JP2002136006A - Permanent magnet rotating electric machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a permanent magnet rotating electric machine capable of easily fixing a plurality of permanent magnets without using an end cover when the plurality of permanent magnets is used for one pole. SOLUTION: A plurality of permanent magnets 13 is attracted via a magnet spacer 15 to each pole by inserting the magnet spacer 15 made of a magnetic material into a magnet-insertion hole 12a between the plurality of permanent magnets 13 of each pole. In another way, however, permanent magnets of all polarities are attracted to each other via the magnet spacer by dividing an iron core into a plurality of segments at every joint of the plurality of permanent magnets of each pole and by mounting one set of a magnet spacer, which is formed almost into the same shape with the cross section of the iron core but has no magnet hole, between the iron cores and by interposing the magnet spacer between the plurality of permanent magnets.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a permanent magnet type rotating electric machine, and more particularly, to a permanent magnet fixing structure in a permanent magnet type rotating electric machine having an embedded magnet.

[0002]

2. Description of the Related Art In a permanent magnet type rotating electric machine (motor or generator) of a magnet embedded type, a rotor core or a stator core is generally a laminated core formed by laminating a large number of silicon steel plates. When the core stacking length (axial length) of the laminated core is long, usually, a plurality of permanent magnets shorter than the core stacking margin are used to reduce the magnet length for one pole (having almost the same length as the core stacking margin). ). This is because it is difficult to manufacture an integral permanent magnet having a length commensurate with the iron core allowance.

FIG. 5A is a perspective view showing a rotor structure of a conventional permanent magnet type motor having a magnet embedded therein, and FIG. 5B is a view of a silicon steel plate constituting a rotor core of the permanent magnet type motor. FIG. 5 (c) is a perspective view showing a one-pole permanent magnet embedded in the rotor core.

As shown in these figures, a rotor 1 has a configuration in which a permanent magnet 3 is embedded as a field source in a rotor core 2. The illustrated example shows the case of four poles.
The rotor core 2 is a laminated core formed by laminating a number of silicon steel plates 4 in the axial direction of the rotor core 2 (hereinafter simply referred to as the axial direction). A shaft hole 4a is formed in the center of the silicon steel plate 4.
Are formed, and four magnet holes 4 a are formed at a peripheral portion of the silicon steel plate 4 at predetermined intervals in a circumferential direction of the silicon steel plate 4.

Therefore, when the silicon steel plates 4 are stacked, the magnet holes 4 of the respective silicon steel plates 4 continue in the stacking direction, so that the magnet insertion holes penetrating the rotor core 2 along the axial direction. Four (2 poles) 2a are formed at predetermined intervals in the circumferential direction of the rotor core 2. Since the rotor core 2 is long, a plurality of (two in the illustrated example) permanent magnets 3 are provided in each magnet insertion hole 2a.
Is inserted so that the entire length of the permanent magnet becomes a length commensurate with the core stacking allowance of the rotor core 2. The cross-sectional shape of the magnet insertion hole 2a (that is, the magnet hole shape of the silicon steel plate) is slightly larger than the cross-sectional shape of the permanent magnet 3, and the permanent magnet 3 inserted into the magnet insertion hole 2a is made of an adhesive. Is fixed to the rotor core 2.

In such a permanent magnet type electric motor, a repulsive force acts between two permanent magnets 3 constituting the respective magnetic poles, so that end covers 5 are attached to both axial ends of the rotor core 2. Thus, the two permanent magnets 3 are pressed from both sides in the axial direction.

[0007]

As described above, in the conventional permanent magnet type rotating electric machine, when a plurality of permanent magnets are used as one pole, it is necessary to attach an end cover to suppress the repulsive force between the permanent magnets. However, this end cover generally needs to be formed of a non-magnetic material. In addition, since the nonmagnetic end cover is generally expensive, the cost of the rotating electric machine is increased.

In view of the above problems, the present invention can easily fix a plurality of permanent magnets constituting each pole without using an end cover when a plurality of permanent magnets are used as one pole. An object of the present invention is to provide a permanent magnet type rotating electric machine that can be used.

[0009]

Means for Solving the Problems A first method for solving the above problems is described below.
The permanent magnet type rotating electric machine according to the present invention is characterized in that a plurality of magnet insertion holes penetrating along the axial direction of the rotor core are formed in the rotor core at predetermined intervals in the circumferential direction of the core, and these magnets are formed. By inserting a plurality of permanent magnets into the insertion holes, respectively, in a permanent magnet type rotating electric machine of a magnet embedded type formed with respective magnetic poles, a magnet spacer formed of a magnetic material is inserted into each of the plurality of magnet insertion holes. The plurality of permanent magnets are inserted and interposed between the plurality of permanent magnets, so that the plurality of permanent magnets are attracted to each pole by the magnet spacer.

A permanent magnet type rotating electric machine according to a second aspect of the present invention
In the stator core, a plurality of magnet insertion holes penetrating along the axial direction of the core are formed at predetermined intervals in the circumferential direction of the core, and a plurality of permanent magnets are respectively formed in these magnet insertion holes. In the permanent magnet type rotating electric machine of the magnet embedded type formed by forming the respective magnetic poles, a magnet spacer formed of a magnetic material is inserted into each of the plurality of magnet insertion holes, and the magnet spacer is inserted. By interposing between multiple permanent magnets,
The plurality of permanent magnets are attracted to each pole by the magnet spacer.

A permanent magnet type rotating electric machine according to a third aspect of the present invention
In the rotor core, a plurality of magnet insertion holes penetrating along the axial direction of the core are formed at predetermined intervals in the circumferential direction of the core, and a plurality of permanent magnets are respectively formed in these magnet insertion holes. In the permanent magnet type rotating electric machine of the magnet embedded type formed by forming the respective magnetic poles, the iron core is divided into a plurality in the axial direction at the joint of the plurality of permanent magnets in each pole, these A magnet is formed between the plurality of permanent magnets between the plurality of permanent magnets by forming a magnetic material between the plurality of permanent magnets and forming the magnet in substantially the same cross-sectional shape as that of the core and having no magnet hole. By being interposed, permanent magnets of all poles are attracted by the magnet spacer.

A permanent magnet type rotating electric machine according to a fourth aspect of the present invention
In the stator core, a plurality of magnet insertion holes penetrating along the axial direction of the core are formed at predetermined intervals in the circumferential direction of the core, and a plurality of permanent magnets are respectively formed in these magnet insertion holes. In the permanent magnet type rotating electric machine of the magnet embedded type formed by forming the respective magnetic poles, the iron core is divided into a plurality in the axial direction at the joint of the plurality of permanent magnets in each pole, these A magnet is formed between the plurality of permanent magnets between the plurality of permanent magnets by forming a magnetic material between the plurality of permanent magnets and forming the magnet in substantially the same cross-sectional shape as that of the core and having no magnet hole. By being interposed, permanent magnets of all poles are attracted by the magnet spacer.

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings.

<First Embodiment> FIG. 1A is a perspective view showing a rotor structure of a permanent magnet type electric motor of a magnet embedded type according to a first embodiment of the present invention, and FIG. FIG. 1C is a perspective view showing a permanent magnet and a magnet spacer for one pole embedded in a rotor core of a motor of the type, and FIG. 1C shows the permanent magnet and the magnet spacer shown in FIG. It is a perspective view.

As shown in these figures, the rotor 11 has a structure in which a permanent magnet 13 is embedded in a rotor core 12 as a field source. The illustrated example shows the case of four poles. The rotor core 12 is a laminated core formed by laminating a number of silicon steel plates 14 in the axial direction of the rotor core 12 (hereinafter, simply referred to as the axial direction). A shaft hole 14a is formed at the center of the silicon steel plate 14, and four magnet holes 14a are formed at a peripheral portion of the silicon steel plate 14 at predetermined intervals in a circumferential direction of the silicon steel plate 14. .

Therefore, when the silicon steel plates 14 are stacked, the magnet holes 14a of the respective silicon steel plates 14 are continuous in the stacking direction, so that the magnet insertion holes penetrating the rotor core 12 along the axial direction. Four (12 poles) 12a are formed at predetermined intervals in the circumferential direction of the rotor core 12.
Since the rotor core 2 is a long one, a plurality (two in the illustrated example) is provided in each magnet insertion hole 12a.
) Permanent magnets 13 are inserted, so that the entire length of the permanent magnets becomes a length commensurate with the allowance of the core of the rotor core 12. The cross-sectional shape of the magnet insertion hole 12a (that is, the magnet hole shape of the silicon steel plate) is formed to be slightly larger than the cross-sectional shape of the permanent magnet 13, and the permanent magnet 13 inserted into the magnet insertion hole 12a is made of an adhesive. The rotor is fixed to the rotor core 12.

In the first embodiment, rectangular magnet spacers 15 made of a magnetic material are inserted into the four magnet insertion holes 12a, and these magnet spacers 15 are connected to two permanent magnets of each pole. 13 (seam). As a result, at each magnetic pole, an attractive force acts between the two permanent magnets 13 and the magnet spacer 15 magnetized by the permanent magnets 13, so that two permanent magnets are provided for each pole by the magnet spacer 15. 13 can be absorbed and fixed. Therefore, the two permanent magnets 13 constituting the respective poles can be easily fixed without using an expensive end cover or the like, and the number of parts can be reduced. Can be achieved.

The magnet spacer 15 has the same or substantially the same cross-sectional shape as that of the permanent magnet 13, so that the permanent magnet 13 can be attracted more reliably. I have. Also,
The thickness of the magnet spacer 15 may be appropriately selected according to the strength and shape of the magnetic force of the permanent magnet 13 so as to have an appropriate thickness sufficient to suppress the repulsive force between the permanent magnets (adsorb the permanent magnet).

<Second Embodiment> In the first embodiment, the case where a permanent magnet is used for the rotor has been described. However, when a permanent magnet is used for the stator, the same magnet spacer as that of the first embodiment is used. By using the same, the same effect as described above can be obtained. Hereinafter, a case where a permanent magnet is used for the stator will be described in detail.

FIG. 2 is a perspective view showing a stator structure of a permanent magnet type electric motor with embedded magnets according to a second embodiment of the present invention. As shown in the figure, the stator 21 is a stator core 2
2, a permanent magnet 23 is embedded as a field source. The stator core 22 is a laminated core formed by laminating a number of silicon steel plates 24 in the axial direction of the stator core 22 (hereinafter, simply referred to as the axial direction). The silicon steel plate 24 is punched at its center to form a ring shape, and has four magnet holes 24a formed at the periphery thereof at predetermined intervals in the circumferential direction of the silicon steel plate 24.

Therefore, when the silicon steel plates 24 are stacked, the magnet holes 24a of the respective silicon steel plates 24 are continuous in the stacking direction, so that the magnet insertion holes penetrating the rotor core 22 along the axial direction. Four (22 poles) 22a are formed at predetermined intervals in the circumferential direction of the rotor core 12.
Since the rotor core 22 is long,
Each magnet insertion hole 22a has a plurality (two in the illustrated example).
) Permanent magnets 23 are inserted so that the entire length of the permanent magnets becomes a length commensurate with the core stacking allowance of the rotor core 22. The cross-sectional shape of the magnet insertion hole 22a (that is, the magnet hole shape of the silicon steel plate) is formed slightly larger than the cross-sectional shape of the permanent magnet 23, and the permanent magnet 23 inserted into the magnet insertion hole 22a is made of an adhesive. Is fixed to the rotor core 22.

In the second embodiment, rectangular magnet spacers 25 made of a magnetic material are inserted into the four magnet insertion holes 22a, and these magnet spacers 25 are connected to two permanent magnets of each pole. 23 (seam). As a result, at each magnetic pole, an attractive force acts between the two permanent magnets 23 and the magnet spacer 25 magnetized by the permanent magnets 23. Therefore, the magnet spacer 25 causes two permanent magnets for each pole. 23 can be fixed by suction. Therefore, the two permanent magnets 23 constituting the respective poles can be easily fixed without using an expensive end cover or the like, and the number of parts can be reduced. Can be achieved.

The magnet spacer 25 has the same or substantially the same cross-sectional shape as that of the permanent magnet 23, so that the permanent magnet 23 can be attracted more reliably. I have. Also,
The thickness of the magnet spacer 25 may be appropriately selected according to the strength and shape of the magnetic force of the permanent magnet 23 so as to have an appropriate thickness sufficient to suppress the repulsive force between the permanent magnets (adsorb the permanent magnets).

<Embodiment 3> FIG. 3A is a perspective view showing a rotor structure of a permanent magnet type electric motor with embedded magnets according to Embodiment 3 of the present invention, and FIG. FIG. 3 (c) is a front view of the magnet spacer, in which a permanent magnet and a magnet spacer for one pole embedded in the rotor core are extracted and shown in the electric motor. Note that, in the third embodiment, the configuration is the same as that of the first embodiment except for the configuration related to the magnet spacer. Therefore, in FIG.
The overlapping detailed description here is omitted.

As shown in FIG. 3, the rotor 31 has a configuration in which the permanent magnet 13 is embedded in the rotor core 12.
That is, four (4 poles) magnet insertion holes 12a are formed in the rotor core 12 at predetermined intervals in the circumferential direction of the rotor core 12 so as to penetrate along the axial direction of the rotor core 12. At the same time, a plurality of (two in the illustrated example) permanent magnets 13 are inserted into these magnet insertion holes 12a to form respective magnetic poles.

In the third embodiment, the rotor core 12 is divided into two parts in the axial direction at the joints of the two permanent magnets 13 at the respective poles. A disk-shaped magnet spacer 35 is interposed. That is, the magnet spacer 35 is laminated together with the silicon steel plate 14. The magnet spacer 35 is formed of a magnetic material in a cross-sectional shape of the rotor core 12, that is, substantially the same as the shape of the silicon steel plate 14 constituting the rotor core 12, and has a magnet hole (the magnet of the silicon steel plate 14 (See hole 14b).
A shaft hole 35a is formed in the center of the magnet spacer 35. By arranging the magnet spacer 35 between the rotor cores 12 as described above, the magnet spacer 35 is interposed between the two permanent magnets 13 of each pole (seam).

As a result, the permanent magnets 13 of all poles
Since an attractive force acts between the magnet spacer 35 and the magnet spacer 35 magnetized by the permanent magnet 13, the permanent magnets 13 of all the poles can be attracted and fixed by the magnet spacer 35. Therefore, the two permanent magnets 13 constituting the respective poles can be easily fixed without using an expensive end cover or the like, and the number of parts can be reduced. Can be achieved.

The thickness of the magnet spacer 35 is appropriately determined according to the strength and shape of the magnetic force of the permanent magnet 13 so as to have an appropriate thickness sufficient to suppress the repulsive force between the permanent magnets (adsorb the permanent magnets). You just have to choose.

Fourth Embodiment In the third embodiment, the case where a permanent magnet is used for the rotor has been described. However, even when a permanent magnet is used for the stator, the same magnet spacer as that of the third embodiment is used. By using the same, the same effect as described above can be obtained. Hereinafter, a case where a permanent magnet is used for the stator will be described in detail.

FIG. 4A is a perspective view showing a stator structure of a permanent magnet type electric motor having a magnet embedded type according to a fourth embodiment of the present invention. FIG. 4B is a front view of a magnet spacer provided on a rotor core of the permanent magnet type electric motor. In addition,
Since the configuration of the fourth embodiment is the same as that of the second embodiment except for the configuration related to the magnet spacer, the same reference numerals in FIG. 4 denote the same parts as in FIG. 2, and the detailed description thereof will not be repeated. Omitted.

As shown in FIG. 3, the stator 41 has a structure in which a permanent magnet 23 is embedded in a rotor core 22.
That is, the rotor core 22 has four magnet insertion holes 22a penetrating along the axial direction of the rotor core 22 at predetermined intervals in the circumferential direction of the rotor core 22 (for four poles). At the same time, a plurality of (two in the illustrated example) permanent magnets 23 are inserted into these magnet insertion holes 22a to form respective magnetic poles.

In the fourth embodiment, the rotor core 22 is divided into two parts in the axial direction at the joints of the two permanent magnets 23 at the respective poles. A ring-shaped magnet spacer 45 is interposed. That is, the magnet spacer 45 is laminated together with the silicon steel plate 24. The magnet spacer 45 is made of a magnetic material, and has a cross-sectional shape of the rotor core 22.
That is, it is formed integrally with the shape of the silicon steel plate 24 constituting the rotor core 22 and has substantially no magnet hole (see the magnet hole 24a of the silicon steel plate 24). By arranging the magnet spacer 45 between the rotor cores 22 as described above, the magnet spacer 45 is interposed (seam) between the two permanent magnets 23 of each pole.

Thus, the permanent magnets 23 of all poles
Since an attractive force acts between the magnet spacer 45 and the magnet spacer 45 magnetized by the permanent magnet 23, the permanent magnets 23 of all poles can be attracted and fixed by the magnet spacer 45. Therefore, the two permanent magnets 23 constituting the respective poles can be easily fixed without using an expensive end cover or the like, and the number of parts can be reduced, so that the cost of the electric motor can be reduced. be able to.

The thickness of the magnet spacer 45 is appropriately selected according to the strength and shape of the magnetic force of the permanent magnet 23 so as to have an appropriate thickness sufficient to suppress the repulsive force between the permanent magnets (adsorb the permanent magnets). I just need.

The present invention can be widely applied to various types of rotating electric machines (motors or generators) using permanent magnets, such as outer rotor type permanent magnet type electric motors.

[0036]

As described above in detail with the embodiments of the present invention, according to the permanent magnet type rotating electric machine of the first invention, the magnet insertion penetrating the rotor core along the axial direction of the core. A plurality of holes are formed at predetermined intervals in the circumferential direction of the iron core, and a plurality of permanent magnets are inserted into these magnet insertion holes to form respective magnetic poles. In the permanent magnet type rotating electric machine, a magnet spacer formed of a magnetic material is inserted into each of the plurality of magnet insertion holes, and the magnet spacer is interposed between the plurality of permanent magnets. By configuring to attract the plurality of permanent magnets for each pole, each pole can be easily configured without using an expensive end cover or the like. That a plurality of can be fixed permanent magnet, also because it can be possible to reduce the number of components, it is possible to reduce the cost of the rotary electric machine.

According to the permanent magnet type rotating electric machine of the second aspect of the present invention, the stator core has the magnet insertion holes penetrating along the axial direction of the core with a predetermined interval in the circumferential direction of the core. By forming a plurality of permanent magnets into these magnet insertion holes, a plurality of permanent magnets are inserted into these magnet insertion holes, thereby forming a magnetic pole. By inserting a magnet spacer formed of a magnetic material and interposing the magnet spacer between the plurality of permanent magnets, the plurality of permanent magnets are attracted to each pole by the magnet spacer. , It is possible to easily fix a plurality of permanent magnets constituting each pole without using an expensive end cover or the like, Since it is also possible to reduce the goods number, it is possible to reduce the cost of the rotary electric machine.

Further, according to the permanent magnet type rotating electric machine of the third invention, the rotor core has the magnet insertion holes penetrating along the axial direction of the core, and has a predetermined interval in the circumferential direction of the core. By inserting a plurality of permanent magnets into these magnet insertion holes and forming a plurality of magnetic poles, respectively, in the permanent magnet type rotating electric machine of the magnet embedded type, The iron core is divided into a plurality of parts in the axial direction at the joints of the permanent magnets, and an integral magnet spacer formed between the iron cores with a magnetic material to have substantially the same cross-sectional shape as the iron core and having no magnet hole. The magnet spacer is interposed between the plurality of permanent magnets, so that the permanent magnets of all poles are attracted by the magnet spacer. It is possible to easily fix a plurality of permanent magnets constituting each pole without using a complicated end cover, etc., and also to reduce the number of parts, thereby reducing the cost of the rotating electric machine. it can.

Further, a permanent magnet type rotating electric machine according to a fourth aspect of the present invention
In the stator core, a plurality of magnet insertion holes penetrating along the axial direction of the core are formed at predetermined intervals in the circumferential direction of the core, and a plurality of permanent magnets are respectively formed in these magnet insertion holes. In the permanent magnet type rotating electric machine of the magnet embedded type formed by forming the respective magnetic poles, the iron core is divided into a plurality in the axial direction at the joint of the plurality of permanent magnets in each pole, these A magnet is formed between the plurality of permanent magnets between the plurality of permanent magnets by forming a magnetic material between the plurality of permanent magnets and forming the magnet in substantially the same cross-sectional shape as that of the core and having no magnet hole. By interposing, the permanent magnets of all poles are attracted by the same magnet spacer, so that each pole can be easily attached without using an expensive end cover. It can be fixed a plurality of permanent magnets formed, also, since it is also possible to reduce the number of components, it is possible to reduce the cost of the rotary electric machine.

[Brief description of the drawings]

FIG. 1A is a perspective view showing a rotor structure of an embedded magnet type permanent magnet electric motor according to Embodiment 1 of the present invention;
(B) is a perspective view showing a permanent magnet and a magnet spacer of one pole embedded in a rotor core in the permanent magnet type electric motor, and (c) is a view of separating the permanent magnet and the magnet spacer shown in (b). FIG.

FIG. 2 is a perspective view showing a stator structure of a permanent magnet type electric motor with embedded magnets according to Embodiment 2 of the present invention.

FIG. 3A is a perspective view showing a rotor structure of a permanent magnet type electric motor with embedded magnets according to a third embodiment of the present invention;
FIG. 2B is a perspective view illustrating a permanent magnet and a magnet spacer of one pole embedded in a rotor core in the permanent magnet motor, and FIG. 2C is a front view of the magnet spacer.

FIG. 4A is a perspective view showing a stator structure of a permanent magnet type electric motor with embedded magnets according to a fourth embodiment of the present invention.
(B) is a front view of a magnet spacer provided on a rotor core of the permanent magnet type electric motor.

FIG. 5 (a) is a perspective view showing a rotor structure of a conventional permanent magnet type electric motor with embedded magnets, FIG. 5 (b) is a front view of a silicon steel plate constituting a rotor core of the permanent magnet type electric motor,
FIG. 3C is a perspective view illustrating a one-pole permanent magnet embedded in the rotor core.

[Explanation of symbols]

 11, 31 Rotor 12 Rotor core 12a Magnet insertion hole 13 Permanent magnet 14 Silicon steel plate 14a Shaft hole 14b Magnet hole 15, 25 Magnet spacer 21, 41 Stator 22 Stator iron core 22a Magnet insertion hole 23 Permanent magnet 24 Silicon Steel plate 24a Magnet hole 35, 45 Magnet spacer 35a Shaft hole

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H02K 21/14 H02K 21/14 M 21/26 21/26 M

Claims (4)

[Claims] 1. A plurality of magnet insertion holes penetrating along the axial direction of the rotor core at predetermined intervals in a circumferential direction of the core, and a plurality of magnet insertion holes are formed in each of the magnet insertion holes. By inserting a plurality of permanent magnets, in a permanent magnet type rotating electric machine of a magnet embedded type in which respective magnetic poles are formed, a magnet spacer formed of a magnetic material is inserted into each of the plurality of magnet insertion holes, A permanent magnet type rotating electric machine characterized in that the magnet spacer is interposed between the plurality of permanent magnets so that the magnet spacer attracts the plurality of permanent magnets for each pole. . 2. A plurality of magnet insertion holes penetrating along the axial direction of the stator core at predetermined intervals in a circumferential direction of the core, and each of the magnet insertion holes is formed in each of the magnet insertion holes. By inserting a plurality of permanent magnets, in a permanent magnet type rotating electric machine of a magnet embedded type in which respective magnetic poles are formed, a magnet spacer formed of a magnetic material is inserted into each of the plurality of magnet insertion holes, A permanent magnet type rotating electric machine characterized in that the magnet spacer is interposed between the plurality of permanent magnets so that the magnet spacer attracts the plurality of permanent magnets for each pole. . 3. A plurality of magnet insertion holes penetrating the rotor core along the axial direction of the core at predetermined intervals in a circumferential direction of the core, and the magnet insertion holes are respectively formed in the magnet insertion holes. In a permanent magnet type rotating electric machine of a magnet embedded type in which a plurality of permanent magnets are inserted to form respective magnetic poles, a plurality of the iron cores are axially provided at seams of the plurality of permanent magnets at each pole. The magnet spacer is formed between the iron cores by a magnetic material and formed substantially in the same cross-sectional shape as that of the iron core, and an integral magnet spacer having no magnet hole is interposed therebetween. A permanent magnet type rotating electric machine characterized in that permanent magnets of all poles are attracted by the magnet spacer by being interposed between permanent magnets. 4. A plurality of magnet insertion holes penetrating along the axial direction of the stator core at predetermined intervals in a circumferential direction of the core, and each of the magnet insertion holes is formed in each of the magnet insertion holes. In a permanent magnet type rotating electric machine of a magnet embedded type in which a plurality of permanent magnets are inserted to form respective magnetic poles, a plurality of the iron cores are axially provided at seams of the plurality of permanent magnets at each pole. The magnet spacer is formed between the iron cores by a magnetic material and formed substantially in the same cross-sectional shape as that of the iron core, and an integral magnet spacer having no magnet hole is interposed therebetween. A permanent magnet type rotating electric machine characterized in that permanent magnets of all poles are attracted by the magnet spacer by being interposed between permanent magnets.