JP5975939B2 - Rotating electric machine and method of manufacturing rotating electric machine - Google Patents

Description

  The present invention relates to a rotating electrical machine such as a generator, a motor, and a motor generator, and a method for manufacturing the rotating electrical machine.

  As a stator of a conventional rotating electric machine, a plurality of teeth protrudes from a yoke inside a ring-shaped core, an insulating bobbin is formed on each tooth and yoke, and a plurality of wires are wound around each tooth via the insulating bobbin. In the case where the coil is formed, the connection conductor connected to each coil is fixed by a resin molded product that is fitted into an insulating bobbin and fixed. The resin molded product is composed of a connection conductor support and a connection conductor support, holds the connection conductor between the connection conductor support and the connection conductor support, and inserts the protruding portion of the insulating bobbin into the hole of the connection conductor support, There is one that latches a retaining corner (a collar portion) provided on the protruding portion and fixes it so as not to come off (for example, see Patent Document 1).

  Further, as a stator of another rotating electrical machine, four circular grooves having a U-shaped cross section are formed in the insulating support portion of the connection ring so as to form a concentric circle, and include a neutral wire. Four three-phase conductive parts are housed in the grooves. The four conductive parts distribute the electric power input to the U-phase, V-phase, and W-phase terminals to each coil. A protrusion protruding in the radial direction is formed on the outer peripheral side of the coil end portion of the insulating bobbin, and a groove is formed below the protrusion. On the other hand, an elastic deformation portion is formed in a portion of the insulating support portion that faces the protrusion. A hook-shaped portion is formed at the lower end portion of the elastic deformation portion, and the hook-shaped portion is engaged with the edge of the groove. A slight gap is generated in the engagement portion between the groove of the insulating bobbin and the elastically deformable portion due to dimensional tolerance. Therefore, the connection ring cannot be completely fixed to the insulating bobbin, and there is a possibility that the connection ring is shifted by the gap. Therefore, there is a type in which an adhesive is filled in the gap between the groove and the elastically deforming portion, and the connection ring is completely fixed to the insulating bobbin (for example, see Patent Document 2).

JP-A-2005-130580 (paragraph number 0011 in the specification, FIGS. 4 and 5) JP 2010-148175 (paragraph numbers 0012 to 0016 in the specification and FIG. 3)

The conventional rotating electrical machine is configured as described above, and the protrusion of the insulating bobbin is fitted into the hole of the connecting conductor support as in Patent Document 1, and the retaining corner (the flange) provided on the protrusion is hooked. In such a case, a slight gap due to dimensional tolerance may occur in the fitting portion, and there is concern about the reliability of the latch. In addition, there is a problem that it is difficult to ensure mechanical strength due to the engagement between insulators. In fixing with an adhesive as disclosed in Patent Document 2, there are concerns over deterioration over time due to temperature and vibration, adhesion failure due to dust and voids on the adhesive surface during application, and reduction in adhesive strength due to chemicals and oil. In particular, an in-vehicle rotating electrical machine is expected to be used in a wide temperature range and a severe vibration environment. For this reason, if the entire connection ring is vibrated under a severe vibration environment, excessive stress may be generated at the connection between the coil and the conductive part of the connection ring, resulting in a lack of reliability in terms of durability. There is a point.
The present invention has been made to solve the above-described problems, and it is an object of the present invention to obtain a highly reliable rotating electrical machine and to provide a highly reliable manufacturing method of a rotating electrical machine.

In the rotating electrical machine according to the present invention,
A rotating electrical machine including a stator having an iron core, a fixing member, a wiring device, an insulating bobbin, and a coil,
The iron core has a tooth portion and a yoke portion, the tooth portion protrudes from the yoke portion toward the inner diameter side and has an end surface as a magnetic pole surface, and the magnetic pole surface is a cylindrical inner peripheral surface. A plurality of the tooth portions are arranged so as to form
The fixing member is made of a metal material, and has a fixing portion and a joint portion, and the fixing portion protrudes in a direction intersecting the fixing portion from the fixing portion. Is formed integrally with
The wire connection device includes an insulating support portion, a member to be bonded, and a conductive portion. The insulating support portion is formed of an insulating material, and the member to be bonded is formed of metal and integrated with the insulating support portion. The conductive part is fixed to the insulating support part,
The insulating bobbin is attached to the tooth part,
The coil is formed by winding an electric wire around the insulating bobbin,
The fixing portion of the fixing member is sandwiched and fixed between the insulating bobbin and the tooth portion so that the joint portion protrudes in a direction away from the tooth portion,
The wire connection device is disposed on the outside in the axial direction of the magnetic pole surface of the coil, and the member to be joined is fixed to the tooth portion via the fixing member by being joined to the joint portion of the fixing member, The conductive part is connected to the coil.

The method for manufacturing a rotating electrical machine according to the present invention includes the following steps.
A. A tooth portion and a yoke portion, and the tooth portion protrudes from the yoke portion toward the inner diameter side and has an end surface as a magnetic pole surface, and the magnetic pole surface forms a cylindrical inner surface. A process of manufacturing an iron core having a plurality of tooth portions.
A. A step of manufacturing a fixing member having a fixing part and a joining part, and made of a metal material integrally with the fixing part so that the joining part protrudes from the fixing part in a direction intersecting the fixing part;
C. An insulating support part, a member to be joined, and a conductive part, wherein the insulating support part is made of an insulating material, and the member to be joined is made of metal and integrated with the insulating support part. A step of manufacturing a wire connection device, wherein the conductive portion is fixed to the insulating support portion;
D. A step of producing a plurality of divided bobbin members which are divided so as to constitute an insulating bobbin when combined and movable in the axial direction of the magnetic pole surface when mounted on the tooth portion;
E. A step of attaching the divided bobbin member to the tooth portion so as to sandwich the fixing portion of the fixing member between the tooth portion and forming an insulating bobbin.
F. A step of winding an electric wire around the insulating bobbin to press the fixing portion against the tooth portion via the divided bobbin member so as to be clamped and fixed between the tooth portion and forming a coil.
G. A step of disposing the wire connection device outside the magnetic pole surface of the coil in the axial direction, bonding the member to be bonded and the bonding portion, and fixing the bonding member to the tooth portion via the fixing member;

  Since the rotating electrical machine according to the present invention is configured as described above, a highly reliable rotating electrical machine can be obtained.

  Since the manufacturing method of the rotating electrical machine according to the present invention includes the steps as described above, a highly reliable manufacturing method of the rotating electrical machine can be provided.

It is a perspective view which shows the stator of the rotary electric machine which is Embodiment 1 of this invention. It is a perspective view which shows a part of axial direction cross section of the stator which is Embodiment 1 of this invention. It is sectional drawing which shows a part of stator which is Embodiment 1 of this invention. It is a block diagram which shows the insulation bobbin of FIG. It is a perspective view of the metal plate of FIG. It is a perspective view which shows the modification of a metal plate. It is a perspective view which shows another modification of a metal plate. It is sectional drawing of the stator which is Embodiment 2 of this invention. It is sectional drawing of the stator which is Embodiment 3 of this invention. It is sectional drawing of the stator which is Embodiment 4 of this invention. It is sectional drawing of the stator which is Embodiment 5 of this invention. It is sectional drawing of the stator which is Embodiment 6 of this invention.

Embodiment 1 FIG.
1 to 7 show a first embodiment for carrying out the present invention. FIG. 1 is a perspective view showing a stator of a rotating electric machine, and FIG. 2 is a part of an axial cross section of the stator. It is a perspective view shown. 3 is a cross-sectional view showing a part of the cross section of the stator according to the first embodiment of the present invention, and FIG. 4 is a front view and a side view of the insulating bobbin of FIG. FIG. 5 is a perspective view of the metal plate of FIG. FIG. 6 is a perspective view showing a modification of the metal plate, and FIG. 7 is a perspective view showing another modification of the metal plate.

  In these drawings, the stator 10 includes a stator core 20, an insulating bobbin 30, a coil 50, a housing 60, a conductive portion 70, and a connection ring 140. In the rotating electric machine of the present embodiment, the stator core 20 has a split core configuration, and an annular yoke portion 22 is provided so as to magnetically and mechanically connect the outer peripheral sides of the plurality of tooth portions 21. Yes. Such a stator core 20 is accommodated in the housing 60. A plurality of teeth 21 are arranged such that the inner diameter side surface forms a magnetic pole surface as a cylindrical inner peripheral surface. In the example shown in FIG. 2, the number of the tooth portions 21 is 12 and is constituted by the annular conductors 71, 72, 73, and 74 for the neutral point N, U phase, V phase, and W phase. The conductive portion 70 is accommodated and fixed in an annular groove formed in an insulating support portion 75 (details will be described later) of the connection ring 140 and having a rectangular cross section. The present invention can be applied not only to the split core structure.

  The tooth portion 21 and the yoke portion 22 of the stator core 20 are each formed by laminating electromagnetic steel plates, and the laminated tooth portion 21 is fitted and fixed to a fitting portion (not shown) of the yoke portion 22. The child iron core 20 is manufactured. Each tooth portion 21 is provided with an insulating bobbin 30 formed of a resin molded product so as to surround the periphery of the side surface. As shown in FIG. 4, the insulating bobbin 30 is a divided bobbin member made of an insulating material having plate-like protrusions 32 and 33 provided at both ends of a half barrel 31 having a U-shaped cross section (square hook shape). Two of 34 are combined in the up-and-down direction, and it has the square cylindrical trunk | drum 36 and the collar part 37 located in the both ends of this trunk | drum 36. As shown in FIG.

  The divided bobbin member 34 is attached to the tooth portion 21 so that the tooth portion 21 is sandwiched between the two divided bobbin members 34 from the vertical direction in FIG. 4. The half barrel portion 31 and the tooth portion 21 of the upper divided bobbin member 34 are mounted. A coil 50 is formed by winding a wire 51 around the insulating bobbin 30 a predetermined number of times after sandwiching a fixing portion 101 (details will be described later) of the metal plate 100 therebetween. When the coil 50 is formed by winding the electric wire 51 a plurality of times, the fixing portion 101 of the metal plate 100 is pressed against the tooth portion 21 by the half barrel portion 31 of the insulating bobbin 30 and is fixed in a firmly sandwiched state. . In this embodiment, the metal plates 100 are provided at equal intervals at four locations on the entire circumference (every two when there are 12 tooth portions 21).

  FIG. 5 is a perspective view showing details of the metal plate 100. The metal plate 100 is a plate-like fixing portion 101, and a plate raised in a substantially perpendicular direction as a direction intersecting the fixing portion 101 from the fixing portion 101. It has the upright part 102 as a shape junction part. The upright portion 102 is provided with a hole forming portion 103 into which a fixing screw 108 (see FIG. 3) as a fastening member is inserted. The width of the upright portion 102 is slightly narrower than the width of the fixed portion 101, and the hole forming portion 103 is formed at the same time as the steel plate is punched into a strip shape in advance, and then bent into an L shape, that is, almost from the fixed portion 101. The upright portion 102 is raised at a right angle.

  The connection ring 140 includes ring-shaped conductors 71, 72, 73, and 74, a resin-made annular insulating support portion 75, and a metal columnar member 141 as a joined portion (FIG. 3). The cylindrical member 141 is integrated with the insulating support portion 75 by an insert mold so that the protruding portion 142 of the cylindrical member 141 protrudes from the insulating support portion 75 in the radial outside of the insulating support portion 75, that is, radially outward of the stator. Is molded. Although not shown, the cylindrical member 141 has a screw hole portion into which the fixing screw 108 is screwed. The upper part of the insulating support 75 in FIG. 3 is provided with a groove that forms an annular groove having a rectangular cross section, and the conductors 71, 72, 73, and 74 are accommodated and fixedly supported. The connection ring 140 is disposed in the vicinity of the coil end of the stator 10, which is the axially outer side of the stator 10, and electrically connects the coils 50 wound around the respective tooth portions 21. The coil 50 and the conductors 71, 72, 73, 74 are joined by welding. For example, when the rotating electrical machine is an electric motor, the conductors 71, 72, 73, and 74 supply power to each coil 50 that is input to U-phase, V-phase, and W-phase terminals (not shown).

  As shown in FIGS. 2 and 3, the connection ring 140 as described above is inserted into the hole forming portion 103 (FIG. 5) of the upright portion 102 by inserting a metal fixing screw 108 into the cylindrical member 141 and tightened. Thus, the metal plate 100 is firmly fixed to the tooth portion 21 so as not to move in the radial direction (left-right direction in FIG. 3) and the axial direction (up-down direction in FIG. 3) of the stator.

  FIG. 6 shows a modification of the metal plate. In FIG. 6, a hole forming portion 112 is provided in the fixing portion 111 of the metal plate 110. About another structure, it is the same as that of the metal plate 100 shown in FIG. The hole forming part 112 and the hole forming part 103 are formed at the same time when the metal plate 110 is punched out into a strip shape from a steel plate with a press, and then bent into an L shape to form the upright part 102. Although not shown in the drawings, if a positioning convex portion is provided inside the half barrel portion 31 of the divided bobbin member 34 and the hole forming portion 112 provided in the fixing portion 111 is fitted, the electric wire 51 is wound a plurality of times. Since the position does not shift when the fixing part 111 of the metal plate 110 is pressed and fixed to the tooth part 21 with the half cylinder part (refer to the half cylinder part 31 in FIG. 4), the operation becomes easy. .

  FIG. 7 shows another modification of the metal plate. In FIG. 7, the fixed portion 101 of the metal plate 120 is provided with a bent portion 121 on the opposite side to the upright portion 102. About another structure, it is the same as that of the metal plate 100 shown in FIG. The half barrel portion 31 is inserted between the upright portion 102 and the bent portion 121 of the metal plate 120 so as not to move in the radial direction of the stator (left and right direction in FIG. 3). If the metal plate 120 is fixed by winding the electric wire 51 around the wire 31 a plurality of times, the position of the metal plate 120 does not shift when fixing, so that the operation becomes easy.

  As described above, the insulating bobbin 30 is configured by combining the two divided bobbin members 34, and the fixing portions 101, 111, 121 of the metal plates 100, 110, 120 are assembled between the teeth 21 of the stator core 20. The coil 50 is formed by winding the electric wire 51 a plurality of times, and the fixing portion of each metal plate is firmly sandwiched between the tooth portion 21 and the half barrel portion 31 of the insulating bobbin 30 and fixed to the stator core 20. Since it can fix by winding the electric wire 51 in multiple times and forming the coil 50, the method of newly fixing is not required. Then, the fixed metal plate 100 or the like is fastened and fixed by screwing the fixing screw 108 into the screw hole of the metal column member 141 provided integrally with the connection ring 140, thereby fixing the connection ring 140 to the stator. It is firmly fixed to the iron core 20.

  The insulating support portion 75 and the metal column member 141 are integrally formed by an insert mold, and the metal column member 141 and the metal plate 100 are screwed together with the metal fixing screw 108, so that the metal plate member 141 is firmly fixed. it can. Thereby, it can be used in a wide temperature range, there is no fear of aging deterioration and adhesion failure, and even if the entire connection ring 140 receives vibration in a severe vibration environment, the connection portion between the coil 50 and the conductors 71 to 74 is excessive. Generation of stress can be prevented, and reliability can be improved. By arranging the upright portion 102 of the metal plate 100 on the outer diameter side of the connection ring 140 (insulating support portion 75), a space can be secured on the inner diameter side, and the rotor can be assembled from either side of the stator in the axial direction. Can be assembled easily. In addition, even if the magnetic flux generated from the rotor passes through the fixed portion 101, it is linked to the coil, so there is no concern about leakage magnetic flux, and torque reduction can be prevented.

Embodiment 2. FIG.
FIG. 8 is a cross-sectional view illustrating a configuration of a stator according to the second embodiment. In FIG. 8, the connection ring 240 of the stator 11 has a metal cylindrical member 241 as a joined portion. The insulating support portion 75 and the cylindrical member 241 are integrally formed by an insert mold so that the protruding portion 242 of the cylindrical member 241 protrudes from the insulating support portion 75 to the outside in the radial direction of the insulating support portion 75 by a predetermined dimension. The inner diameter of the cylindrical member 241 is smaller than the outer diameter of the columnar fixing pin 208 as a fastening member and a rivet member by a predetermined dimension. The cylindrical member 241 has sufficient strength so as not to be deformed when the fixing pin 208 is press-fitted and to generate a large stress on the insulating support portion 75. In order to relieve stress during press-fitting and facilitate press-fitting, a plurality of annular protrusions are provided on the outer periphery of the fixing pin 208 to reduce the contact area with the inner peripheral portion of the cylindrical member 241 or to make aluminum. The fixing pin may be formed of a soft material such as. Four cylindrical members 241 are provided at equal intervals in the circumferential direction of the insulating support portion 75. In this embodiment, the connection ring 240 is disposed in the vicinity of the coil end of the stator 11, and instead of the connection ring 240 and the upright portion 102 in FIG. The pin 208 is inserted into the hole forming portion 103 (see FIG. 5) of the upright portion 102 and is fitted and fixed to the cylindrical member 241 in an interference fit state.

  Also in this embodiment, since the metal fixing pin 208 is tightly fitted to the metal cylindrical member 241 and the connection ring 240 is fixed to the metal plate 100, that is, the cylindrical member 241 and the metal plate 10 are rivets (pins). ) The connection ring 240 can be firmly fixed to the stator iron core 20 by bonding, and the fixing by the fixing pin 208 can be shortened in working time compared to the fixing by the fixing screw 108.

Embodiment 3 FIG.
FIG. 9 is a cross-sectional view illustrating a configuration of a stator according to the third embodiment. In FIG. 9, the connection ring 340 of the stator 12 has a metal cylindrical member 341 as a joined portion. The insulating support portion 75 and the cylindrical member 341 are integrally formed by an insert mold so that the protruding portion 342 of the cylindrical member 341 protrudes from the insulating support portion 75 inward in the radial direction of the insulating support portion 75 by a predetermined dimension. Four cylindrical members 341 are provided at equal intervals in the circumferential direction of the insulating support portion 75. The inner diameter of the cylindrical member 341 is smaller than the outer diameter of the columnar fixing pin 208, the connection ring 340 is disposed near the coil end of the stator 12, and the metal fixing pin 208 is placed on the upright portion 102. It is inserted through the hole forming portion 103 (see FIG. 5), and fitted and fixed to the cylindrical member 341 in an interference fit state.

  Also in this embodiment, since the metal fixing pin 208 is tightly fitted to the metal cylindrical member 341 and the connection ring 340 is fixed to the metal plate 100, the connection ring 340 can be firmly fixed to the stator core 20. However, it is possible to shorten the working time by fixing by fixing pin 208 compared to fixing by fixing screw 108. Further, by arranging the upright portion 102 on the inner diameter side of the connection ring 340, the upright portion 102 can be fixed on the side close to the center of gravity of the connection ring 340, so that vibration of the connection ring 340 is suppressed and the conductive portion 70 is welded. Excessive stress can be prevented from acting on the coil 50, and reliability can be improved.

Embodiment 4 FIG.
FIG. 10 is a cross-sectional view illustrating a configuration of a stator according to the fourth embodiment. In FIG. 10, the connection ring 440 of the stator 13 has a plate material 441 as a joined portion formed of the same metal material as a metal plate 400 described later. The insulating support portion 75 and the plate material 441 are integrally formed by an insert mold so that the protruding portion 442 of the plate material 441 protrudes from the insulating support portion 75 inward in the radial direction of the insulating support portion 75 by a predetermined dimension. Four plate members 441 are provided at equal intervals in the circumferential direction of the insulating support portion 75. The metal plate 400 has the same shape as that of the metal plate 100 of FIG. 5 except that the hole forming portion is not provided in the upright portion 402 as a joint portion. In the connection ring 440 as described above, the end of the plate member 441 contacts the right side of the tip of the upright portion 402 of the metal plate 400 and the upper ends thereof are flush with each other. Arranged in the section. Then, the plate material 441 and the upright portion 402 are welded at the welded portion 406 by, for example, electron beam welding and firmly fixed. It should be noted that other joining such as brazing may be used instead of metallurgical joining such as welding.

  Also in this embodiment, since the metal plate 441 is fixed to the metal plate 400 by welding as metallurgical joining, the connection ring 440 can be firmly fixed to the stator core 20.

Embodiment 5 FIG.
FIG. 11 is a cross-sectional view illustrating a configuration of a stator according to the fifth embodiment. In FIG. 11, the connection ring 540 of the stator 14 includes a metal rectangular tube member 541 as a joined portion. The insulating support portion 75 and the rectangular cylindrical member 541 are integrally formed by insert molding so that the axial direction of the rectangular cylindrical member 541 is the axial direction of the connection ring 540 (stator 14). Four rectangular cylinder members 541 are provided at equal intervals in the circumferential direction of the insulating support portion 75. The metal plate 500 has a shape similar to that of the metal plate 100 of FIG. 5, but both sides of the front end portion of the upright portion 502 as a joint portion are notched as shown in FIGS. 11B and 11C. The difference is that the hole forming portion 103 is not provided. Since other configurations are the same as those of the first embodiment shown in FIG. 1, the same reference numerals are given to the corresponding components and the description thereof is omitted.

  Also in this case, first, the fixing portion 101 of the metal plate 500 is sandwiched between the tooth portion 21 and the half barrel portion 31 of the stator core 20, and the coil 51 is formed by winding the electric wire 51 a plurality of times from the outside to be firmly tightened. Fix it. The position of the rectangular cylindrical member 541 provided in the connection ring 540 is aligned with the position of the upright portion 502 of the metal plate 500 fixed to the tooth portion 21, and the connection ring 540 is moved downward in the axial direction of the stator 14 (downward direction in FIG. 11). ), The rectangular tube member 541 and the upright portion 502 are fitted to each other, and while the upright portion 502 is slightly plastically deformed by the rectangular tube member 541, the connection ring 540 is pushed down and pushed into a predetermined position to be fixed. The rectangular tube member 541 has a sufficient strength not to be deformed when the upright portion 502 is pushed in while being plastically deformed, and does not adversely affect the insulating support portion 75 such as generating a large stress. Yes.

  Also in this embodiment, the upright portion 502 of the metal plate 500 is plastically deformed and tightly fitted to the metal square tube member 541, that is, the square tube member 541 and the upright portion 502 of the metal plate 500 are press-fitted. Since joining is performed by mechanical joining, the connection ring 540 can be firmly fixed to the stator core 20.

Embodiment 6 FIG.
FIG. 12 is a cross-sectional view illustrating a configuration of a stator according to the sixth embodiment. In FIG. 12, the connection ring 640 of the stator 15 has a rectangular tube member 641 made of metal as a joined portion. The insulating support portion 75 and the rectangular cylinder member 641 are integrally formed by insert molding so that the axial direction of the rectangular cylinder member 641 is the axial direction of the stator. Four rectangular cylinder members 641 are provided at equal intervals in the circumferential direction of the insulating support portion 75. The metal plate 600 has a shape similar to that of the metal plate 100 of FIG. 5, but claw portions 604 are provided on both sides of the end portion of the upright portion 602 as a joint portion as shown in FIGS. 12 (b) and 12 (c). In addition, a difference is that the upright portion 602 is provided with a slit forming portion 603 that forms a U-shaped slit in a direction opposite to the upright direction of the upright portion 602. By providing the slit forming portion 603, the claw portion 604 can be easily moved with a predetermined force in the left-right direction in FIG. 12B by elastic deformation of the slit forming portion 603. Since other configurations are the same as those of the first embodiment shown in FIG. 1, the same reference numerals are given to the corresponding components and the description thereof is omitted.

  Also in this case, first, the fixing portion 101 of the metal plate 600 is sandwiched between the tooth portion 21 and the half barrel portion 31 of the stator core 20, and the coil 50 is formed by winding the electric wire 51 a plurality of times from the outside and tightening firmly. Fix it. The position of the rectangular cylindrical member 641 provided on the connection ring 640 is aligned with the position of the upright portion 602 of the metal plate 600 fixed to the tooth portion 21, and the connection ring 640 is axially below the stator (downward in FIG. 12). The rectangular tube member 641 and the slit forming portion 603 are fitted to each other, the slit forming portion 603 is elastically deformed by the rectangular tube member 641, and the connection ring 640 is pushed down while the claw portion 604 is moved in the slit. When the connection ring 640 is pushed to a predetermined position, the claw portion 604 penetrates the rectangular cylindrical member 641 to face upward, and the slit forming portion 603 is released from being elastically deformed, and the claw portion 604 is shown in FIG. The rectangular tube member 641 is extended in the left-right direction and engaged with the end of the rectangular tube member 641 so as not to come out of the rectangular tube member 641.

  Also in this embodiment, the metal rectangular tube member 641 is hooked on the claw portion 604 of the metal plate 600, that is, the rectangular tube member 641 and the claw portion 604 of the metal plate 600 are joined by hooking. Therefore, the connection ring 640 can be firmly fixed to the stator core 20.

  In each of the embodiments described above, the insulating bobbin 30 is configured by combining two split bobbin members 34, and the electric wire 51 is wound a plurality of times with the fixed portion 101 of the metal plate 100 sandwiched by one of the split bobbin members 34. Although the fixing portion 101 is pressed firmly to the tooth portion 21 and firmly fixed when the coil 50 is formed by rotating, the insulating bobbin is not divided into two and formed into a body having a rectangular cylindrical body. In addition, a slight gap may be provided between the tooth portion 21 and the body portion, and the metal plate fixing portion may be pushed in as a wedge and fixed in a tight-fitting state. In this case, the fixed part of the metal plate is pushed as a wedge between the insulating bobbin and the tooth part, so that the strength of the insulating bobbin and the inner peripheral part of the insulating bobbin are not damaged or excessive stress is generated. Sufficient consideration should be given to the variation in the gap size between the teeth and the teeth. Note that the fixing screw and the fixing pin as the mechanical joining means and the fastening member in the embodiment may be made of an insulating material with sufficient strength. Further, instead of the cylindrical member 141 in the first embodiment, a coil spring-like helical coil is insert-molded in the insulating support portion 75, a helical coil insert that is embedded by drilling after embedding the insulating support portion, etc. Another metal member to be joined may be used.

  In each of the above embodiments, as an example of a connection ring as a connection device, an annular insulating support portion 75 and an annular groove formed in the insulating support portion 75 and forming a groove having a rectangular cross section are provided. Although the annular conductors 71, 72, 73, and 74 are shown as being housed and fixed, the present invention is not limited to this. For example, depending on the connection mode with the coil 50, a conductor having a rectangular or circular cross section has an arc shape or a C shape, and the cross section is rectangular in an arc shape or C shape to accommodate and fix them. The groove may be formed. Further, a conductor having an annular shape, an arc shape, a C shape, or the like may be insert-molded and fixed to the insulating support portion. In addition, the insulating support portion is not limited to an annular shape, but is an annular shape, an annular shape by combining four arc-shaped four-part insulating support portions having a central angle of 90 degrees, etc. The same effect is produced.

In the above embodiment, the columnar member 141, the cylindrical members 241 and 341, the plate member 441, the rectangular cylindrical member 541, the rectangular cylindrical member 641, and the upright portion of the metal plate of the connection rings 140, 240, 340, 44, 540, and 640 102, 402, 502, and 602 are mechanically joined by the fixing screw 108, the fixing pin 208, and screw joining, pin (rivet) joining as a joining by a fastening member, a welded portion 406 as metallurgical joining, and a rectangular tube. Although the press-fitting joint as the mechanical joint between the member 541 and the upright portion 502 and the engagement between the rectangular tube member 641 and the upright portion 602 are shown, these various joints can be appropriately selected. As is well known, mechanical joining includes methods such as rivet joining, joining with a fastening screw or a fixing pin, and press-fit joining in which members are fitted together by an interference fit. Examples of metallurgical joining include welding by melting of materials, pressure welding such as resistance welding, and brazing. These methods can be used as appropriate. That is, in the present invention, the object can be achieved if the joint part and the joint part to be joined are made of a metal material.
Further, in the present invention, within the scope of the invention, the above-described embodiments can be freely combined, and each embodiment can be appropriately changed or omitted.

10, 11, 12, 13, 14, 15 Stator, 20 Stator core, 21 Teeth,
22 yoke parts, 30 insulating bobbins, 31 half barrel parts, 34 divided bobbin members,
36 body part, 37 collar part, 50 coil, 51 electric wire, 70 conductive part, 71 conductor,
75 Insulating support part, 100 metal plate, 101 fixing part, 102 upright part,
108 fixing screw, 110 metal plate, 111 fixing part, 120 metal plate,
140 connection ring, 141 cylindrical member, 208 fixing pin, 240 connection ring,
241 cylindrical member, 340 connection ring, 341 cylindrical member, 342 protrusion,
400 Metal plate, 402 Upright part, 406 Welded part, 440 Connection ring,
441 plate material, 500 metal plate, 502 upright part, 600 metal plate, 602 upright part,
603 Slit formation part, 604 nail | claw part, 640 Connection ring, 641 Rectangular cylinder member.

Claims (8)

A rotating electrical machine including a stator having an iron core, a fixing member, a wiring device, an insulating bobbin, and a coil,
The iron core has a tooth portion and a yoke portion, the tooth portion protrudes from the yoke portion toward the inner diameter side and has an end surface as a magnetic pole surface, and the magnetic pole surface is a cylindrical inner peripheral surface. A plurality of the tooth portions are arranged so as to form
The fixing member is made of a metal material, and has a fixing portion and a joint portion, and the fixing portion protrudes in a direction intersecting the fixing portion from the fixing portion. Is formed integrally with
The wire connection device includes an insulating support portion, a member to be bonded, and a conductive portion. The insulating support portion is formed of an insulating material, and the member to be bonded is formed of metal and integrated with the insulating support portion. The conductive part is fixed to the insulating support part,
The insulating bobbin is attached to the tooth part,
The coil is formed by winding an electric wire around the insulating bobbin,
The fixing portion of the fixing member is sandwiched and fixed between the insulating bobbin and the tooth portion so that the joint portion protrudes in a direction away from the tooth portion,
The wire connection device is disposed on the outside in the axial direction of the magnetic pole surface of the coil, and the member to be joined is fixed to the tooth portion via the fixing member by being joined to the joint portion of the fixing member, A rotating electrical machine in which the conductive portion is connected to the coil. The rotating electrical machine according to claim 1, wherein the fixing member is formed by pressing a metal plate to form the fixing portion and the joint portion. The rotating electrical machine according to claim 1, wherein the wire connection device is obtained by insert molding the member to be joined to the insulating support portion. The rotating electrical machine according to any one of claims 1 to 3, wherein the joining of the member to be joined and the joining portion is mechanical joining by a fastening member. The rotating electrical machine according to any one of claims 1 to 3, wherein the joining of the member to be joined and the joining portion is metallurgical joining. The joined member is a fitted member, and the joined portion is a fitted portion,
The rotation according to any one of claims 1 to 3, wherein the joining between the member to be joined and the joining portion is a mechanical joining in which the fitting portion is interference-fitted to the member to be fitted. Electric. The joined portion is an elastic portion provided with a claw portion, and the joined member is a cylindrical fitted member,
The joined member and the joined portion are joined by inserting the claw portion of the elastic portion into the tubular fitted member and elastically deforming the elastic portion while the claw portion is elastically deformed. 4. The mechanical joint according to claim 1, wherein the claw portion engages with an end portion of the cylindrical mating member by penetrating the elastic member and releasing the elastic portion from elastic deformation. 5. The rotating electrical machine described. The manufacturing method of the rotary electric machine provided with the following process.
A. A tooth portion and a yoke portion, and the tooth portion protrudes from the yoke portion toward the inner diameter side and has an end surface as a magnetic pole surface, and the magnetic pole surface forms a cylindrical inner surface. A process of manufacturing an iron core having a plurality of tooth portions.
A. A step of manufacturing a fixing member having a fixing part and a joining part, and made of a metal material integrally with the fixing part so that the joining part protrudes from the fixing part in a direction intersecting the fixing part; C. An insulating support part, a member to be joined, and a conductive part, wherein the insulating support part is made of an insulating material, and the member to be joined is made of metal and integrated with the insulating support part. A step of manufacturing a wire connection device, wherein the conductive portion is fixed to the insulating support portion;
D. A step of producing a plurality of divided bobbin members which are divided so as to constitute an insulating bobbin when combined and movable in the axial direction of the magnetic pole surface when mounted on the tooth portion;
E. A step of attaching the divided bobbin member to the tooth portion so as to sandwich the fixing portion of the fixing member between the tooth portion and forming an insulating bobbin.
F. A step of winding an electric wire around the insulating bobbin to press the fixing portion against the tooth portion via the divided bobbin member so as to be clamped and fixed between the tooth portion and forming a coil.
G. A step of disposing the wire connection device outside the magnetic pole surface of the coil in the axial direction, bonding the member to be bonded and the bonding portion, and fixing the bonding member to the tooth portion via the fixing member;

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