JPH0345626B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention enables position sensing elements to be arranged rationally, facilitates assembly, and can be constructed at low cost. Because it does not require a V (voltage) conversion mechanism,
The present invention relates to a semiconductor DC linear motor having a propulsion speed detection mechanism that can be mass-produced at low cost.

Generally, a rotary motor or a generator that performs rotational motion is frequently used as a driving force source for moving an object. In particular, the demand for rotary motors is intense. However, in order to make an object reciprocate in a straight line using a rotary motor that performs this rotational motion, it is much more efficient to use a linear motor than to use a rotary motor. That is, when a rotary motor is used, a group of gears and a group of roll belts are required to constitute a complicated mechanism for converting rotational kinetic energy into linear kinetic energy. In this way, it is necessary to convert rotational kinetic energy into linear kinetic energy, which not only lacks the ability to instantaneously move objects in a straight line, but also makes the structure complex and expensive. This requires space for a converter, etc., and tends to result in a large and complicated device. For this reason, various new and highly efficient rotary motors have been developed and manufactured to move things in a straight line.However, in order to move things in a straight line, linear motors, which can move things in a straight line, are more effective than rotary motors. It is well known that this is much more effective, and that the linear motor car, which is said to be the dream super express train, was developed along this line. It's been a long time since people have been saying that it would be much more convenient if something as small as this linear motor car could be moved using a linear motor mechanism. Devices using linear motors include direct turntables and tone arm drive devices for record players, door opening/closing devices, camera shutter opening/closing devices, camera lens drive mechanisms for televisions and surveillance devices, copying machine moving tables, and printers. Although various methods have recently appeared, this field is still unsatisfied, and there is still much room for further improvement.

The present invention is a semiconductor DC linear motor based on the above background, in which a position sensing element can be arranged so as not to increase the air gap.
The connection terminals of the position sensing element can be rationally processed, the position sensing element can be rationally arranged at an appropriate position, and a propulsion speed detection mechanism that does not require an F-V conversion mechanism is rationally incorporated, and It is an object of the present invention to provide a semiconductor DC linear motor having a highly efficient propulsion speed detection mechanism suitable for mass production at low cost and practical use.

Embodiments of the present invention will be described below with reference to the drawings.

First, a first embodiment of the present invention will be described with reference to FIGS. 1 to 6. Figure 1 is a longitudinal sectional view of the semiconductor DC linear motor LM having a moving field magnet type propulsion speed detection mechanism when viewed from the side, Figure 2 is a top view viewed from the top, and Figure 3 is The first embodiment will mainly be described with reference to FIGS. 1 to 3, which are longitudinal sectional views taken along the X-Y line in FIG. 2 when viewed from the strike direction. The lower surface of the magnetic yoke 1, which is made of a long plate and has a U-shaped cross section, is made of a magnetic pole body, and has three or more magnetic poles, N poles and S poles, alternately arranged in the longitudinal direction, and in this embodiment, six poles. For example, a field magnet 2 on a long plate as shown in FIG. 4 is fixedly installed. On the upper surface of the long plate-shaped magnetic yoke 3, which is the fixed side facing the field magnet 2, there are 4 groups of power generating coils for detecting propulsion speed, which are wound into a frame shape similar to the armature coil described later. They are fixedly installed at equal intervals along the longitudinal direction so as not to overlap each other. Guide rails 5 are fixed to both ends of the upper surface of the magnetic yoke 3 along its longitudinal direction for guiding the yoke 1 so that it can reciprocate in a straight line. A guide roller 7 is rotatably supported by a shaft 6 on both side bent portions 1a of the yoke 1, and is adapted to slide on a guide groove 5a of a guide rail 5. A printed circuit board 8 is fixedly installed on the upper surface of the generator coil 4, and on this printed circuit board 8, printed conductor wiring (not shown) is formed of conductive foil, and a drive circuit and a terminal are soldered to the wiring portion. Appropriate electrical components constituting an electrical circuit such as a speed control circuit can be installed. The advantages of doing so will become clearer in the following description. The opening angle of the conductor portions 9-a, 9a and 9-b, 9b contributing to the thrust is n times the magnetic pole width of the field magnet 2 ( (n is a positive integer greater than or equal to 1), or one formed by winding to a width close to it (in this embodiment, n = 1), or (2n-1) of the magnetic pole width of the field magnet 2.
times (n is a positive integer greater than or equal to 1) (in Figure 1, n
= 1. ) A large number of armature coils 9 are wound to have the same width as or close to the width of the armature coils 9, and are tightly fixed in a long row on a plane so as not to overlap each other. 9-
c and 9-d are conductor portions that do not contribute to thrust. The power generation is performed so that the conductor portions 9-a, 9-b contributing to the two thrusts of the armature coil 9 group and the conductor portion perpendicular to the running direction of the power generation coil 4 do not completely face each other. Either the 4 groups of coils or the 9 groups of armature coils are shifted in the longitudinal direction by an appropriate distance, and are overlapped indirectly on both sides of the printed circuit board 8 via the printed circuit board 8. In the armature coil 9, as shown in Figure 5, the opening angle between the conductor parts 9-a, 9a and 9-b, 9b, which contribute to the generated torque by winding the conductor wire in many turns, is determined by the field A square (rectangle) wound so that it can form an opening angle width that is approximately the same as the magnetic pole width of magnet 2.
A frame-shaped one (rectangular in Figure 5) is used. The same applies to the power generation coil 4. A magnetoelectric conversion element 10 such as a Hall element or a Hall IC is used as a position detection element to be disposed on the conductor portion 9-a or 9-b (on the surface facing the field magnet 2) that contributes to the thrust of the armature coil 9. is soldered onto the printed circuit board 8 so as to be accommodated in the frame cavity 12 of the generating coil 4 at a position facing the conductor portion 9-a or 9-b. That is, the magnetoelectric conversion element 10 has a conductor portion 9- which contributes to the thrust of the armature coil 9 facing the field magnet 2.
It is arranged on the lower surface of a or 9-b. In order to be able to rationally arrange the magnetoelectric conversion element 10 in this manner, it is preferable to use a transparent or semi-transparent material as the printed circuit board 8. In addition, if the terminals of the magnetoelectric transducer 10 are bent or guided to a position on the printed circuit board 8 that does not face the armature coil 9 and soldered at that position, the terminals of the magnetoelectric transducer 10 can be conveniently handled. Since the connecting terminal portion does not need to protrude to the upper surface of the armature coil 9, there is no fear that the air gap magnetic field will be weakened by the connecting terminal portion. In this way, the magnetoelectric transducer 10 originally used for detecting the position of the armature coil 9 is replaced with the armature coil 9.
(perpendicular to the moving direction of the mover)
What should be arranged on the conductor part 9-9 or 9-b,
When placed in the above position, the element 10 originally causes
The field magnet and armature coil 9 are
This solves the problem of not being able to obtain strong thrust due to the increased air gap between the group and the group. Further, for the armature coil 9, an element 10 to be disposed on the conductor portion 9-a or 9-b is connected to the conductor portion 9-a or 9-b.
It must be correctly positioned and arranged between the conductor parts 9-a and 9-b, which have the same positional relationship as if they were arranged on the armature coil 9, that is, within the hollow part 11 within the frame of the armature coil 9. This inefficiency can be solved. In addition, if the armature coil 9 is small or has a large number of turns of conductive wire, the magnetoelectric transducer 1 is placed in the hollow part 11 of the armature coil 9.
Even if it is not possible or difficult to arrange 0, these drawbacks can be overcome according to the embodiments of the present invention. FIG. 6 shows a developed view of 8 groups of generating coils, 9 groups of armature coils, field magnet 2, and element 10. As is clear from FIG. 6, both terminals of each armature coil 9 are now connected to the semiconductor rectifier 13,
Both output terminals of each element 10 are connected to a semiconductor rectifier 13. The semiconductor rectifier 13 has a positive power terminal 14-1 and a negative power terminal 14.
-2 is pulled out. That is, terminal 14-1,
14-2 is connected to the end conductor portion of the printed circuit board 8. In order to do this, the semiconductor rectifier 13 and the interconnection parts of the elements 10 may be concentrated at the end of the printed circuit board 8. The above element 1
0 is the conductor portion 9-a or 9 that contributes to the thrust, respectively.
It is most convenient to arrange it on the surface facing the field magnet 2 on -b, and there are many other merits as well. However, if the element 10 is disposed in such a position, the air gap between the field magnet 2 and the yoke 3 increases by the thickness of the element 10, so that a strong thrust force cannot be obtained accordingly. Therefore, as described above, regarding the element 10, the conductor portion 9-a or 9-b
The above-mentioned drawbacks are solved by arranging the generator coil 4 at the position of the in-frame cavity 12 of the generator coil 4, which is opposite to the generator coil 4.
One terminal of each of the generator coils 4 is now connected to the ground G, and each other terminal is connected to a rectifier circuit 15 including an amplifier circuit and a rectifier. The field magnet 2 is the generator coil 4
By making relative linear motion with the semiconductor DC linear motor LM, the generated voltage output signal for detecting the propulsion speed of the semiconductor DC linear motor LM of the rectifier circuit 15 is
It is input to the propulsion speed control circuit 16 of. The circuit 1
The output of 6 is input to the positive power supply terminal 14-1 to control the propulsion speed of the semiconductor DC linear motor LM.

A moving field magnet type semiconductor DC linear motor LM as a first embodiment of the present invention has the above-mentioned configuration.

Therefore, when the semiconductor rectifier 13 is powered on, the magnetoelectric conversion element 10 detects the N pole or S pole of the field magnet 2, as shown in FIG. A current in the direction of the arrow is passed through the child coil 9, and according to Fleming's left hand rule, the armature coil 9 as a whole flows in the direction of the arrow F.
Directional thrust is generated. As a result, the field magnet 2, which is a mover, moves the armature coil 9 in the direction of arrow F.
and travels in a straight line relative to the generator coil 4.
As a result, as described above, the power generation coil 4
From the terminals of
When it passes through the pole, a generated voltage is generated. This generated voltage is amplified and rectified by a rectifier circuit 15, and then this output is input to a propulsion speed control circuit 16. The control circuit 16 compares the generated voltage output signal for detecting the propulsion speed of the rectifier circuit 18 with a reference signal, and speeds up or slows down the propulsion speed in the state by the output difference signal, thereby adjusting the linear By inputting a signal for correcting the propulsion speed of the motor LM to the set signal to the positive power supply terminal 14-1, the semiconductor rectifier 13 is controlled to control the linear motor.
Controls the LM's propulsion speed.

7 and 8 show a second embodiment of the present invention, in which the element 10 can be placed on the conductor portion 9-a or 9-b that contributes to the thrust of the armature coil 9. show.

Here, FIG. 7 corresponds to FIG. 1, and FIG. 8 corresponds to FIG. 6. In other respects, there is almost no difference from the first embodiment, so a detailed explanation of these matters will be omitted. In this second embodiment, the armature coil 9 and the generator coil 4 are used as shown in FIG. 1 and FIG.
The position of is reversed. That is, this embodiment differs from the first embodiment in that the generating coil 4 is disposed close to the field magnet 2, that is, shifted from the upper surface of the armature coil 9. In the second embodiment, as described above, the positions of the generator coil 8 and the armature coil 9 are reversed from those in the first embodiment. In this way, the magnetoelectric transducer 10 has a conductor portion 9-a or 9-a that contributes to the thrust of the armature coil 6.
Even if the element 10 is placed in the part facing the magnetoelectric transducer 10, the element 10 is located within the cavity 12 within the frame of the generator coil 4, so the air gap field air gap is further increased by the thickness of the magnetoelectric transducer 10, and the thrust is increased. There is no fear that this will cause a decline in Further, in this second embodiment, since the magnetoelectric transducer 10 directly faces the field magnet 2, there is an advantage that the magnetoelectric transducer 10 does not necessarily need to be used as a position detection element. For example, there is an advantage that an optical sensor such as a photoreflector having a light emitting element and a photoconductive conversion element can be used. When the photoreflector described above is used, colored portions of two colors, black and white, having different reflectances, for example, may be formed alternately at equal intervals on the lower surface of the field magnet 2.

FIG. 9 shows a third embodiment of a moving field magnet type DC linear motor LM of the present invention.

The one shown in FIG. 9 shows the third embodiment, in which the magnetic yoke 3 shown in FIG.
Removed from the generator coil 4 and through a minute gap,
The structure is such that field magnets 2 similar to the field magnets 2 facing the armature coil 9 are fixed with the same poles facing each other, and a magnetic yoke 3 is disposed on the back surface thereof. That is, armature coil 9
A strong thrust force can be obtained by disposing field magnets 2 on both the upper and lower sides.

FIG. 10 shows a fourth embodiment of the present invention.
In the semiconductor DC linear motor LM shown in Fig. 9,
It has a structure in which a printed circuit board 17 and a long plate-shaped magnetic yoke 18 are interposed between the armature coil 9 and the printed circuit board 8.

In the above four embodiments, the case where the field magnet 2 side travels in a straight line is shown. However, in such an embodiment, if the linear travel distance of the field magnet 2 is short, this may be because the power cord does not move compared to the moving armature coil type semiconductor DC linear motor LM', or This is rational because there is no need to provide a slip ring rail for power supply, but on the other hand, it has an uneconomical element in that a large number of generating coils 4 must be provided.

Therefore, if the linear travel distance of the moving element is somewhat long, it may be preferable to use a moving armature coil type semiconductor DC linear motor LM' even if the above-mentioned power cord is moved or a slip-spring lane is provided. .

For this reason, the following embodiment of the moving armature coil type semiconductor DC linear motor LM' will be described.

FIG. 11 to FIG. 13 show a fifth embodiment of the present invention, which corresponds to the first embodiment of the present invention. The positions of the element 10 and the field magnet 2 are reversed. That is, the stator is formed long on the field magnet 2 side in the longitudinal direction, and the movable element is formed on the side having the armature coil 9, the generator coil 4, and the magnetoelectric conversion element 10, and is formed short in the longitudinal direction. Note that illustrations of the power cord or the slip ring rail for power supply are omitted. In this fifth embodiment, FIG. 11 corresponds to FIG. 1, and FIG. 12 corresponds to FIG.
FIG. 13 corresponds to FIG. 6.

It should be noted that since the arrangement is simply reversed as described above, the functions and operations are the same, so detailed explanation thereof will be omitted.

14 and 15 show a sixth embodiment of the present invention, and show a case where the moving armature coil type semiconductor DC linear motor LM' corresponds to FIG. 8 is a developed view corresponding to FIG.

FIG. 16 shows a seventh embodiment of the present invention, in which a movable armature coil type semiconductor DC linear motor LM' is used instead of the one shown in FIG. Incidentally, as in the case of FIG. 9, a longitudinal cross-sectional view when viewed from the running direction is omitted. This is because a wide variety of things can be considered, and it is easy to think of a wide variety of things, including those disclosed in the patent application by the present applicant.

FIG. 17 shows an eighth embodiment of the present invention.
A case is shown in which the motor shown in FIG. 10 is used as a moving armature coil type semiconductor DC linear motor LM'.

FIG. 18 shows a ninth embodiment of the present invention.
This is a moving field magnet type semiconductor DC linear motor LM corresponding to FIGS. 1 and 11. In this embodiment, the magnetoelectric transducer 10 is arranged within the frame cavity 11 of the armature coil 8. The same applies to the examples shown below.

FIG. 19 is a developed view of the field magnet 2, power generation coil 4, and armature coil 9 in FIG. 18.

Referring to FIGS. 18 and 19, it is desirable that the magnetoelectric conversion element 10 be disposed at a position facing the conductor portion that contributes to the thrust of the armature coil 9; The disadvantage is that the air gap between the field magnet 2 and the magnetic yoke 3 increases by the thickness of the element 10, making it impossible to obtain a strong thrust. On the other hand, there is an advantage that positioning of the magnetoelectric transducer 10 is easy. Therefore, in the embodiment described above, the magnetoelectric conversion element 10 is disposed within the frame cavity 12 of the generator coil 4 corresponding to the conductor portion contributing to the thrust of the armature coil 9. However, when the generating coil 4 is wound so as to be very thin, there is a drawback that the magnetoelectric transducer 10 cannot be accommodated within the frame cavity 12 of the generating coil 4. The ninth embodiment was made in order to solve the above-mentioned drawbacks, and the magnetoelectric conversion element 10 is located inside the frame hollow part 11 of the armature coil 9, which is located at the same position as the conductor part that contributes to the thrust of the armature coil 9. The location is arranged. For example, taking the armature coil 9-1 as an example, the magnetoelectric transducer 10-1 for the armature coil 9-1 is located at the same position as the conductor portion that contributes to the thrust of the armature coil 9-1. Child coil 9
It is disposed at the position of the dotted line surrounding part 20 in the frame cavity part 11 of -2. Similarly, the magnetoelectric transducer 10-2 for the armature coil 9-2 is located at the dotted line enclosure 21, and the magnetoelectric transducer 1 for the armature coil 9-3 is located at the dotted line enclosure 21.
0-3 is disposed at the dotted line encircling portion 22 position. In this case, since the conductor portion of the generating coil 4 is arranged so as to correspond to the position where the magnetoelectric transducer 10 is to be arranged (see FIGS. 18 and 19), the printed circuit board 8 can be semi-transparent or If a transparent one is used, positioning of the magnetoelectric transducer 10 will be easier.

FIG. 20 shows a moving field magnet type semiconductor DC linear motor LM showing a tenth embodiment of the present invention, and corresponds to FIGS. 7 and 14.

FIG. 21 is a developed view of the field magnet 2, power generation coil 4, and field magnet 9 in FIG.

FIG. 22 shows a moving field magnet type semiconductor DC linear motor LM showing an eleventh embodiment of the present invention, and corresponds to FIGS. 9 and 16.

FIG. 23 shows a moving field magnet type semiconductor DC linear motor LM showing a twelfth embodiment of the present invention, and corresponds to FIGS. 10 and 17.

FIG. 24 shows a moving armature coil type semiconductor DC linear motor LM' as a thirteenth embodiment of the present invention, and corresponds to FIGS. 1, 11, and 18.

FIG. 25 shows a developed view of the field magnet 2, power generation coil 4, and armature coil 9 in FIG. 24.

FIG. 26 shows a moving armature coil type semiconductor DC linear motor LM' as a fourteenth embodiment of the present invention, and corresponds to FIGS. 7, 14, and 20.

FIG. 27 shows a developed view of the field magnet 2, power generation coil 4, and armature coil 9 in FIG. 26.

FIG. 28 shows a moving armature coil type semiconductor DC linear motor LM' as an embodiment of the present invention shown in FIG. 15, and corresponds to FIGS. 9, 16, and 22.

FIG. 29 shows a moving armature coil type semiconductor DC linear motor LM' as a fifteenth embodiment of the present invention, and corresponds to FIGS. 10, 17, and 23.

As is clear from the above embodiments, the semiconductor DC linear motor having the propulsion speed detection mechanism of the present invention is
The position detection element can be installed without increasing the magnetic air gap, and the position detection can be achieved by overlapping the generating coil and the armature coil with their positions shifted in the longitudinal direction via the printed circuit board. The above-mentioned element can be housed and arranged in the above-mentioned frame cavity so that the connection terminal of the element and the generating coil or armature coil can be rationally stored in the frame-inside cavity, so that the above-mentioned air gap is not increased. Therefore, strong thrust can be obtained. In addition, since the structure is such that the voltage for detecting the propulsion speed can be obtained directly from the generator coil, the propulsion speed of the mover can be detected without the need for an expensive F-V conversion mechanism.
It is possible to obtain a semiconductor DC linear motor having a propulsion speed detection mechanism suitable for low cost mass production and practical use.

[Brief explanation of drawings]

FIG. 1 is a vertical cross-sectional view of a movable field magnet type semiconductor DC linear motor having a propulsion speed detection mechanism according to a first embodiment of the present invention, viewed from the side;
The figure is a top view as an example of the thing in Figure 1 seen from the top, Figure 3 is a vertical sectional view as an example of the thing in Figure 1 seen from the front, and Figure 4 is the same as the thing in Figure 1. Figure 5 is a perspective view of the armature coil as an example used in the one in Figure 1. Figure 6 is a perspective view of the field magnet and power generation in the one in Figure 1. FIG. 7 is a developed view of the coil and armature coil, and FIG. 7 is a vertical cross-sectional view of a moving field magnet type semiconductor DC linear motor having a propulsion speed detection mechanism showing a second embodiment of the present invention, viewed from the side. The diagram shows the field magnet in Figure 7,
FIG. 9 is a developed view of a power generating coil and an armature coil, and FIG. 9 is a vertical cross-sectional view of a moving field magnet type semiconductor DC linear motor having a propulsion speed detection mechanism according to a third embodiment of the present invention, when viewed from the side. FIG. 10 is a longitudinal cross-sectional view of a moving field magnet type semiconductor DC linear motor having a propulsion speed detection mechanism according to a fourth embodiment of the present invention, when viewed from the side, and FIG. 11 is a longitudinal sectional view showing a fifth embodiment of the present invention. FIG. 12 is a longitudinal sectional view as an example of the movable armature coil type semiconductor DC linear motor having a propulsion speed detection mechanism as seen from the side, and FIG. 12 is an example of a longitudinal sectional view of the one in FIG. Figure 13 is a developed view of the field magnet, power generation coil and armature coil in Figure 1;
FIG. 14 is a longitudinal cross-sectional view of a semiconductor DC linear motor having a propulsion speed detection mechanism according to a sixth embodiment of the present invention when viewed from the side, and FIG. Developed diagram,
FIG. 16 is a longitudinal sectional view of a movable armature coil type semiconductor DC linear motor having a propulsion speed detection mechanism according to a seventh embodiment of the present invention, when viewed from the side;
FIG. 17 is a vertical cross-sectional view of a movable armature coil type semiconductor DC linear motor having a propulsion speed detection mechanism showing an eighth embodiment of the present invention, when viewed from the side;
FIG. 18 is a vertical cross-sectional view of a movable field magnet type semiconductor DC linear motor having a propulsion speed detection mechanism according to a ninth embodiment of the present invention, when viewed from the side direction, and FIG. FIG. 20 is a developed view of a magnet, a generator coil, and an armature coil, and shows a movable field magnet type diameter semiconductor DC linear motor having a propulsion speed detection mechanism according to a tenth embodiment of the present invention, when viewed from the side. 21 is a developed view of the field magnet, power generation coil, and armature coil in FIG. 20, and FIG. 22 is a movable field magnet type semiconductor direct current having a propulsion speed detection mechanism showing the 11th embodiment. FIG. 23 is a vertical cross-sectional view of a linear motor viewed from the side, and FIG. 23 is a vertical cross-sectional view of a movable field magnet type semiconductor DC linear motor having a propulsion speed detection mechanism according to a twelfth embodiment of the present invention, viewed from the side. 24 is a longitudinal sectional view of a movable armature coil type semiconductor DC linear motor having a propulsion speed detection mechanism according to a 13th embodiment of the present invention when viewed from the side, and FIG. Figure 26 is a developed view of the field magnet, generator coil, and armature coil.
14 A vertical cross-sectional view of a movable armature coil type semiconductor DC linear motor having a propulsion speed detection mechanism shown in the embodiment when viewed from the side, FIG. 27 shows the field magnet, power generation coil, and armature coil in FIG. 26. FIG. 28 is a longitudinal cross-sectional view of a movable field magnet type semiconductor DC linear motor having a propulsion speed detection mechanism according to the 15th embodiment of the present invention, when viewed from the side, and FIG. 29 is a longitudinal sectional view of the present invention. FIG. 12 is a vertical cross-sectional view of a movable armature coil type semiconductor DC linear motor having a propulsion speed detection mechanism according to a 16th embodiment of the present invention when viewed from the side. LM, LM'...Semiconductor DC linear motor, 1...
...Magnetic material yoke, 1a...Bending portion, 2...Field magnet, 3...Magnetic material yoke, 4...Generating coil, 5...Guide rail, 5a...Guide groove,
6... Axis, 7... Guide roller, 8... Printed circuit board, 9... Armature coil, 9-a, 9-b...
Conductor portion contributing to thrust, 9-c, 9-d... Conductor portion not contributing to thrust, 10... Magnetoelectric conversion element (position detection element), 11, 12... Hollow portion in frame, 13
... Semiconductor rectifier, 14-1 ... Positive power terminal, 14-2 ... Negative power terminal, 15 ... Rectifier circuit, 16 ... Propulsion speed control circuit, 17 ... Printed circuit board, 18 ... Magnetic yoke ,20,2
1, 22...Dotted line enclosure.

Claims (1)

[Claims] 1. A field magnet having N and S poles alternately in the longitudinal direction, an armature coil wound in a frame shape at a position facing the field magnet, and an armature coil wound in a frame shape at a position facing the field magnet. A propulsion speed detection device characterized in that wound power generation coils are arranged in a superimposed manner, a position detection element is provided, one of the field magnet or the armature coil and the power generation coil is used as a moving element, and the other is used as a stator. A semiconductor DC linear motor with a mechanism. 2. A semiconductor DC linear motor having a propulsion speed detection mechanism according to claim 1, wherein the position detection element is disposed in a cavity within a frame of an armature coil. 3. Propulsion according to claim 2, characterized in that the position detection element is disposed at a position in a hollow part within the frame of the armature coil, which is located at the same position as a conductor part that contributes to the thrust of the armature coil. A semiconductor DC linear motor with a speed detection mechanism. 4. Claim 1, characterized in that the position detection element is arranged in a cavity within the frame of the power generation coil.
A semiconductor direct current linear motor having a propulsion speed detection mechanism as described in 1. 5. The propulsion speed detection mechanism according to claim 4, wherein the position detection element is disposed in a cavity within the frame of the power generation coil facing the conductor portion contributing to the thrust of the armature coil. A semiconductor DC linear motor with 6. A semiconductor DC linear motor having a propulsion speed detection mechanism according to any one of claims 1 to 5, wherein the position detection element is a magnetoelectric conversion element. 7. A semiconductor direct current device having a propulsion speed detection mechanism according to any one of claims 1 to 6, characterized in that the armature coil and the power generation coil are arranged in an overlapping manner with their positions shifted in the longitudinal direction. linear motor. 8. A semiconductor DC linear motor having a propulsion speed detection mechanism according to any one of claims 1 to 7, wherein the armature coil and the power generation coil are arranged in an overlapping manner via a printed circuit board. 9. The semiconductor DC linear having a propulsion speed detection mechanism according to any one of claims 1 to 8, wherein the power generating coil is wound to be thinner than the armature coil. motor. 10 In the above armature coil, the opening angle of the conductor portion contributing to the thrust is n times the magnetic pole width of the field magnet (n is 1
10. A semiconductor direct current linear motor having a propulsion speed detection mechanism according to any one of claims 1 to 9, characterized in that the semiconductor DC linear motor is wound at an opening angle of (the above positive integer). 11 The above armature coil is characterized in that the opening angle of the conductor portion contributing to the thrust is 2n-1 times the magnetic pole width of the field magnet (n is a positive integer of 1 or more). A semiconductor DC linear motor having a propulsion speed detection mechanism according to claim 10. 12. Claim 10 or 11, characterized in that the power generation coil is wound with substantially the same opening angle as the armature coil.
A semiconductor direct current linear motor having a propulsion speed detection mechanism according to paragraph 1. 13. A semiconductor having a propulsion speed detection mechanism according to any one of claims 1 to 12, wherein the armature coil is disposed closer to the field magnet than the power generation coil. DC linear motor. 14. A semiconductor having a propulsion speed detection mechanism according to any one of claims 1 to 12, wherein the power generation coil is disposed closer to the field magnet than the armature coil. DC linear motor. 15. A semiconductor DC linear motor having a propulsion speed detection mechanism according to any one of claims 1 to 14, wherein the armature coils are arranged so as not to overlap each other. 16. A semiconductor DC linear motor having a propulsion speed detection mechanism according to claim 15, wherein the armature coils are arranged at equal intervals. 17. A semiconductor DC linear motor having a propulsion speed detection mechanism according to any one of claims 1 to 16, wherein the power generation coils are arranged so as not to overlap each other. 18. A semiconductor direct current linear motor having a propulsion speed detection mechanism according to claim 17, wherein the generating coils are arranged at equal intervals.