JPH11318047A - Armature structure of toroidal winding type rotary electric machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To drastically improve an efficiency value and characteristics by forming the thickness of an entire lamination layer of a counter core part and a partial lamination core thicker than an annular core part. SOLUTION: A total lamination thickness in an axial direction of a partial lamination core 13 and a counter core part 9 is formed to be thicker than the thickness of an annular core part 5, and the total layer thickness of the counter core part 9 and the partial lamination core 13 is formed to be larger than a winding height in the axial direction of a coil 8. Also, thickness in the axial direction of the opposing surface of a rotor is thicker than that of the annular core part 5 and is formed to be nearly identical to the total layer thickness, and the partial lamination core 13 is allowed to oppose the rotor side. Then, a projecting core part 25 that projects outward in the direction of a radius from the annular core part 5 is formed at the lamination core, and the projecting core part 25 is brought into contact with a stator frame 1, thus fixing the entire stator, thus drastically improving a proportional constant value for determining the relationship between torque and copper loss and drastically improving the efficiency value and characteristics of a rotary electric machine.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an armature structure of a toroidal winding type rotating electric machine in which a plurality of coils are mounted on an annular core portion of a laminated core at predetermined intervals.

[0002]

2. Description of the Related Art In general, a rotating electric machine requiring a sine waveform magnetic field in an air gap portion employs a winding method called distributed winding. For example, in the three-phase induction motor shown in FIG. 19, a stator S is arranged so as to surround an outer peripheral side of a rotor R, and a slot is provided with respect to a laminated core SC of an armature constituting the stator S. The coils are wound such that the coils SL are superimposed while displacing the coils. However, in this method, the coil SL
, The windings are difficult, the winding length is long, and the winding height H1 is high.

[0003] On the other hand, a method called toroidal winding in which winding is performed on a core annular portion is known. This toroidal winding method has excellent features such as easy winding because the coils do not overlap, shortening the winding length, and preventing the winding height from increasing.

[0004]

However, in the conventional toroidal winding type rotating electric machine, the characteristics are inferior to those of the general distributed winding except for the flat type, and the application is limited to some fields. Is the current situation. On the other hand, in recent years, global environmental problems have become serious, and energy saving and power saving must be promoted with the highest priority. Today, power consumption is dominant, but more than half of the total power is consumed by motors. For this reason, increasing the efficiency of the motor and reducing the loss (power consumption) as much as possible are demanded as top priorities. The same applies to the generator that generates electric power.

[0005] Therefore, the present invention provides an armature of a rotary electric machine in which the efficiency value is greatly improved by making a structural change for improving the characteristics of the armature structure of the toroidal-wound rotary electric machine excellent in the winding method. It is intended to provide an armature structure having a structure.

[0006]

The present invention relates to a structure for improving the characteristics of a rotating electric machine including a motor and a generator. A motor converts electric energy into mechanical energy, and converts mechanical energy into electric energy. The generator is converted into the motor, and the motor and the generator are basically the same (structure and configuration). Therefore, it is possible to use the motor as a generator or to use the generator as a motor. Therefore, all of the following description will be made using the motor.

In general, output and torque are used as indices representing motor characteristics. However, since these vary depending on the applied voltage, the number of windings of the windings, heat radiation conditions and design, the absolute values of the motor characteristics are changed. It is not an index represented by. On the other hand, there is an efficiency value as another index, which is a good index indicating the relationship between the output and the loss.
Therefore, it cannot be an absolute index indicating the magnitude of the motor characteristic.

Therefore, in order to improve the motor efficiency value, it is basically necessary to accurately grasp what the motor characteristics and the magnitude of the efficiency are and what they determine.
As a result of the study by the present inventors, the following has been found. The absolute index representing the magnitude of the motor characteristic is a proportional constant value (determining) the relationship between the generated torque and the generated loss (copper loss). For a motor without a magnet, this proportionality constant = torque / copper loss. For a motor with a magnet, this proportionality constant = (torque) ²
/ Copper loss. The so-called proportional constant value, which represents the relationship between the torque and the copper loss generated when a certain current flows, does not change even when the applied voltage, the number of winding turns (when the space factor is the same), and the load conditions are changed. Thus, it can be seen that it is an absolute index indicating the magnitude of the motor characteristics. On the other hand, regarding the efficiency value, efficiency = output / input = output / (output + loss)
Output = rotational speed × torque, the rotational speed is the applied voltage and loss, and the main loss is copper loss.

Enhance motor characteristics (increase efficiency)
For this reason, attempts have been made to increase the size of the magnet, to use a high-energy product magnet, or to increase the occupancy of the winding.However, these are ultimately achieved by changing the conditions of the factors that determine the proportional constant value. Is what you have gained.

Next, the reason why the proportional constant value determines the absolute value of the motor characteristics and the factor that determines the proportional constant value will be described. The torque of the motor is determined by the magnitude of the change in magnetic energy due to the relative movement between the opposed primary and secondary sides. There are two types of magnetic energy generated and held by the primary and secondary side self inductances L and those generated and held by the mutual inductance M between the primary side and the secondary side. The magnetic energy used for the drive differs depending on the type and structure. Induction motors, DC motors, brushless motors and the like use magnetic energy by M, and reluctance motors use magnetic energy by L.

When the structure such as the number of magnetic poles is fixed,
The magnitude of the generated torque with respect to the secondary side and secondary side currents I ₁ and I ₂ is substantially determined by the maximum value of the magnetic energy, and is determined by the so-called self-inductance L and mutual inductance M. The magnitude of the magnetic energy due to the self-inductance L is (１ ／) · L · I ² , and the magnitude of the magnetic energy due to the mutual inductance M is M ·
I ₁ · I ₂ . Most general motors other than the reluctance motor use the mutual inductance M for driving. In many motors that do not use magnets, such as induction motors and universal motors, the primary current I ₁ and the secondary current I ₂ are proportional, so if the current is represented by I, the magnetic energy is M · I ₁ · I ₂ = M · ^{I 2} and expressed. If the motor using a magnet to one side (assuming primary), the magnet is I ₁ fixed for the electromagnet current fixed, for M · I 1 ₌ [Phi (effective magnetic flux), the magnetic energy M · I ₁ · I ₂ =
It can be expressed as Φ · I.

On the other hand, since copper loss is resistance loss, R · I ²
Can be represented by Therefore, the proportionality constant that determines the relationship between torque and copper loss can be expressed as L / R or M / R as a result of torque / copper loss without a magnet. With a magnet,
(Torque) ² / copper loss, and as a result, can be expressed as M ² / R.

Considering the factors that determine L, M, and R, when the number of coil turns has the same effect on all, and is excluded, L and M are mainly the primary and secondary facing area S and the air gap length. g. If a magnet is provided, it further includes the material, physique and shape of the magnet. R is mainly determined by the coil cross-sectional area A and the coil length l per turn of the coil. Considering that the air gap length g and the magnet element are almost fixed, and considering the configuration of the above-mentioned proportional constant only with the main element, the following is obtained. a. Motor without magnet (induction, universal): SA
/ L = S / coil element b. Motorized ^{magnet: S 2 · A / l =} S 2 / coil elements c. Reluctance motor: S · A / l = S / coil element As described above, if the main factors constituting the proportional constant are improved and the proportional constant value is increased, the motor characteristics are increased, and as a result, the efficiency value can be improved. I understand.

[0014] From the viewpoint of the above proportional constant value, it can be seen that the conventional rotary electric machine has a major drawback. In other words, a common matter that determines the upper side of the above-described constitutive equation of the proportional constant is the area S of the primary and secondary magnetic facing surfaces. As the facing area S increases, the proportional constant value and the efficiency value may increase. Recognize. However, as will be readily understood by taking the three-phase induction motor (see FIG. 19), which is a typical rotating electric machine, as an example, the primary and secondary magnetic facing part height H3 with respect to the overall motor height H2 in the axial direction. Is extremely small. This corresponds to the winding height H, as described above.
This is because a lot of the axial space is taken in 1
As a result, the above-described area S of the magnetic facing portion is very small.

Assuming that the magnetic facing surface can be taken up to the full motor space in the axial direction without changing the condition of the coil element, the proportional constant value is greatly improved, and the loss at the same torque (or output) is reduced. Is easily reduced to, for example, 1/2 or 1/3. Such a temporary state is possible to some extent if only the structure for that is considered. That is, it is structurally possible to greatly increase the height of the primary and secondary magnetic facing surfaces without significantly deteriorating the coil element, and by adopting such a structure, the efficiency value is greatly increased. That is, the loss can be significantly reduced.

From such a viewpoint, in the invention according to the first aspect, the armature constituting at least one member of the stator or the rotor includes an annular core portion and a portion extending from the annular core portion to the other member. An opposing core portion extending in the armature structure of a toroidal winding type rotating electric machine in which a coil is toroidally wound around an annular core portion of the laminated core, wherein at least the opposing core of the armature is provided. In the portion, a partially laminated core that enlarges the facing area with the other side member is provided so as to be stacked, and the total laminated thickness of the facing core portion and the partially laminated core is formed thicker than the annular core portion. .

According to the second aspect of the present invention, the partially laminated cores are laminated in a shape extending continuously from the opposed core portion to at least the annular core portion.

Further, according to the third aspect of the present invention, the laminated core and the partially laminated core are made of a silicon steel plate.

Furthermore, in the invention according to claim 4, the silicon steel sheets of the laminated core and the partially laminated core are laminated on both surfaces in the thickness direction without interposing an insulating coating.

On the other hand, in the fifth aspect of the present invention, the partially laminated core is formed with an insulating slit extending in a direction along the flow of the magnetic flux.

According to the sixth aspect of the present invention, the partially laminated core and the laminated core are formed with a projecting portion projecting from the annular core portion in the radial direction opposite to the opposing core portion.

Further, in the invention according to claim 7, the overhang portion is in contact with the support frame so as to position the armature.

Further, in the invention according to claim 8, the area of the portion of the overhanging portion that comes into contact with the support frame is smaller than the cross-sectional area of the other portion of the overhanging portion.

Further, in the ninth aspect, the laminated core and the partially laminated core are fixed by laminated caulking.

According to the tenth aspect of the present invention, the total laminated thickness of the opposing core portion and the partially laminated core portion is formed so as to have a height equal to or greater than the winding height of the coil.

In the eleventh aspect of the present invention, the total width of the opposing surface of the opposing core portion and the other member in the circumferential direction of the opposing surface is 0.
It is formed so as to have a ratio of 8 or more.

In the twelfth aspect of the present invention, the partially laminated core laminated on the facing core portion is provided with a radial facing surface and an axial facing surface facing the other member in the radial and axial directions. ing.

Furthermore, in the invention according to claim 13,
The axially opposed surface on the extreme end of the partially laminated core is enlarged in the circumferential direction or the radial direction so as to increase the opposed area.

According to the fourteenth aspect of the present invention, the axially opposed surface on the endmost side of the partially laminated core projects so as to face the other member in the axial direction.

Further, in the invention according to claim 15, the armature is provided at both axial ends thereof with opposing surfaces in the axial direction with the other member.

Further, in the invention according to claim 16, the armature is a stator of an induction machine.

Further, according to the seventeenth aspect of the present invention,
The armature is the rotor of the induction machine.

According to the eighteenth aspect of the present invention, a cylindrical ring-shaped copper material is provided on a portion of the annular core portion on the side opposite to the opposed core portion in the radial direction, and is made a part of the conductive portion.

According to the nineteenth aspect, the periphery of the conductive portion and the annular core portion is filled with an aluminum material forming the conductive portion by die casting.

Further, in the twentieth aspect of the present invention, a rod-shaped copper material is inserted into the slot portion of the armature to form a part of the conductive portion.

Further, in the invention according to claim 21,
All of the conductive portions of the armature are made of copper.

In the invention according to claim 22, the armature is A
It is a stator of a C magnet synchronous machine or an AC reluctance synchronous machine.

In the invention according to claim 23, the rotating electric machine has an inner rotor structure.

Further, in the invention according to claim 24, the rotating electric machine has an outer rotor structure.

Further, in the invention according to claim 25,
The winding is applied such that one phase coil is accommodated in one slot for one pole.

According to the twenty-sixth aspect, the other rotor constituting the other member is configured as a field magnet type or a reluctance type.

In the twenty-seventh aspect of the present invention, the partially laminated core is stacked on a core portion other than the winding portion of the laminated core in which the coil is toroidally wound on the annular core portion, and the uppermost end face of the partially laminated core is on the other side. It is a surface-facing type magnetic facing surface that faces the other-side member constituting the member in the axial direction.

By using the toroidal winding and the partially laminated core in combination as in the present invention, the space in the height direction, which is a drawback of the conventional structure, can be maximized and the coil element does not deteriorate. Therefore, the value of the proportional constant is greatly improved, and as a result, the loss is greatly reduced, and the efficiency value is dramatically improved.

More specifically, the following operation is obtained. First, by adopting the toroidal winding structure, the slit width of the facing surface of the slot, which was widely required for the winding, may be reduced, and the facing area can be improved while reducing the higher-order torque. Further, the space factor, which has been difficult even if the winding method is conventionally improved, can be easily improved. Further, since there is no overlapping portion of the windings, it is easy to cope with a design in which the cross-sectional area of the windings is increased.
The coil length per turn is also reduced.

Next, the structure in which the partially laminated cores are provided enables the space in the height direction of the motor to be used as a magnetic facing surface as much as possible. In spite of that, there is almost no influence on the winding and the coil element is not deteriorated. Conversely, the disadvantages of the conventional toroidal winding structure, such as increasing the core thickness, the coil length per turn becomes longer, and the width of the core ribs, which reduces the winding space, The direction can be improved by combining with the laminated core structure. As another method of effectively utilizing the space in the height direction of the motor as a magnetic facing surface, there is a so-called magnetic flux collecting yoke structure or a magnetic powder yoke structure. The structure is better. For example,
The magnetic-collecting yoke structure has problems such as not being able to make full use of the space due to the problem of magnetic saturation, being difficult to form the shape and being difficult to obtain accuracy, and having a large die cost. Also, the magnetic powder yoke structure has drawbacks such as magnetic characteristics and mold cost.

Further, since the core lamination height of the core rib portion is increased, the same magnetic path cross-sectional area can be secured even if the rib width is reduced, and as a result, the winding space can be increased. In addition, by extending the partially laminated core in the radial direction and extending it, the flow of magnetic flux in the laminated (axial) direction becomes smoother, the fixing strength of the partially laminated core is increased, and fixing and positioning to the outer frame are also improved. It will be easier.

[0047]

Embodiments of the present invention will be described below in detail with reference to the drawings. First, in the embodiment shown in FIGS. 1 to 5, the present invention is applied to a stator (stator) and a rotor (rotor) in an induction motor. Is arranged so as to surround the outer peripheral side of the rotor 4 fixed to the rotating shaft 3. A plurality of rib-shaped core portions 6 are integrally provided on the annular core portion 5 of the laminated core forming the stator 2 so as to extend radially at predetermined intervals in the circumferential direction. A coil 8 is attached to the annular core portion 5 by so-called toroidal winding inside each of the slots 7 defined between a pair of circumferentially adjacent ones of the rib-shaped core portions 6. ing. A rotor 4 is provided at the inner end of each of the rib-shaped core portions 6.
Is provided.

The laminated core is formed by laminating core pieces obtained by punching a silicon steel sheet into a predetermined shape in the axial direction, and is formed into a laminated body of all core pieces 11 as shown in FIG. On the other hand, the partial core piece 1 as shown in FIG.
2 are further laminated. That is, all the core pieces 1
The laminated body 1 constitutes an axially central portion of the laminated core, and includes a portion 11a forming the above-described annular core portion 5 and a rib-shaped core portion radially extending from the annular core portion 5. 6 and the rib-shaped core portion 6
And a portion 11c forming an opposing core portion (magnetic pole portion) 9 provided at the inner end portion of FIG.
A predetermined number of all the core pieces 11 having a shape as shown in FIG. 1A are stacked in the axial direction, so that the annular core portion 5, the rib-shaped core portion 6, and the opposing core portion (magnetic poles) having a predetermined height are formed. 9) are formed. The coil 8 is toroidally wound around the annular core portion 5 in which all the core pieces 11 are stacked.

On the other hand, the partial core piece 12 shown in FIG. 6B is composed of a rib-shaped core portion 6 excluding the annular core portion 5 and a portion forming the opposed core portion (magnetic pole portion) 9. In addition, the partially laminated core 13 is formed by further laminating the rib-shaped core portion 6 and the opposing core portion (magnetic pole portion) 9 in the above-described laminated body of all the core pieces 11 from both sides in the axial direction. The partial core pieces 12 constituting the partial laminated core 13 are overlapped so as to further stack the rib-shaped core portion 6 and the opposing core portion 9 of the above-described all core pieces 11. The partially laminated core 13 is fixed by a laminated caulking 14.

The partially laminated core 13 enlarges the area facing the rotor 4 in the axial direction, and the entire area in the axial direction (lamination direction) of the partially laminated core 13 and the opposed core portion 9 is combined. The lamination thickness is formed larger than the thickness of the annular core portion 5. The total laminated thickness of the opposing core portion 9 and the partially laminated core 13 is formed to have a height greater than the winding height of the coil 8 in the axial direction.

On the other hand, as will be described later, the thickness of the facing surface of the rotor 4 in the axial direction (lamination direction) is also larger than the thickness of the annular core portion 5 and is substantially the same as the total lamination thickness. Thereby, the partially laminated core 13 is configured to face the rotor 4 side.

The laminated core forming the rotor 4 is also:
It has the same configuration as the laminated core in the stator 2 described above, and particularly, as shown in FIG.
A plurality of rib-shaped core portions 16 are integrally provided in the annular core portion 15 so as to extend radially at predetermined intervals in the circumferential direction.
Each of the slots defined between a pair of circumferentially adjacent ones of 6 is filled with a conductive portion (not shown) formed by aluminum die casting. Further, an opposing core portion 17 facing the stator 2 described above is provided at a radially outer end portion of each of the rib-shaped core portions 16.

Further, a cylindrical ring-shaped copper plate 18 is provided on the inner peripheral side of the aluminum die cast in the conductive portion, that is, on the end opposite to the opposing core portion 17 so as to form the conductive portion. Thereby, good conductivity is obtained. Further, in order to increase the conductivity of the conductive portion, a rod-shaped copper material can be inserted into each slot, or the entire conductive portion can be made of a copper material.

The laminated core is formed by laminating core pieces obtained by punching a silicon steel sheet into a predetermined shape in the axial direction. The laminated core is composed of a laminated body of all the core pieces 11 having a shape substantially corresponding to FIG. Further, partial core pieces 12 having a shape substantially corresponding to FIG. 6B are further laminated. That is, the laminated body of all the core pieces 11 constitutes a central portion in the axial direction of the laminated core, and a portion forming the above-mentioned annular core portion 15 and a radial portion from the annular core portion 15 are formed. Forming a rib-shaped core portion 16 extending to
And a portion forming an opposing core portion (magnetic pole portion) 17 provided at an inner end portion of the base member. A predetermined number of all the core pieces 11 having such a shape are laminated in the axial direction. Thereby, an annular core part 15, a rib-shaped core part 16, and a facing core part (magnetic pole part) 17 having a predetermined height are formed.

On the other hand, the partial core piece 12 is
Core part 16 and opposed core part (magnetic pole part) 1 excluding
7 are further laminated from both sides in the axial direction with respect to the rib-shaped core portion 16 and the opposing core portion (magnetic pole portion) 17 in the above-described laminated body of all the core pieces 11, and the laminated caulking is performed. 14 fixed. The partial core pieces 12 are overlapped so that the rib-shaped core portions 6 and the opposing core portions 9 of the above-described entire core pieces 11 are further stacked. A core 21 is formed.

As described above, the partially laminated core 21 increases the area facing the stator 2 in the axial direction. The partially laminated core 21 is combined with the partially laminated core 21 and the facing core portion 17 in the axial direction ( The total lamination thickness in the lamination direction) is formed larger than the thickness of the annular core portion 15. Further, the total laminated thickness of the opposed core portion 17 and the partially laminated core 21 is formed so as to have a height approximately equal to the axial height of the conductive portion.

Also, if necessary, the partial core pieces 12 constituting the partially laminated cores 13 and 21 in the stator 2 and the rotor 4 may be laminated by using a silicon steel sheet having no insulating film. The flow of magnetic flux in the direction (axial direction) is improved.

The partial core pieces 12 constituting the partial laminated cores 13 and 21 are formed with a plurality of insulating slits 22 as shown in FIG. . The insulating slit 22 has an insulating function of suppressing generation of eddy current generated by magnetic flux passing through the partially laminated cores 13 and 21 in the laminating direction (axial direction). When the entire laminated core including the partially laminated cores 13 and 21 is to be constituted by core pieces having the same shape,
As shown in FIG. 9, insulating slits 22 and 23 are not provided at a portion corresponding to the annular core portion so as not to obstruct the flow of magnetic flux in the annular direction.

Returning to FIGS. 1 to 5 again, the laminated core of the above-described stator 2 is formed with an overhanging core portion 25 projecting radially outward from the annular core portion 5. The whole stator is fixed by bringing the core portion 25 into contact with the stator frame 1.

At this time, when the stator frame 1 is made of a magnetic material such as an iron material, as shown in FIG. If it is formed so as to be reduced in the portion, leakage of magnetic flux is reduced.

Further, in the surface of the stator 2 and the rotor 4 facing the other core member in the facing core portions 9 and 17, the total width in the circumferential direction of the facing surface is the total circumferential length. Is formed so as to have a ratio of 0.8 or more, thereby increasing the mutual facing area.

Although the embodiments of the present invention made by the inventor have been specifically described above, the present invention is not limited to the above-described embodiments, and can be variously modified without departing from the gist thereof. Needless to say.

For example, in the embodiment shown in FIGS. 11 and 12, the partially laminated core 32 laminated on the opposed core portion of the stator 31 has a radially opposed radially facing rotor 33. In addition to the surface, an axial facing surface 32a facing in the axial direction is provided, and the facing area is enlarged by each of these facing surfaces. At this time, the axially facing surface 32a of the partially laminated core 32 is
The opposed area is enlarged by being enlarged in the circumferential direction or the radial direction, and a pair of axially opposed surfaces 32 a of the partial laminated core 32 are provided so as to sandwich the rotor 33 in the axial direction.

Further, the embodiment shown in FIG.
An axial facing surface 34a is provided on the rotor 34 side.

FIG. 14 shows the case where the present invention is applied to an armature of an AC synchronous machine. An armature 35 is provided to face a field magnet 36 in a radial direction.

Further, in the embodiment shown in FIG. 15, the present invention is applied to an armature of an AC reluctance synchronous machine, in which an armature 37 is opposed to an iron core 38 in a radial direction. It is provided as follows.

Furthermore, in each of the embodiments described above, the inner rotor type is used, but the outer rotor type may be used.

In the rotating electric machine according to the embodiment shown in FIG. 16, the armature 40 has three-phase U, V, and W-phase coils 41 housed in one slot one by one in order. Although each phase coil is formed so as to generate a rectangular magnetic field having the same period as the magnetic pole pitch, the present invention can be similarly applied to such a configuration.

On the other hand, in the embodiment shown in FIGS. 17 and 18, the present invention is applied to a so-called face-to-face rotating electric machine, and the uppermost end core portion 43 of the partially laminated core is on the other side. It is configured to face the member in the axial direction.

The present invention can be applied not only to the motor as in the above-described embodiments but also to a generator.

[0071]

As described above, according to the present invention, by using the toroidal winding and the partially laminated core in combination, the space in the height direction, which is a drawback of the conventional structure, can be maximized, Because the coil element does not deteriorate, the proportional constant value that determines the relationship between torque and copper loss is greatly improved, and the loss is greatly reduced, dramatically improving the efficiency and characteristics of the rotating electric machine. Can be done.

[Brief description of the drawings]

FIG. 1 is a schematic semi-longitudinal sectional view showing the structure of a toroidal wound induction motor according to an embodiment of the present invention.

FIG. 2 is a schematic cross-sectional view of the toroidal winding type induction motor shown in FIG.

FIG. 3 is an external perspective explanatory view showing a structure of a stator in FIGS. 1 and 2;

4 is an external perspective explanatory view showing a structure of a laminated core of the stator shown in FIG. 3;

5 is an explanatory plan view showing a structure of a laminated core of the stator shown in FIG. 3;

FIG. 6 is an explanatory plan view showing the shape of a core piece constituting the laminated core shown in FIGS. 4 and 5;

FIG. 7 is an external perspective perspective view schematically showing the structure of a rotor used in the toroidal winding type induction motor shown in FIG. 1;

FIG. 8 is an explanatory plan view showing the shape of an insulating slit formed in a core piece.

FIG. 9 is an explanatory plan view showing another shape of an insulating slit formed in a core piece.

FIG. 10 is an explanatory plan view showing an example of a stator fixing structure.

FIG. 11 is a schematic longitudinal sectional view showing another embodiment of the laminated core of the present invention.

FIG. 12 is an explanatory plan view of the laminated core shown in FIG. 11;

FIG. 13 is a schematic vertical sectional view showing still another embodiment of the laminated core of the present invention.

FIG. 14 is a schematic longitudinal sectional view illustrating an embodiment in which the invention is applied to a magnet synchronous machine.

FIG. 15 is a schematic longitudinal sectional view illustrating an embodiment in which the invention is applied to a reluctance type rotating electric machine.

FIG. 16 is a schematic plan view showing an embodiment in which a coil according to the present invention is concentratedly wound.

FIG. 17 is a schematic longitudinal sectional view illustrating an embodiment in which the invention is applied to a surface-facing rotary electric machine.

18 is an explanatory plan view of the face-to-face rotating electric machine shown in FIG. 17;

FIG. 19 is an explanatory longitudinal sectional view showing a structural example of a general rotating electric machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Stator frame 2 Stator 3 Rotating shaft 4 Rotor 5 Annular core part 6 Rib-shaped core part 7 Slot 8 Coil 9 Opposing core part 11, 12 Laminated core silicon steel plate 13 Partially laminated core 15 Annular core part 16 Rib-shaped core part 17 Opposing core part 18 Copper plate 21 Partially laminated core 25 Overhang core part 31 Stator 32 Partially laminated core 36 Field magnet 38 Iron core 43 Opposing core part

Claims (27)

[Claims] An armature constituting at least one member of a stator or a rotor includes an annular core portion and an opposing core portion extending from the annular core portion toward the other member. In the armature structure of a toroidal winding type rotating electric machine in which a coil is toroidally wound around an annular core part of the laminated core, at least a facing core part of the armature has an area facing the other side member. An enlarged partially laminated core is provided so as to be stacked, and the total laminated thickness of the opposing core portion and the partially laminated core is formed thicker than the annular core portion. Child structure. 2. The armature structure of a toroidal wound rotary electric machine according to claim 1, wherein the partially laminated cores are laminated so as to extend continuously from an opposing core portion to at least an annular core portion. . 3. The armature structure of a toroidal wound rotary electric machine according to claim 2, wherein said laminated core and said partially laminated core are made of silicon steel plates. 4. The armature for a toroidal wound rotary electric machine according to claim 3, wherein the silicon steel sheets of the laminated core and the partially laminated core are laminated on both sides in the thickness direction without interposing an insulating coating. Construction. 5. The armature structure for a toroidally wound rotary electric machine according to claim 3, wherein an insulating slit extending in a direction along a flow of magnetic flux is formed in the partially laminated core. 6. The toroidal winding type according to claim 2, wherein the partially laminated core and the laminated core are formed with a protruding portion projecting from the annular core portion in a radial direction opposite to the opposing core portion. Armature structure of rotating electric machine. 7. The armature structure for a toroidal-wound rotary electric machine according to claim 6, wherein the overhang portion is in contact with a support frame so as to position the armature. 8. The toroidal wound rotary electric machine according to claim 7, wherein an area of a portion of the overhanging portion that contacts the support frame is smaller than a cross-sectional area of another portion of the overhanging portion. Armature structure. 9. An armature structure for a toroidal wound rotary electric machine according to claim 2, wherein said laminated core and said partially laminated core are fixed by laminated caulking. 10. The apparatus according to claim 2, wherein the total laminated thickness of the opposed core portion and the partially laminated core portion is formed to have a height equal to or greater than the winding height of the coil. An armature structure of the toroidal-wound rotary electric machine described. 11. The opposing surface of the opposing core portion facing the other member is formed such that the total width of the opposing surface in the circumferential direction is 0.8 or more of the total circumferential length. The armature structure of a toroidal-wound rotary electric machine according to claim 2, wherein: 12. The partial laminated core laminated on the opposed core portion is provided with a radial facing surface and an axial facing surface facing the other member in a radial direction and an axial direction. An armature structure for a toroidal wound rotary electric machine according to claim 2. 13. The toroidal winding type rotation according to claim 12, wherein an axially opposed surface on the endmost side of the partially laminated core is enlarged in a circumferential direction or a radial direction so as to increase an opposed area. The armature structure of the electric machine. 14. The axially opposed surface on the endmost side of the partially laminated core is extended so as to face the other side member in the axial direction.
3. The armature structure of the toroidal winding rotary electric machine according to 2. 15. The armature structure of a toroidal-wound rotary electric machine according to claim 12, wherein axially opposite surfaces of the armature are provided at both ends in the axial direction. 16. The armature structure for a toroidally wound rotary electric machine according to claim 2, wherein said armature is a stator of an induction machine. 17. The armature structure of a toroidal wound rotary electric machine according to claim 2, wherein the armature is a rotor of an induction machine. 18. The toroidal winding according to claim 17, wherein a cylindrical ring-shaped copper material is provided on a portion of the annular core portion on a side radially opposite to the opposing core portion and is a part of a conductive portion. Armature structure of rotary electric machine. 19. The armature for a toroidal wound rotary electric machine according to claim 18, wherein an aluminum material forming the conductive portion is filled by die casting around the conductive portion and the annular core portion. Construction. 20. The armature structure for a toroidally wound rotary electric machine according to claim 18, wherein a rod-shaped copper material is inserted into a slot portion of said armature to form a part of a conductive portion. 21. The armature structure of a toroidally wound rotary electric machine according to claim 18, wherein all of the conductive portions of the armature are made of a copper material. 22. The armature structure of a toroidal wound rotary electric machine according to claim 2, wherein said armature is a stator of an AC magnet synchronous machine or an AC reluctance synchronous machine. 23. The armature structure of a toroidally wound rotary electric machine according to claim 2, wherein the rotary electric machine has an inner rotor structure. 24. The armature structure of a toroidally wound rotary electric machine according to claim 2, wherein the rotary electric machine has an outer rotor structure. 25. The toroidal rotary electric machine according to claim 2, wherein a winding is applied so that a coil of one phase is accommodated in one slot for one pole. Armature structure. 26. The armature structure of a toroidal-wound rotary electric machine according to claim 25, wherein the other rotor constituting the other member is configured as a field magnet type or a reluctance type. 27. A partially laminated core is stacked on a core portion other than a winding portion of a laminated core in which a coil is toroidally wound around an annular core portion, and an uppermost end surface of the partially laminated core constitutes the other side member. An armature structure for a toroidal wound rotary electric machine, wherein the armature structure is formed on a magnetically opposed surface of a surface-facing type that faces the side member in the axial direction.