JP2002352203A - Method for manufacturing antenna coil for non-contact ic card - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily manufacture an antenna coil for a non-contact IC card by a simple apparatus capable of easily obtaining a required impedance. SOLUTION: A coil wire w1 and a linear spacer member s is wound out from bobbins 4, 5 and wounded around a winding frame 1 by a required number of times at a state that they overlap each other. Thus, a spiral coil c1, in which the linear spacer member s is surely interposed between internal and external portions adjacent to the coil wire w1 and an interval for its dimension is held, is completed. The coil c1 is fixed by an adhesive agent applied in the case of winding out from the bobbin 4. The coil c1 taken out from the winding frame 1 is fixed onto a prescribed position on a substrate 8 by the adhesive agent.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing an antenna coil for a non-contact IC card, which reads and writes data in a non-contact manner via radio waves without connecting to a connector of a reader / writer.

[0002]

2. Description of the Related Art An antenna coil of this type is manufactured by etching a copper foil or the like adhered on a substrate chemically to form a coil, or in a spiral shape on a substrate by a heating means. There is known a method of manufacturing a coil by forming a continuous groove and embedding a wire in the groove at the same time as the formation of the groove.

In the former method using etching, there is a problem in that a desired impedance cannot be easily obtained in the obtained coil, and in addition, there is a serious problem in treatment of a chemical solution after implementation. In addition, the latter method is a method in which a groove is formed on a substrate and a wire is buried therein, as described above, so that it is necessary to employ a relatively thick member as the substrate. There is a problem that it cannot be implemented unless expensive equipment is used for the implementation. Furthermore, there is a question about the shape of the groove, its accuracy, and the relative position of the wire embedded in the groove, and as a result, there is a possibility that the impedance may vary.

As a method of manufacturing this kind of antenna coil, there is a method of manufacturing a chip card proposed by Japanese Patent No. 2810547 in addition to the above method. this is,
A method for manufacturing a chip card including a transponder unit having at least one chip and one coil, wherein the chip and the coil are arranged on a common substrate, and the coil is arranged by disposing the coil wire. And the connection between the end of the coil wire and the bonding pad of the chip is performed on the substrate, and when the coil wire is provided to form the coil, at least the bonding between the coil wire and the substrate is performed. Chip card manufacturing method performed in several places. "

According to this manufacturing method, the impedance required for the obtained coil can be obtained relatively easily, which is an excellent method. However, there is a problem that an expensive device is required to perform this method. .

[0006]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the prior art, and provides an antenna coil for a non-contact IC card in which a required impedance can be easily obtained and a simple device can be easily used. Contactless I which can produce
An object of the present invention is to provide a method for manufacturing an antenna coil for a C card.

[0007]

According to one aspect of the present invention, a coil wire is formed by superimposing one or more linear spacer members on a coil wire, and spirally winding the required number of turns on a winding frame member having a required diameter in this state. This is a method for manufacturing an antenna coil for a non-contact IC card by forming a coil having a shape like a letter and thereafter fixing the coil to a substrate.

According to a second aspect of the present invention, in the method for manufacturing an antenna coil for a non-contact IC card according to the first aspect of the present invention, a dielectric material is adopted as the linear spacer material.

According to a third aspect of the present invention, in the method of manufacturing an antenna coil for a non-contact IC card according to the first aspect of the present invention, a wire similar to the coil wire is employed as the linear spacer material.

According to a fourth aspect of the present invention, a plurality of branch winding frames having different diameters are concentrically arranged, and a branch winding frame on the center side thereof is sequentially projected axially one step from an outer branch winding frame. A multi-reel that is superimposed on the state, where each sub-reel can be advanced and retracted in the axial direction as necessary, and the front end face of all sub-reels can be made the same surface. Then, a coil wire is sequentially wound from the center branch winding frame to the outer branch winding frame or from the outer branch winding frame to the center branch winding frame so that a predetermined interval is provided between the inside and outside. To form a spiral coil,
A non-contact IC by moving each of the branch winding frames in the axial direction as necessary to remove the coil while fixing the front end surfaces of all the branch winding frames to the same surface and simultaneously fixing the coil to the substrate.
This is a method for manufacturing a card antenna coil.

According to a fifth aspect of the present invention, in the method for manufacturing an antenna coil for a non-contact IC card according to the fourth aspect of the present invention, there is provided a method for manufacturing the antenna coil for a non-contact IC card, wherein the coil wire is provided between the adjacent branch winding frames. A notch for transition to the shunt frame is formed.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the present invention, a spiral coil is formed by winding a linear spacer material on a coil wire and winding it on a winding frame member having a required diameter, and then fixing the coil to a substrate. A method of manufacturing an antenna coil for a non-contact IC card according to the present invention.

Needless to say, as the coil wire, a coil wire suitable for constructing a coil according to the purpose is used.

[0014] The linear spacer material is for appropriately maintaining a space between the inside and outside of the spiral coil when the coil wire is spirally wound around the winding frame member to form a coil. It is. Therefore, any linear member that can be wound on the winding frame member together with the coil wire and can be held at an appropriate interval while maintaining the inner and outer adjacent intervals of the coil in an insulating state.

As the linear spacer material, various wires made of a dielectric material or wires similar to the coil wires can be freely used. As described above, such a linear spacer material is for appropriately maintaining the space between the inside and outside of the coil formed in a spiral shape. Need to be However, if an appropriate distance cannot be ensured with one of them, an appropriate interval can be ensured by overlapping two or more lines.

Needless to say, the diameter and shape of the winding frame member are made to match the inner diameter and shape of the target coil. Further, when the coil wire member and the linear spacer material are spirally wound around the coil wire member, holding surfaces for holding the wound state so as not to be disturbed are radiated from both sides of the winding drum portion in a radial direction. Must be configured. Specifically, for example, the reel member is fixed to the center of one surface of the disk-shaped member, and another disk-shaped member is detachably contacted to the opposite side of the reel member. Can be configured. In a state where the other disk-shaped member is in contact with the opposite side of the winding frame member, the winding drum portion of the winding frame member will be located at the bottom of the space sandwiched between both disk-shaped members, The wound state of the coil wire and the linear spacer material wound on this is reliably maintained.

The spiral winding of the coil wire and the linear spacer material on the winding frame member may be performed by fixing the winding frame member and winding the coil wire or the like around the winding member. Good, but it is easier to set the coil wire and the linear spacer material so that they can be pulled out, rotate the winding frame member while pulling them out, and wind them around the winding drum section, which makes it easier to achieve spiral winding It is appropriate because it can.

As described above, the spiral coil configured as described above is thereafter detached from the winding frame member and fixed to the substrate, but at this time, the coil is not broken. It is desirable to be fixed with an adhesive or the like.

The above-described holding of the coil shape by the adhesive is performed by applying a heat-melted adhesive to the coil wire when winding the coil wire around the winding frame member.
At the time of winding, the coil wire and the linear spacer material can be bonded and fixed in the coil shape. Alternatively, a self-bonding wire to which a heat-meltable adhesive is adhered is adopted as the coil wire, and the coil wire is heated by hot air or the like, and then the winding operation is performed. The linear spacer material is bonded and fixed in a coil shape to be formed.

The substrate is a plate-like member for fixing the coil, and can be made of various materials according to the purpose. In addition, the thickness can be freely adopted from a plate-like thick one to a film-thin one literally. In this specification, the substrate is used as a concept including not only a plate-shaped member but also a flexible film-shaped member.

The coil constructed as described above can be fixed to the substrate by using an adhesive or the like.

According to the present invention, a multi-winding bobbin is used to sequentially form a coil from the center sub-branch to the outer sub-branch, or from the outer sub-branch to the center sub-branch. Manufacture of an antenna coil for a non-contact IC card by winding a wire to form a spiral coil having predetermined intervals inside and outside, and then removing the coil from the multiple winding frame and fixing the coil to a substrate at the same time Is the way.

In the above-mentioned multiple winding frame, a plurality of branch winding frames having different diameters are concentrically arranged, and a branch winding frame on the center side thereof is sequentially projected in the axial direction by one step from an outer branch winding frame. Each branch winding frame is advanced and retracted in the axial direction as necessary, so that the front end faces of all branch winding frames can be made to coincide with the same plane.

In the multiple winding frame, it is appropriate to form a cutout between the adjacent branch winding frames so that the coil wire can move to another adjacent branch winding frame.

As the coil wire, similar to that of the above-described embodiment of the present invention, a coil wire suitable for manufacturing a coil according to the purpose is used. And, as mentioned earlier,
By sequentially winding this from the center branch winding frame to the outer branch winding frame from the center side branch winding frame of the multiple winding frame, or from the outer branch winding frame to the center branch winding frame, a predetermined interval is formed inside and outside. A spiral coil is provided.

[0026] Even if such a winding of the coil wire around the multiple winding frame is performed by fixing the multiple winding frame and moving the coil wire around the multiple winding frame in a rotating state, the coil wire can be pulled out freely. However, it may be performed by rotating the multiple reel without moving the other.

Thereafter, as described above, each of the branch winding frames is moved forward and backward in the axial direction to remove the coil while the front end surfaces of all the branch winding frames are flush with each other. Fix the coil. Specifically, it is possible to make the front end surfaces of the multiple winding frames the same surface by making the outer branch winding frames advance as necessary, or by moving the central branch winding frame back as much as necessary. it can.

Thus, the coil is easily detached, and the coil is fixed to the substrate. As the substrate, the same members as those of one embodiment of the present invention described above are employed. Then, the coil is fixed on the substrate using, for example, an adhesive.

As described above, according to the present invention, it is possible to easily manufacture an antenna coil having a small line-to-line floating capacitance and a small variation in the resistance value and the capacitance with a simple device.

[0030]

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

<Embodiment 1> FIGS. 1 to 6 show an embodiment 1 to which the present invention is applied. FIG. 1 shows a whole state in which a coil wire is wound around a winding frame together with a linear spacer material. FIG. 2 is a schematic front enlarged view showing a state in which a coil wire is wound around a winding frame together with a linear spacer material, and FIG. 3 is a schematic view showing a state in which a coil wire and a linear spacer material are wound around a winding frame. FIG. 4 (a) is an enlarged front view showing a holding surface member, a winding frame attached to the center thereof, and another holding surface member arranged to be detachable from the holding surface member. The other holding surface member is separated from the winding frame. FIG. 4B is a schematic side view of the winding device in a state in which another holding surface member is joined to a winding frame attached to the center of the holding surface member, and FIG.
FIG. 5 is a schematic side view of a winding device showing only a cross-section of a coil wire and a linear spacer material wound in a state of being superimposed on a bobbin, and FIG. FIG. 4 is a plan view of the substrate showing a state where the coil is fixed.

In this embodiment, as shown in FIGS. 4 (a) and 4 (b), a winding frame 1 and a holding surface member 2a having the winding frame 1 fixed at the center are provided.
And a holding surface member 2b which is located facing the holding surface member 2a and which is disposed so as to be able to move forward and backward so as to abut the holding frame 1 together with the holding surface member 2a in a sandwiched state. use. As shown in FIG. 4 (b), this winding device is connected to an electric motor (not shown) so that the winding frame 1 can be rotated after holding the winding frame 1 between the two holding surface members 2a and 2b. It is.

As shown in FIG. 1, the winding frame 1 of the above-mentioned winding device has a notch 3 for locking formed therein, and the coil wire wound around the bobbins 4 and 5, respectively. w1
And each end of the linear spacer material s is locked. Here, when each is wound around the winding frame 1, the linear spacer material s is locked so that it is on the inner side. The bobbins 4 and 5 are rotatably disposed so that the wound coil wire w1 and the linear spacer material s can be freely pulled out.

The coil wire w1 used is suitable for the coil to be manufactured, and an adhesive application means 6 is arranged in the middle of the coil wire w1 being pulled out from the bobbin 4 to the bobbin 1, and the coil wire w1 passes through the coil wire w1. Pass through and apply the adhesive. A heat-fusible polymer adhesive is used as the adhesive, and a heating means is attached to the application means 6 so that the molten adhesive adheres to the peripheral side surface when the coil wire w1 passes therethrough. .

When a self-fusing wire to which a hot-melt adhesive is applied is used as the coil wire w1, the coating means 6 becomes unnecessary, and is replaced by a dashed line in FIG. As described above, the heating means 7 for radiating hot air is employed, and the hot wire is blown to the coil wire w1 drawn out by the heating means 7.

The linear spacer material s having a size suitable for the spiral coil c1 to be manufactured in consideration of the distance between the adjacent inner and outer portions thereof is adopted. In this example, a dielectric material of a suitable size was employed.

When the winding device is rotated as described above and the winding frame 1 is rotated as shown in FIG. 1, the bobbin 4, 5 rotates the coil wire w.
While unwinding 1 and the linear spacer material s, as shown in FIG. 2, they are wound around the winding frame 1 in an overlapping state. In the innermost part, the linear spacer material s is directly wound around the winding frame 1, and the coil wire w1 is wound around the outer side. Further, the linear spacer material s is wound around the outside thereof, and the coil wire w1 is wound around the outside thereof.

When the linear spacer material s and the coil wire w1 are wound around the bobbin 1 in a state of being superposed as described above, the linear spacer material s always intervenes between adjacent inner and outer portions of the coil wire w1. , The distance corresponding to the dimension is maintained.

When the winding device is rotated the required number of times and the winding frame 1 is rotated the same number of times, as shown in FIGS. 3 and 5, a spiral coil c1 having a required number of turns is completed. At this time, as described above, the adhesive applying means 6 is arranged in the middle from the bobbin 4 to the bobbin 1, and as described above, the coil wire w1 passes therethrough and the adhesive is applied. And wound around the winding frame 1 together with the linear spacer material s. Therefore, when wound around the winding frame 1, the adjacent coil wire w1 and the linear spacer material s
Is adhesively bonded in a state of being wound with each other, and the configuration of the formed spiral coil c1 is maintained.

Therefore, as described above, the coil c1
Is completed, the winding device is separated from the holding surface member 2a by the holding surface member 2b as shown in FIG. 4A, and the coil c1 is removed from the winding frame 1 disposed at the center of the latter. As shown in FIG. 6, the coil c1 is fixed at a predetermined position on the substrate 8. As described above, the state of the coil c1 is fixed by the adhesive, so that the coil c1 does not collapse.
It can be removed from the reel 1. The fixing to the substrate 8 is similarly performed using an adhesive. In this example, a nonwoven fabric sheet made of polyethylene terephthalate was used as the substrate 8.

As described above, according to this embodiment, by using the linear spacer material s, it is possible to easily and precisely secure a necessary interval between the inner and outer adjacent portions of the spiral coil c1. An excellent coil c1 having a small floating capacitance between lines and a small variation in resistance and the capacitance.
Can be easily manufactured.

<Embodiment 2> FIGS. 7 to 11 show an embodiment 2 to which the present invention is applied. FIG. 7 (a) is a front view of a multiple reel, and FIG. 7 (b) is a multiple reel. FIG. 8 is a side view of FIG.
FIG. 9 (a) is a front view showing a state in which a coil wire is wound on the branch winding frame of the multiple winding frame in order from the small diameter inside to the middle, and FIG. 9 (b) is a cross-sectional view of the multiple winding frame. FIG. 10A is a side view showing a state where the coil wire is wound around the branch winding frame in the order of the inner diameter from the small diameter to the middle, and FIG. FIG. 10 (b) is a side view showing a state in which the coil wire is wound around all the branch winding frames of the multiple winding frame, and then abutted against the substrate so that all the branch winding frames are flush with each other. FIG. 11 is a side view showing a state of being retracted, and FIG. 11 is a front view of a substrate on which a coil is fixed.

In this embodiment, as shown in FIGS. 7A, 7B and 8, four branch winding frames 11a, 11a having different diameters.
A multiple winding frame 11 is used in which b, 11c, and 11d are concentrically overlapped and fitted, and the outermost portion is externally supported by a support frame 11e.

This multiple winding frame 11 is set so that the leading end of the central branch winding frame 11a is most protruded, and the other branch winding frame 1
1b, 11c, and 11d are sequentially overlapped and fitted to the branch winding frame immediately inside thereof so as to be retracted one step at a time. The retreat height for one step is set to a size exceeding the diameter of the coil wire w2 to be used.

Each of the branch winding frames 11a, 11b, 11c,
11d, as shown in FIGS. 7 (a), (b) and FIG. 8, each comprises a winding frame portion and a flange base portion which protrudes radially below the winding frame portion. When the innermost branch winding frame is inserted into the outermost branch winding frame in that order up to the inner branching winding frame 11a, the upper surface of the flange base of the innermost branching winding frame is the outermost branching frame. In contact with the lower surface of the brim base portion of the branch winding frame, the former, that is, the front end of the winding frame portion of the nearest inner branch winding frame is the latter, that is, the front end of the winding frame portion of the nearest outer branch winding frame. The protruding portion is regulated so as to protrude from the tip by the one step. Note that the leading end of the winding frame portion of the outermost branch winding frame 11d protrudes upward by one step from the upper surface of the support frame 11e.

The multiple winding frame 11 is configured as described above, and each of the branch winding frames 11a to 11d and the support frame 1e are configured so as to be slidably detachable from each other. Therefore, if necessary, each of the branch winding frames 11a to 11d can be retracted until their respective ends coincide with the front surface of the support frame 11e.

As shown in FIGS. 7A, 7B, 9 and 10, the innermost branch winding frame 11a of the multiple winding frame 11 has a right side of the winding frame portion in FIG. A notch 12 is formed near the shoulder side portion, and the tip of the coil wire w2 is locked to the notch 12 so that the coil c2 can be wound therefrom. Notch portions 13b, 13c in the range from the upper right part to the lower part are provided on the bobbin portions of the other branch bobbin frames 11b to 11d.
13d is formed and the coil wire w to be wound
2 is adjacent to each branch winding frame 11a, 11b, 11c, 11
d can be shifted to each other through these notches 13b, 13c, 13d.

The coil c2 is manufactured using the multiple winding frames 11 described above. First, as shown in FIG. 9A, the tip of the coil wire w2 pulled out from a bobbin not shown is
Notch 12 of innermost branch winding frame 11a of multiple winding frame 11
To lock. Next, while pulling out the coil wire w2, the coil wire w2 is wound around the winding frame portion of the branch winding frame 11a, and as shown in FIGS. A transition is made to the branch winding frame 11b through the cutout portion 13b of the adjacent branch winding frame 11b at the side having the same, and the notch of the adjacent branch winding frame 11c is similarly wound at about 3/4 of the winding frame portion. The branch winding frame 11 through the portion 13c
Move to c. Thereafter, similarly, when the winding is wound about 3/4 on the winding frame portion of the branch winding frame 11c, the adjacent branch winding frame 11d
To the branch winding frame 11d through the notch 13d of
The winding operation is completed by winding around substantially the entire circumference of the winding frame portion.

Thereafter, in this state, the front surface of the multiple winding frame 11 is brought close to the substrate 18 on which the coil c2 is to be mounted as shown in FIG. 10A, and further, as shown in FIG. Is pressed against the substrate 18. In the pressing process, the multiple winding frame 11 is retracted until the leading ends of the branch winding frames 11a to 11d coincide with the front surface of the support frame 11e. A spiral coil c2 located in the inside of the substrate 1
8 is pressed.

As the substrate 18, a thermoplastic polyethylene terephthalate sheet was used.
Is heated at 150 ° C. by the heating plate 14 placed on the
After heating for about 10 seconds, the spiral coil c2 pressed against the upper surface as described above
It will be adhesively fixed on top. Thereafter, when the multiple winding frame 18 is lifted, as shown in FIG. 11, a substrate in which the antenna coil for the non-contact IC card in which the spiral coil c2 is fixed on the substrate 18 is completed. .

As described above, according to this embodiment, each of the branch winding frames 11a to 11d of the multiple winding frame 11 having a simple configuration.
Since the coil wire w is wound directly on the wire and then extruded, a coil c2 without deformation can be easily obtained with high accuracy, and the obtained coil c2 is therefore a stray capacitance between lines. And the dispersion of the resistance value and the capacitance is small.

[0052]

Therefore, according to the method of manufacturing an antenna coil for a non-contact IC card according to the first aspect of the present invention, using a simple device, the line-to-line floating capacitance is easily reduced, and the resistance value and the capacitance are reduced. Spiral Non-Contact IC with Small Variation
An antenna coil for a card can be manufactured.

According to the method of manufacturing an antenna coil for a non-contact IC card according to the second aspect of the present invention, since a dielectric spacer is used as a linear spacer material for separating adjacent inner and outer portions of the spiral coil, it is easy to use. Low stray capacitance between lines,
In addition, it is possible to manufacture an antenna coil having a small variation between the resistance value and the capacitance.

According to the method of manufacturing an antenna coil for a non-contact IC card according to the third aspect of the present invention, since a wire similar to the coil wire is employed as the linear spacer material, it is extremely easy to separate the inside and outside of the coil. In addition, an antenna coil having a small line-to-line floating capacitance and a small variation in resistance value and the capacitance can be easily manufactured.

According to the method of manufacturing an antenna coil for a non-contact IC card according to the fourth aspect of the present invention, as in the first aspect of the present invention, the line-to-line floating capacitance is extremely easily reduced using a simple instrument, and A spiral non-contact IC card antenna coil having a small variation in the resistance value and the capacitance can be manufactured.

According to the method of manufacturing an antenna coil for a non-contact IC card according to the fifth aspect of the present invention, the other branch of which the coil wire is adjacent between the adjacent branch winding frames of the multiple winding frame used in the fourth aspect of the present invention. Since the notch for transition to the winding frame is formed, the transition between them can be performed smoothly.

[Brief description of the drawings]

FIG. 1 is an overall schematic front view of a first embodiment showing a state in which a coil wire is wound around a winding frame together with a linear spacer material.

FIG. 2 is an enlarged schematic front view showing a state where a coil wire is wound around a winding frame together with a linear spacer material.

FIG. 3 is a schematic front enlarged view showing a state where a coil wire and a linear spacer material are wound around a winding frame;

FIG. 4 (a) is composed of a holding surface member, a bobbin mounted at the center thereof, and another holding surface member which is disposed so as to be able to be freely attached to and detached from it.
FIG. 9 is a schematic side view of the winding device in a state where another holding surface member is separated from the winding frame. (b) is a schematic side view of the winding device in a state where another holding surface member is joined to a winding frame attached to the center of the holding surface member.

FIG. 5 is a schematic side view of a winding device showing only a cross section of a coil wire and a linear spacer material wound in a state of being superimposed on a winding frame;

FIG. 6 is a plan view of a substrate showing a state in which a coil having a necessary interval secured by a linear spacer material is fixed.

FIG. 7A is a front view of a multiple reel used in the second embodiment. (b)
9 is a side view of the multiple winding frame used in the second embodiment.

FIG. 8 is a sectional view taken along line AA of FIG. 7 (a).

FIG. 9 (a) is a front view showing a state in which a coil wire is wound around a branch winding frame of a multiple winding frame in order from the smaller diameter on the inside to the middle. (b) is a side view showing a state where a coil wire is wound around the branch winding frame of the multiple winding frame in the order of the inner small diameter and halfway.

FIG. 10 (a) is a side view showing a state in which a coil wire is wound around all branch winding frames of a multiple winding frame and then brought close to a substrate.
(b) is a side view showing a state in which a coil wire is wound around all the branch winding frames of the multiple winding frame and then abuts on the substrate, and all the branch winding frames are retracted to be flush with each other.

FIG. 11 is a front view of a substrate to which a coil is fixed.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 winding frame 2a holding surface member 2b holding surface member 3 notch portion for locking 4 bobbin of coil wire 5 bobbin of linear spacer material 6 coating means 7 heating means 8, 18 substrate 11 multiple winding frames 11a, 11b, 11c, 11d Branch winding frame 11e Support frame 12 Notch 13b, 13c, 13d Notch 14 Heating plate c1, c2 Coil s Linear spacer material w1, w2 Coil wire

Continuation of the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) H01P 11/00 H01Q 1/40 H01Q 1/36 7/00 1/40 G06K 19/00 H 7/00 K F term ( Reference) 2C005 MA19 NA09 RA30 5B035 AA03 AA07 BA05 CA02 CA08 CA23 5E002 AA01 AA14 5E070 DB02 EA05 5J046 AA09 AB11 PA07 QA02

Claims (5)

[Claims] 1. A spiral coil is formed by superimposing one or more linear spacer members on a coil wire and spirally winding the coil member in a required number of turns on a winding frame member having a required diameter in this state. A method for manufacturing an antenna coil for a non-contact IC card by fixing the coil to a substrate. 2. The method of manufacturing an antenna coil for a non-contact IC card according to claim 1, wherein a wire made of a dielectric material is used as said linear spacer material. 3. The method for manufacturing an antenna coil for a non-contact IC card according to claim 1, wherein a wire similar to the coil wire is employed as the linear spacer material. 4. A plurality of branch winding frames having different diameters are concentrically formed.
And a multiple winding frame in which the branch winding frame on the center side is sequentially superposed one by one from the outer branch winding frame in the axial direction one by one. Use a multiple reel that can be advanced and retracted in the axial direction and make the front end faces of all the branch reels the same plane, from the central branch reel to the outer branch reel, or to the outer branch. A coil wire is sequentially wound from the shunt frame to the center shunt winding frame to form a spiral coil having a predetermined interval inside and outside, and thereafter, the respective shunt winding frames are pivoted as necessary. A method of manufacturing an antenna coil for a non-contact IC card by removing the coil while fixing the coil to the substrate while moving the front and rear surfaces in the same direction so that the front end faces of all the winding frames are the same. 5. The non-contact IC card antenna according to claim 4, wherein a cut-out portion is formed between adjacent branch winding frames of said multiple winding frame so that a coil wire can be transferred to another adjacent branch winding frame. Manufacturing method of coil.