JP2012157183A - Unit coil, coil assembly, and coil-less type linear motor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a unit coil, a coil assembly, and a coil-less type linear motor.SOLUTION: A unit coil 4 in the present invention of a unit coil, a coil assembly, and a coil-less type linear motor, has a plurality of sub coils arranged in parallel to each other and having curvature on an axial direction non-acting side respectively. A coil assembly 3 has a plurality of three-phase unit coil modules 31 arranged along the axial direction. Each of the three-phase unit coil modules 31 is configured so that the three homologous unit coils 4 are arranged while intersecting and overlapping with each other and encapsulated by a resin layer 32. In the unit coil 4, the plurality of curved sub coils are arranged while overlapping with each other. By overlapping the plurality of curved sub coils, a sufficient thickness is obtained, and a sufficient thrust is achieved. A coil-less type linear motor 1 is formed to correspond to a magnetization rail 2. Such the unit coil 4 composed by the intersection effectively reduces a required space, and facilitates molding of the sub coils, which makes the sub coils less likely damaged.

Description

The present invention relates to a unit coil, a coil assembly, and a coilless type linear motor. In particular, a plurality of unit coils are arranged in parallel to each other, and each includes at least one curved subcoil on an axial non-working side. And a coilless linear motor unit including a coil assembly and a magnetized rail, and a coil assembly and a coilless linear motor.

Conventional coilless type linear motor coil arrangement methods are classified into three types: non-overlapping concentrated windings, overlapping concentrated windings, and printed circuit boards.

21 and 22 show an arrangement system of the concentrated coil units. That is, a plurality of unit coils 10 are assembled and arranged, and each unit coil represents a phase U, V, and W of the linear motor, and the magnetic poles of the permanent magnet 101 are made to correspond to this to generate a propulsive force. The difference between the non-overlap type shown in FIG. 21 and the overlap type shown in FIG. 22 is whether or not the unit coils overlap with each other when arranged.

The printed circuit board arrangement method shown in FIG. 23 uses a circuit board manufacturing technique to mold the coil 102 on the upper surface of the circuit board 103. The printed circuit board arrangement is based only on designs with low propulsive force because it is based on space and the limitation on the number of possible turns of the coil.

The arrangement method of non-overlapping concentrated windings can generate a larger driving force, but still cannot be effectively operated because there is a lot of space in the hollow part of the coil. The overlapping concentrated winding arrangement method can fill the space that cannot be operated in the non-overlapping concentrated winding arrangement method, which is superior to the printed circuit board arrangement method and the non-overlapping concentrated winding arrangement method. The maximum driving force can be generated in the smallest space.

There are many conventional overlapping concentrated winding arrangement methods. In the unit coil arrangement method disclosed in Patent Document 1, three unit coils are arranged in order and fixed to an insulating component to form a flat three-phase unit coil module. Furthermore, a plurality of flat three-phase unit coil modules are arranged to form a linear motor coil assembly. Based on this scheme, more flat three-phase unit coil modules need to be combined if they are to produce greater thrust. However, if it does so, the weight of a linear motor coil assembly will increase, and the insufficient strength of the joining position between each flat three-phase unit coil module will lead to a reduction in rigidity.

In response to the above-described drawbacks, the coil arrangement method disclosed in Patent Document 2 improves the method of overlapping unit coils. The unit coil is a sealed circuit composed of two vertical working sides and two axial non-working sides. After the unit coil is appropriately bent, the unit coil intersects and overlaps in the non-active side in the axial direction, and is closely arranged in the axial direction to constitute a three-phase unit coil module. Similarly, the plurality of three-phase unit coil modules are arranged so as to overlap each other in the axial direction and form a coil assembly. Thereby, the problem of insufficient rigidity at the connection position between the flat three-phase unit coil modules described above does not occur, and the disadvantage that the weight of the linear motor coil assembly is heavy can be improved.

Since the unit coil produces a larger driving force, a larger number of windings is required, thereby increasing the thickness or width of the unit coil. And the thick unit coil will raise the difficulty of bending molding. Separately, the thickness after bending the unit coil is at least 1.5 times the thickness of the original unit coil. Therefore, when the purpose of overlapping is achieved and combined into a linear motor coil assembly, the unit coils are connected in series and parallel, and the space left in advance is used as the position for arranging the wiring. A larger space is required. Therefore, the total thickness of the non-operating side position in the axial direction of the coil assembly is at least the thickness of the wiring space secured in advance plus twice the thickness of the unit coil. Furthermore, when the unit coil having a wider width is curved toward the non-working side in the axial direction, the width is completely increased by the coil length, and a larger space is required in terms of the length.

A conventional single molded unit coil 7 shown in FIG. 24 is arranged in an overlapping manner to form a three-phase unit coil module 31. That is, the thickness of the non-acting side in the axial direction of the unit coil 7 is twice the T6 plus the wiring space thickness T7 secured in advance. However, as the thickness T6 of the molding unit coil 7 increases, molding becomes more difficult, and the difference between the inner curved radii R31, R33 and the outer curved radii R32, R34 becomes larger, and the relatively smaller inner curved radius R31. R33 causes the influence of insulation failure.

As shown in FIGS. 25 and 26, if the width of the unit coil 8 is relatively wide and the width is W3, the coil width is completely the height W3 of the two non-acting sides in the axial direction after the coil molding. . Therefore, the height of the entire coil is increased, and at the same time, the combined height of the linear motor coil assembly 3 shown in FIG. 1 is increased.

As shown in FIGS. 27 and 28, the subcoil 9b shows a conventional winding method and employs a vertical overlap method. Therefore, the hollow portion 92 is not gradually reduced, and is vertically upward, that is, the length of the coil hollow portion is L4 = L5. Thus, after the coil 9b is formed by bending, the end portion of the axially inactive side 93 ′ of the conventional molded subcoil 9b ′ shown in FIG. 29 is inclined. The cause is that the inner and outer lengths of the molded coil 9b ′ are homologous, that is, L4 ′ = L5 ′, the outer length L5 ′ has a relatively large curvature radius R5 ′, and the inner length L4 ′ has a curvature. The radius R4 ′ is relatively small, and the outside of the axially inactive side 93 ′ of the molded coil 9b ′ is contracted compared to the inside (see FIG. 30). The thickness of the linear motor coil assembly 3 needs to be increased according to the axially inactive side 93 ′ having an inclined shape.

As a tangential method between unit coils constituting a conventional coil assembly, the method shown in FIGS. The equivalent circuit series tangent system shown in FIG. 31 can produce a relatively large thrust. The equivalent circuit parallel tangent system shown in FIG. 32 can produce a relatively high speed. The equivalent circuit series-parallel tangent system shown in FIG. 33 can produce linear motors with various characteristics. However, the above-described tangent method is applied only to the tangent line between unit coils, and when the expected linear motor characteristics cannot be achieved, another method must be used. The present invention has been made in view of the above-described drawbacks of conventional unit coils, coil assemblies, and linear motors.

U.S. Pat.No. 4,758,750 International Patent Publication No. 2004/017500 A1

The first problem to be solved by the present invention is that a plurality of unit coils are arranged in parallel with each other, and each has a sub-coil that is curved in the non-operating side in the axial direction, whereby the thickness of the sub-coil can be reduced. To provide a unit coil that can increase the radius of curvature, reduce the difficulty of bending the subcoil, and facilitate manufacture.
In addition, the second problem to be solved by the present invention is that the unit coil constituting the coil assembly can be easily molded regardless of its thickness. Thus, it is intended to extend the service life of the subcoil and provide a coil assembly design for use in linear motors.
In addition, the third problem to be solved by the present invention is to effectively reduce the necessary thickness of the non-working side in the axial direction when bending the coil, or the required length of the non-working side in the axial direction when bending. It is to provide a coil assembly design that can provide a reduced coil assembly.
Furthermore, a fourth problem to be solved by the present invention is to provide a coilless type linear motor that saves more space.

In order to solve the above problems, the present invention provides the following unit coil, coil assembly, and coilless type linear motor.
The unit coil includes a plurality of subcoils, and the subcoil continuously wraps the insulated conductive wire to form an annular body, and includes a vertical working side and an axial non-working side. The sub-coil having at least one curve and parallel to each other, and the plurality of the sub-coils are arranged in parallel with each other. The sub-coils to be arranged are composed of a plurality of sub-coils of equal thickness intersecting in the width direction and closely arranged in parallel, and the sub-coils arranged in parallel to each other are concentric with a plurality of sub-coils having different widths. Arranged in parallel with each other, the axially inactive side of the sub-coil has at least one curve, and the axially inactive side has a uniform shape,
The coil assembly includes a plurality of three-phase unit coil modules arranged in an axially intersecting and overlapping manner, and a resin layer that encloses the three-phase unit coil modules. A unit coil is provided, and each set of unit coils includes a plurality of sub-coils arranged in parallel to each other, and each having a sub-coil having at least one curve on the non-operating side in the axial direction. A plurality of sub-coils having equal widths are arranged in parallel in the thickness direction, and the sub-coils are arranged in parallel to each other. A plurality of sub-coils having the same thickness intersect in the width direction and are closely parallel. A plurality of subcoils arranged and arranged in parallel with each other, and a plurality of subcoils having different widths are arranged concentrically and arranged in parallel. The axially inactive side of the coil has at least one curve, and the axially inactive side has a uniform shape, and the coilless linear motor includes a magnetized rail and a coil assembly. Includes a plurality of permanent magnets in which S poles and N poles are alternately arranged, and a working space is previously installed between the plurality of permanent magnets in which S poles and N poles are alternately arranged. A plurality of three-phase unit coil modules that intersect and overlap in the axial direction, and a resin layer that encloses the three-phase unit coil modules, the resin layer being located in the working space of the magnetization rail, The three-phase unit coil module includes three sets of homologous unit coils, and a plurality of the unit coils are arranged in parallel to each other, and each has at least one curve on the non-working side in the axial direction. The sub-coil includes a plurality of sub-coils, and the plurality of sub-coils having the same width are arranged in parallel in the thickness direction and are arranged in parallel. The two curves have a similar radius of curvature, and in the plurality of subcoils, the vertical length of the upper subcoil is shorter than the vertical length of the lower subcoil, and the unit coil The coil cross-sectional area of the non-acting side in the axial direction of the upper layer subcoil is located on the total thickness of the unit coil, and the plurality of subcoils arranged in parallel with each other are arranged in the width direction. A subcoil that intersects and is closely arranged in parallel and is composed of a plurality of subcoils that are arranged in parallel to each other is composed of a plurality of subcoils having different widths arranged concentrically and in parallel. Each sub-coil tangent system of the coil is a series, parallel, or series-parallel mixed tangent, after adopting the above solution,
The coilless linear motor provided by the present invention includes a magnetized rail and a coil assembly, and the magnetized rail includes a plurality of permanent magnets in which S poles and N poles are alternately arranged, and S poles and N poles are alternately arranged. An action space is preliminarily provided between the plurality of permanent magnets that constitute the aligned magnetic field areas, and the S poles and N poles are alternately arranged, and the coil assemblies are arranged in an axially overlapping manner so as to intersect with each other. Three-phase unit coil module, and a resin layer enclosing the three-phase unit coil module, the resin layer is located in the working space of the magnetized rail, and the three-phase unit coil module has three overlapping intersections Homologous unit coils arranged in parallel, and each of the unit coils includes a plurality of sub-coils arranged in parallel with each other and each having a curvature on a non-acting side in the axial direction. The coil generates flux through three-phase current control, generates the magnetic field and driving force of the magnetized rail, moves relative to each other, and if the magnetized rail is fixed and used as a stator, the coil assembly becomes a rotor, and vice versa. When the coil assembly is fixed and used as a stator, the magnetized rail becomes a rotor, the unit coil includes a plurality of subcoils, and each of the plurality of subcoils continuously winds an insulated conductive wire, It is provided with a vertical working side and an axial non-working side, the axial non-working sides of the plurality of subcoils are further provided with a curvature, and are arranged in parallel with each other, wherein the mutual parallel arrangement is provided here. Includes the following forms, and a plurality of sub-coils having the same width are arranged in parallel in the thickness direction, and a plurality of sub-coils having the same thickness intersect in the width direction. Moreover disposed closely parallel to, the plurality of sub-coils of different widths, in parallel arranged concentrically,
In other words, the unit coil is configured by arranging a plurality of subcoils in a thickness direction by combining a plurality of relatively thin subcoils having a curvature on the non-operating side in the axial direction by a method of arranging and composing a plurality of subcoils after the bending. In the same way, a thick unit coil is composed, and the thickness of the sub-coil is relatively thin, and the required radius of curvature of the curvature increases, so that the difficulty of curving the coil can be greatly reduced. Easy to manufacture,
In addition, the curvature radius of the curvature required for the relatively thin sub-coil becomes larger, and the sub-coil is less likely to break due to curve molding at the bending position, and the sub-coil has thermal energy generated by current passage. However, it is difficult to accumulate in the curved position of the subcoil, thereby extending the service life of the subcoil and the unit coil composed of overlapping,
The thickness of the unit coil composed of overlapping subcoils with relatively thin thickness is not limited, and according to the required driving force, the subcoils are stacked to form a unit coil with sufficient thickness. The coil is not too thick and difficult to bend,
The upper layer subcoil of the plurality of subcoils composing the unit coil is appropriately shortened in the vertical length, that is, the vertical length of the upper layer coil is shorter than the vertical length of the lower layer coil, and the unit coil The coil cross-sectional area of the non-acting side in the axial direction of the upper subcoil to be composed is located on the total thickness of the unit coil, so that the thickness of the entire unit coil after combination can be reduced,
The unit coil is composed of a plurality of sub-coils that are curved in the axial non-operation side by closely arranging the plurality of sub-coils after being bent. By constructing a wide unit coil and overlapping the non-acting side in the sub-coil axial direction in the thickness direction, the need for the vertical length of the combined unit coil is reduced, thus requiring the total height of the linear motor coil assembly Can be adjusted moderately,
The unit coil has a plurality of sub-coils that are curved and arranged in a non-working side in the axial direction by a method of arranging a plurality of sub-coils after bending. Depending on the system, the unit coil is composed of the same thickness and relatively wide width.
By overlapping in the axial non-working side thickness direction, the need for the vertical length of the combined unit coil can be reduced without increasing the thickness, and the total height requirement of the linear motor coil assembly can be adjusted appropriately.
The unit coil can achieve the object of the present invention by a system in which a plurality of subcoils are arranged after bending, or by using the two systems in combination.
Before the subcoil is bent, it preferably exhibits a shape that gradually decreases along the direction of the thickness in the axial non-working side,
When the subcoil has a shape that gradually decreases along the direction of thickness along the axially inactive side before bending, the subcoil can be neatly arranged after bending, and when the subcoil is wound, after expected bending Depending on the size of the coil, the thickness of the subcoil is pre-wound into a shape that gradually reduces,
The definition of the gradual reduction is that the vertical length on one side is longer than the vertical length on the other side in the coil thickness direction, so the vertical length along the thickness direction of the subcoil gradually increases. Reduced to
The sub-coil in which the thickness direction before bending gradually decreases is formed after the curve molding, and the non-acting side in the axial direction of the molded sub-coil becomes a uniform shape.
Since the unit coil is composed by arranging a plurality of subcoils in parallel, each subcoil tangent of the unit coil can be used flexibly. For example, in a situation where currents such as phases are provided to the coil assembly, The thrust constant of the motor coil assembly is larger than the parallel tangent method,
In contrast, the back electromotive force constant generated by the linear motor coil assembly composed by the parallel tangent method is smaller than the series method,
Another type is a series-parallel mixed tangent method, which produces different thrust constants and back electromotive force constants based on the results of the equivalent circuit,
In general, linear motors adopt series, parallel, and series-parallel mixed tangent methods for tangent lines between unit coils, and constitute linear motors with different characteristics.
The present invention is divided into series, parallel, and series-parallel mixed tangents even in the tangent of each sub-coil composing the unit coil,
If a parallel system is adopted for each sub-coil tangent in the unit coil, the linear motor produces relatively high speed,
On the other hand, if a series system is adopted for each subcoil tangent of the unit coil, the linear motor produces a relatively large thrust,
Therefore, a linear motor characteristic with a wider range can be achieved by the series, parallel, or series-parallel mixed tangent line between the subcoils of the unit coil.

The unit coil composed by utilizing the system in which the unit coil, the coil assembly and the coilless type linear motor intersect and overlap each other effectively reduces the necessary space of the coil assembly and facilitates the molding of the subcoil. And it can make it hard to break.

It is the combination figure of the magnetization rail and coil assembly of a coilless type linear motor. It is a schematic diagram which shows the arrangement | sequence of a coilless type linear motor magnetization rail permanent magnet. It is a coil assembly structure figure of the coilless type linear motor which this invention discloses. FIG. 4 is a local enlarged view of a portion A in FIG. 3. It is the combination figure of the unit coil module 1st Example of the coilless type linear motor which this invention discloses. It is sectional drawing in the AA position of FIG. It is a combination figure of the three-phase unit coil module of the coilless type linear motor which this invention discloses. FIG. 8 is a top view of FIG. 7. FIG. 8 is a front view of FIG. 7. It is sectional drawing of the coilless type linear motor unit coil 2nd Example which this invention discloses. It is a combination diagram of a coilless type linear motor unit coil third embodiment disclosed in the present invention. It is sectional drawing in the BB position of FIG. It is a combination figure of the three-phase unit coil module after a combination. It is a combination figure of the coilless type linear motor unit coil 4th Example which this invention discloses. It is sectional drawing in CC position of FIG. It is a combination figure of the three-phase unit coil module after a combination. It is a front view of the subcoil which exhibits the shape which the thickness which this invention discloses reduces gradually. It is sectional drawing in the DD position of FIG. It is an external view of the shaping | molding coil in FIG. It is sectional drawing in the EE position of FIG. It is a schematic diagram which shows the coil arrangement | sequence system of a non-overlapping concentrated winding. It is a schematic diagram which shows the coil arrangement | sequence system of an overlap concentrated winding. It is a schematic diagram which shows the coil arrangement | sequence system of a printed circuit board. 1 is a front view of a conventional overlapping concentrated coil assembly. FIG. It is a schematic diagram of a conventional relatively wide molded unit coil. It is sectional drawing in the FF position of FIG. It is a front view of the conventional coil. It is sectional drawing in the GG position of FIG. It is a perspective view of the conventional shaping | molding coil. It is sectional drawing in the HH position of FIG. It is a schematic diagram of the equivalent circuit of the subcoil series tangent of a unit coil. It is a schematic diagram of the equivalent circuit of the subcoil parallel tangent of a unit coil. It is a schematic diagram of the equivalent circuit of the subcoil series parallel mixed tangent of a unit coil.

The best mode for carrying out the present invention will be described in detail below with reference to the drawings.

As shown in FIG. 1, the coilless type linear motor 1 includes a magnetized rail 2 and a coil assembly 3. The magnetized rail 2 includes a plurality of permanent magnets 21 in which S poles and N poles are alternately arranged, and forms a magnetic field area in which S poles and N poles are alternately arranged as shown in FIG. As shown in FIGS. 3 and 4, the coil assembly 3 is configured by a plurality of three-phase U, V, and W unit coil modules 31 crossing each other and arranged in the axial direction, and further encapsulated by a resin layer 32.

As shown in FIGS. 5 and 6, in the first embodiment of the present invention, two subcoils 41 and 42 having different curvatures on the non-working sides in the axial direction and having thicknesses T1 and T2 are overlapped and the width is the same. The unit coil 4 having a thickness of T1 + T2 is composed. Since the thicknesses of the subcoils 41 and 42 are relatively thin, the curve molding is easy. In this embodiment, the lower layer sub-coils 42 and 41 are provided with a plurality of sub-coils that are curved along two or more axially non-acting sides, stacked in the thickness direction, the same width, and a thick unit coil. It can also be composed. Since the subcoil thickness is relatively thin, the difference between the radius of curvature R11-R12, R13-R14, R21-R22 and R23-R24 inside and outside the subcoils 41 and 42 is relatively small, and therefore good after molding. The insulation effect can be maintained, molding is easy, and it is difficult to break.

As shown in FIG. 5, the width of the unit coil 4 is W1, the width of the hollow portion 43 is W2, and W2 is at least twice W1. As shown in FIGS. 7, 8 and 9, the unit coils 5 and 6 and the unit coil 4 are homologous, and the unit coil 4 representing the W phase is placed in the opposite direction. The vertical working sides 44 face upward, and two vertical working sides 54 and 64 of the unit coil 5 representing the U phase and the unit coil 6 representing the V phase are arranged closely in parallel. Next, a three-phase unit coil module 31 that is placed in the hollow portion 43 of the unit coil 4 and arranged so as to cross each other is formed. The total thickness and the unit coils 4, 5, and 6 are homologous, so that by analogy, a plurality of three-phase unit coil modules 31 are similarly joined tightly crossing in the axial direction, and the linear motor The coil assembly 3 is configured.

The unit coil 4 in which a plurality of layers shown in FIG. 5 are combined can be further improved to form a second embodiment shown in FIG. At that time, the lower layer subcoil 41 is not changed, and the length of the upper layer subcoil 42 is shortened to form a relatively short subcoil 42 'to form a unit coil 4'. The coil cross-section 421 ′ of the axially non-acting side of the relatively short subcoil 42 ′ is formed when the three-phase coil module 31 is formed by crossing the unit coils 4 ′ on the entire thickness T1 + T2 of the unit coil. Interference can be avoided. Thus, the thickness T6 + T7 of the non-acting side in the axial direction of the unit coil 4 that has been originally completed can be shortened to T6 ′ + T7, and thus the thickness when the linear motor coil assembly 3 is completed can be reduced.

As shown in FIG. 11, the third embodiment of the present invention is a unit coil having a relatively wide width by combining two subcoils 71 and 72 arranged closely intersecting in the axial direction. Configure 7a. Of these, the sum of the widths of W4 and W5 is homologous to W3 in FIG. The molded subcoils 71 and 72 include hollow portions 711 and 721. The vertical working side 722 of the subcoil 72 is installed in the hollow portion 711 of the subcoil 71 and is brought close to the vertical working side 712 of the subcoil 71. 72, the upper edges of the vertical working edges 712 and 722 are matched to form a unit coil 7a.

When the conventional unit coil 8 in FIG. 25 and the unit coil 7a of the present invention are compared, the length W4 from the coil bending position of the unit coil 7a to the non-active side in the axial direction is from the coil bending position of the unit coil 8 to the axial direction. It is smaller than the length W3 to the non-working side, that is, the combined height of the coil assembly 3 can be shortened. Of these, the reduced length W5 can be distributed to the increase in thickness, and thus the altitude and the increase in thickness can be adjusted. The above-mentioned two subcoils 71 and 72 have the same thickness in which a plurality of subcoils having two or more curvatures on the non-operating side in the axial direction are closely arranged crossing the axial direction and are relatively wide. Can be a wide unit coil 7a.

FIG. 11 is a simple schematic diagram, and the actual bending angles of the two relatively narrow subcoils 71 and 72 in the drawing are not limited to 90 degrees. As shown in FIG. 13, the three-phase unit coil module 31 ′ can be composed by combining the unit coils 7 a, 7 b, and 7 c using the above-described method of composing the three-phase unit coil module 31.

In the fourth embodiment of the present invention, as shown in FIG. 14, the width is divided into an outer ring subcoil 81 and an inner ring subcoil 82. Among them, the inner ring subcoil 82 having the width W5 is arranged and combined in the hollow portion 811 of the outer ring subcoil 81 having the width W4 to form the unit coil 8a having the same thickness and the width W3 (see FIG. 14). In this implementation method, not only can the length from the coil bending position of the unit coil 8a to the axially inactive side be reduced to W4, but also the axially inactive side thickness can be maintained at W5 (see FIG. 15). ). In the embodiment described above, two or more annular subcoils having different sizes can be arranged concentrically and combined to form a unit coil 8a having the same thickness and a relatively wide width. In the same manner, the unit coils 8b and 8c can be combined, thus forming a three-phase unit coil module 32 ′ (see FIG. 16).

As shown in FIG. 17, when winding the subcoil 9a of the present invention, the hollow portion 91 of the subcoil 9a may be wound in advance in a shape that gradually decreases along the thickness direction based on the expected shape after bending. it can.
That is, L2> L1, where L2 = L1 + (R2′−R1 ′) π. Thus, after the subcoil 9a is curved and formed into the subcoil 9a ′, the length of the hollow portion of the subcoil 9a ′ is still maintained at L1 = L1 ′, L2 = L2 ′, and L3 = L3 ′. Among them, L1 ′ has already shortened the total length (R2′−R1 ′) π of the subcoil axial non-operating side 92 ′, so that the axial non-active side 92 ′ of the molded subcoil 9a ′ is aligned. It becomes a shape. This improvement is advantageous in reducing the combined arrangement and thickness of the linear motor coil assembly 3.

As described above, the unit coil in the present invention includes a plurality of sub-coils arranged in parallel with each other, and is displayed by the equivalent inductive circuit devices 111, 112, 113, and 114 shown in FIGS. The sub-coil tangent system of the unit coil can be a series tangent shown in FIG. 31, a parallel tangent shown in FIG. 32, or a series / parallel mixed tangent shown in FIG. Among them, the thrust constant generated by the series tangent shown in FIG. 31 is relatively large. On the other hand, the counter electromotive force constant of the parallel tangent shown in FIG. 32 is relatively small. As shown in FIG. 33, the unit coil composed of four subcoil modules has the subcoils 111 and 112 of the unit coil in series, the subcoils 113 and 114 in series, and the two series circuits in parallel. To do. This tangential method can adjust the thrust constant and the counter electromotive force constant, and can achieve the necessary linear motor characteristics.

The above-mentioned names and contents of the present invention are only used for explaining the technical contents of the present invention, and do not limit the present invention. All equivalent applications or parts (structures) conversion, replacement and increase / decrease in quantity based on the spirit of the present invention shall be included in the protection scope of the present invention.

The present invention has the novelty that is a requirement of patents, has sufficiently advanced as compared with conventional similar products, has high practicality, meets the needs of society, and has a great industrial utility value.

1: Coilless type linear motor
2: Magnetized rail
3: Coil assembly
4, 5, 6, 7, 8: Unit coil
4 ': Unit coil
7, 7a, 7b, 7c: Unit coil
8, 8a, 8b, 8c: Unit coil
9a: Sub-coil where coil hollow part gradually shrinks
9b: Conventional subcoil
9a ': Molded subcoil that has a shape with non-acting sides in the axial direction
9b ': Conventional molded subcoil
10: Unit coil
21: Permanent magnet
31: Three-phase unit coil module
31 ': Three-phase unit coil module
32: Resin layer
32 ': Three-phase unit coil module
41: Lower layer subcoil
42: Upper layer subcoil
42 ': relatively short subcoil
43: Hollow part of unit coil 4
44: Vertical working side of unit coil 4
53: Hollow part of unit coil 5
54: Vertical working edge of unit coil 5
63: Hollow part of unit coil 6
64: Vertically acting side of unit coil 6
71, 72: Subcoil with relatively narrow width
81, 82: Subcoil with relatively narrow width
91, 92: Subcoil hollow part
92 ', 93': Non-acting side in the axial direction of the subcoil
101: Permanent magnet
102: Coil
103: Circuit board
111, 112, 113, 114: Coil equivalent inductive circuit devices
421 ': Sub-coil coil cross-sectional position that is relatively short
711, 721: Subcoil hollow part with relatively narrow width
712, 722: Subcoil vertical working side with relatively narrow width
811, 821: Sub coil hollow part with relatively narrow width
812, 822: Subcoil vertical working side with relatively narrow width
A: Local enlarged view of coil assembly
L1, L4: Length of one side of sub coil hollow part
L2, L5: Length of the other side of the hollow part of the subcoil
L3, L6: Subcoil stacking lacquer wire thickness
L1 ', L4': Length of molded subcoil hollow part on one side
L2 ', L5': Length of the other side of the hollow part of the molded subcoil
L3 ', L6': Thickness of stacking lacquer wire for molded subcoil
R1 ', R2': Bending radius of coil
R4 ', R5': Curvature radius of conventional subcoil
R11, R12, R13, R14: Bending radius of the lower layer subcoil
R21, R22, R23, R24: Upper layer subcoil bending radius
R31, R32, R33, R34: Conventional single unit coil radius of curvature
T1: Lower layer subcoil thickness
T2: Upper layer subcoil thickness
T6: Unit coil thickness
T6 ': Unit coil axial non-working side thickness
T7: Thickness required for the space reserved in advance for the coil assembly wiring layout
U: Phase U
V: V phase
W: Phase W
W1: Sub coil width
W2: Width of the hollow part of the subcoil
W3: Width of single coil with relatively wide width
W4, W5: Width of molded subcoil with relatively narrow width

Claims (18)

The unit coil includes a plurality of subcoils,
The sub-coil continuously winds an insulated conductive wire, presents an annular body, and includes a vertical working side and an axial non-working side,
The sub-coil axial non-operation side has at least one curve and is parallel to each other. 2. The unit coil according to claim 1, wherein the plurality of sub-coils arranged in parallel with each other are composed of a plurality of sub-coils of equal width overlapping in the thickness direction. 2. The unit coil according to claim 1, wherein the plurality of sub-coils arranged in parallel with each other is composed of a plurality of sub-coils having the same thickness intersecting in the width direction and closely arranged in parallel. 2. The unit coil according to claim 1, wherein the plurality of sub-coils arranged in parallel with each other are composed of a plurality of sub-coils having different widths arranged concentrically in parallel. 2. The unit coil according to claim 1, wherein the axially inactive side of the sub-coil has at least one curvature, and the axially inactive side has a uniform shape. The coil assembly includes a plurality of three-phase unit coil modules that are arranged to intersect and overlap in the axial direction, and a resin layer that encloses the three-phase unit coil modules,
The three-phase unit coil module includes three sets of homologous unit coils, and each set of unit coils includes a plurality of sub-coils that are arranged in parallel with each other and that each have at least one curve on the non-active side in the axial direction. A coil assembly comprising: The coil assembly according to claim 6, wherein the plurality of sub-coils arranged in parallel with each other are composed of a plurality of sub-coils of equal width overlapping in the thickness direction. The coil assembly according to claim 6, wherein the plurality of sub-coils arranged in parallel with each other are composed of a plurality of sub-coils having the same thickness intersecting in the width direction and closely arranged in parallel. The coil assembly according to claim 6, wherein the plurality of sub-coils arranged in parallel with each other are composed of a plurality of sub-coils having different widths arranged concentrically in parallel. The coil assembly according to claim 6, wherein the axially inactive side of the sub-coil has at least one curve, and the axially inactive side has a uniform shape. The coilless type linear motor has a magnetized rail and a coil assembly.
The magnetized rail includes a plurality of permanent magnets in which S poles and N poles are alternately arranged, and an action space is previously installed between the plurality of permanent magnets in which S poles and N poles are alternately arranged.
The coil assembly includes a plurality of three-phase unit coil modules arranged to intersect and overlap in the axial direction, and a resin layer enclosing the three-phase unit coil modules,
The resin layer is located in a working space of the magnetized rail, the three-phase unit coil module includes three sets of homologous unit coils, and a plurality of the unit coils are arranged in parallel to each other, and each of the unit coils is axially arranged. A coilless type linear motor comprising a subcoil having at least one curve on a non-working side. The coilless linear motor according to claim 11, wherein the plurality of sub-coils arranged in parallel with each other are composed of a plurality of sub-coils of equal width overlapping in the thickness direction. 12. The coilless linear motor according to claim 11, wherein the non-acting sides in the axial direction of the plurality of subcoils have two curvatures, and the two curvatures have a similar radius of curvature. 12. The coilless linear motor according to claim 11, wherein, in the plurality of subcoils, the vertical length of the upper layer subcoil is shorter than the vertical length of the lower layer subcoil. The coilless linear motor according to claim 11, wherein the coil cross-sectional area of the non-acting side in the axial direction of the upper sub-coil of the unit coil is located on the total thickness of the unit coil. The coilless type linear according to claim 11, wherein the plurality of sub-coils arranged in parallel with each other are composed of a plurality of sub-coils having the same thickness intersecting in the width direction and closely arranged in parallel. motor. The coilless linear motor according to claim 11, wherein the plurality of sub-coils arranged in parallel with each other are composed of a plurality of sub-coils having different widths arranged concentrically in parallel. 12. The coilless linear motor according to claim 11, wherein each sub-coil tangent method of the unit coil is a series, parallel, or series-parallel mixed tangent.