JP2008161015A - Stator of rotary electric machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stator of a rotary electric machine in which the number of the turns of coils and the diameter of the coils are increased, i.e. the space factor can be improved, without having to change miscellaneous dimensions, including the dimensions and intervals of magnetic pole teeth, and to shorten the intervals of the magnetic pole teeth, without having to reduce the number of turns of the coils and the diameter of the coils. <P>SOLUTION: This stator is made up of an annular stator core 2 having a plurality of the magnetic pole teeth 4 arranged with intervals in the circumferential direction, coils 6 each wound on magnetic pole teeth 4 of the stator core 2, and cylindrical insulation members 5, provided with base end portions 11a, 11b arranged between the coils 6 and each magnetic pole tooth 4 to cover end surfaces of each tooth 4 in the thickness direction of the stator core 2, and connection portions 12a, 12b, which extend from both sides of the base end portion 11a to cover the side surfaces of the teeth 4 along the thickness direction of the stator core 2. The insulating members 5 consists of two insulating member pieces 13, 14, which are fitted to each other. The insulating member pieces 13, 14 are fitted to each other, in such a way that the connecting portions 12a, 12b cover the side surfaces of the base end portions 11b. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a stator of a rotating electrical machine such as an electric motor or a generator, and more particularly to a structure of an insulating member that improves a winding space factor.

  Conventionally, as a stator of a rotating electrical machine such as an electric motor or a generator, for example, as disclosed in Patent Document 1 (Japanese Patent Laid-Open No. 2003-79080), an annular stator core formed by laminating a plurality of magnetic steel plates And a coil wound around a plurality of magnetic pole teeth arranged in the circumferential direction of the stator core and projecting inward in the radial direction, covering the outer circumference of the magnetic pole teeth and the magnetic pole teeth and the coil What has the cylindrical insulation member arrange | positioned so that it may be pinched | interposed between is used.

  The prior art stator 30 shown in FIG. 8 is configured in an annular shape by combining a plurality of stator units 32 divided in the circumferential direction for each magnetic pole tooth 31. Each stator unit 32 is attached to a core unit 34 formed by laminating a plurality of magnetic steel plates 33 so as to form a single magnetic pole tooth 31, and a cylindrical insulating member 35 covering the outer periphery of the magnetic pole tooth 31 is attached. The coil 36 is wound around the insulating member 35.

  Two insulating member pieces 37 and 38 having a substantially U-shaped cross section constituting the insulating member 35 include a side surface portion 39 covering the side surface of the magnetic pole teeth 31 and a base end portion 40 covering the end surface of the magnetic pole teeth 31. The two connecting portions 43, 44, 45, 46 having the fitting portions 41, 42 at the tip are provided.

  The fitting portions 41 and 42 of the insulating member pieces 37 and 38 are fitted so that the portions having the minimum wall thickness required for strength and insulation performance are overlapped with each other, whereby the insulating member The thickest thick portion (connecting portion) 47 is formed.

  When viewed for each stator unit 30, the side surface portions 39 of the insulating member 35 disposed on both sides in the width direction of the magnetic pole teeth 31 are on the one side surface above the center in the stacking direction of the magnetic steel plates 33 of the magnetic pole teeth 31. Fitting portions 41 and 42 are arranged on one end side, and a thick portion 47 is formed at that portion and protrudes to one side in the width direction of the magnetic pole teeth 31. The fitting portions 41 and 42 are disposed below (in the other end side) the center of the magnetic steel sheet 33 in the stacking direction of the magnetic steel sheet 33, and the thick portion 47 is formed in that portion, so that the magnetic teeth 31 Projects to the other side in the width direction.

In the stator 30 of the prior art, the thick portion 47 of the insulating member 35 arranged on the opposing surface of the adjacent stator unit 32, that is, the fitting portions 41 and 42 between the insulating member pieces 37 and 38 are laminated with the magnetic steel plate 33. Since it is arranged at a position shifted in the direction, the coil 36 of the other stator unit 32 can be protruded at a position where the coil 36 of one stator unit 32 does not protrude. And the clearance gap between the coils 36 of the adjacent stator unit 32 is ensured, and the coil 36 can be wound.
JP 2003-79080 A

  However, in the prior art, the fitting portions 41 and 42 of the insulating member pieces 37 and 38 are fitted so that the portions having the minimum wall thickness required for strength and insulation performance overlap each other. Accordingly, since the thickest portion (connecting portion) 47 of the insulating member 35 is provided, the adjacent stator unit 32 can be disposed even if the thick position in the same slot is shifted in the stacking direction. There is a problem in that the gap dimension is partially reduced, and the number of turns of the coil 36 corresponding to the thick portion is reduced.

  The present invention has been made in view of the above problems, and without increasing the dimensions and spacing of the magnetic teeth, the number of turns of the coil and the diameter of the coil are increased, that is, the space factor is improved. It is an object of the present invention to provide a stator for a rotating electrical machine that can reduce the interval between magnetic pole teeth without reducing the number of turns of the coil and the coil diameter.

  In order to solve the above-described problem, the invention according to claim 1 is an annular stator core having a plurality of magnetic pole teeth arranged at intervals in the circumferential direction, and a coil wound around each of the magnetic pole teeth of the stator core. And a base end portion that is disposed between the coil and each magnetic pole tooth and covers an end surface of the tooth in the thickness direction of the stator core, and a side surface of the tooth along the thickness direction of the stator core extending from both sides of the base end portion. A cylindrical insulating member having a connecting portion to cover, the insulating member is composed of two insulating member pieces fitted together, and the insulating member pieces are attached to each other so that the connecting portion covers the side surface of the base end portion. It is a configuration.

  In the invention according to claim 2, the insulating member has an approximately U-shaped insulating member piece having one base end portion and a connecting portion, and an approximately plate-shaped insulating member piece having the other base end portion. The connecting portions on both sides of the insulating member piece having a substantially U-shaped cross section are configured to be fitted so as to cover the side surfaces on both sides of the base end portion of the insulating member piece having a substantially plate-shaped cross section.

  The invention according to claim 3 is configured such that the insulating member piece having a substantially U-shaped cross section and the insulating member piece having a substantially plate-like cross section are fitted so as to be movable in the thickness direction of the stator core.

  According to a fourth aspect of the present invention, the plate thickness of the base end portion of the insulating member piece having a substantially plate-like cross section is larger than the plate thickness of the connecting portion of the insulating member piece having a substantially U-shaped cross section.

  In the invention according to claim 5, the insulating member piece having a substantially U-shaped cross section and the insulating member piece having a substantially plate-like cross section each include a flange portion, and the fitting portion provided in the flange portion has a substantially U-shaped cross section. This is a configuration in which an insulating member piece having a plate shape and an insulating member piece having a substantially plate-like cross section are fitted.

  According to a sixth aspect of the present invention, the insulating member comprises two insulating member pieces having a substantially L-shaped cross section each having a base end portion and a connecting portion, and one insulating member piece having a substantially L-shaped cross section. The connecting portion is configured to be fitted so as to cover the side surface of the base end portion of the other insulating member piece having a substantially L-shaped cross section.

  The invention according to claim 7 is configured such that the insulating member pieces each having a substantially L-shaped cross section are movably connected in the thickness direction of the stator core.

  In the invention according to claim 8, the plate thickness of the base end portion of the insulating member piece having a substantially L-shaped cross section is larger than the plate thickness of the connecting portion of the insulating member piece having a substantially L-shaped cross section.

  In the invention according to claim 9, the insulating member piece having a substantially L-shaped cross section includes a flange portion, and each of the insulating member pieces having a substantially L-shaped cross section is fitted by a fitting portion provided on the flange portion. It is the structure to do.

  According to the first aspect of the present invention, an annular stator core having a plurality of magnetic pole teeth arranged at intervals in the circumferential direction, a coil wound around each of the magnetic pole teeth of the stator core, a coil and each magnetic pole tooth And a base end portion that covers the end face of the magnetic pole teeth in the thickness direction of the stator core (the direction in which the magnetic steel sheets are laminated), and a side surface of the magnetic pole teeth that extends from both sides of the base end portion along the thickness direction of the stator core. It is a cylindrical insulating member having a connecting portion to cover, and the insulating member is composed of two insulating member pieces that are fitted together, and the insulating member pieces are fitted to each other so that the connecting portion covers the side surface of the base end portion ( In this configuration, a thick portion (connecting portion) is formed on the insulating member disposed on the opposing surface of the adjacent stator unit while ensuring ease of assembly by the split insulating member. Therefore, it is possible to increase the number of turns of the coil and the coil diameter without changing various dimensions such as dimensions and intervals of the magnetic teeth, that is, to improve the space factor, and to generate torque or generated output of the rotating electrical machine, There exists an effect that electric power or efficiency can be improved. In addition, since the interval between adjacent magnetic pole teeth can be shortened without reducing the number of coil turns and coil diameter, a compact rotating electrical machine can be configured while maintaining the generated torque or generated output, power or efficiency. There is an effect that can be done.

  In the invention according to claim 2, the insulating member is an insulating member piece having a substantially U-shaped cross section having one of the base end portions and a connecting portion, and an insulating member piece having a substantially cross-sectional shape having the other base end portion. The connecting portions on both sides of the insulating member piece having a substantially U-shaped cross section are configured to be fitted so as to cover the side surfaces on both sides of the base end portion of the insulating member piece having a substantially plate-shaped cross section. As in Item 1, the thickness of the magnetic teeth is not formed because a thick portion (connecting portion) is not formed on the insulating member disposed on the facing surface of the adjacent stator unit while ensuring ease of assembly by the split insulating member. Increase the number of turns of the coil and the coil diameter without changing various dimensions such as and spacing, that is, the space factor can be improved, and the generated torque or generated output and power or efficiency of the rotating electrical machine can be improved There is an effect that can be done. In addition, since the interval between adjacent magnetic pole teeth can be shortened without reducing the number of coil turns and coil diameter, a compact rotating electrical machine can be configured while maintaining the generated torque or generated output, power or efficiency. There is an effect that can be done.

  In the invention according to claim 3, the insulating member piece having a substantially U-shaped cross section and the insulating member piece having a substantially plate-like cross section are fitted so as to be movable in the thickness direction of the stator core (the lamination direction of the magnetic steel plates). By adopting the configuration, there is an effect that it is possible to absorb the variation in height in the stacking direction of the magnetic pole teeth when a plurality of magnetic steel plates are stacked.

  In the invention according to claim 4, the plate thickness of the base end portion of the insulating member piece having a substantially plate-like cross section is larger than the plate thickness of the connecting portion of the insulating member piece having a substantially U-shaped cross section. The range of the connecting portion of the insulating member piece having a substantially U-shaped cross section covering the side surface of the base end portion of the insulating member piece having a substantially plate-shaped cross section is widened, and the thickness direction of the stator core (magnetic steel plate) This increases the width that can be moved in the laminating direction), and thus has an effect of widening the range of absorbing the variation in the height of the magnetic teeth in the laminating direction when a plurality of magnetic steel plates are laminated.

  In the invention according to claim 5, the insulating member piece having a substantially U-shaped cross section and the insulating member piece having a substantially plate-shaped cross section each include a flange portion, and a substantially U-shaped cross section at a fitting portion provided on the flange portion. With the configuration in which the insulating member piece having the shape of a plate and the insulating member piece having a substantially plate-like cross section are fitted, the insulating member disposed on the opposing surface of the adjacent stator unit does not form a thick portion (connecting portion), There exists an effect which enables fitting of the insulating member piece of a cross-sectional substantially U shape, and the insulating member piece of a cross-sectional substantially plate shape.

  In the invention according to claim 6, the insulating member is composed of two insulating member pieces having a substantially L-shaped cross section each having a base end portion and a connecting portion, and one insulating member piece having a substantially L-shaped cross section. The connecting portion is configured to be fitted so as to cover the side surface of the base end portion of the other insulating member piece having a substantially L-shaped cross section, so that it is easy to assemble with the split insulating member as in the first aspect. In addition, since the thick part (connecting part) is not formed on the insulating member disposed on the opposing surface of the adjacent stator unit while ensuring the reliability, the dimensions of the coil teeth can be changed without changing various dimensions such as the dimensions and spacing of the magnetic teeth. The effect is that the number of turns and the coil diameter can be increased, that is, the space factor can be improved, and the generated torque or generated output, electric power or efficiency of the rotating electrical machine can be improved. In addition, since the interval between adjacent magnetic pole teeth can be shortened without reducing the number of coil turns and coil diameter, a compact rotating electrical machine can be configured while maintaining the generated torque or generated output, power or efficiency. There is an effect that can be done.

  Further, in the invention according to claim 7, a plurality of insulating member pieces each having a substantially L-shaped cross section are movably fitted in the thickness direction of the stator core (the direction in which the magnetic steel plates are laminated). It is possible to absorb the variation in the height of the magnetic teeth in the stacking direction when the magnetic steel sheets are stacked.

  In the invention according to claim 8, the plate thickness of the base end portion of the insulating member piece having a substantially L-shaped cross section is configured to be larger than the plate thickness of the connecting portion of the insulating member piece having a substantially L-shaped cross section. Thus, a range (connection (fitting) range) in which the connecting portion of the insulating member piece having the substantially L-shaped cross section covers the side surface of the base end portion of the other insulating member piece having the substantially L-shaped cross section is increased. Since the width that can be moved in the thickness direction (the direction in which the magnetic steel plates are laminated) increases, the effect of widening the range of absorbing the variation in the height in the direction of lamination of the magnetic pole teeth when a plurality of magnetic steel plates are laminated is exhibited.

  In the invention according to claim 9, the insulating member piece having a substantially L-shaped cross section includes a flange portion, and each of the insulating member pieces having a substantially L-shaped cross section is fitted by a fitting portion provided in the flange portion. By adopting such a configuration, the insulating member disposed on the opposing surface of the adjacent stator unit does not form a thick portion (connecting portion), and one insulating member piece having a substantially L-shaped cross section and the other cross section having approximately L There exists an effect which enables fitting of a character-shaped insulating member piece.

  Hereinafter, the stator of the rotating electrical machine according to the first embodiment of the present invention will be described in detail with reference to FIGS.

  FIG. 1 is a plan view partially showing a stator 1 of a rotating electrical machine according to a first embodiment of the present invention. In the stator core 2, a plurality of magnetic teeth 4 held by the core holder 3 are arranged at intervals in the circumferential direction.

  FIG. 2 is a cross-sectional view taken along the line II of the stator 1 according to the first embodiment of the present invention. A coil 6 is wound around the magnetic pole teeth 4 with an insulating member 5 interposed therebetween. The insulating member 5 is provided with reinforcing ribs 7 and 8 for the purpose of improving the bending strength of the insulating member 5. Each magnetic tooth 4 is formed by laminating a plurality of magnetic steel plates 9.

  FIG. 3 is an exploded perspective view showing the stator unit 10 constituting the stator 1 according to the first embodiment of the present invention. The stator unit 10 includes a magnetic pole tooth 4 and an insulating member 5. The insulating member 5 includes an insulating member piece 13 having a substantially U-shaped cross section having a base end portion 11a and connecting portions 12a and 12b, and an insulating member piece 14 having a substantially plate shaped cross section having a base end portion 11b. The connecting portions 12a and 12b on both sides of the U-shaped insulating member piece 13 are connected so as to cover the side surfaces on both sides of the base end portion 11b of the insulating member piece 14 having a substantially plate-like cross section. The insulating member piece 13 having a substantially U-shaped cross section and the insulating member piece 14 having a substantially plate-like cross section are movable in the stacking direction of the magnetic steel plates 9 (the thickness direction of the stator core 2). The insulating member piece 13 having a substantially U-shaped cross section and the insulating member piece 14 having a substantially plate-shaped cross section each include a flange portion 15, and the insulating member piece 13 having a substantially U-shaped cross section is formed by a fitting portion 16 provided on the flange portion 15. And the insulating member piece 14 having a substantially plate-like cross section is fitted.

  FIG. 4 is a II-II cross-sectional view of the stator 1 according to the first embodiment of the present invention, and schematically shows adjacent stators. The magnetic pole teeth 4 are covered with the connecting portions 12a and 12b on both sides of the insulating member piece 13 having a substantially U-shaped cross section and the base end portion 11b of the insulating member piece 14 having a substantially plate-like cross section, and have insulation properties with respect to the coil 6. Secured.

  FIG. 5 is an enlarged view of part A of the stator 1 according to the first embodiment of the present invention. The plate thickness a of the base end portion 11b of the insulating member piece 14 having a substantially plate-like cross section is larger than the plate thickness b of the connecting portions 12a and 12b (not shown) of the insulating member piece 13 having a substantially U-shaped cross section. . The connecting portions 12a on both sides of the insulating member piece 13 having a substantially U-shaped cross section cover the side surface of the base end portion 11b of the insulating member piece 14 having a substantially plate-shaped cross section, and the lamination direction of the magnetic steel plates 9 (the thickness direction of the stator core 2) ) To be movable.

  In the rotary electric machine having the stator 1 according to the first embodiment of the present invention, the insulating member 5 includes the base member 11a and the insulating member piece 13 having a substantially U-shaped cross section having the connecting portions 12a and 12b, and the base end portion. Since it is a split type composed of the insulating member piece 14 having a substantially plate-like cross section having 11b, the ease of assembly of the stator unit 10 can be ensured. In addition, since the thick portions (connecting portions) are not formed in the connecting portions 12a and 12b of the insulating member 5 arranged on the opposing surfaces of the adjacent stator units 10, the dimensions and intervals of the magnetic pole teeth 4 are changed. Without increasing the number of turns of the coil 6 and the coil diameter, that is, the space factor can be improved, and there is an effect that the generated torque or generated output, electric power or efficiency of the rotating electrical machine can be improved. . Further, since the interval between the adjacent magnetic pole teeth 4 can be shortened without reducing the number of turns of the coil 6 and the coil diameter, a small rotating electric machine can be maintained while maintaining the generated torque or generated output, power or efficiency. Can be configured.

  The insulating member piece 13 having a substantially U-shaped cross section and the insulating member piece 14 having a substantially plate-like cross section are fitted (coupled) so as to be movable in the stacking direction of the magnetic steel plates 9 (the thickness direction of the stator core 2). By doing so, the variation in the height of the magnetic teeth 4 formed by laminating a plurality of magnetic steel plates 9 can be absorbed.

  Further, the plate thickness a of the base end portion 11b of the insulating member piece 14 having a substantially plate-like cross section is larger than the plate thickness b of the connecting portions 12a and 12b of the insulating member piece 13 having a substantially U-shaped cross section. The range (connection (fitting) range) in which the connecting portions 12a, 12b of the letter-shaped insulating member piece 13 cover the side surface of the base end portion 11b of the insulating member piece 14 having a substantially plate-like cross section is widened. 9 increases the width that can be moved in the stacking direction of 9 (thickness direction of the stator core 2), so that the range in which the variation in height in the stacking direction of the magnetic teeth 4 when the plurality of magnetic steel plates 9 are stacked is absorbed.

  The insulating member piece 13 having a substantially U-shaped cross section and the insulating member piece 14 having a substantially plate-shaped cross section each include a flange portion 15, and an insulating portion having a substantially U-shaped cross section is provided by a fitting portion 16 provided on each flange portion 15. Since the member piece 13 and the insulating member piece 14 having a substantially plate-like cross section are fitted, the insulating members 12a and 12b arranged on the opposing surfaces of the adjacent stator units 10 are not formed with thick portions (connecting portions). The substantially U-shaped insulating member piece 13 and the substantially plate-shaped insulating member piece 14 can be fitted together.

  Next, a stator for a rotating electrical machine according to a second embodiment of the present invention will be described in detail with reference to FIGS. The same parts as those of the first embodiment will be described using the same reference numerals.

  FIG. 6 is an exploded perspective view showing the stator unit 21 constituting the stator 20 according to the second embodiment of the present invention. The stator unit 21 includes the magnetic pole teeth 4 and the insulating member 5. The insulating member 5 includes an insulating member piece 24 having a substantially L-shaped cross section having a base end portion 22a and a connecting portion 23a, and an insulating member piece 24 having a substantially L-shaped cross section having a base end portion 22b and a connecting portion 23b. The connecting portions 23a and 23b are connected (fitted) so as to cover the side surfaces of the base end portions 22b and 22a, respectively. The insulating member pieces 24 and 25 having a substantially L-shaped cross section are configured to be movable in the stacking direction of the magnetic steel plates 9 of the magnetic teeth 4 (the thickness direction of the stator core 2). The insulating member pieces 24 and 25 having a substantially L-shaped cross section each include a flange portion 15, and the insulating member pieces 24 and 25 having a substantially L-shaped cross section are fitted by a fitting portion 16 provided on the flange portion 15. To do.

  FIG. 7 is a II-II cross-sectional view of the stator 20 according to the second embodiment of the present invention, and schematically shows the adjacent stator 20. The magnetic pole teeth 4 are covered with a substantially L-shaped insulating member piece 24 having a base end portion 22a and a connecting portion 23a, and an insulating member piece 25 having a substantially L-shaped cross section having a base end portion 22b and a connecting portion 23b. Insulation with the coil 6 is ensured. The plate | board thickness of base end part 22a, 22b is larger than connection part 23a, 23b.

  In the stator 20 of the rotating electric machine according to the second embodiment of the present invention, the insulating member 5 includes an insulating member piece 24 having a substantially L-shaped cross section having a base end portion 22a and a connecting portion 23a, and a base end portion 22b and a connecting portion. Since it is a split type composed of the insulating member piece 25 having a substantially L-shaped cross section having 23b, the ease of assembly of the stator unit 21 can be ensured. In addition, since the thick portions (connecting portions) are not formed in the connecting portions 23a and 23b of the insulating member 5 arranged on the opposing surfaces of the adjacent stator units 21, the dimensions and intervals of the magnetic pole teeth 4 are changed. Without increasing the number of turns of the coil 6 and the coil diameter, that is, the space factor can be improved, and there is an effect that the generated torque or generated output, electric power or efficiency of the rotating electrical machine can be improved. . Further, since the interval between the adjacent magnetic pole teeth 4 can be shortened without reducing the number of turns of the coil 6 and the coil diameter, a small rotating electric machine can be maintained while maintaining the generated torque or generated output, power or efficiency. Can be configured.

  In addition, each of the insulating member pieces 24 and 25 having a substantially L-shaped cross section is configured to be movably connected in the stacking direction of the magnetic steel plates 9 (the thickness direction of the stator core 2). Variations in the height of the magnetic teeth 4 in the stacking direction when stacked can be absorbed.

  Moreover, since the plate | board thickness of the base end parts 22a and 22b of the insulating member pieces 24 and 25 of a substantially L-shaped cross section is larger than the connection parts 23a and 23b, the connection parts 23a and 23b are side surfaces of the base end parts 22a and 22b. Since the width (the range of connection (fitting)) that covers the surface of the magnetic teeth 4 is increased and the width in which the magnetic teeth 4 can move in the stacking direction of the magnetic steel plates 9 (the thickness direction of the stator core 2) increases, a plurality of magnetic steel plates 9 are stacked. The range in which the variation in the height of the magnetic teeth 4 in the stacking direction is absorbed is widened.

  The insulating member pieces 24 and 25 having a substantially L-shaped cross section each include a flange portion 15, and the insulating member pieces 24 and 25 having a substantially L-shaped cross section are fitted by the fitting portions 16 provided on the flange portion 15. Therefore, the thickened portions (connecting portions) are not formed in the connecting portions 23a and 23b of the insulating members 5 arranged on the opposing surfaces of the adjacent stator units 21, and the insulating member pieces 24 and 25 having a substantially L-shaped cross section are formed. Can be fitted.

It is a top view which shows partially the stator of the rotary electric machine which concerns on the 1st Embodiment of this invention. It is II sectional drawing of the stator which concerns on the 1st Embodiment of this invention. It is a disassembled perspective view which shows the stator unit which comprises the stator which concerns on the 1st Embodiment of this invention. FIG. 2 is a cross-sectional view of the stator according to the first embodiment of the present invention, schematically showing adjacent stators. It is an A section enlarged view of a stator concerning a 1st embodiment of the present invention. It is a disassembled perspective view which shows the stator unit which comprises the stator which concerns on the 2nd Embodiment of this invention. It is II-II sectional drawing of the stator which concerns on the 2nd Embodiment of this invention, and shows an adjacent stator typically. It is sectional drawing of the stator of a prior art, and shows an adjacent stator typically.

Explanation of symbols

1 Stator (first embodiment)
2 Stator Core 4 Magnetic Teeth 5 Insulating Member 6 Coil 11a Base End Part 11b Base End Part 12a Connection Part 12b Connection Part 13 Insulation Member Piece with a U-Shape in Section 14 Insulation Member Piece with a Section in Substrate Shape a Thickness of the base end of the member piece b Thickness of the connecting portion of the insulating member piece having a substantially U-shaped cross section

Claims (9)

An annular stator core having a plurality of magnetic pole teeth spaced apart in the circumferential direction;
A coil wound around each of the magnetic pole teeth of the stator core;
A base end portion disposed between the coil and each of the magnetic pole teeth and covering an end face of the tooth in the thickness direction of the stator core; and the teeth along the thickness direction of the stator core extending from both sides of the base end portion A cylindrical insulating member provided with a connecting portion that covers the side surface of
In the stator of a rotating electrical machine composed of
The insulating member is composed of two insulating member pieces fitted to each other,
The insulating member pieces are fitted to each other so that the connecting portion covers a side surface of the base end portion,
A stator for a rotating electric machine. The insulating member is composed of an insulating member piece having a substantially U-shaped cross section having one of the base end portions and the connecting portion, and an insulating member piece having a substantially plate-shaped cross section having the other of the base end portions,
The connecting portions on both sides of the insulating member piece having a substantially U-shaped cross section are fitted so as to cover side surfaces on both sides of the base end portion of the insulating member piece having a substantially plate-like cross section,
The stator for a rotating electrical machine according to claim 1.   The stator of a rotating electrical machine according to claim 2, wherein the insulating member piece having a substantially U-shaped cross section and the insulating member piece having a substantially plate-like cross section are movably fitted in a thickness direction of the stator core. .   4. The plate thickness of the base end portion of the insulating member piece having a substantially plate-like cross section is larger than the plate thickness of the connecting portion of the insulating member piece having a substantially U-shaped cross section. The stator of the rotary electric machine as described in any one of these.   The insulating member piece having a substantially U-shaped cross section and the insulating member piece having a substantially plate-shaped cross section each include a flange portion, and the insulating member piece having a substantially U-shaped cross section and a cross-section at a fitting portion provided on the flange portion. The stator for a rotating electrical machine according to any one of claims 2 to 4, wherein the substantially plate-like insulating member piece is fitted. The insulating member comprises two insulating member pieces having a substantially L-shaped cross section each having the base end portion and the connecting portion,
The connecting portion of one insulating member piece having a substantially L-shaped cross section is fitted to cover the side surface of the base end portion of the other insulating member piece having a substantially L-shaped cross section,
The stator for a rotating electrical machine according to claim 1.   The stator for a rotating electrical machine according to claim 6, wherein each of the insulating member pieces having a substantially L-shaped cross section is movably fitted in a thickness direction of the stator core.   The thickness of the base end portion of the insulating member piece having a substantially L-shaped cross section is larger than the thickness of the connecting portion of the insulating member piece having a substantially L-shaped cross section. Item 8. A stator of a rotating electrical machine according to any one of items 7 to 9.   The insulating member piece having a substantially L-shaped cross section includes a flange portion, and each of the insulating member pieces having a substantially L-shaped cross section is fitted in a fitting portion provided in the flange portion. The stator of the rotary electric machine as described in any one of thru | or 8.

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