JP2003032992A - Single pole linear dc motor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable magnification of a linear region of thrust of a single pole linear DC motor, increase of thrust without causing increase of thrust fluctuation, and realization of long stroke without causing increase in thrust fluctuation, by winging a plurality of stator windings which are constituted by the same winding specification of odd number of layer, around a part of a stator corresponding to the moving region of a needle. SOLUTION: The stator 1 is constituted of a first yoke 4, a second yoke 5, first permanent magnets 7a, 7b and a plurality of first stator windings 8(1)-8(n). The needle 11 is constituted of a stator winding 12, wound around the periphery of the first yoke 4 at a prescribed interval.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to generation of pulsation-free thrust, expansion of the linear region of thrust, large thrust without increase in thrust fluctuation, and long thrust without increase in thrust fluctuation.
The present invention relates to a single-pole type linear DC motor that enables a stroke.

[0002]

2. Description of the Prior Art A single-pole type linear DC motor is the only linear motor that produces thrust without pulsation. By mounting various position detection devices and performing servo control, a wide range of thrust control and speed control are possible. Enables a wide range of control and highly precise control of stop position, loads that dislike vibration, loads that dislike thrust fluctuations, loads that require operation in a wide range of speeds, loads that require high stop accuracy, and excellent response. It has been put to practical use as a drive device for a linear motion part of a load that requires stability.

14 to 17 are structural explanatory views of a typical conventional single-pole type linear DC motor. The conventional single-pole linear DC motor shown in FIG. 14 corresponds to a stroke of 20 [mm] or less, and the conventional single-pole linear DC motor shown in FIG. 15 has a stroke of about 20 [mm] to 1000 [mm]. Correspondingly, the conventional single pole type linear DC motor shown in FIG. 16 corresponds to a stroke of 40 [mm] or less.
The conventional single pole type linear DC motor shown in 7 is 20 [mm]
It corresponds to the following strokes.

The conventional single-pole type linear DC motor shown in FIGS. 14 to 17 comprises a stator 1 and a mover 11. The stator 1 is mainly composed of a magnetic path constituent member and a magnetomotive force generating member, and a part of the stator 1 constitutes a first stator constituent member 2 and a second stator constituent member 3. The first stator constituent member 2 and the second stator constituent member 3 are arranged to face each other with a predetermined distance therebetween, and their relative surfaces form a space 21. The mover 11 is mainly configured of the mover winding 12, and is arranged in a structure capable of smoothly moving in the space 21.

In the conventional single-pole type linear DC motor shown in FIG. 14, the magnetic path constituting members constituting the stator 1 are constituted by a first yoke 4 and a second yoke 5 each having a flat plate shape. The magnetomotive force generating member constituting 1 is
The magnetic pole surface having the polarity of the S pole is fixed to the end portion of the first yoke 4 in the arrow A direction, and the magnetic pole surface having the polarity of the N pole is fixed to the end portion of the second yoke 5 in the arrow A direction. A magnetic pole surface having an S pole polarity is fixed to the first permanent magnet 6a and an end portion of the first yoke 4 in the arrow B direction, and an N pole polarity is fixed to the end portion of the second yoke 5 in the arrow B direction. And a first permanent magnet 6b to which a magnetic pole surface having is fixed.

The first stator component member 2 is the first yoke 4
The second stator constituting member 3 is constituted by the second yoke 5. The mover 11 mainly includes a mover winding 12 wound around the second stator constituent member 3 with a predetermined gap.

In the conventional single-pole type linear DC motor shown in FIG. 15, the magnetic path constituting members constituting the stator 1 are flat plate-shaped first yoke 4 and second yoke 5, respectively.
And a third yoke 1 for magnetically and mechanically connecting the ends of the first yoke 4 and the second yoke 5 in the direction of arrow A.
0a and arrow B of the first yoke 4 and the second yoke 5
The magnetomotive force generating member, which is constituted by the third yoke 10b that magnetically and mechanically connects the end portions in the direction, and which constitutes the stator 1, has the magnetic pole surface having the polarity of the S pole fixed to the first yoke 4. The second permanent magnet 7 has a flat plate shape.

The first stator component member 2 is the first yoke 4
And the second permanent magnet 7, and the second stator constituting member 3 is constituted by the second yoke 5. The mover 11 mainly includes a mover winding 12 wound around the second stator constituent member 3 with a predetermined gap.

In the conventional single-pole type linear DC motor shown in FIG. 16, the magnetic path forming members forming the stator 1 are cylindrical first yoke 4 and second yoke 5, respectively.
And a third yoke 1 for magnetically and mechanically connecting the ends of the first yoke 4 and the second yoke 5 in the direction of arrow A.
The magnetomotive force generating member constituting the stator 1 is constituted by a second permanent magnet 7 having a cylindrical shape in which a magnetic pole surface having the polarity of the S pole is fixed to the second yoke 5.

The first stator component member 2 is the first yoke 4
The second stator constituent member 3 is composed of the second yoke 5 and the second permanent magnet 7. The mover 11 is mainly composed of a cylindrical mover winding 12 which is wound around the first stator constituent member 2 with a predetermined gap.

In the conventional single-pole type linear DC motor shown in FIG. 17, the magnetic path forming members constituting the stator 1 are constituted by a first yoke 4 and a second yoke 5 each having a flat plate shape. The magnetomotive force generating member constituting 1 is
A second permanent magnet 7a in the form of a flat plate in which a magnetic pole surface having the polarity of the S pole is fixed to the first yoke 4, and the first yoke 4
And a second permanent magnet 7b in the form of a flat plate to which a magnetic pole surface having N-pole polarity is fixed.

The first stator constituting member 2 is the first yoke 4
And the second permanent magnets 7a and 7b,
The stator constituent member 3 is composed of the second yoke 5. The mover 11 is mainly composed of a mover winding 12, and the mover winding 12 is composed of a flat coil having four winding sides. One winding side 14a of the flat coil faces the second permanent magnet 7a, and the other winding side 1 of the flat coil is
4b is arranged in the space 21 so as to face the second permanent magnet 7b.

In the conventional single-pole type linear DC motor shown in FIGS. 14 to 17, the mover 11 is the mover winding 1
2 by applying a predetermined current in the direction shown in FIG.
1 to 21. By moving with a predetermined thrust force based on the thrust characteristics of the thrust characteristics diagram shown in FIG. 21 in the direction of arrow B and flowing a predetermined current in the mover winding 12 in a direction different from that shown in FIG.
8 to 21. The vehicle moves in the direction of arrow A with a predetermined thrust based on the thrust characteristics of the thrust characteristic diagrams shown in FIGS.

To increase the thrust of the conventional single-pole linear DC motor shown in FIGS. 14 to 17, the magnetomotive force of the magnetomotive force generating member forming the stator 1 is increased or the mover winding forming the mover 11 is formed. This is possible by increasing the magnetomotive force of 12.

Increasing the thrust force by increasing the magnetomotive force of the magnetomotive force generating member constituting the stator 1 increases the energy product or the volume of the permanent magnets 6a, 6b, 7, 7a, 7b constituting the magnetomotive force generating member. The increase makes it possible. Increasing the magnetomotive force of the mover winding 12 constituting the mover 11 to increase the thrust causes the increase in the number of turns of the mover winding 12 or the mover winding 12
This is possible due to the increase in the current flowing through.

Increasing the thrust of the magnetomotive force generating member constituting the stator 1 by increasing the magnetomotive force increases the leakage magnetic flux, and the thrust fluctuation increases as the leakage magnetic flux increases, so that the volume of the magnetic path forming member increases. Is required, and the stator 1 and the mover 11 are both increased in size as the volume of the magnetic path forming member is increased, and the mass is increased as the size is increased, and the responsiveness is deteriorated as the mass of the mover 11 is increased. was there.

The increase in thrust due to the increase in the number of turns of the mover windings constituting the mover 11 causes the mover 11 to become large in size, and the mass increases as the size increases, and the responsiveness deteriorates as the mass increases. There was a problem.

The increase in thrust due to an increase in the current flowing through the mover winding 12 constituting the mover 11 enables increase in thrust without increasing the mass of the stator 1 and the mover 11. However, there was a problem that the thrust fluctuation increased with the increase of the current.

The conventional single-pole type linear DC motor shown in FIG. 14 has a long stroke exceeding 20 mm, and FIG.
1000 [m of the conventional single pole type linear DC motor shown in FIG.
m] longer stroke, conventional single-pole linear DC motor shown in FIG. 16 longer than 40 mm, and conventional single-pole linear DC motor shown in FIG. 17 20 mm The longer stroke exceeding the above range has drawbacks such as a reduction in thrust, an increase in size of the stator 1, an increase in size of the mover 11 and an increase in thrust force, making it difficult to put into practical use.

18 to 21 are shown in FIGS. 14 to 1.
FIG. 7 is a thrust characteristic diagram of the conventional single-pole linear DC motor shown in FIG. 7. The thrust characteristic a is that the temperature of the mover winding 12 is 20
The thrust characteristic is shown when a current rising from [° C] to 50 [° C] is continuously applied to the mover winding 12. The thrust characteristic b is that the temperature of the mover winding 12 is 80 [° C] to 100 [° C]. The thrust characteristic when the current rising to [° C.] is continuously applied to the mover winding 12 is shown. The thrust characteristic c is that the temperature of the mover winding 12 is 13
The mover winding 1 generates a current that rises from 0 [° C] to 150 [° C].
2 shows the thrust characteristics when continuously flowing.

FIG. 18 is a thrust characteristic diagram of the conventional single-pole type linear DC motor shown in FIG. 14 when the stroke is set to 100 [mm]. It shows a state in which the rate of decrease in thrust increases with increasing. Figure 20 shows 20 strokes
FIG. 15 is a thrust characteristic diagram of the conventional single-pole type linear DC motor shown in FIG. 14 when set to [mm]. The thrust decreases as the mover 11 moves, and the decrease rate of thrust increases as the current increases. It shows the state of doing.

FIG. 19 is a thrust characteristic diagram of the conventional single-pole type linear DC motor shown in FIG. 15 when the stroke is set to 20 [mm]. The thrust decreases as the mover 11 moves, and the current is reduced. It shows a state in which the rate of decrease in thrust increases with increasing.

FIG. 20 is a thrust characteristic diagram of the conventional single-pole type linear DC motor shown in FIG. 16 when the stroke is set to 20 [mm]. The thrust decreases as the mover 11 moves, and the current is reduced. It shows a state in which the rate of decrease in thrust increases with increasing.

FIG. 21 is a thrust characteristic diagram of the conventional single-pole type linear DC motor shown in FIG. 17 when the stroke is set to 6 [mm], and the linear region of the thrust decreases as the current increases. Is shown.

The thrust characteristic diagrams shown in FIGS. 18 and 20 are
The conventional single-pole type linear DC motor shown in FIG. 14 makes it difficult to increase thrust without increasing thrust fluctuation, expand linear region of thrust, and lengthen stroke without increasing thrust fluctuation. It means that.

The thrust characteristic diagram shown in FIG. 19 shows that the conventional single-pole type linear DC motor shown in FIG. 15 makes it difficult to increase the thrust without enlarging the thrust fluctuation and to expand the linear region of the thrust. The thrust characteristic diagram shown in FIG. 20 shows that the conventional single-pole linear DC motor shown in FIG. 16 makes it difficult to increase the thrust without increasing the thrust fluctuation and to expand the linear region of the thrust. The thrust characteristic diagram shown in FIG. 21 shows that it is difficult for the conventional single-pole linear DC motor shown in FIG. 17 to increase the thrust without increasing the thrust fluctuation and to expand the linear region of the thrust. Is shown.

[0027]

Problems to be solved are the expansion of the linear region of thrust, the increase in thrust without an increase in thrust fluctuation, and the long thrust without an increase in thrust fluctuation.
It is difficult to make strokes.

[0028]

Means for Solving the Problems A plurality of stator windings configured to have the same winding specifications in odd layers are provided in a part of the stator corresponding to the moving range of a mover. The most main feature is that the winding start and the winding end of the other one of the stator windings are adjacent to each other and are wound in a row.

[0029]

BEST MODE FOR CARRYING OUT THE INVENTION The purpose of the generation of pulsation-free thrust, expansion of the linear region of thrust, increase in thrust without increase in thrust fluctuation, and increase in stroke without increase in thrust fluctuation This was achieved without reducing the size and weight of the mover.

[0030]

1 to 8 are structural explanatory views of an embodiment of a single-pole type linear DC motor of the present invention, and FIGS.
FIG. 9 is a thrust characteristic diagram of the single pole type linear DC motor of the present invention shown in FIGS. 1 to 8.

The single pole type linear DC motor of the present invention shown in FIGS. 1 to 7 comprises a stator 1 and a mover 11. The stator 1 is mainly composed of a magnetic path constituent member and a magnetomotive force generating member, and a part of the stator 1 constitutes a first stator constituent member 2 and a second stator constituent member 3. First
The stator constituent member 2 and the second stator constituent member 3 are arranged so as to face each other with a predetermined distance therebetween, and their relative surfaces form a space 21. The mover 11 mainly includes the mover winding 12, and is arranged in a structure capable of smoothly moving in the space 21.

In the single pole type linear DC motor of the present invention shown in FIG. 1, the magnetic path constituting members constituting the stator 1 are constituted by a flat plate-shaped first yoke 4 and a second yoke 5, respectively, and are fixed. The magnetomotive force generating member forming the child 1 is
The magnetic pole surface having the polarity of the S pole is fixed to the end portion of the first yoke 4 in the arrow A direction, and the magnetic pole surface having the polarity of the N pole is fixed to the end portion of the second yoke 5 in the arrow A direction. A magnetic pole surface having an S pole polarity is fixed to the first permanent magnet 6a and an end portion of the first yoke 4 in the arrow B direction, and an N pole polarity is fixed to the end portion of the second yoke 5 in the arrow B direction. And a first permanent magnet 6b to which a magnetic pole surface having is fixed.

The first stator component member 2 is the first yoke 4
The second stator constituting member 3 is constituted by the second yoke 5. A plurality of first stator windings 8 (1) to 8 (1), which have the same winding specifications in odd layers, are arranged around the first stator constituent member 2 corresponding to the moving range of the mover 11. 8 (n) adjoins the winding start of one first stator winding and the winding end of the other one first stator winding,
They are lined up and wound.

The mover 11 mainly comprises a mover winding 12 wound around the second stator constituting member 3 with a predetermined gap. The mover 11 causes the mover winding 12 and the first stator windings 8 (1) to 8 (n) to flow predetermined currents in the directions shown in FIG. Space 21 with a predetermined thrust based on the thrust characteristics of the characteristic diagram
9 or by moving a predetermined current through the mover winding 12 and the first stator windings 8 (1) to 8 (n) in directions different from those shown in FIG. It moves in the direction of arrow B with a predetermined thrust based on the thrust characteristic of the thrust characteristic diagram shown in FIG.

In the single pole type linear DC motor of the present invention shown in FIG. 2, the magnetic path forming members forming the stator 1 are a first yoke 4 and a second yoke 5 each having a flat plate shape.
And a third yoke 1 for magnetically and mechanically connecting the ends of the first yoke 4 and the second yoke 5 in the direction of arrow A.
0a and arrow B of the first yoke 4 and the second yoke 5
The magnetomotive force generating member, which is constituted by the third yoke 10b that magnetically and mechanically connects the end portions in the direction, and which constitutes the stator 1, has the magnetic pole surface having the polarity of the S pole fixed to the first yoke 4. The second permanent magnet 7 has a flat plate shape.

The first stator component member 2 is the first yoke 4
And the second permanent magnet 7, and the second stator constituting member 3 is constituted by the second yoke 5. A plurality of first stator windings 8 (1) to 8 (1), which have the same winding specifications in odd layers, are arranged around the first stator constituent member 2 corresponding to the moving range of the mover 11. 8 (n) are wound in a row so that the winding start of one first stator winding and the winding end of the other first stator winding are adjacent to each other.

The mover 11 mainly comprises a mover winding 12 wound around the second stator constituting member 3 with a predetermined gap. The mover 11 causes a predetermined current to flow through the mover winding 12 and the first stator windings 8 (1) to 8 (n) in the directions shown in FIG. An arrow B is drawn in the space 21 with a predetermined thrust based on the thrust characteristics.
Moving in the direction, the mover winding 12 and the first stator winding 8
(1) to 8 (n) are moved in the direction of arrow A with a predetermined thrust force based on the thrust characteristics of the thrust characteristics diagram shown in FIG.

In the single pole type linear DC motor of the present invention shown in FIG. 3, the magnetic path constituting members constituting the stator 1 are constituted by a first yoke 4 and a second yoke 5 each having a flat plate shape and fixed. The magnetomotive force generating member forming the child 1 is
The magnetic pole surface having the polarity of the S pole is fixed to the end portion of the first yoke 4 in the arrow A direction, and the magnetic pole surface having the polarity of the N pole is fixed to the end portion of the second yoke 5 in the arrow A direction. A magnetic pole surface having an S pole polarity is fixed to the first permanent magnet 6a and an end portion of the first yoke 4 in the arrow B direction, and an N pole polarity is fixed to the end portion of the second yoke 5 in the arrow B direction. And a first permanent magnet 6b having a magnetic pole surface fixed to the first yoke 4 and a second permanent magnet 7 having a flat plate shape having a magnetic pole surface having an N-pole polarity fixed to the first yoke 4.

The first stator component member 2 is the first yoke 4
And the second permanent magnet 7, and the second stator constituting member 3 is constituted by the second yoke 5. A plurality of first stator windings 8 (1) to 8 (1), which have the same winding specifications in odd layers, are arranged around the first stator constituent member 2 corresponding to the moving range of the mover 11. 8 (n) are wound in a row so that the winding start of one first stator winding and the winding end of the other first stator winding are adjacent to each other.

The mover 11 mainly comprises a mover winding 12 wound around the second stator constituting member 3 with a predetermined gap. The mover 11 applies a predetermined current to each of the mover winding 12 and the first stator windings 8 (1) to 8 (n) in the directions shown in the drawing, so that the thrust characteristics shown in FIG. Arrow A in the space 21 with a predetermined thrust based on the thrust characteristics
Moving in the direction, the mover winding 12 and the first stator winding 8
(1) to 8 (n) are moved in the direction of arrow B with a predetermined thrust force based on the thrust characteristics of the thrust characteristic diagram shown in FIG.

In the single-pole type linear DC motor of the present invention shown in FIG. 4, the magnetic path constituting members constituting the stator 1 are constituted by a first yoke 4 and a second yoke 5 each having a flat plate shape, and fixed. The magnetomotive force generating member forming the child 1 is
The magnetic pole surface having the polarity of the S pole is fixed to the end portion of the first yoke 4 in the arrow A direction, and the magnetic pole surface having the polarity of the N pole is fixed to the end portion of the second yoke 5 in the arrow A direction. A magnetic pole surface having an S pole polarity is fixed to the first permanent magnet 6a and an end portion of the first yoke 4 in the arrow B direction, and an N pole polarity is fixed to the end portion of the second yoke 5 in the arrow B direction. And a first permanent magnet 6b to which a magnetic pole surface having is fixed.

The first stator component member 2 is the first yoke 4
The second stator constituting member 3 is constituted by the second yoke 5. A plurality of first stator windings 8 (1) to 8 (1), which have the same winding specifications in odd layers, are arranged around the first stator constituent member 2 corresponding to the moving range of the mover 11. 8 (5) adjoins the winding start of one first stator winding and the winding end of the other one first stator winding,
They are lined up and wound.

The mover 11 is a first stator winding 8 (1) -8 (8).
Mover winding 1 wound around (5) with a specified gap
2 is mainly composed. The mover 11 causes the mover winding 12 and the first stator windings 8 (1) to 8 (5) to flow predetermined currents in the directions shown in FIG. It moves in the direction of arrow A in the space 21 with a predetermined thrust based on the thrust characteristics of the characteristic diagram, and the moving direction of the mover winding 12 and the first stator windings 8 (1) to 8 (5) are different from those shown in the figure. 9 or 1 by applying a predetermined current to each
It moves in the direction of arrow B with a predetermined thrust based on the thrust characteristic of the thrust characteristic diagram shown in FIG.

In the single pole type linear DC motor of the present invention shown in FIG. 5, the magnetic path constituting members constituting the stator 1 are constituted by a flat plate-shaped first yoke 4 and a second yoke 5, respectively, and are fixed. The magnetomotive force generating member forming the child 1 is
The magnetic pole surface having the polarity of the S pole is fixed to the end portion of the first yoke 4 in the arrow A direction, and the magnetic pole surface having the polarity of the N pole is fixed to the end portion of the second yoke 5 in the arrow A direction. A magnetic pole surface having an S pole polarity is fixed to the first permanent magnet 6a and an end portion of the first yoke 4 in the arrow B direction, and an N pole polarity is fixed to the end portion of the second yoke 5 in the arrow B direction. And a first permanent magnet 6b to which a magnetic pole surface having is fixed.

The first stator component 2 is the first yoke 4
The second stator constituting member 3 is constituted by the second yoke 5. A plurality of first stator windings 8 (1) to 8 (1), which have the same winding specifications in odd layers, are arranged around the first stator constituent member 2 corresponding to the moving range of the mover 11. 8 (5) adjoins the winding start of one first stator winding and the winding end of the other one first stator winding,
A plurality of second fixed members, which are arranged in a line and wound around the second stator constituent member 3 corresponding to the moving range of the mover 11, are configured to have the same winding specifications in odd layers, respectively. Child winding 9
(1) to 9 (5) are wound in a row so that the winding start of one second stator winding and the winding end of the other second stator winding are adjacent to each other. . Usually, the first stator winding 8 (1) -8
The winding specifications of (5) and the second stator windings 9 (1) to 9 (5) are the same.

The mover 11 is the second stator winding 9 (1) -9
Mover winding 1 wound around (5) with a specified gap
2 is mainly composed. The mover 11 includes a mover winding 12,
The first stator windings 8 (1) to 8 (5) and the second stator windings 9 (1) to 9 (5) are fed with predetermined currents in the directions shown in FIG. It moves in the direction of the arrow A in the space 21 with a predetermined thrust based on the thrust characteristic diagram shown in FIG. 12, and the mover winding 12 and the first stator windings 8 (1) to 8 (8)
(5) and the second stator windings 9 (1) to 9 (5) are supplied with predetermined currents in directions different from those shown in FIG.
Alternatively, it moves in the direction of arrow B with a predetermined thrust based on the thrust characteristic diagram shown in FIG.

In the single pole type linear DC motor of the present invention shown in FIG. 6, the magnetic path constituting members constituting the stator 1 are composed of a cylindrical first yoke 4 and a second yoke 5, respectively, and are fixed. The magnetomotive force generating member that constitutes the child 1 is configured by a second permanent magnet 7 having a cylindrical shape in which a magnetic pole surface having the polarity of the S pole is fixed to the second yoke 5.

The first stator component member 2 is the first yoke 4
The second stator constituent member 3 is composed of the second yoke 5 and the second permanent magnet 7. A plurality of first stator windings 8 (1) to 8 (1), which have the same winding specifications in odd layers, are arranged around the first stator constituent member 2 corresponding to the moving range of the mover 11. 8 (2) are wound in a row so that the winding start of one first stator winding and the winding end of the other first stator winding are adjacent to each other.

The mover 11 includes the first stator windings 8 (1) to 8 (8).
Mover winding 1 wound around (2) with a specified gap
2 is mainly composed. The mover 11 causes the mover winding 12 and the first stator windings 8 (1) to 8 (2) to flow predetermined currents in the directions shown in FIG. It moves in the direction of the arrow A in the space 21 with a predetermined thrust force based on the thrust characteristics, and the mover winding 12 and the first stator windings 8 (1) to 8 (2) are respectively moved in different directions from those shown in the figure. By causing the current to flow, the actuator moves in the direction of arrow B with a predetermined thrust based on the thrust characteristic of the thrust characteristic diagram shown in FIG.

In the single pole type linear DC motor of the present invention shown in FIG. 7, the magnetic path constituting members constituting the stator 1 are constituted by a flat plate-shaped first yoke 4 and a second yoke 5, respectively, and are fixed. The magnetomotive force generating member forming the child 1 is
A second permanent magnet 7a in the form of a flat plate in which a magnetic pole surface having the polarity of the S pole is fixed to the first yoke 4, and the first yoke 4
And a second permanent magnet 7b in the form of a flat plate to which a magnetic pole surface having N-pole polarity is fixed.

The mover 11 is mainly composed of a mover winding 12, and the mover winding 12 is composed of a flat coil having four winding sides. One winding side 14a of the flat coil is arranged in the space 21 so as to face the second permanent magnet 7a, and another winding side 14b of the flat coil is arranged in the space 21 so as to face the second permanent magnet 7b. .

The first stator component member 2 is the first yoke 4
And the second permanent magnets 7a and 7b,
The stator constituent member 3 is composed of the second yoke 5. A plurality of second stator windings 9a (1) having the same winding specifications in odd layers are formed around the second stator constituent member 3 corresponding to the moving range of the winding side 14a. ~ 9
a (3) is wound in a row so that the winding start of one second stator winding and the winding end of the other second stator winding are adjacent to each other. A plurality of second stator windings 9b (1) having the same winding specifications in odd layers are formed around the second stator constituent member 3 corresponding to the moving range of the winding side 14b.
.About.9b (3) are wound in a row so that the winding start of one second stator winding and the winding end of the other second stator winding are adjacent to each other. Usually, the second stator windings 9a (1) -9a
(3) Winding specifications and second stator windings 9b (1) to 9b (3)
The winding specifications are the same.

The mover 11 includes a mover winding 12 composed of a flat coil and second stator windings 9a (1) -9a.
(3) and the second stator windings 9b (1) to 9b (3) are supplied with predetermined currents in the directions shown in FIG.
Is moved in the direction of arrow B in the space 21 with a predetermined thrust based on the thrust characteristic of the thrust characteristic diagram shown in FIG.
The second stator windings 9a (1) to 9a (3) and the second stator windings 9b (1) to 9b (3) are supplied with predetermined currents in directions different from those shown in FIG. It moves in the direction of arrow A with a predetermined thrust based on the thrust characteristic of the thrust characteristic diagram shown in FIG.

The single pole type linear DC motor of the present invention shown in FIG. 8 mainly comprises a stator 1 and a mover 11. The stator 1 is composed of a magnetic path forming member and a magnetic force generating member, and a part of the stator 1 includes a first stator forming member 2, a second stator forming member 3a and a second stator forming member 3b. Constitute.

The first stator constituent member 2 and the second stator constituent member 3a are arranged to face each other with a predetermined distance therebetween,
Each relative surface forms a space 21a. The first stator constituent member 2 and the second stator constituent member 3b are arranged to face each other with a predetermined distance therebetween, and their relative surfaces form a space 21b. The mover 11 mainly includes the mover winding 12, and is arranged in a structure capable of smoothly moving in the space 21a and the space 21b.

The magnetic path forming members constituting the stator 1 are a first yoke 4, a second yoke 5a and a second yoke 5b, and a first yoke 4 and a second yoke 5a, each of which has a flat plate shape. Of the third yoke 10a for magnetically and mechanically connecting the ends in the direction of arrow A with the first and second yokes 4a and 5a are magnetically and mechanically connected with the ends in the direction of arrow B. The third yoke 10b, the fourth yoke 13a that magnetically and mechanically connects the ends of the first yoke 4 and the second yoke 5b in the direction of arrow A, the first yoke 4 and the second yoke 13a. And a fourth yoke 13b that magnetically and mechanically connects the ends of the yoke 5b in the direction of arrow B.

The magnetomotive force generating member constituting the stator 1 includes a second yoke 5a, a second permanent magnet 7a in the form of a flat plate having a magnetic pole surface having an N-pole polarity fixed thereto, and the second yoke 5a.
The second permanent magnet 7b has a flat plate shape in which a magnetic pole surface having an N pole polarity is fixed to b.

The first stator component member 2 is the first yoke 4
The second stator constituting member 3a is constituted by the second yoke 5a and the second permanent magnet 7a, and the second stator constituting member 3b is constituted by the second yoke 5b and the second yoke 5b.
Of the permanent magnet 7b. Around the first stator constituting member 2 corresponding to the moving range of the mover 11, a plurality of first winding layers configured to have the same winding specifications in each odd layer.
Of the stator windings 8 (1) to 8 (5) are arranged in a row so that the winding start of one first stator winding and the winding end of the other first stator winding are adjacent to each other. And then wrapped.

The mover 11 comprises the first stator windings 8 (1) -8 (8).
Mover winding 1 wound around (5) with a specified gap
2 is mainly composed. The mover 11 causes the mover winding 12 and the first stator windings 8 (1) to 8 (5) to flow predetermined currents in the directions shown in FIG. Space 21a with a predetermined thrust based on thrust characteristics
By moving in the direction of the arrow A in the interior and in the space 21b and applying a predetermined current to the mover winding 12 and the first stator windings 8 (1) to 8 (5) in directions different from those shown in the drawing, respectively. , Figure 1
The space 21a and the space 21b are moved in the direction of the arrow B with a predetermined thrust based on the thrust characteristics of the thrust characteristic chart shown in FIG.

In the single pole type linear DC motor of the present invention, the first stator windings 8 (1) to 8 (n) and the second stator windings 9 (1) to 9 (n) are wound. The specifications include the conductor wire diameter of the wire, the finish grade of the wire, the type of insulation coating, the number of turns, the number of layers, the winding direction, the DC resistance of the winding, the insulation resistance of the winding, and the withstand voltage of the winding. 1 stator winding 8 (1) -8
(n) and n representing the number of the second stator windings 9 (1) to 9 (n) are integers of 2 or more.

The single pole type linear DC motor of the present invention shown in FIGS. 1, 4 and 5 comprises a stator 1 for the purpose of cost reduction. The single pole type linear DC motor of the present invention shown in FIG. 1 enables the mover to be made smaller and lighter, and the single pole type linear DC motor of the present invention shown in FIG.
The single pole type linear DC motor of the present invention shown in FIG. 5 can be mounted simply. The single pole type linear DC motor of the present invention shown in FIG. 5 is the single pole type of the present invention shown in FIGS. It enables the long stroke of a linear DC motor and the expansion of the linear range of thrust.

The single pole type linear DC motor of the present invention shown in FIG. 1 has a first stator around the first stator constituting member 2 constituting the conventional single pole type linear DC motor shown in FIG. The windings 8 (1) to 8 (n) are wound. The single pole type linear DC motor of the present invention shown in FIG. 4 has the first stator winding 8 around the first stator constituting member 2 constituting the conventional single pole type linear DC motor shown in FIG. (1) to 8 (5) are wound. The single pole type linear DC motor of the present invention shown in FIG. 5 has a first stator winding member 1 around the first stator constituting member 2 constituting the conventional single pole type linear DC motor shown in FIG. Wind the stator windings 8 (1) to 8 (5) of 1
A second stator winding 9 (1) to 9 (5) is wound around the second stator constituent member 3.

The single pole type linear DC motor of the present invention shown in FIGS. 2, 3 and 8 comprises the stator 1 for the purpose of achieving a long stroke. The single pole type linear DC motor of the present invention shown in FIG. 2 enables the mover to be made smaller and lighter, and the single pole type linear DC motor of the present invention shown in FIG. 3 is the single pole type of the present invention shown in FIG. The single pole type linear DC motor of the present invention shown in FIG. 8 is the same as the single pole type linear DC motor of the present invention shown in FIG. It is possible to increase thrust and reduce size and weight.

The single pole type linear DC motor of the present invention shown in FIG. 2 has a first stator around the first stator constituting member 2 constituting the conventional single pole type linear DC motor shown in FIG. The windings 8 (1) to 8 (n) are wound.

The single pole type linear DC motor of the present invention shown in FIG. 6 has a stator 1 constructed for the purpose of increasing thrust, and is a first example of the conventional single pole type linear DC motor shown in FIG. A first stator winding 8 (1) to 8 (2) is wound around the first stator constituent member 2.

The single pole type linear DC motor of the present invention shown in FIG. 7 has the stator 1 constructed for the purpose of thinning and increasing the thrust. The conventional single pole type linear DC motor shown in FIG. The second stator windings 9a (1) to 9a (3) and the second stator windings 9b (1) to 9b (3) are wound around the constituting second stator constituent member 3. It was done.

FIG. 9 shows a stroke of the single-pole linear DC motor of the present invention shown in FIGS. 1, 4 and 5 of 100 [m.
FIG. 19 is a thrust characteristic diagram when it is set to [m], and corresponds to the thrust characteristic diagram shown in FIG. 18. Thrust characteristics a, b, and c shown by dotted lines are the thrust characteristics of the conventional single-pole linear DC motor shown in FIG.

FIG. 10 shows a stroke of the single-pole linear DC motor of the present invention shown in FIGS. 2 and 8 of 100 [mm].
FIG. 20 is a thrust characteristic diagram when it is set to, and corresponds to the thrust characteristic diagram shown in FIG. 19. Thrust characteristics a shown by the dotted line,
b and c are thrust characteristics of the conventional single pole type linear DC motor shown in FIG.

FIG. 11 is a thrust force characteristic diagram when the stroke of the single-pole type linear DC motor of the present invention shown in FIG. 3 is set to 100 [mm], and the thrust force characteristics a, b and c shown by dotted lines are shown.
Is a thrust characteristic when a current is applied only to the mover winding 12.

FIG. 12 shows the stroke of the single pole type linear DC motor of the present invention shown in FIGS. 1, 4, 5 and 6 in two strokes.
FIG. 21 is a thrust characteristic diagram when set to 0 [mm], and corresponds to the thrust characteristic diagram shown in FIG. 20. Thrust characteristics a, b, and c shown by dotted lines are the thrust characteristics of the conventional single-pole linear DC motor shown in FIG. 14 or 16.

FIG. 13 is a thrust characteristic diagram when the stroke of the single pole type linear DC motor of the present invention shown in FIG. 7 is set to 6 [mm], and corresponds to the thrust characteristic diagram shown in FIG. is there. Thrust characteristics a, b, and c shown by dotted lines are the thrust characteristics of the conventional single-pole linear DC motor shown in FIG.

In the thrust characteristic diagrams shown in FIGS. 9 to 13, the thrust characteristic A is that the temperature of the mover winding 12 is 20 [° C.].
Shows a thrust characteristic when a current that rises to -50 [° C] is applied to the mover winding 12, and the thrust characteristic B indicates that the temperature of the mover winding 12 rises to 80 [° C] to 100 [° C]. The thrust characteristic when a current is applied to the mover winding 12 is shown, and the thrust characteristic C is
The temperature of the mover winding 12 is 130 [° C] to 150 [° C]
The thrust characteristics when the moving element winding 12 is caused to flow a current that rises up to 10 are shown.

The thrust characteristic diagrams shown in FIGS. 9 to 13 show that the single-pole type linear DC motor of the present invention shown in FIGS. 1 to 8 produces thrust that does not fluctuate over the entire stroke, and that the thrust fluctuation fluctuates over the entire stroke. This shows that a large thrust can be achieved.

The thrust characteristic charts shown in FIGS. 9 and 12 show that the single pole type linear DC motor of the present invention shown in FIGS. 1, 4 and 5 has the same thrust force over the entire stroke even when the stroke is increased. Is generated, and it is possible to increase thrust without fluctuation in thrust over the entire stroke.

That is, the single-pole type linear DC motor of the present invention enables generation of thrust without fluctuation, increase in thrust without fluctuation in thrust, and increase in stroke without fluctuation in thrust. However, when the stroke is further increased, it becomes difficult to generate thrust that does not fluctuate, and thrust fluctuation increases as the thrust increases.Therefore, the single-pole linear DC motor of the present invention expands the linear region and thrust. It enables a large thrust without increasing fluctuations and a long stroke without increasing thrust fluctuations.

[0076]

The single-pole linear DC motor of the present invention is a conventional single-pole linear DC motor regardless of the structure of the stator, the structure of the mover, the magnetic path configuration, the arrangement of permanent magnets, the shape and the size, etc. The linear range of the thrust of the motor can be expanded, the thrust can be increased without increasing the fluctuation of the thrust, and the long stroke can be achieved without increasing the fluctuation of the thrust. The single-pole linear DC motor of the present invention enables expansion of the linear region of thrust and increase of thrust without fluctuation of thrust. It is possible to reduce the size and weight of the device, improve the responsiveness of the device, and reduce the cost thereof, and to reduce the price of the servo control circuit.

[Brief description of drawings]

FIG. 1 is a structural explanatory view of a single-pole linear DC motor of the present invention.

FIG. 2 is a structural explanatory view of a single-pole type linear DC motor of the present invention.

FIG. 3 is a structural explanatory view of a single-pole linear DC motor of the present invention.

FIG. 4 is a structural explanatory view of a single pole type linear DC motor of the present invention.

FIG. 5 is a structural explanatory view of a single-pole type linear DC motor of the present invention.

FIG. 6 is a structural explanatory view of a single-pole linear DC motor of the present invention.

FIG. 7 is a structural explanatory view of a single-pole type linear DC motor of the present invention.

FIG. 8 is a structural explanatory view of a single-pole type linear DC motor of the present invention.

9 is a thrust characteristic diagram of the single-pole type linear DC motor of the present invention shown in FIGS. 1, 4 and 5. FIG.

10 is a thrust characteristic diagram of the single-pole linear DC motor of the present invention shown in FIGS. 2 and 8. FIG.

FIG. 11 is a thrust characteristic diagram of the single-pole linear DC motor of the present invention shown in FIG.

FIG. 12 is a thrust characteristic diagram of the single-pole linear DC motor of the present invention shown in FIGS. 1, 4, 5 and 6.

FIG. 13 is a thrust characteristic diagram of the single-pole linear DC motor of the present invention shown in FIG. 7.

FIG. 14 is a structural explanatory view of a conventional single-pole type linear DC motor.

FIG. 15 is a structural explanatory view of a conventional single-pole type linear DC motor.

FIG. 16 is a structural explanatory view of a conventional single-pole type linear DC motor.

FIG. 17 is a structural explanatory view of a conventional single-pole type linear DC motor.

FIG. 18 is a thrust characteristic diagram of the conventional single-pole linear DC motor shown in FIG. 14.

FIG. 19 is a thrust characteristic diagram of the conventional single-pole linear DC motor shown in FIG. 15.

20 is a thrust characteristic diagram of the conventional single-pole type linear DC motor shown in FIG.

FIG. 21 is a thrust characteristic diagram of the conventional single-pole type linear DC motor shown in FIG. 17.

[Explanation of symbols]

1 stator 2 First stator component 3 Second stator component 4 first yoke 5 Second yoke 6a First permanent magnet 6b First permanent magnet 7 Second permanent magnet 7a Second permanent magnet 7b Second permanent magnet 8 (1) to 8 (n) First stator winding 9 (1) -9 (n) Second stator winding 9a (1) -9a (3) Second stator winding 9b (1) -9b (3) Second stator winding 10 Third York 10a Third yoke 10b Third yoke 11 mover 12 Mover winding 13a Fourth yoke 13b Fourth yoke 14a winding side 14b Winding side 21 space 21a space 21b space

Claims (2)

[Claims] 1. A stator comprising a first stator constituent member and a second stator constituent member, which are arranged opposite to each other, and mainly composed of a magnetic path constituent member and a magnetomotive force generating member, The first stator component and the second stator component are arranged in a structure capable of smoothly moving in the space formed by the respective relative surfaces, and a mover mainly composed of a mover winding is formed. In a single-pole linear DC motor, a plurality of first stators each having an identical winding specification in odd layers are provided around the first stator constituent member corresponding to the moving range of the mover. A single pole, wherein windings are arranged in a row so that a winding start of one first stator winding and a winding end of another one of the first stator windings are adjacent to each other and are wound. Type linear DC motor. 2. A plurality of second stator windings configured to have the same winding specifications in odd layers are provided around the second stator constituent member corresponding to the moving range of the mover. The winding start of one of the second stator windings and the winding end of the other of the second stator windings are adjacent to each other and are wound in a row. Single-pole linear DC motor.