JP2021192578A - Electric motor - Google Patents

Abstract

To provide an electric motor using a magnetic field generation part adopting a structure of laminating planar conductive members or a structure of using a rectangular parallelepiped conductive member.SOLUTION: An electric motor comprises: an armature for generating a magnetic field; and a magnetic pole relatively movable with the armature, in which the armature comprises: a plurality of magnetic field generation parts arranged around each of a plurality of iron cores arranged in relative movement directions with the armature; and a plurality of connection parts connecting a first magnetic field generation part with a second magnetic field generation part in the same phase of a plurality of phases of the plurality of magnetic field generation parts, and arranged in directions crossing the movement direction.SELECTED DRAWING: Figure 5

Description

The present invention relates to a motor.

Conventionally, a device using a coil substrate as an electric motor has been proposed.
For example, the apparatus described in Patent Document 1 is configured as follows. That is, it consists of a disk-shaped rotor fixed to the rotating shaft and a permanent magnet fixed to the rotor whose magnetizing direction is parallel to the axis of the rotating shaft and whose magnetizing directions alternate. A field magnet having an even number of magnetic poles on the same circumference, a coil substrate for each phase forming a conductive pattern that crosses the magnetic flux generated by the field magnet when the rotor rotates, and each phase. A board for drawing wiring for pulling out each end of the conductive pattern of each coil board to the outside for all phases, and a board obtained by laminating the coil board for the number of phases and one board for drawing wiring. It is equipped with an integer set of stacked stators.

Further, conventionally, a linear motor having the structure described in Patent Document 2 has been proposed. That is, a field magnetic pole in which a plurality of permanent magnets having different polarities are alternately arranged on a field iron core at equal pitches and a field magnetic pole are arranged to face each other via a magnetic gap, and an armature core and the core are arranged. It has an armature equipped with an armature winding formed by winding a coil in a centralized manner around the teeth of the field, and one of the field magnetic pole and the armature is used as a stator and the other is used as a mover. Run.

Japanese Patent No. 6392252 Japanese Patent No. 5327701

In an electric machine having the main feature of an armature, it is necessary to further devise a configuration for generating a magnetic field in order to improve the space factor more than that of an electric wire.
An object of the present invention is to provide an electric motor capable of improving the space factor more than that of an electric wire.

The present invention completed for this purpose includes an armature that generates a magnetic field and an armature that is relatively movable with respect to the armature, and the armature is relative to the armature. A plurality of magnetic field generators arranged around each of the plurality of iron cores arranged in the moving direction, and a first magnetic field generator and a first magnetic field generator in the same phase of the plurality of magnetic field generators among the plurality of magnetic field generators. It is an electric machine having a plurality of connecting portions arranged in a direction intersecting the moving direction while connecting the two magnetic field generating portions.
Here, the plurality of connecting portions may be laminated in the protruding direction of the iron core.
Further, the magnetic field generating portion is configured by stacking a plurality of conductive flat conductive members having through holes through which the iron core is formed therein in the protruding direction for the number of the phases. The connecting portion is a conductive member which is one of the plurality of conductive members in the first magnetic field generating portion and one of the plurality of conductive members in the second magnetic field generating portion. The layer for conducting the second conductive member, which is a member, may be different for each of the plurality of phases.
Further, the first conductive member, the second conductive member, and the conductive portion for conducting the first conductive member and the second conductive member may be integrally configured.
Further, the first magnetic field generating section, the second magnetic field generating section, and the conductive section that conducts the first magnetic field generating section and the second magnetic field generating section are integrally configured. Is also good.
Further, the magnitude of the protruding direction in the first magnetic field generating portion is T, the magnitude of the protruding direction in the conductive portion is t, the magnitude of the moving direction in the first magnetic field generating portion is d, and the said. When the magnitude of the moving direction between the first magnetic field generating portion and the second magnetic field generating portion is D, and the number of current phases applied to the motor is N, T / t ≧ N and D / d ≧ N may be satisfied.
Further, the plurality of connecting portions may be arranged in an orthogonal direction orthogonal to the protruding direction of the iron core and the moving direction.
Further, the connecting portion is a straight line, a first bent portion bent in a direction orthogonal to one end of the straight portion, and the straight line so as to face the first bent portion. It has a second bent portion that is bent in a direction orthogonal to the other end portion of the shaped portion, and the magnetic field generating portion has a through hole through which the iron core is passed and the first bent portion of the connecting portion. It has a rectangular parallelepiped shape in which at least one of a first fitting portion to be fitted and a second fitting portion into which the second bending portion is fitted is formed, and the connection portion is the connection portion in the first magnetic field generation portion. The first bent portion is fitted into the first fitting portion, and the second bent portion is fitted into the second fitting portion in the second magnetic field generating portion, whereby the first magnetic field generating portion and the said It may be made conductive with the second magnetic field generation part.
Further, a plurality of the first fitting portion and the second fitting portion are formed in the magnetic field generating portion in the orthogonal direction, and the plurality of first fitting portions arranged in the orthogonal direction for each of the plurality of phases. The positions where the plurality of connecting portions are fitted may be different in the joint portion and the second fitting portion.
Further, the magnetic pole elements are provided with a plurality of magnetic pole blocks arranged in a plurality of directions in the moving direction and a plurality of magnetic pole blocks arranged in a direction intersecting the moving directions, and the armatures are arranged in a plurality of directions intersecting the moving directions. It may be provided with a plurality of iron cores that are arranged and are arranged in the moving direction by shifting the pole pitch of the magnetic pole block.
Further, the plurality of magnetic pole blocks arranged in the direction intersecting the moving direction are arranged so as to be offset in the moving direction, and the plurality of iron cores arranged in the direction intersecting the moving direction have the polar pitch. In addition, the plurality of magnetic pole blocks may be arranged so as to be offset by the amount of deviation in the moving direction.

According to the present invention, in the armature, the connecting portions connecting the first magnetic field generating portion and the second magnetic field generating portion in the same phase among the plurality of phases interfere with each other according to the number of phases. As a result, it is possible to provide an electric machine capable of improving the space factor more than the electric wire.

It is a figure which shows an example of the schematic structure of a linear motor. It is the figure which looked at the magnetic pole element in the opposite direction from the armature side. It is a perspective view which shows an example of the structure of a magnetic pole block. This is an example of a cross-sectional view in which a magnetic monopole is cut along a plane orthogonal to the width direction. It is a perspective view which shows an example of the schematic structure of the armature which concerns on 1st Embodiment. It is a perspective view which shows an example of the schematic structure of a base material. It is an exploded view which shows an example of the schematic structure of the conductive part of a pair of U phases. It is an exploded view which shows an example of the schematic structure of the conductive part of a pair of V phases. It is an exploded view which shows an example of the schematic structure of the conductive part of a pair of W phases. It is a figure which shows the direction of the electric current flowing through a conductive part, and the direction of a magnetic field. It is a figure which shows an example of the magnetic path in the width direction generated from the conductive part. It is a figure which shows an example of the magnetic path in the moving direction generated from the conductive part. It is a figure which shows an example of the configuration applied to the axial gap electric motor. It is a figure which shows an example of the configuration applied to a radial gap electric motor. It is a figure which shows an example of the conductive part which concerns on 2nd Embodiment. (A) is a figure which looked at an example of the magnetic field generation part in the opposite direction. (B) is a view of an example of a connecting portion in the width direction. This is an example of a diagram in which the conductive portion is cut along a plane orthogonal to the moving direction. It is a figure which shows an example of the conductive part of the armature which concerns on 3rd Embodiment. (A) is a cross-sectional view of the XIXa-XIXa portion of FIG. 18, (b) is a cross-sectional view of the XIXb-XIXb portion of FIG. 18, and (c) is a cross-sectional view of the XIXc-XIXc portion. .. It is a figure which shows an example of the armature which concerns on 4th Embodiment. It is a figure which shows an example of the 1st modification of an armature. It is a figure which shows an example of the 2nd modification of an armature. It is a figure which shows an example of the 3rd modification of an armature. It is a figure which shows an example of the 4th modification of an armature.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings.
<First Embodiment>
FIG. 1 is a diagram showing an example of a schematic configuration of a linear motor motor 1.
The linear motor 1 includes a magnetic monopole 10 that moves in a linear direction, and an armature 20 that is arranged so as to face the magnetic monopole 10.
In the following description, the direction in which the magnetic monopole 10 moves may be referred to as a "moving direction". Further, the direction in which the magnetic monopole 10 and the armature 20 face each other may be referred to as "opposing direction". Further, the direction orthogonal to the moving direction and the facing direction of the magnetic pole element 10 may be referred to as a "width direction".

(Monopole 10)
FIG. 2 is a view of the magnetic monopole 10 as viewed from the armature 20 side in the opposite direction.
FIG. 3 is a perspective view showing an example of the configuration of the magnetic pole block 11.
The magnetic poles 10 are one in the facing direction, two in the width direction, many in the moving direction (15 in the present embodiment), the arranged magnetic pole blocks 11, and the yoke 12 accommodating the plurality of magnetic pole blocks 11. And have.
The magnetic pole block 11 is a rectangular parallelepiped soft magnetic iron core 111, and five plate-shaped iron cores 111 are provided so as to hide each of the five surfaces other than the surface facing the armature 20 among the six surfaces of the iron core 111. It has a permanent magnet 112. Each permanent magnet 112 has a main surface 112a having substantially the same size as one surface of the opposing iron core 111. Each permanent magnet 112 is arranged with the same magnetic pole directed at the iron core 111.

One surface of the iron core 111 that is open so as to face the armature 20 is the movable armature magnetic pole 113. As will be described later, the movable magnetic pole 113 has the same magnetic pole as the magnetic pole of the main surface 112a in which each permanent magnet 112 faces the iron core 111. Further, the surface of each permanent magnet 112 facing the outside (the surface opposite to the main surface 112a) is the opposite magnetic pole of the mover magnetic pole 113.

The adjacent magnetic pole blocks 11 are arranged so that the surfaces are in contact with each other. The movable magnetic poles 113 of the two adjacent magnetic pole blocks 11 have different magnetic poles. That is, the magnetic pole blocks 11 are arranged so that the movable magnetic poles 113 are alternately inverted. Therefore, one of the contact surfaces of the two adjacent magnetic pole blocks 11 has an S pole and the other has an N pole. As a result, the two adjacent magnetic pole blocks 11 are attracted to each other by the magnetic force, so that a plurality of magnetic pole blocks 11 can be easily arranged.

The yoke 12 is a bottomed and cylindrical member having a rectangular parallelepiped concave recess. The yoke 12 is made of a soft magnetic material. The yoke 12 accommodates each magnetic pole block 11 so that the movable magnetic pole 113 is exposed to the outside and the magnetic poles other than the movable magnetic pole 113 are not exposed to the outside. As a result, a magnetic path is formed in the yoke 12.

In the magnetic pole element 10 configured as described above, the movable element magnetic pole 113 of each magnetic pole block 11 faces the armature 20 so as to be orthogonal to the facing direction, and two of the four side surfaces move in the moving direction. The remaining two sides are arranged so as to face in a direction orthogonal to the width direction. As a result, the movable element magnetic poles 113 are inverted one by one in each of the moving direction and the width direction.

FIG. 4 is an example of a cross-sectional view of the magnetic monopole 10 cut along a plane orthogonal to the width direction.
In FIG. 4, the arrow indicates the magnetization direction, and the polarity is S → N. The iron core 111 is magnetized by a permanent magnet 112 that surrounds the iron core 111. The magnetic flux generated from the permanent magnet 112 whose S pole faces the iron core 111 travels in the iron core 111. Since the permanent magnets 112 are attached to the five surfaces of the iron core 111, the magnetic fluxes emitted from each of the five permanent magnets 112 travel inside the iron core 111, and the magnetic fluxes face each other toward the armature 20. It travels in the direction and exits from the movable element magnetic pole 113 into the gap between the armature 20 and the armature 20. The magnetic flux branches radially and enters the inside of the iron core 111 from the mover magnetic pole 113 of the N pole of the adjacent magnetic pole block 11 (the yoke 12 if the adjacent magnetic flux 12 is adjacent). Magnetic fluxes from all adjacent magnetic pole blocks 11 enter the N-pole mover magnetic pole 113. Since the north pole of the permanent magnet 112 faces the iron core 111, the magnetic flux further travels inside the iron core 111, branches in both directions in the moving direction and in both directions in the width direction, and enters the permanent magnet 112. Magnetic flux advances from the permanent magnets 112 arranged on each of the five surfaces of the iron core 111 to the adjacent permanent magnets 112 (from the permanent magnets 112 adjacent to the yoke 12 to the yoke 12). Further, the magnetic flux generated from the permanent magnets 112 arranged in the opposite direction of the iron core 111 travels through the yoke 12 and enters the permanent magnets 112 arranged in the opposite direction in the adjacent magnetic pole block 11.

The movable pole 113 has the same polarity as the magnetic pole of the permanent magnet 112 facing the iron core 111 including the movable pole 113. That is, when the S pole of the permanent magnet 112 faces the iron core 111, the movable element magnetic pole 113 of the iron core 111 becomes the S pole, and when the N pole of the permanent magnet 112 faces the iron core 111, the iron core 111 The movable element magnetic pole 113 of is N pole.

(Armature 20)
FIG. 5 is a perspective view showing an example of a schematic configuration of the armature 20 according to the first embodiment.
The armature 20 has a base member 21 and a conductive portion 220 incorporated in the base member 21.
The base member 21 has a flat plate-shaped yoke portion 211 and a plurality of iron cores 212 protruding rectangular parallelepiped from the yoke portion 211. FIG. 5 shows an example in which two iron cores 212 are provided in the width direction and nine in the moving direction, but the number is not particularly limited to these.
Further, in the present embodiment, the phases are arranged so that the phase order is U phase, V phase, and W phase in order from the left end of FIG. Since the total number of iron cores 212 in the moving direction is 9, three U-phase iron cores 212, three V-phase iron cores 212, and three W-phase iron cores 212 are provided. The phase order is V phase, W phase, U phase order, W phase, U phase, V phase order, W phase, V phase, U phase order, V phase, U phase, W phase order. The order may be U-phase, W-phase, and V-phase.

The conductive portion 220 has a pair of a U-phase conductive portion 220u, a V-phase conductive portion 220v, and a W-phase conductive portion 220w, respectively. The pair of U-phase conductive portions 220u, the pair of V-phase conductive portions 220v, and the pair of W-phase conductive portions 220w are line-symmetrical in the width direction, respectively. In FIG. 5, of the pair of U-phase conductive portions 220u, the pair of V-phase conductive portions 220v, and the pair of W-phase conductive portions 220w, one of the U-phase conductive portions 220u and the V-phase conductive portion 220v. , W phase conductive portion 220w is shown.

The U-phase conductive portion 220u is arranged around the iron core 212 and connects a magnetic field generating portion 221u that generates a magnetic field by flowing a current, and a connecting portion 222u that connects the adjacent magnetic field generating portion 221u and the magnetic field generating portion 221u. And have.
The V-phase conductive portion 220v is arranged around the iron core 212 and connects the magnetic field generating portion 221v that generates a magnetic field by flowing a current, and the adjacent magnetic field generating portion 221v and the magnetic field generating portion 221v. And have.
The W-phase conductive portion 220w is arranged around the iron core 212 and connects the magnetic field generating portion 221w that generates a magnetic field by flowing a current, and the adjacent magnetic field generating portion 221w and the magnetic field generating portion 221w. And have.
In the following description, the magnetic field generating unit 221u, the magnetic field generating unit 221v, and the magnetic field generating unit 221w may be collectively referred to as the "magnetic field generating unit 221". Further, the connection unit 222u, the connection unit 222v, and the connection unit 222w may be collectively referred to as "connection unit 222".

FIG. 6 is a perspective view showing an example of the schematic configuration of the base material 30.
The conductive portion 220 is configured by laminating a base material 30 which is a conductive flat plate-shaped member. In FIG. 6, the thickness of the base material 30 is omitted.
The base material 30 has a first base material 31 and a second base material 32. It can be exemplified that the material of the base material 30 is copper.

The first base material 31 is a conductive flat plate having a rectangular outer shape and a rectangular through hole 311 formed inside, and communicates the outside and the through hole 311 at the center of the short side. Hole 312 is formed. The through hole 311 is formed slightly larger than the outer shape of the iron core 212. For example, the gap between the surface of the through hole 311 and the outer surface of the iron core 212 is formed to be 1 mm.

The second base material 32 has a plurality of base portions 321 having the same shape as the first base material 31, and also has a plurality of conduction portions 322 for conducting the adjacent base portions 321 to each other. In the present embodiment, since the base member 21 has three iron cores 212 for each phase, the second base material 32 has three base portions 321 and two conduction portions 322. ing.

The conductive portion 220 is configured by laminating two first base materials 31 and one second base material 32. The U-phase conductive portion 220u, the V-phase conductive portion 220v, and the W-phase conductive portion 220w have different layers on which the second base material 32 is laminated. The following will be described in more detail.

FIG. 7 is an exploded view showing an example of a schematic configuration of a pair of U-phase conductive portions 220u.
FIG. 8 is an exploded view showing an example of a schematic configuration of a pair of V-phase conductive portions 220v.
FIG. 9 is an exploded view showing an example of a schematic configuration of a pair of W-phase conductive portions 220w.
In the U-phase conductive portion 220u, the second base material 32 is arranged on the first layer (hereinafter, may be referred to as “first layer”) closest to the yoke portion 211 of the base member 21, and the second base material 32 is arranged. The first base material 31 is arranged on the third layer (hereinafter, may be referred to as “second layer”) and the third layer (hereinafter, may be referred to as “third layer”).

In the V-phase conductive portion 220v, the first base material 31 is arranged on the first layer, the second base material 32 is arranged on the second layer, and the first base material 31 is arranged on the third layer.
In the W phase conductive portion 220w, the first base material 31 is arranged on the first layer and the second layer, and the second base material 32 is arranged on the third layer.

That is, the U-phase conductive portion 220u is composed of a magnetic field generating portion 221u formed by stacking three base materials 30 and a conductive portion 322 of the second base material 32 arranged in the first layer. It has a connection portion 222u and.
The V-phase conductive portion 220v is a connecting portion composed of a magnetic field generating portion 221v formed by stacking three base materials 30 and a conductive portion 322 of the second base material 32 arranged in the second layer. It has 222v.
The W-phase conductive portion 220w is a connecting portion composed of a magnetic field generating portion 221w formed by stacking three base materials 30 and a conductive portion 322 of the second base material 32 arranged in the third layer. It has 222w and.

At the site where three base materials 30 are laminated, the laminated base material 30 and the base material 30 are conductive. It can be exemplified that the method of conducting conduction is to attach a tape to the base material 30, apply a conductive paste, apply solder plating, or the like.
Further, after the two first base materials 31 and the one second base material 32 are laminated, insulation treatment is performed. The insulation treatment can be exemplified by immersing the two first base materials 31 and the one second base material 32 in a laminated state in a solution for insulation. Insulate everything except the part where the power is input.

When assembling the U-phase conductive portion 220u, the V-phase conductive portion 220v, and the W-phase conductive portion 220w to the base member 21, the connecting portion 222u is first arranged on the first layer. Assemble the U-phase conductive portion 220u. After that, it is preferable to assemble the V-phase conductive portion 220v in which the connecting portion 222v is arranged on the second layer, and finally to assemble the W-phase conductive portion 220w in which the connecting portion 222w is arranged on the third layer. .. As a result, the connection portion 222u of the U-phase conductive portion 220u, the connection portion 222v of the V-phase conductive portion 220v, and the connection portion 222w of the W-phase conductive portion 220w are laminated in this order from the yoke portion 211 side of the base member 21. ..

Although not shown in FIGS. 1, 5 and 9, a pair of U-phase conductive portions 220u, a pair of V-phase conductive portions 220v, and a pair of W-phase conductive portions 220w are configured. Both ends of the two base materials 32 in the moving direction are connected to a power source. As the connection mode, it can be exemplified that both ends of the second base material 32 in the moving direction and the power supply are connected by electric wires. Further, for example, when viewed in the directions shown in FIGS. 7 to 9, the protruding portion protruding further to the left from the uppermost portion of the base portion 321 at the left end in the moving direction of the second base material 32 is the second base material. It may be integrally formed on the 32 (formed in a flat plate shape), and the protruding portion and the power supply may be connected by an electric wire. Similarly, when viewed in the directions shown in FIGS. 7 to 9, the protruding portion protruding to the right from the uppermost portion of the base portion 321 at the right end in the moving direction of the second base material 32 is the second base material 32. It may be integrally formed (formed in a flat plate shape), and the protruding portion and the power supply may be connected by an electric wire.

(Action)
The linear motor 1 configured as described above operates as follows.
FIG. 10 is a diagram showing the direction of the current flowing through the conductive portion 220 and the direction of the magnetic field. FIG. 10 is a view of the conductive portion 220 as viewed from the magnetic monopole 10 side in the facing direction.
FIG. 11 is a diagram showing an example of a magnetic path in the width direction generated from the conductive portion 220.
FIG. 12 is a diagram showing an example of a magnetic path in the moving direction generated from the conductive portion 220.
The direction and timing of the current flowing through the U-phase conductive portion 220u, the V-phase conductive portion 220v, and the W-phase conductive portion 220w are controlled according to the moving direction and moving speed required for the magnetic pole element 10. As shown in FIG. 10, a current in the same direction is passed through the pair of conductive portions 220 (for example, the pair of U-phase conductive portions 220u).

For example, as shown in FIG. 10, a current is passed through a pair of U-phase conductive portions 220u from left to right. As a result, as shown in FIG. 11, magnetic paths are formed in opposite directions in the adjacent iron cores 212 in which the magnetic field generation portions 221u of the pair of U-phase conductive portions 220u are arranged. As a result, a magnetic path passing through these iron cores 212 and the yoke portion 211 is formed. At this time, the surface of the iron core 212 facing the magnetic monopole 10 becomes a magnetic pole (armature magnetic pole 213). Of the two iron cores 212 adjacent to each other in the width direction, the armature magnetic pole 213 of one iron core 212 is the S pole, and the armature magnetic pole 213 of the other iron core 212 is the N pole.

FIG. 12 shows a diagram when a current in the opposite direction shown in FIG. 10 is passed through the U-phase conductive portion 220u and the V-phase conductive portion 220v. In the adjacent iron cores 212, the iron core 212 in which the magnetic field generating portion 221u of the U-phase conductive portion 220u is arranged and the iron core 212 in which the magnetic field generating portion 221v of the V-phase conductive portion 220v is arranged are opposite to each other. A magnetic path is formed in. As a result, a magnetic path passing through these iron cores 212 and the yoke portion 211 is formed. Of the two iron cores 212 adjacent to each other in the moving direction, the armature magnetic pole 213 of one iron core 212 becomes the S pole, and the armature magnetic pole 213 of the other iron core 212 becomes the N pole.

Therefore, when a current flows through the conductive portion 220, the armature magnetic pole 213 and the movable element magnetic pole 113 are attracted or repelled by the magnetic force.
FIG. 12 shows a magnetic path when the armature magnetic pole 213 and the movable element magnetic pole 113 are attracted to each other.
The direction and timing of the current flowing through the U-phase conductive portion 220u, the V-phase conductive portion 220v, and the W-phase conductive portion 220w are controlled to control the moving direction and moving speed of the magnetic monopole 10. To.

The linear motor 1 configured as described above includes a magnetic monopole 10 as an example of a movable movable portion, and an armature 20 that faces the magnetic monopole 10 and generates a magnetic field. The armature 20 has a plurality of magnetic field generating units 221 arranged around each of the plurality of iron cores 212 arranged in the moving direction of the magnetic poles 10, and a plurality of phases among the plurality of magnetic field generating units 221. (For example, U phase, V phase, W phase) with the first magnetic field generation unit 221 (for example, magnetic field generation unit 221u) and the second magnetic field generation unit 221 (for example, magnetic field generation unit 221u) in the same phase. A plurality of connecting portions 222, which are arranged in a direction intersecting with the moving direction. The connecting portions 222u, the connecting portion 222v, and the connecting portion 222w, which are a plurality of connecting portions 222, are laminated in the facing direction which is the protruding direction of the iron core 212. With such a configuration, a plurality of connecting portions 222 can be provided without interfering with each other. This makes it possible to form the conductive portion 220 by laminating the conductive flat plate-shaped base material 30 in order to eliminate the need for the coil winding process and to improve the space factor as compared with the electric wire. ..

In the magnetic field generation unit 221, the base material 30 as an example of a conductive flat conductive member having a through hole 311 through which the iron core 212 is passed is laminated in the protruding direction of the iron core 212 by the number of phases. Consists of. The plurality of connecting portions 222 are the base portion 321 of the second substrate 32 as an example of the first conductive member which is one of the plurality of substrate 30s in the first magnetic field generating portion 221 and the second. The layer for conducting the base portion 321 of the second base material 32 as an example of the second conductive member, which is one of the conductive members of the plurality of base materials 30 in the magnetic field generation unit 221 is a plurality of phases (for example, U phase, V phase, W phase) are different for each. By laminating the flat plate-shaped base material 30 to form the magnetic field generating portion 221, the coil winding process can be eliminated and the space factor can be improved as compared with the electric wire. Then, the armature 20 can be simply configured by making the layers for conducting the adjacent magnetic field generation units 221 of the same phase different for each of the plurality of phases.

The base portion 321 constituting a part of the first magnetic field generating portion 221, the base portion 321 forming a part of the second magnetic field generating portion 221 adjacent to the first magnetic field generating portion 221, and the conductive portion 322 are It is configured integrally. As a result, the conductive portion 220 can be manufactured by laminating the first base material 31 and the second base material 32. Therefore, for example, after the magnetic field generation unit 221 is formed only by the first base material 31. It can be manufactured more easily than a configuration in which adjacent magnetic field generating portions 221 are electrically connected to each other by an electric wire or the like.

However, the conductive portion 220 may be made of, for example, the magnetic field generating portion 221 only by the first base material 31, and then the adjacent magnetic field generating portions 221 may be electrically conducted with each other by an electric wire or the like. In such a configuration, it is not necessary to use two types of base materials 30 of the first base material 31 and the second base material 32, so that it is possible to facilitate component management.

In the conductive portion 220 according to the above-described embodiment, the connecting portion 222u of the U-phase conductive portion 220u is the first layer, the connecting portion 222v of the V-phase conductive portion 220v is the second layer, and the W-phase conductive portion 220w. The connecting portion 222w of the above is provided in the third layer, but the present invention is not particularly limited to this aspect. The connecting portion 222v of the conductive portion 220v of the V phase may be the first layer, the connecting portion 222w of the conductive portion 220w of the W phase may be the second layer, and the connecting portion 222u of the conductive portion 220u of the U phase may be the third layer. Further, even if the connecting portion 222w of the conductive portion 220w of the W phase is the first layer, the connecting portion 222u of the conductive portion 220u of the U phase is the second layer, and the connecting portion 222v of the conductive portion 220v of the V phase is the third layer. good. Further, it may be in the order of other layers.

Further, the conductive portion 220 is configured by laminating two first base materials 31 and one second base material 32. The thicknesses of the first base material 31 and the second base material 32 are not particularly limited. Further, although one base material 30 (first base material 31 or second base material 32) constitutes one layer, a plurality of base materials 30 may form one layer. For example, as the U-phase conductive portion 220u, the first layer is composed of five second base materials 32, the second layer is formed of five first base materials 31, and the five first base materials 31 are formed. The third layer may be formed.

Further, in the first embodiment described above, the conductive portion 220 is applied to a so-called single-sided type linear motor motor 1 in which one armature 20 faces one side of the movable magnetic pole element 10. However, the conductive portion 220 may be applied to a so-called double-sided type linear motor in which armatures 20 face each other on both sides of the magnetic pole 10.

Further, in the above-mentioned first embodiment, the magnetic monopole 10 is movable with respect to the armature 20, but the embodiment is not particularly limited. The armature 20 may be movable with respect to the magnetic monopole 10. That is, in the linear motor 1, the magnetic pole element 10 and the armature 20 may be relatively movable.

Further, in the first embodiment described above, the configuration of the conductive portion 220 in which the base material 30 which is a conductive flat plate-shaped member is laminated is applied to the linear motor motor 1, but other than the linear motor motor 1. Further, for example, it may be applied to an axial gap motor or a radial gap motor.

FIG. 13 is a diagram showing an example of a configuration applied to an axial gap motor. FIG. 13 is a view seen from the side of the magnetic pole 10 arranged facing the armature 23 in the axial direction of the rotating shaft.
FIG. 13 shows an example applied to an axial gap motor having 3 slots and 4 poles.
The armature 23 has a base member 24 and a conductive portion 320 incorporated in the base member 24.
The base member 24 has a yoke portion 241 and a plurality of iron cores 242 projecting in a columnar shape from the yoke portion 241. FIG. 13 shows an example in which one iron core 242 is provided in the radial direction and twelve in the circumferential direction, but the number is not particularly limited to these.
In the example shown in FIG. 13, the U phase, the V phase, and the W phase are arranged in order in the clockwise direction. Since the number of iron cores 242 in the circumferential direction is 12 in total, four U-phase iron cores 242, four V-phase iron cores 242, and four W-phase iron cores 242 are provided. The phase order is V phase, W phase, U phase order, W phase, U phase, V phase order, W phase, V phase, U phase order, V phase, U phase, W phase order. The order may be U-phase, W-phase, and V-phase. Further, the shape of the iron core 242 may be a square columnar column or a triangular columnar column.

The conductive portion 320 is configured by laminating a base material 40 which is a conductive flat plate-shaped member.
The base material 40 has a first base material 41 and a second base material 42. It can be exemplified that the material of the base material 40 is copper.
The first base material 41 is a conductive flat plate having a circular outer shape and a circular through hole 411 formed inside, and a communication hole 412 for communicating the outside and the through hole 411 is formed. .. The through hole 411 is formed slightly larger than the outer shape of the iron core 242. For example, the gap between the inner peripheral surface of the through hole 411 and the outer peripheral surface of the iron core 242 is formed to be 1 mm.

The second base material 42 has a plurality of base portions 461 having the same shape as the first base material 41, and also has a plurality of conduction portions 462 that conduct the adjacent base portions 461 to each other. Further, the second base material 42 includes a first connection end portion 463 that connects one end portion of one base portion 461 of the plurality of base portions 461 to a power source, and another base portion 461 of the plurality of base portions 461. It has a second connection end 464 that connects the other end of the power supply to the power supply. In the example shown in FIG. 13, since the base member 24 has four iron cores 242 in each phase, the second base material 42 has four base portions 461 and three conduction portions 462. It has one first connection end 463 and one second connection end 464.

The conductive portion 320 is configured by laminating two first base materials 41 and one second base material 42. The U-phase conductive portion 320u, the V-phase conductive portion 320v, and the W-phase conductive portion 320w have different layers on which the second base material 42 is laminated. Since this configuration is the same as that of the conductive portion 220, detailed description thereof will be omitted.

FIG. 14 is a diagram showing an example of a configuration applied to a radial gap motor. FIG. 14 is a view seen in the axial direction of the rotation axis. FIG. 14 shows an example applied to a 3-slot 4-pole radial gap motor.
In the radial gap electric machine, if the shape of the armature 26 corresponding to the armature 20 in the circumferential direction is expanded, the shape becomes the same as that of the armature 20 described with reference to FIGS. 5 to 9, so detailed explanation is omitted. The differences will be explained.

The armature 26 has a base member 27 and a conductive portion 340 incorporated in the base member 27.
The base member 27 has a cylindrical yoke portion 271 and a plurality of iron cores 272 protruding rectangular parallelepiped from the yoke portion 271. Two iron cores 272 are provided in the axial direction and twelve in the circumferential direction. However, the number of iron cores 272 is not particularly limited to these numbers.
In the example shown in FIG. 14, the U phase, the V phase, and the W phase are arranged in order in the clockwise direction. Since the number of iron cores 272 in the circumferential direction is 12 in total, four U-phase iron cores 272, four V-phase iron cores 272, and four W-phase iron cores 272 are provided. The phase order is V phase, W phase, U phase order, W phase, U phase, V phase order, W phase, V phase, U phase order, V phase, U phase, W phase order. The order may be U-phase, W-phase, and V-phase.

The conductive portion 340 is configured by laminating a base material 50 which is a conductive flat plate-shaped member.
The base material 50 has a first base material 51 similar to the first base material 31 and a second base material 52 similar to the second base material 32. The second base material 52 has a plurality of base portions 521 having the same shape as the first base material 51, and also has a plurality of conduction portions 522 for conducting the adjacent base portions 521 to each other. Further, the second base material 52 includes a first connection end portion 523 that connects one end portion of one base portion 521 of the plurality of base portions 521 to a power source, and another base portion 521 of the plurality of base portions 521. It has a second connection end 524 that connects the other end of the power supply to the power supply. In the example shown in FIG. 14, since the base member 27 has four iron cores 272 in each phase, the second base material 52 has four base portions 521 and three conductive portions 522. It has one first connection end 523 and one second connection end 524. As shown in FIG. 14, the conductive portion 522 is different from the conductive portion 322 in that it is curved in an arc shape. In FIG. 14, the conductive portion 522 of the second base material 52 of the conductive portion 340 of the V phase and the W phase is omitted in the U phase column, and the U phase and W are shown in the V phase column. The conductive portion 522 of the second base material 52 of the conductive portion 340 of the phase is omitted, and the conductive portion 522 of the second base material 52 of the conductive portion 340 of the U phase and the V phase is omitted in the W phase column. Is shown.

<Second embodiment>
FIG. 15 is a diagram showing an example of the conductive portion 420 according to the second embodiment.
The conductive portion 420 according to the second embodiment is different from the conductive portion 220 according to the first embodiment in that the connecting portions 422 corresponding to the connecting portions 222 are arranged in the width direction. Hereinafter, the points different from the first embodiment will be described. In the first embodiment and the second embodiment, the same reference numerals are used for the same ones, and detailed description thereof will be omitted.

The U-phase conductive portion 420u is arranged around the iron core 212 and connects a magnetic field generating portion 421u that generates a magnetic field by flowing a current, and a connecting portion 422u that connects the adjacent magnetic field generating portion 421u and the magnetic field generating portion 421u. And have.
Similarly, the V-phase conductive portion 420v has a magnetic field generating portion 421v and a connecting portion 422v. Further, the W-phase conductive portion 420w has a magnetic field generating portion 421w and a connecting portion 422w.
The conductive portion 420 has a pair of a U-phase conductive portion 420u, a V-phase conductive portion 420v, and a W-phase conductive portion 420w, respectively. The pair of U-phase conductive portions 420u, the pair of V-phase conductive portions 420v, and the pair of W-phase conductive portions 420w are line-symmetrical in the width direction, respectively. In FIG. 15, of the pair of U-phase conductive portions 420u, the pair of V-phase conductive portions 420v, and the pair of W-phase conductive portions 420w, one of the U-phase conductive portions 420u and the V-phase conductive portion 420v. , W phase conductive portion 420w is shown.

In the following description, the magnetic field generating unit 421u, the magnetic field generating unit 421v, and the magnetic field generating unit 421w may be collectively referred to as the "magnetic field generating unit 421". Further, the connection unit 422u, the connection unit 422v, and the connection unit 422w may be collectively referred to as "connection unit 422".

FIG. 16A is a view of an example of the magnetic field generation unit 421 viewed in the opposite direction. FIG. 16B is a view showing an example of the connection portion 422 in the width direction.
FIG. 17 is an example of a diagram in which the conductive portion 420 is cut along a plane orthogonal to the moving direction.
The magnetic field generating portion 421 has a rectangular parallelepiped outer shape, and a rectangular parallelepiped through hole 431 is formed inside. Further, in the magnetic field generating portion 421, a communication hole 432 that communicates the outside and the through hole 431 is formed in the central portion of the short side. The through hole 431 is formed slightly larger than the outer shape of the iron core 212. For example, the gap between the surface of the through hole 431 and the outer surface of the iron core 212 is formed to be 0.1 mm. However, it may be formed so that the surface of the through hole 431 and the outer surface of the iron core 212 are in contact with each other.

Further, in the magnetic field generation portion 421, a first insertion hole 433 into which the first bending portion 441 of the connection portion 422, which will be described later, is inserted, and a second bending portion, which will be described later, of the connection portion 422, respectively, on both sides of the communication hole 432. A second insertion hole 434 into which the 442 is inserted is formed. Three first insertion holes 433 and three second insertion holes 434 are formed in the width direction.
It can be exemplified that the magnetic field generation unit 421 is made of copper.

The connecting portion 422 is linear so as to face the linear linear portion 440, the first bent portion 441 bent in the direction orthogonal to one end of the linear portion 440, and the first bent portion 441. It has a second bent portion 442 that is bent in a direction orthogonal to the other end portion of the portion 440. The cross-sectional shape of the connecting portion 422 is rectangular. It can be exemplified that the connection portion 422 is made of copper.

As shown in FIG. 15, the U-phase conductive portion 420u has the outermost first insertion hole 433 in one magnetic field generating portion 421u and the outermost second insertion hole 434 in the other magnetic field generating portion 421u. The first bent portion 441 and the second bent portion 442 of the connecting portion 422u are inserted, respectively.
The V-phase conductive portion 420v has the first bending of the connecting portion 422v into the central first insertion hole 433 in one magnetic field generating portion 421v and the central second insertion hole 434 in the other magnetic field generating portion 421v, respectively. The portion 441 and the second bent portion 442 are inserted.
The W-phase conductive portion 420w is the innermost (through hole 431 side) first insertion hole 433 in one magnetic field generating portion 421w and the innermost (through hole 431 side) second insertion in the other magnetic field generating portion 421w. The holes 434 are configured by inserting the first bent portion 441 and the second bent portion 442 of the connecting portion 422w, respectively.

As a result, the plurality of connecting portions 422 are arranged in the orthogonal direction orthogonal to the protruding direction (opposing direction) and the moving direction of the iron core 212. As described above, since the connecting portion 422u, the connecting portion 422v and the connecting portion 422w are provided at different positions in the width direction, interference between the connecting portion 422u, the connecting portion 422v and the connecting portion 422w is suppressed.

As described above, in the conductive portion 420 according to the second embodiment, the magnetic field generating portion 421 is the first in which the through hole 431 through which the iron core 212 is passed and the first bent portion 441 of the connecting portion 422 are fitted. It has a rectangular parallelepiped shape in which at least one of a first insertion hole 433 as an example of a fitting portion and a second insertion hole 434 as an example of a second fitting portion into which a second bent portion 442 is fitted is formed. Then, in the connecting portion 422, the first bending portion 441 is fitted into the first insertion hole 433 in the first magnetic field generating portion 421, and the second in the second magnetic field generating portion 421 adjacent to the first magnetic field generating portion 421. By fitting the second bent portion 442 into the insertion hole 434, the first magnetic field generating portion 421 and the second magnetic field generating portion 421 are made conductive.

As a result, the same magnetic field generating unit 421u, magnetic field generating unit 421v, and magnetic field generating unit 421w can be used. Further, the same connection portion 422u, connection portion 422v and connection portion 422w can be used.
Further, since the magnetic field generation unit 421 has a rectangular cross-sectional shape cut along a plane orthogonal to the direction in which the current flows, the space factor can be increased as compared with the case where the magnetic field generation unit 421 is configured by winding an electric wire, for example. Further, when assembling, since the magnetic field generating portion 421 is simply fitted into the iron core 212, it is possible to eliminate the need to wind the electric wire.

A plurality of first insertion holes 433 and second insertion holes 434 (three in this embodiment) are formed in the magnetic field generation unit 421 in the width direction, and each of the plurality of phases (for example, U phase, V phase, W phase) is formed. In the position where a plurality of connection portions (in this embodiment, the connection portion 422u, the connection portion 422v, and the connection portion 422w) are fitted among the plurality of first insertion holes 433 and the second insertion holes 434 arranged in the width direction. Is different. As a result, the connection portion 422u, the connection portion 422v, and the connection portion 422w can be prevented from interfering with each other with high accuracy.

In the conductive portion 420 according to the above-described embodiment, the connecting portion 422u of the conductive portion 420u of the U phase, the connecting portion 422v of the conductive portion 420v of the V phase, and the conductive portion of the W phase from the outside to the inside in the width direction. The connection portions 422w of 420w are arranged in order, but the present invention is not particularly limited. The order may be the connection portion 422v of the conductive portion 420v of the V phase, the connection portion 422w of the conductive portion 420w of the W phase, and the connection portion 422u of the conductive portion 420u of the U phase, or the connection portion of the conductive portion 420w of the W phase. The order may be 422w, the connection portion 422u of the U-phase conductive portion 420u, and the connection portion 422v of the V-phase conductive portion 420v. In addition, the order may be other than that.

Further, in the conductive portion 420 according to the above-described embodiment, the first insertion hole 433 and the second insertion hole 434 into which the connection portion 422u, the connection portion 422v, and the connection portion 422w are fitted are through holes, but in particular. It is not limited to such an embodiment. A recess may be formed so that the connection portion 422u, the connection portion 422v, and the connection portion 422w can be fitted by a predetermined length.
Further, the magnetic field generating portion 421 is formed into a rectangular parallelepiped shape, but the present invention is not particularly limited to this aspect. For example, the magnetic field generation unit 421 may be configured by laminating a plurality of conductive flat plate-shaped members.

Further, the first bent portion 441 and the second bent portion 442 of the connecting portion 422 according to the above-described embodiment are bent in a direction orthogonal to the end portion of the linear portion 440, but the present invention is not particularly limited. The first bent portion 441 and the second bent portion 442 are fitted into the first insertion hole 433 and the second insertion hole 434 formed in the magnetic field generating portion 421, respectively, thereby conducting the adjacent magnetic field generating portions 421 to each other. If possible, the angle with respect to the linear portion 440 is not limited to orthogonality. Further, the shapes of the first bent portion 441 and the second bent portion 442 are not limited to a linear shape, and may be entirely or partially curved.

Further, the above-mentioned conductive portion 420 may be applied to a so-called double-sided type linear motor motor, or may be applied to an axial gap motor or a radial gap motor.

<Third embodiment>
FIG. 18 is a diagram showing an example of the conductive portion 620 of the armature 60 according to the third embodiment.
The conductive portion 620 according to the third embodiment is different from the conductive portion 220 according to the first embodiment in that the magnetic field generating portion 221 and the connecting portion 222 are integrally molded. Hereinafter, the points different from the first embodiment will be described. In the first embodiment and the third embodiment, the same reference numerals are used for the same ones, and detailed description thereof will be omitted.

The U-phase conductive portion 620u has a magnetic field generating portion 621u corresponding to the magnetic field generating portion 221u and a connecting portion 622u corresponding to the connecting portion 222u.
The V-phase conductive portion 620v has a magnetic field generating portion 621v corresponding to the magnetic field generating portion 221v and a connecting portion 622v corresponding to the connecting portion 222v.
The W-phase conductive portion 620w has a magnetic field generating portion 621w corresponding to the magnetic field generating portion 221w and a connecting portion 622w corresponding to the connecting portion 222w.

In the following description, the conductive portion 620u, the conductive portion 620v, and the conductive portion 620w may be collectively referred to as "conductive portion 620". Further, the magnetic field generating unit 621u, the magnetic field generating unit 621v, and the magnetic field generating unit 621w may be collectively referred to as the "magnetic field generating unit 621". Further, the connection unit 622u, the connection unit 622v, and the connection unit 622w may be collectively referred to as "connection unit 622".

The U-phase conductive portion 620u, the V-phase conductive portion 620v, and the W-phase conductive portion 620w have the same shape as the magnetic field generating portion 621u, the magnetic field generating portion 621v, and the magnetic field generating portion 621w, and the connecting portion 622u and the connecting portion 622v. The difference is that the connecting portions 622w are displaced from each other in the protruding direction (opposing direction) of the iron core 212.

19 (a) is a cross-sectional view of the XIXa-XIXa portion of FIG. 18, FIG. 19 (b) is a cross-sectional view of the XIXb-XIXb portion of FIG. It is sectional drawing of a part.
As shown in FIG. 19, the connecting portion 622u is arranged at the position closest to the yoke portion 211 of the base member 21, the connecting portion 622w is arranged at the position farthest from the yoke portion 211, and the connecting portion 622v is arranged at the central portion. As described above, the U-phase conductive portion 620u, the V-phase conductive portion 620v, and the W-phase conductive portion 620w are molded.

The U-phase conductive portion 620u, the V-phase conductive portion 620v, and the W-phase conductive portion 620w are each formed by punching a conductive plate (for example, a deformed strip) having a thickness difference depending on the location. It can be exemplified.
When the plate thickness of the connection portion 622u, the connection portion 622v and the connection portion 622w is t, and the plate thickness of the magnetic field generation unit 621u, the magnetic field generation unit 621v and the magnetic field generation unit 621w is T, the case is a three-phase alternating current motor. Is set to T / t ≧ 3. That is, T / t is set to be equal to or greater than the number of phases of the applied current.

Further, the magnitude of the magnetic field generating unit 621 (for example, the magnetic field generating unit 621u) in the moving direction is d (see FIG. 18), and the pitch between adjacent magnetic field generating units 621 (for example, the magnetic field generating unit 621u) in the moving direction is D (FIG. 18). 18), and in the case of a three-phase AC motor, D / d ≧ 3 is set. That is, the D / d is set to be equal to or greater than the number of phases of the applied current.
The method for manufacturing the U-phase conductive portion 620u, the V-phase conductive portion 620v, and the W-phase conductive portion 620w is not limited, and may be formed by cutting.

When assembling the U-phase conductive portion 620u, the V-phase conductive portion 620v, and the W-phase conductive portion 620w to the base member 21, first, the U-phase conductive portion 620u is assembled, and then V. It is preferable to assemble the conductive portion 620v of the phase and finally to assemble the conductive portion 620w of the W phase. As a result, the connection portion 622u of the U-phase conductive portion 620u, the connection portion 622v of the V-phase conductive portion 620v, and the connection portion 622w of the W-phase conductive portion 620w are laminated in this order from the yoke portion 211 side of the base member 21. ..

In the conductive portion 620 configured as described above, the first magnetic field generating section 621 (for example, the magnetic field generating section 621u), the second magnetic field generating section 621 (for example, the magnetic field generating section 621u), and the first magnetic field generating section 621u. The connection unit 622 (for example, the connection unit 622u) as an example of the conduction unit that conducts the magnetic field generation unit 621 and the second magnetic field generation unit 621 is integrally configured. Therefore, the conductive portion 620 can be easily assembled.
In the third embodiment described above, an example is shown in which the conductive portion 620 in which the magnetic field generating portion 621 and the connecting portion 622 are integrally formed is applied to a linear motor, but in addition, an axial gap motor is shown. It may be applied to a radial gap motor or a radial gap motor.

Further, in the third embodiment described above, an example is shown in which the conductive portion 620 in which the magnetic field generating portion 621 and the connecting portion 622 are integrally formed is applied to a three-phase motor, and in particular, the three-phase is shown. Not limited to. For example, it may be applied to a two-phase motor. When applied to a two-phase motor, a conductive portion having the same shape as the U-phase conductive portion 620u and a conductive portion having the same shape as the W-phase conductive portion 620w may be laminated. Further, in such a case, when the plate thickness of the connecting portion 622 is t and the plate thickness of the magnetic field generating portion 621 is T, it is preferable to set T / t ≧ 2. Further, when the magnitude of the magnetic field generating unit 621 in the moving direction is d and the pitch of the adjacent magnetic field generating units 621 in the same phase in the moving direction is D, D / d ≧ in the case of a two-phase AC motor. It is good to set it to 2.

Further, when applied to a motor having a plurality of other phases, there are two phases, a conductive portion having the same shape as the U-phase conductive portion 620u and a conductive portion having the same shape as the W-phase conductive portion 620w. It is preferable to appropriately combine the three phases of the U-phase conductive portion 620u, the V-phase conductive portion 620v, and the W-phase conductive portion 620w. For example, in the case of 5 phases, a conductive portion having the same shape as the conductive portion 620u of the U phase, a conductive portion having the same shape as the conductive portion 620w of the W phase, a conductive portion 620u of the U phase, and a conductive portion 620v of the V phase. , W phase conductive portion 620w may be combined and configured.

<Fourth Embodiment>
FIG. 20 is a diagram showing an example of the armature 70 according to the fourth embodiment.
The conductive portion 720 according to the fourth embodiment has the conductive portion 720 arranged in the upper stage and the conductive portion arranged in the lower stage in the conductive portion 720 of the same phase with respect to the conductive portion 220 according to the first embodiment. 720 is a configuration that is shifted in the moving direction by an odd multiple of the polar pitch, and the direction of the current flowing through the conductive portion 720 arranged in the upper stage and the conductive portion 720 arranged in the lower stage is opposite. Is different. Hereinafter, the points different from the first embodiment will be described. In the first embodiment and the fourth embodiment, the same reference numerals are used for the same ones, and detailed description thereof will be omitted.

More specifically, the armature 70 according to the fourth embodiment has a base member 71 and a conductive portion 720 incorporated in the base member 71.
The base member 71 has a yoke portion 711 corresponding to the yoke portion 211 and an iron core 712 corresponding to the iron core 212. The iron core 712 is provided in two stages in the width direction, and is composed of an upper core 712a which is an iron core 712 arranged in the upper stage and a lower core 712b which is an iron core 712 arranged in the lower stage. The upper core 712a and the lower core 712b are displaced from each other in the moving direction by the magnitude of the pole pitch P, in other words, the moving direction in the magnetic pole block 11.

The conductive portion 720 has a U-phase conductive portion 720u, a V-phase conductive portion 720v, and a W-phase conductive portion 720w.
The conductive portion 720 is configured by laminating a first base material 81 corresponding to the first base material 31 and a second base material 82 corresponding to the second base material 32.
In the present embodiment, the first base material 81 is the same as the first base material 31, but the second base material 82 is different from the second base material 32.
The second base material 82 has a plurality of base portions 821 having the same shape as the first base material 81, and also has a first conduction portion 822 that conducts the base portions 821 adjacent to each other in the moving direction, and a plurality of base portions arranged in the upper stage. It has a second conduction portion 823 that conducts the base portion 821 arranged at the right end of the 821 and the base portion 821 arranged at the right end of the plurality of base portions 821 arranged in the lower stage. Further, the second base material 82 is provided at the upper end portion 824 protruding to the left from the base portion 821 arranged at the left end of the plurality of base portions 821 arranged in the upper stage and at the left end of the plurality of base portions 821 arranged in the lower stage. It has a lower end portion 825 protruding to the left from the arranged base portion 821. In the present embodiment, since the base member 71 has six iron cores 712 in each phase, the second base material 82 includes six base portions 821 and four first conduction portions 822. It has one second conduction portion 823, one upper end portion 824, and one lower end portion 825.

The linear motor having the conductive portion 720 according to the fourth embodiment, which is configured as described above, operates as follows.
FIG. 20 also shows the direction of the current flowing through the conductive portion 720 and the direction of the magnetic field. FIG. 20 is a view of the conductive portion 720 as viewed from the magnetic monopole 10 side in the facing direction.
As shown in FIG. 20, a current is passed from left to right with respect to the upper end portion 824 of the U-phase conductive portion 720u. As a result, as shown in FIG. 20, a current flows from right to left in the lower end portion 825 of the U-phase conductive portion 720u. Then, in the iron core 712 in which each of the magnetic field generating portions 721u of the U-phase conductive portion 720u is arranged, magnetic paths are formed in the same direction, and the surface facing the magnetic pole 10 becomes the S pole. Further, the iron core 712 in which the upper magnetic field generating portion 721u is arranged in the U-phase conductive portion 720u and the iron core 712 in which the lower magnetic field generating portion 721u is arranged are large in the moving direction in the magnetic pole block 11. It is off by a small amount.

FIG. 20 shows a diagram in which a current in the opposite direction is passed through the U-phase conductive portion 720u and the V-phase conductive portion 720v. That is, a current is passed from left to right with respect to the lower end portion 825 of the V-phase conductive portion 720v. As a result, as shown in FIG. 20, a current flows from right to left in the upper end portion 824 of the V-phase conductive portion 720v. Then, in the iron core 712 in which each of the magnetic field generating portions 721v of the V-phase conductive portion 720v is arranged, magnetic paths are formed in the same direction, and the surface facing the magnetic pole 10 becomes the N pole. Further, the iron core 712 in which the upper magnetic field generating portion 721v is arranged in the V-phase conductive portion 720v and the iron core 712 in which the lower magnetic field generating portion 721v is arranged are large in the moving direction in the magnetic pole block 11. It is off by a small amount.

On the other hand, in the magnetic pole elements 10, the magnetic pole blocks 11 adjacent to each other in the moving direction and the width direction have different polarities from each other.
Therefore, the N-pole magnetic pole block 11 is attracted to the position facing the iron core 712 where the magnetic field generation portion 721u of the U-phase conductive portion 720u which becomes the S pole is arranged, and the V-phase conductive portion 720v which becomes the N pole The magnetic pole block 11 of the S pole is easily attracted to the position facing the iron core 712 where the magnetic field generating portion 721v is arranged.

Here, for example, in the conductive portion 220 according to the first embodiment, the rightmost conductive portion 220u in the plurality of conductive portions 220u arranged in the upper stage of the pair of U-phase conductive portions 220u and the conductive portion 220u are arranged in the lower stage. When the rightmost conductive portion 220u of the plurality of conductive portions 220u is connected and a current is passed from left to right through the upper conductive portion 220u, a current flows from right to left through the lower conductive portion 220u. Flows. In other words, a current in the opposite direction is passed through the upper conductive portion 220u and the lower conductive portion 220u. Then, in the linear motor 1, magnetic paths are formed in the same direction in the iron core 212 in which each of the magnetic field generating portions 221u of the U-phase conductive portion 220u is arranged, and the surface facing the magnetic pole 10 is the S pole. However, since the iron core 212 in which the upper magnetic field generating portion 221u is arranged and the iron core 212 in which the lower magnetic field generating portion 221u is arranged are in the same position in the moving direction, the driving force of the magnetic pole 10 cancels out. Will be done.

On the other hand, in the present embodiment, the above configuration suppresses the cancellation of the driving force of the magnetic monopole 10. Further, in the conductive portion 220 according to the first embodiment, in order to allow a current in the same direction to flow through the upper conductive portion 220u and the lower conductive portion 220u, for example, they are arranged at the right end of a plurality of base portions 321 arranged in the upper stage. The size of the second conductive portion 823 is smaller than that of the configuration in which the conductive portion 321 is provided to conduct the base portion 321 and the base portion 321 arranged at the left end of the plurality of base portions 321 arranged in the lower stage, so that the size is small. It will be possible to achieve this.

(First modification)
FIG. 21 is a diagram showing an example of a first modification of the armature 70.
The amount of displacement between the upper core 712a and the lower core 712b is the plurality of magnetic pole blocks 11 arranged in the upper stage of the plurality of magnetic pole blocks 11 arranged in two stages in the width direction, and the plurality of magnetic pole blocks 11 arranged in the lower stage. However, it may be changed according to the offset amount δ in the case of skew arrangement in order to reduce the cogging torque.

FIG. 21 shows an example when the offset amount δ is 1/2 of the pole pitch P.
When the offset amount δ is 1/2 of the pole pitch P, as shown in FIG. 21, the upper core 712a and the lower core 712b are moved in the direction of movement, where the pole pitch P + offset amount δ = pole pitch P × 3 It is good to shift by 2. As a result, the cogging torque can be reduced while increasing the driving force of the magnetic monopole 10.
When the offset amount δ is the plate thickness of the permanent magnet 112, the upper core 712a and the lower core 712b may be displaced by the pole pitch P + (plate thickness of the permanent magnet 112) in the moving direction.

(Second modification)
FIG. 22 is a diagram showing an example of a second modification of the armature 70.
On the right side of the upper iron core 712a arranged at the right end of the plurality of upper iron cores 712a arranged in the upper stage, an upper protruding portion 712c protruding from the yoke portion 711 in the same manner as the upper iron core 712a is provided. Further, on the left side of the lower iron core 712b arranged at the left end of the plurality of lower iron cores 712b arranged in the lower stage, a lower protruding portion 712d protruding from the yoke portion 711 in the same manner as the lower iron core 712b is provided.

As a result, the magnetic flux generated by the magnetic field generating portion 721w in the rightmost W phase conductive portion 720w in the upper stage passes through the yoke portion 711 and cancels out the magnetic flux generated by the magnetic field generating portion 721w in the lower rightmost W phase conductive portion 720w. It is possible to suppress the fact that it is done. Further, the magnetic flux generated by the magnetic field generating portion 721u in the U-phase conductive portion 720u at the upper left end passes through the yoke portion 711 and is canceled by the magnetic flux generated by the magnetic field generating portion 721u in the conductive portion 720u of the U phase at the lower left end. It is possible to suppress this. As a result, the driving force of the magnetic monopole 10 can be further increased.

(Third modification example)
FIG. 23 is a diagram showing an example of a third modification of the armature 70.
The difference is that the lower iron core 712b arranged at the right end of the plurality of lower iron cores 712b arranged in the lower stage is removed, and the lower iron core 712b is newly provided to the left of the lower iron core 712b arranged at the left end. Then, the magnetic field generating section 721w arranged at the right end of the lower magnetic field generating section 721w of the W phase conductive section 720w is removed, and the magnetic field generating section 721w arranged at the left end of the lower magnetic field generating section 721w is removed. A magnetic field generation unit 721w is newly provided at a position on the left corresponding to the newly provided lower iron core 712b.

As a result, the magnetic flux generated by the magnetic field generating portion 721w in the W-phase conductive portion 720w at the upper right end passes through the yoke portion 711 and is canceled by the magnetic flux generated by the magnetic field generating portion 721w in the lower W-phase conductive portion 720w. It is possible to suppress this. Further, the magnetic flux generated by the magnetic field generating portion 721u in the U-phase conductive portion 720u at the upper left end passes through the yoke portion 711 and is canceled by the magnetic flux generated by the magnetic field generating portion 721u in the lower U-phase conductive portion 720u. Can be suppressed.

(Fourth modification)
FIG. 24 is a diagram showing an example of a fourth modification of the armature 70.
In the fourth modification, the shape of the conductive portion 720 is different.
The rightmost magnetic field generating section 721 of the upper magnetic field generating sections 721 of each phase and the rightmost magnetic field generating section 721 of the lower magnetic field generating sections 721 are around the iron core 712. The difference is that the amount provided in is reduced, and the magnetic field generating unit 721 in the upper stage and the magnetic field generating unit 721 in the lower stage are connected.

More specifically, the portion of the second base material 82 that constitutes the conductive portion 720 of each phase is connected to the portion of about half the circumference of the base portion 821 at the right end of the upper stage and the portion of about half the circumference of the base portion 821 at the lower right end. As a substitute for the second conductive portion 823. Then, the first base material 81 is prevented from being laminated on the base portion 821 at the right end of the upper and lower stages.
With such a configuration, it is possible to reduce the size of the conductive portion 720.

In the conductive portion 720 and its modified example according to the fourth embodiment described with reference to FIGS. 20 to 24, the first base material 81 and the second base material 82 are laminated. Similar to the conductive portion 620 according to the third embodiment, the magnetic field generating portion 721 and the connecting portion 722 may be integrally molded. Further, the conductive portion 720 and the embodiment thereof according to the fourth embodiment may be applied to an axial gap motor or a radial gap motor.

1 ... linear motor, 10 ... magnetic pole, 11 ... magnetic pole block, 12 ... yoke, 20, 23, 26, 60, 70 ... armature, 21, 24, 27, 71 ... base member, 30, 40, 50 ... Base material, 31,41,51,81 ... 1st base material, 32,42,52,82 ... 2nd base material, 111,212,242,272,712 ... Iron core, 112 ... Permanent magnet, 113 ... Movable element Magnetic poles, 213 ... Armature magnetic poles, 220, 320, 340, 420, 620, 720 ... Conductive parts, 221, 421, 621 ... Magnetic field generation parts, 222, 422, 622 ... Connection parts

Claims (11)

An armature that generates a magnetic field and
A magnetic monopole that is relatively movable with the armature,
Equipped with
The armature has a plurality of magnetic field generators arranged around each of the plurality of iron cores arranged in a direction of relative movement with respect to the magnetic pole element, and a plurality of phases of the plurality of magnetic field generators. An electric machine having a plurality of connecting portions arranged in a direction intersecting the moving direction while connecting a first magnetic field generating portion and a second magnetic field generating portion in the same phase. The electric motor according to claim 1, wherein the plurality of connecting portions are laminated in the protruding direction of the iron core. The magnetic field generating portion is formed by laminating conductive flat-plate-shaped conductive members having through holes through which the iron core is formed therein in the protruding direction for the number of the phases.
The plurality of connecting portions are included in a first conductive member which is one of the plurality of conductive members in the first magnetic field generating portion and a plurality of the conductive members in the second magnetic field generating portion. The motor according to claim 2, wherein the layer for conducting the second conductive member, which is one conductive member, is different for each of the plurality of phases. The motor according to claim 3, wherein the first conductive member, the second conductive member, and the conductive portion that conducts the first conductive member and the second conductive member are integrally configured. A claim that the first magnetic field generating section, the second magnetic field generating section, and the conductive section that conducts the first magnetic field generating section and the second magnetic field generating section are integrally configured. The electric motor according to 3. The magnitude of the protruding direction in the first magnetic field generating portion is T, the magnitude of the protruding direction in the conducting portion is t, the magnitude of the moving direction in the first magnetic field generating portion is d, and the first. When the magnitude of the moving direction between the magnetic field generating portion and the second magnetic field generating portion is D, and the number of current phases applied to the motor is N,
The motor according to claim 5, wherein T / t ≧ N and D / d ≧ N. The electric motor according to claim 1, wherein the plurality of connecting portions are arranged in an orthogonal direction orthogonal to the protruding direction of the iron core and the moving direction. The connecting portion includes a linear linear portion, a first bent portion bent in a direction orthogonal to one end of the linear portion, and the linear portion so as to face the first bent portion. With a second bent portion that is bent in a direction orthogonal to the other end of the
The magnetic field generating portion is at least one of a through hole through which the iron core is passed, a first fitting portion into which the first bending portion of the connection portion is fitted, and a second fitting portion into which the second bending portion is fitted. It is a rectangular parallelepiped with one side formed,
In the connection portion, the first bending portion is fitted into the first fitting portion of the first magnetic field generating portion, and the second bending portion is fitted to the second fitting portion of the second magnetic field generating portion. The electric motor according to claim 7, wherein the first magnetic field generating portion and the second magnetic field generating portion are made conductive by being fitted. A plurality of the first fitting portion and the second fitting portion are formed in the magnetic field generating portion in the orthogonal direction.
The electric motor according to claim 8, wherein the positions where the plurality of connecting portions are fitted in the plurality of first fitting portions and the second fitting portions arranged in the orthogonal direction are different for each of the plurality of phases. .. The magnetic poles include a plurality of magnetic pole blocks arranged in a plurality of directions in the moving direction and arranged in a plurality of directions intersecting the moving directions.
The armatures 1 to 9 include a plurality of armatures arranged in a direction intersecting the moving direction and a plurality of iron cores arranged in the moving direction with the pole pitches of the magnetic pole blocks staggered. The electric machine according to any one of the items. A plurality of magnetic pole blocks arranged in a direction intersecting the moving direction are arranged so as to be offset in the moving direction.
The tenth aspect of the present invention, wherein the plurality of iron cores arranged in the directions intersecting the moving directions are arranged so as to be offset by the amount of deviation in the moving direction in the plurality of magnetic pole blocks in addition to the polar pitch. Electric motor.

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