be assembled smoothly without the split cores interfering with each other during assembly by incorporating only one split core 1a in embodiment 1 as shown in Figure 13 and combining the rest with split cores 1d and 1e in embodiment 2 in the same way as when there is an even number of split cores.
  • FIG. 14 is a perspective view showing a split core 1f according to the third embodiment
  • FIG. 15 is a plan view showing a split core 1f according to the third embodiment.
  • the components include a dogleg-shaped convex portion and a dogleg-shaped concave portion, but the components are not limited to a dogleg-shaped convex portion and may have any shape as long as a component force is generated in a direction that reduces the radial deviation between the split cores at the contact portion when the split cores are pressed against each other.
  • a circular convex portion 11 and a circular concave portion 12 may be used. With this shape, a component force is generated in a direction that reduces the radial deviation between the split cores at the contact portion when the split cores are pressed against each other.
  • FIG. 16 is a perspective view showing a split core 1g according to the fourth embodiment
  • FIG. 17 is a plan view showing a split core 1g according to the fourth embodiment.
  • the components include a dovetail groove portion and a dovetail portion, but the components are not limited to this and may have any shape as long as they are larger than the L-shaped convex portion and the circular convex portion, cannot be assembled or disassembled in the circumferential direction, and can be assembled in the stacking direction.
  • the hook convex portion 13 and the hook concave portion 14 may extend in the circumferential direction and bend toward the radial inner side halfway. With such a shape, the components can be configured to be larger than the L-shaped convex portion and the circular convex portion, cannot be assembled or disassembled in the circumferential direction, and can be assembled in the stacking direction.
  • FIG. 18 is a perspective view showing a core segment 1h according to the fifth embodiment.
  • one end 5h1 of the split core 1h may have, in order from the top surface, a dovetail groove portion (hereinafter, groove portion) 6h1, a dogleg recess (hereinafter, recess) 9h1, a dogleg protrusion (hereinafter, protrusion) 7h1, and a dovetail portion (hereinafter, tenon portion) 8h1
  • the other end 5h2 may have, in order from the top surface, a dovetail portion (hereinafter, tenon portion) 8h2, a dogleg protrusion (hereinafter, protrusion) 7h2, a dogleg recess (hereinafter, recess) 9h2, and a dovetail groove portion (hereinafter, groove portion) 6h2.
  • the protrusions 7h1 and 7h2 interfere with each other in the axial direction when they are moved in the opposite direction to the direction in which they were shifted in the stacking direction, the axial anti-pullout strength of the recess 9h1 and the tenon portion 8h2, and the recess 9h2 and the tenon portion 8h1 can be further strengthened.
  • the embodiments 1 to 5 described so far can be freely combined, and any combination that does not generate gaps at the joints between the split cores while satisfying the conditions described in each embodiment is acceptable. However, as described above, there may be gaps at the joints as long as the increase in magnetic resistance is within an acceptable range.
  • the combined split core has an axisymmetric structure, so there is no need to prepare split cores with opposite sides, such as split core 1e for split core 1d in the second embodiment, resulting in the unique effect of being able to reduce the number of types of split cores.
  • FIG. 19 is a perspective view showing a coupling core 1i according to the sixth embodiment.
  • the connection of each core segment described in the first to fifth embodiments can also be used when connecting only both ends of a linked core having multiple teeth connected together.
  • the linked core 1i in Fig. 19 is connected by applying the structure of any one of the first to fifth embodiments to only one circumferentially located split portion 15a. The remaining connected portions of the cores are connected by rotating portions 17.
  • one end of the divided part 15a is formed with three different shapes, which are, from the top side, a groove part, a convex part, and a tenon part.
  • the other end of the divided part 15a is formed with three different shapes, which are, from the top side, a tenon part, a concave part, and a groove part.
  • the respective shapes are adjacent to each other in the stacking direction, and the size in the stacking direction of the convex part and the concave part is the largest, while the size in the stacking direction of the groove part and the tenon part is the same, and the shapes are formed to be one size smaller than the convex part and the concave part.
  • connection is made by a rotating portion 17 as in this embodiment, for example by a thin-walled portion 16 as shown in FIG. 20, or by a member other than the iron core, such as an insulating member, it is also possible to connect the divided portion 15b by applying embodiments 1 to 5.
  • the connecting core when the connecting core is deformed and displaced in the axial direction before being twisted in, the amount of axial displacement differs between the rotating connecting core shown in FIG. 19 and the thin-walled connecting core shown in FIG. 20 due to differences in connection structure.
  • the thin-walled connecting core shown in FIG. 20 has no backlash because it is connected by the core material, and must be elastically deformed to be displaced.
  • the rotating connecting core in FIG. 19 connects adjacent teeth with an uneven shape, so it is possible to displace the amount of backlash in the uneven parts and it is easier to twist in than the thin-walled connecting core.
  • Embodiment 7. 21 and 22 are diagrams for explaining the assembly of a stator by combining a plurality of block-shaped connecting cores in an annular shape.
  • FIG. 21 shows the case where a block-shaped connecting core 1k for three teeth is combined and assembled.
  • the arrangement of shapes formed at one end of the block-shaped connecting core 1k is different from the arrangement of the connecting cores 1i and 1j. That is, as described above, one end of the divided parts of the connecting cores 1i and 1j is formed with a groove, a protrusion, and a tenon from the top side, as in FIG. 1 of the first embodiment, for example, and the other end of the divided parts is formed with a tenon, a recess, and a groove from the top side.
  • one end of the block-shaped connecting core 1k is formed with a groove, a protrusion, and a tenon from the top side, and the other end is formed with a groove, a recess, and a tenon from the top side.
  • the shapes are adjacent to each other in the stacking direction, and the size in the stacking direction of the convex and concave parts is the largest, while the size in the stacking direction of the groove and tenon parts is the same, and the shapes are formed to be one size smaller than the convex and concave parts.
  • the three teeth that make up the block-shaped connecting core 1k are connected by rotation or thin-walled connections, as in Figures 19 and 20.
  • every other block-shaped connecting core 1k can be assembled upside down as shown in Figure 21, so that they can be combined without interference.
  • interference will occur, so as explained in embodiment 2, by incorporating only one block-shaped connecting core 1m with a structure that is the opposite of the block-shaped connecting core 1k as shown in Figure 22, the stator can be assembled without the twisted fit explained in embodiment 6.
  • the stator is configured by arranging a plurality of split cores in an annular shape, the split cores being made up of a back yoke portion shaped like a ring divided in the circumferential direction and teeth protruding from the back yoke portion, the back yoke portion having joint surfaces formed at both end portions thereof and joining adjacent split cores, the joint surfaces having a first joint portion in which at least a first groove portion, a first convex portion, and a first tenon portion are formed in the height direction of one joint surface, and a second joint portion in which a second groove portion, a first concave portion, and a second tenon portion are formed in the height direction of the other joint surface, the first groove portion and the second tenon portion of the adjacent core split are engaged with each other, the first protrusion portion and the first recess portion of the adjacent core split are in contact with each other without any gap, and the first tenon portion and the second
  • (Appendix 2) A stator for a rotating electric machine as described in Appendix 1, characterized in that the first joint has a second recess that is continuous with the first convex portion in the height direction, the second joint has a second convex portion that is continuous with the first recess in the height direction, and the second recess of the split core and the second convex portion of the adjacent split core are in contact with each other without any gaps.
  • (Appendix 3) The stator of a rotating electric machine according to claim 1, wherein the first groove and the second groove are provided at ends of the core segments on opposite sides in a height direction. (Appendix 4) 3.
  • (Appendix 7) A stator for a rotating electric machine as described in any one of appendix 1 to 5, characterized in that the first and second groove portions are formed in a hook shape with respect to the circumferential direction, and the first and second tenon portions are also formed in a hook shape.
  • (Appendix 8) The stator of a rotating electric machine according to any one of claims 1 to 7, characterized in that the first convex portion protrudes in a triangular shape with respect to the circumferential direction, and the first concave portion is recessed in a triangular shape with the circumferential end portion as a base.
  • the stator of a rotating electric machine is configured by arranging a plurality of split cores in an annular shape, the split cores being made of a back yoke portion shaped like a ring divided in the circumferential direction and teeth protruding from the back yoke portion, the stator has a first joint portion formed at an end of the back yoke portion of a first split core, the first joint portion having at least a first groove portion, a first convex portion, and a first tenon portion formed in the height direction of a joint surface that joins with an adjacent second split core, the second joint portion having a second groove portion, a first concave portion, and a second tenon portion formed on a joint surface facing the first joint portion of the second split core, the first groove portion and the second tenon portion engage with each other, the first convex portion and the first concave portion are in contact with each other without any gaps, and the first tenon portion and the second groove portion engage with each other,
  • a rotating electric machine comprising: a rotating electric machine stator according to any one of claims 1 to 10; and a rotor rotatably disposed opposite the stator with a gap therebetween.
  • (Appendix 12) In a manufacturing method for a stator for a rotating electric machine, in which split cores each consisting of a back yoke portion shaped like a ring divided in the circumferential direction and teeth protruding from the back yoke portion are arranged in an annular shape, the back yoke portion is formed at both end portions of the back yoke portion, and of joint surfaces which join adjacent split cores, a first joint portion is formed with at least a first groove portion, a first convex portion, and a first tenon portion in the height direction of one joint surface, and a second joint portion is formed with a second tenon portion, a first concave portion, and a second groove portion in the height direction of the other joint surface, and adjacent first and second split cores are
  • a first core segment and a second core segment are joined together by shifting the first core segment and the second core segment in the height direction, bringing the first convex portion of the first core segment and the second concave portion of the second core segment close to each other in the circumferential direction and bringing them into contact with each other, and then sliding one or both of the second concave portion and the first convex portion in the height direction to engage the first groove portion of the first core segment and the second tenon portion of the second core segment, and engaging the first tenon portion of the first core segment and the second groove portion of the second core segment.
  • 1a-1h split core, 1i, 1j, 1k, 1m: connecting core
  • 2 stator
  • 2A rotor
  • 2B rotating motor
  • 3 back yoke
  • 4 teeth
  • 11 circular convex
  • 12 circular concave
  • 13 hook convex
  • 14 hook concave
  • 15a, 15b split
  • 16 thin wall
  • 17 rotating part.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
PCT/JP2023/034511 2022-10-07 2023-09-22 回転電機の固定子、回転電機および回転電機の固定子の製造方法 Ceased WO2024075549A1 (ja)

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JP2024555717A JP7814543B2 (ja) 2022-10-07 2023-09-22 回転電機の固定子、回転電機および回転電機の固定子の製造方法
CN202380065290.5A CN119923782A (zh) 2022-10-07 2023-09-22 旋转电机的定子、旋转电机以及旋转电机的定子的制造方法

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JP2022-162164 2022-10-07
JP2022162164 2022-10-07

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