JPH0697829B2 - Eyeglass-shaped armature coil, method of manufacturing the same, and armature coil array including the eyeglass-shaped armature coil - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a coil or a coil array for forming a traveling magnetic field medium (generally referred to as an electromagnetic rail) of a linear motor, and more specifically, The present invention relates to a spectacle-shaped armature coil and a method for manufacturing the same, and to a polymerized armature coil, a polymerized armature coil array, and a double polymerized armature coil array including the spectacle-shaped armature coil as a constituent unit.

[Prior Art] In recent years, a wide variety of linear motors have been put into practical use, from small electronics fields to large railway fields. This linear motor generates a continuous traveling magnetic field of a predetermined frequency and a predetermined thrust and reaction force between the magnetic fields (magnets) interlinking with this traveling magnetic field. In principle, Fleming's law It is based on.

As a medium for the traveling magnetic field, generally, a plurality of armature coil rows in which armature coils made of insulated conductors are electrically connected and connected at a predetermined interval are used so as to have a mutually predetermined electrical phase difference. ing. As the armature coil or the armature coil array, those shown in FIG. 5 to FIG. 6 are conventionally known if they are simply modeled.

In the figure, the odd-numbered armature coils are rectangular coils in which insulated wires are wound clockwise in a coil pitch length Cp. Lead wires so that the coils of the same winding direction are separated from each other by one coil pitch length Cp.
An armature coil array a is formed by electrically connecting and connecting via 1a.

Another armature coil array b in FIG. 5 is a rectangular even-numbered armature coil formed by winding an insulated conductive wire in the same direction as the odd-numbered coil with a coil pitch length Cp. The coil pitch length Cp is electrically connected and connected to each other via the.

When the coils of both armature coil rows a and b are fitted in the space where the coils of both armature coil rows a3b do not exist, a single row of composite electric machine including coils arranged in numerical order as shown in FIG. A child coil array AB is formed. By the same procedure, another row of composite armature coil rows CD including armature coil rows c and d corresponding to the armature coil rows a and b is formed. In the armature coil arrays c and d and the composite armature coil array CD, the lead wires 2c and 2d correspond to the lead wires 1a and 1b, respectively, and each coil with a prime symbol "'" Corresponds to ...

A simple model of these two rows of composite armature coil arrays AB, C
D is to the left or right of each coil with the same number 1
/ 2Cp Coil pitch It is arranged side by side so that the coil length is different from each other.
(In the figure, the composite armature coil array CD is displaced to the right by a coil pitch Cp / 2 with respect to the composite armature coil array AB.) Two rows of composite armature coil arrays arranged side by side in this manner AB, CD
By electrically connecting and connecting one end (the right end in the figure) of one end, a medium structure of the traveling magnetic field, a so-called conventional magnetic rail is formed. In addition, between the opposing rows of both composite armature coil rows AB, CD, outside the connection, etc.,
It goes without saying that electrical insulation can be applied from the viewpoint of safety.

The other end (left end in the figure) of both composite armature coil arrays AB and CD is electrically connected to the commutation circuits A, B, C and D of the current switching device SW as shown in FIG. By connecting by wire connection, it is possible to continuously generate a traveling magnetic field at a predetermined frequency in each of the four armature coil arrays a, b, c, d.

The current switching unit SW is shown in a state of being connected to the four rows of armature coil rows a, b, c, d in FIG. 5 so that the state of wire connection is clear. In the composite armature coil arrays AB and CD of FIG. 6, the current switching device SW is not shown.

As the current switching switch SW, FIG. 5 shows a case where forced commutation thyristor flip-flop type circuits (A, B) and (C, D) are used.

In this current switching switch SW, the circuits A and C that are now filled in black and the two rows of composite armature coil rows A connected to this
Of B and CD, the armature coil arrays a and c are assumed to be in a conductive state. Here, when the magnetic flux (magnetic field) advances by 1/2 Cp coil pitch length, when the switches are switched from the circuits A and C to the circuits B and D, the armature coil arrays b and d become conductive. By switching the armature coil array that conducts at a predetermined order and frequency, a field magnetic field having a predetermined frequency is generated, and the magnetic flux (magnet) continuously advances in synchronization.

[Problems to be Solved by the Invention] First, problems in the structure of forming the conventional composite armature coil arrays AB and CD will be described.

Connect each coil of the coil row a, b (c, d) to the lead wires 1a, 1b (2c,
2d) is electrically connected and connected, and if it is attempted to arrange them on the same plane without unevenness, in the coil rows a and (c), the vertical side of the coil and the lead wire 1a (1c) are Cross over. Therefore, it is necessary to bend the lead wire 1a (1c) in a stepwise manner by the thickness of the right vertical side of the coil. Similarly, in the coil row b (d), the coil vertical side and the lead wire 1b (2d)
Since they cross each other, it is necessary to bend the lead wire 1b (2d) into a step shape by the thickness of the vertical side of the coil.

In order to fit the coils of length Cp in each row into the space (length Cp) where the coils of the coil rows a, b (c, d) do not exist so that they can be arranged on the same plane Requires high dimensional accuracy in forming each coil.

Therefore, the formation of the composite armature coils AB, CD is extremely complicated because it is required to bend the lead wires 1a, 1b, 2c, 2d and maintain the dimensional accuracy of each coil as described above. is there.

Next, problems in terms of electrical aspects will be described.

In the two-row composite armature coil rows AB and CD, as described above, when switching the conduction current at a predetermined frequency for each of the four rows of armature coil rows a, b, c, d, switching (commutation) Voltage is generated. Therefore, the locations listed below require electrical insulation to withstand this switching (commutation) voltage, and further the speed electromotive voltage of the magnetic flux (magnet).

(1) The same composite armature coil array AB (CD) is formed, but between adjacent coils with different armature coil arrays a, b, (c, d), that is, adjacent odd-numbered and even-numbered coils Between the coils.

(2) Lead wires 1a, 1b (2c, 2d) with different armature coil rows a, b (c, d) in the same composite armature coil AB (CD)
And adjacent to the coil, that is, the composite armature coil array AB
(CD) adjacent to each even numbered coil and lead wire 1a (1c), odd numbered each coil and lead wire 1b (1d). Also,
Bent portions of the lead wires 1a, 1b, 2c, 2d, etc.

(3) Between two rows of the composite armature coil rows AB and CD arranged so that the corresponding coil positions are shifted by a predetermined coil pitch length.

Therefore, in general, a predetermined insulation interval via an electrical insulator is required, and the space occupied by the composite armature coil arrays AB and CD becomes large. Along with this, there has been a problem that the field pole face spacing becomes large and the magnetic flux (magnet) itself becomes long.

The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to improve workability at the time of formation, reduce necessary electrical insulators, and reduce occupation space. Predetermined number n (= 2,3,4 ... that can be reduced)
...) row composite armature coil row electromagnetic rails, and in particular to provide armature coils and polymerized armature coils for configuring this armature coil row.

[Means for Achieving the Object] In order to achieve the above-mentioned object, an armature coil of the present invention is configured such that one insulated conductive wire is continuously formed into a pair of substantially spectacle shapes on the same plane from a start end portion to an end portion. A spectacle-shaped armature coil having a predetermined coil pitch length Cp formed by winding, wherein one end of the insulated conductor is wound in a spiral shape having a coil pitch length Cp / 2 with the innermost peripheral end portion. A first coil corresponding to one of the pair of monoculars, and a second coil corresponding to the other of the pair of monoculars, which is spirally wound with the other end being the innermost peripheral end and having a coil pitch length Cp / 2. The winding directions of the first and second coils are opposite to each other when viewed from one end of the insulated conductor.

Further, this method for manufacturing an eyeglass-shaped armature coil is such that a single insulated conductor is continuously wound into a pair of substantially eyeglass shapes on the same plane from the starting end to the terminating end, and a predetermined coil pitch length Cp
In manufacturing a pair of spectacle-shaped armature coils, the spiral shape having a coil pitch length Cp / 2 in either the clockwise direction or the counterclockwise direction with one end of the insulated conductor as the innermost peripheral end. To form a first coil corresponding to one of the pair of monoculars, and continuously from the winding end portion of the first coil toward the other end portion of the insulated conducting wire. In the opposite direction, and by winding the other end of the insulated conductor as the innermost peripheral end in a spiral shape with a coil pitch length Cp / 2, the second coil corresponding to the other monocular is formed. To form.

Further, the polymerized armature coil of the present invention is a coil formed by overlapping two pairs of the above-mentioned eyeglass-shaped armature coils in the thickness direction thereof, and the two pairs of eyeglass-shaped armature coils are mutually mirrored. As shown in FIG. 1, it is a shape obtained by turning the coil pitch length Cp of each coil upside down around a central axis that equally divides it so as to be symmetrical, and as shown in FIG. In the child coil, the parts corresponding to the monocular shape having the same coil pitch length Cp / 2 are overlapped with each other, and the innermost peripheral ends of the parts corresponding to the monocular shape are overlapped with each other. So that two pairs of eyeglass-shaped armature coils are
Cp / 2 are shifted and aligned in two rows and one row, and the overlapping innermost peripheral end portions are electrically connected.

Furthermore, the polymerized armature coil array of the present invention includes a predetermined plurality of
A superposed armature coil row that is electrically connected in one row on the non-overlapping side, and the coil pitch length on the non-overlapping side of adjacent superposed armature coils
Cp / 2 so that the parts corresponding to the monocular shape overlap each other in their thickness direction, and so that the innermost peripheral end of the part corresponding to this monocular overlap, the double-armed armature coils It is formed by overlapping in the thickness direction and electrically connecting the overlapping innermost peripheral end portions.

Further, the double-polymerized armature coil array of the present invention is a double-polymerized armature coil array in which a predetermined plurality of n-columns of the polymerized armature coil are arranged in parallel in a simple model. In the overlapping armature coil array, coils having opposing coil pitch lengths Cp are arranged side by side in the row direction with the coil pitch lengths Cp / 2n being shifted.

[Operation] Since this spectacle-shaped armature coil is manufactured from one piece of insulated wire, the first and second coils are electrically connected and
No connecting leads are required.

Further, the overlapping armature coil row composed of the overlapping armature coil and this overlapping armature coil in which the spectacle-shaped coils are superposed in two stages and one row is a single eyeglass with a coil pitch length Cp / 2 having the same size. The corresponding portion and the innermost peripheral end portion thereof are overlapped with each other, and the overlapping innermost peripheral end portions are electrically connected. Therefore, these superposed armature coils and superposed armature coil arrays also do not require lead wires. In this case, the superposed armature coil array is formed by joining the ends of the spectacle-shaped coils together, and thus is actually composed of a single insulated conductive wire. Therefore, the line voltage of the superposed armature coil array becomes minute.

This double-armed armature coil array is a double-armed armature coil array formed by arranging a plurality of predetermined n rows of parallel armature coils in parallel. The electrical insulation required between the opposing phases of the coil array can be reduced. As a result, it is possible to reduce the space occupied by the double polymer armature coil array.

Furthermore, when connecting the double-polymerized armature coil arrays with the current switching means, since each polymerized armature coil array is composed of one insulated conductor, both ends of each polymerized armature coil array are set to predetermined positions. It is possible to directly connect the terminals whose switching directions can be switched one after another in the order and frequency.

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

In the following description, when there are two types of drawings with the same drawing number, (a) and (b), (a) is a plan view and (b) is a side view.

I. Eyeglass-Shaped Armature Coil FIGS. 1A and 1B show an example of the structure of the eyeglass-shaped armature coil of the present invention (hereinafter, referred to as eyeglass-shaped coil).

In the figure, the eyeglass-shaped coil 101 having a coil pitch length Cp is
The first coil corresponding to a monocular with a coil pitch length Cp / 2
It is composed of 101a and the second coil 101b, and is formed by winding the insulated conductive wire 100 by the above manufacturing method. The innermost peripheral end portions of the first and second coils 101a and 101b, that is, both end portions of the insulated conductive wire 100 are hatched portions A ₁ and B ₁ , respectively.

Further, when the spectacle-shaped coil 101 is turned upside down around the central axis z, another spectacle-shaped coil 102 which is shown below with a Cp / 2 pitch shift is obtained. These eyeglass coils 101 and 10
The two are mirror-symmetrical to each other, and their correspondences are as follows.

Eyeglass-shaped coil 101 102 First coil 101a 102a Innermost peripheral end portion of the first coil A ₁ A ₂ Second coil 101b 102b Innermost peripheral end portion of the second coil B ₁ B _{2 The} above description Then, the coil 101a equivalent to one monocular
(102a) is the first coil and the coil 10 equivalent to the other monocular
The 1b (102b) is referred to as the second coil, but this is merely a convenient name. When actually manufacturing the spectacle-shaped coil 101 (102), the coil 101b (102b) may be used as a first coil and the coil 101b (102b) may be wound first. That is, the starting point of the winding start of the insulated wire 100 is the end A
Either ₁ (A ₂ ) or end B ₁ (B ₂ ) may be used.

Further, since the two eyeglass-shaped coils 101 and 102 are obtained by turning over each other, one type of eyeglass-shaped coil may be produced by the above manufacturing method.

Further, as the shape of the first and second coils 101a, 101b, 102a, 102b, as an example, a substantially rectangular shape in which four corners form an arc curve is shown, but the shape is not limited to this shape. For example, it may be a square, a circle, an ellipse, an oval, or the like.

II. Polymerized armature coils Two pairs of eyeglass-shaped coils 101, 102 obtained as described above
In such a manner that the first coils 101a and 102a are overlapped with each other and the ends A ₁ and A ₂ are overlapped with each other in two steps and one row, and the ends A ₁ and A ₂ are electrically connected. When connected and wired, the coil pitch length is 3C as shown in Fig. 2 (a) and (b).
A pair of p / 2 overlapping eyeglass-shaped armature coils (hereinafter referred to as overlapping coils) 201 can be formed. In addition, the illustrated overlapping coil 201
In the figure, the eyeglass-shaped coils 102 are superposed on each other. As described above, the overlapping armature coil 201 includes the eyeglass-shaped coils 101 and 102, the first coils 101a and 102a, and the end portions A ₁ and A ₂ thereof.
Are overlapping. However, the second coils 101b and 102b
And its ends B ₁ and B ₂ are not polymerized.

III. Stacked armature coil array A plurality of stacked armature coils 201 are shown in FIG.
By arranging them in a line in the direction of arrow 202 and electrically connecting and connecting them as described later, one row of polymerized armature coil rows (hereinafter referred to as polymerized coil rows) 401A and 401B shown in FIG. 3 is obtained.

Note that, in FIG. 3 and FIG. 4 which will be described later, the overlapping coil rows 401A and 401B are shown divided into two stages for convenience of illustration.

Electrically connect multiple overlapping coil 201
When connecting the wires, the second of the odd-numbered overlapping armature coils 201
Coil 101b corresponding to the monocle of the present invention and the coil 102a equivalent to the second monocular of the even-numbered other overlapping coil 201 adjacent to the coil 101b.
Are overlapped with each other, and the ends B ₁ and B ₂ are overlapped with each other in a two-stage one-row manner, and the ends B ₁ and B ₂ are electrically connected and connected.

Although FIG. 3 shows an example in which the overlapping coils at both ends are not overlapped by the Cp / 2 coil pitch length, as shown in FIG. 4, the windings having the Cp / 2 coil pitch length in the same winding direction are overlapped. You may connect.

IV. Double Overlap Coil Row Two rows of overlap coil rows 401A, 401 formed as described above
As shown in FIG. 3 and FIG. 4, by arranging the coils facing each other so as to be shifted to the left or right by the Cp / 4 coil pitch length, the double polymerization to be the traveling magnetic field medium of the present invention. Armature coil array (hereinafter referred to as a double polymer coil array)
402 is formed.

From the viewpoint of safety, it is necessary to interpose electrical insulators on both outer sides of the double-polymerized coil array 402, as in the above-mentioned conventional technique.

Further, as the current switching device 403, an example in which a forced commutation thyristor flip-flop type circuit is used is shown as in the above-mentioned prior art. The connection of the overlapping coil arrays 401A and 401B to the current switching device 403 is as follows.

One end of the overlapping coil array 401A is electrically connected / connected to the circuits 403A and 403D on the positive power supply side of the current switching device 403, and the other end is electrically connected / connected to the circuits 403B and 403C on the positive power supply side of the current switching device 403.

On the other hand, one end of the overlapping coil array 401B is a negative power supply side circuit 403E, 403H of the current switching device 403, and the other end is a negative power supply side circuit 403F,
Electrically connects and connects to the 403G.

Further, the circuits 403C and 403D on the positive power supply side and the circuits 403E and 403F on the negative power supply side of the current switching device 403 are electrically connected and connected as shown in the figure.

In the current switching unit 403 thus connected, assuming that the circuits 403A, 403C, 403E, and 403G that are now filled in with black are in the conducting state, the conducting direction of the overlapping coil rows 401A and 401B is indicated by an arrow. That's right. This overlapping coil row 401
A continuous traveling magnetic field is obtained by switching (commutating) the conduction direction of A and 401B by the current switching device 403 in order for a predetermined time.

Incidentally, in the above embodiment, the double-coiled coil row is shown as consisting of two rows of superposed coil rows 401A, 401B as a simplified model, but the present invention is not limited to two rows, and a plurality of predetermined n rows Can be used.

EFFECTS OF THE INVENTION Since the present invention is configured as described above,
The following effects are achieved.

The spectacle-shaped coil simultaneously provides two coils whose current directions are opposite to each other by a simple structure in which one insulated wire is wound around the first and second coils.
According to this structure, a lead wire for electrically connecting and connecting the two coils is unnecessary, and an intervening electrical insulator, which has been conventionally required, is also unnecessary. Furthermore, since it is not necessary to fit the two coils, high dimensional accuracy as in the conventional case is not required when molding the coils. Therefore, there is an effect that manufacturing is facilitated by eliminating these lead wires and decreasing required dimensional accuracy.

Further, the superposed coil in which the spectacle-shaped coils are superposed in two rows and one line is, in effect, one piece of insulated conductive wire.

Therefore, the overlapped coil row in which this overlapped coil is joined is
In fact, since it consists of one insulated conductor, the line voltage of the superposed coil array is also very small. Therefore, there is an effect that the number of electrical insulators is small. In addition, enamel insulation is sufficient as the electrical insulation in this case.

The double superposed coil row in which a predetermined plurality of n superposed coil rows are arranged in parallel has an effect that the structure is simple and the forming work is facilitated by the configuration of the above-mentioned eyeglass-shaped coil, superposed coil, and superposed coil row. . Also, for the same reason, it is possible to reduce the interposition of an electrical insulator required between the opposite phases of the two superposed coil rows. After all, between the opposite phases of the two overlapping coil arrays, there should be a current switching (commutation) voltage of the current switching device and an electric insulator intervening enough to withstand the speed electromotive force due to the moving speed of the magnetic flux (magnet). It will be good. With the decrease in the electrical insulator, there is an effect that the occupied space of the double polymerized coil array is significantly reduced as compared with the conventional combined armature coil array.

[Brief description of drawings]

FIG. 1 (a) is a plan view showing an eyeglass-shaped armature coil according to the present invention, FIG. 2 (a) is a plan view showing the same superposition coil, and FIG. 1 (b) and FIG. 2 (b) are 1 and 2 are cross-sectional views corresponding to FIGS. 1 (a) and 2 (a), FIGS. 3 and 4 are diagrams showing a superposition coil array and a double superposition coil array according to the present invention, and FIG. 6 and 6 are explanatory views showing a conventional example, respectively. 100 ... Insulated conductors 101, 102 ... Spectacle-shaped armature coils 101a, 102a ... First coil equivalent to one eyeglass 101b, 102b ... Second equivalent coil to eyeglass 201 ... Overlap coil 401A, 401B ... Overlap coil array 402 ... Double-stacked coil array 403 ... Current switching device 403A to 403H ... Circuit of current switching device In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (5)

[Claims] 1. An eyeglass-shaped armature coil having a predetermined coil pitch length Cp, which is formed by continuously winding a single insulated wire from a starting end portion to a terminating end portion in a pair of substantially spectacle shapes on the same plane, wherein: The first coil, which corresponds to one of the pair of spectacles, is wound in a spiral with a coil pitch length Cp / 2 with one end of the insulated conductor being the innermost peripheral end, and the other end is the innermost end. It comprises a second coil corresponding to the other one of the spiral glasses having a coil pitch length Cp / 2 as a peripheral end portion, and the winding direction of these first and second coils is the same as that of the insulated conductor. A pair of eyeglass-shaped armature coils, which are in mutually opposite directions when viewed from one of the ends. 2. A single insulated conductor is continuously wound in a pair of substantially spectacles on the same plane from a starting end portion to a terminating end portion,
When manufacturing a pair of eyeglass-shaped armature coils having a predetermined coil pitch length Cp, the coil pitch length Cp is either clockwise or counterclockwise with one end of the insulated conductor being the innermost peripheral end. By forming a spiral coil of 1/2, a first coil corresponding to one of the pair of monoculars is formed, and continuously from the winding end of the first coil to the other end of the insulated conductor. In the opposite direction to the winding direction, and by winding the other end of the insulated conductor as the innermost peripheral end in a spiral with a coil pitch length Cp / 2, it corresponds to the other monocular. A method of manufacturing a pair of eyeglass-shaped armature coils, which comprises forming a second coil. 3. A polymerized armature coil formed by stacking two pairs of the eyeglass-shaped armature coils according to claim 1 in the thickness direction, wherein the two pairs of eyeglass-shaped armature coils are mirror symmetrical to each other. So that the coil pitch length Cp of each coil is evenly divided and turned around the central axis, and each eyeglass-shaped armature coil has the same coil pitch length Cp / Two pairs of spectacle-shaped armature coils mutually have a coil pitch length Cp so that the parts corresponding to the two monoculars overlap each other, and the innermost peripheral ends of the parts corresponding to the one pair of glasses overlap each other. A superposed armature coil, wherein the superposed armature coils are arranged so as to be shifted by / 2 and are stacked in two rows and one row, and both innermost peripheral end portions of the overlapping portions are electrically connected. 4. A polymerized armature coil array in which a predetermined plurality of polymerized armature coils of the same shape are electrically connected in a row on a non-polymerized side, and adjacent polymerized armatures are provided. Coil pitch length on non-overlapping side of coil
Cp / 2 so that the parts corresponding to one eyeglass overlap with each other in their thickness direction, and so that the innermost peripheral end of the part corresponding to this one eyeglass overlap, the two overlapping armature coils A superposed armature coil array, characterized in that they are overlapped in the thickness direction, and both of the overlapping innermost peripheral end portions are electrically connected. 5. A compound polymer armature coil array comprising a predetermined plurality of polymerized armature coil arrays n arranged in parallel, wherein the n polymerized armature coil arrays are relative to each other. A double-polymer armature coil array, in which coils having a coil pitch length Cp are arranged side by side with a coil pitch length Cp / 2n shifted in the column direction.