DE102008044127A1 - Embedded magnet type motor has protrusion which is formed in accommodation hole of core sheet and is protruded from anticlockwise rotating side along radial direction of magnet - Google Patents

Abstract

The motor comprises a protrusion (8e) which is formed in an accommodation hole (8b) of a core sheet (11) and is protruded from an anticlockwise rotating side along the radial direction of a magnet (9). The number of protrusions is larger than half of width along orthogonal direction in the accommodation hole. The core sheet is laminated on a rotor core (8) in such a manner that the protrusion is penetrated along the axial direction of the accommodation hole.

Description

BACKGROUND OF THE INVENTION

The The present invention relates to an embedded magnet motor and a manufacturing method for this.

A rotor core of an embedded magnetic motor used in the Japanese Patent Publication Laid-open No. 2007-195391 discloses radial receiving slots, the number of which is expressed by P / 2, first inclined receiving slots, the number of which is expressed by P / 2, and second inclined receiving slots, the number of which is expressed by P / 2. The radial receiving slots extend in a substantially radial direction of the rotor core when viewed from the axial direction. A pair of each a first inclined receiving slot and the associated second inclined receiving slot forms a V-shaped receiving slot. Each of the radial receiving slots receives a radial magnet. Each of the first inclined receiving slots receives a first inclined magnet. Each of the second inclined receiving slots receives a second inclined magnet. The radial magnets and the adjacent first inclined magnet each form a north pole. The radial magnets and the adjacent second inclined magnet each form a south pole. As a result, north poles whose number is expressed by P / 2 and south poles whose number is expressed by P / 2 have been obtained.

Radial inner ends of the radial magnets of the above publication are without any gaps between walls the radially inner ends of the radial receiving slots enclosed.

SUMMARY OF THE INVENTION

Corresponding It is an object of the present invention to provide a new embedded magnetic motor and a manufacturing method for this provide.

One aspect of the present invention provides an embedded magnetic motor comprising a rotor. An axis of the rotor is called a rotor axis. The rotor comprises a rotor core, radial magnets whose number is expressed by P / 2, first oblique magnets whose number is expressed by P / 2, and second oblique magnets whose number is expressed by P / 2. The rotor core includes radial receiving slots whose number is expressed by P / 2, first inclined receiving slots whose number is expressed by P / 2, and second inclined receiving slots whose number is expressed by P / 2. The radial receiving slots, the first inclined receiving slots and the second inclined receiving slots extend completely through the rotor core in the axial direction. The radial receiving slots extend substantially in a radial direction of the rotor core. The first inclined receiving slots and the second inclined receiving slots extend linearly inclined with respect to the radial receiving slots. A pair of each a first inclined receiving slot and the associated second inclined receiving slot forms a V-shaped receiving slot. The tip of the V-shape is directed radially outward from the rotor core. The radial receiving slots and the V-shaped receiving slots are arranged alternately in the circumferential direction of the rotor core. Each of the radial receiving slots receives one of the radial magnets. Each of the first inclined receiving slots receives one of the first inclined magnets. Each of the second inclined receiving slots receives one of the second inclined magnets. Each of the radial magnets is disposed between one of the first inclined magnets and one of the second inclined magnets. Each radial magnet and the circumferentially adjacent first oblique magnet form either a north pole or a south pole. Each radial magnet and the circumferentially adjacent second oblique magnet form the other north pole or south pole. As a result, north poles whose number is expressed by P / 2 and south poles whose number is expressed by P / 2 have been obtained. That is, the number of magnetic poles of the rotor is expressed by P. The rotor core is formed by laminating a plurality of core laminations in the axial direction. Each core sheet includes preformed radial receiving slots, the number of which is expressed by P / 2. The preformed radial receiving slots are distributed in the circumferential direction of the core sheet. The radial receiving slots are formed by laminating the preformed radial receiving slots. Some of the preformed radial slots are short slots, the remainder are long slots. The distance between a radially inner end of each short slot and the rotor axis is referred to as the first radial distance R1. The distance between a radially inner end of each elongated slot and the rotor axis is referred to as a second radial distance R2. A setting is made so that R2 <R1 is satisfied. The short slots are arranged at some parts of each radial receiving slot along the axial direction. As a result, the radially inner ends of the short slots prevent the radial magnets from radial movement to move inward.

To In another aspect of the present invention is the radial Dimension of the preformed radial receiving slots larger as the radial dimension of the radial magnets. Every core sheet comprises an appendage which is in at least one of the preformed protrudes radial receiving slots. A vertical to the radial direction Direction is called width direction. Every extension stands from only one of the broad sides of the preformed radial receiving slot before. The extensions are on at least some parts of each radial receiving slot in the axial direction arranged. As a result, the extensions prevent the radial Magnets to move radially inward.

To In another aspect of the present invention, each core sheet comprises preformed radial receiving slots, the number of which is expressed by P / 2 is, first preformed inclined receiving slots, the number of which is expressed by P / 2 and the second preformed one slanted receiving slots, the number by P / 2 is expressed. The preformed radial receiving slots are distributed in the circumferential direction of the core sheet. The radial Pick-up slots are by layering the preformed formed radial receiving slots. The first slanted Pick-up slots are by layering the first preformed formed inclined receiving slots. The second inclined receiving slots are by layering arrangement the second preformed inclined receiving slots educated. For some of the preformed radial receiving slots in each core sheet are two-sided connection slots, the rest around independent slots. The radially inner end Each two-sided communication slot is both with a circumferential adjacent first preformed inclined receiving slot as well as the second preformed inclined receiving slot in connection. Each independent slot is not included the first preformed inclined receiving slot still with the second preformed inclined receiving slot in connection. An inner bridge is between each independent Slot and the associated first preformed inclined Receiving slot provided. Another inner bridge is between each independent slot and the associated one provided second preformed inclined receiving slot. The independent slots are radial at some parts of each Receiving slot arranged along the axial direction. In the result prevent the inner bridges the corresponding first inclined Magnets and the second inclined magnet on it, to move radially inwards.

To In another aspect of the present invention are some of preformed radial receiving slots at least in one of the core sheets one-sided connection slots. Each of the unilateral connection slots is either with a first preformed inclined Receiving slot or the second preformed inclined Recording slot in conjunction, and stands with each other not in contact. And indeed, an inner bridge between both the other first preformed inclined Receiving slot as well as the second preformed inclined Receiving slot and the one-sided connection slot provided. The unilateral connection slots are at least in some parts each radial receiving slot arranged along the axial direction.

To In another aspect of the present invention are some of preformed radial receiving slots at least in one of the core sheets projecting connection slots. A radially inner end of each projecting connecting slot is with the circumferential adjacent first inclined receiving slot and the second inclined receiving slot in connection. The radially inner end of the projecting connection slot is with a Restrictionsfortsatz provided, the radially after protrudes outside. The projecting connection slots are at least at some parts of each radial receiving slot arranged along the axial direction. As a result, the prevent Restricting extensions the radial magnets on it, to move radially inwards. The constraint extensions prevent the first inclined magnets and the second inclined magnets to move radially inwards, which prevents the first inclined Magnets and the second inclined magnets the radial Touch magnets.

According to another aspect of the present invention, a direction is referred to as a width direction, which is seen from the axial direction perpendicular to the direction in which extends each radia le receiving slot. A slot is provided at a radially outer end of each radial receiving slot. A second width of the wide slots is greater than a first width of the radial magnets. Each radial receiving slot is formed with an extension which lies radially further inward than the corresponding slot. The width of a portion of the radial receiving slot that is narrowed by the extension is smaller than the first width of the radial magnet. As a result, the extensions prevent the radial magnets from moving radially outward. The radial dimension of the slot is referred to as the radial width dimension Y. The thickness of each core sheet is referred to as core sheet thickness T. An adjustment is made, that Y ≤ 4T is satisfied.

To In another aspect of the present invention is an outer bridge between the radially outer end of each radial Receiving slot and an outer peripheral surface arranged the rotor core. The radial dimension of the outer bridge is referred to as AB. A V-slot outer bridge is between the radially outer end of each V-shaped Receiving slot and the outer peripheral surface provided the rotor core. In the radial dimension of the V-slot outer bridge it is also AB. A bridge between slanted slits is between the radially outer end of each first inclined receiving slot and the radially outer end the associated second inclined receiving slot intended. The width of the bridge between slanted slots is called the intermediate slant bridge bridge dimension BB designated. A setting is made so that BB> AB meets is.

To Another aspect of the present invention is an inner bridge between the radially inner end of each radial receiving slot and the radially inner end of the associated first inclined Pick-up slot arranged. Another inner bridge is between the radially inner end of each radial receiving slot and the radially inner end of the associated second inclined Receiving slot provided. The width of the inner bridges is referred to as inner bridge dimension CB. A bridge between slanted slots is between the radially outer End of each first slanted receiving slot and the radially outer end of the associated provided second inclined receiving slot. The Width of the bridge between slanted slits becomes referred to as the intermediate oblique slot bridge dimension BB. A setting is made so that BB> CB is satisfied.

To In another aspect of the present invention, the embedded includes Magnetic motor, a magnetic sensor. The magnetic sensor detects a rotation of the rotor by imparting an axial magnetic flux leakage from the rotor is detected. The magnetic sensor is in a radially outer Area disposed facing an axial end surface of the rotor. The magnetic sensor detected in the radially outer region the magnetic flux. Positive and negative poles of the magnetic flux are in a cycle of magnetic flux change during a period only reversed once when the rotor is rotated is, and the magnetic sensor runs between the first inclined Magnet and the second inclined magnet.

One Another aspect of the present invention provides a manufacturing method ready for an embedded magnet motor. The procedure comprising: a step of arranging the magnetic sensor to the axial Facing the end surface of the rotor; and a measuring step for measuring magnetic characteristics generated by the magnetic sensor all radial positions are detected when the radial Position of the magnetic sensor changed. The method comprises moreover, a positioning step for determining the radially outer region based on the Result of the measuring step and to determine the position of the Magnetic sensor in the radially outer region.

Other Aspects and advantages of the invention will become apparent from the following description in conjunction with the accompanying drawings, which exemplify the principles of the invention.

BRIEF DESCRIPTION OF THE DRAWINGS

The Invention, together with its objects and advantages, best by reference to the following description of the presently preferred Embodiments together with the attached Understand drawings:

1 Fig. 10 is a plan view illustrating an embedded magnetic motor according to a first embodiment of the present invention;

1A FIG. 11 is an enlarged view illustrating an inner end of one of the radial receiving slots of FIG 1 represents;

2 is a plan view of the core sheet of 1 represents;

3 is an enlarged perspective view showing the rotor core of 1 and is a perspective view with respect to a radially inner portion seen from a radially outer portion forth;

4 is a characteristic diagram showing the relationship between the in 1A shown overlap dimension R and the magnetization rate of the radial magnets. The overlap dimension R is an overlap amount of the mating surface SX and the short slit;

5 Fig. 10 is a plan view illustrating an embedded magnetic motor according to a second embodiment;

6 is a plan view of the core sheet of 5 represents;

7 is an enlarged perspective View the rotor core of 5 and is a perspective view looking at a radially outer portion seen from a radially inner portion;

8th is one too 7 opposite enlarged perspective view, and is a perspective view with respect to a radially inner portion seen from a radially outer portion forth;

9 Fig. 10 is a plan view illustrating a core sheet according to a third embodiment;

10 FIG. 15 is an enlarged perspective view illustrating the rotor core formed by sandwiching core laminations of FIG 9 has been formed, and is a perspective view with respect to a radially outer portion seen from a radially inner portion forth;

11 FIG. 10 is a plan view illustrating an embedded magnet motor according to a fourth embodiment; FIG.

12 is a plan view of the core sheet of 11 represents;

13 is an enlarged perspective view showing the rotor core of 11 and is a perspective view with respect to a radially inner portion seen from a radially outer portion forth;

14 Fig. 10 is a plan view illustrating an embedded magnetic motor according to a fifth embodiment;

15 is a plan view of the core sheet of 14 represents;

16 is an enlarged perspective view showing the rotor core of 14 and is a perspective view with respect to a radially inner portion seen from a radially outer portion forth;

17 Fig. 10 is a plan view illustrating a core sheet according to a sixth embodiment;

18 FIG. 10 is a plan view illustrating an embedded magnetic motor according to a seventh embodiment; FIG.

19 is a plan view of the core sheet of 18 represents;

20 is an enlarged perspective view showing the rotor core of 18 and is a perspective view with respect to a radially inner portion seen from a radially outer portion forth;

21 Fig. 10 is a plan view illustrating an embedded magnetic motor according to an eighth embodiment;

22 is a plan view of the core sheet of 21 represents;

23 is a perspective view showing the rotor core of 21 represents;

23A FIG. 15 is an enlarged perspective view illustrating a radially inner end of one of the radial receiving slots of FIG 23 represents;

24 Fig. 10 is a plan view illustrating an embedded magnetic motor according to a ninth embodiment;

25 is a plan view of the core sheet of 24 represents;

26 is a perspective view showing the rotor core of 24 represents;

26A FIG. 15 is an enlarged perspective view illustrating a radially inner end of one of the radial receiving slots of FIG 26 represents;

27 Fig. 10 is a plan view illustrating an embedded magnetic motor according to a tenth embodiment;

28 is a plan view of the core sheet of 27 represents;

29 is a perspective view showing the rotor core of 27 represents;

29A FIG. 15 is an enlarged perspective view illustrating a radially inner end of one of the radial receiving slots of FIG 29 represents;

30 Fig. 10 is a plan view illustrating an embedded magnetic motor according to an eleventh embodiment;

31 is a plan view of the core sheet of 30 represents;

32 is a perspective view showing the rotor core of 30 represents;

32A FIG. 15 is an enlarged perspective view illustrating a radially inner end of one of the radial receiving slots of FIG 32 represents;

33 is a plan view, a turned Bettetteten magnetic motor according to a twelfth embodiment represents;

34 is a plan view of the core sheet of 33 represents;

35 is a perspective view showing the rotor core of 33 represents;

35A FIG. 15 is an enlarged perspective view illustrating a radially inner end of one of the radial receiving slots of FIG 35 represents;

36 FIG. 10 is a plan view illustrating an embedded magnet motor according to a thirteenth embodiment; FIG.

37 is a plan view of the core sheet of 36 represents;

38 is a perspective view showing the rotor core of 36 represents;

38A FIG. 15 is an enlarged perspective view illustrating a radially inner end of one of the radial receiving slots of FIG 38 represents;

39 FIG. 10 is a plan view illustrating an embedded magnet motor according to a fourteenth embodiment; FIG.

40A is a partial side view showing the layered core sheets of 39 represents;

40B is an enlarged plan view of one of the slits of 29 represents;

40C FIG. 11 is an enlarged plan view illustrating a radially outer end of one of the V-shaped receiving slots of FIG 29 represents;

40D FIG. 10 is an enlarged plan view illustrating a radially inner end of one of the V-shaped receiving slots of FIG 29 represents;

41 FIG. 4 is a characteristic diagram of the relationship between the radial dimension of the wide slots and the rotor size; FIG.

42 Fig. 10 is a graph showing the rotor size ratio;

43 FIG. 10 is a cross-sectional view showing an embedded magnet motor according to a fifteenth embodiment; FIG.

44 is a plan view of the rotor and the stator of 43 shows, and the interior of the yoke shows;

45 is an enlarged plan view of one of the V-shaped receiving slots of 44 shows;

46 is an enlarged plan view showing a measuring step for selecting the position of the Hall IC, ie integrated Hall circuit, of 45 shows;

47 FIG. 12 is a characteristic diagram of the relationship between rotational angle and magnetic flux density showing characteristic curves Za to Ze corresponding to the Hall integrated circuits 51a to 51e from 46 correspond; and

48 FIG. 15 is a characteristic diagram of the relationship between rotational angle and magnetic flux density showing characteristic curves Zf to Zh corresponding to the Hall integrated circuits 51f to 51h from 46 correspond.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

The 1 to 3 show a first embodiment of the present invention.

1 shows an embedded magnetic motor according to the first embodiment. The embedded magnet motor includes a stator 1 and a rotor 2 , The embedded magnet motor is an inner rotor motor. The axis of the rotor 2 , that is, the central axis, is called the rotor axis 13 designated.

The stator 1 is formed so that it is substantially cylindrical overall. The stator 1 includes a stator core 5 and windings 6 , The stator core 5 includes a cylindrical section 3 and teeth 4 , The cylindrical section 3 forms the outer shape of the stator 1 , The teeth 4 , the number of which is twelve, extend from the inner peripheral surface of the cylindrical portion 3 to the rotor axis 13 , The teeth 4 are at equal angular intervals in the circumferential direction of the cylindrical portion 3 arranged. Every winding 6 is by means of an insulating body (not shown) by concentrated winding around one of the teeth 4 wound. 1 shows only one of the windings 6 with a double-dashed line.

The rotor 2 includes a rotary shaft 7 , a rotor core 8th , four radial magnets 9 , four first inclined magnets 71 and four second inclined magnets 72 , The rotor core 8th is at the rotary shaft 7 attached. The number of magnetic poles of the rotor 2 is expressed by P. In the first embodiment, the number of magnetic poles is set equal to eight. In the first embodiment, the diameter of the rotor 2 that is, the diameter of the rotor core 8th set to 30 mm provides. The radial magnets 9 , the first tilted magnets 71 and the second inclined magnets 72 are essentially cuboid and solid.

2 shows a core sheet 11 , The rotor core 8th is by layering several core sheets 11 formed in the axial direction is substantially cylindrical, as in 3 is shown. The core sheets 11 are arranged in layers, each one at 360 / (P / 2) ° in the circumferential direction around the motor axis 13 postponed. That is, in the first embodiment, the core sheets become 11 arranged in layers and each rotated individually by 90 °. Every core sheet 11 includes four mounting slots 18 , Fasteners which are rivets in the first embodiment 19 are through the mounting slots 18 plugged in to the core sheets 11 to fix. The rotary shaft 7 is in the central opening of the rotor core 8th fitted. The result is the rotor core 8th rotatable inside the stator 1 supported.

The rotor core 8th includes four radial receiving slots 8a , four first inclined receiving slots 81 and four second slanting receiving slots 82 , A pair consisting of a respective first inclined receiving slot 81 and the associated second inclined receiving slot 82 forms a V-shaped receiving slot 8b , If the rotor core 8th from the axial direction, the V-shaped receiving slots 8b essentially V-shaped from the rotor core 8th pointing radially outward. Each pair consisting of the first inclined receiving slot 81 and the second inclined receiving slot 82 approaches in a radially outward direction. That is, the rotor core 8th includes four V-shaped receiving slots 8b , The first slanted receiving slots 81 and the second inclined receiving slots 82 are straight lines, with respect to the radial direction of the rotor core 8th slanted in different directions. Each mounting slot 18 is in the middle of one of the V-shaped receiving slots 8b arranged. That is, each mounting slot 18 is between one of the first inclined receiving slots 81 and the associated second inclined receiving slot 82 arranged. Each first slanted receiving slot 81 and the associated second inclined receiving slot 82 are not related and independent of each other. In 1 is every first slanted receiving slot 81 counterclockwise from the adjacent radial receiving slot 8a arranged. Every second slanted receiving slot 82 is clockwise from the adjacent radial receiving slot 8a arranged.

The number of radial receiving slots 8a and the V-shaped receiving slots 8b is P / 2 in both cases. A pair consisting of a radial receiving slot 8a and the V-shaped receiving slot 8b is alternately at equal angular intervals in the circumferential direction of the rotor core 8th educated. In the present embodiment, the radial receiving slots are 8a arranged at intervals of 90 °, and the V-shaped receiving slots 8b are arranged at intervals of 90 °.

The radial receiving slots 8a and the V-shaped receiving slots 8b are receiving slots extending in the axial direction completely through the rotor core 8th extend. The radial receiving slots 8a extend in the radial direction of the rotor core 8th , Each of the radial receiving slots 8a takes one of the radial magnets 9 on. Each of the first inclined receiving slots 81 takes one of the first inclined magnets 71 on. Each of the second inclined receiving slots 82 takes one of the second inclined magnets 72 on. The radial magnets 9 and the associated first inclined magnet 71 , which adjoin one another, each form a north pole. The radial magnets 9 and the associated second inclined magnet 72 , which adjoin one another, each form a south pole. As a result, the rotor core has 8th four north poles and four south poles. The radial magnets 9 , the first tilted magnets 71 and the second inclined magnets 72 are magnetized after being in the radial receiving slots 8a and the V-shaped receiving slots 8b have been arranged to be plugged into the radial receiving slots 8a and the V-shaped receiving slots 8b to facilitate.

As in 1 is a wide portion, which in the first embodiment is a wide slot 8c is at the radially outer end of each radial receiving slot 8a educated. If the rotor core 8th from the axial direction, a direction perpendicular to the radial direction is referred to as a width direction. The width of the slits 8c is greater than the width of the radial magnets 9 , That is, the width of the slits 8c is larger than the width of another part of the radial receiving slots 8a as the slits 8c , The slits 8c extend completely through the rotor core in the axial direction 8th ,

As in 1 is shown, includes the rotor core 8th outer circumferential extensions 8d at the radially outer end of each radial receiving slot 8a are formed. A pair of outer circumferential union extensions 8d is the same amount in the circumferential direction of both perimeter sides of each radial receiving slot 8a to the interior of the radial receiving slot 8a in front. Each pair of outer circumferential extensions 8d does not touch each other. The outer circumferential processes 8d are arranged radially further inside than the wide slots 8c , That is, the portion between each radial receiving slot 8a and the corresponding slot 8c is through the outer circumferential extensions 8d narrows. The width between the pair of outer circumferential extensions 8d is smaller than the width of the radial receiving slots 8a and the width of the slits 8c , The outer circumferential processes 8d serve as outer extensions, which are the radial magnets 9 prevent it from moving radially outward. That is, the outer circumferential extensions 8d prevent a displacement of the radial magnets 9 ,

As in 3 are shown are the outer circumferential extensions 8d at some parts of each radial receiving slot 8a arranged along the axial direction. In the present embodiment, the number of core sheets is 11 between axially adjacent outer circumferential extensions 8d are arranged three.

As in 1 is shown, includes the rotor core 8th inner restriction sections 8e at the radially inner ends of the radial receiving slots 8a are formed. The inner restriction sections 8e are inner projections extending from the radially inner ends of the radial receiving slots 8a to the interior of the radial receiving slots 8a protrude radially outward. The width of the inner restriction sections 8e is the same as the width of the radial receiving slots 8a , The inner restriction sections 8e prevent the radial magnets 9 to move radially inwards.

As in 3 are shown, the inner restriction sections 8e at some parts of each radial receiving slot 8a arranged along the axial direction. In the present embodiment, the number of core sheets is 11 between axially adjacent inner restriction sections 8e are arranged three.

As in 1 are shown are V-slot outside spaces 8g in which the first inclined magnet 71 and the second inclined magnet 72 are not disposed at the radially outer ends of the first inclined receiving slot 81 and the second inclined receiving slot 82 intended. The width of the V-slot outside spaces 8g is substantially the same as the width of the first inclined magnets 71 and the second inclined magnets 72 , The rotor core 8th has V-slot extensions 8h at the radially outer ends of the first inclined receiving slots 81 and the second inclined receiving slots 82 are arranged. The V-slot extensions 8h are located radially further inboard than the V-slot outer spaces 8g , The V-slot extensions 8h are in the circumferential direction to the inside of the first inclined receiving slots 81 and the second inclined receiving slots 82 in front. That is, the portion between each first inclined magnet 71 and the associated V-slot outside space 8g is through one of the V-slot extensions 8h narrows. The section between every other inclined magnet 72 and the associated V-slot outside space 8g is through another V-slot extension 8h also narrowed. The V-slot extensions 8h prevent the first inclined magnets 71 and the second inclined magnets 72 by moving radially outward, that is, to the V-slot outer spaces 8g to move. A pair of V-slot extensions 8h is projected by the same amount along the circumferential direction in the opposite directions.

As in 1A is shown, is each radial receiving slot 8a through a pair of side surfaces 8p outlined a radial receiving slot extending in the radial direction substantially. The radially inner ends of the first inclined receiving slots 81 and the second inclined receiving slots 82 be sitting counter surfaces SX. The counter surfaces SX are the side surfaces 8p the radial receiving slots facing and extending substantially parallel to the side surfaces 8p the radial receiving slots. An inner bridge 8i is between each mating surface SX and the associated radial receiving slot 8a arranged. The width of the inner bridges 8i is constant in the radial direction. A triangular gap 8j is respectively at the radially inner end of the first inclined receiving slots 81 and second inclined receiving slots 82 intended. The triangular spaces 8j are substantially triangular elongated portions as viewed from the axial direction. As a result, the counter surfaces SX have arisen.

As in 1 shown has the rotor core 8th wide external bridges 8k whose number is expressed by P / 2, V-slot outer bridges 8w whose number is expressed by P, and intermediate oblique slot bridges 8m whose number is expressed by P / 2. The wide outer bridges 8k are bridge sections, each between one of the wide slots 8c and a rotor outer circumferential surface 8r are arranged. The rotor outer peripheral surface 8r is an outer peripheral surface of the rotor core 8th , The V-slot external bridges 8w are bridge sections located between the V-slot outside spaces 8g and the rotor outer circumferential surface 8r are arranged. The intermediate sloping slot bridges 8m are bridge portions, each between the radially outer end of one of the first inclined receiving slots 81 and the radially outer end of the associated second inclined receiving slot 82 arranged and attached to a pair of V-slot outer bridges 8w are connected.

As in 2 shown includes each of the core sheets 11 a short slit 11a and three long slots 11b , That is, with each of the core sheets 11 becomes the number of long slots 11b get by the number of short slits 11a is subtracted from P / 2. The short slit 11a and the long slots 11b form the radial receiving slots 8a if several core sheets 11 arranged in layers. That is, the short slit 11a and the long slots 11b For example, layered radial receiving slots are, in the first embodiment, preformed radial receiving slots. In other words, the core sheets have 11 the preformed radial receiving slots, the number of which is expressed by P / 2.

In addition, each of the core sheets possesses 11 four first preformed inclined receiving slots 61 and four second preformed inclined receiving slots 62 , The first slanted receiving slots 81 are by laminating the first preformed inclined receiving slots 61 educated. The second inclined receiving slots 82 are by sandwiching the second preformed inclined receiving slots 62 educated. A pair each consisting of a first preformed inclined receiving slot 61 and the associated second preformed inclined receiving slot 62 forms a preformed V-shaped receiving slot. That is, each of the core sheets 11 has the preformed V-shaped receiving slots whose number, which is four, is expressed by P / 2. The preformed V-shaped receiving slots are pre-formed by layering V-shaped receiving slots which, when layered, form the V-shaped receiving slots 8b form.

Each of the core sheets 11 is in an inner ring 11s and an outer ring 11t divided. The inner ring 11s is radially inside the short slot 11a , the long slots 11b , the first preformed inclined receiving slots 61 and the second preformed inclined receiving slots 62 arranged. The outer ring 11t is arranged radially outside of these. The inner bridges 8i and the intermediate sloping slot bridges 8m connect the inner ring 11s with the outer ring 11t , The inner ring 11s and the outer ring 11t take a big chunk of every core sheet 11 one.

The radially inner end of the short slot 11a forms the inner restriction section 8e , The long slots 11b The ra dial extends further inward than the short slot 11a , As in 3 is shown, the distance between the radially inner end of the short slot 11a and the rotor axis 13 referred to as the first radial distance R1. The distance between the radially inner end of each long slot 11b and the rotor axis 13 is referred to as the second radial distance R2. The distance between the radially inner end of each first inclined receiving slot 81 and the rotor axis 13 is referred to as the third radial distance R3. In the present embodiment, the third radial distance R3 is equal to the distance between the radially inner end of each of the second inclined receiving slots 82 and the rotor axis 13 ,

Of the first radial distance R1 is greater than the second radial distance R2 (R2 <R1). In the present embodiment, the first radial Distance R1 is greater than the third radial Distance R3 (R3 <R1). The second radial distance R2 is less than or equal to third radial distance R3 set (R2 ≤ R3). In the present embodiment, the second radial distance R2 is set substantially equal to the third radial distance R3.

In the first embodiment, the outer circumferential projections are 8d only in the short slot 11a every core sheet 11 intended.

As in 1A is shown, the dimension of the mating surfaces SX along the side surfaces 8p the radial receiving slots referred to as counter-surface dimension SW. The dimension of the short slot 11a corresponding portion of each mating surface SX is referred to as the overlap dimension R. The overlap dimension R is set to satisfy 0 <R ≦ SW / 2. In the present embodiment, the overlap dimension R is set equal to SW / 2. In the present embodiment, the mating surface dimension SW is equal to 2 mm, and the overlap dimension R is equal to 1 mm.

• (1) Wie in den 1 und 3 gezeigt ist, sind die Kurzschlitze 11a, das heißt, die inneren Einschränkungsabschnitte 8e, an einigen Teilen jedes radialen Aufnahmeschlitzes 8a entlang der axialen Richtung angeordnet. Die inneren Einschränkungsabschnitte 8e hindern die radialen Magnete 9 daran, sich radial nach innen zu bewegen. Abschnitte jedes radialen Aufnahmeschlitzes 8a, an denen die Langschlitze 11b vorgesehen sind, bilden Zwischenräume im Hinblick auf den dazugehörigen radialen Magneten 9. Auf diese Weise ist der Magnetwiderstand erhöht. Das heißt, die Langschlitze 11b trennen die Magnetpfade vom radialen Magneten 9. Im Ergebnis ist ein Magnetflussstreuverlust des eingebetteten Magnetmotors gesenkt. Somit wird der effektive Magnetfluss des eingebetteten Magnetmotors aufrechterhalten und das Drehmoment mühelos erhöht.

The first embodiment has the following advantages.

• (1) As in the 1 and 3 shown are the short slits 11a that is, the inner constraint sections 8e at some parts of each radial receiving slot 8a arranged along the axial direction. The inner restriction sections 8e prevent the radial magnets 9 to move radially inwards. Portions of each radial receiving slot 8a where the long slots 11b are provided, form spaces with respect to the associated radial magnet 9 , To this Way, the magnetoresistance is increased. That is, the long slots 11b separate the magnetic paths from the radial magnet 9 , As a result, a magnetic flux leakage of the embedded magnetic motor is lowered. Thus, the effective magnetic flux of the embedded magnetic motor is maintained and the torque is easily increased.

To the Examples are in the publication mentioned in the prior art the radially inner ends of the radial magnets without any gaps through the radially inner walls of the radial receiving slots enclosed. As a result, parts of the rotor core containing the forming radially inner ends of the radial receiving slots, magnetic paths with low magnetoresistance, which is a magnetic flux leakage could cause. The present invention solves such a problem.

• (2) Wie in 2 gezeigt ist, besitzt jedes Kernblech 11 nur einen Kurzschlitz 11a. Der Kurzschlitz 11a senkt den Magnetwiderstand des Kernblechs 11 unerwünscht. Die vorliegende Erfindung senkt den Magnetflussstreuverlust im Vergleich zu einem Fall, bei dem jedes Kernblech 11 mehrere Kurzschlitze 11a besitzt. Das heißt, der Magnetwiderstand des Rotorkerns 8 ist insgesamt maximiert.
• (3) Wie in 2 gezeigt ist, ist der zweite radiales Abstand R2 kleiner als der oder gleich dem dritten radialen Abstand R3 (R2 ≤ R3) angesetzt. Das heißt, der Abstand zwischen dem radial inneren Ende der Langschlitze 11b und der Rotorachse 13 ist kleiner als der oder gleich dem Abstand zwischen der Rotorachse 13 und dem radial inneren Ende der ersten schrägstehenden Aufnahmeschlitze 81 angesetzt. Deshalb werden die Innenbrücken 8i, die als Magnetpfade dienen, zumindest an dem durch die Langschlitze 11b gebildeten Abschnitt schmal. Auf diese Weise ist der Magnetflussstreuverlust zuverlässig gesenkt.
• (4) Wie in 2 gezeigt ist, ist der erste radiale Abstand R1 größer angesetzt als der dritte radiale Abstand R3 (R3 < R1). Das heißt, der Abstand zwischen dem radial inneren Ende des Kurzschlitzes 11a, das heißt, dem radial inneren Ende des radialen Magneten 9 und der Rotorachse 13 ist größer angesetzt als der Abstand zwischen der Rotorachse 13 und dem radial inneren Ende der ersten schrägstehenden Aufnahmeschlitze 81. Die folgenden Vorteile werden dadurch erzielt, dass die radialen Magnete 9 nach den ersten schrägstehenden Magneten 71 und den zweiten schrägstehenden Magneten 72 magnetisiert werden. Und zwar wird Magnetwerkstoff, der in den radialen Aufnahmeschlitzen 8a aufgenommen ist, problemlos und zuverlässig magnetisiert, während sie gleichzeitig davor bewahrt werden, durch die ersten schrägstehenden Magnete 71 und die zweiten schrägstehenden Magnete 72 beeinträchtigt zu werden. Auf diese Weise wird eine Ineffizienz der radialen Magnete 9 gesenkt. Dieser Vorteil wurde durch den folgenden Versuch bestätigt. Wenn nämlich der erste radiale Abstand R1 im Wesentlichen gleich dem dritten radialen Abstand R3 war, wurden die radial inneren Enden der radialen Magnete 9 schlecht magnetisiert, das heißt, es wurde eine Ineffizienz in den Magneten her vorgerufen, wenn die radialen Magnete 9 magnetisiert wurden, nachdem die ersten schrägstehenden Magnete 71 und die zweiten schrägstehenden Magnete 72 magnetisiert wurden. Um dieses Problem zu lösen, ist R3 kleiner angesetzt als R1 (R3 < R1).
• (5) Wie in 1A gezeigt ist, sind die Gegenflächen SX an den radial inneren Enden der ersten schrägstehenden Aufnahmeschlitze 81 und der zweiten schrägstehenden Aufnahmeschlitze 82 vorgesehen. Somit ist die Breite jeder Innenbrücke 8i entlang der radialen Richtung konstant. Deshalb ist die Breite der Innenbrücken 8i, oder der Magnetpfade, entlang der radialen Richtung gleichmäßig schmal ausgelegt, was den Magnetflussstreuverlust weiter senkt.
• (6) 4 zeigt das Versuchsergebnis für das Verhältnis zwischen dem Verhältnisanteil der Überlappungsabmessung R zur Gegenflächenabmessung SW und der Magnetisierungsrate der radial inneren Enden der radialen Magnete 9. Die Magnetisierungsrate nimmt in der Größenordnung R = 0, R = SW/4, R = SW/2, R = 3SW/4 und R = SW ab. Das heißt, die Magnetisierungsrate nimmt ab, wenn das Überlappungsverhältnis R/SW zunimmt. Wenn 0 < R ≤ SW/2 ist, ist die Magnetisierungsrate höher als in einem Fall, bei dem SW/2 < R ≤ SW ist. Somit ist in der ersten Ausführungsform, um 0 < R ≤ SW/2 zu erfüllen, R gleich SW/2 (R = SW/2) angesetzt. Deshalb wird eine geeignete Magnetisierungsrate erzielt und eine Ineffizienz der radialen Magnete 9 auf eine geeignete Weise gesenkt.
• (7) Die Kernbleche 11, wie sie in 2 gezeigt sind, werden schichtweise angeordnet und dabei jeweils einzeln um 360/(P/2)° in der Umfangsrichtung verschoben. In der vorliegenden Ausführungsform werden die Kernbleche 11 schichtweise angeordnet und dabei jeweils einzeln um 90° gedreht, um den Rotorkern 8 auszubilden. Auf diese Weise ist der Drehungs- und Schichtungsvorgang der Kernbleche 11 konstant, was die Herstellung erleichtert. Das heißt, der Schichtungsprozess der Kernbleche 11 lässt sich mühelos automatisieren.

The short slit 11a and the long slots 11b are by punching out each core sheet 11 educated. To the radial magnets 9 For example, to prevent it from moving radially inward may include projections such as the outer circumferential projections 8d at the radially inner ends of the radial receiving slots 8a be provided. However, the shortcut is 11a and the long slots 11b easy to manufacture according to the present invention.

• (2) As in 2 shown has each core sheet 11 just a shortcut 11a , The short slit 11a lowers the magnetoresistance of the core sheet 11 undesirable. The present invention lowers the magnetic flux leakage as compared with a case where each core sheet 11 several short slits 11a has. That is, the magnetic resistance of the rotor core 8th is maximized overall.
• (3) As in 2 is shown, the second radial distance R2 is set smaller than or equal to the third radial distance R3 (R2 ≦ R3). That is, the distance between the radially inner end of the elongated slots 11b and the rotor axis 13 is less than or equal to the distance between the rotor axis 13 and the radially inner end of the first inclined receiving slots 81 stated. That's why the inner bridges 8i , which serve as magnetic paths, at least at the through the long slots 11b narrow section formed. In this way, the magnetic flux leakage is reliably lowered.
• (4) As in 2 is shown, the first radial distance R1 is set greater than the third radial distance R3 (R3 <R1). That is, the distance between the radially inner end of the short slot 11a that is, the radially inner end of the radial magnet 9 and the rotor axis 13 is greater than the distance between the rotor axis 13 and the radially inner end of the first inclined receiving slots 81 , The following advantages are achieved by using the radial magnets 9 after the first inclined magnets 71 and the second inclined magnet 72 be magnetized. And that is magnetic material, in the radial receiving slots 8a is magnetized, easily and reliably magnetized while at the same time being prevented from being pushed by the first inclined magnets 71 and the second inclined magnets 72 to be affected. In this way, an inefficiency of the radial magnets 9 lowered. This advantage was confirmed by the following experiment. Namely, when the first radial distance R1 was substantially equal to the third radial distance R3, the radially inner ends of the radial magnets became 9 poorly magnetized, that is, there was an inefficiency in the magnet ago called when the radial magnets 9 were magnetized after the first tilted magnets 71 and the second inclined magnets 72 were magnetized. To solve this problem, R3 is smaller than R1 (R3 <R1).
• (5) As in 1A is shown, the counter surfaces SX at the radially inner ends of the first inclined receiving slots 81 and the second inclined receiving slots 82 intended. Thus, the width of each inner bridge 8i constant along the radial direction. That is why the width of the inner bridges 8i , or the magnetic paths, are made uniformly narrow along the radial direction, further lowering the magnetic flux leakage.
• (6) 4 FIG. 10 shows the result of the experiment for the relationship between the ratio of the overlap dimension R to the counter surface dimension SW and the magnetization rate of the radially inner ends of the radial magnets 9 , The magnetization rate decreases in the order of R = 0, R = SW / 4, R = SW / 2, R = 3SW / 4 and R = SW. That is, the magnetization rate decreases as the overlap ratio R / SW increases. When 0 <R ≦ SW / 2, the magnetization rate is higher than in a case where SW / 2 <R ≦ SW. Thus, in the first embodiment, to satisfy 0 <R ≦ SW / 2, R is set equal to SW / 2 (R = SW / 2). Therefore, an appropriate magnetization rate is achieved and inefficiency of the radial magnets 9 lowered in a suitable way.
• (7) The core sheets 11 as they are in 2 are shown are arranged in layers and thereby individually shifted by 360 / (P / 2) ° in the circumferential direction. In the present embodiment, the core sheets become 11 arranged in layers, each individually rotated by 90 ° to the rotor core 8th train. In this way is the rotation and stratification process of the core sheets 11 constant, which facilitates the production. That is, the laminating process of the core sheets 11 is easy to automate.

As in 3 shown are the short slits 11a that is, the inner constraint sections 8e by removing the core sheets 11 arranged in layers and thereby shifted by a certain angle, at regular intervals in each radial receiving slot 8a arranged along the axial direction. In the present embodiment, three core sheets are 11 between axially adjacent inner restriction sections 8e arranged. Therefore, the inner restriction sections 8e provided regularly along the axial direction. The inner restriction sections 8e hold the radial magnets 9 in a balanced way. And that is because the inner restriction sections 8e which are arranged at equal angular intervals along the axial direction, the radial magnets 9 evenly, to move inward in the axial direction at regular intervals.

The 5 to 8th show an embedded magnetic motor according to a second embodiment of the present invention.

As in 5 is shown, includes the rotor core 8th the second embodiment, instead of the outer circumferential extensions 8d , inward extensions 8n whose number is expressed by P / 2. The inward extensions 8n are from the radially outer ends of the radial receiving slots 8a radially inward. The width of the radial magnets 9 is referred to as the first width W1. The width of the slits 8c is referred to as the second width W2. The width of the inward extensions 8n is referred to as the third width W3.

In In this case W3 <W1 <W2 is fulfilled.

That is, the width of the inward extensions 8n is smaller than the width of the radial magnets 9 , Each inward extension 8n is in the circumferential direction in the middle of one of the wide slots 8c arranged. The inward Fortsät ze 8n prevent the radial magnets 9 to move radially outward.

As in 6 shown include the core sheets 11 the present embodiment, the inwardly directed extensions 8n only in the short slots 11a , The core sheets 11 from 6 layer by layer around the rotor axis 13 each time by 360 / (P / 2) °, that is, rotated by 90 °. The result is the rotor core 8th produced. The radial dimension of the radial magnets 9 from 5 may be greater than the radial dimension of the radial magnets 9 from 1 , And that's because the outer circumferential extensions 8d in 5 are not provided.

A dimension that is achieved by the radial dimension of a part of the inner bridge 8i facing radial magnets 9 from the radial dimension of the radial magnet 9 is deducted as the exposed dimension of the radial magnet 9 designated. That is, the exposed dimension of the radial magnet 9 represents the dimension of a part of magnetic flux input and magnetic flux output surfaces of the radial magnet 9 , the magnetic flux input and magnetic flux output surfaces of the first inclined magnet 71 and the second inclined magnet 72 are facing. The magnetic flux input and magnetic flux output surfaces of the radial magnet 9 are surfaces which are the side surfaces 8p touch the radial receiving slots. The magnetic flux input and magnetic flux output surfaces respectively of the first inclined magnet 71 are surfaces that extend along the first inclined magnet 71 extend. In case of 5 is the exposed dimension of the radial magnets 9 set to 4.75 mm. In case of 1 is the exposed dimension of the radial magnets 9 4.25 mm, when the radial dimension of the outer circumferential projections 8d is set to 0.5 mm. That is, the exposed dimension of the radial magnets 9 from 1 is smaller by the amount than the exposed dimension of the radial magnets 9 from 5 , which is the radial dimension of the outer circumferential projections 8d equivalent.

As a result, according to the result of experiments conducted using the same amount of current, the applied torque of the embedded magnetic motor of FIG 5 4% higher than the applied torque of the embedded magnetic motor of 1 , Also was the cogging torque of the embedded magnetic motor of 5 27% less than the cogging torque of the embedded magnetic motor of 1 , In addition, the torque ripple of the embedded magnetic motor was 5 7% less than the torque ripple of the embedded magnetic motor of 1 ,

• (8) Jeder der nach innen gerichteten Fortsätze 8n ist in der Umfangsrichtung in der Mitte eines der Breitschlitze 8c angeordnet. Die radiale Abmessung der nach innen gerichteten Fortsätze 8n ist gleich der radialen Abmessung der Breitschlitze 8c angesetzt. Somit stimmt die radiale Position des distalen Endes jedes nach innen gerichteten Fortsatzes 8n mit der radialen Position des radial inneren Endes des dazugehörigen Breitschlitzes 8c überein. Da zum Beispiel die äußeren umfänglichen Fortsätze 8d von 1 in die radialen Aufnahmeschlitze 8a vorstehen, hindern die äußeren umfängliche Fortsätze 8d die radialen Magnete 9 daran, sich nahe zu den Breitschlitzen 8c zu erstrecken. Da jedoch die nach innen gerichteten Fortsätze 8n von 5 nur in den Breitschlitzen 8c vorgesehen sind, dürfen sich die radialen Magnete 9 nahe zu den Breitschlitzen 8c erstrecken. Dadurch ist die Wirkung des eingebetteten Magnetmotors von 5 im Vergleich zum eingebetteten Magnetmotor von 1 mühelos verbessert.
• (9) Wie in 7 gezeigt ist, ist die Breite der nach innen gerichteten Fortsätze 8n der vorliegenden Ausführungsform auf ca. 1/3 der Breite der radialen Magnete 9 eingestellt. Das heißt, die

The second embodiment has the following advantages.

• (8) Each of the inward extensions 8n is in the circumferential direction in the middle of one of the wide slots 8c arranged. The radial dimension of the inward extensions 8n is equal to the radial dimension of the wide slots 8c stated. Thus, the radial position of the distal end of each inward extension is correct 8n with the radial position of the radial inner end of the corresponding slot 8c match. For example, the outer circumferential extensions 8d from 1 in the radial receiving slots 8a protrude, prevent the outer circumferential extensions 8d the radial magnets 9 at it, close to the slits 8c to extend. However, because the inward extensions 8n from 5 only in the slits 8c are provided, the radial magnets are allowed 9 near to the wide-slits 8c extend. This is the effect of the embedded magnetic motor of 5 compared to the embedded magnetic motor of 1 effortlessly improved.
• (9) As in 7 is shown, is the width of the inwardly directed extensions 8n of the present embodiment to about 1/3 of the width of the radial magnets 9 set. That is, the

Width of inward extensions 8n is less than or equal to ½ the width of the radial magnets 9 set. The pair of outer circumferential processes 8d from 1 for example, reduces the width of the associated radial receiving slot 8a , That is, the outer circumferential extensions 8d form a narrow section in the associated radial receiving slot 8a which can cause a magnetic flux leakage. That is because, though, the two outer circumferential extensions 8d are separated from each other, the outer circumferential extensions 8d from the side surfaces 8p the radial receiving slots extend and therefore the space between the side surfaces 8p reduce the radial receiving slots.

• (10) Die nach innen gerichteten Fortsätze 8n sind an einigen Teilen jedes radialen Aufnahmeschlitzes 8a entlang der axialen Richtung ausgebildet. Das heißt, die nach innen gerichteten Fortsätze 8n sind an einigen Teilen des Rotorkerns 8 entlang der axialen Richtung ausgebildet. Die Anzahl der zwischen axial angrenzenden nach innen gerichteten Fortsätzen 8n angeordneten Kernbleche 11 beträgt drei. Somit ist zum Beispiel im Vergleich zu einem Fall, bei dem sich die nach innen gerichteten Fortsätze 8n vollständig entlang der axialen Richtung erstrecken, der Magnetwiderstand aller radialer Aufnahmeschlitze 8a erhöht. Auf diese Weise ist der Magnetflussstreuverlust weiter gesenkt. Das heißt, die nach innen gerichteten Fortsätze 8n sind daran gehindert, den Magnetwiderstand unerwünscht zu senken.
• (11) Wie in 6 gezeigt ist, umfasst jedes der Kernbleche 11 den mit den nach innen gerichteten Fortsätzen 8n versehenen Kurzschlitz 11a und die Langschlitze 11b, die keine nach innen gerichteten Fortsätze 8n haben. Durch schichtweises Anordnen solcher Kernbleche 11, lässt sich der Rotorkern 8 mühelos so herstellen, dass die nach innen gerichteten Fortsätze 8n nur an einigen Teilen des Rotorkerns 8 entlang der axialen Richtung angeordnet sind.
• (12) Der nach innen gerichtete Fortsatz 8n ist nur im Kurzschlitz 11a jedes Kernblechs 11 angeordnet. Das heißt, sowohl der innere Einschränkungsabschnitt 8e als auch der nach innen gerichtete Fortsatz 8n sind im Kurzschlitz 11a jedes Kernblechs 11 vorgesehen. Somit sind die inneren Einschränkungsabschnitte 83 sowie auch die nach innen gerichteten Fortsätze 8n in jedem radialen Aufnahmeschlitz 8a an denselben axialen Positionen angeordnet. Auf diese Weise ist jeder radiale Magnet 9 daran gehindert, sich an derselben axialen Position radial nach außen und radial nach innen zu bewegen. Auf diese Weise sind die radialen Magnete 9 auf eine ausgeglichene Weise gehaltert.

However, the width of the inward extensions is 8n from 5 adjusted so that the inward extensions 8n from the side surfaces 8p the radial receiving slots are separated, and is set smaller than the width of the radial magnets 9 , Thus, the inward extensions form 8n from 5 not easily a magnetic path for a magnetic flux leakage and easily reduce the magnetic flux leakage. In this way, the embedded magnetic motor increases from 5 compared to the embedded magnetic motor of 1 effortlessly the effectiveness.

• (10) The inward extensions 8n are at some parts of each radial receiving slot 8a formed along the axial direction. That is, the inward extensions 8n are at some parts of the rotor core 8th formed along the axial direction. The number of axially adjacent inward projections 8n arranged core sheets 11 is three. Thus, for example, as compared to a case where the inwardly directed extensions 8n extend completely along the axial direction, the magnetoresistance of all radial receiving slots 8a elevated. In this way, the magnetic flux leakage is further lowered. That is, the inward extensions 8n are prevented from undesirably lowering the magnetoresistance.
• (11) As in 6 shown includes each of the core sheets 11 the one with the inward extensions 8n provided short-slotted 11a and the long slots 11b that have no inward extensions 8n to have. By layering such core sheets 11 , lets the rotor core 8th effortlessly craft that inward extensions 8n only on some parts of the rotor core 8th are arranged along the axial direction.
• (12) The inward extension 8n is only in the short slot 11a every core sheet 11 arranged. That is, both the inner restriction section 8e as well as the inward extension 8n are in the short slit 11a every core sheet 11 intended. Thus, the inner restriction portions 83 as well as the inward extensions 8n in each radial receiving slot 8a arranged at the same axial positions. In this way, every radial magnet 9 prevented from moving radially outward and radially inward at the same axial position. In this way are the radial magnets 9 held in a balanced way.

The 9 and 10 show a third embodiment.

The rotor core 8th from 10 can by layering the core sheets 12 from 9 and the core sheets 11 from 6 be formed. That is, the embodiment is not limited to layering only one kind of core sheets 11 limited. The core sheet 12 from 9 does not have a short slot 11a , and the preformed radial receiving slots, the number of which is expressed by P / 2, are all long slots 11b , The inward extensions 8n are at some parts of each radial receiving slot 8a arranged along the axial direction. The number of core sheets 11 between axially adjacent inward extensions 8n are arranged, is seven. The core sheets 11 from 6 are arranged in layers and each rotated by 90 ° ge. The number and amount of inner constraint sections 8e and the inward extensions 8n along the axial direction of the rotor core 8th from 10 are provided are smaller than those of the rotor core 8th from 1 or 5 , In this way, the rotor core lowers 8th from 10 the magnetic resistance continues, and also reduces the magnetic flux leakage.

The 11 to 13 show a fourth Embodiment of the present invention.

As in 13 Shown are the slits 8c and the pairs of outer circumferential processes 8d at the radially outer end of each radial receiving slot 8a arranged. The number of core sheets 11 between axially adjacent outer circumferential extensions 8d are arranged is three.

As in 12 is shown, includes the rotor core 8th in each radial receiving slot 8a inner circumferential extensions 8u , The inner peripheral processes 8u are from the radially inner end of each radial receiving slot 8a a little bit separated. In the present embodiment, the amount of protrusion of each inner circumferential extension is 8u from the side surface 8p the associated radial receiving slot set greater than half the width of the radial receiving slot 8a , As a result, the inner circumferential projections hinder 8u the radial magnets 9 to move radially inwards.

The inner peripheral processes 8u are only on one of the two side surfaces 8p the radial receiving slots provided. In case of 11 stand the inner circumferential extensions 8u which are in the radial receiving slots 8a should be arranged, in the circumferential direction only from the side surfaces 8p the radial receiving slots 8a in the counterclockwise direction. The inner peripheral processes 8u are at some parts of the radial receiving slots 8a arranged along the axial direction. As in 13 is shown, the number of core sheets 11 between axially adjacent inner circumferential extensions 8u are provided, three.

As in 12 shown has each core sheet 11 the long slots 11b whose number is expressed by P / 2, namely 4 , The radial dimension of the long slots 11b is greater than the radial dimension of the radial magnets 9 , In the present embodiment, each core sheet has 11 the inner circumferential extension 8u and the pair of outer circumferential processes 8d only in one of the long slots 11b , That is, in the present embodiment, the inner peripheral extension 8u and the outer circumferential extensions 8d in three of the long slots 11b every core sheet 11 not trained. The distance between the rotor axis 13 and the inner circumferential extension 8u is referred to as the first radial distance R1.

• (13) Wie in 13 gezeigt ist, sind die inneren umfänglichen Fortsätze 8u an einigen Teilen jedes radialen Aufnahmeschlitzes 8a entlang der axialen Richtung angeordnet. Die inneren umfänglichen Fortsätze 8u hindern die radialen Magnete 9 daran, sich radial nach innen zu bewegen. Die radiale Abmessung der radialen Aufnahmeschlitze 8a ist größer als die radiale Abmessung der radialen Magnete 9. Da die inneren umfänglichen Fortsätze 8u vorgesehen sind, sind die radial inneren Enden der radialen Aufnahmeschlitze 8a von den radialen Magneten 9 getrennt. Das heißt, der Magnetpfad ist getrennt von den radialen Magneten 9. Somit ist der Magnetwiderstand an den radial inneren Enden der radialen Aufnahmeschlitze 8a erhöht und der Magnetflussstreuverlust damit gesenkt.

The fourth embodiment has the following advantages.

• (13) As in 13 are shown are the inner circumferential extensions 8u at some parts of each radial receiving slot 8a arranged along the axial direction. The inner peripheral processes 8u prevent the radial magnets 9 to move radially inwards. The radial dimension of the radial receiving slots 8a is greater than the radial dimension of the radial magnets 9 , Because the inner circumferential extensions 8u are provided, the radially inner ends of the radial receiving slots 8a from the radial magnets 9 separated. That is, the magnetic path is separated from the radial magnets 9 , Thus, the magnetoresistance is at the radially inner ends of the radial receiving slots 8a increases and the magnetic flux leakage thereby lowered.

• (14) Wie in 12 gezeigt ist, umfasst jedes Kernblech 11 nur einen inneren umfänglichen Fortsatz 8u. Somit ist zum Beispiel im Vergleich zu einem Fall, bei dem jedes Kernblech 11 mehrere innere umfängliche Fortsätze 8u umfasst, der Magnetwiderstand des gesamten Rotorkerns 8 erhöht und der Magnetflussstreuverlust gesenkt.
• (15) Der zweite radiale Abstand R2 ist kleiner als der oder gleich dem dritten radialen Abstand R3 angesetzt. In der vorliegenden Ausführungsform ist der zweite radiale Abstand R2 ein wenig kleiner angesetzt als der dritte radiale Abstand R3. Somit sind die Magnetpfade, bei denen es sich um die Innenbrücken 8i in der vierten Ausführungsform handelt, verschmälert und der Magnetflussstreuverlust gesenkt.
• (16) Der erste radiale Abstand R1 ist größer angesetzt als der dritte radiale Abstand R3 (R3 < R1). Wenn die radialen Magnete 9 nach den ersten schrägstehenden Magneten 71 und den zweiten schrägstehenden Magneten 72 magnetisiert werden, werden deshalb die radialen Magnete 9 nicht ohne Weiteres durch die ersten schrägstehenden Magnete 71 und die zweiten schrägstehenden Magnete 72 beeinträchtigt, und werden problemlos und zuverlässig magnetisiert. Auf diese Weise wird die Ineffizienz der radialen Magnete 9 reduziert.
• (17) Die in 12 gezeigten Kernbleche 11 werden schichtweise angeordnet und dabei jeweils einzeln um 360/(P/2)°, das heißt, um 90° in der Umfangsrichtung verschoben. Deshalb ist der Drehungs- und Schichtungsvorgang der Kernbleche 11 konstant, was eine Automatisierung erleichtert. Da die inneren Einschränkungsabschnitte 8e in regelmäßigen Abständen in der axialen Richtung vorgesehen sind, sind die radialen Magnete 9 auch auf eine ausgeglichene Weise gehaltert.

As in the 11 and 13 are shown are the inner circumferential extensions 8u only on one of the two side surfaces 8p arranged the radial receiving slots. Thus, for example, as compared to a case where the inner circumferential projections 8u on both of the pair of side surfaces 8p the radial receiving slots are arranged, a punching of the core sheets 11 of the 11 to 13 simple, which makes the production easier.

• (14) As in 12 shown includes each core sheet 11 only an inner circumferential extension 8u , Thus, for example, as compared with a case where each core sheet 11 several inner circumferential extensions 8u includes, the magnetoresistance of the entire rotor core 8th increased and the magnetic flux leakage decreased.
• (15) The second radial distance R2 is set smaller than or equal to the third radial distance R3. In the present embodiment, the second radial distance R2 is set a little smaller than the third radial distance R3. Thus, the magnetic paths, which are the inner bridges 8i in the fourth embodiment, it is narrowed and the magnetic flux leakage is lowered.
• (16) The first radial distance R1 is set larger than the third radial distance R3 (R3 <R1). If the radial magnets 9 after the first inclined magnets 71 and the second inclined magnet 72 Therefore, the radial magnets become magnetized 9 not easily by the first inclined magnets 71 and the second inclined magnets 72 impaired, and magnetized easily and reliably. In this way, the inefficiency of the radial magnets 9 reduced.
• (17) The in 12 shown core sheets 11 are arranged in layers and in each case individually by 360 / (P / 2) °, that is, shifted by 90 ° in the circumferential direction. Therefore, the turning and laminating process of the core sheets 11 constant, which facilitates automation. Since the inner restriction section th 8e are provided at regular intervals in the axial direction, are the radial magnets 9 also held in a balanced way.

The 14 to 16 show a fifth embodiment of the present invention.

14 shows a rotor core 21 according to the fourth embodiment. As in the 14 and 16 are shown are inner radial extensions 22b on both sides 8p the radial receiving slots 21a intended.

As in 15 shown includes each core sheet 22 the long slots 11b whose number is expressed by P / 2. All long slots 11b are with one of the inner radial extensions 22b Mistake. The inner radial extension 22b is only on one of the peripheral sides of each long slot 11b intended. In 15 is the inner radial extension 22b arranged only on the counterclockwise side surface. The two outer circumferential extensions 8d are in all long slots 11b educated.

The core sheets 22 from 15 are arranged in layers, with each core sheet 22 to the previous core sheet 22 is turned around to the rotor core 21 from 14 to build. As in 16 are shown are the inner radial extensions 22b arranged along the axial direction in a staggered pattern.

• (18) Die inneren radialen Fortsätze 22b stehen pro Kernblech 11 von den abwechselnden Seitenflächen 8p der radialen Aufnahmeschlitze vor. Somit haltern die inneren radialen Fortsätze 22b von 16 die radialen Magnete 9 im Vergleich zu den inneren umfänglichen Fortsätzen 8u von 13 auf eine ausgeglichenere Weise.
• (19) Auf den beiden Seitenflächen 8p der radialen Aufnahmeschlitze ist jeweils dieselbe Anzahl von inneren radialen Fortsätzen 22b angeordnet. Somit ist das Gleichgewicht des Rotorkerns 21 wie etwa das Drehgleichgewicht zufriedenstellend. Dies reduziert Schwingung, die durch eine Unwucht des Rotorkerns 21 verursacht wird.
• (20) Der Betrag des Vorsprungs der inneren radialen Fortsätze 22b ist kleiner angesetzt als die halbe Breite der radialen Aufnahmeschlitze 21a. Auf diese Weise sind die inneren radialen Fortsätze 22b daran gehindert, einander zu berühren. Das heißt, es wird verhindert, dass der Magnetwiderstand des Rotorkerns 21 gesenkt wird. Mit anderen Worten wird verhindert, dass der Magnetpfad verkürzt wird.

The fifth embodiment has the following advantages.

• (18) The inner radial extensions 22b stand per core sheet 11 from the alternate side surfaces 8p the radial receiving slots. Thus, the inner radial extensions support 22b from 16 the radial magnets 9 in comparison to the inner circumferential extensions 8u from 13 in a more balanced way.
• (19) On the two side surfaces 8p The radial receiving slots are each the same number of inner radial extensions 22b arranged. Thus, the balance of the rotor core 21 such as the rotational balance satisfactorily. This reduces vibration caused by an imbalance of the rotor core 21 is caused.
• (20) The amount of protrusion of the inner radial extensions 22b is set smaller than half the width of the radial receiving slots 21a , In this way, the inner radial extensions 22b prevented from touching each other. That is, it prevents the magnetic resistance of the rotor core 21 is lowered. In other words, the magnetic path is prevented from being shortened.

17 shows a core sheet 31 according to a sixth embodiment.

The core sheet 31 includes inner radial extensions 31a whose number is p / 2. Each inner radial extension 31a is from one of the broadside corners of the radially inner end of one of the long slots 11b bulged radially outward. That is, the inner radial extensions 31a are from the radially inner ends of the radial receiving slots 8a not separated. The width of the long slots 11b is reduced to the radially inner end. In every core sheet 31 are the inner radial extensions 31a in all four long slots 11b arranged. The core sheet is formed by forming several core sheets 31 be arranged in layers without turning them. The rigidity of the inner radial extensions 31a from 17 is higher than the rigidity of the inner circumferential extensions 8u from 13 and the rigidity of the inner radial extensions 22b from 16 , In this way, the inner radial extensions 31a from 17 not easily deformed, and the radial magnets 9 are strongly prevented from moving radially inward. To increase the length of the magnetic path, the in the 13 and 16 illustrated embodiments before the embodiment of 16 prefers.

The 18 to 20 show a seventh embodiment of the present invention.

The slits 8c extend in the axial direction entirely through the rotor core 8th , The two outer circumferential extensions 8d are between each slot 8c and the radially outer end of the associated radial receiving slot 8a arranged. The outer circumferential processes 8d are over the entire axial direction of the rotor core 8th intended. The protrusion amounts of the outer circumferential extensions 8d are the same.

As in 20 shown are the inner bridges 8i of the present embodiment, at some parts along the axial direction. The number of core sheets 11 between axially adjacent inner bridges 8i are three.

As in 19 shown includes each of the core sheets 11 an independent slot 11c and three two-sided connection slots 11d , At the independent slot 11c and at the two-sided connection slots 11d These are the preformed radial receiving slots, the number of which is four, ie P / 2. The radially inner end of each two-sided communication slot 11d stands with the circumferentially adjacent first preformed inclined receiving slot 61 and the two preformed inclined receiving slot 62 in connection. The independent slot 11c does not fit with the first preformed slanted receiving slot 61 still with the second preformed inclined receiving slot 62 in connection. And that is the inner bridge 8i between the independent slot 11c and the first preformed inclined receiving slot 61 intended. The inner bridge 8i is also between the independent slot 11c and the second preformed inclined receiving slot 62 intended.

• (21) Der unabhängige Schlitz 11c ist an einigen Teilen jedes radialen Aufnahmeschlitzes 8a entlang der axialen Richtung angeordnet. Im Ergebnis hindern die Innenbrücken 8i die ersten schrägstehenden Magnete 71 und die zweiten schrägstehenden Magnete 72 daran, sich radial nach innen zu bewegen. Im Ergebnis sind die ersten schrägstehenden Magnete 71 und die zweiten schrägstehenden Magnete 72 daran gehindert, sich an einigen Teilen des Rotorkerns 8 entlang der axialen Richtung radial nach innen zu bewegen. Das heißt, es sind Zwischenräume zwischen einigen Teilen jedes radialen Aufnahmeschlitzes 8a, die den beidseitigen Verbindungsschlitzen 11d entsprechen, und dem inneren Ende des dazugehörigen ersten schrägstehenden Magneten 71 vorgesehen, da die Innenbrücken 8i nicht vorgesehen sind. Zwischenräume sind auch zwischen einigen Teilen jedes radialen Aufnahmeschlitzes 8a, die den beidseitigen Verbindungsschlitzen 11d entsprechen, und dem radial inneren Ende des dazugehörigen zweiten schrägstehenden Magneten 72 vorgesehen. Auf diese Weise ist der Magnetwiderstand an den radial inneren Enden der ersten schrägstehenden Magnete 71 und der zweiten schrägstehenden Magnete 72 erhöht und der Magnetflussstreuverlust ist gesenkt.

The seventh embodiment has the following advantages.

• (21) The independent slot 11c is at some parts of each radial receiving slot 8a arranged along the axial direction. As a result, the inner bridges hinder 8i the first tilted magnets 71 and the second inclined magnets 72 to move radially inwards. As a result, the first slanting magnets 71 and the second inclined magnets 72 prevented from getting to some parts of the rotor core 8th to move radially inward along the axial direction. That is, there are gaps between some parts of each radial receiving slot 8a , the two-sided connection slots 11d correspond, and the inner end of the associated first inclined magnet 71 provided, as the inner bridges 8i are not provided. Gaps are also between some parts of each radial receiving slot 8a , the two-sided connection slots 11d correspond, and the radially inner end of the associated second inclined magnet 72 intended. In this way, the magnetoresistance is at the radially inner ends of the first inclined magnets 71 and the second inclined magnets 72 increased and the magnetic flux leakage is lowered.

• (22) Beim unabhängigen Schlitz 11c, der an jedem Kernblech 11 ausgebildet wird, handelt es sich um einen an der Zahl. Der unabhängige Schlitz 11c senkt im Vergleich zu den beidseitigen Verbindungsschlitzen 11d unerwünschter Weise den Magnetwiderstand des Rotorkerns 8. Da jedoch in der vorliegenden Ausführungsform jedes Kernblech 11 mit einem unabhängigen Schlitz 11c versehen ist, ist der Magnetwiderstand des gesamten Rotorkerns 8 erhöht und der Magnetflussstreuverlust auf ein Mindestmaß gesenkt.
• (23) Die Kernbleche 11 werden entlang der Rotorachse 13 schichtweise angeordnet und dabei jeweils einzeln um 360/(P/2)°, das heißt, um 90° gedreht. Da der Drehungs- und Schichtungsvorgang der Kernbleche 11 konstant ist, lässt sich der Rotorkern 8 mühelos herstellen und eine Automatisierung ist einfach. Der unabhängige Schlitz 11c und die Innenbrücken 8i sind in regelmäßigen Abständen entlang der Rotorachse 13 vorgesehen. In der vorliegenden Ausführungsform sind drei Kernbleche 11 zwischen axial angrenzenden unabhängigen Schlitzen 11c angeordnet. Somit schränken die Innenbrücken 8i die radial nach innen gerichtete Bewegung der ersten schrägstehenden Magnete 71 und der zweiten schrägstehenden Magnete 72 gleichmäßig entlang der axialen Richtung ein. Auf diese Weise sind die ersten schrägstehenden Magnete 71 und die zweiten schrägstehenden Magnete 72 auf eine ausgeglichene Weise gehaltert.
• (24) Die Breite der Innenbrücken 8i ist aus der axialen Richtung gesehen entlang der radialen Richtung konstant. Auf diese Weise ist die Breite der Innenbrücken 8i gleichmäßig verkleinert, wodurch der Magnetflussstreuverlust gesenkt ist.
• (25) Die ersten schrägstehenden Aufnahmeschlitze 81 und der dazugehörige zweite schrägstehende Aufnahmeschlitze 82 stehen jeweils nicht in Verbindung miteinander. Das heißt, die Zwischenschrägschlitzbrücken 8m, die sich in der radialen Richtung erstrecken, sind zwischen jedem ersten schrägstehenden Aufnahmeschlitz 81 und dem dazugehörigen zweiten schrägstehenden Aufnahmeschlitz 82 ausgebildet. Die breiten Außenbrücken 8k sind mit den Zwischenschrägschlitzbrücken 8m verbunden. Somit ist im Rotorkern 8 der vorliegenden Ausführungsform im Vergleich zu einem Fall, bei den zum Beispiel jeder erste schrägstehende Aufnahmeschlitz 81 mit den dazugehörigen zweiten schrägstehenden Aufnahmeschlitzen 82 in Verbindung steht, die Festigkeit erhöht und eine Verformung ist verhindert.

The two-sided connection slots 11d and the independent slot 11c can be effortlessly punched out of each core sheet 11 produce. The punching out of the two-sided connection slots 11d and the independent slot 11c is simpler than, for example, extensions such as the inner constraint sections 8e from 1 train. The inner bridges 8i connect the inner ring 11s every core sheet 11 in the radial direction with the outer ring 11t , Thus, the inner bridges have 8i although they are thin, in the direction of restricting the movement of the first oblique magnets 71 and the second inclined magnets 72 in comparison with, for example, the inner restriction sections 8e from 1 a high strength. The length of the first inclined magnets 71 and the second inclined magnets 72 can be increased by the amount of which the thickness of the inner bridges 8i corresponds, which can be reduced.

• (22) At the independent slot 11c that is on every core sheet 11 is trained, it is one in number. The independent slot 11c lowers compared to the two-sided connection slots 11d undesirably the magnetic resistance of the rotor core 8th , However, in the present embodiment, since each core sheet 11 with an independent slot 11c is the magnetoresistance of the entire rotor core 8th increased and the magnetic flux leakage is minimized.
• (23) The core sheets 11 be along the rotor axis 13 arranged in layers and each individually by 360 / (P / 2) °, that is, rotated by 90 °. Because the turning and laminating process of the core sheets 11 is constant, the rotor core can be 8th effortlessly and automation is easy. The independent slot 11c and the inner bridges 8i are at regular intervals along the rotor axis 13 intended. In the present embodiment, three core sheets are 11 between axially adjacent independent slots 11c arranged. Thus, the inner bridges limit 8i the radially inwardly directed movement of the first inclined magnets 71 and the second inclined magnets 72 evenly along the axial direction. In this way, the first inclined magnets 71 and the second inclined magnets 72 held in a balanced way.
• (24) The width of the inner bridges 8i is constant along the radial direction when viewed from the axial direction. In this way, the width of the inner bridges 8i evenly reduced, whereby the magnetic flux leakage is lowered.
• (25) The first inclined receiving slots 81 and the associated second inclined receiving slots 82 are not in communication with each other. That is, the intermediate sloping slot bridges 8m that extend in the radial direction are between each first inclined receiving slot 81 and the associated second inclined receiving slot 82 educated. The wide outer bridges 8k are with the intermediate sloping slot bridges 8m connected. Thus, in the rotor core 8th of the present embodiment, as compared with a case where, for example, each first inclined receiving slot 81 with the associated second inclined receiving slots 82 communicates, the strength increases and deformation is prevented.

In particular, each of the core sheets could 11 be difficult to handle before layering, because the stiffness of the core sheet 11 is reduced. For example, the stiffness of the core sheet 11 reduced in a case where each a first preformed inclined receiving slot 61 with the associated second preformed inclined receiving slot 62 communicates. And that's because of the inner ring 11s of the core sheet 11 only through the inner bridges 8i with the outer ring 11t connected is. However, in the present embodiment, there are intermediate oblique slot bridges 8m the inner ring 11s with the outer ring 11t connect, is the strength of the core sheet 11 increases and deformation of the core sheet 11 is prevented, which facilitates handling.

The 21 to 23A show an eighth embodiment of the present invention.

This in 22 shown core sheet 11 includes two first unilateral connection slots 11e and two independent slots 11c , In these first one-sided connection slots 11e and the independent slots 11c These are the preformed radial receiving slots, the number of which is four, that is, P / 2. Each of the first one-sided connection slots 11e stands with the associated first preformed inclined receiving slot 61 but communicates with the second preformed inclined receiving slot 62 not in contact. And that is the inner bridge 8i between each first unilateral connection slot 11e and the associated second preformed inclined receiving slot 62 educated. In 21 are the first one-sided connection slots 11e arranged at intervals of 180 °. That is, the independent slots 11c are also arranged at intervals of 180 °.

The in the 21 and 23 shown rotor core 8th is made by the core sheets 11 from 22 layer by layer on the rotor axis 13 arranged and rotated individually by 90 °.

• (26) Die ersten einseitigen Verbindungsschlitze 11e sind zumindest an einigen Teilen jedes radialen Aufnahmeschlitzes 8a entlang der axialen Richtung angeordnet. Somit sind Zwischenräume zwischen Teilen jedes radialen Aufnahmeschlitzes 8s, die den ersten einseitigen Verbindungsschlitzen 11e entsprechen, und dem radial inneren Ende des dazugehörigen ersten schrägstehenden Magneten 71 gebildet. Somit ist der Magnetwiderstand erhöht und der Magnetflussstreuverlust gesenkt. Die ersten einseitigen Verbindungsschlitze 11e durch Ausstanzen des Kernblechs 11 herzustellen ist einfacher als zum Beispiel die inneren Einschränkungsabschnitte 8e von 1 herzustellen. Da die Innenbrücken 8i den Innenring 11s in der radialen Richtung mit dem Außenring 11t verbinden, ist auch die Festigkeit jedes Kernblechs 11 erhöht. Indem die Dicke der Innenbrücken 8i reduziert wird, wird die Länge der ersten schrägstehenden Magnete 71 und der zweiten schrägstehenden Magnete 72 erhöht.

The eighth embodiment has the following advantage.

• (26) The first one-sided connection slots 11e are at least at some parts of each radial receiving slot 8a arranged along the axial direction. Thus, there are gaps between parts of each radial receiving slot 8s that the first one-sided connection slots 11e correspond, and the radially inner end of the associated first inclined magnet 71 educated. Thus, the magnetoresistance is increased and the magnetic flux leakage is lowered. The first one-sided connection slots 11e by punching out the core sheet 11 making it easier than, for example, the inner constraint sections 8e from 1 manufacture. Because the inner bridges 8i the inner ring 11s in the radial direction with the outer ring 11t The strength of every core sheet is also 11 elevated. By the thickness of the inner bridges 8i is reduced, the length of the first inclined magnets 71 and the second inclined magnets 72 elevated.

The embodiment is not limited to the core sheets 11 from 22 layer by layer on the rotor axis 13 to arrange and the core sheets 11 each turn individually, but the core sheets 11 from 22 can also be arranged in layers, while the core sheets 11 each rotated individually by 90 °, and wherein each core sheet 11 in relation to the previous core sheet 11 is turned around. In this case, the cross-sectional areas of the inner bridges 8i on both circumferential sides of the radial receiving slots 8a along the entire axial direction of the rotor core 8th equal.

The 24 to 26A show a ninth embodiment.

As in 25 shown includes each core sheet 11 two first unilateral connection slots 11e and two second single-sided connection slots 11f , That is, a total of four preformed radial receiving slots of the core sheet 11 are all one-sided connection slots. The second one-sided connection slots 11f stand with the first preformed inclined receiving slots 61 do not connect, and stand with the second preformed slanted receiving slots 62 in connection.

The rotor core 8th of the 24 and 26 is made by making the core sheets 11 from 25 on the rotor axis 13 arranged in layers and rotated individually by 90 °.

• (27) Jeder der radialen Aufnahmeschlitze 8a ist mit den ersten einseitigen Verbindungsschlitzen 11e und den zweiten einseitigen Verbindungsschlitzen 11 versehen. Im Ergebnis hindern die Innenbrücken 8i die ersten schrägstehenden Magnete 71 und die zweiten schrägstehenden Magnete 72 daran, sich radial nach innen zu bewegen.
• (28) Bei allen vorgeformten radialen Aufnahmeschlitzen handelt es sich entweder um den ersten einseitigen Verbindungsschlitz 11e oder den zweiten einseitigen Verbindungsschlitz 11f. Somit ist zum Beispiel im Vergleich zu einem Fall, bei dem es sich bei einigen der vorgeformten radialen Aufnahmeschlitze um die unabhängigen Schlitze 11c handelt, der Magnetwiderstand des Rotorkerns 8 erhöht, wodurch der Magnetflussstreuverlust gesenkt ist.

The ninth embodiment has the following advantages.

• (27) Each of the radial receiving slots 8a is with the first one-sided connection slots 11e and the second one-sided connection slots 11 Mistake. As a result, the inner bridges hinder 8i the first tilted magnets 71 and the second inclined magnets 72 to move radially inwards.
• (28) All pre-formed radial receiving slots are either the first single-sided connection slot 11e or the second single-sided communication slot 11f , Thus, for example, as compared with a case where some of the preformed radial receiving slots are the independent slots 11c is the magnetic resistance of the rotor core 8th increases, whereby the magnetic flux leakage is lowered.

The radial dimension of each of the two-sided connection slots 11d , the independent slot 11c , the first one-sided connection slots 11e and the second one-sided connection slots 11f does not need to be consistent. Some of the preformed radial receiving slots may be the short slots 11a act, the rest may be the long slots 11b act. The short slits 11a prevent the radial magnets 9 to move radially inwards.

The 27 to 29A show a tenth embodiment.

This in 28 shown core sheet 11 includes a short independent slot 11g , The short independent slot 11g is equal to the independent slot 11c from 19 , wherein the radial dimension is reduced. The radial dimension of the short independent slot 11g is smaller than the long slots, which are the two-sided communication slots 11 is.

The core sheets 11 from 28 be along the rotor axis 13 arranged in layers and each rotated individually by 90 °. As a result, the in the 27 and 29 shown rotor core 8th produced.

• (29) Kurzschlitze, das heißt, die kurzen unabhängigen Schlitze 11g, sind an einigen Teilen jedes radialen Aufnahmeschlitzes 8a entlang der axialen Richtung angeordnet. Die kurzen unabhängigen Schlitze 11g bilden die inneren Einschränkungsabschnitte 8e. Die inneren Einschränkungsabschnitte 8e hindern die radialen Magnete 9 daran, sich radial nach innen zu bewegen. Zwischenräume sind zwischen den radialen Magneten 9 und einigen Teilen jedes radialen Aufnahmeschlitzes 8a vorgesehen, die den Langschlitzen, das heißt, den beidseitigen Verbindungsschlitzen 11d entsprechen. Somit ist der Magnetwiderstand des Rotorkerns 8 erhöht, wodurch der Magnetflussstreuverlust gesenkt ist.

The tenth embodiment has the following advantage.

• (29) Short slits, that is, the short independent slits 11g , are at some parts of each radial receiving slot 8a arranged along the axial direction. The short independent slots 11g form the inner restriction sections 8e , The inner restriction sections 8e prevent the radial magnets 9 to move radially inwards. Gaps are between the radial magnets 9 and some parts of each radial receiving slot 8a provided, which the long slots, that is, the two-sided connection slots 11d correspond. Thus, the magnetic resistance of the rotor core 8th increases, whereby the magnetic flux leakage is lowered.

The 30 to 32A show an eleventh embodiment.

This in 31 shown core sheet 11 includes a short independent slot 11g , an independent slot 11c and two first unilateral connection slots 11e , That is, the core sheet 11 from 31 is equal to the core sheet 11 from 22 , except that one of the independent slots 11c of the core sheet 11 from 22 through the short independent slot 11g is replaced.

The rotor core 8th of the 30 and 32 is made by making the core sheets 11 from 31 in layers along the rotor axis 13 arranged and rotated individually by 90 °.

Therefore, the eleventh embodiment has the advantages of 21 to 23A and the benefits of 27 to 29A ,

The core sheets 11 from 31 can also be arranged in layers, with each core sheet 11 in relation to the previous core sheet 11 is turned around. In this case are the cross-sectional areas of the inner bridges 8i on both circumferential sides of each radial receiving slot 8a along the entire axial direction of the rotor core 8th equal.

The 33 to 35A show a twelfth embodiment.

This in 34 shown core sheet 11 includes two single-sided connection slots 11e , a second single-sided communication slot 11f and a second single-ended connection slot 11h , That is, the core sheet 11 from 34 is equal to the core sheet 11 from 25 , except that one of the second one-sided connection slots 11f of the core sheet 11 from 25 is replaced by the short slot, which is the second one-sided connection short slot 11h is.

The rotor core 8th of the 33 and 35 is made by making the core sheets 11 from 34 in layers along the rotor axis 13 arranged and rotated individually by 90 °.

Therefore, the twelfth embodiment has both the advantages of 24 to 26A as well as the benefits of 27 to 29A ,

The 36 to 38A show a thirteenth embodiment.

This in 37 shown core sheet 11 includes a projecting connection slot 11j and three two-sided connection slots 11d , That is, the core sheet 11 from 37 is equal to the core sheet 11 from 19 , except that an independent slot 11c of the core sheet 11 from 19 through the projecting connection slot 11j is replaced. An essentially trapezoidal constraint extension 11i is at the radially inner end of the projecting connection slot 11j educated. The radially inner end of the projecting connection slot 11j stands with the circumferentially adjacent first preformed inclined receiving slot 61 and the second before shaped slanted receiving slot 62 in connection. The restriction extension 11i prevents any radial magnet 9 to move radially inwards. The oblique surfaces of the trapezoidal shape of the restriction process 11i lie on the associated first inclined magnet 71 and second inclined magnet 72 at a position where the first inclined magnet is 71 and the second inclined magnet 72 the radial magnet 9 do not touch. As a result, the constraint process hinders 11i the associated first inclined magnet 71 and the second inclined magnet 72 to move radially inwards. That is, the constraint extension 11i is seen from the axial direction not in point contact, but in line contact with the radial magnet 9 , the first inclined magnet 71 and the second inclined magnet 72 , The width of the constraint extension 11i is set larger than the width of the projecting connection slot 11j ,

The rotor core 11 of the 36 and 38 is made by making core sheets 11 from 37 in layers along the rotor axis 13 arranged and thereby individually rotated by 90 °.

• (30) Der vorspringende Verbindungsschlitz 11j, der mit dem Einschränkungsfortsatz 11i versehen ist, ist an einigen Teilen jedes radialen Aufnahmeschlitzes 8a entlang der axialen Richtung angeordnet. Die Einschränkungsfortsätze 11i hindern den dazugehörigen radialen Magneten 9, den ersten schrägstehenden Magneten 71 und den zweiten schrägstehenden Magneten 72 daran, sich radial nach innen zu bewegen, und bilden einen Zwischenraum zwischen dem radialen Magneten 9 und dem ersten schrägstehenden Magneten 71. Darüber hinaus bilden die Einschränkungsfortsätze 11i einen Zwischenraum zwischen dem zweiten schrägstehenden Magneten 72 und dem radialen Magneten 9. Das heißt, die Einschränkungsfortsätze 11i lassen die Innenbrücken 8i entfallen. Somit ist der Magnetwiderstand des Rotorkerns 8 erhöht, wodurch der Magnetflussstreuverlust gesenkt ist.
• (31) Den vorspringenden Verbindungsschlitz 11j durch Ausstanzen jedes Kernblechs 11 herzustellen, ist einfacher, als zum Beispiel kleine Fortsätze zu bilden, welche die radial nach innen gerichtete Bewegung der radialen Magnete 9, der ersten schrägstehenden Magnete 71 und der zweiten schrägstehenden Magnete 72 verhindern.
• (32) Das Kernblech 11 von 37 umfasst einen vorspringenden Verbindungsschlitz 11j, und beim Rest der vorgeformten radialen Aufnahmeschlitze handelt es sich um die beidseitigen Verbindungsschlitze 11d. Somit ist der Magnetflussstreuverlust im Vergleich bei spielsweise zu einem Fall reduziert, bei dem das Kernblech 11 zwei oder mehr vorspringende Verbindungsschlitze 11j umfasst, oder zu einem Fall, bei dem jedes Kernblech 11 die unabhängigen Schlitze 11c anstatt der beidseitigen Verbindungsschlitze 11d umfasst.

The eleventh embodiment has the following advantages.

• (30) The projecting connection slot 11j , that with the restriction process 11i is at some parts of each radial receiving slot 8a arranged along the axial direction. The constraint extensions 11i prevent the associated radial magnet 9 , the first inclined magnet 71 and the second inclined magnet 72 to move radially inward and form a space between the radial magnet 9 and the first inclined magnet 71 , In addition, the restriction processes form 11i a space between the second inclined magnet 72 and the radial magnet 9 , That is, the constraint extensions 11i let the inner bridges 8i omitted. Thus, the magnetic resistance of the rotor core 8th increases, whereby the magnetic flux leakage is lowered.
• (31) The projecting connection slot 11j by punching out each core sheet 11 It is easier to make than, for example, small projections which constitute the radially inward movement of the radial magnets 9 , the first oblique magnet 71 and the second inclined magnets 72 prevent.
• (32) The core sheet 11 from 37 includes a projecting connection slot 11j and the remainder of the preformed radial receiving slots are the two-sided connecting slots 11d , Thus, the magnetic flux leakage is reduced in comparison, for example, to a case where the core sheet 11 two or more protruding connection slots 11j includes, or to a case where each core sheet 11 the independent slots 11c instead of the two-sided connection slots 11d includes.

The 39 to 42 show a fourteenth embodiment.

As in 40A The thickness of each core sheet is shown 11 referred to as core sheet thickness T. As in 40B is shown is the radial dimension of each slot 8c The radial width dimension Y is set equal to 4T (Y = 4T) to satisfy Y ≦ 4T. In the present embodiment, the core plate thickness T is set equal to 0.4 mm, and the radial width dimension Y is set equal to 1.6 mm.

As in 40B is the circumferential distance between each pair of outer circumferential extensions 8d as the narrowing distance XC of each radial receiving slot 8a designated.

As in 40B is shown is the radial dimension of each wide outer bridge 8k referred to as the outer bridge dimension AB. The radial dimension of the outer circumferential extensions 8d is referred to as a radial extension dimension W.

As in 40C is the radial dimension of each V-slot outer bridge 8w equal to the outer bridge dimension AB attached. In the present embodiment, the outer bridge dimension AB is set to 0.4 mm. That is, the outer bridge dimension AB is set equal to the core plate thickness T (AB = T).

The radial dimension of each intermediate slant bridge 8m is designated as the intermediate oblique slot bridge dimension BB. The intermediate oblique slot bridge dimension BB is set larger than the outer bridge dimension AB (BB> AB). In the present embodiment, the intermediate oblique slot bridge dimension BB is set to 0.6 mm.

As in 40D shown is the width of the inner bridges 8i referred to as inner bridge dimension CB. The intermediate oblique slot bridge dimension BB is set larger than the inner bridge dimension CB (BB> CB). In the present embodiment, the inner bridge dimension CB is set equal to 0.4 mm (AB = CB = T).

• (33) Die Breitschlitze 8c erhöhen den Magnetwiderstand an den radial äußeren Enden der radialen Aufnahmeschlitze 8a und trennen die Magnetpfade von den radialen Magneten 9, wodurch der Magnetflussstreuverlust des Rotorkerns 8 gesenkt ist.

The fourteenth embodiment has the following advantage.

• (33) The slits 8c increase the magnetoresistance at the radially outer ends of the radial receiving slots 8a and separate the magnetic paths from the radial magnets 9 , whereby the magnetic flux leakage of the rotor core 8th is lowered.

Based on the test result of 41 a setting is made such that Y ≤ 4T (Y ≤ 1.6 mm) is satisfied. Thus, the strength of the outer circumferential projections becomes 8d achieved without the radial width dimension Y of the slits 8c to increase excessively. This achieves the strength of the outer circumferential extensions 8d that is necessary to the radial magnets 9 to prevent it from moving radially outward. That is, the size of the rotor 2 is reduced without the radial extension dimension W of the outer circumferential projections 8d to reduce more than necessary. The slits 8c Effectively lower the magnetic flux leakage, and the size of the rotor 2 is reduced.

41 Fig. 12 shows the result of experiment for the relationship between changes in the radial width dimension Y and the size ratio of the rotor 2 which is necessary to achieve the torque characteristic with a predetermined value. In the experiment was the diameter of the rotor 2 that is, the diameter of the rotor core 8th , fixed, the outer bridge dimension AB was fixed, and the size of the radial magnets 9 and the radial position of the radial magnets 9 were stationary. That is, the size ratio of the rotor represents the axial dimension ratio of the rotor 2 that is, the axial dimension ratio of the rotor core 8th The predetermined value for the torque characteristic has been based on the torque characteristic of the rotor core 8th set when the slits 8c were not provided. The rotor size ratio required to obtain the predetermined value for the torque characteristic was measured for each case where the throat distance XC is set equal to 0.4 mm, 0.8 mm, 1.6 mm and 2.4 mm was. As mentioned in the description of the fourteenth embodiment, AB = T = CB = 0.4 mm.

There, as in 41 As shown, the throat distance XC has been increased, the size of the rotor 2 reduced. That is, because when the throat distance XC was increased, the magnetic flux leakage of the rotor core 8th was lowered. Corresponding 41 becomes the size of the rotor in cases of any narrowing distance XC 2 decreases until the radial width dimension Y reaches 4T (1.6 mm) from zero. However, even if the radial width dimension Y is set larger than 4T, the size of the rotor 2 be made smaller than in the case where Y is 4T (Y = 4T).

Thus, the strength of the rotor core becomes 8th if the radial width dimension is set larger than 4T, unnecessarily lowered. This also causes the need for the radial extension dimension W of the outer circumferential extensions 8d to reduce the strength of the outer circumferential processes 8d could lower.

However, in the present embodiment, Y is set smaller than or equal to 4T (Y ≦ 4T). Thus, the size of the rotor 2 reduced, without the strength of the outer circumferential extensions 8d unnecessarily lower. For example, if the strength of the äuße ren circumferential projections 8d low, could be the radial magnets 9 the outer circumferential processes 8d by the centrifugal force caused by the rotation of the rotor 2 is effected. That is, the radial magnets 9 could move radially outward.

• (34) Eine Einstellung erfolgt so, dass Y = 4T (Y = 1,6 mm) erfüllt ist. Auf diese Weise wird die Größe des Rotors 2 minimiert, ohne die Festigkeit der äußeren umfänglichen Fortsätze 8d unnötig zu senken (siehe 41).
• (35) Die Außenbrückenabmessung AB und die Zwischenschrägschlitzbrückenabmessung BB sind so eingestellt, dass BB > AB erfüllt ist. Wie aus dem Versuchsergebnis von 42 hervorgeht, senkt die vorliegende Ausführungsform den Magnetflussstreuverlust wie in dem Fall, bei dem BB gleich AB (BB = AB) angesetzt ist, und die Größe des Rotors 2 ist verkleinert. Die vorliegende Ausführungsform erzielt die Festigkeit der Zwischenschrägschlitzbrücken 8m und erzielt die Festigkeit des Rotorkerns 8 im Vergleich zu beispielsweise dem Fall, bei dem BB gleich AB (BB = AB) angesetzt ist.

However, the present embodiment achieves the strength of the outer circumferential extensions 8d , The result is the size of the rotor 2 while simultaneously reducing the displacement of the radial magnets 9 is prevented. Namely, the present embodiment finely optimizes the shape and dimension of the wide slots 8c , The present embodiment sees the dimension of the wide slots 8c so that the magnetic flux leakage is lowered effectively. As a result, the size of the motor is reduced.

• (34) Adjustment is made so that Y = 4T (Y = 1.6mm) is satisfied. In this way, the size of the rotor 2 minimized, without the strength of the outer circumferential extensions 8d unnecessarily lower (see 41 ).
• (35) The outer bridge dimension AB and the intermediate oblique slot bridge dimension BB are set so that BB> AB is satisfied. As from the test result of 42 As can be seen, the present embodiment lowers the magnetic flux leakage as in the case where BB is set equal to AB (BB = AB) and the size of the rotor 2 is reduced. The present embodiment achieves the strength of the intermediate oblique slot bridges 8m and achieves the strength of the rotor core 8th compared to, for example, the case where BB equals AB (BB = AB).

42 shows the test result of the size ratio of the rotor 2 which is required to obtain the torque characteristic at the predetermined value when the outer bridge dimension AB, the intermediate oblique slot bridge dimension BB and the inner bridge dimension CB are changed. As a reference value, the rotor size ratio in the case where AB = BB = CB = 0.4 mm is referred to as one (the rotor size ratio = 1). The rotor size ratio was are obtained by setting the outer bridge dimension AB, the intermediate oblique slot bridge dimension BB and the inner bridge dimension CB to 0.6 mm, respectively. When only the outer bridge dimension AB was 0.6 mm, the rotor size ratio was about 1.09. When only the intermediate slant bridge dimension BB was 0.6 mm, the rotor size ratio was about 1.06. When only the inside bridge dimension CB was 0.6, the rotor size ratio was about 1.00.

• (36) Die Innenbrückenabmessung CB und die Zwischenschrägschlitzbrückenabmessung BB sind so angesetzt, dass BB größer als CB (BB > CB) ist. Wie aus 42 hervorgeht, ist der Magnetflussstreuverlust gesenkt, und die Größe des Rotors 2 ist wie in dem Fall verkleinert, bei dem BB gleich CB (BB = CB) ist. Wenn BB größer als CB (BB > CB) ist, ist darüber hinaus die Festigkeit der Zwischenschrägschlitzbrücken 8m höher als in dem Fall, bei dem BB gleich CB (BB = CB) ist. Wenn, wie in 42 gezeigt, die Außenbrückenabmessung feststehend ist, wird, selbst wenn die Zwischenschrägschlitzbrückenabmessung BB auf 0,6 mm eingestellt ist, was größer ist als die Innenbrückenabmessung CB, das Rotorgrößenverhältnis nicht größer als in dem Fall, bei dem BB = CB = 0,4 mm ist. Somit ist, indem die Zwischenschrägschlitzbrückenabmessung BB größer angesetzt wird als die Innenbrückenabmessung CB, die Größe der Rotors 2 wie in dem Fall verkleinert, bei dem BB gleich CB (BB = CB) ist. Darüber hinaus ist die Festigkeit der Zwischenschrägschlitzbrücken 8m erhöht, wodurch die Festigkeit des Rotorkerns 8 erhöht ist.
• (37) Die Außenbrückenabmessung AB ist gleich T (AB = T) angesetzt. Somit ist der Querschnitt der breiten Außenbrücke 8k und der V-Schlitz-Außenbrücke 8w in jedem Kernblech 11 quadratisch. So erhöht die vorliegende Ausführungsform die Festigkeit der breiten Außenbrücken 8k und der V-Schlitz-Außenbrücken 8w, während der Magnetflussstreuverlust der breiten Außenbrücken 8k und der V-Schlitz-Außenbrücken 8w im Vergleich zu beispielsweise einem Fall gesenkt wird, bei dem AB nicht gleich T ist.

As in 42 is shown, the rotor size ratio obtained when BB is 0.6 mm is almost 1.00. That is, even if the intermediate slant bridge dimension BB is set larger than the outer bridge dimension AB (BB> AB), the rotor size ratio does not change much from the case when BB is AB when the inner bridge dimension CB is fixed. Thus, if BB is greater than AB (BB> AB), the size of the rotor 2 as in the case where BB equals AB (BB = AB). That is, when BB is greater than AB (BB> AB), the strength of the intermediate slant slot bridges is 8m as compared to the case where BB equals AB (BB = AB). That is, by setting the intermediate oblique slot bridge dimension BB larger than the outer bridge dimension AB, the strength of the rotor core is 8th increases while maintaining the torque characteristic is maintained.

• (36) The inner bridge dimension CB and the intermediate oblique slot bridge dimension BB are set so that BB is larger than CB (BB> CB). How out 42 As can be seen, the magnetic flux leakage is reduced, and the size of the rotor 2 is reduced in size as in the case where BB is equal to CB (BB = CB). In addition, when BB is larger than CB (BB> CB), the strength of the intermediate oblique slot bridges is 8m higher than in the case where BB equals CB (BB = CB). If, as in 42 In addition, even when the intermediate slant bridge dimension BB is set to 0.6 mm, which is larger than the inner bridge dimension CB, the rotor size ratio does not become larger than in the case where BB = CB = 0.4 mm , Thus, by making the intermediate slant bridge dimension BB larger than the inner bridge dimension CB, the size of the rotor is 2 as reduced in the case where BB equals CB (BB = CB). In addition, the strength of the Zwischenschrägschlitzbrücken 8m increases, thereby increasing the strength of the rotor core 8th is increased.
• (37) The outer bridge dimension AB is set equal to T (AB = T). Thus, the cross section of the wide outer bridge 8k and the V-slot outer bridge 8w in every core sheet 11 square. Thus, the present embodiment increases the strength of the wide outer bridges 8k and the V-slot external bridges 8w during the magnetic flux leakage of the wide outer bridges 8k and the V-slot external bridges 8w is lowered compared to, for example, a case where AB is not equal to T.

The 43 to 48 show a fifteenth embodiment.

As in 43 is shown, the embedded magnetic motor comprises a motor housing 41 that the stator 1 receives. The motor housing 41 includes a yoke 42 and an end plate 43 , The yoke 42 is a cylinder with a bottom. The end plate 43 closes the opening of the yoke 42 , The stator 1 is on the inner peripheral surface of the yoke 42 attached.

A first camp 33 is at the bottom portion of the yoke 42 arranged. A second camp 34 is in the middle of the end plate 43 arranged. The first camp 33 and the second camp 34 store the rotary shaft 7 rotatably.

As in 43 is shown is an integrated Hall circuit (Hall IC) 51 by means of a substrate 52 at the end plate 43 arranged. The integrated Hall circuit 51 is a magnetic sensor, which is a rotation of the rotor 2 by detecting the magnetic flux leakage of the rotor 2 detected in the axial direction. That is, the integrated Hall circuit 51 detects the rotational position of the rotor 2 that is, the angle of rotation. The integrated Hall circuit 51 is an axial end surface 2a of the rotor 2 facing. Based on signals from the integrated Hall circuit 51 a controller (not shown) generates one from the stator 1 Outgoing optimum rotary magnetic field, and rotates as a result, the rotor 2 reliable.

As in the 44 and 45 is shown is the integrated Hall circuit 51 arranged radially further out than the mounting slot 18 , which is between one of the first inclined magnets 71 and the associated second inclined magnet 72 is arranged. The integrated Hall circuit 51 is in a radially outer region H of the rotor core 8th arranged. The plus and minus poles of the magnetic flux detected in the radially outer region H become only once per rotation cycle of the rotor 2 vice versa.

The side surfaces of the first inclined magnet 71 and the second inclined magnet 72 , which face each other, are as inclined magnetic surfaces 71a . 72a designated. Viewed from the axial direction are the centers of the inclined magnetic surfaces 71a . 72a referred to as centers MX. In the present embodiment, the radially outer region is H ra dial located further out than the midpoints MX. That is, the radially outer region H is a region between the centers MX and the rotor outer peripheral surface 8r ,

The radially outer region H refers to a region of the rotor core 8th between every first inclined magnet 71 and the associated second inclined magnet 72 in which the magnetic flux density is high when the coils 6 no electrical power is supplied. That is, the radially outer region H is an area of the rotor core 8th with high magnetic flux density when no electric current is supplied to the motor. The radially outer region H corresponds to a region of the rotor core 8th which achieves magnetic saturation (based on a test result that is not reproduced). That is, the radially outer region H is a region of the rotor core with magnetic saturation.

The 46 to 48 describe a development process for the embedded magnetic motor for determining the radial position of the integrated Hall circuit 51 , The development method comprises a measuring step S1 and a positioning step S2. That is, the development method is a manufacturing method of the embedded magnet motor.

First, in the measuring step 51 the position of the integrated Hall circuit 51 so determined that they are the axial end face 2a of the rotor 2 is facing. While the radial position of the integrated Hall circuit 51 is changed, moreover, the magnetic flux characteristic of each radial position is measured. As in 46 2, the positions of a first integrated Hall circuit are shown 51a up to an eighth integrated Hall circuit 51h from an inner peripheral surface 8v of the rotor 2 to the rotor outer peripheral surface 8r stated. 47 shows a first magnetic flux density characteristic Za up to a fifth magnetic flux density curve Ze of the first integrated Hall circuit 51a until the fifth integrated Hall circuit 51e with respect to the rotation angle of the rotor core 8th , 48 shows a sixth magnetic flux density characteristic Zf up to an eighth magnetic flux density characteristic Zh of the sixth integrated Hall circuit 51f to the eighth integrated Hall circuit 51h ,

As in 47 is shown, the first magnetic flux density characteristic Za to fifth magnetic flux density characteristic Ze undergo a point at which the magnetic flux density is zero several times during one cycle of magnetic flux variation. That is, there are several zero passes during one cycle of magnetic flux change. That is, the positive and negative signs of the magnetic flux density are reversed several times. The reversal of the plus and minus poles of the magnetic flux is respectively at the north pole and south pole of the rotor 2 detected. A cycle of magnetic flux change is a period during which the rotor 2 rotated by 90 °, that is, a period during which the pair consisting of the first inclined magnet 71 and the second inclined magnet 72 on the integrated Hall circuit 51 passes. That is, one cycle of the magnetic flux variation is a period between the pair of the first inclined magnet 71 and the second inclined magnet 72 , For example, the fourth magnetic flux density characteristic Zd increases from zero (the magnetic flux density = 0) to about 130 mT, and then drops to about -30 mT. After rising to about 30 mT, the fourth magnetic flux density characteristic Zd then drops to about -150 mT and then becomes zero (magnetic flux density = 0). That is, the fourth magnetic flux density characteristic Zd causes three zero passes during one cycle.

As in 48 is shown, the sixth magnetic flux density characteristic Zf to eighth magnetic flux density characteristic Zh undergo only once during one cycle of the magnetic flux variation a point where the magnetic flux density is zero. That is, it occurs only once a zero pass. That is, the positive and negative poles of the magnetic flux, between the first inclined magnet 71 and the second inclined magnet 72 are reversed only once during a cycle.

In the position determining step S2, the radially outer area H is set accurately, and the position of the Hall integrated circuit 51 is determined in the radially outer region H based on the result of the measuring step S1. The sixth magnetic flux density characteristic Zf to eighth magnetic flux density characteristic Zh, in which the positive and negative poles of the magnetic flux are reversed only once during one cycle of magnetic flux variation, become as in FIG

48 shown accurately. As a result, the radial positions of the sixth integrated Hall circuit become 51f to eighth integrated Hall circuit 51h , in the 46 are shown as radially outer region H set.

As in 45 is shown in the present embodiment, the integrated Hall circuit 51 at the position of the seventh integrated Hall circuit 51g arranged corresponding to the seventh magnetic flux density curve Zg. As in 46 is shown, a line is the points on the first inclined magnet 71 and the second inclined magnet 72 which are closest to each other, referred to as the narrowest line L. The seventh integrated Hall circuit 51g is immediate arranged radially within the narrowest line L.

As in 45 is shown, are the mounting slot 18 and the rivet 19 arranged adjacent to the and radially inwardly from the radially outer region H. In 45 is a middle circle MC, which is a circle passing through the center MX of the first inclined magnet 71 and the center MX of the second inclined magnet 72 runs as a double-dashed line around the rotor axis 13 shown. The mounting slot 18 is arranged radially inwardly of the central circle MC. The distance between the seventh integrated Hall circuit 51g and the mounting slot 18 is greater than the size of the sixth integrated Hall circuit 51f ,

• (38) Die integrierte Hall-Schaltung 51 ist so angeordnet, dass sie der axialen Endfläche 2a des Rotors 2 zugewandt ist. Die integrierte Hall-Schaltung 51 ist im radial äußeren Bereich H angeordnet. Die Plus- und Minuspole des Magnetflusses, der durch die integrierte Hall-Schaltung 51 erfasst wird, werden nur einmal während eines Zyklus der Magnetflussveränderung zwischen dem ersten schrägstehenden Magneten 71 und dem zweiten schrägstehenden Magneten 72 im radial äußeren Bereich H umgekehrt. Das heißt, die erfasste Magnetflussdichte erfährt nur einmal während eines Zyklus der Magnetflussveränderung einen Nulldurchgang. Auf diese Weise erfasst die vorliegende Ausführungsform die Drehposition des Rotors 2 hochgenau mit einem einfachen Aufbau, ohne einen Drehmelder (Resolver) oder einen Sensormagneten zu verwenden.

The fifteenth embodiment has the following advantage.

• (38) The integrated Hall circuit 51 is arranged so that it is the axial end surface 2a of the rotor 2 is facing. The integrated Hall circuit 51 is arranged in the radially outer region H. The plus and minus poles of the magnetic flux caused by the integrated Hall circuit 51 is detected only once during one cycle of the magnetic flux change between the first inclined magnet 71 and the second inclined magnet 72 in the radially outer region H reversed. That is, the detected magnetic flux density undergoes a zero crossing only once during one cycle of magnetic flux variation. In this way, the present embodiment detects the rotational position of the rotor 2 highly accurate with a simple structure, without using a resolver or a sensor magnet.

That is, the present invention eliminates the need for an expensive resolver of the world having a complicated structure. Also, the present invention uses the magnetic flux of the radial magnets 9 , the first oblique magnet 71 and the second magnets 72 , which are the magnetic poles of the rotor 2 form. Thus, no additional sensor magnet is used. Therefore, the present embodiment reduces the number of components and the size and has a simple structure. That is, the present embodiment does not require a sensor rotor of a resolver, nor is it necessary to determine the position of the sensor magnet on the rotor with high accuracy.

As in 46 shown are the first integrated Hall circuit 51a to fifth integrated Hall circuit 51e In this case, the plus and minus poles of the detected magnetic flux of the integrated Hall circuit are arranged radially further inward than the radially outer region H. 51 twice or more between the first inclined magnet 71 and the second inclined magnet 72 be reversed, the pole of the detected magnetic flux as in 47 shown first magnetic flux density curve Za to fifth magnetic flux density curve Ze also at other points than the inflection point of the magnetic poles of the rotor 2 vice versa. That is, in the case of 47 is the detection of the rotational position of the rotor 2 difficult. However, the avoids in 48 The present embodiment shown has such a problem. Namely, the present embodiment detects the rotational position of the rotor 2 effortless and highly accurate with a simple structure. That's how it works for the stator 1 generates optimal rotary magnetic field, and the rotation and the drive of the rotor 2 are reliably controlled.

• (39) Der radial äußere Bereich H ist ein Bereich im Rotorkern 8, in dem die Magnetflussdichte hoch ist, wenn dem eingebetteten Magnetmotor kein elektrischer Strom zugeführt wird. Das heißt, der radial äußere Bereich H ist der magnetische Sättigungsbereich des Rotorkerns 8. Die Befestigungsschlitze 18 und die Niete 19 sind angrenzend an den und radial nach innen gerichtet vom radial äußeren Bereich H angeordnet.

As a comparative example, the rotational position of the rotor can be detected with high accuracy by using, for example, a resolver. However, the resolver has a complicated structure and is expensive. Moreover, when the resolver is used, the circumferential position of a sensor rotor, which is rotated integrally with the rotor, must be determined with high accuracy to detect the rotational position (the rotational angle) of the rotor with high accuracy. Although, instead of the resolver, a sensor magnet that rotates integrally with the rotor and a magnetic sensor that detects the magnetic flux of the sensor magnet are used, high accuracy is required to determine the position of the sensor magnet in the circumferential direction of the rotor. That is, the same problem occurs as with the resolver when the sensor magnet is in addition to the first inclined magnet 71 and second inclined magnet 72 is used. In the present embodiment, the resolver and the additional sensor magnet are unnecessary because the magnetic flux of the first inclined magnets 71 and second inclined magnets 72 by arranging the integrated Hall circuit 51 in the radially outer region H is measured.

• (39) The radially outer region H is an area in the rotor core 8th in which the magnetic flux density is high when no electric current is supplied to the embedded magnet motor. That is, the radially outer region H is the magnetic saturation region of the rotor core 8th , The mounting slots 18 and the rivet 19 are disposed adjacent to and radially inwardly from the radially outer region H.

If, for example, the mounting slots 18 and the rivet 19 be arranged in the magnetic saturation region, the cogging torque and the torque ripple could be adversely affected become.

• (40) Das Entwicklungsverfahren für den eingebetteten Magnetmotor, das heißt, das Herstellungsverfahren, umfasst den Messschritt S1 und den Positionsbestimmungsschritt S2. Im Messschritt S1 ist die integrierte Hall-Schaltung 51 zur Erfassung von Drehung, die den Magnetflussstreuverlust des Rotors 2 in der axialen Richtung erfasst, so angeordnet, dass sie der axialen Endfläche 2a des Rotors 2 zugewandt ist. Im Messschritt S1 wird, während die radiale Position der integrierten Hall-Schaltung 51 verändert wird, die Magnetkennlinie des Rotors 2 für jede radiale Position gemessen. Im Positionsbestimmungsschritt S2 wird der radial äußere Bereich H auf Grundlage des Ergebnisses des Messschritts S1 bestimmt, und es wird die Position der integrierten Hall-Schaltung 51 im radial äußeren Bereich H bestimmt. Die Plus- und Minuspole des Magnetflusses, der durch den Magnetsensor erfasst wird, der im radial äußeren Bereich H angeordnet ist, werden nur einmal während eines Zyklus des Magnetflusses umgekehrt. So lässt sich der eingebettete Magnetmotor der vorliegenden Ausführungsform mühelos entwickeln und herstellen.

However, because the mounting slots 18 and the rivet 19 In the present embodiment, outside the radially outer region H, the negative influence is avoided. In addition, the mounting slots 18 and the rivet 19 disposed adjacent to the radially inner end of the radially outer region H. In this way, the mounting slots 18 and the rivet 19 arranged radially as far outside as possible, reflecting the mechanical strength of the rotor core 8th maximized.

• (40) The developing method for the embedded magnetic motor, that is, the manufacturing method, includes the measuring step S1 and the position determining step S2. In measuring step S1, the integrated Hall circuit 51 for detecting rotation, which is the magnetic flux leakage of the rotor 2 detected in the axial direction, arranged so as to be the axial end surface 2a of the rotor 2 is facing. In measuring step S1, while the radial position of the integrated Hall circuit 51 is changed, the magnetic characteristic of the rotor 2 measured for each radial position. In the position determining step S2, the radially outer region H is determined based on the result of the measuring step S1, and it becomes the position of the Hall integrated circuit 51 determined in the radially outer region H. The plus and minus poles of the magnetic flux detected by the magnetic sensor disposed in the radially outer region H are inverted only once during one cycle of the magnetic flux. Thus, the embedded magnet motor of the present embodiment can be easily developed and manufactured.

The The above embodiments may be as follows be modified.

In 2 must be the number of short slits 11a every core sheet 11 not necessarily one, but can be two or more. The number of long slots 11 every core sheet 11 is obtained by the number of short slits 11a is subtracted from (P / 2).

The short slits 11a are preferably at regular intervals along the axial direction of the rotor core 8th arranged. That is, the inner constraint sections 8e are preferably at regular intervals in the axial direction of the radial receiving slots 8a distributed. Each of the core sheets 11 can have two short slits 11a , which are arranged side by side in the circumferential direction, and two long slots 11b which are arranged side by side in the circumferential direction include. In this case, several core sheets are arranged in layers, each rotated by 180 °. Also, you can have several core sheets 11 be arranged in layers, with each core sheet 11 in relation to the previous core sheet 11 is turned around. In this case, the short slots 11a that is, the inner constraint sections 8e at regular intervals in the axial direction of the radial receiving slots 8a distributed.

The short slits 11a that is, the inner constraint sections 8e , may be at irregular intervals in the axial direction of the radial receiving slots 8a be arranged.

Of the second radial distance R2 does not necessarily have to be smaller than or may be equal to the third radial distance R3, but may be larger be set as the third radial distance R3.

Of the first radial distance R1 does not necessarily have to be bigger may be smaller than the third radial distance R3 but may be smaller than be set equal to or equal to the third radial distance R3.

In 1A the overlap dimension R need not necessarily be set to SW / 2, but may be set so that 0 <R ≦ SW / 4 is satisfied. If 0 <R ≤ SW / 4 is satisfied, after the test result of 4 the magnetization rate is substantially highest. This is the inefficiency of the radial magnets 9 lowered further.

In 2 need the outer circumferential extensions 8d not necessarily just in the short slot 11a every core sheet 11 be trained, but can in the long slots 11b be educated. The outer circumferential processes 8d may be formed in all preformed radial receiving slots. That is, in 3 need the outer circumferential extensions 8d not necessarily at some parts of each radial receiving slot 8a can be arranged along the axial direction, but can over the entire axial direction of each radial receiving slot 8a be arranged.

In 8th need the inward extensions 8n not necessarily only at some parts of each radial receiving slot 8a can be formed along the axial direction, but can over the entire axial direction of each radial receiving slot 8a be educated.

In the core sheet 11 from 6 must be the inward extension 8n not necessarily just in the short slot 11a be formed, but can also be in the long slots 11b be educated.

The third width W3 of the inwardly directed extensions 8n from 7 not necessarily to about 1/3 of the first width W1 of the radial magnets 9 be set. The third width W3 of the after inward extensions 8n from 6 can take any value as long as it is only smaller than the first width W1 of the radial magnets 9 , To the magnetic flux leakage through the inward extensions 8n to suppress, is the third width W3 of the inwardly directed extensions 8n preferably smaller than or equal to 1/2 of the first width W1 of the radial magnets 9 stated.

In 12 must the inner circumferential extension 8u not necessarily just on the side surface 8p the radial receiving slot 8a that is, can be arranged counterclockwise, but can also, clockwise, on the side surface 8p be arranged of the radial receiving slot.

In 12 is the number of the inner circumferential extension 8u that in every core sheet 11 is formed, not limited to one, but may be two or more. The inner peripheral processes 8u are preferably at regular intervals in the axial direction of the rotor core 8th arranged. Also, if the inner circumferential extensions 8u in the two preformed radial receiving slots are formed side by side in the circumferential direction, the core sheets 11 arranged in layers and thereby each rotated by 180 °, or the core sheets 11 can be arranged in layers, with each core sheet 11 in relation to the previous core sheet 11 is turned around. In these cases, the inner circumferential extensions 8u at regular intervals in the axial direction of the rotor core 8th arranged.

In 13 can the inner circumferential extensions 8u at irregular intervals in the axial direction of the rotor core 8th be arranged.

In 19 is the number of independent slot 11c that in every core sheet 11 is not limited to one, but may be two or more. The number of two-sided connection slots 11d every core sheet 11 is obtained by the number of independent slots 11c is subtracted from (P / 2). The independent slots 11c are preferably at regular intervals in the axial direction of the rotor core 8th arranged. And that's because the inner bridges 8i at regular intervals in the axial direction of the rotor core 8th to be ordered.

In the core sheet 11 from 19 can have two independent slots 11c be arranged side by side in the circumferential direction, and there may be two bilateral connection slots 11d be arranged side by side in the circumferential direction. The circumferential distances between the independent slots 11c and between the two-sided connection slots 11d are 90 °. In this case, the core sheets can 11 arranged in layers and thereby each rotated by 180 °, or the core sheets 11 can be arranged in layers, with each core sheet 11 in relation to the previous core sheet 11 is turned around. In these cases, the independent slots 11c at regular intervals in the axial direction of the rotor core 8th arranged.

The independent slots 11c and the inner bridges 8i can be at irregular intervals in the axial direction of the rotor core 8th be arranged.

In the core sheet 11 from 19 The preformed radial receiving slots need not necessarily be either around the independent slots 11c or the two-sided connection slots 11d act. The preformed radial receiving slots can be arbitrary, as long as only the inner bridges 8i at some parts of the rotor core 8th are formed along the axial direction.

The core sheets 11 from 22 may be arranged in layers such that the first unilateral connection slots 11e at least at some parts of each radial receiving slot 8a are arranged along the axial direction.

In 40B must have the radial width dimension Y of the wide slots 8c and the core sheet thickness T may not necessarily be set so as to satisfy Y = 4T, but may be set to satisfy Y <4T. For example, Y may be set equal to 2T, that is, 0.8 mm.

In the 40B to 40D For example, the outer bridge dimension AB, the intermediate oblique slot bridge dimension BB and the inner bridge dimension CB need not necessarily be set to BB = 0.6 mm and AB = CB = 0.4 mm. That is, a setting does not necessarily have to be done so that BB> AB = CB is satisfied. For example, the outer bridge dimension AB, the intermediate oblique slot bridge dimension BB, and the inner bridge dimension CB may be set to AB = BB = CB, that is, 0.4 mm. That is, when the outer bridge dimension AB differs from the inner bridge dimension CB, the size of the rotor decreases 2 according to the larger value, as out 42 evident. Thus, it is preferable to set AB equal to BB.

In the 39 and 44 need the slits 8c and the outer circumferential extensions 8d not necessarily along the entire axial direction of the rotor core 8th be formed, but can be attached to some parts of the rotor core 8th be formed along the axial direction. For example can the slits 8c and the outer circumferential extensions 8d at both axial ends of the rotor core 8th or in every tenth of the core sheets 11 be educated. Also, the wide slots 8c in 44 be omitted. The radial magnets 9 may be extended to the radially outer end of the radial receiving slots.

In 39 stands the pair of outer circumferential extensions 8d from the circumferential ends of each radial receiving slot 8a by the same amount. However, the outer circumferential extensions can 8d also only from one peripheral side of each radial receiving slot 8a protrude. Also, the pair of outer circumferential extensions 8d protrude from both circumferential sides by different amounts of protrusion.

In 46 is the integrated Hall circuit 51 not limited thereto, as the seventh integrated Hall circuit 51g but may be on the sixth integrated Hall circuit 51f or eighth integrated Hall circuit 51h be changed. The sixth integrated Hall circuit 51f is adjacent to the middle circle MC and radially outside the middle circle MC. That is, the sixth integrated Hall circuit 51f is immediately radially outside of one of the mounting slots 18 and the associated rivet 19 arranged. The distance between the sixth integrated Hall circuit 51f and the narrowest line L is larger than the size of the seventh integrated Hall circuit 51g , The eighth integrated Hall circuit 51h is adjacent to the narrowest line L and radially outward of the narrowest line L.

As in 48 is shown, from the sixth magnetic flux density characteristic Zf to the eighth magnetic flux density characteristic Zh, the one having the steepest inclination around the point where the magnetic flux density becomes zero, the eighth magnetic flux density characteristic Zh. That is, the eighth integrated Hall circuit 51h distinguishes exactly the changes in the magnetic poles and is most suitable to the rotational position of the rotor 1 capture. The eighth integrated Hall circuit 51h is in the rotor 1 furthest radially outward. Thus, the eighth magnetic flux density characteristic Zh has a greater inclination than the sixth magnetic flux density characteristic Zf and the seventh magnetic flux density characteristic Zg around the point where the positive and negative poles of the magnetic flux are reversed.

In 45 need the mounting slots 18 and the rivet 19 not necessarily adjacent to the radially outer region H and radially disposed within the radially outer region H. The rivet 19 can be changed to another fastening part such as a screw and a nut. The rotor core 8th does not necessarily have by layering the core sheets 11 getting produced. For example, the rotor core 8th be prepared by sintering magnetic powder. That is, the rotor core 8th may be a sintered core, and the sintered core provides the need for the mounting slots 18 and the rivets 19 from the world.

The measuring step S1 is not limited to the first magnetic flux density characteristic Za to eighth magnetic flux density characteristic Zh of the first integrated Hall circuit 51a to eighth integrated Hall circuit 51h to eat. The radially outer region H can be based on the centers MX of each of the first inclined magnet 71 and the associated second inclined magnet 72 determine.

In 1 need the V-slot outside spaces 8g not necessarily trained. The radially outer ends of the first inclined receiving slots 81 allowed the first inclined magnets 71 touch. Also allowed the radially outer ends of the second inclined receiving slots 82 the second inclined magnets 72 touch.

In 1 Each pair must consist of the first inclined receiving slot 81 and the second inclined receiving slot 82 not necessarily separate, but may be related. That is, each pair consisting of the first inclined receiving slot 81 and the second inclined receiving slot 82 does not necessarily have to be independent of each other, but may be at the radially outer end of the V-shaped receiving slot 8b communicate with each other to form a slot.

In 1A must be the width of the inner bridges 8i not necessarily be constant along the radial direction but may vary along the radial direction. For example, in 1A the triangular spaces 8j be omitted.

The core sheets 11 from 2 do not necessarily have layers around the rotor axis 13 arranged and thereby each individually rotated so that each of the core sheets 11 is shifted in the circumferential direction. The core sheets 11 can be arranged in layers, each one of a certain number existing group of core sheets 11 is turned. In this case, the number of times that is the core sheets 11 be turned, lowered, which facilitates the production.

The core sheets 11 that the rotor core 8th Forms do not necessarily have to be of one species, but can also be different types of core be used. For example, the number of short slots 11a every core sheet 11 differ from each other.

In 1 need the first tilted magnets 71 and the second inclined magnets 72 not necessarily be substantially cuboidal and solid, but may be curved to form an arcuate shape, or the width may be irregular.

That is, with the V-shaped receiving slots 8b For example, the straight lines forming the V-shape may be curved, or the width of the straight lines of the V-shaped receiving slots 8b can be irregular.

The radial magnets 9 , the first tilted magnets 71 , the second inclined magnets 72 and the rotor core 8th from 1 need not necessarily be a body extending over the entire axial direction of the rotor core 8th extends. The radial magnets 9 , the first tilted magnets 71 , the second inclined magnets 72 and the rotor core 8th can be divided in the axial direction. The divided parts can be displaced in the circumferential direction and in the direction of the rotor axis 13 be arranged in layers. In this case, the cogging torque and the torque ripple of the embedded magnetic motor are further reduced. This is because of a fast magnetic flux change between the stator 1 and the rotor 2 is further reduced.

The number of teeth 4 and the number of magnetic poles P of 1 can be changed. That is, the number of radial magnets 9 , the first oblique magnet 71 and the second inclined magnets 72 can be changed to a number other than four.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - JP 2007-195391 [0002]

Claims (35)

Embedded magnet motor with a rotor ( 2 ), wherein an axis of the rotor as a rotor axis ( 13 ), wherein the rotor ( 2 ) a rotor core ( 8th ), radial magnets ( 9 ), whose number is expressed by P / 2, first oblique magnets ( 71 ), whose number is expressed by P / 2, and second oblique magnets ( 72 ) whose number is expressed by P / 2, wherein the rotor core ( 8th ) radial receiving slots ( 8a ), the number of which is expressed by P / 2, first inclined receiving slots (FIG. 81 ), the number of which is expressed by P / 2, and second inclined receiving slots (FIG. 82 ), the number of which is expressed by P / 2, wherein the radial receiving slots ( 8a ), the first inclined receiving slots ( 81 ) and the second inclined receiving slots ( 82 ) in the axial direction completely through the rotor core ( 8th ), wherein the radial receiving slots ( 8a ) substantially in a radial direction of the rotor core ( 8th ), and the first inclined receiving slots ( 81 ) and the second inclined receiving slots ( 82 ) linearly inclined with respect to the radial receiving slots ( 8a ), each pair consisting of a slanted receiving slot ( 81 ) and the associated second inclined receiving slot ( 82 ) a V-shaped receiving slot ( 8b ), wherein the tip of the V-shape of the rotor core ( 8th ) is directed radially outwards, wherein the radial receiving slots ( 8a ) and the V-shaped receiving slots ( 8b ) alternately in the circumferential direction of the rotor core ( 8th ) are arranged, wherein each of the radial receiving slots ( 8a ) one of the radial magnets ( 9 ), each of the first inclined receiving slots ( 81 ) one of the first inclined magnets ( 10a ), each of the second inclined receiving slots ( 82 ) one of the second inclined magnets ( 72 ), each of the radial magnets ( 9 ) between one of the first inclined magnets ( 71 ) and one of the second inclined magnets ( 72 ), each radial magnet ( 9 ) and the circumferentially adjacent first inclined magnet ( 71 ) form either a north pole or a south pole, and each radial magnet ( 9 ) and the circumferentially adjacent second inclined magnet ( 72 ), and the result is north poles whose number is expressed by P / 2 and south poles whose number is expressed by P / 2, that is, the number of magnetic poles of the rotor is expressed by P is, whereby the rotor core ( 8th ) is formed by several core laminates ( 11 ) are arranged in layers in the axial direction, each core sheet ( 11 ) preformed radial receiving slots ( 11a . 11b ), the number of which is expressed by P / 2, the preformed radial receiving slots ( 11a . 11b ) in the circumferential direction of the core sheet ( 11 ) are distributed, wherein the radial receiving slots ( 8a ) by laminating the preformed radial receiving slots (FIG. 11a . 11b ), with some of the preformed radial receiving slots (FIGS. 11a . 11b ) around short slits ( 11a ) and the rest by long slots ( 11b ), wherein the motor is characterized in that the distance between a radially inner end of each short slot ( 11a ) and the rotor axis ( 13 ) is referred to as a first radial distance R1, and wherein the distance between a radially inner end of each long slot ( 11a ) and the rotor axis ( 13 ) is referred to as the second radial distance R2, where R2 <R1, and where the short slots ( 11a ) at some parts of each radial receiving slot ( 8a ) are arranged along the axial direction, and as a result, the radially inner ends of the short slots (FIG. 11a ) the radial magnets ( 9 ) to move radially inward. Embedded magnet motor according to claim 1, characterized in that each core sheet ( 11 ) such a short slot ( 11a ). Embedded magnet motor according to claim 1 or 2, characterized in that the distance between a radially inner end of each first inclined receiving slot ( 81 ) and the rotor axis ( 13 ) is referred to as the third radial distance R3, and where R2 ≦ R3. Embedded magnet motor according to one of claims 1 to 3, characterized in that the distance between a radially inner end of each first inclined receiving slot ( 81 ) and the rotor axis ( 13 ) is referred to as the third radial distance R3, and wherein R3 <R1. Embedded magnet motor according to claim 4, characterized in that each radial receiving slot ( 8a ) through a pair of side surfaces ( 8p ) of a radial receiving slot which extend substantially in the radial direction, wherein when the rotor core ( 8th ) is viewed from the radial direction, radially inner ends of the first inclined receiving slots ( 81 ) and the second inclined receiving slots ( 82 ) are each provided with a mating surface (SX), wherein the mating surfaces (SX) the side surfaces (SX) 8p ) the radial receiving slots facing and substantially paral lel to the side surfaces ( 8p ) of the radial receiving slots, wherein the dimension of the counter-surfaces (SX) is referred to as a counter-surface dimension SW, wherein the dimension of a part of each counter-surface (SX) corresponding to the associated short slot (SX) 11a ), where the mating surface dimension SW and the overlapping dimension R are dimensions that extend along the side surfaces (FIG. 8p ) of the radial receiving slots, and where 0 <R ≦ SW / 2. Embedded magnet motor according to one of claims 1 to 5, characterized in that a direction which is perpendicular to the direction in which each radial receiving slot ( 8a ) seen from the axial direction, is referred to as the width direction, wherein a slot ( 8c ) at a radially outer end of each radial receiving slot ( 8a ), wherein a width (W2) of the wide slots ( 8c ) is greater than a width (W1) of the radial magnets ( 9 ), wherein the rotor core ( 8th ) inward extensions ( 8n ), each from the broad side extending central portion of one of the wide slots ( 8c ) protrude radially inwardly, and wherein a width (W3) of the inwardly directed extensions ( 8n ) is smaller than the width (W1) of the radial magnets ( 9 ), and the inward extensions ( 8n ) the radial magnets ( 9 ) to move radially outward. Embedded magnet motor according to claim 6, characterized in that the inwardly directed extensions ( 8n ) on some parts of the rotor core ( 8th ) are arranged along the axial direction. Embedded magnet motor according to claim 7, characterized in that each core sheet ( 11 ) the preformed radial receiving slots, with the inward extension ( 8n ) and includes the preformed radial receiving slots which are not provided with an inwardly directed extension (FIG. 8n ) are provided. Embedded magnet motor according to claim 8, characterized in that the inwardly directed extensions ( 8n ) in the short slots ( 11a ) are arranged. Embedded magnet motor according to claim 2, characterized in that the core sheets ( 11 ) in the circumferential direction in each case by 360 / (P / 2) ° shifted in layers are arranged. Embedded magnet motor with a rotor ( 2 ), wherein an axis of the rotor as a rotor axis ( 13 ), wherein the rotor ( 2 ) a rotor core ( 8th ), radial magnets ( 9 ), whose number is expressed by P / 2, first oblique magnets ( 71 ), whose number is expressed by P / 2, and second oblique magnets ( 72 ) whose number is expressed by P / 2, wherein the rotor core ( 8th ) radial receiving slots ( 8a ), the number of which is expressed by P / 2, first inclined receiving slots (FIG. 81 ), the number of which is expressed by P / 2, and second inclined receiving slots (FIG. 82 ), the number of which is expressed by P / 2, and the radial receiving slots ( 8a ), the first inclined receiving slots ( 81 ) and the second inclined receiving slots ( 82 ) in the axial direction completely through the rotor core ( 8th ), wherein the radial receiving slots ( 8a ) substantially in a radial direction of the rotor core ( 8th ) and the first inclined receiving slots ( 81 ) and the second inclined receiving slots ( 82 ) extend linearly inclined with respect to the radial direction, each pair of a slanted receiving slot ( 81 ) and the associated second inclined receiving slot ( 82 ) a V-shaped receiving slot ( 8b ), wherein the tip of the V-shape of the rotor core ( 8th ) is directed radially outwards, wherein the radial receiving slots ( 8a ) and the V-shaped receiving slots ( 8b ) alternately in the circumferential direction of the rotor core ( 8th ) are arranged, wherein each of the radial receiving slots ( 8a ) one of the radial magnets ( 9 ), each of the first inclined receiving slots ( 81 ) one of the first inclined magnets ( 71 ), each of the second inclined receiving slots ( 82 ) one of the second inclined magnets ( 72 ), each of the radial magnets ( 9 ) between one of the first inclined magnets ( 71 ) and one of the second inclined magnets ( 72 ), each radial magnet ( 9 ) and the circumferentially adjacent first inclined magnet ( 71 ) form either a north pole or a south pole, and each radial magnet ( 9 ) and the circumferentially adjacent second inclined magnet ( 72 ), and the result is north poles whose number is expressed by P / 2 and south poles whose number is expressed by P / 2, that is, the number of magnetic poles of the rotor is expressed by P is, whereby the rotor core ( 8th ) is formed by several core laminates ( 11 ) are arranged in layers in the axial direction, each core sheet ( 11 ) preformed radial receiving slots whose number is expressed by P / 2, wherein the preformed radial receiving slots in the circumferential direction of the core sheet ( 11 ) are distributed, wherein the radial receiving slots ( 8a ) are formed by laminating the preformed radial receiving slots, wherein the radial dimension of the preformed radial receiving slots is greater than the radial dimension of the radial magnets (FIG. 9 ), wherein the engine is characterized in that each core sheet ( 11 ) an extension ( 8u . 22b . 31a ) projecting into at least one of the preformed radial receiving slots, and when a direction perpendicular to the radial direction is referred to as a width direction, each projection (14) 8u . 22b . 31a ) protrudes from only one of the wide-side sides of the preformed radial receiving slot, and wherein the extensions ( 8u . 22b . 31a ) on at least some parts of each radial receiving slot ( 8a ) are arranged along the axial direction, and as a result the extensions ( 8u . 22b . 31a ) the radial magnets ( 9 ) to move radially inward. Embedded magnet motor according to claim 11, characterized in that each core sheet ( 11 ) only one such advantage ( 8u . 22b . 31a ). Embedded magnet motor according to claim 11 or 12, characterized in that the distance (R2) between the radially inner end of the radial receiving slot ( 8a ) and the rotor axis ( 13 ) smaller than or equal to the distance (R3) between the rotor axis ( 13 ) and the radially inner end of the first inclined receiving slot ( 81 ) is set. Embedded magnet motor according to one of claims 11 to 13, characterized in that the distance (R1) between the extension ( 8u . 22b ) and the rotor axis ( 13 ) is greater than the distance (R3) between the radially inner end of the first inclined receiving slot ( 81 ) and the rotor axis ( 13 ). Embedded magnet motor according to one of claims 11 to 14, characterized in that the broad side projection amount of the extension ( 22b ) smaller than half the width of the radial receiving slot ( 8a ), and wherein the core sheets ( 11 ) are arranged in layers such that the same number of extensions ( 22b ) from both broadside sides of each radial receiving slot ( 8a ) protrudes. Embedded magnet motor according to claim 12, characterized in that the core sheets ( 11 ) are arranged in layers in the circumferential direction by 360 / (P / 2) ° shifted. Embedded magnet motor with a rotor ( 2 ), wherein the rotor ( 2 ) a rotor core ( 8th ), radial magnets ( 9 ), whose number is expressed by P / 2, first oblique magnets ( 71 ), whose number is expressed by P / 2, and second oblique magnets ( 72 ) whose number is expressed by P / 2, wherein the rotor core ( 8th ) radial receiving slots ( 8a ), the number of which is expressed by P / 2, first inclined receiving slots (FIG. 81 ), the number of which is expressed by P / 2, and second inclined receiving slots (FIG. 82 ), the number of which is expressed by P / 2, and the radial receiving slots ( 8a ), the first inclined receiving slots ( 81 ) and the second inclined receiving slots ( 82 ) in the axial direction completely through the rotor core ( 8th ), wherein the radial receiving slots ( 8a ) substantially in a radial direction of the rotor core ( 8th ), and the first inclined receiving slots ( 81 ) and the second inclined receiving slots ( 82 ) extend linearly inclined with respect to the radial direction, each pair of a slanted receiving slot ( 81 ) and the associated second inclined receiving slot ( 82 ) a V-shaped receiving slot ( 8b ), wherein the tip of the V-shape of the rotor core ( 8th ) is directed radially outwards, wherein the radial receiving slots ( 8a ) and the V-shaped receiving slots ( 8b ) alternately in the circumferential direction of the rotor core ( 8th ) are arranged, wherein each of the radial receiving slots ( 8a ) one of the radial magnets ( 9 ), each of the first inclined receiving slots ( 81 ) one of the first inclined magnets ( 71 ) and each of the second inclined receiving slots (FIGS. 82 ) one of the second inclined magnets ( 72 ), each of the radial magnets ( 9 ) between one of the first inclined magnets ( 71 ) and one of the second inclined magnets ( 72 ), each radial magnet ( 9 ) and the circumferentially adjacent first inclined magnet ( 71 ) form either a north pole or a south pole, and each radial magnet ( 9 ) and the circumferentially adjacent second inclined magnet ( 72 ), and the result is north poles whose number is expressed by P / 2 and south poles whose number is expressed by P / 2, that is, the number of magnetic poles of the rotor is expressed by P is, whereby the rotor core ( 8th ) is formed by several core laminates ( 11 ) are arranged in layers in the axial direction, each core sheet ( 11 ) preformed radial receiving slots, the number of which is expressed by P / 2, first preformed inclined receiving slots ( 61 ), de number is expressed by P / 2, and second preformed inclined receiving slots ( 62 ), the number of which is expressed by P / 2, wherein the preformed radial receiving slots in the circumferential direction of the core sheet (FIG. 11 ), the radial receiving slots ( 8a ) are formed by layering the preformed radial receiving slots, the first inclined receiving slots ( 81 by laminating the first preformed inclined receiving slots (FIG. 61 ) are formed, and the second inclined receiving slots ( 82 by laminating the second preformed inclined receiving slots (FIG. 62 The motor is characterized in that some of the preformed radial receiving slots in each core sheet (FIG. 11 ) around bilateral connection slots ( 11d ) and the rest by independent slots ( 11c ), the radially inner end of each two-sided communication slot ( 11d ) with both the circumferentially adjacent first preformed inclined receiving slot (FIG. 61 ) as well as the second preformed inclined receiving slot ( 62 ), each independent slot ( 11c ) with neither the first preformed inclined receiving slot ( 61 ) still with the second preformed inclined receiving slot ( 62 ), an inner bridge ( 8i ) between each independent slot ( 11c ) and the associated first preformed inclined receiving slot ( 61 ), and another inner bridge ( 8i ) between each independent slot ( 11c ) and the associated second preformed inclined receiving slot ( 62 ), and wherein the independent slots ( 11c ) at some parts of each radial receiving slot ( 8a ) is arranged along the axial direction and as a result the inner bridges ( 8i ) the corresponding first inclined magnet ( 71 ) and the second inclined magnet ( 72 ) to move radially inward. Embedded magnet motor according to claim 17, characterized in that each core sheet ( 11 ) only one such independent slot ( 11c ). Embedded magnet motor according to claim 18, characterized in that the core sheets ( 11 ) are arranged in layers in the circumferential direction by 360 / (P / 2) ° shifted. Embedded magnet motor according to one of claims 17 to 19, characterized in that a direction which is perpendicular to the direction in which each radial receiving slot ( 8a ) seen from the axial direction, is referred to as the width direction, and wherein the width of the inner bridges ( 8i ) is constant along the radial direction. Embedded magnet motor according to one of claims 17 to 20, characterized in that the first inclined receiving slots ( 81 ) and the second inclined receiving slots ( 82 ) are independent and as a result an intermediate oblique slot bridge ( 8m ) extending in the radial direction between the radially outer end of each first inclined receiving slot (FIG. 81 ) and the radially outer end of the associated second inclined receiving slot ( 82 ) is provided. Embedded magnet motor with a rotor ( 2 ), wherein the rotor ( 2 ) a rotor core ( 8th ), radial magnets ( 9 ), whose number is expressed by P / 2, first oblique magnets ( 71 ), whose number is expressed by P / 2, and second oblique magnets ( 72 ) whose number is expressed by P / 2, wherein the rotor core ( 8th ) radial receiving slots ( 8a ), the number of which is expressed by P / 2, first inclined receiving slots (FIG. 81 ), the number of which is expressed by P / 2, and second inclined receiving slots (FIG. 82 ), the number of which is expressed by P / 2, and the radial receiving slots ( 8a ), the first inclined receiving slots ( 81 ) and the second inclined receiving slots ( 82 ) in the axial direction completely through the rotor core ( 8th ), wherein the radial receiving slots ( 8a ) substantially in a radial direction of the rotor core ( 8th ), and the first inclined receiving slots ( 81 ) and the second inclined receiving slots ( 82 ) extend linearly inclined with respect to the radial direction, each pair of a slanted receiving slot ( 81 ) and the associated second inclined receiving slot ( 82 ) a V-shaped receiving slot ( 8b ), wherein the tip of the V-shape of the rotor core ( 8th ) is directed radially outwards, wherein the radial receiving slots ( 8a ) and the V-shaped receiving slots ( 8b ) alternately in the circumferential direction of the rotor core ( 8th ) are arranged, wherein each of the radial receiving slots ( 8a ) one of the radial magnets ( 9 ), each of the first inclined receiving slots ( 81 ) one of the first inclined magnets ( 71 ) and each of the second inclined receiving slots (FIGS. 82 ) one of the second inclined magnets ( 72 ), each of the radial magnets ( 9 ) between one of the first inclined magnets ( 71 ) and one of the second inclined magnets ( 72 ) is arranged each radial magnet ( 9 ) and the circumferentially adjacent first inclined magnet ( 71 ) form either a north pole or a south pole, and each radial magnet ( 9 ) and the circumferentially adjacent second inclined magnet ( 72 ), and the result is north poles whose number is expressed by P / 2 and south poles whose number is expressed by P / 2, that is, the number of magnetic poles of the rotor is expressed by P is, whereby the rotor core ( 8th ) is formed by several core laminates ( 11 ) are arranged in layers in the axial direction, each core sheet ( 11 ) preliminary radial receiving openings, the number of which is P / 2, first provisional inclined receiving openings ( 61 ), whose number carries P / 2 be, and second provisional inclined receiving openings ( 62 ), the number of which is P / 2, wherein the preliminary radial receiving openings in the circumferential direction of the core sheet (FIG. 11 ), the radial receiving openings ( 8a ) are formed by layering the provisional radial receiving openings, the first inclined receiving openings ( 81 ) by laminating the first preliminary inclined receiving openings ( 61 ) are formed, and the second inclined receiving openings ( 82 ) by laminating the second preliminary inclined receiving openings ( 62 ), wherein the motor is characterized in that in some of the preformed radial receiving slots at least in one of the core sheets ( 11 ) around one-sided connection slots ( 11e ), each of the unilateral connection slots ( 11e ) with either the first preformed inclined receiving slot ( 61 ) or the second preformed inclined receiving slot ( 62 ) and with the other first preformed inclined receiving slot ( 61 ) or second preformed inclined receiving slot ( 62 ) is not connected, an inner bridge ( 8i ) between the unilateral connection slot ( 11e ) and the other first preformed inclined receiving slot ( 61 ) or second preformed inclined receiving slot ( 62 ), and wherein the unilateral connection slots ( 11e ) at least at some parts of each radial receiving slot ( 8a ) are arranged in the axial direction. Embedded magnet motor according to claim 22, characterized in that some of the preformed radial receiving slots are first single-sided connecting slots ( 11e ) and the remainder about second one-sided connection slots ( 11f ) in each of the core sheets ( 11 ), each first one-sided connection slot ( 11e ) with one of the first preformed inclined receiving slots ( 61 ) and every other single-sided connection slot ( 11f ) with one of the second preformed inclined connecting slots ( 62 ), and wherein each of the radial receiving slots ( 8a ) with the first single-sided connection slots ( 11e ) and the second one-sided connection slots ( 11f ) is provided. Embedded magnet motor with a rotor ( 2 ), wherein the rotor ( 2 ) a rotor core ( 8th ), radial magnets ( 9 ), whose number is expressed by P / 2, first oblique magnets ( 71 ), whose number is expressed by P / 2, and second oblique magnets ( 72 ) whose number is expressed by P / 2, wherein the rotor core ( 8th ) radial receiving slots ( 8a ), the number of which is expressed by P / 2, first inclined receiving slots (FIG. 81 ), the number of which is expressed by P / 2, and second inclined receiving slots (FIG. 82 ), the number of which is expressed by P / 2, and the radial receiving slots ( 8a ), the first inclined receiving slots ( 81 ) and the second inclined receiving slots ( 82 ) in the axial direction completely through the rotor core ( 8th ), wherein the radial receiving slots ( 8a ) substantially in a radial direction of the rotor core ( 8th ), and the first inclined receiving slots ( 81 ) and the second inclined receiving slots ( 82 ) extend linearly inclined with respect to the radial direction, each pair of a slanted receiving slot ( 81 ) and the associated second inclined receiving slot ( 82 ) a V-shaped receiving slot ( 8b ), wherein the tip of the V-shape of the rotor core ( 8th ) is directed radially outwards, wherein the radial receiving slots ( 8a ) and the V-shaped receiving slots ( 8b ) alternately in the circumferential direction of the rotor core ( 8th ) are arranged, wherein each of the radial receiving slots ( 8a ) one of the radial magnets ( 9 ), each of the first inclined receiving slots ( 81 ) one of the first inclined magnets ( 71 ) and each of the second inclined receiving slots (FIGS. 82 ) one of the second inclined magnets ( 72 ), each of the radial magnets ( 9 ) between one of the first inclined magnets ( 71 ) and one of the second inclined magnets ( 72 ), each radial magnet ( 9 ) and the circumferentially adjacent first inclined magnet ( 71 ) form either a north pole or a south pole, and each radial magnet ( 9 ) and the circumferentially adjacent second inclined magnet ( 72 ) form the other north pole or south pole, and as a result North poles whose number is expressed by P / 2 and south poles whose number is expressed by P / 2, that is, the number of magnetic poles of the rotor is expressed by P, wherein the rotor core ( 8th ) is formed by several core laminates ( 11 ) are arranged in layers in the axial direction, each core sheet ( 11 ) preliminary radial receiving openings, the number of which is P / 2, first provisional inclined receiving openings ( 61 ), the number of which is P / 2, and second provisional inclined receiving openings ( 62 ), the number of which is P / 2, wherein the preliminary radial receiving openings in the circumferential direction of the core sheet (FIG. 11 ), the radial receiving openings ( 8a ) are formed by layering the provisional radial receiving openings, the first inclined receiving openings ( 81 ) by laminating the first preliminary inclined receiving openings ( 61 ) are formed, and the second inclined receiving openings ( 82 ) by laminating the second preliminary inclined receiving openings ( 62 The motor is characterized in that in some of the preformed radial receiving slots in at least one of the core laminations (FIGS. 11 ) by projecting connection slots ( 11j ), a radially inner end of each projecting connecting slot ( 11j ) with the circumferentially adjacent first inclined receiving slot ( 81 ) and the second inclined receiving slot ( 82 ), wherein the radially inner end of the projecting connection slot ( 11j ) with a restriction extension ( 11i ) projecting radially outward, and wherein the projecting connecting slots ( 11j ) at least at some parts of each radial receiving slot ( 8a ) are arranged along the axial direction and as a result the restriction extensions ( 11i ) the radial magnets ( 9 ) to move radially inward, the constraining processes ( 11i ) the first inclined magnets ( 71 ) and the second inclined magnets ( 72 ) to move radially inwardly, thereby preventing the first inclined magnets ( 71 ) and the second inclined magnets ( 72 ) the radial magnets ( 9 ) touch. Embedded magnet motor according to claim 24, characterized in that each core sheet ( 11 ) only one such projecting connection slot ( 11j ), and wherein the radially inner ends of the preformed radial receiving slots, unlike the projecting connecting slot (FIG. 11j ), with one of the first preformed inclined receiving slots ( 61 ) and one of the second preformed inclined receiving slots ( 62 ) and spaces are provided at portions corresponding to the constraint extensions ( 11i ) correspond. Embedded magnet motor with a rotor ( 2 ), wherein the rotor ( 2 ) a rotor core ( 8th ), radial magnets ( 9 ), the number of which is expressed by P / 2, first oblique magnets ( 71 ), whose number is expressed by P / 2, and second oblique magnets ( 72 ) whose number is expressed by P / 2, wherein the rotor core ( 8th ) radial receiving slots ( 8a ), the number of which is expressed by P / 2, first inclined receiving slots (FIG. 81 ), the number of which is expressed by P / 2, and second inclined receiving slots (FIG. 82 ), the number of which is expressed by P / 2, and the radial receiving slots ( 8a ), the first inclined receiving slots ( 81 ) and the second inclined receiving slots ( 82 ) in the axial direction completely through the rotor core ( 8th ), wherein the radial receiving slots ( 8a ) substantially in a radial direction of the rotor core ( 8th ), and the first inclined receiving slots ( 81 ) and the second inclined receiving slots ( 82 ) extend linearly inclined with respect to the radial direction, each pair of a slanted receiving slot ( 81 ) and the associated second inclined receiving slot ( 82 ) a V-shaped receiving slot ( 8b ), wherein the tip of the V-shape of the rotor core ( 8th ) is directed radially outwards, wherein the radial receiving slots ( 8a ) and the V-shaped receiving slots ( 8b ) alternately in the circumferential direction of the rotor core ( 8th ) are arranged, wherein each of the radial receiving slots ( 8a ) one of the radial magnets ( 9 ), each of the first inclined receiving slots ( 81 ) one of the first inclined magnets ( 71 ) and each of the second inclined receiving slots (FIGS. 82 ) one of the second inclined magnets ( 72 ), each of the radial magnets ( 9 ) between one of the first inclined magnets ( 71 ) and one of the second inclined magnets ( 72 ), each radial magnet ( 9 ) and the circumferentially adjacent first inclined magnet ( 71 ) form either a north pole or a south pole, and each radial magnet ( 9 ) and the circumferentially adjacent second inclined magnet ( 72 ), and the result is north poles whose number is expressed by P / 2 and south poles whose number is expressed by P / 2, that is, the number of magnetic poles of the rotor is expressed by P is, whereby the rotor core ( 8th ) is formed by that several core sheets ( 11 ) are arranged in layers, wherein a direction which is perpendicular to the direction in which each radial receiving slot ( 8a ) seen from the axial direction, is referred to as the width direction, wherein a slot ( 8c ) at a radially outer end of each radial receiving slot ( 8a ), wherein a second width (W2) of the wide slots ( 8c ) is greater than a first width (W1) of the radial magnets ( 9 ), wherein the motor is characterized in that each of the radial receiving slots ( 8a ) with an extension ( 8d ), which is radially further inward than the corresponding slot ( 8c ) is formed, the width of a portion of the radial receiving slot ( 8a ), which by the extension ( 8d ) is smaller than the first width (W1) of the radial magnet ( 9 ), and as a result the extensions ( 8d ) the radial magnets ( 9 ) to move radially outward, the radial dimension of the slot ( 8c ) is referred to as the radial width dimension Y, and the thickness of each core sheet ( 11 ) is referred to as core sheet thickness T, and where Y ≦ 4T. Embedded magnet motor according to claim 26, characterized characterized in that Y = 4T. Embedded magnet motor according to claim 26 or 27, characterized in that a wide outer bridge ( 8k ) between the radially outer end of each radial receiving slot ( 8a ) and an outer peripheral surface ( 8r ) of the rotor core ( 8th ) and wherein the radial dimension of the outer bridge is referred to as outer bridge dimension AB, wherein a V-slot outer bridge ( 8w ) between the radially outer end of each V-shaped receiving slot ( 8b ) and the outer peripheral surface ( 8r ) of the rotor core ( 8th ) is provided, and it is in the radial dimension of the V-slot outer bridge ( 8w ) is also about the outer bridge dimension AB, and where AB = T. Embedded magnet motor with a rotor ( 2 ), wherein the rotor ( 2 ) a rotor core ( 8th ), radial magnets ( 9 ), whose number is expressed by P / 2, first oblique magnets ( 71 ), whose number is expressed by P / 2, and second oblique magnets ( 72 ) whose number is expressed by P / 2, wherein the rotor core ( 8th ) radial receiving slots ( 8a ), the number of which is expressed by P / 2, first inclined receiving slots (FIG. 81 ), the number of which is expressed by P / 2, and second inclined receiving slots (FIG. 82 ), the number of which is expressed by P / 2, and the radial receiving slots ( 8a ), the first inclined receiving slots ( 81 ) and the second inclined receiving slots ( 82 ) in the axial direction completely through the rotor core ( 8th ), wherein the radial receiving slots ( 8a ) substantially in a radial direction of the rotor core ( 8th ), and the first inclined receiving slots ( 81 ) and the second inclined receiving slots ( 82 ) extend linearly inclined with respect to the radial direction, each pair of a slanted receiving slot ( 81 ) and the associated second inclined receiving slot ( 82 ) a V-shaped receiving slot ( 8b ), wherein the tip of the V-shape of the rotor core ( 8th ) is directed radially outwards, wherein the radial receiving slots ( 8a ) and the V-shaped receiving slots ( 8b ) alternately in the circumferential direction of the rotor core ( 8th ) are arranged, wherein each of the radial receiving slots ( 8a ) one of the radial magnets ( 9 ), each of the first inclined receiving slots ( 81 ) one of the first inclined magnets ( 71 ) and each of the second inclined receiving slots (FIGS. 82 ) one of the second inclined magnets ( 72 ), each of the radial magnets ( 9 ) between one of the first inclined magnets ( 71 ) and one of the second inclined magnets ( 72 ), each radial magnet ( 9 ) and the circumferentially adjacent first inclined magnet ( 71 ) form either a north pole or a south pole, and each radial magnet ( 9 ) and the circumferentially adjacent second inclined magnet ( 72 ), and the result is north poles whose number is expressed by P / 2 and south poles whose number is expressed by P / 2, that is, the number of magnetic poles of the rotor is expressed by P is, whereby the rotor core ( 8th ) is formed by several core laminates ( 11 ) are arranged in layers, wherein the motor is characterized in that an outer bridge ( 8k ) between the radially outer end of each radial receiving slot ( 8a ) and an outer peripheral surface ( 8r ) of the rotor core ( 8th ) and the radial dimension of the outer bridge is referred to as outer bridge dimension AB, wherein a V-slot outer bridge ( 8w ) between the radially outer end of each V-shaped receiving slot ( 8b ) and the outer peripheral surface ( 8r ) of the rotor core ( 8th ) is provided and it is in the radial dimension of the V-slot outer bridge ( 8w ) is also AB, wherein a direction which is perpendicular to the direction in which each radial receiving slot ( 8a ) out As seen in the axial direction, is referred to as the width direction, wherein an intermediate oblique slot bridge ( 8m ) between the radially outer end of each first inclined receiving slot ( 81 ) and the radially outer end of the associated second inclined receiving slot ( 82 ) is provided and the width of the intermediate oblique slot bridge ( 8m ) is referred to as the intermediate slant bridge dimension BB, and where BB> AB. Embedded magnet motor with a rotor ( 2 ), wherein the rotor ( 2 ) a rotor core ( 8th ), radial magnets ( 9 ), whose number is expressed by P / 2, first oblique magnets ( 71 ), whose number is expressed by P / 2, and second oblique magnets ( 72 ) whose number is expressed by P / 2, wherein the rotor core ( 8th ) radial receiving slots ( 8a ), the number of which is expressed by P / 2, first inclined receiving slots (FIG. 81 ), the number of which is expressed by P / 2, and second inclined receiving slots (FIG. 82 ), the number of which is expressed by P / 2, and the radial receiving slots ( 8a ), the first inclined receiving slots ( 81 ) and the second inclined receiving slots ( 82 ) in the axial direction completely through the rotor core ( 8th ), wherein the radial receiving slots ( 8a ) substantially in a radial direction of the rotor core ( 8th ), and the first inclined receiving slots ( 81 ) and the second inclined receiving slots ( 82 ) extend linearly inclined with respect to the radial direction, each pair of a slanted receiving slot ( 81 ) and the associated second inclined receiving slot ( 82 ) a V-shaped receiving slot ( 8b ), wherein the tip of the V-shape of the rotor core ( 8th ) is directed radially outwards, wherein the radial receiving slots ( 8a ) and the V-shaped receiving slots ( 8b ) alternately in the circumferential direction of the rotor core ( 8th ) are arranged, wherein each of the radial receiving slots ( 8a ) one of the radial magnets ( 9 ), each of the first inclined receiving slots ( 81 ) one of the first inclined magnets ( 71 ) and each of the second inclined receiving slots (FIGS. 82 ) one of the second inclined magnets ( 72 ), each of the radial magnets ( 9 ) between one of the first inclined magnets ( 71 ) and one of the second inclined magnets ( 72 ), each radial magnet ( 9 ) and the circumferentially adjacent first inclined magnet ( 71 ) form either a north pole or a south pole, and each radial magnet ( 9 ) and the circumferentially adjacent second inclined magnet ( 72 ), and the result is north poles whose number is expressed by P / 2 and south poles whose number is expressed by P / 2, that is, the number of magnetic poles of the rotor is expressed by P is, whereby the rotor core ( 8th ) is formed by several core laminates ( 11 ) are arranged in layers, wherein a direction which is perpendicular to the direction in which each radial receiving slot ( 8a ) seen from the axial direction, is referred to as the width direction, wherein the motor is characterized in that an inner bridge ( 8i ) between the radially inner end of each radial receiving slot ( 8a ) and the radially inner end of the associated first inclined receiving slot ( 81 ), and another inner bridge ( 8i ) between the radially inner end of each radial receiving slot ( 8a ) and the radially inner end of the associated second inclined receiving slot ( 82 ), and wherein the width of the inner bridges ( 8i ) is referred to as inner bridge dimension CB, wherein an intermediate oblique slot bridge ( 8m ) between the radially outer end of each first inclined receiving slot ( 81 ) and the radially outer end of the associated second inclined receiving slot ( 82 ) is provided and the width of the intermediate oblique slot bridge ( 8m ) is referred to as the intermediate slant bridge dimension BB, and where BB> CB. Embedded magnet motor with a rotor ( 2 ), wherein the rotor ( 2 ) a rotor core ( 8th ), radial magnets ( 9 ), whose number is expressed by P / 2, first oblique magnets ( 71 ), whose number is expressed by P / 2, and second oblique magnets ( 72 ) whose number is expressed by P / 2, wherein the rotor core ( 8th ) radial receiving slots ( 8a ), the number of which is expressed by P / 2, first inclined receiving slots (FIG. 81 ), the number of which is expressed by P / 2, and second inclined receiving slots (FIG. 82 ), the number of which is expressed by P / 2, and the radial receiving slots ( 8a ), the first inclined receiving slots ( 81 ) and the second inclined receiving slots ( 82 ) in the axial direction completely through the rotor core ( 8th ), wherein the radial receiving slots ( 8a ) substantially in a radial direction of the rotor core ( 8th ), and the first inclined receiving slots ( 81 ) and the second inclined receiving slots ( 82 ) extend linearly inclined with respect to the radial direction, each pair consisting of a slanted receiving slot ( 81 ) and the associated second inclined receiving slot ( 82 ) a V-shaped receiving slot ( 8b ), wherein the tip of the V-shape of the rotor core ( 8th ) is directed radially outwards, wherein the radial receiving slots ( 8a ) and the V-shaped receiving slots ( 8b ) alternately in the circumferential direction of the rotor core ( 8th ) are arranged, wherein each of the radial receiving slots ( 8a ) one of the radial magnets ( 9 ), each of the first inclined receiving slots ( 81 ) one of the first inclined magnets ( 71 ) and each of the second inclined receiving slots (FIGS. 82 ) one of the second inclined magnets ( 72 ), each of the radial magnets ( 9 ) between one of the first inclined magnets ( 71 ) and one of the second inclined magnets ( 72 ), each radial magnet ( 9 ) and the circumferentially adjacent first inclined magnet ( 71 ) form either a north pole or a south pole, and each radial magnet ( 9 ) and the circumferentially adjacent second inclined magnet ( 72 ), and the result is north poles whose number is expressed by P / 2 and south poles whose number is expressed by P / 2, that is, the number of magnetic poles of the rotor is expressed by P is, wherein a direction which is perpendicular to the direction in which each radial receiving slot ( 8a ) is viewed from the axial direction, referred to as the width direction, wherein the motor is characterized in that the embedded magnetic motor is a magnetic sensor ( 51 ), and the magnetic sensor ( 51 ) detects a rotation of the rotor by detecting an axial magnetic flux leakage from the rotor, and wherein the magnetic sensor ( 51 ) is arranged in a radially outer region (H) to an axial end face ( 2a ) of the rotor, the magnetic sensor ( 51 ) in the radially outer region (H) detects the magnetic flux, and positive and negative poles of the magnetic flux are reversed only once in a cycle of magnetic flux change during a period when the rotor ( 2 ) is rotated, and the magnetic sensor ( 51 ) between the first inclined magnet ( 71 ) and the second inclined magnet ( 72 ) goes through. Embedded magnet motor according to claim 31, characterized in that the rotor core ( 8th ) is formed by several core laminates ( 11 ) are arranged in layers in the axial direction, each core sheet ( 11 ) a mounting slot ( 18 ), which extends over the axial direction, and the core sheets ( 11 ) are fastened by a fastening part which passes through the fastening slot ( 18 ), and wherein the mounting slot ( 18 ) and the fastening part ( 19 ) are radially inwardly directed from and adjacent to the radially outer region (H). Embedded magnet motor according to claim 31, characterized in that the radially outer region (H) a region of high magnetic flux density or a magnetic saturation region of the rotor ( 2 ) between one of the first inclined magnets ( 71 ) and the associated second inclined magnet ( 72 ) is when no electrical power is supplied to the embedded magnet motor. Embedded magnet motor according to claim 31, characterized in that the surface of each first inclined magnet ( 71 ) and the associated second inclined magnet ( 72 ), which face each other, as inclined magnetic surfaces ( 71a . 72a ), and the center of each inclined magnetic surface ( 71a . 72a ) is referred to as a center (MX), and wherein the radially outer region (H) is arranged radially further outward than the centers (MX). Manufacturing method for an embedded magnetic motor, wherein the embedded magnetic motor comprises a rotor ( 2 ), wherein the rotor ( 2 ) a rotor core ( 8th ), radial magnets ( 9 ), whose number is expressed by P / 2, first oblique magnets ( 71 ), whose number is expressed by P / 2, and second oblique magnets ( 72 ) whose number is expressed by P / 2, wherein the rotor core ( 8th ) radial receiving slots ( 8a ), the number of which is expressed by P / 2, first inclined receiving slots (FIG. 81 ), the number of which is expressed by P / 2, and second inclined receiving slots (FIG. 82 ), the number of which is expressed by P / 2, and the radial receiving slots ( 8a ), the first inclined receiving slots ( 81 ) and the second inclined receiving slots ( 82 ) in the axial direction completely through the rotor core ( 8th ), wherein the radial receiving slots ( 8a ) substantially in a radial direction of the rotor core ( 8th ), and the first inclined receiving slots ( 81 ) and the second inclined receiving slots ( 82 ) extend linearly inclined with respect to the radial direction, each pair of a slanted receiving slot ( 81 ) and the associated second inclined receiving slot ( 82 ) a V-shaped receiving slot ( 8b ), wherein the tip of the V-shape of the rotor core ( 8th ) is directed radially outwards, wherein the radial receiving slots ( 8a ) and the V-shaped receiving slots ( 8b ) selnd in the circumferential direction of the rotor core ( 8th ) are arranged, wherein each of the radial receiving slots ( 8a ) one of the radial magnets ( 9 ), each of the first inclined receiving slots ( 81 ) one of the first inclined magnets ( 71 ) and each of the second inclined receiving slots (FIGS. 82 ) one of the second inclined magnets ( 72 ), each of the radial magnets ( 9 ) between one of the first inclined magnets ( 71 ) and one of the second inclined magnets ( 72 ), each radial magnet ( 9 ) and the circumferentially adjacent first inclined magnet ( 71 ) form either a north pole or a south pole, and each radial magnet ( 9 ) and the circumferentially adjacent second inclined magnet ( 72 ), and the result is north poles whose number is expressed by P / 2 and south poles whose number is expressed by P / 2, that is, the number of magnetic poles of the rotor is expressed by P wherein the embedded magnetic motor is a magnetic sensor ( 51 ), and the magnetic sensor ( 51 ) detects a rotation of the rotor by detecting an axial magnetic flux leakage from the rotor, and wherein the magnetic sensor ( 51 ) is arranged in a radially outer region (H) to an axial end face ( 2a ) of the rotor, the magnetic sensor ( 51 ) is detected in the radially outer region (H), the magnetic flux, and positive and negative poles of the magnetic flux are reversed only once in a cycle of magnetic flux change during a period when the rotor ( 2 ) is rotated, and the magnetic sensor ( 51 ) between the first inclined magnet ( 71 ) and the second inclined magnet ( 72 ), the method being characterized by: a step of arranging the magnetic sensor ( 51 ) to the axial end surface ( 2a ) to face the rotor, wherein the magnetic sensor ( 51 ) a rotation of the rotor ( 2 ) detected by detecting an axial magnetic flux leakage from the rotor; a measuring step (S1) for measuring magnetic characteristics generated by the magnetic sensor ( 51 ) are detected at each radial position when the radial position of the magnetic sensor ( 51 ) changed; and a positioning step (S2) for determining the radially outer region (H) based on the measuring step (S1) and for positioning the magnetic sensor ( 51 ) in the radially outer region (H), wherein the magnetic sensor ( 51 ) in the radially outer region (H) detects the magnetic flux, and positive and negative poles of the magnetic flux are reversed only once in a cycle of magnetic flux change during a period in which the rotor ( 2 ) is rotated and the magnetic sensor ( 51 ) between one of the first inclined magnets ( 71 ) and the associated second inclined magnet ( 72 ) goes through.