WO2021024518A1 - Armature, rotating electric machine, linear motor, and method for manufacturing armature, rotating electric machine, and linear motor - Google Patents

Abstract

This armature (10) is formed by arranging and combining a plurality of coil winding bodies (10A) side by side with each other in a first direction (X). The coil winding bodies (10A) are each provided with: a pair of divided cores (11) each having a divided yoke portion (11y) and a divided tooth portion (11t) projecting from the divided yoke portion (11y) in a second direction (Y) orthogonal to the first direction (X); a permanent magnet (3) sandwiched between the pair of divided cores (11); and a coil (4) wound around the pair of divided tooth portions (11). When comparing two cross-sectional areas obtained by dividing a cross-section of the permanent magnet (3), which is vertical to a third direction (Z) orthogonal to the first direction (X) and the second direction (Y), into halves in the first direction (X) at the center in the second direction (Y), the cross-sectional area on the end side of the divided tooth portion (11t) is larger than the cross-sectional area on the divided yoke portion (11y) side.

Description

Manufacturing method of armature, rotary electric machine, linear motor, armature, rotary electric machine, linear motor

The present application relates to an armature, a rotary electric machine, a linear motor, and a method for manufacturing an armature, a rotary electric machine, and a linear motor.

In rotary electric machines such as motors for industrial and in-vehicle use, miniaturization, high speed, and wide range of operating speed are required. As a motor that meets these demands, a so-called flux switching motor has been proposed in which the rotor structure is a simple and robust motor structure and a coil and a permanent magnet are used on the stator side. In order to reduce the armature inductance of this motor and expand the operating speed range, a motor in which a magnet is embedded near the center of the teeth portion has been proposed (see, for example, Patent Document 1).

Japanese Patent No. 6421349 (paragraph 0028-paragraph 0050, FIG. 1)

Patent Document 1 proposes a motor in which a permanent magnet is embedded near the center of the teeth portion. The permanent magnets are arranged in the field slots provided in the iron core so that the magnetic pole surfaces having the same polarity face each other in the circumferential direction. Further, a field winding is housed on the radial outer side of the permanent magnet inserted in the field slot.

However, the permanent magnet has a rectangular cross section perpendicular to its axial direction, the field slot is open only inside the armature core, and the outer peripheral surface of the armature core constitutes the armature core. It is connected all around by an electromagnetic steel plate. There is a problem that a short-circuit magnetic flux is generated in which the NS pole of the permanent magnet is short-circuited via the connected portion, and a large amount of magnetic flux passing through the outer peripheral side of the stator, which does not serve as a driving force for the rotor, is generated.

The present application discloses a technique for solving the above-mentioned problems, and prevents short-circuit magnetic flux and increases the magnetic flux density on the tooth portion side of the armature to increase the efficiency of armatures, rotary motors, and the like. It is an object of the present invention to provide a method for manufacturing a linear motor, an armature, a rotary electric machine, and a linear motor.

The armature disclosed in the present application is
An armature that combines multiple coil winding bodies adjacent to each other in the first direction.
The coil winding body is between a pair of split cores each having a split yoke portion and a split teeth portion protruding from the split yoke portion in a second direction orthogonal to the first direction, and a pair of the split cores. With a permanent magnet sandwiched between
A pair of coils wound around the split teeth portion
Comparing the cross-sectional areas of the permanent magnets that are perpendicular to the first direction and the third direction orthogonal to the second direction at the center of the second direction and bisected in the first direction, the division The cross-sectional area on the tip side of the teeth portion is larger than the cross-sectional area on the split yoke portion side.

The rotary electric machine disclosed in the present application is
It has a stator formed as an armature and a rotor.
The plurality of coil winding bodies are combined in an annular shape in the first direction.
The rotor is rotatably supported with the outer peripheral surface of the rotor core facing the inner peripheral surface of the stator.

The linear motor disclosed in the present application is
A mover formed as an armature and a flat plate-shaped stator provided at equal intervals in the first direction and having a plurality of convex portions protruding in the second direction are provided.
The plurality of coil winding bodies are combined in a straight line.
The mover is capable of linear movement by having the tip of the split tooth portion of the mover face the upper surface of the stator.

The method for manufacturing an armature disclosed in the present application is as follows.
The split core manufacturing process for manufacturing the split core and
A coil manufacturing process in which the coil is wound in advance and
A coil insertion step of inserting the coil into the pair of split teeth portions of the pair of split cores in which the space between the two is closed from the tip side of the split teeth portions.
A pair of the split cores are opened in a direction in which the pair of the split cores are separated from each other, and a magnetized magnet material is used between the pair of the split cores from the tip side of the split teeth portion. It has a permanent magnet intermediate body which is the permanent magnet before magnetism, or a magnetic material insertion step of inserting the permanent magnet.
Further, the method for manufacturing a rotary electric machine disclosed in the present application is as follows.
A stator manufactured by the method of manufacturing a stator as a method of manufacturing an armature, and a stator
The rotor is rotatably arranged so that the outer peripheral surface of the rotor core faces the inner peripheral surface of the stator.
Further, the method for manufacturing a linear motor disclosed in the present application is as follows.
A mover manufactured by the method for manufacturing a mover as a method for manufacturing an armature,
On the stator, the tip of the split tooth portion faces the upper surface of the stator and is movably arranged.

According to the method for manufacturing an armature, a rotary electric machine, a linear motor, and an armature, a rotary electric machine, and a linear motor disclosed in the present application, short-circuit magnetic flux is prevented and the magnetic flux density on the tooth portion side of the armature is increased. It is possible to provide highly efficient armatures, rotary electric machines, linear motors, and methods for manufacturing armatures, rotary electric machines, and linear motors.

It is a perspective view of the rotary electric machine according to Embodiment 1. FIG. It is a perspective view of the linear motor according to Embodiment 1. FIG. It is a perspective view of the stator according to Embodiment 1. FIG. It is a side view of the stator according to Embodiment 1. FIG. FIG. 4 is a cross-sectional view taken along the line AA of FIG. It is a perspective view of the coil winding body which comprises the stator according to Embodiment 1. FIG. It is an exploded view of the coil winding body according to Embodiment 1. FIG. It is a perspective view of the split core according to Embodiment 1. FIG. It is a flow chart which shows the manufacturing process of the stator according to Embodiment 1. FIG. FIG. 8 is a cross-sectional view taken along the line BB of FIG. This is another example of a cross-sectional view of a main part of the divided core according to the first embodiment. It is a conceptual diagram which shows the structure of the winding apparatus by Embodiment 1. FIG. It is sectional drawing which is perpendicular to the axial direction of the coil winding body as a comparative example by Embodiment 1. FIG. FIG. 5 is a cross-sectional view perpendicular to the axial direction of the coil wound body according to the first embodiment. It is sectional drawing which shows the other variation of the permanent magnet according to Embodiment 1. FIG. It is sectional drawing which shows the other variation of the permanent magnet according to Embodiment 1. FIG. It is sectional drawing which shows the other variation of the permanent magnet according to Embodiment 1. FIG. FIG. 5 is a cross-sectional view of a conductor constituting the coil according to the first embodiment. FIG. 5 is a cross-sectional view of a conductor constituting the coil according to the first embodiment. FIG. 5 is a cross-sectional view of a conductor constituting the coil according to the first embodiment. It is a modification of the coil according to the first embodiment, and is the figure explaining the continuous dislocation part. It is a perspective view of the batch dislocation part of the coil by Embodiment 1. FIG. It is a figure explaining the position which provides the batch dislocation part shown in FIG. It is a flow chart which shows the manufacturing process of the stator according to Embodiment 2. It is a perspective view of the coil winding body (excluding the split core) according to Embodiment 2. FIG. 5 is an exploded perspective view showing a relationship between an insulating portion for a coil winding body and a coil according to the second embodiment. It is a conceptual diagram which shows the coil manufacturing apparatus and the coil manufacturing process by Embodiment 2. FIG. It is a conceptual diagram which shows the coil insertion process by Embodiment 2. FIG. It is a supplementary drawing explaining the dimensional relationship between the coil and a pair of split cores according to the second embodiment. It is a conceptual diagram which shows the permanent magnet intermediate insertion process by Embodiment 2. FIG. FIG. 5 is a conceptual diagram showing a state in which the permanent magnet intermediate insertion step according to the second embodiment is completed. It is a figure explaining the effect of Embodiment 2. It is a figure explaining the effect of Embodiment 2. It is a flow chart which shows the manufacturing process of the stator according to Embodiment 3. It is an exploded view of the coil winding body according to Embodiment 3. It is a supplementary drawing explaining the dimensional relationship between the coil and a pair of split cores according to the third embodiment. It is the DD cross-sectional view of FIG. 36, and is the conceptual diagram which shows the coil insertion process. It is sectional drawing which is perpendicular to the axial direction Z of the coil winding body according to Embodiment 4. FIG. FIG. 5 is a cross-sectional view perpendicular to the axial direction Z of the coil wound body according to the fifth embodiment. It is a figure explaining the effect which concerns on Embodiment 5.

Embodiment 1.
Hereinafter, the method of manufacturing the armature, the rotary electric machine, the linear motor, and the armature, the rotary electric machine, and the linear motor according to the first embodiment will be described with reference to the drawings.
FIG. 1 is a perspective view of the rotary electric machine 100.
As shown in FIG. 1, the circumferential direction X of the stator 10 is the first direction, the radial direction Y orthogonal to the first direction is the second direction, and the axial direction Z orthogonal to the first direction and the second direction is the third direction. And.

The rotary electric machine 100 includes a stator 10 (armature) and a rotor (movable element) 20. The main body of the rotor 20 is composed only of the rotor core 20a having ferromagnetism. The rotor 20 is rotatably supported by a bearing (not shown) with the outer peripheral surface of the rotor core 20a facing the inner peripheral surface of the stator 10. A permanent magnet is not used for the rotor 20, and the rotational force of the rotor 20 is generated by the attractive force obtained by the magnetic field generated by the coil 4 of the stator 10. The rotary electric machine 100 is a so-called flux switching motor or a switching reluctance motor.

FIG. 2 is a perspective view of the linear motor 100R. The linear motor 100R includes a stator 10R formed in a flat plate shape, and a mover 20R that floats on the stator 10R through a gap and moves linearly. That is, the tip portion 11Rtin of the split tooth portion 11Rt of the mover 20R faces the upper surface of the stator 10R. In the linear motor of FIG. 2, the moving direction X of the mover 20R is the first direction, and the protruding direction Y of the split tooth portion 11Rt orthogonal to the first direction is the direction orthogonal to the second direction, the first direction, and the second direction. Let Z be the third direction.

The linear motor 100R uses the same principle as the generation of the rotational force of the rotor 20 described above. That is, the propulsive force of the mover 20R (armature) is such that the suction force generated by the coil 4R of the mover 20R is provided on the upper surface of the stator 10R at equal intervals in the moving direction X and in the protruding direction Y. It is obtained by acting on the protruding convex portion 10Rt. The major difference between the rotary electric machine 100 and the linear motor 100R is that the stator 10 which is an armature does not move in the rotary electric machine 100, whereas the mover 20R which is an armature moves in the linear motor. Further, in the rotary electric machine 100, a plurality of coil winding bodies (details will be described later) constituting the stator 10 which is an armature are combined in an annular shape, whereas in the linear motor 100R, the armature is used. The point is that a plurality of coil winding bodies constituting a certain mover 20R are linearly combined.

FIG. 3 is a perspective view of the stator 10.
FIG. 4 is a side view of the stator 10.
FIG. 5 is a cross-sectional view taken along the line AA of FIG.
FIG. 6 is a perspective view of the coil winding body 10A constituting the stator 10.
FIG. 7 is an exploded view of the coil winding body 10A and the coil winding intermediate body 10MA.
FIG. 7 will be used in two ways in the following description. The case where the coil winding intermediate body 10MA having the unmagnetized permanent magnet intermediate 3M is described and the case where the coil winding body 10A having the magnetized permanent magnet 3 is described.
FIG. 8 is a perspective view of the split core 11.
FIG. 9 is a flow chart showing a manufacturing process of the stator 10.
FIG. 10 is a cross-sectional view taken along the line BB of FIG.
FIG. 11 is another example of a cross-sectional view of a main part of the divided core 11.

In the present embodiment, the armature will be described by taking a rotary electric machine as an example. However, as described above, the principle of driving the rotary electric machine 100 and the linear motor 100R is the same, and the present application applies to both the rotary electric machine and the linear motor. Applicable.

As shown in FIGS. 1 and 2, the stator 10 is composed of 14 coil winding bodies 10A combined in an annular shape. However, the number of coil winding bodies 10A is not limited to this, and the stator 10 can be configured by any number required by the characteristics of the rotary electric machine 100.

As shown in FIGS. 6 and 7, the coil winding body 10A has two pairs of divided cores 11 divided in the circumferential direction. The split core 11 shown in FIG. 8 and the same split core 11 as the split core 11 inverted in the axial direction Z form a pair of split cores 11. The split core 11 is a laminated core in which electromagnetic steel sheets, which are magnetic plate materials, are laminated in the axial direction Z. Each of the split cores 11 has a split yoke portion 11y, a split tooth portion 11t protruding inward in the radial direction from the split yoke portion 11y, and one of the circumferential directions X from the tip of the split tooth portion 11t in the radial direction Y. A shoe portion 11s protruding from the permanent magnet 3) is provided.

A permanent magnet 3 is sandwiched between the pair of split cores 11 in the circumferential direction X. The cross-sectional shape of the permanent magnet 3 perpendicular to the axial direction Z is trapezoidal. A coil 4 is wound around the pair of split tooth portions 11t of the pair of split cores 11 via the two insulating portions 21a and the two insulating portions 21b. The insulating portion 21a and the insulating portion 21b electrically insulate the split core 11 and the coil 4.

That is, the coil winding body 10A has a structure in which a pair of split cores 11 having a permanent magnet 3 sandwiched between them is wound around two split tooth portions 11t with magnet wires via insulating portions 21a and 21b. .. Further, the two divided cores 11 are symmetrical with respect to the permanent magnet 3. The split core of the mover 20R of the linear motor 100R shown in FIG. 2 has the same configuration.

Here, regarding the divided cores 11 of FIGS. 7 and 8, the upper end surface of the paper surface is one end surface, the lower end surface of the paper surface is the other end surface, and the divided core 11 on the right side of FIG. Let the core 11 be the other split core 11.

The first insulating portion 21a is an upper half of the one end surface of one split core 11 in the axial direction Z and the inner peripheral surface of the slot S of one split core 11 in the axial direction Z (inner peripheral surface of the split yoke portion 11y). And the side surface of the split tooth portion 11t in the circumferential direction X and the outer peripheral surface of the shoe portion 11s). The first insulating portion 21b covers the other end surface of one of the split cores 11 in the axial direction Z and the other half of the inner peripheral surface of the slot S in the axial direction Z.

The second insulating portion 21b is the upper half of the one end surface of the other split core 11 in the axial direction Z and the inner peripheral surface of the slot S of the other split core 11 in the axial direction Z (inner circumference of the split yoke portion 11y). The surface and the side surface of the split tooth portion 11t in the circumferential direction X and the outer peripheral surface of the shoe portion 11s) are covered. Further, the second insulating portion 21a covers the other end surface of the other split core 11 in the axial direction Z and the other half of the inner peripheral surface of the slot S in the axial direction Z. The insulating portions 21a and 21b are inserted along the inner peripheral surface of the slot S from two vertical directions in the axial direction Z, respectively.

Next, a method of manufacturing the stator 10 will be described with reference to FIG.
First, a plurality of iron core pieces 11p shown in FIG. 8 are punched out from the electromagnetic steel sheet and laminated, and the layers are fixed between the layers (step S1-1: split core manufacturing step). Since the split core 11 is a pair of two, 28 iron core pieces 11p are manufactured in total.

As described above, since one of the pair of split cores 11 has a shape that can be combined by arranging the top and bottom in the Z direction in reverse, the distinction between left and right is omitted. Caulking is an example of a method of fixing the layers of the divided cores 11.

As shown in FIGS. 8 and 10, at least two plastically processed concave portions 12r and convex portions 12p are provided at appropriate positions of the iron core pieces 11p, and the iron core pieces 11p laminated in the axial direction Z are connected to each other. Fits and sticks.

As another fixing method, as shown in FIG. 11, an electromagnetic steel sheet having an adhesive layer 13 capable of adhering by melting and solidifying by heat is used on the surface of the electromagnetic steel sheet in which the iron core piece 11p is punched out in advance. Can be done. The fixing method is not limited to this.

A permanent magnet intermediate 3M (permanent magnet 3 before magnetization) is manufactured using a magnetizable material in a process separate from the split core manufacturing step (step S1-2: permanent magnet intermediate manufacturing step). .. Further, the insulating portions 21a and 21b are manufactured in a process different from the above two steps (step S1-3: insulating portion manufacturing step).

Next, the split core assembly step (step S2) is carried out. In this step, as shown in FIG. 7, the prepared pair of two split cores 11, the two insulating portions 21a and 21b, respectively, and the permanent magnet intermediate 3M before magnetism are combined.

Next, using a magnetizing yoke portion (not shown), the permanent magnet intermediate 3M is magnetized to obtain the permanent magnet 3 (step S3: magnetizing step).
FIG. 12 is a conceptual diagram showing the configuration of the winding device 60.
Next, the coil 4 is wound around the pair of split cores 11 sandwiching the magnetized permanent magnet 3 by using the winding device 60 to obtain the coil winding body 10A (step S4: coil winding step). ).

Next, in the stator assembly step (step S5), 14 coil winding bodies 10A are combined in an annular shape as shown in FIG. This step includes a step for maintaining the posture of the coil winding bodies 10A arranged in an annular shape. Then, for example, the stator 10 shown in FIG. 3 is obtained through a process of welding the circumferential ends of the split yoke portions 11y of the adjacent split cores 11 to each other.

Next, in the connection step (step S6), the terminal wires 41 of each coil 4 are connected to form a circuit for realizing the function of the stator 10. The magnetizing step of the permanent magnet 3 (step S3) can be performed immediately after the production of the permanent magnet intermediate 3M (step S1-2) or after the coil winding step (step S4), and is shown in FIG. It is not limited to the order of the process.
Finally, the stator 10 and the rotor 20 are rotatably arranged so that the outer peripheral surface of the rotor core 20a faces the inner peripheral surface of the stator 10 to obtain the rotary electric machine 100.
When the armature is the mover 20R of the linear motor 100R, the mover 20R is used.
On the stator 10R, the tip portion 11Rtin of the split teeth portion 11Rt is opposed to the upper surface of the stator 10R and is movably arranged to obtain the linear motor 100R.

Next, improvement of the magnetic flux density on the inner peripheral side of the permanent magnet 3 will be described with reference to FIGS. 13 to 17.
FIG. 13 is a cross-sectional view of the coil winding body 10B as a comparative example, perpendicular to the axial direction Z.
FIG. 14 is a cross-sectional view of the coil winding body 10A perpendicular to the axial direction Z.
In the coil winding body 10B of the comparative example shown in FIG. 13, permanent magnets 3C having a rectangular cross-sectional shape perpendicular to the axial direction Z are sandwiched by a pair of split cores 11C from both sides in the circumferential direction X.
On the other hand, in the coil winding body 10A of the present application shown in FIG. 14, permanent magnets 3 having a substantially trapezoidal cross-sectional shape perpendicular to the axial direction Z are sandwiched by a pair of split cores 11 from both sides in the circumferential direction X. The width of the permanent magnet 3 in the circumferential direction is larger at the inner peripheral side end portion (end portion on the split tooth 11 side) than at the outer peripheral side end portion (end portion on the split yoke side). However, the cross-sectional areas of the permanent magnet 3 and the permanent magnet 3C perpendicular to the axial direction Z are equal.

In the case of the coil winding body 10A shown in FIG. 14 and the coil winding body 10B as a comparative example shown in FIG. 13, two types of magnetic fluxes are roughly divided into the pair of split cores 11 and the split cores 11B, respectively. It flows. The flow of the first magnetic flux E1 escapes from the N poles of the permanent magnets 3 and 3C through one of the split yoke portions 11y and 11By on the side in contact with the N poles to the outer peripheral side of the stator, and further splits the other. It is a magnetic flux that returns to the S pole of the permanent magnets 3 and 3C through the split yoke portions 11y and 11By of the cores 11 and 11B.

The flow of the second magnetic flux E2 passes from the N poles of the permanent magnets 3 and 3C through one of the split tooth portions 11t and 11Bt on the side in which the N poles are in contact, to the inner peripheral side of the stator, and further to the inner peripheral side of the stator. It is a magnetic flux that returns to the S pole of the permanent magnets 3 and 3C through the divided tooth portions 11t and 11Bt of the divided cores 11 and 11B.

As can be seen by comparing FIG. 13 and FIG. 14, the coil winding body 10A of the present application shown in FIG. 14 has the above-mentioned second magnetic flux E2 more than the coil winding body 10B of the comparative example shown in FIG. Is larger than the flow of the first magnetic flux E1 described above. That is, the magnetic flux density is high. The magnetic flux that contributes to the rotational force of the rotor 20 is the second magnetic flux E2.

In this way, although the permanent magnet 3 and the permanent magnet 3C have the same cross-sectional area perpendicular to the axial direction Z, the cross-sectional shape of the permanent magnet 3 is longer on the inner peripheral side than on the outer peripheral side. The magnetic flux density of the second magnetic flux E2 flowing inward in the radial direction of the stator 10 can be improved as compared with the permanent magnet 3B having a rectangular cross-sectional shape. As a result, the torque given to the rotor 20 can be increased, so that the efficiency of the rotary electric machine 100 can be improved, the size can be reduced, and the cogging torque can be reduced.

The permanent magnet 3 having a cross-sectional shape perpendicular to the axial direction Z having a small outer peripheral side and a large inner peripheral side has been described so far. For example, in the axial direction Z where the width of the outer peripheral side end is zero. The same effect can be expected even if the vertical cross section has a triangular shape.

The reason why we have dared to express it as "trapezoid" is that if the cross-sectional shape perpendicular to the axial direction Z of the permanent magnet is a perfect triangle, there is a concern that the sharp tip on the outer peripheral side of the permanent magnet will crack. In this application, considering that the minute difference in the width of the tip does not significantly affect the characteristics of the rotary electric machine 100, or that a surface having a minute width remains from the viewpoint of processing the permanent magnet. These are collectively referred to as a trapezoidal shape in a broad sense.

Further, the outer peripheral surface and the inner peripheral surface of the permanent magnet 3 may be curved surfaces having the same curvature as the outer peripheral surface and the inner peripheral surface of the divided core 11, respectively.

15 to 17 are cross-sectional views showing other variations of the permanent magnet 3.
As a modification of the permanent magnet having different widths on the inner peripheral side and the outer peripheral side in the cross section perpendicular to the axial direction Z of the permanent magnet, for example, there are examples as shown in FIGS. 15 to 17. In each case, the inner peripheral width Lin is larger than the outer peripheral width Lout.

In the permanent magnet 3D shown in FIG. 15, the length of the outer peripheral direction X is Lout, and the width of the inner peripheral side X in the circumferential direction is 2 (L2) with respect to the length L1 in the radial direction Y. It has a shape that grows in steps. Further, the permanent magnet 3E shown in FIG. 16 has a rectangular cross section 3E1 having a rectangular cross section perpendicular to the axial direction Z on the outer peripheral side and a trapezoidal cross section having a rectangular cross section perpendicular to the axial direction Z on the inner peripheral side of the rectangular cross section 3E1. It has a shape that is combined with the trapezoidal portion 3E2. The short side of the rectangular section 3E1 and the length of the upper base of the trapezoidal section 3E2 are equal. Further, the permanent magnet 3F shown in FIG. 17 has a first cross section trapezoidal portion 3F1 having a trapezoidal cross section perpendicular to the axial direction Z on the outer peripheral side and a cross section perpendicular to the axial direction Z on the inner peripheral side of the first cross section trapezoidal portion 3F1. Has the same shape as the trapezoidal second cross-section trapezoidal portion 3F2. The length of the lower base of the first cross-section trapezoidal portion 3F1 and the length of the upper base of the second cross-section trapezoidal portion 3F2 are equal.

In this way, comparing the cross-sectional areas of the permanent magnet 3 divided into two in the circumferential direction X at the center of the radial direction in the cross section perpendicular to the axial direction Z, the cross-sectional area on the tip side of the divided tooth portion 11t is larger. The cross-sectional area on the split yoke portion 11y side may be larger than the cross-sectional area, and the shapes of FIGS. 15 to 17 may be combined.

Next, the conductor of the coil 4 shown in FIGS. 5 to 7 and a modified example thereof will be described with reference to FIGS. 18 to 23.

18 to 20 are cross-sectional views of the bundled wire 42 constituting the coil 4 of the first embodiment. The bundled wire 42 is a so-called para-wire composed of a plurality of conductors 43 connected in parallel. As the conductor 43 constituting the bundled wire 42, any of the conductors shown in FIGS. 18 to 20 may be used.
FIG. 21 is a modification of the coil 4 of the first embodiment, and is a diagram for explaining the continuous dislocation portion 47.
FIG. 22 is a modification of the coil of the first embodiment, and is a diagram for explaining the batch dislocation portion 48.
FIG. 23 is a diagram illustrating a position where the batch dislocation portion shown in FIG. 22 is provided.

When the energizing current, applied voltage, or frequency of the coil 4 is increased in order to increase the torque applied to the rotor 20, the resistance ratio between the vicinity of the surface of the conductor 43 and the central portion of the conductor 43 changes, that is, the so-called skin effect. Occurs. The higher the frequency, the more remarkable the skin effect is, the more the current is concentrated on the surface of the conductor 43.

Then, there is a problem that the resistance of the conductor 43 and the copper loss of the rotary electric machine increase due to this skin effect. Therefore, it is generally known that the skin effect can be alleviated by increasing the number of conductors while equalizing the conductor cross-sectional area per turn of the coil 4.

A coil winding body 10A composed of a split core 11 provided with both a centrally wound coil 4 and a permanent magnet 3, which is the object of the present application, and a plurality of these, a stator 10 arranged in an annular shape, and the stator 10 thereof. For the rotary electric machine 100 used, it is effective to use a bundled wire 42 in which a plurality of conductors 43 with an insulating coating are bundled in order to suppress the skin effect.

Copper and aluminum are used for the conductor 43 used in the rotary electric machine 100. In addition to the round wire shown in FIG. 18, the conductor 43 has a square wire having a square cross section having a side length of a as shown in FIG. 19 or a two-sided length shown in FIG. A flat line having a rectangular cross section, where a> b, is used.

Further, the surface of the conductor 43 is usually covered with an insulating coating 44 such as an enamel layer, and various types of the thickness t of the insulating coating 44 are provided by the manufacturer depending on the withstand voltage specification. In addition, some coils have an adhesive layer on the outside of the insulating coating 44 in order to heat the coil 4 after winding and self-fuse it to maintain its shape. Further, even if the wire is not a self-bonding wire, as shown in FIG. 20, the outer circumference of the bundle wire 42 may be covered with an insulating tape 46 for taping.

On the other hand, as a drawback of thinning and multi-conductors, when the bundled wire 42 is a coil 4, the conductor 43 is always located outside the other conductor 43, and conversely, it is always inside the other conductor 43. Since the conductor 43 to be located is formed, a difference in the density of the magnetic flux passing through the bundled wire 42 causes a phase difference and a potential difference, which causes a new problem that the loss of the rotary electric machine 100 increases. Therefore, in order to suppress the phase difference and the potential difference in the bundled wire, a method of providing a so-called dislocation portion in which the winding position of the conductor 43 is exchanged is known in the coil 4.

For example, as the bundled wire 42 having a dislocation portion, the continuous dislocation electric wire shown in FIG. 21 may be used.
In this dislocation wire, flat wires or square wires are stacked in two rows, and the two conductors 43 move clockwise or counterclockwise in the bundled wire and circulate at each dislocation pitch P in the longitudinal direction of the conductor 43. It is a structure having a continuous dislocation portion 47. When such a continuous dislocation electric wire is used, the general winding device 60 shown in FIG. 12 may be used in the coil winding step (step S4) shown in FIG. On the other hand, the use of continuous dislocation wires also has drawbacks.

The first drawback is that the continuous dislocation wire is more expensive than the bundled wire 42 that is not dislocated because the manufacturing cost of the dislocation portion is added. Further, as a second drawback, the continuous dislocation electric wire is easily twisted because the conductors are twisted in the same direction, and the continuous dislocation electric wire is liable to be bent, which is called a kink, while winding the coil 4. Poor workability. The third drawback is that the dislocation part swells more than the bundled wire that bundles linear conductors, so if the coil 4 is wound using this, the so-called coil space factor decreases, resulting in the torque of the rotating electric machine. It should be noted that is reduced. The coil space factor is a ratio of the effective cross-sectional area perpendicular to the axial direction Z of the slot accommodating the coil to the cross-sectional area perpendicular to the axial direction Z of the conductors actually constituting the coil.

For this reason, it is also effective to adopt the method shown in FIGS. 18 and 19 in which the dislocated bundled wire is partially twisted to provide the dislocated portion.

When a dislocation portion is provided in the coil 4 by twisting a bundle wire that has not been dislocated, for example, in the winding device 60 shown in FIG. 12, each conductor 43 as shown in FIGS. 18 and 19 is bundled in the bobbin 61. The self-fused bundle wire 42 is wound. The bundled wire 42 is fed out from the nozzle 64 of the flyer 63, which makes a linear reciprocating motion while turning around the tooth portion, via a tensioner 62 for controlling the tension for winding the bundled wire 42, and the winding process is performed. Will be implemented.

Note that, instead of the self-bonding wire as shown in FIG. 20, a bundled wire 42 taped with an insulating material such as insulating tape 46 may be used.

FIG. 22 is a perspective view of the batch dislocation portion 48 provided in the coil.
FIG. 23 is a diagram illustrating a position where the batch dislocation portion 48 shown in FIG. 22 is provided.
As shown in FIG. 22, in the winding of the coil 4, at least one bundled wire 42 is formed at least one batch dislocation portion 48 twisted 180 degrees about the axis of the bundled wire 42. As a result, it is possible to suppress an increase in loss of the rotary electric machine 100 due to the phase difference of the coil and the potential difference due to the skin effect.

In the coil 4 provided with the batch dislocation portion 48 at the position shown in FIG. 23, the bulge of the twisted portion of the bundled wire 42 does not exist in the slot S as compared with the coil using the continuous dislocation portion 47 described above. Therefore, it is possible to maintain a high space factor of the coil 4 in the slot S.

According to the method for manufacturing an armature, a rotary electric machine, a linear motor, and an armature, a rotary electric machine, and a linear motor according to the first embodiment.
The armature is
An armature that combines multiple coil winding bodies adjacent to each other in the first direction.
The coil winding body is between a pair of split cores each having a split yoke portion and a split teeth portion protruding from the split yoke portion in a second direction orthogonal to the first direction, and a pair of the split cores. With a permanent magnet sandwiched between
A pair of coils wound around the split teeth portion is provided.
Comparing the cross-sectional areas of the permanent magnets that are perpendicular to the first direction and the third direction orthogonal to the second direction at the center of the second direction and bisected in the first direction, the division Since the cross-sectional area on the tip side of the tooth is larger than the cross-sectional area on the split yoke portion side,
It is possible to prevent a short-circuit magnetic flux between the SN poles of the permanent magnet 3. Further, since the magnetic flux density flowing inward, which is close to the rotor 20 of the split core 11, can be efficiently increased, the torque applied to the rotor 20 can be increased. From these, it is expected that the efficiency of the rotary electric machine 100 can be improved, and it is possible to obtain an armature, a rotary electric machine, a linear motor, and a method for manufacturing an armature, a rotary electric machine, and a linear motor, which are small in size, have high torque, and have small cogging.

Embodiment 2.
Hereinafter, the method for manufacturing the armature, the rotary electric machine, the linear motor, and the armature, the rotary electric machine, and the linear motor according to the second embodiment will be described focusing on the parts different from the first embodiment. In the first embodiment, a method of manufacturing an armature in which a coil 4 is wound after a pair of split cores 11 are combined with a permanent magnet intermediate 3M sandwiched between them has been described. In the present embodiment, a method of manufacturing the coil 4 in advance and assembling it with other parts will be described.

FIG. 24 is a flow chart showing a manufacturing process of the stator according to the second embodiment.
FIG. 25 is a perspective view of the coil winding body 210A (excluding the split core).
FIG. 26 is an exploded perspective view showing the relationship between the insulating portion 221 for the coil winding body 210A and the coil 204.
FIG. 27 is a conceptual diagram showing the winding device 260 and the coil manufacturing process (step S1-4).
FIG. 28 is a conceptual diagram showing a coil insertion process.
FIG. 29 is a supplementary view illustrating the dimensional relationship between the coil 204 and the pair of split cores 211.
FIG. 30 is a conceptual diagram showing a process of inserting a permanent magnet intermediate.
FIG. 31 is a conceptual diagram showing a state of the coil winding intermediate 210MA in which the permanent magnet intermediate insertion step has been completed.
32 and 33 are diagrams illustrating the effects of the second embodiment.

As shown in FIG. 24, in the present embodiment, in the subsequent step of the insulating portion manufacturing step (step S1-3), the coil manufacturing step (step) using the wound frame-shaped insulating portion 221 obtained in the insulating portion manufacturing step. S1-4) Perform. In this step, as shown in FIG. 25, the coil 204 is wound around the winding frame-shaped insulating portion 221. In the first embodiment, a total of four insulating portions, two insulating portions 21a and two insulating portions 21b, are used in combination. However, the insulating portion 221 used in the present embodiment is shown in FIG. It is an integral body in the shape of a winding frame shown. The insulating portion 221 includes an inner peripheral surface of a slot for accommodating the coil 204, both end surfaces of the split tooth portion 211t in the axial direction Z, both end surfaces of the split yoke portion 211y in the axial direction Z, and the axial direction Z of the shoe portion 211s. It is integrally formed so as to cover both end faces of the coil 204, and can be used as a winding frame of the coil 204 itself. The portion of the insulating portion 221 along the split tooth portion 211t is referred to as the inner cylinder portion 211k.

By using the winding frame-shaped insulating portion 221, as shown in FIG. 27, a plurality of winding frame-shaped insulating portions 221 are locked to the winding frame jig 67 of the winding device 260, and this is used as a motor or the like. If either the winding frame stage 68 or the nozzle holder 65 is provided with a linear motion mechanism that reciprocates in the direction of the arrow U, the bobbin 61 to the tensioner 62 and the nozzle 64 are rotated as shown by the arrow Q. The bundled wire 42 can be wound around the insulating portion 221 via the above.

As a result, a plurality of coils 204 can be wound at the same time, and the shape accuracy of the coil 204 can be maintained even if the formed coil 204 is removed from the spindle shaft. Therefore, heat treatment for self-fusion between bundled wires or heat treatment or It becomes easy to peel off the insulating coating of the terminal wire of the coil 204.

Further, as in the first embodiment, it is also possible to provide the batch dislocation portion 48 in the middle of the winding of the coil 204. In that case, it is preferable to rotate the nozzle 64 in the circumferential direction T of the bundle wire 42 when winding the portion where the batch dislocation portion 48 is provided. If the wound frame-shaped insulating portion 221 can maintain the shape of the coil 204 and the insulating portion 221 has a structure for locking the terminal wire with a groove or the like, heat treatment for self-fusion is unnecessary. Is.

Next, a method of assembling the coil winding intermediate 210MA by using the winding frame-shaped insulating portion 221 obtained by the above steps and the coil 204 wound around the insulating portion 221 will be described.
First, as shown in FIG. 28, a pair of split cores 211 are prepared (split core assembly step: step S202-1). Then, as shown in FIG. 29, in the final product, the side surfaces 211u of the respective split cores 211 that come into contact with the side surfaces of the permanent magnet in the circumferential direction X are brought into contact with each other. After that, as shown in FIG. 28, the insulating portion 221 and the coil 204 wound around the insulating portion 221 are placed inside the radial direction Y (of the split core 211) while the space between the two split cores 211 is closed. It is inserted into the pair of divided cores 211 from the tip side of the divided tooth portion 211t (coil insertion step with insulating portion: step S202-2).

As shown in FIG. 29, where W is the inner diameter of the inner cylinder portion 211k inside the insulating portion 221 in the circumferential direction X, a pair of split cores 211 in a state where the space between both split cores 211 is closed. The total V of the width X in the circumferential direction of the tip portion 211tin inside the radial direction Y of the divided tooth portion 211t and the width X in the circumferential direction of the pair of shoe portions 211s is set to be smaller than W. Therefore, as described in the first embodiment, the coil 204 is wound in advance on the insulating portion 221 without first assembling the pair of split cores 11, the pair of insulating portions 21a and 21b, and the permanent magnet intermediate 3M, respectively. After the wire is drawn, it can be assembled to the pair of split cores 211.

Next, as shown in FIG. 30, the pair of split cores 11 are opened in the circumferential direction X, that is, in the directions away from each other, and are inside the radial direction Y between the split cores 211 (of the split teeth portion 211t). The coil winding intermediate 210MA is obtained by inserting the permanent magnet intermediate 203MA from the tip side) (step S202-3: permanent magnet intermediate insertion step (magnetic material insertion step)).

As shown in FIG. 31, if the adhesive is applied in advance to the range indicated by the alternate long and short dash line g on the side surface 211u that contacts the permanent magnet intermediate 203MA of the split core 211, the above steps are completed. , All members can be integrated and fixed.

Further, as described above, after winding the coil 204 around the insulating portion 221 in advance, the slot has an advantage of inserting the coil 204 into a pair of divided cores in which the space between the divided cores 211 is closed from the inside in the radial direction. The improvement of the space factor of the coil 204 in S can be mentioned.

For example, in the shape of the split core 211B as shown in FIG. 32, the line extending the bottom surface 49 (the outer surface in the radial direction Y) of the slot in the circumferential direction X is a part of the split yoke portion 211By of the split core 211B. It is interfering. Therefore, if the coil 204B is wound after the split core 211B and the permanent magnet intermediate 203MB are combined first, the conductor interferes with the split yoke portion 211By, so that the coil is wound by the winding device 60 described with reference to FIG. Difficult to line.

Therefore, as shown in FIG. 33, the insulating portion 221B that maintains the shape and the thin film insulating film 221C are shared, and the coil 204B is previously wound around the insulating portion 221B and the insulating film 221C by using the assembly method of the second embodiment. By wire, the space factor of the coil 204B can be improved even with the shape of the above slot, further miniaturization and efficiency improvement of the rotary motor can be expected, and the rotary motor with high torque and small cogging and related to this. A linear motor can be obtained.

Although FIG. 33 shows an example in which the insulating film 221C is used, in FIG. 32, if a gap is obtained between the coil 204B and the split core 211B and a sufficient insulating distance is maintained, the insulating film 221C is used. It is unnecessary.

According to the method for manufacturing an armature, a rotary electric machine, a linear motor, and an armature, a rotary electric machine, and a linear motor according to the second embodiment, the shoe portion 211s is provided at the inner tip portion 211tin of the split tooth portion 211t in the radial direction Y. Even if the pair of split cores 211, the insulating portion 221 and the permanent magnet intermediate 203MA are not assembled first, the coil 204 is wound around the insulating portion 221 in advance and then assembled to the pair of split cores 211, and the permanent magnet intermediate. Since the body 203MA can be inserted between the pair of split cores 211, improvement in assembly accuracy of the stator and improvement in productivity can be expected.

Further, according to the winding device 260, a plurality of coils 204 can be wound at the same time, and the shape accuracy of the coil 204 can be maintained even if the formed coil 204 is removed from the spindle shaft, so that the coil 204 can be self-sealed. It becomes easy to heat-treat or peel off the insulating coating of the end wire of the coil 204.

With these, energy saving in the production process and improvement in product yield can be expected. Furthermore, the coil 204B can be inserted into the slot of the split core regardless of the slot shape, and the space factor of the coil 204B can be increased. Further improvement in efficiency and miniaturization of the rotary electric motor can be expected, and torque can be increased. It is possible to obtain a rotary electric machine with high cogging and small cogging and a linear motor related thereto.

Embodiment 3.
Hereinafter, the method for manufacturing the armature, the rotary electric machine, the linear motor, and the armature, the rotary electric machine, and the linear motor according to the third embodiment will be described focusing on the parts different from those of the first and second embodiments.
FIG. 34 is a flow chart showing a manufacturing process of the stator according to the third embodiment.
FIG. 35 is an exploded view of the coil winding body 310A.
FIG. 35 will be used in two ways in the following description. The case where the coil winding intermediate 310MA having the unmagnetized permanent magnet intermediate 3M is described and the case where the coil winding body 310A having the magnetized permanent magnet 3 is described.
FIG. 36 is a supplementary view illustrating the dimensional relationship between the coil 304 and the pair of split cores 211.
FIG. 37 is a cross-sectional view taken along the line DD of FIG. 36 and is a conceptual diagram showing a coil insertion step.

The difference between the first embodiment and the present embodiment is that the shape of the insulating portion used is different. Next, the coil forming process and the coil mounting process are different.

The difference between the second embodiment and the present embodiment is that, in the second embodiment, the coil 204 is wound in advance around the winding frame-shaped insulating portion 221 and then mounted on the pair of split cores 211. On the other hand, in the present embodiment, the coil is not wound around the insulating portion, but only the coil is formed in advance. Next, in the second embodiment, the coil 204 is wound around the winding frame-shaped insulating portion 221 and then inserted into the pair of split cores 11 together. However, in the present embodiment, the pair of split cores 211 After mounting the insulating portions 321a and 321b, the separately formed coil 304 is mounted.

In the present embodiment, in the split core assembly step (step S302-1), first, the pair of split cores 211 manufactured in the split core manufacturing step (step S1-1) are combined with the insulating portion manufacturing step (step S1-3). Assemble the pair of insulating portions 321a and the pair of insulating portions 321b manufactured in 1.

As shown in FIG. 36, where the width of the circumferential direction X of the cavity inside the coil 304 is W2, the circumferential directions of the insulating portions 321a and 321b mounted on the pair of split cores 211 at the radial inner tips. The width V2 between the outer ends is set to be smaller than W2.

In the same procedure as in the second embodiment, the coil 304 manufactured in the coil manufacturing step (step S1-4) is attached to the insulating portions 321a and 321b to form a pair of split cores 211 in which the space between the two is closed. It is inserted into the pair of split tooth portions 211t from the inside in the radial direction (the tip end side of the split teeth portions 211t) (coil insertion step: step S302-2).

Next, the pair of split cores 211 are opened in the circumferential direction X, that is, in the directions away from each other, and the permanent magnet intermediate 3M is inserted between the split cores 211 from the inside in the radial direction Y to wind the coil. Obtaining an intermediate 310MA (step S202-3: permanent magnet intermediate insertion step).

As shown in FIG. 37, the inner collar (broken line portion) provided in the insulating portions 21a and 21b of the third embodiment is not provided in the insulating portions 321a and 321b. Therefore, even if only the coil 304 is used, the coil 304 wound in advance can be independently inserted into the pair of split cores 211 from the inside in the radial direction Y as in the second embodiment. Then, through the magnetizing step (step S3), the coil winding intermediate 310MA becomes the coil winding body 310A. Subsequent steps are the same as in the second embodiment.

According to the method for manufacturing an armature, a rotary electric machine, a linear motor, and an armature, a rotary electric machine, and a linear motor according to the third embodiment, in addition to the effects of the first and second embodiments, the insulation is higher than that of the second embodiment. The resin material of the part can be suppressed. As a result, the productivity of the product can be improved, which saves energy and improves the yield of bookbinding.

Embodiment 4.
Hereinafter, variations of the permanent magnets will be described with reference to the armature, rotary electric machine, linear motor, and the manufacturing method of the armature, rotary electric machine, and linear motor according to the fourth embodiment, focusing on the parts different from the first to third embodiments. ..
FIG. 38 is a cross-sectional view of the coil winding body 410A perpendicular to the axial direction Z.
Generally, when the magnetic field generated by the stator coil penetrates the permanent magnet in the center of the coil, an eddy current is generated on the surface of the magnet. This eddy current works in the direction of canceling the original magnetic field by creating a new magnetic field, and as a result, thermal demagnetization occurs in which the magnetic characteristics deteriorate due to the increase in Joule heat.

Therefore, in the present embodiment, as shown in FIG. 38, a permanent magnet 403 in which split permanent magnets 403B having a trapezoidal cross section are stacked and bonded in the radial direction Y (the permanent magnet 403 is located in the radial direction Y of 211t of the teeth portion). By using (synonymous with being vertically divided into a plurality of permanent magnets), the loss due to the above eddy current is suppressed.

As described in the first embodiment, the shape of the permanent magnet 403 as a whole has a triangular or trapezoidal cross section perpendicular to the axial direction Z, and the width of the circumferential direction X inside the radial direction Y is the diameter. It is larger than the width in the circumferential direction outside the direction Y. Therefore, the permanent magnet 403 is divided into a plurality of divided permanent magnets 403B in the radial direction Y.

According to the method for manufacturing an armature, a rotary electric machine, a linear motor, and an armature, a rotary electric machine, and a linear motor according to the fourth embodiment, in addition to the effect of the first embodiment, the eddy current is reduced to obtain magnetic characteristics. Higher rotary armatures and related linear motors can be obtained.

Embodiment 5.
Hereinafter, the method for manufacturing the armature, the rotary electric machine, the linear motor, and the armature, the rotary electric machine, and the linear motor according to the fifth embodiment will be described focusing on the parts different from the fourth embodiment.
FIG. 39 is a cross-sectional view of the coil winding body 510A perpendicular to the axial direction Z.
FIG. 40 is a diagram illustrating the effect according to the present embodiment.
In this embodiment, the reinforcing structure of the permanent magnet 503 will be described in particular.

As shown in FIG. 39, in a cross-sectional view perpendicular to the axial direction of the coil winding body 510A, the outer peripheral side (end of the split yoke portion 211y side) and the inner peripheral side (split teeth portion) of the permanent magnet 503 in the radial direction Y Both of the ends on the 211t side) are provided with a non-conductive and non-magnetic reinforcing portion 33a and a reinforcing portion 33b that are in contact with the permanent magnet 503 and are sandwiched between the pair of split cores 211, respectively. The cross section of the reinforcing portions 33a and 33b perpendicular to the axial direction Z is trapezoidal.

By providing the reinforcing portions 33a and 33b, as shown in FIG. 40, after arranging a plurality of coil winding bodies 510A in an annular shape, adjacent split cores 211 are welded to each other, and the housing 7 is fitted by shrink fitting or the like. At the time of fitting, the compressive stress acting on the permanent magnet 503 can be relaxed.

When the housing 7 is shrink-fitted and fitted to a plurality of coil winding bodies 510A fixed in an annular shape, the coil winding bodies 510A are fitted with the stator 510 shown in FIG. 40 due to heat shrinkage after fitting. The stress Q1 toward the axis works. The stress Q1 is a stress Q2 and a stress Q3 that press the adjacent coil winding bodies 510A against each other in the circumferential direction X.

Then, the stresses Q2 and Q3 are concentrated on the portions of the permanent magnet 503 closest to the inner peripheral side and the outer peripheral side in the radial direction Y. Therefore, by inserting the reinforcing portions 33a and 33b into the portion, the permanent magnet 503 is prevented from being cracked by the stresses Q2 and Q3. As a result, the yield and productivity of the product can be improved. The materials of the reinforcing portions 33a and 33b may be non-conductive materials and have magnetism. Even in this case, the eddy currents generated in the reinforcing portions 33a and 33b can be reduced.

The permanent magnet 503 may be an integral one, or may be a permanent magnet 503 divided in the radial direction as described in the fourth embodiment.

According to the method for manufacturing the armature, the rotary electric machine, the linear motor, and the armature, the rotary electric machine, and the linear motor according to the fifth embodiment, in addition to the effects of the first to fourth embodiments, the rotary electric machine having a higher yield , A linear motor related to this can be obtained.

Although the present application describes various exemplary embodiments and examples, the various features, embodiments, and functions described in one or more embodiments are applications of a particular embodiment. It is not limited to, but can be applied to embodiments alone or in various combinations.
Therefore, innumerable variations not illustrated are envisioned within the scope of the techniques disclosed in the present application. For example, it is assumed that at least one component is modified, added or omitted, and further, at least one component is extracted and combined with the components of other embodiments.

100 rotary electric machine, 100R linear motor, 10,510 stator, 10A, 10B, 210A, 310A, 410A, 510A coil winding body, 10MA, 210MA, 310MA coil winding intermediate body, 10Rt convex part, 10,10R stator , 11, 11B, 11C, 211, 211B split core, 11p iron core piece, 11s, 211s shoe part, 11t, 11Rt, 211t split tooth part, 211tin, 11Rtin tip part, 11y, 211y split yoke part, 211u side surface, inside 211k Cylinder part, 12p convex part, 12r concave part, 13 adhesive layer, 20 rotor, 20R mover, 20a rotor core, 21a, 21b, 221,221B, 321a, 321b insulation part, 221C insulation film, 3,3C, 3D , 3E, 3F, 403,503 Permanent magnet, 403B Split permanent magnet, 3E1 Rectangular cross section, 3E2 Trapezoidal section, 3F1 First cross section trapezoidal part, 3F2 Second cross section trapezoidal part, 3M, 203MA, 203MB Permanent magnet intermediate, 33a, 33b Reinforcement part, 42 bundled wire, 43 conductor, 44 insulation coating, 46 insulation tape, 47 continuous dislocation part, 48 batch dislocation part, 49 bottom surface, 4,4R, 204,204B, 304 coil, 60,260 winding Equipment, 61 bobbin, 62 tensioner, 63 flyer, 64 nozzle, 65 nozzle holder, 66 rotational power, 67 winding frame jig, 68 winding frame stage, 7 housing, P shift pitch, S slot, U arrow, Lin, Lout width , X circumferential direction, Y radial direction, Z axis direction, E1, E2 magnetic flux, Q1, Q2, Q3 stress.

Claims (15)

1. An armature that combines multiple coil winding bodies adjacent to each other in the first direction.
   The coil winding body is between a pair of split cores each having a split yoke portion and a split teeth portion protruding from the split yoke portion in a second direction orthogonal to the first direction, and a pair of the split cores. With a permanent magnet sandwiched between
   A pair of coils wound around the split teeth portion is provided.
   Comparing the cross-sectional areas of the permanent magnets that are perpendicular to the first direction and the third direction orthogonal to the second direction at the center of the second direction and bisected in the first direction, the division An armature in which the cross-sectional area on the tip side of the teeth portion is larger than the cross-sectional area on the split yoke portion side.
2. The armature according to claim 1, wherein the permanent magnet has a triangular or trapezoidal cross-sectional shape perpendicular to the third direction.
3. The armature according to claim 1 or 2, wherein the permanent magnet is divided into a plurality of parts perpendicular to the second direction of the divided tooth portion.
4. The armature according to any one of claims 1 to 3, further comprising an insulating portion that electrically insulates the pair of the split cores and the coil.
5. The armature according to claim 4, wherein the insulating portion covers the inner peripheral surface of the slot for accommodating the coil and both end surfaces of the divided tooth portion in the third direction, and is integrally formed in a winding frame shape. ..
6. The armature according to claim 5, further comprising shoe portions projecting in the first direction on the opposite side of the permanent magnet from the tip portions of the split teeth portions in the pair of split cores in the second direction.
7. The armature according to claim 6, wherein the sum of the width of the pair of tip portions in the first direction and the width of the pair of shoe portions in the first direction is smaller than the inner diameter of the insulating portion in the first direction. ..
8. Both the end portion of the permanent magnet on the split yoke portion side and the end portion on the split tooth portion side are in contact with the permanent magnet and are sandwiched between the pair of the split cores. The armature according to any one of claims 1 to 7, further comprising a reinforcing portion.
9. The armature according to claim 8, wherein the reinforcing portion is non-conductive.
10. Claim that the coil comprises a bundle wire having a plurality of conductors connected in parallel, and the bundle wire has at least one batch dislocation portion twisted 180 degrees about the axis of the bundle wire. The armature according to any one of claims 1 to 9.
11. A stator and a rotor formed as the armature according to any one of claims 1 to 10 are provided.
    The plurality of coil winding bodies are combined in an annular shape in the first direction.
    The rotor is a rotary electric machine that is rotatably supported by facing the outer peripheral surface of the rotor core with the inner peripheral surface of the stator.
12. A mover formed as an armature according to any one of claims 1 to 10 and a plurality of convex portions provided at equal intervals in the first direction and protruding in the second direction. Equipped with a flat plate-shaped stator to have
    The plurality of coil winding bodies are combined in a straight line.
    The mover is a linear motor capable of linearly moving by facing the tip of the split teeth portion of the mover against the upper surface of the stator.
13. The method for manufacturing an armature according to any one of claims 1 to 10.
    The split core manufacturing process for manufacturing the split core and
    A coil manufacturing process in which the coil is wound in advance and
    A coil insertion step of inserting the coil into the pair of split teeth portions of the pair of split cores in which the space between the two is closed from the tip side of the split teeth portions.
    A pair of the split cores are opened in a direction in which the pair of the split cores are separated from each other, and a magnetized magnet material is used between the pair of the split cores from the tip side of the split teeth portion. A method for manufacturing an armature having a permanent magnet intermediate which is the permanent magnet before magnetism or a magnetic material insertion step for inserting the permanent magnet.
14. A stator manufactured by the method for manufacturing a stator as a method for manufacturing an armature according to claim 13, and a stator.
    A method for manufacturing a rotary electric machine in which a rotor is rotatably arranged so that the outer peripheral surface of the rotor core faces the inner peripheral surface of the stator.
15. A mover manufactured by the method for manufacturing a mover as the method for manufacturing an armature according to claim 13.
    A method for manufacturing a linear motor on a stator, in which the tip end portion of the split tooth portion is opposed to the upper surface of the stator and is arranged in a movable manner.

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