JP2000032690A - Stator core for electric rotating machine and manufacture of stator for the electric rotating machine as well as magnet rotor-type motor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stator, for an electric rotating machine, which can increase the space factor and which can be assembled easily. SOLUTION: Magnetic pole piece parts 4, etc., of a plurality of magnetic poles 5, etc., are coupled to magnetic-pole piece parts 4 of adjacent other magnetic poles 5 via coupling parts 6, etc., and a magnetic-pole aggregate 7 which is constituted of the plurality of magnetic poles 5, etc., and the coupling parts 6 in plurality. Unit windings 9 are wound on the plurality of magnetic poles 5, etc., in the magnetic-pole aggregate 7. The magnetic-pole aggregate 7, in which the unit windings 9 are wound is used as one unit, so as to be inserted into the inside of a ring-shaped yoke 2. Protrusion parts 8 which are formed in core parts 3, etc., of the respective magnetic poles 5, etc., are fitted simultaneously to groove parts 2c, which are formed in the inner circumferential part of the yoke 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a stator core for a rotating electric machine, a stator for a rotating electric machine, and a stator for a rotating electric machine used for an inner rotor type rotating electric machine in which the rotor rotates inside the stator. It relates to a manufacturing method.

[0002]

2. Description of the Related Art In a stator for a rotating electric machine used in a conventional rotating electric machine such as an AC servomotor, a plurality of magnetic poles are provided on an inner peripheral portion of an annular yoke with a predetermined interval in a circumferential direction. The placed stator core is used. Each magnetic pole of the stator core has a core portion around which a winding is wound and a pole piece formed at one end of the core portion. In a general stator core, a yoke and a plurality of magnetic poles are integrally formed.
However, a fitting projection is provided at the other end of the core of the plurality of magnetic poles, and a plurality of fitting grooves are provided on the inner peripheral portion of the yoke. There is also an iron core for a rotating electric machine in which a magnetic pole and a yoke are connected by fitting.

[0003]

In the former stator core, it is necessary to insert a winding conductor into a slot formed between the magnetic poles and wind the winding around the core of the magnetic pole. However, there is a problem that it is difficult to increase the space factor of the winding conductor in the slot. On the other hand, the latter stator core can increase the space factor, but requires the work of fixing each magnetic pole individually to the yoke.
As the number of magnetic poles increases, the work of assembling the stator core becomes complicated.

An object of the present invention is to provide a stator core for a rotating electric machine and a stator for a rotating electric machine which can increase the space factor and can be easily assembled.

Another object of the present invention is to provide a stator for a rotating electric machine in which a winding and a terminal can be easily connected.

Another object of the present invention is to provide a method of manufacturing a stator for a rotating electric machine, which can easily perform a work of fixing a magnetic pole to a yoke.

Another object of the present invention is to provide a magnet rotor type electric motor which is easy to assemble and has a high space factor of a stator winding.

[0008]

SUMMARY OF THE INVENTION A stator iron core for a rotating electric machine to be improved by the present invention is formed at an iron core part around which an annular yoke and a winding are wound, and at one end of the iron core part. And a plurality of magnetic poles provided with a pole piece. The annular yoke and the plurality of magnetic poles are each formed by stacking electromagnetic steel sheets. Further, fitting portions provided at the other ends of the iron core portions of the plurality of magnetic poles are respectively fitted to a plurality of fitted portions formed on the inner peripheral portion of the yoke. In a stator for a rotating electrical machine using such a stator core, a stator winding is wound around iron cores of a plurality of magnetic poles.

According to the present invention, the pole pieces of a plurality of magnetic poles are connected to the pole pieces of other adjacent magnetic poles via a connecting portion formed of an electromagnetic steel plate, so that the plurality of magnetic poles and the plurality of connecting portions are connected to each other. A magnetic pole assembly is formed. When such a magnetic pole assembly is used, the winding can be wound around the core of the magnetic pole before combining the annular yoke and the magnetic pole assembly, so that the occupation of the winding in the slot formed between the magnetic poles can be achieved. The moment can be increased. In addition, the magnetic pole assembly can be inserted as a unit into the annular yoke, and the fitting part of the iron core of each magnetic pole can be simultaneously fitted to the fitting part provided on the inner peripheral part of the yoke. Therefore, the operation of attaching a plurality of magnetic poles to the yoke can be performed in one operation, and the assembling operation is greatly simplified.

[0010] Even if the pole pieces of the magnetic poles are connected to each other by the connecting portions, the performance of the rotating electric machine is not significantly affected. Particularly, in a magnet rotor type electric motor of a type commonly called an IPM motor, even if such a stator core is used, the performance is hardly affected. The rotor used in this type of magnet rotor type motor has a plurality of permanent magnet insertion slots formed at intervals in the circumferential direction inside a rotor core formed by laminating electromagnetic steel sheets. I have.
The permanent magnets constituting the rotor magnetic poles are inserted into these permanent magnet insertion slots.

If the performance is affected to a certain extent when the pole pieces of the respective magnetic poles are connected to each other by the connecting portion, it is necessary to cut or remove the connecting portion after combining the magnetic pole assembly with the yoke. Alternatively, the radial dimension (thickness) of the connecting portion may be reduced. The work of cutting or removing each connecting part or reducing the thickness is much easier than the work of individually fixing a plurality of magnetic poles individually to the yoke, and the rotating electric machine stator and magnet rotating The manufacture of the slave motor is simplified.

The magnetic pole assembly is easily and inexpensively formed by laminating annular magnetic steel sheets formed in a ring shape so that portions constituting a plurality of magnetic poles and portions constituting a plurality of connecting portions are alternately arranged. Can be manufactured.

It is a matter of course that the radial thickness of the connecting portion should be smaller than the radial minimum thickness of the pole piece of the magnetic pole. The smaller this thickness dimension, the more
It will be understood that the magnetic properties are close to those of the existing stator core, which has a gap between adjacent pole pieces.
However, if the thickness is too small, the mechanical strength of the magnetic pole assembly is reduced, which causes a problem that the assembling work becomes difficult. Therefore, it is not preferable to extremely reduce the thickness.

When the stator is constructed using the stator core of the present invention, the unit windings concentratedly wound on the bobbin are fitted to the cores of a plurality of magnetic poles of the magnetic pole assembly, respectively. It is preferable to configure This is because the magnetic pole assembly has an annular shape, so that a special winding machine for directly winding a winding on each magnetic pole must be prepared. Therefore, considering the manufacturing cost, it is preferable that the unit winding concentrated around the bobbin be fitted to the iron cores of the plurality of magnetic poles of the magnetic pole assembly as described above.

However, when such a unit winding is used, when each unit winding is electrically connected to a terminal, it is necessary to carry out an operation of leading a lead wire of the winding to the terminal.
For example, in a motor used for applications requiring a large current, such as a motor for driving an electric vehicle, a relatively thick winding conductor is used. Become. In order to solve such a problem, a terminal block including a plurality of terminals to which the lead wires of the stator windings are connected and a terminal fixing table formed of an insulating material to which the plurality of terminals are fixed is used. The terminal fixing base has a plurality of pairs of connection terminal portions which are arranged at positions corresponding to the plurality of magnetic poles and to which lead wires of the unit winding wound around the corresponding magnetic poles are connected, and a plurality of connection terminal portions for connecting the plurality of pairs. A wiring part for electrically connecting the terminal part and the plurality of terminals is fixed. A plurality of terminals, a plurality of connection terminal portions and a wiring portion, a single terminal, a plurality of connection terminal portions electrically connected to the one terminal, one terminal and a plurality of connection terminal portions; Are formed as a plurality of terminal wiring structures integrally formed of a metal plate with a wiring portion for electrically connecting the terminal wiring structures. When a terminal block provided with such a terminal wiring structure is used, the lead wires may be connected to the connection terminal portions arranged at positions close to the lead wires of the respective windings. Not only does work become unnecessary, so workability is greatly improved, but also automation of manufacturing becomes easy. In particular, when a terminal wiring structure in which a terminal, a wiring portion, and a connection terminal portion are integrated with a metal plate is used, not only can the terminal block be easily manufactured, but also the mechanical strength and the electrical insulation of the terminal block can be increased. be able to.

In the case where the stator winding is formed by a connection method having a neutral point, a plurality of connection terminal parts connected to the neutral point and wirings for interconnecting these connection terminal parts are provided. What is necessary is just to prepare a terminal wiring structure in which a part is integrally formed by a metal plate, and fix this to a terminal fixing base.

When manufacturing the stator for a rotating electric machine of the present invention, first, the pole pieces of a plurality of magnetic poles and the pole pieces of other adjacent magnetic poles are connected via a connecting portion formed of an electromagnetic steel plate. Make a magnetic pole assembly. Then, the stator winding is wound around the cores of the plurality of magnetic poles of the magnetic pole assembly. Thereafter, the magnetic pole assembly is inserted into the yoke, and the fitting portions of the plurality of magnetic poles included in the magnetic pole assembly are simultaneously fitted to the corresponding fitting portions of the yoke. If the magnetic steel sheet for forming the magnetic pole assembly is punched from a portion located inside when the magnetic steel sheet for forming the yoke is punched, the magnetic steel sheet material can be used without waste. Further, in this case, it is needless to say that the electromagnetic steel sheet for forming the rotor core of the rotor may be punched from a portion located inside when the electromagnetic steel sheet for forming the magnetic pole assembly is punched. Also, it is a matter of course that a plurality of fitted portions may be formed at the same time when the electromagnetic steel sheet for forming the yoke is punched.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a diagram showing a schematic configuration of a main part of an example of an embodiment applied to a three-phase AC servomotor which is a kind of a magnet rotor type electric motor commonly called an IPM type electric motor of the present invention. In FIG. 1, 1
Reference numeral 1 denotes a stator core. The stator core 1 includes an annular yoke 2 and an iron core 3 on which a stator winding described later is wound, and a magnetic pole piece formed at one end of the iron core 3. And 12 magnetic poles 5 provided with the section 4. Projections 2a projecting radially outward at 90 ° intervals are integrally formed on the yoke 2, and these projections 2a are formed with through holes 2a.
b ... are formed. These through holes 2a are used when combining a pair of end brackets fixed to both sides in the axial direction of the yoke 2 (the axial direction of the rotating shaft to which the rotor is fixed) with the yoke 2. Bolt is inserted. The annular yoke 2 and the magnetic poles 5 are each formed by stacking electromagnetic steel sheets.

The pole piece 4 of each magnetic pole 5 is connected to the pole piece 4 of another adjacent magnetic pole 5 via a connecting portion 6 formed of an electromagnetic steel plate. A magnetic pole assembly 7 is constituted by 12 magnetic poles 5 and 12 connecting portions 6 arranged alternately. The connecting portions 6 are clearly shown in FIG. At the other end (the end opposite to the pole piece 4) of the iron core portions 3 of the magnetic poles 5, there are integrally provided projections 8 forming a fitting portion. These projections 8 extend continuously in the axial direction or the laminating direction of the electromagnetic steel sheets. Also, a groove 2c that forms a fitted portion into which the protrusions 8 are fitted is formed in the inner peripheral portion of the yoke 2.
Are formed at intervals in the circumferential direction. This groove 2
c also extend continuously in the axial direction or the laminating direction of the electromagnetic steel sheets. In addition, the shape dimension, that is, the radial dimension and the circumferential dimension of the groove portions 2c are slightly larger than those of the convex portions 8, and the convex portions 8 are relatively easily fitted into the groove portions 2c. You. After the convex portions 8 and the groove portions 2c are fitted, the magnetic poles 5 are formed by using an appropriate joining technique such as laser welding.
And the yoke 2 are strongly bonded to each other.

Unit cores 9 formed by winding winding conductors around a bobbin 9a are fitted to the core portions 3 of the magnetic poles 5 of the magnetic pole assembly 7, respectively. In order to increase the space factor of the winding conductor arranged in the slot formed between the two adjacent magnetic poles 5 and 5, the unit winding increases in the number of turns as it approaches the yoke 2, and It has a shape whose dimensions increase. The shape of the winding conductor is arbitrary, but in order to increase the space factor, it is preferable to use a so-called square winding conductor having a rectangular cross section. In this example, the unit windings 9 are electrically connected so as to form a three-phase parallel star connection. The connection relationship between each unit winding 9 and the terminal will be described later in detail. In this example, the members 10 to 9 constitute a rotating electric machine stator 10.

Reference numeral 14 denotes a rotor with a built-in permanent magnet in which a rotating shaft is omitted. The rotor 14 is formed at intervals in a circumferential direction inside a rotor core 11 formed by laminating electromagnetic steel plates. It has eight permanent magnet insertion slots 12. These permanent magnet insertion slots 12 include:
Each of the permanent magnets 13 constituting the rotor magnetic poles is inserted. Since the structure of the rotor is publicly known, detailed description is omitted.

Next, a method of manufacturing the stator 10 for the rotating electric machine will be specifically described. FIG. 2 is an enlarged view of the yoke 2 configured by laminating electromagnetic steel sheets. In the inner peripheral portion of the yoke 2, two types of twelve grooves 2c... And twelve grooves 2d.
Are alternately arranged in the circumferential direction. In the example of the present invention, when the magnetic steel sheet for forming the yoke 2 is punched from the magnetic steel sheet material, the magnetic steel sheet forming the magnetic pole assembly 7 is punched from a portion located inside the steel sheet. Therefore, grooves 2d formed in the inner peripheral portion of the yoke 2 ...
Are formed as punched marks of the projections 8 of the magnetic pole 5 when the magnetic steel sheet constituting the magnetic pole assembly 7 is punched. On the other hand, the grooves 2c are punched together when punching an electromagnetic steel sheet for forming the yoke 2 into a shape and a shape into which the protrusions 8 of the magnetic pole 5 can be fitted. Yoke 2
Are laminated and integrated by a so-called rolling pile.

As shown in FIG. 3, the magnetic pole assembly 7 inserted into the yoke 2 is punched from a portion located inside the magnetic steel sheet for forming the yoke 2 when the magnetic steel sheet is punched from the magnetic steel sheet material. The magnetic pole assembly 7 is manufactured by rolling and stacking a plurality of magnetic steel sheets. The magnetic steel sheet forming the magnetic pole assembly 7 has a shape in which the portions forming the magnetic poles 5 and the portions forming the connecting portions 6 are formed in a ring shape so as to be alternately arranged in the circumferential direction. The radial thickness of the connecting portion 6 formed by a plurality of magnetic steel sheets is smaller than the minimum radial thickness of the pole pieces 4 of the magnetic poles 5. The smaller the thickness, the closer the magnetic properties of the existing stator core, which is a gap between adjacent pole pieces, are. However, if the thickness is too small, the mechanical strength of the magnetic pole assembly is reduced, which causes a problem that the assembling work becomes difficult. Therefore, it is not preferable to extremely reduce the thickness.

In the present invention, as shown in FIG.
The unit windings 9 in which the winding conductors are concentratedly wound around a are fitted to the iron cores 3 of the magnetic poles 5 of the magnetic pole assembly 7, respectively. Thereafter, the magnetic pole assembly 7 is inserted into the yoke 2, and the projections 8 of the magnetic poles 5 included in the magnetic pole assembly 7 are simultaneously fitted into the corresponding grooves 2c of the yoke 2. After the fitting operation is completed, a laser is irradiated to the joint between the magnetic poles 5 and the yoke 2 to join them.

A terminal block 15 as shown in FIG. 6 is attached to the stator 10 thus manufactured. The terminal block 15 includes a terminal fixing block 16 made of an insulating resin and four types of terminal wiring structures 17 to 20 fixed to the terminal fixing block 16.
It is composed of In the center of the terminal fixing base 16, a through hole 16a that does not hinder insertion and rotation of the rotor 14 is formed. A cylindrical peripheral wall portion 16c extending rearward in the drawing of the drawing is provided on an outer peripheral portion of the annular pedestal 16b of the terminal fixing base 16.
Are provided integrally. And this cylindrical peripheral wall portion 16
Is in contact with one side surface of the yoke 2 in the axial direction (see FIG. 7). The terminal wiring structures 17 to 20 are each formed integrally by machining a metal plate. The terminal wiring structures 17 to 19 are terminals 17a to 19a, respectively.
And connection terminal portions 17b1 to 17b4, 18b1 to 18b4, and 19b1 to which the lead wires of the unit windings 9 are connected.
To 19b4 and wiring portions 17c to 19c for connecting these terminals to the connection terminal portion. A through hole h is formed in each of the terminals and the connection terminal. The terminal wiring structure 20 is a terminal wiring structure for a neutral point, and is integrally formed with twelve connection terminal portions 20b1 to 20b12 provided at a predetermined interval in a circumferential direction on an annular wiring portion 20a. Has a structure provided in the In addition, in the annular pedestal 16b of the terminal fixing base 16, a through-hole for passing a lead wire from a unit winding is formed corresponding to the through-hole h provided in each connection terminal portion. As shown in FIG. 7, a pair of lead wires of the unit winding 9 wound around the magnetic pole 5a are connected to a pair of connection terminal portions 20b1 and 17b1 provided adjacent to the magnetic pole 5a, and are connected to the magnetic pole 5b. A pair of lead wires of the wound unit winding 9 are connected to a pair of connection terminal portions 20b2 and 19 provided adjacent to the magnetic pole 5b.
b2, and a pair of lead wires of the unit winding 9 wound around the magnetic pole 5c are connected to a pair of connection terminals 20b3 and 18b2 provided adjacent to the magnetic pole 5c and wound around the magnetic pole 5d. A pair of lead wires of the unit winding 9 are connected to a pair of connection terminal portions 20b provided adjacent to the magnetic pole 5d.
4 and 17b2, and a pair of lead wires of each unit winding 9 are connected to a pair of connecting terminals located on both sides of each magnetic pole as shown in the following figures.

In this example, the terminal wiring structure 20 is arranged at a position closest to the terminal fixing base 16 side, and the terminal wiring structures 17 to 19 are sequentially superposed on the terminal fixing structure 16 at intervals. I have. The terminal wiring structures 17 to 20 are separated by an insulating spacer (not shown) so as not to contact with each other. After the connection of the lead wire to each connection terminal portion is completed, each of the terminal wiring structures 17 to 20 is molded with an insulating resin except for the terminals 17a to 19a. When such a terminal block 15 is used, it is sufficient to connect the lead wires to the connection terminal portions respectively arranged at positions close to the lead wires of the respective unit windings. Not only is it unnecessary to greatly improve workability, but also it becomes easy to automate manufacturing.

In the magnet rotor type electric motor of the type commonly called an IPM motor as in the above example, even if the pole pieces 4 of each magnetic pole are connected to each other by the connecting portions 6, the performance of the servomotor is not improved. There is no significant effect.

If the performance is affected to a certain extent when the pole pieces of the magnetic poles are connected to each other by the connecting portion, the connecting portion 6 is connected to the laser cutter after the magnetic pole assembly 7 is combined with the yoke 2. Or the like, or by cutting the entire inner peripheral portion of the magnetic pole assembly 7 until the connecting portions 6.
.. May be removed. The work of cutting or removing the connecting portions 6 is much easier than the work of individually fixing the magnetic poles 5 to the yoke 2, and the work of the stator for the rotating electric machine and the magnet rotor type electric motor is performed. Manufacturing is simplified. Further, the connection portions 6 may be processed to reduce the thickness in the radial direction without cutting or removing the connection portions 6 to reduce the influence of the connection portions 6.

[0029]

According to the present invention, the pole pieces of a plurality of magnetic poles are connected to the pole pieces of other adjacent magnetic poles via a connecting portion formed of an electromagnetic steel plate to form a magnetic pole assembly. Before combining the annular yoke and the magnetic pole assembly, the winding can be wound around the core of the magnetic pole, and the space factor of the winding can be increased. Further, the magnetic pole assembly is inserted as a unit into the annular yoke, and the fitting portion of the core of each magnetic pole can be simultaneously fitted to the fitted portion provided on the inner peripheral portion of the yoke. Therefore, there is an advantage that the operation of attaching a plurality of magnetic poles to the yoke can be performed in one operation, and the assembling operation is very simple.

[Brief description of the drawings]

FIG. 1 is a diagram showing a schematic configuration of a main part of an example of an embodiment applied to a three-phase AC servomotor which is a kind of a magnet rotor type electric motor commonly called an IPM type electric motor of the present invention.

FIG. 2 is a plan view of a yoke used in the example of FIG.

FIG. 3 is a plan view of a magnetic pole assembly used in the example of FIG. 1;

FIG. 4 is a plan view of a magnetic pole assembly on which windings used in the example of FIG. 1 are wound;

FIG. 5 is a plan view of a stator used in the example of FIG.

FIG. 6 is a plan view showing an example of a terminal block.

FIG. 7 is a diagram showing a positional relationship between a terminal block and a stator.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Stator iron core 2 Yoke 2c Groove part (fitting part) 3 Iron core part 4 Magnetic pole piece part 5 Magnetic pole 6 Connecting part 7 Magnetic pole assembly 8 Convex part (Mating part) 9 Unit winding 10 Stator for rotating electric machine 11 Stator core 12 Slot for inserting permanent magnet 13 Permanent magnet 14 Rotor

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Shinji Suzuki 1-15-1 Kita-Otsuka, Toshima-ku, Tokyo Inside Yamayo Denki Co., Ltd. No. 1 Inside Sanyo Denki Co., Ltd. (72) Inventor Yutaka Takeuchi 1-15-1 Kita-Otsuka, Toshima-ku, Tokyo (72) Inside Sanyo Electric Co., Ltd. F-term No. 15-No. 1 Yamato Denki Co., Ltd. F-term (reference) 5H002 AB05 AB06 AE08 5H615 AA01 BB01 BB05 PP01 PP06 PP28 QQ26 5H621 GA04 GA14 JK01

Claims (10)

[Claims] An annular yoke, an iron core on which a winding is wound, and a plurality of magnetic poles having a pole piece formed at one end of the iron core; Each of the plurality of magnetic poles is formed by laminating electromagnetic steel plates, and a plurality of fittings provided at the other end of the core of the plurality of magnetic poles are formed on an inner peripheral portion of the yoke. A stator core for a rotating electric machine fitted to the joint portion, wherein the magnetic pole piece portions of the plurality of magnetic poles are connected to the magnetic pole piece portions of the other magnetic poles adjacent to each other, and a connecting portion formed by the electromagnetic steel plate. A stator core for a rotating electric machine, wherein a magnetic pole assembly including the plurality of magnetic poles and the plurality of connecting portions is connected to each other through a magnetic pole assembly. 2. The magnetic pole assembly is formed by laminating annular magnetic steel sheets formed in an annular shape such that portions constituting the plurality of magnetic poles and portions constituting the plurality of connecting portions are alternately arranged. The stator core for a rotating electric machine according to claim 1, wherein the stator core is configured. 3. The rotating electric machine according to claim 1, wherein a radial thickness of the connecting portion is smaller than a minimum radial thickness of the pole piece of the magnetic pole. Stator core. 4. A stator core for a rotating electrical machine, comprising: an annular yoke, an iron core, and a plurality of magnetic poles having a pole piece formed at one end of the iron core, and the plurality of magnetic poles. The yoke and the plurality of magnetic poles are each formed by stacking electromagnetic steel plates, and the other end of the core portion of the plurality of magnetic poles The rotating machine stator, wherein the provided fitting portions are fitted to a plurality of fitted portions formed on an inner peripheral portion of the yoke, respectively, wherein the magnetic pole piece portions of the plurality of magnetic poles are adjacent to each other. The magnetic pole piece portion of the other magnetic pole is connected to the magnetic pole piece via a connecting portion formed by the electromagnetic steel plate to form a magnetic pole assembly including the plurality of magnetic poles and the plurality of connecting portions. Characteristic stator for rotating electric machines. 5. A unit winding concentratedly wound around a bobbin is fitted in the iron core portion of each of the plurality of magnetic poles, and a plurality of terminals to which lead wires of the stator winding are connected and the plurality of terminals. A terminal fixing base made of an insulating material to which the terminal is fixed.The terminal fixing base is disposed at a position corresponding to the plurality of magnetic poles and wound around the corresponding magnetic pole. A plurality of pairs of connection terminal portions to which the lead wires of the unit windings are connected, and a wiring portion that electrically connects the plurality of pairs of connection terminal portions and the plurality of terminals, are fixed. The plurality of terminals, the plurality of connection terminal portions, and the wiring portion include one terminal, a plurality of connection terminal portions electrically connected to the one terminal, the one terminal, and the plurality of connection terminals. Electrically connecting the connection terminal portion and the wiring 5. The rotating electric machine according to claim 4, wherein a wiring portion constituting a part of the portion is fixed to the terminal fixing base as a plurality of terminal wiring structures integrally formed by a metal plate. 6. stator. 6. A terminal wiring structure in which a plurality of said connecting terminal portions connected to a neutral point and a wiring portion interconnecting these connecting terminal portions are integrally formed by a metal plate. The stator for a rotating electric machine according to claim 5, wherein the stator is fixed to a terminal fixing base. 7. A stator core for a rotating electric machine, comprising: an annular yoke, an iron core, and a plurality of magnetic poles having a pole piece formed at one end of the iron core, and the plurality of magnetic poles. The yoke and the plurality of magnetic poles are each formed by laminating electromagnetic steel sheets, and are provided at the other end of the core portion of the plurality of magnetic poles. A method of manufacturing a stator for a rotating electrical machine, wherein a fitting portion is fitted to a plurality of fitted portions formed on an inner peripheral portion of the yoke, wherein the magnetic pole piece portions of the plurality of magnetic poles are provided. And a pole piece portion of another adjacent magnetic pole is formed through a connecting portion formed by the electromagnetic steel plate to form a magnetic pole assembly, wherein the magnetic pole assembly has a plurality of magnetic poles on the iron core portions. A stator winding is wound, and then the magnetic pole assembly is inserted inside the yoke. Method of manufacturing a rotary electric machine stator, characterized in that simultaneously fits to the plurality of the fitting portion of the fitting portion of the plurality of magnetic poles corresponding said yoke included in the pole assembly. 8. After assembling the magnetic pole assembly and the yoke, the connecting portion is cut or removed to form an adjacent 2nd pole.
The method for manufacturing a stator for a rotating electric machine according to claim 7, wherein the magnetic pole pieces are separated from each other or the thickness of the connecting portion in the radial direction is reduced. 9. An electromagnetic steel sheet for forming the magnetic pole assembly is punched from a portion located inside when the electromagnetic steel sheet for forming the yoke is punched from an electromagnetic steel sheet material, and the yoke is formed. The method for manufacturing a stator for a rotating electric machine according to claim 7, wherein the plurality of fitted portions are simultaneously formed when punching out an electromagnetic steel sheet for performing the punching. 10. A stator core for a rotating electrical machine, comprising: an annular yoke, an iron core, and a plurality of magnetic poles having a pole piece formed at one end of the iron core, and the plurality of magnetic poles. The yoke and the plurality of magnetic poles are each formed by stacking electromagnetic steel sheets, and the other end of the core portion of the plurality of magnetic poles A stator in which the provided fitting portions are fitted to a plurality of fitted portions formed on the inner peripheral portion of the yoke, and electromagnetic steel sheets are laminated and arranged inside the stator; Rotor core, and a plurality of permanent magnet insertion slots formed at intervals in the circumferential direction inside the rotor core, and permanent magnets constituting rotor magnetic poles in the plurality of permanent magnet insertion slots, respectively. With a built-in permanent magnet rotor A magnet rotor type electric motor, wherein the magnetic pole piece portions of the plurality of magnetic poles are connected to the magnetic pole piece portions of the other adjacent magnetic poles via a connecting portion formed by the electromagnetic steel plate, and A magnet rotor type electric motor, wherein a magnetic pole assembly including a magnetic pole and a plurality of the connecting portions is configured.