JP2000209793A - Rotating electric machine stator - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a rotating electric machine stator that can achieve high efficiency and small machine size. A stator core is composed of a plurality of divided cores including a divided teeth core and a core back core, and a stator winding is wound around the teeth core of the divided core. In the stator of the rotating electric machine, an extended portion extending in the circumferential direction is provided on one of the side surfaces near the outer peripheral side of the core back core portion of the divided core body, and a step portion is provided on the other side, and an inner peripheral side of the extended portion for locking An inclined portion is provided at the tip of the convex portion and the extension portion, a locking concave portion is provided on the outer peripheral side of the step portion, and a bent portion is provided on the outer peripheral side of the core back core portion, and the divided core body is wound. Thereafter, the locking projection and the locking recess are engaged with each other, and the bent portion of the core core portion is bent in the direction of the inclined portion.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotating electric machine, such as a brushless motor, on which concentrated winding is performed, and a structure of a stator thereof.

[0002]

2. Description of the Related Art Medium and small capacity brushless motors and A
In a rotating electric machine such as a C-servo permanent magnet field synchronous motor, copper loss due to stator windings accounts for the highest percentage of the total loss that occurs. Therefore, in order to suppress the temperature rise of the winding part, it is necessary to set the current density of the winding to a low value, which inevitably increases the machine size and the cost.

As means for solving the above problem, a method of dividing a stator core for each pole tooth unit and applying an aligned high-density stator winding to each of the divided cores is disclosed in Japanese Patent Laid-Open Publication No. HEI 9 (1999).
No. 6,105,487.

[0004] In the above prior art, each tooth and each core back are unitarily divided into units (polar tooth units), and concentrated winding is performed on each tooth in each polar tooth unit. The surface is fixed by laser welding. Therefore, the space factor of the coil in the slot can be improved and the copper loss can be reduced, so that the machine size can be reduced.

However, since the stator winding of concentrated winding is applied to each pole tooth unit and the mating surface between the core backs is fixed by laser welding, the laser welded portion causes eddy current loss, There is a problem that a magnetic gap increases in the circumferential mating surface of the core back in the unit of the pole teeth, thereby increasing the magnetic resistance and reducing the copper loss as expected due to the increase in the current. As a method capable of eliminating the laser welding, JP-A-10-
It is disclosed in Japanese Patent Publication No. 174319.

[0006] In the above prior art, each tooth and each core back are formed into a divided iron core integrally divided into pole teeth units,
Protrusions and recesses are provided in the circumferential direction of each of the divided cores, and after these projections and recesses are fitted together, the outer piece of the recess is crimped, whereby a stator that does not require laser welding can be provided.

However, while a mechanically strong stator that does not require laser welding can be obtained, since there are many mating surfaces between adjacent split iron cores, it is difficult to manage the gaps of the mating surfaces and there is a displacement in the axial direction of the laminated iron plate. There is a problem that a short circuit is easily formed on the mating surface, and a desired magnetic flux cannot be obtained. In addition, since it cannot be easily disassembled, there is a problem that the recycling rate is reduced.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object of the present invention is to eliminate the need for laser welding, to simplify the gap management at the mating surface, and to provide a short circuit at the mating surface. It is an object of the present invention to provide a stator for a rotating electric machine which can reduce the formation of the rotating electric machine and can be easily disassembled to improve the recycling rate.

[0009]

SUMMARY OF THE INVENTION The object of the present invention is to provide a stator having a plurality of divided iron cores, each of which comprises a divided tooth core and a core back core, wherein the stator core surrounds the tooth core. In the stator of a rotating electrical machine with a stator winding wound around it, an extended portion extending in the circumferential direction is provided on one of the side surfaces near the outer peripheral side of the core back core portion of the divided core body, and a step portion is provided on the other side and extended. A convex portion for locking on the inner peripheral side of the portion, an inclined portion is provided at the tip of the extension portion, a concave portion for locking is provided on the outer peripheral side of the step portion, and a bent portion is provided on the outer peripheral side of the core back core portion, After winding the divided core body, the locking convex part and the locking concave part are engaged with each other, and the bent part of the core back core part is bent in the direction of the inclined part to constitute the stator. This is achieved by:

[0010] Locking projections and recesses formed in the radial direction on the outermost peripheral side of the core back core and part of the core back core of the split core body are provided, and the split core bodies are circumferentially arranged. The stator core is formed by fitting the locking convex part and concave part and bending the bent part of the core back core part in the direction of the inclined part, so that the gap management is extended and stepped. Since the mating surface is only the extended portion and the step portion, the number of short circuits on the mating surface is reduced. Further, since the locking projection and the concave portion and the bent portion and the inclined portion are arranged close to each other, by removing the extension portion, the split iron core body can be easily disassembled, so that the recycling rate can be improved.

Hereinafter, the features of the present invention will be exemplified. A rotating electric machine in which a stator core is constituted by a plurality of divided cores each including a divided tooth core and a core back core, and a stator winding is wound around the tooth core of the divided core. In the stator, an extended portion extending in the circumferential direction is provided on one of side surfaces near the outer peripheral side of the core back core portion of the divided core body, and a step portion is provided on the other side, and a locking portion is provided on the inner peripheral side of the extended portion. The protrusion, the inclined portion is provided at the tip of the extension portion, and a locking recess is provided on the outer peripheral side of the step portion,
A bent portion is provided on the outer peripheral side of the core back core portion, the locking projection and the locking recess are engaged with each other, and the bent portion of the core back core portion is bent in the direction of the inclined portion. The stator is constituted by being in a state of being placed.

2. A rotating electric machine in which a stator core is constituted by a plurality of divided cores each including a divided tooth core and a core back core, and a stator winding is wound around the tooth core of the divided core. In the stator, the split core body is composed of a first split core body and a second split core body, and is circumferentially formed on both sides of a side surface near the outer peripheral side of the core back core portion of the first split core body. An extended portion is provided, a locking projection is provided on the inner peripheral side of the extended portion, and an inclined portion is provided at a tip of the extended portion, and both sides of the second split core body on the outer peripheral side of the core back core portion. At the outer periphery of the stepped portion, a bent portion is provided at the outer periphery of the core back core portion, and the first and second divided core members are provided with a bent portion. A winding for engaging the locking projection and the locking recess, and It has to constitute the stator of the bent portion of the core portion by a state of bending in the direction of the inclined portion.

3. A rotating electric machine in which a stator core is constituted by a plurality of divided cores each including a divided tooth core and a core back core, and a stator winding is wound around the tooth core of the divided core. In the stator, an extended portion extending in the circumferential direction is provided on one of side surfaces near the outer peripheral side of the core back core portion of the divided core body, and a step portion is provided on the other side, and a locking portion is provided on the inner peripheral side of the extended portion. A convex portion, a locking concave portion provided on the outer peripheral side of the step portion, a winding on the split core body, the press-fitting of the locking convex portion and the locking concave portion. Having configured the stator.

4. A rotating electric machine in which a stator core is constituted by a plurality of divided cores each including a divided tooth core and a core back core, and a stator winding is wound around the tooth core of the divided core. In the stator, the split core body is composed of a first split core body and a second split core body, and is circumferentially formed on both sides of a side surface near the outer peripheral side of the core back core portion of the first split core body. An extended extension portion is provided, a locking projection is provided on the inner peripheral side of the extension portion, and a step portion is provided on both sides of an outer peripheral side of the core back core portion of the second split core body. A locking concave portion is provided on the outer peripheral side of the portion, a winding is provided on the first split core body and the second split core body, and the locking convex portion and the locking concave portion are press-fitted. The above-mentioned stator was constituted.

[0015] 5. A rotating electric machine in which a stator core is constituted by a plurality of divided cores each including a divided tooth core and a core back core, and a stator winding is wound around the tooth core of the divided core. In the stator, an extended portion extending in the circumferential direction is provided on one of side surfaces near the inner peripheral side of the core back core portion of the split core body, and a step portion is provided on the other side, and a locking portion is provided on the outer peripheral side of the extended portion. A convex portion, an inclined portion provided at an end of the extension portion, a locking concave portion provided on an inner peripheral side of the step portion, and a bent portion provided on an inner peripheral side of the core back core portion, The stator is configured such that the locking projection and the locking recess are engaged with each other, and the bent portion of the core back core is bent in the direction of the inclined portion. To do.

6. A rotating electric machine in which a stator core is constituted by a plurality of divided cores each including a divided tooth core and a core back core, and a stator winding is wound around the tooth core of the divided core. In the stator, the split core body is composed of a first split core body and a second split core body, and a circumferential direction is formed on both sides of a side surface near an inner circumferential side of the core back core portion of the first split core body. The extended portion is provided on the inner peripheral side of the extended portion, a convex portion for locking, a tip portion of the extended portion is provided with an inclined portion, the outer peripheral side of the core back core portion of the second split core body. A stepped portion is provided on both sides, a locking recess is provided on the inner peripheral side of the stepped portion, a bent portion is provided on the inner peripheral side of the core back core portion, and a first split core body and a second split core are provided. The core has a winding, and the locking projection and the locking recess are engaged with each other, and That the the bent portion of the core portion was constituted of the stator, as bent in the direction of the inclined portion.

[7] A rotating electric machine in which a stator core is constituted by a plurality of divided cores each including a divided tooth core and a core back core, and a stator winding is wound around the tooth core of the divided core. In the stator, an extended portion extending in the circumferential direction is provided on one of side surfaces near the inner peripheral side of the core back core portion of the split core body, and a step portion is provided on the other side, and a locking portion is provided on the outer peripheral side of the extended portion. A convex portion, a locking concave portion provided on the outer peripheral side of the step portion, a winding on the split core body, the press-fitting of the locking convex portion and the locking concave portion. Having configured the stator.

[8] A rotating electric machine in which a stator core is constituted by a plurality of divided cores each including a divided tooth core and a core back core, and a stator winding is wound around the tooth core of the divided core. In the stator, the split core body is composed of a first split core body and a second split core body, and a circumferential direction is formed on both sides of a side surface near an inner circumferential side of the core back core portion of the first split core body. Along with an extended portion, a projection for locking is provided on the outer peripheral side of the extended portion, and a step portion is provided on both sides on the inner peripheral side of the core back core portion of the second split core body. A locking recess is provided on the outer peripheral side of the step portion, and the first and second split core bodies have windings, and the locking projection and the locking recess are press-fitted. The stator is configured as described above.

9. In any one of the above items 2 to 8, after the winding is applied to the divided core bodies in a state of being arranged circumferentially, the diameter of the arranged divided core bodies is reduced to reduce the diameter of the locking projection. The stator is configured to engage with the recess.

[10] A rotating electric machine in which a stator core is constituted by a plurality of divided cores each including a divided tooth core and a core back core, and a stator winding is wound around the tooth core of the divided core. In the stator,
The split core body includes a first split core body and a second split core body, and extension protrusions extending in the circumferential direction on both sides of the inner circumferential side of the core back core portion of the first split core body. And a projection for locking and a recess for locking are provided on the outer peripheral side of the extension projection, and a bent portion is provided on the outer peripheral side of the core back core. An extension protrusion extending in the circumferential direction is provided on both sides of an outer peripheral side divided side surface of the core back core portion, and an engagement protrusion and an engagement recess are provided on an inner peripheral side of the extension protrusion; An inclined portion is provided at an outer peripheral side divided side end portion of the back core portion, a first divided core body and a second divided core body have windings, and the locking projection and the locking recess are provided. The bent portion of the first split core body is
The stator is configured to be bent in the direction of the inclined portion of the divided iron core body.

11. 11. A rotating electric machine comprising the stator of the rotating electric machine according to any one of 1 to 10 above.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will now be described with reference to FIGS.
This will be described with reference to FIG.

FIG. 1 shows a radial cross-sectional shape of a stator according to one embodiment of the present invention, and FIG. 2 shows a fitting diagram of the stator according to one embodiment of the present invention. In the figure, a stator 1 has a divided core body 4 having a core back core part 2 and a tooth core part 3 having the same shape, a stator winding 5 (a concentrated winding U-phase 5a, a V-phase 5b, W
Phase 5c). The split core body 4 is provided with an extended portion 6 extending in the circumferential direction on one side surface near the outer peripheral side of the core back core portion 2 and a stepped portion 7 on the other side, and a locking projection is provided on the inner peripheral side of the extended portion 6. An inclined portion 9 is provided at the tip of the portion 8 and the extension portion 6, a locking concave portion 10 is provided on the outer peripheral side of the step portion 7, and a bent portion 11 and a cut portion 1 are provided on the outer peripheral side of the core back core 2.
2 is provided. After the stator winding 5 is applied to the split core 4 and the locking projection 8 and the locking recess 10 are engaged with each other, the configuration shown in FIG. An opening 13 is formed, and a split surface 14 is formed between the split iron core bodies 4. At this time, if an external force P is applied to the cut portion 12 in the direction of the arrow, the bent portion 11 of the core back core 2 can be bent in the direction of the inclined portion 9, and the stator 1 can be configured.

FIG. 3 shows a radial cross-sectional shape of a stator according to another embodiment of the present invention, FIG. 4 shows a fitting diagram of a stator according to another embodiment of the present invention, and FIG. 5 shows another embodiment of the present invention. FIG. 6 shows an arrangement diagram of a core of a stator according to an example, FIG. 6 shows a diagram of a winding arrangement of a stator according to another embodiment of the present invention, and FIG. 7 shows a mating diagram of a split core according to another embodiment of the present invention. 3 to 7, the stator 1 has a split core 4A (first split core) including a core back core 2A and a tooth core 3 and a split core including a core back core 2B and a tooth core 3. Iron core 4B (2nd
And a stator winding 5 (concentrated winding U-phase 5a, V-phase 5b, W-phase 5c). Core back core part 2A is included in split core body 4A.
Extension portions 6 extending in the circumferential direction on both sides of the side surface near the outer peripheral side of
A projection 8 for locking is provided on the inner peripheral side of the extension 6, and an inclined portion 9 is provided at the tip of the extension 6.
B, a stepped portion 7 is provided on both sides near the side surface end, a locking recess 10 is provided on the outer peripheral side of the stepped portion 7, and a bent portion 11 and a cut portion 1 are provided on the outer peripheral side of the core back core portion 2B.
2 is provided. Then, in a state in which the divided core body 4 is enlarged in the radial direction (outside the radial center line 15 shown by the broken line, it is enlarged in the radial direction, the slot opening portion 13 between the tooth core portions 3 is indicated by a triangle mark 13A. When the stator winding 5 is provided, the concentrated winding can be wound in an aligned manner because the slot opening 13 is wide, and the coil space factor can be improved. Then, the divided core body 4 is moved toward the inner diameter side along the radial center line 15 (in the direction of arrow X), and the engaging projection 8 and the engaging concave section 10 are engaged with each other. A slot opening 13 is formed between the core portions 3, and a division surface 14 is formed between the divided core bodies 4. At this time, when an external force P is applied to the cut portion 12 in the direction of the arrow, the bent portion 11 of the core back core portion 2B can be bent in the direction of the inclined portion 9, and the stator 1 can be configured.

FIG. 8 shows a mating diagram of a split core according to another embodiment of the present invention, and the same components as those in FIG. 1 are denoted by the same reference numerals. 8 is different from FIG. 1 in the presence or absence of the bent portion 11 and the cut portion 12. That is, when the divided core bodies 4 on which the stator windings 5 are applied are assembled so as to engage the locking projections 8 and the locking recesses 10, the configuration shown in FIG. A slot opening 13 is formed, and a dividing surface 14 is formed between the divided iron core bodies 4. At this time, if the engagement tolerance between the locking projection 8 and the locking recess 10 is tight, the stator 1 can be configured only by fitting the locking projection 8 and the locking recess 10. become.

FIG. 9 shows a mating diagram of a split core according to another embodiment of the present invention, and the same components as those in FIG. 3 are denoted by the same reference numerals. 9 differs from FIG. 3 in the presence or absence of the bent portion 11 and the cut portion 12. That is, the split core 4A and the split core 4B on which the stator winding 5 is applied are connected to the locking projections 8.
9 is assembled so as to be engaged with the locking recess 10, the slot opening 13 is formed between the tooth cores 3, and the dividing surface 14 is formed between the divided cores 4. At this time, if the engagement tolerance between the locking projection 8 and the locking recess 10 is set tight, the locking projection 8 and the locking recess 1
The stator 1 can be constituted only by fitting 0s.

FIG. 10 shows a mating diagram of a split core according to another embodiment of the present invention, and FIG. 11 shows a winding installation diagram of a split core according to another embodiment of the present invention. The same reference numerals are given. The difference between FIGS. 10 and 11 and FIG. The figure shows a rotor composed of a rotor core 16, a magnet 17, and a shaft 18, and the number of slots is indicated by six. 10 and 11, the stator 1 is composed of a split core 4A including a core back core 2A and a tooth core 3, and a split core 4B including a core back core 2B and a tooth core 3. It is composed of a split core 4 and a stator winding 5. The split core body 4A has an extended protrusion 19 extending circumferentially on both sides of the inner peripheral side divided side surface of the core back core portion 2A, and a locking protrusion 20 and a locking recess on the outer peripheral side of the extended protrusion 19. 21, and a bent portion 11 and a cut portion 1 on the outer peripheral side of the core back core portion 2A.
2 is provided, and a core back core portion 2B is
Extension projections 2 extending in the circumferential direction on both sides of the outer peripheral side divided side surface
2, and a locking projection 24 and a locking recess 23 are provided on the inner peripheral side of the extension projection 22. And divided iron core 4
In the radial direction (diameter center line 1 indicated by a broken line).
5, the slot opening 13 between the teeth iron cores 3 becomes larger as shown by the mark 13A), and when the stator winding 5 is applied, the slot opening 13 becomes larger.
Because the width is wide, concentrated windings can be wound in an aligned manner and the coil space factor can be improved. Then, the divided iron core body 4 is moved to the inner diameter side along the radial center line 15, and the locking projection 20 and the locking recess 23 and the locking projection 24 and the locking recess 21 are fitted. Then, when an external force P is applied to the cut portion 12 in the direction of the arrow,
The bent portion 11 of the core back core portion 2A can be bent in the direction of the inclined portion 9 of the core back core portion 2B.
, A slot opening 13 is formed between the teeth cores 3, and a dividing surface 14 is formed between the divided cores 4.

The effects of the above embodiment of the present invention will be described.

The common feature of this embodiment is that the dividing surface 14
Is located on the side surface of the split core body 4, and the mating portion is located on the outer diameter side of the core back core 2. That is, since the gap between the divided surfaces is not affected by the accuracy of the fitting, the gaps between the divided surfaces can be made uniform, and the variation in the performance of the rotating electric machine can be minimized. By removing the extension or bent portion provided close to the outer periphery of the core back core, the divided cores can be separated individually, making it easier to separate into copper and iron and improving the recycling rate. There is. In addition, since concentrated winding winding can be applied in a state where the slot opening is wide, it is possible to wind in an aligned manner and the coil space factor is improved, and there is no need for laser welding, so there is no eddy current loss Thus, there is an effect that an efficient rotating electric machine with little copper loss can be obtained.

Next, the effect of each embodiment will be described.

In the embodiment shown in FIG. 3, two divided cores are provided, so that the divided cores can be engaged in the radial direction at the time of engagement (in the embodiment shown in FIG. 1, they are engaged from the circumferential direction). Therefore, assembling of the divided iron core body becomes slightly complicated), and there is an effect that the automatic assembling becomes easier with respect to the embodiment of FIG.

In the embodiment shown in FIGS. 8 and 9, since the divided iron core bodies are assembled only by fitting, there is an effect that the automatic iron assembly can be easily assembled with respect to the embodiment shown in FIG. It should be noted that, depending on the accuracy of the fitting, the divided core bodies may be separated, so it is necessary to store the divided core bodies in a frame or the like after the fitting.

In the embodiment shown in FIG. 10, two divided iron cores are provided, and the divided surfaces of the divided iron cores are shifted from the radial direction. Therefore, even if a lateral external force is applied to the divided iron cores, the divided iron cores are strong. The effect is as follows.

A rotating electric machine having the above-described rotating electric machine stator can be provided.

As described in detail above, the stator core is divided into a divided core body composed of the teeth core portion and the core back core portion, and the stator core is radially formed on a part of the core back core portion of the divided core body. Providing stop protrusions and recesses, arranging the divided cores in a circumferential shape, applying windings to the divided cores with the arranged diameter large, and then reducing the arranged diameter and locking The stator is configured by engaging the convex portion with the concave portion. In other words, since the split surface is located on the side surface of the split core body and the fitting portion is located on the outer diameter side of the core back core portion, the gap of the split surface is not affected by the fitting accuracy, and the split surface gap Has the effect of minimizing variations in performance of the rotating electric machine. Next, by removing the extended portion or the bent portion provided in the vicinity of the outer peripheral side of the core back core portion, the divided core bodies can be individually separated, so that it becomes easy to separate into copper and iron, and the recycling rate is reduced. There is an effect that can be improved. In addition, since concentrated winding winding can be applied in a state where the slot opening is wide, it is possible to wind in an aligned manner and the coil space factor is improved, and there is no need for laser welding, so there is no eddy current loss Thus, there is an effect that an efficient rotating electric machine with little copper loss can be obtained.

[0036]

According to the present invention, laser welding is not required, eddy current loss does not occur, and the gap between the mating surfaces of the divided iron cores can be reduced to zero as much as possible. It is possible to provide a rotating electric machine stator that can be achieved.

[Brief description of the drawings]

FIG. 1 is a radial cross-sectional shape of a stator according to one embodiment of the present invention.

FIG. 2 is a mating diagram of a stator according to an embodiment of the present invention.

FIG. 3 is a radial cross-sectional shape of a stator according to another embodiment of the present invention.

FIG. 4 is a mating diagram of a stator according to another embodiment of the present invention.

FIG. 5 is a layout diagram of an iron core of a stator according to another embodiment of the present invention.

FIG. 6 is a view showing a stator winding mounting according to another embodiment of the present invention.

FIG. 7 is a mating diagram of a split core according to another embodiment of the present invention.

FIG. 8 is a mating diagram of a split core according to another embodiment of the present invention.

FIG. 9 is a mating diagram of a split core according to another embodiment of the present invention.

FIG. 10 is a mating diagram of a split core according to another embodiment of the present invention.

FIG. 11 is a view showing the installation of windings of a split core according to another embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Stator, 2 ... Core back core part, 3 ... Teeth core part, 4 ... Split core body, 5 ... Stator winding, 6 ... Extension part, 7
... Stepped portion, 8 ... Locking convex portion, 9 ... Inclined portion, 10 ... Locking concave portion, 11 ... Bend portion, 12 ... Notch portion, 13 ... Slot opening portion, 14 ... Dividing surface, 15 ... Radial center Wire, 16: rotor core, 17: magnet, 18: shaft, 19: extension projection, 20, 24 ... locking projection, 21, 23 ... locking recess, 22 ... extension projection.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Ryoichi Naganuma 7-1-1, Omika-cho, Hitachi City, Ibaraki Prefecture Inside the Hitachi Research Laboratory, Hitachi, Ltd. (72) Mika Takahashi 7, Omika-cho, Hitachi City, Ibaraki Prefecture No. 1-1 In Hitachi Research Laboratory, Hitachi, Ltd. (72) Inventor Shoji Senoo 7-1-1, Higashi Narashino, Narashino City, Chiba Prefecture F-term in the Industrial Equipment Division of Hitachi, Ltd. 5H002 AA07 AB01 AC06 AC08 AE08

Claims (11)

[Claims] 1. A stator core comprising a plurality of divided cores comprising a divided teeth core and a core back core, wherein a stator winding is wound so as to surround the teeth core of the divided core. In the stator of the rotating electric machine mounted, an extended portion extending in the circumferential direction is provided on one of side surfaces near the outer peripheral side of the core back core portion of the split core body, and a step portion is provided on the other side, and an inner periphery of the extended portion is provided. The convex portion for locking on the side, the inclined portion is provided at the tip of the extension portion, the concave portion for locking is provided on the outer peripheral side of the step portion, and the bent portion is provided on the outer peripheral side of the core back iron core portion. The stator is configured by engaging the locking convex portion and the locking concave portion, and bending the bent portion of the core back core in the direction of the inclined portion. A stator for a rotating electric machine characterized by the above-mentioned. 2. A stator core comprising a plurality of divided cores comprising a divided teeth core and a core back core, wherein a stator winding is wound so as to surround the teeth core of the divided core. In the stator of the rotating electric machine mounted, the split core body is composed of a first split core body and a second split core body, and the side face of the first split core body near the outer peripheral side of the core back core portion is provided. An extension portion extending in the circumferential direction is provided on both sides, a projection for locking is provided on the inner peripheral side of the extension portion, and an inclined portion is provided at a tip of the extension portion, and the core back core portion of the second split core body is provided. Steps are provided on both sides on the outer peripheral side of the core backing, a locking recess is provided on the outer peripheral side of the stepped part, and a bent part is provided on the outer peripheral side of the core back core. Having a winding on the divided core body, and engaging the locking projection and the locking recess. The stator of the rotating electric machine being characterized in that so as to constitute the stator by the the bent portion of the core back core portion and a folded state in the direction of the inclined portion. 3. A stator core comprising a plurality of divided cores comprising a divided tooth core and a core back core, wherein a stator winding is wound so as to surround the tooth core of the divided core. In the stator of the rotating electric machine mounted, an extended portion extending in the circumferential direction is provided on one of side surfaces near the outer peripheral side of the core back core portion of the split core body, and a step portion is provided on the other side, and an inner periphery of the extended portion is provided. Side is provided with a locking projection, a locking recess is provided on the outer peripheral side of the stepped portion, the divided core body is provided with a winding, and the locking projection and the locking recess are press-fitted. A stator for a rotating electrical machine, wherein the stator is configured to fit together. 4. A stator core is constituted by a plurality of divided cores comprising a divided tooth core and a core back core, and the stator winding is wound so as to surround the teeth core of the divided core. In the stator of the rotating electric machine mounted, the split core body is composed of a first split core body and a second split core body, and the side face of the first split core body near the outer peripheral side of the core back core portion is provided. Along with extending portions extending in the circumferential direction on both sides, a protrusion for locking is provided on the inner peripheral side of the extending portion, and step portions are provided on both sides on the outer peripheral side of the core back core portion of the second split core body. In addition to this, a locking concave portion is provided on the outer peripheral side of the step portion, and a winding is provided on the first divided iron core body and the second divided iron core body, and the locking convex portion and the locking concave portion are formed. A stator for a rotating electric machine, wherein the stator is configured to be press-fitted. 5. A stator core comprising a plurality of divided cores comprising a divided tooth core and a core back core, wherein a stator winding is wound so as to surround the tooth core of the divided core. In the stator of the rotating electric machine mounted, an extended portion extending in the circumferential direction is provided on one of the side surfaces near the inner peripheral side of the core back core portion of the split core body, and a step portion is provided on the other, and the outer periphery of the extended portion is provided. Side, an inclined portion is provided at the end of the extension portion, a locking concave portion is provided on the inner peripheral side of the step portion, and a bent portion is provided on the inner peripheral side of the core back core portion. The split core body has a winding so that the locking projection and the locking recess are engaged with each other, and the bent portion of the core back core is bent in the direction of the inclined portion. A stator for a rotating electric machine, comprising the stator. 6. A stator core is constituted by a plurality of divided cores comprising a divided tooth core and a core back core, and a stator winding is wound so as to surround the teeth core of the divided core. In the stator of the rotating electric machine mounted, the split core body is constituted by a first split core body and a second split core body, and a side surface of the first split core body near the inner peripheral side of the core back core portion. The core back core of the second split core body is provided with an extension extending in the circumferential direction on both sides of the core, a projection for locking on the inner peripheral side of the extension, and an inclined portion at the tip of the extension. A stepped portion provided on both sides of the outer peripheral side of the portion, a locking concave portion provided on an inner peripheral side of the stepped portion, and a bent portion provided on an inner peripheral side of the core back core portion; And the second divided core body has a winding, and the engaging projection and the engaging recess are engaged with each other. The stator of a rotating electric machine of the bent portion of the core back core portion, characterized in that constitutes the stator as bent in the direction of the inclined portion. 7. A stator core is constituted by a plurality of divided cores composed of a divided tooth core and a core back core, and the stator winding is wound so as to surround the tooth core of the divided core. In the stator of the rotating electric machine mounted, an extended portion extending in the circumferential direction is provided on one of the side surfaces near the inner peripheral side of the core back core portion of the split core body, and a step portion is provided on the other, and the outer periphery of the extended portion is provided. Side is provided with a locking projection, a locking recess is provided on the outer peripheral side of the stepped portion, the divided core body is provided with a winding, and the locking projection and the locking recess are press-fitted. A stator for a rotating electrical machine, wherein the stator is configured to fit together. 8. A stator core is constituted by a plurality of divided cores comprising a divided tooth core and a core back core, and the stator winding is wound so as to surround the teeth core of the divided core. In the stator of the rotating electric machine mounted, the split core body is constituted by a first split core body and a second split core body, and a side surface of the first split core body near the inner peripheral side of the core back core portion. And an extension extending in the circumferential direction is provided on both sides of the core-back core portion of the second split core body. And a locking recess is provided on the outer peripheral side of the stepped portion, and a winding is provided on the first split core body and the second split core body, and the locking projection and the locking recess are provided. Wherein the stator is configured to be press-fitted. 9. The method according to claim 2, wherein after the winding is applied in a state of being arranged in a circumferential shape on the divided core bodies, the diameter of the arranged divided core bodies is reduced. The stator of a rotating electric machine, wherein the stator is configured to engage the locking projection and the recess. 10. A stator core is constituted by a plurality of divided cores comprising a divided tooth core and a core back core, and the stator winding is wound so as to surround the teeth core of the divided core. In the stator of the rotating electric machine mounted, the split core body is constituted by a first split core body and a second split core body, and the inner circumferential side split side surface of the core back core portion of the first split core body is provided. An extension protrusion extending in the circumferential direction is provided on both sides, and a protrusion for locking and a recess for locking are provided on the outer periphery of the extension protrusion, and a bent portion is provided on the outer periphery of the core back core. And an extension protrusion extending in the circumferential direction is provided on both sides of the outer divided side surface of the core back core portion of the second split core body, and a locking projection is locked on the inner circumference side of the extension protrusion. Recessed portion, and an inclined portion is provided at the outer peripheral side divided side end portion of the core back core portion. The first split core and the second split core have windings, and the locking projection and the locking recess are engaged with each other, and the bent portion of the first split core is connected to the first split core. A stator for a rotating electric machine, wherein the stator is configured to be bent in the direction of the inclined portion of the second split core body. 11. A rotating electric machine comprising the stator of the rotating electric machine according to claim 1. Description: