CN112236925B - Stator of rotating electrical machine and rotating electrical machine - Google Patents
Stator of rotating electrical machine and rotating electrical machine Download PDFInfo
- Publication number
- CN112236925B CN112236925B CN201980016353.1A CN201980016353A CN112236925B CN 112236925 B CN112236925 B CN 112236925B CN 201980016353 A CN201980016353 A CN 201980016353A CN 112236925 B CN112236925 B CN 112236925B
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- core
- yoke
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- 239000012212 insulator Substances 0.000 claims abstract description 164
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 26
- 230000002093 peripheral effect Effects 0.000 claims abstract description 17
- 238000009413 insulation Methods 0.000 claims abstract description 6
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000004804 winding Methods 0.000 description 7
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The device is provided with: an iron core (10) having a yoke portion (111) having a recess (117) in an outer peripheral surface (12) and a plurality of teeth (112) having a shoe portion (114); and a coil unit (11) wound around each tooth unit (112) via a first insulator unit (130) and a second insulator unit (120), wherein the second insulator unit (120) is provided in a slot (113) between the tooth units (112), has a sheet-like shape, has insulation, and has protruding sections (121) protruding from both ends in the axial direction (Y) of the core (10), and the first insulator unit (130) is provided with: first protruding parts (132) provided at both ends of the core (10) in the axial direction (Y), having insulation properties, and being in contact with the protruding parts (121) and inserted into the recessed parts (117); and a second protrusion (133) that sandwiches the second insulator section (120) with the side surface (41) of the outer side (X1) in the radial direction (X) of the boot section (114).
Description
Technical Field
The present application relates to a stator of a rotating electric machine and a rotating electric machine capable of preventing an increase in core loss and improving performance.
Background
In a conventional rotating electrical machine, there has been proposed a rotating electrical machine comprising an iron core having a plurality of slots for accommodating windings, an insulator disposed on both axial end surfaces of the iron core to electrically insulate between the windings and iron core teeth, and slot insulating paper inserted into the slots to electrically insulate between the windings and an inner peripheral surface of the iron core, wherein the insulator integrally has a wall portion that electrically insulates the windings from the iron core and extends into the slots, wherein the slots have axial end portions larger than intermediate portions by a size that accommodates the insulator wall portion, that is, the axial end portions are smaller than the intermediate portions in the iron core teeth, and wherein the slot insulating paper is disposed so as to overlap surfaces of the insulator on the winding sides of the wall portions at both axial end portions, thereby eliminating a space of the insulator wall portion that reduces a winding space in the slots and increasing a wire cross-sectional area (for example, see patent document 1).
In addition, another conventional rotating electrical machine has been proposed in which a structure substantially similar to that of patent document 1 is used as a split core. Further, it has been proposed that a part of the cutouts be provided in the axial direction of the core teeth at both ends thereof in a smaller dimension than the middle portion, and that the positions of the insulators with respect to the cutouts be thickened can contribute to improvement in strength and positioning (for example, refer to patent document 2).
Prior art literature
Patent literature
Patent document 1: japanese patent laid-open No. 2001-112205
Patent document 2: japanese patent laid-open No. 2017-103850
Disclosure of Invention
Problems to be solved by the invention
In the conventional stator core of the rotating electrical machine, since the circumferential width of both end portions of the teeth in the axial direction is made narrower than the circumferential width of the intermediate portion in order to accommodate the insulator wall portion, there is a problem in that the core loss increases as compared with the core having the same circumferential width as the intermediate portion in the axial direction, resulting in a decrease in the performance of the rotating electrical machine. This is because the shorter the axial length of the core, the more likely the performance is affected. Further, since the shapes of the axial end portions and the intermediate portion of the teeth are different, a die and a process for manufacturing the iron core are increased, and there is a problem that the cost of the iron core is increased.
The present application has been made to solve the above-described problems, and an object thereof is to provide a stator of a rotating electrical machine and a rotating electrical machine capable of preventing an increase in core loss and improving performance.
Means for solving the problems
The application discloses a stator of a rotating electrical machine, wherein,
The stator of the rotating electric machine comprises a core, a first insulator part, a second insulator part and a coil part,
The iron core has: a yoke in which at least 1 yoke portion is arranged in the circumferential direction and is formed in a ring shape; and a tooth portion protruding radially inward on an inner periphery of a radially inward side of the yoke portion, the tooth portion having shoe portions formed so as to protrude in the circumferential direction on both sides of a circumferential direction of a radially inward tip end;
The first insulators are respectively arranged at two ends along the axial direction of the central shaft of the iron core and have insulativity;
The second insulator portion is provided in a sheet-like shape on side surfaces of both ends of the tooth portion in a circumferential direction, an inner peripheral surface of the yoke portion extending from the side surfaces, and a radially outer side surface of each of the shoe portions, and has insulation properties;
The coil part is wound around the tooth part through the first insulator part and the second insulator part,
Recesses are provided on the outer peripheral surface of the yoke portion on the outer side in the radial direction at both axial ends of the yoke portion,
The second insulator portion has protruding portions formed protruding from both ends of the core in an axial direction thereof,
The first insulator portion has: a first protrusion portion that contacts the protruding portion of the second insulator portion and is inserted into the recess portion of the core; and a second protrusion portion that sandwiches the second insulator portion with a radially outer side surface of each of the shoe portions.
In addition, the rotating electrical machine of the present disclosure, wherein,
The rotating electrical machine is provided with:
a stator of a rotating electrical machine as described above;
a frame that disposes the stator radially inside; and
A rotor disposed radially inward of the stator and rotatably supported by the frame.
Effects of the invention
According to the stator of the rotating electrical machine and the rotating electrical machine disclosed by the application, the increase of the iron loss can be prevented, and the performance can be improved.
Drawings
Fig. 1 is a plan view showing the structure of a stator of a rotary electric machine according to embodiment 1.
Fig. 2 is a perspective view showing the structure of the split core, the first insulator, and the second insulator of the stator shown in fig. 1.
Fig. 3 is a perspective view showing a structure of the split core and the second insulator shown in fig. 2.
Fig. 4 is a perspective view showing a structure of a first insulator portion provided in the split core shown in fig. 2.
Fig. 5 is a plan view showing the structure of the first insulator section shown in fig. 4.
Fig. 6 is a partially enlarged perspective view showing the structure of the split core, the first insulator part, and the second insulator part shown in fig. 2.
Fig. 7 is a partially enlarged perspective view showing the structure of the split core and the first insulator shown in fig. 2.
Fig. 8 is a plan view showing a structure of a rotary electric machine using the stator shown in fig. 1.
Fig. 9 is a perspective view illustrating a method of manufacturing the stator shown in fig. 2.
Fig. 10 is a perspective view illustrating a method of manufacturing the stator shown in fig. 2.
Fig. 11 is a perspective view showing another configuration of a first insulator of a stator of a rotary electric machine according to embodiment 1.
Fig. 12 is a perspective view showing another configuration of a first insulator of a stator of a rotary electric machine according to embodiment 1.
Fig. 13 is a partially enlarged perspective view showing the structure of the split core, the first insulator, and the second insulator of the stator of the rotary electric machine according to embodiment 2.
Fig. 14 is a plan view showing a structure of a first insulator portion provided in the split core shown in fig. 13.
Detailed Description
In the following description, each direction in the rotating electrical machine is denoted as a circumferential direction Z, an axial direction Y, a radial direction X, an outer side X1 of the radial direction X, and an inner side X2 of the radial direction X, respectively, which are directions along the rotating shaft of the rotating electrical machine. Therefore, in other parts such as the stator of the rotating electric machine, the description will be given with these directions as references.
Embodiment 1
Fig. 1 is a plan view showing the structure of a stator 100 of a rotary electric machine 1 according to embodiment 1. Fig. 2 is a perspective view showing a structure in which the first insulator 130 and the second insulator 120 are provided on the split cores 110 of the stator 100 shown in fig. 1. Fig. 3 is a perspective view for explaining a state in which the second insulator portion 120 is provided on the split core 110 shown in fig. 2. Fig. 4 is a perspective view showing the structure of the first insulator 130 shown in fig. 2. Fig. 5 is a plan view showing a structure seen from the direction of arrow a of the first insulator 130 shown in fig. 4.
Fig. 6 is a partially enlarged perspective view showing an upper structure on a paper surface in the axial direction Y of the structure in which the first insulator 130 and the second insulator 120 are provided on the split core 110 shown in fig. 2. Fig. 7 is a partially enlarged perspective view showing a structure of the split core 110 shown in fig. 2 on the lower side in the plane of the paper in the axial direction Y of the structure in which the first insulator 130 and the second insulator 120 are provided. In fig. 7, the split cores 110 are shown in a state where a part of the split cores are stacked in the axial direction Y. Fig. 8 is a plan view showing a structure of a rotary electric machine 1 using the stator 100 shown in fig. 1. For convenience, the diagrams other than fig. 8 show the state before the coil portion 9 is formed.
Fig. 9 and 10 are perspective views illustrating a method of manufacturing the split core 110 of the stator 100 shown in fig. 2, in which the first insulator 130 and the second insulator 120 are provided. Fig. 11 and 12 are perspective views showing other configurations of the first insulator 130 of the stator 100 of the rotary electric machine 1 according to embodiment 1.
In fig. 8, the rotary electric machine 1 includes a stator 100 having a coil portion 9 formed therein, a frame 2 having the stator 100 disposed outside X1 in the radial direction X, and a rotor 4 disposed inside X2 in the radial direction X of the stator 100 and rotatably supporting the rotary shaft 3 to the frame 2.
In fig. 1, a stator 100 of the rotating electrical machine 1 includes an iron core 10 and a coil portion 9 (see fig. 8). The iron core 10 includes a yoke 5 formed in a ring shape, and a plurality of teeth 112 formed on an inner peripheral surface 11 of an inner side X2 of the yoke 5 in a radial direction X so as to protrude toward the inner side X2 of the radial direction X at predetermined intervals along a circumferential direction Z. The core 10 is formed by arranging a plurality of divided cores 110 divided in the circumferential direction Z in a ring shape. The iron core 10 is formed by punching an electromagnetic steel sheet, and stacking a plurality of the punched electromagnetic steel sheets in the axial direction Y at a time.
As shown in fig. 3, one split core 110 has one tooth 112 and one yoke 111. Accordingly, the yoke 5 of the core 10 is formed in a ring shape in which a plurality of yoke portions 111 of the split cores 110 are arranged in the circumferential direction Z. Recesses 117 are formed in the outer peripheral surface 12 of the outer side X1 in the radial direction X at both ends in the axial direction Y of the yoke portion 111. The recess 117 is formed for each of the split cores 110. The recess 117 may be formed continuously from one end to the other end in the axial direction Y of the outer peripheral surface 12 of the yoke portion 111 of the split core 110. The recess 117 is not limited to this shape, and a case may be considered in which the recess 117 is formed in a hole shape having the same function as the recess 117.
The tooth 112 has shoes 114 formed so as to protrude in the circumferential direction Z on both sides of the circumferential direction Z of the tip end of the inner side X2 in the radial direction X. Slots 113 (see fig. 1) for forming the coil portions 9 are formed between the divided cores 110 adjacent in the circumferential direction Z. The coil portion 9 is formed by winding around each tooth portion 112 with a first insulator portion 130 and a second insulator portion 120, which will be described later, interposed therebetween, and is accommodated in the groove 113.
As shown in fig. 3, the second insulator 120 has insulating properties and is formed in a sheet shape. The second insulator portion 120 is provided on the side surface 21 at both ends in the circumferential direction Z of the tooth portion 112, on the inner peripheral surface 11 of the yoke portion 111 extending from the side surface 21, and on the side surface 41 of the outer side X1 in the radial direction X of each shoe portion 114 in the tooth portion 112. The second insulator 120 may be formed in a sheet shape, for example, of insulating paper or an insulating film. Accordingly, the second insulator 120 is provided in the slot 113, and the split cores 110 are insulated from the coil part 9 in the slot 113. The second insulator 120 is formed to have a length in the axial direction Y longer than that of the split core 110, and has protruding portions 121 protruding from both ends of the split core 110 in the axial direction Y.
As shown in fig. 2, the first insulator portions 130 are provided at both ends of the split core 110 in the axial direction Y, respectively, and have insulation properties. As shown in fig. 4, the first insulator 130 includes a first protrusion 132 inserted into the recess 117 of the split core 110, and a second protrusion 133 sandwiching the second insulator 120 between the first protrusion and the side surface 41 of the outer side X1 of each shoe 114 in the radial direction X.
As shown in fig. 2, the first insulator part 130 is formed to be in contact with the protruding part 121 of the second insulator part 120. In this way, the protruding portion 121 of the second insulator portion 120 is in contact with and overlaps the first insulator portion 130, and this portion is formed as a portion for ensuring electrical insulation performance. In addition, the portion of the first insulator 130 that contacts the second insulator 120 in the axial direction Y is the portion of the protruding portion 121 of the second insulator 120, and the shape of the split core 110 is not affected. Therefore, as shown in the upper drawing on the paper surface of fig. 3, the split cores 110 can all be formed in the same shape from the upper side to the lower side in the axial direction Y.
As shown in fig. 4, the first insulator 130 has a groove 131 corresponding to the sheet-like thickness of the second insulator 120 formed at a portion in contact with the protruding portion 121 of the second insulator 120. To form the groove 131, the width W1 (see fig. 5) of the circumferential direction Z of the tooth 112 of the first insulator 130 is formed to be larger than the width W2 (see fig. 3) of the circumferential direction Z of the tooth 112 by an amount twice the sheet-like thickness of the second insulator 120, that is, the width of the groove 131.
As shown in fig. 6 and 7, the groove 131 serves as a space for accommodating the protruding portion 121 of the second insulator 120. In this way, the protruding portion 121 of the second insulator portion 120 is accommodated in the groove portion 131 of the first insulator portion 130. Further, since both end portions in the axial direction Y of the groove 131 of the first insulator 130 are disposed so as to cover both ends in the axial direction Y of the protruding portion 121, the second insulator 120 can be prevented from being displaced in the axial direction Y.
Further, as shown in fig. 7, the first protrusion 132 of the first insulator 130 is inserted into the recess 117 of the split core 110, and therefore, the arrangement of the first insulator 130 with respect to the split core 110 is restricted in the radial direction X and the circumferential direction Z.
Further, the second protrusion 133 of the first insulator 130 sandwiches the second insulator 120 with the side surface 41 of the outer side X1 of the radial direction X of each shoe 114, and therefore, the arrangement of the second insulator 120 with respect to the split cores 110 is restricted in the circumferential direction Z.
The first insulator 130 is positioned with respect to the split core 110 by inserting the first protrusion 132 into the recess 117 provided in the yoke portion 111 of the split core 110 and fitting the second protrusion 133 so as to cover both ends of the shoe 114.
A method of manufacturing the first insulator 130 and the second insulator 120 provided on the split cores 110 of the stator 100 of the rotating electrical machine 1 according to embodiment 1 configured as described above will be described with reference to fig. 9 and 10. First, as shown in fig. 9, jigs 125 that suck or hold the second insulator section 120 are provided on both sides in the circumferential direction Z of the split core 110 (left side on the paper surface of fig. 9). Then, the jig 125 is pressed so as to approach in the circumferential direction Z of the split core 110 (the state of the right side on the paper surface of fig. 9) so that the second insulator 120 is provided at a predetermined portion of the split core 110.
At this time, as shown in the lower drawing on the paper surface of fig. 3, the bent portion of the second insulator portion 120 is formed of a first curved portion 127 from the side surface 41 of the outer side X1 of the shoe portion 114 in the radial direction X to the side surfaces 21 at both ends in the circumferential direction Z of the tooth portion 112, and a second curved portion 128 from the side surfaces 21 at both ends in the circumferential direction Z of the tooth portion 112 to the inner peripheral surface 11 of the yoke portion 111 extending toward the side surfaces 21. The bending angles of the first bending portion 127 and the second bending portion 128 are set to be the same angle along the respective surfaces shown above of the split core 110 when the second insulator portion 120 is attached to the split core 110.
In order to prevent interference with the first insulator 130 provided in the subsequent step due to the floating of the second insulator 120, the portions of the jig 125 along the teeth 112, yoke 111, and shoe 114 of the split core 110 are formed so as to be opened (largely) by an angle of 1 to 2 degrees with respect to the angles formed by the teeth 112 and yoke 111, and the teeth 112 and shoe 114 of the split core 110.
Next, as shown in fig. 10, the second protrusion 133 of the first insulator 130 is inserted into the cutout 126 of the jig 125 from the axial direction Y, and the second insulator 120 is sandwiched and pressed. After the first insulator 130 is inserted, the jig 125 of the second insulator 120 is opened, and the second insulator 120 and the first insulator 130 are set to the split cores 110.
Thereafter, the wire is wound around the tooth 112 to form the coil 9. Then, the plurality of split cores 110 having the coil portions 9 formed therein are assembled into a ring shape to form the stator 100. Then, the rotor 4 and the stator 100 are disposed in the frame 2 to form the rotary electric machine 1 (fig. 8).
Other configurations than the example of the first insulator 130 shown in fig. 4 may be used to explain the example. As shown in fig. 11, a first taper 136 may be formed in the first protrusion 132 of the first insulator 130 so as to taper in a direction away from the first insulator 130. When formed in this manner, the insertion of the yoke portion 111 of the first protrusion 132 into the recess 117 is improved.
As shown in fig. 12, a second taper portion 138 may be formed in the second projection portion 133 of the first insulator 130 so as to taper in a direction away from the first insulator 130. By forming in this manner, interference between the second insulator 120 and the second protrusion 133 due to warpage, turning-up, or the like of the second insulator 120 can be suppressed, and the insertion performance can be improved.
Since embodiment 1 is formed as described above, it is not necessary to form the split core so that the width in the circumferential direction of the axial ends is narrower than the width in the circumferential direction of the axial middle as in the conventional form. Therefore, according to embodiment 1, the volume of the split cores is not reduced, and an increase in core loss can be prevented.
Further, according to embodiment 1, since the split cores can be formed in the same shape in the axial direction, the split cores are not formed into a plurality of shapes as in the conventional art, and therefore, an increase in mold cost and manufacturing cost can be prevented. Further, since the portion corresponding to the first insulator portion is not formed so as to extend into the groove in the axial direction as in the conventional case, according to embodiment 1, the space in the groove can be reliably ensured, and the reduction of the duty factor of the coil portion can be prevented.
According to the stator of the rotating electrical machine of embodiment 1 configured as described above,
Since the stator of the rotating electrical machine includes the core, the first insulator portion, the second insulator portion and the coil portion,
The iron core has: a yoke in which at least 1 yoke portion is arranged in the circumferential direction and is formed in a ring shape; and a tooth portion protruding radially inward from an inner periphery of a radially inward side of the yoke portion, the tooth portion having boots formed so as to protrude in a circumferential direction on both sides of a circumferential direction of a radially inward tip;
the first insulators are respectively arranged at two ends along the axial direction of the central shaft of the iron core and have insulativity;
The second insulator portion is provided in a sheet-like shape on side surfaces of both ends of the tooth portion in the circumferential direction, on an inner peripheral surface of the yoke portion extending from the side surfaces, and on a side surface of an outer side of each shoe portion in the radial direction, and has insulation properties;
the coil part is wound around the tooth part via the first insulator part and the second insulator part,
Recesses are formed in the outer peripheral surfaces of the yoke portion on the outer sides in the radial direction at both axial ends of the yoke portion,
The second insulator portion has protruding portions formed protruding from both ends of the core in the axial direction,
The first insulator section includes: a first protrusion portion which is in contact with the protruding portion of the second insulator portion and is inserted into the recess portion of the core; and a second protrusion portion which is provided with the second insulator portion interposed between the second protrusion portion and a radially outer side surface of each of the shoe portions,
Therefore, the stator having improved performance can be obtained while preventing an increase in core loss.
In this way, the core slot can be configured such that there is no penetration of the wall surface or the like of the first insulator portion, which reduces the space for accommodating the coil portion. Therefore, the iron cores can be formed in the same size from the upper side to the lower side in the axial direction. As a result, there is no volume reduction of the iron core, and an increase in the iron loss can be prevented, thereby improving the performance of the rotating electrical machine. This is effective particularly in a model in which the length of the core in the axial direction is short. In addition, since the resin material used for the wall surface of the groove of the first insulator portion is not required to be intruded, there is an effect of reducing the material cost.
Further, since the first protrusion of the first insulator is formed with the first tapered portion that tapers in a direction away from the first insulator, the insertion of the yoke portion of the first protrusion into the recess can be improved, and a stator excellent in positional accuracy and assembly accuracy and workability can be obtained.
Further, since the second protrusion of the first insulator is formed with the second tapered portion tapered in a direction away from the first insulator, interference between the second insulator and the second protrusion can be suppressed, and warpage or turning up of the second insulator can be prevented, so that a stator excellent in insertion performance and workability can be obtained.
Further, since the first insulator portion is provided with the groove portion having a sheet-like thickness of the second insulator portion at a portion in contact with the protruding portion of the second insulator portion, a stator in which the second insulator portion is prevented from being displaced in the axial direction can be obtained.
The core is formed of a divided core divided into a plurality of pieces in the circumferential direction,
The concave parts are formed on the divided iron cores respectively,
The first insulator is formed with the first protrusions inserted into the respective recesses, respectively, so that a stator capable of holding the first insulator for each divided core can be obtained.
Further, since the stator of the rotating electrical machine described above, the frame that positions the stator radially inward, and the rotor rotatably supported by the frame are provided, a stator excellent in performance and, further, a rotating electrical machine excellent in performance can be obtained.
Embodiment 2
Fig. 13 is a partially enlarged perspective view showing an upper structure in the axial direction Y of the structure in which the first insulator 130 and the second insulator 120 are provided on the split cores 110 of the stator 100 of the rotating electrical machine 1 according to embodiment 2. Fig. 14 is a plan view showing a structure of the first insulator 130 provided in the split core 110 shown in fig. 13. In the drawings, the same portions as those in embodiment 1 are denoted by the same reference numerals, and description thereof is omitted.
In embodiment 1, the example in which the groove 131 is formed in the first insulator 130 that houses the protruding portion 121 of the second insulator 120 is shown, but in embodiment 2, an example in which the groove 131 is not formed is described. The width W3 (see fig. 14) of the teeth 112 of the first insulator 130 in the circumferential direction Z is formed to be the same as the width W2 (see fig. 3) of the teeth 112 in the circumferential direction Z. However, a groove 131 for sandwiching the second insulator 120 is formed on the inner side X2 of the second protrusion 133 in the radial direction X.
According to embodiment 2, the second insulator 120, the first insulator 130, and the split cores 110 are fixed by an adhesive, a double-sided tape, or the like. Other shapes and manufacturing methods are the same as those of embodiment 1, and therefore, description thereof will be omitted.
According to the stator of the rotating electrical machine of embodiment 2 configured as described above, it is possible to achieve the same effect as in embodiment 1, and since the circumferential width of the teeth of the first insulator is formed to be the same as the circumferential width of the teeth, no groove is formed in the first insulator, and therefore, the shape of the first insulator can be simplified, and the mold cost can be reduced.
The present disclosure describes various exemplary embodiments and examples, but the various features, modes, and functions described in 1 or more embodiments are not limited to the application of the specific embodiments, and can be applied to the embodiments alone or in various combinations.
Accordingly, numerous modifications not illustrated can be envisaged within the scope of the technology disclosed in the present specification. For example, when at least 1 component is deformed, added, or omitted, the present application further includes a case where at least 1 component is extracted and combined with the components of the other embodiments.
Description of the reference numerals
A rotary electric machine, 2 frames, 3 rotation shafts, 4 rotors, 5 yokes, 9 coil portions, 10 cores, 11 inner peripheral surfaces, 12 outer peripheral surfaces, 21 side surfaces, 41 side surfaces, 100 stators, 110 split cores, 111 yoke portions, 112 tooth portions, 113 slots, 114 shoe portions, 117 concave portions, 120 second insulator portions, 121 protruding portions, 125 jigs, 126 notched portions, 130 first insulator portions, 131 slot portions, 132 first protruding portions, 133 second protruding portions, 136 first tapered portions, 138 second tapered portions, W1 widths, W2 widths, W3 widths, X radial directions, X1 outer sides, X2 inner sides, Y axial directions, and Z circumferential directions.
Claims (6)
1. A stator of a rotary electric machine, wherein,
The stator of the rotating electric machine comprises a core, a first insulator part, a second insulator part and a coil part,
The iron core has: a yoke in which at least 1 yoke portion is arranged in the circumferential direction and is formed in a ring shape; and a tooth portion protruding radially inward on an inner periphery of a radially inward side of the yoke portion, the tooth portion having shoe portions formed so as to protrude in the circumferential direction on both sides of a circumferential direction of a radially inward tip end;
The first insulators are respectively arranged at two ends along the axial direction of the central shaft of the iron core and have insulativity;
The second insulator portion is provided in a sheet-like shape on side surfaces of both ends of the tooth portion in a circumferential direction, an inner peripheral surface of the yoke portion extending from the side surfaces, and a radially outer side surface of each of the shoe portions, and has insulation properties;
The coil part is wound around the tooth part through the first insulator part and the second insulator part,
Slots for forming the coil portions are formed between the teeth portions adjacent in the circumferential direction,
Recesses are provided on the outer peripheral surface of the yoke portion on the outer side in the radial direction at both axial ends of the yoke portion,
The second insulator portion has protruding portions formed protruding from both ends of the core in an axial direction thereof,
The protruding portion is formed by protruding the second insulator portion from both ends in the axial direction of the iron core, provided on the side surface of both ends in the circumferential direction of the tooth portion, on the inner peripheral surface of the yoke portion extending from the side surface, and on the side surface of the radially outer side of each shoe portion,
The first insulator portion is in contact with and coincides with the protruding portion of the second insulator portion, and has: a first protrusion inserted into the recess of the core; and a second protrusion portion which is interposed between the second insulator portion and a radially outer side surface of each of the shoe portions,
The first insulator part is formed with a groove part at a part contacting with the protruding part of the second insulator part, both axial end parts of the groove part cover both axial ends of the protruding part of the second insulator part,
The groove is not provided with the first insulator portion which reduces the space for accommodating the coil portion on the inner peripheral surface side of the yoke portion.
2. The stator of a rotary electric machine according to claim 1, wherein,
A groove portion is formed between the first insulator portion and the radially inner side of the second protrusion portion, the groove portion sandwiching the protruding portion of the second insulator portion.
3. The stator of a rotating electrical machine according to claim 1 or 2, wherein,
The first protrusion of the first insulator portion is formed with a first taper portion that tapers in a direction away from the first insulator portion.
4. The stator of a rotating electrical machine according to claim 1 or 2, wherein,
The second protrusion of the first insulator portion is formed with a second taper portion that tapers in a direction away from the first insulator portion.
5. The stator of a rotating electrical machine according to claim 1 or 2, wherein,
The first insulator portion is formed with a groove portion having a sheet-like thickness of the second insulator portion at a portion in contact with the protruding portion of the second insulator portion.
6. A rotary electric machine, wherein,
The rotating electrical machine is provided with:
A stator of a rotary electric machine as recited in any one of claims 1 to 5;
a frame that disposes the stator radially inside; and
A rotor disposed radially inward of the stator and rotatably supported by the frame.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-106636 | 2018-06-04 | ||
| JP2018106636 | 2018-06-04 | ||
| PCT/JP2019/016170 WO2019235071A1 (en) | 2018-06-04 | 2019-04-15 | Rotating electric machine stator and rotating electric machine |
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| CN112236925A CN112236925A (en) | 2021-01-15 |
| CN112236925B true CN112236925B (en) | 2024-04-26 |
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| CN201980016353.1A Active CN112236925B (en) | 2018-06-04 | 2019-04-15 | Stator of rotating electrical machine and rotating electrical machine |
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| JP (1) | JP6910550B2 (en) |
| CN (1) | CN112236925B (en) |
| WO (1) | WO2019235071A1 (en) |
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| JP7201920B2 (en) * | 2020-03-30 | 2023-01-11 | ダイキン工業株式会社 | A stator and a motor comprising the stator |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001112205A (en) * | 1999-10-08 | 2001-04-20 | Matsushita Electric Ind Co Ltd | Motor and applied equipment |
| JP2006180674A (en) * | 2004-12-24 | 2006-07-06 | Fujitsu General Ltd | Electric motor |
| JP2016082839A (en) * | 2014-10-22 | 2016-05-16 | 株式会社一宮電機 | Brushless motor |
| CN106816979A (en) * | 2015-11-30 | 2017-06-09 | 三菱电机株式会社 | Electric rotating machine |
| CN107251374A (en) * | 2015-02-18 | 2017-10-13 | 三菱电机株式会社 | The stator of electric rotating machine |
| CN107710557A (en) * | 2015-06-25 | 2018-02-16 | 三菱电机株式会社 | The stator of motor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0274137A (en) * | 1988-09-08 | 1990-03-14 | Matsushita Electric Ind Co Ltd | Field assembly |
| JP5938903B2 (en) * | 2011-12-28 | 2016-06-22 | 株式会社富士通ゼネラル | Electric motor |
-
2019
- 2019-04-15 WO PCT/JP2019/016170 patent/WO2019235071A1/en active Application Filing
- 2019-04-15 CN CN201980016353.1A patent/CN112236925B/en active Active
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001112205A (en) * | 1999-10-08 | 2001-04-20 | Matsushita Electric Ind Co Ltd | Motor and applied equipment |
| JP2006180674A (en) * | 2004-12-24 | 2006-07-06 | Fujitsu General Ltd | Electric motor |
| JP2016082839A (en) * | 2014-10-22 | 2016-05-16 | 株式会社一宮電機 | Brushless motor |
| CN107251374A (en) * | 2015-02-18 | 2017-10-13 | 三菱电机株式会社 | The stator of electric rotating machine |
| CN107710557A (en) * | 2015-06-25 | 2018-02-16 | 三菱电机株式会社 | The stator of motor |
| CN106816979A (en) * | 2015-11-30 | 2017-06-09 | 三菱电机株式会社 | Electric rotating machine |
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| Publication number | Publication date |
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| JPWO2019235071A1 (en) | 2020-12-17 |
| CN112236925A (en) | 2021-01-15 |
| WO2019235071A1 (en) | 2019-12-12 |
| JP6910550B2 (en) | 2021-07-28 |
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