JPH09233797A - Coiled part and method for manufacturing it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve production yield for cost reduction and also to improve quality and performance by adopting the structure of superposed coil layer formed parts, which are formed by arranging spiral flat coils planarity in a ring shape, with insulating layers between them. SOLUTION: Bottom and upper coil layer formed parts 11, 13, each made up of spiral flat coils 10, 12 arranged planarity in a ring shape, are superposed, with insulating layer 15 between them. When these parts are provided with a coil body part 16 comprising spiral flat coils 10 and spiral flat coils 12, those of which corresponding to each other are electrically connected and a pair of bottom and upper insulating covering members 17, 18 arranged oppositely sandwiching the coil body part 16 and press bonded to the coil body part 16 by pressing, the spiral flat coils 10, 12 in each of the bottom and upper coil layer formed parts 11, 13 are stamped in a plate of a conductive material so that they can be formed by pressing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a plurality of coil layers, each having a flat surface portion in which a predetermined number of spiral flat coils are annularly arranged, and superposed with an insulating layer interposed therebetween. The present invention relates to a coil component having a structure and a manufacturing method thereof.

[0002]

2. Description of the Related Art In electronic devices such as portable tape recorders and portable video cameras, which are required to be compact and lightweight, it is called a flat brushless motor for driving various rotary parts incorporated therein. A small motor is used.
A flat brushless motor is, for example, as shown in Japanese Patent Laid-Open No. 62-250854, whose size in the rotation axis direction is remarkably small, and usually a plurality of spiral flat coils are arranged in an annular shape. It is provided with a coil component including a coil layer for generating a magnetic field having a flat portion.

A coil component used in such a flat brushless motor is for generating a magnetic field, in which a coil main body portion of the coil component has a flat portion in which a plurality of spiral flat coils are arranged in an annular shape. Not only is it provided with only one coil layer, but for example, a plurality of coil layers for magnetic field generation each having a flat portion in which a plurality of spiral flat coils are annularly arranged and arranged, It is assumed that they are formed by being superposed with an insulating layer interposed, and in such a case, among the plurality of spiral flat coils in each of the plurality of coil layers for generating a magnetic field, mutually corresponding ones are electrically connected. Are linked together. The number of magnetic field generating coil layers that are superposed with an insulating layer interposed therebetween is arbitrarily selected as necessary, and is, for example, two layers.

The coil layer for generating each magnetic field has, for example, a plurality of spiral flat coils formed by winding an enameled wire by a winding machine on a disk-shaped substrate and arranged in an annular shape. A printed wiring board, which is mounted and fixed on a substrate, and a conductive layer of a printed wiring board in which a conductive layer is fixed to an insulating substrate is subjected to an etching treatment. A plurality of spiral flat coils are formed on the substrate in an annular array, and a plurality of spiral flat coils are formed on the substrate in an annular array by plating. It is considered as something.

[0005]

However, a plurality of spiral flat coils arranged annularly in the coil layer for generating a magnetic field are formed by winding an enameled wire by a winding machine, and these are arranged side by side. If it is obtained as a result of the above, many work steps are required for its completion, which causes a problem in terms of price, and also "variation" in dimensions or characteristics between a plurality of spiral flat coils, and in arrangement. There is a possibility that quality may be deteriorated due to an error or the like. Further, when a plurality of spiral flat coils arranged annularly in the coil layer for generating a magnetic field are formed on a printed wiring board by applying an etching process, a conductor layer pattern forming each spiral flat coil. But,
It tends to have a relatively high resistance value, and therefore
There is a possibility that sufficient performance may not be obtained. further,
When a plurality of annular flat coils arranged in the coil layer for generating a magnetic field are formed on a substrate by plating, a relatively long time is required in the processing step, which leads to a production yield and There may be a price problem.

In view of the above point, according to the present invention, a plurality of coil layer forming portions for generating a magnetic field, each of which has a predetermined number of spiral flat coils arranged in an annular shape in a plane, are superposed with an insulating layer interposed. With the coil main body configured as described above, the number of work steps required for manufacturing the coil main body is relatively small, and the time required for each step is relatively short, which results in the production yield. The present invention provides a coil component and a method for manufacturing the same that are improved in cost and are advantageous in terms of price, and that quality and performance can be improved.

[0007]

In the coil component according to the present invention, a plurality of coil layer forming portions each having a predetermined number of spiral flat coils annularly arranged in a plane are superposed with an insulating layer interposed. , A coil main body formed by electrically connecting mutually corresponding ones of a predetermined number of spiral flat coils in each of the plurality of coil layer forming parts, and a coil main body part sandwiched between the coil main body part and the coil main body part. A pair of insulating cover members that are respectively crimped to the outermost pair of coil layer forming portions in the coil body portion by processing, and the predetermined number of spiral flat coils in each of the plurality of coil layer forming portions are made of a conductive material. The plate-shaped body is subjected to punching press working, and is formed.

Further, in the method for manufacturing a coil component according to the present invention, a plate-shaped body made of a conductive material is subjected to punching press working to form a coil-forming portion including a predetermined number of spiral flat coils arranged in an annular shape. Formed on the body, the plurality of coil forming portions are superposed with an insulating layer interposed, and each of the predetermined number of spiral flat coils in each of the plurality of coil forming portions is made independent to be superposed with the insulating layer interposed. The plurality of coil layer forming portions are formed, and the corresponding ones of the predetermined number of spiral flat coils in each of the plurality of coil layer forming portions are electrically connected to each other to form the coil body portion. , And a pair of insulating cover members,
A coil component is obtained by performing a pressing process while sandwiching and facing the coil main body portion and crimping the coil main body portion to the coil layer forming portions forming the outermost pair in the coil main body portion, respectively.

In the coil component according to the present invention configured as described above, a predetermined number of spiral flat coils arranged annularly in each of the plurality of coil layer forming portions are formed into a plate-like body made of a conductive material. It is formed by punching and pressing. Thereby, each of the plurality of coil layer forming portions forming the coil main body portion by being superposed with the insulating layer interposed therebetween can easily and easily
Moreover, the coil component having the coil main body including the plurality of coil layer forming portions can be obtained with extremely high precision, so that the number of work steps required for manufacturing the coil component is relatively small and The time required for manufacturing is relatively short, and therefore the production yield is improved, which is advantageous in terms of price, and the quality and performance are improved.

Further, according to the method of manufacturing a coil component of the present invention, the plate-shaped body made of a conductive material is subjected to punching press working, thereby forming a coil including a predetermined number of spiral flat coils arranged annularly. Part is formed into a plate-like body,
A plurality of formed coil forming portions are superposed with an insulating layer interposed, and each of the predetermined number of spiral flat coils in each of the plurality of coil forming portions is made independent and superposed with an insulating layer interposed. A plurality of coil layer forming portions are formed, and corresponding ones of a predetermined number of spiral flat coils in each of the plurality of coil layer forming portions are electrically connected to each other to form a coil body portion. To be done. As a result, in the coil component obtained by the method for manufacturing a coil component according to the present invention, each of the coil components includes a plurality of coil layer forming portions that can be easily and extremely accurately obtained within an extremely short time. With the coil body formed, as a result, the number of working steps required for its manufacture is relatively small and the time required for each step is relatively short, thus improving the production yield. Therefore, it is advantageous in terms of price, and quality and performance are improved.

[0011]

1 and 2 show an example of a coil component according to the present invention. This example shows a flat brushless motor provided in an electronic device such as a portable tape recorder or a portable video camera. It is supposed to be used for.

In the example shown in FIGS. 1 and 2, a lower coil layer forming portion 11 in which a plurality (for example, 9) of spiral flat coils 10 are annularly arranged in a plane and a lower coil layer forming portion 11 are formed. An insulating layer 15 is interposed between the upper flat coil layer forming portion 13 and the upper flat coil layer forming portion 13 formed by planarly annularly arranging the same number (for example, 9) of flat spiral coils 10 in the coil layer forming portion 11. The coil main body 16 formed by being overlapped with each other is provided. The plurality of spiral flat coils 10 in the lower coil layer forming portion 11 and the plurality of flat spiral coils 12 in the upper coil layer forming portion 13 are spiral coils arranged at positions corresponding to each other. Flat coil 10 and spiral flat coil 12
And correspond to each other. Further, a lower insulating cover member 17 and an upper insulating cover member 18 are attached to the outer side (lower side) of the lower coil layer forming section 11 and the outer side (upper side) of the upper coil layer forming section 13, respectively.

A coupling portion 10A is provided in the center of each of the plurality of spiral flat coils 10 forming the lower coil layer forming portion 11, and a plurality of connecting portions forming the upper coil layer forming portion 13 are formed. A coupling portion 12A is also provided in the central portion of each of the spiral flat coils 12, and the spiral flat coil 10 and the coupling portion 10A and the coupling provided on the spiral flat coil 12 that correspond to each other are coupled to each other. The parts 12A are arranged at positions corresponding to each other. The coupling portion 10A provided on the spiral flat coil 10 and the coupling portion 12A provided on the spiral flat coil 12 are
The projection 10B protruding upward from the coupling portion 10A and the through hole 12B provided in the coupling portion 12A fitted to the projection 10B are provided, and they are electrically coupled by caulking.

The insulating layer 15 is formed, for example, by an insulating sheet which is obtained by subjecting a plate-shaped body made of an insulating material to punching and pressing, and which forms an annular body as a whole. A central hole 15A is provided at a position inside each of the lower coil layer forming portion 11 and the upper coil layer forming portion 13, and the spiral flat coil 10 and the spiral flat coil corresponding to each other form a pair. Coupling portion 10A and coupling portion 12A respectively provided on the coil 12
Through holes 15B are provided at positions corresponding to both. The caulking connection between the coupling portion 10A provided at the central portion of the spiral flat coil 10 and the coupling portion 12A provided at the central portion of the spiral flat coil 12 is performed by caulking the transparent sheet provided on the insulating sheet forming the insulating layer 15. It is done through the hole 15B.

Further, the outer diameter of the insulating sheet forming the insulating layer 15 as a whole is larger than that of the lower coil layer forming portion 11 and the upper coil layer forming portion 13. There is. Then, a part of the insulating sheet forming the insulating layer 15 is provided with a connecting portion 15C protruding outward.

A plurality of spiral flat coils 10 which are annularly arranged in a plane and which form the lower coil layer forming portion 11 are formed by punching and pressing a plate-like body made of a conductive material, for example, a rolled copper plate. It is assumed that they are collectively formed by, and then they are formed independently of each other.
The plurality of spiral flat coils 12 that form the upper coil layer forming portion 13 and are arranged in a plane in a ring shape are also collectively formed by punching and pressing a plate-shaped body made of a conductive material, for example, a rolled copper plate. It is assumed that they are formed, and then they are individually formed. Each of the plurality of spiral flat coils 10 and each of the spiral flat coils 12 are formed to have substantially the same dimensions.

In this way, the lower coil layer forming portion 11 formed by planarly annularly arranging the plurality of spiral flat coils 10 and the upper coil formed by planarly annularly arranging the plurality of spiral flat coils 12 are arranged. The layer forming portion 13 is overlapped with the insulating layer 15 formed of an insulating sheet that forms a ring-shaped body as a whole, and the plurality of spiral flat coils 10 and the upper coil layer forming portion in the lower coil layer forming portion 11 are stacked. Corresponding ones of the plurality of spiral flat coils 12 in 13 are electrically connected to each other by caulking and coupling the central portions of each, and the coil main body 16
Is configured.

A lower insulating cover member 17 attached to the outer side (lower side) of the lower coil layer forming section 11 in the coil body section 16 and an outer side (upper side) of the upper coil layer forming section 13 in the coil body section 16. The upper insulating cover member 18 mounted on the disk-shaped member made of a pair of insulating materials is disposed so as to face each other with the disk-shaped member made of a pair of insulating materials sandwiching the coil body portion 16 from the outside. It is formed by performing a pressing process. The disc-shaped member before the press treatment is obtained, for example, by subjecting a plate-shaped body made of an insulating material to punching and pressing.

The inner surface side of the lower insulating cover member 17 and the inner surface side of the upper insulating cover member 18 respectively have a plurality of spiral flat coils 1 forming the lower coil layer forming portion 11.
0 and the plurality of spiral flat coils 12 forming the upper coil layer forming portion 13 are pressed and engaged by press processing. Further, the lower insulating cover member 17 and the upper insulating cover member 18 are provided with central holes 17A and 18A, respectively, at positions corresponding to the central hole 15A provided in the insulating sheet forming the insulating layer 15.

As described above, one example of the coil component according to the present invention is a plurality of spiral flat coils 10 formed by punching and pressing a plate made of a conductive material such as a rolled copper plate. The lower coil layer forming portion 11 which is annularly arranged in a plane and the plurality of spiral flat coils 12 formed by punching and pressing a plate made of a conductive material such as a rolled copper plate are planar. The upper coil layer forming portion 13 which is annularly arranged on the coil main body portion 16 which is formed by superposing the insulating layer 15 formed of an insulating sheet on the lower insulating cover member 17
And the upper insulating cover member 18 is attached by sandwiching the coil body 16, and the central holes 15A, 17A and 18A are provided in the insulating layer 15, the lower insulating cover member 17 and the upper insulating cover member 18, respectively. It has a central hole 20 formed.

A plurality of spiral flat coils 10 forming the lower coil layer forming portion 11 and the upper coil layer forming portion 1 are formed.
The plurality of spiral flat coils 12 forming part 3 are interconnected in a predetermined manner, and their terminals are connected to the insulating layer 15 formed by an insulating sheet, although not shown. Derived on 15C.

An example of the coil component according to the present invention shown in FIGS. 1 and 2 is obtained as follows according to an example of the manufacturing method of the coil component according to the present invention.

In an example of the method for manufacturing a coil component according to the present invention, as shown in FIG. 3, the lower coil forming portion 11 ', which forms the lower coil layer forming portion 11,
Upper coil forming part 13 ′ that will form the upper coil layer forming part 13, insulating layer 15 formed by an insulating sheet obtained by subjecting a plate-shaped body made of an insulating material to punching and pressing, a plate made of an insulating material A disk-shaped member 17 ′ that will form the lower insulating cover member 17 obtained by subjecting a plate-shaped body to a punching press process, and a plate-shaped member made of an insulating material obtained by a punching press process A disk-shaped member 18 ′ that will form the upper insulating cover member 18
Prepare

The lower coil forming portion 11 'has a plurality of spiral-shaped members formed in a planar annular arrangement by subjecting a plate-like body made of a conductive material, for example, a rolled copper plate, to punching press processing. The flat coil 10 and the plurality of spiral flat coils 10 are integrally formed as a unit including a plurality of spiral flat coils 10 each connected by a small bridge portion, and an annular outer edge portion 25 that supports the plurality of flat spiral coils 10 annularly arranged thereby. To do. Similarly, the upper coil forming portion 1
Also for 3 ', a plurality of spiral flat coils 12 formed in a state of being annularly arranged in a plane by subjecting a plate-shaped body made of a conductive material, for example, a rolled copper plate to a punching press working, and a plurality of spiral coils. Each of the flattened flat coils 12 is integrally formed as a unit including a small bridge portion and an annular outer edge portion 26 that supports a plurality of flattened spiral flat coils 10 thereby.

Each of the lower coil forming portion 11 ', the upper coil forming portion 13', the insulating layer 15, the disc-shaped member 17 'and the disc-shaped member 18' is formed by a conveying means (not shown). , And is appropriately conveyed to the coil component assembly line 30. In the coil component assembly line 30, first,
At the assembly position “A”, the insulating layer 15 is overlaid on the lower coil forming portion 11 ′. At that time, the central hole 15A provided in the insulating layer 15 is located inside the plurality of annular flat coils 10 arranged in the lower coil forming portion 11 ′, and the through hole provided in the insulating layer 15 is provided. Each of 15B is arranged at a position corresponding to the coupling portion 10A provided in the central portion of each of the plurality of spiral flat coils 10 annularly arranged in the lower coil forming portion 11 '.

Then, obtained at the assembly position "A",
The insulating layer 15 stacked on the lower coil forming portion 11 ′ is conveyed to the assembly position “B”, and the insulating layer 15 stacked on the lower coil forming portion 11 ′ at the assembly position “B”.
Then, the upper coil forming portion 13 'is further stacked. At that time, the central hole 15A in the insulating layer 15 overlapped with the lower coil forming portion 11 'is located inside the plurality of spirally-shaped flat coils 12 arranged annularly in the upper coil forming portion 13', and the insulating layer Through hole 15B provided in 15
Is arranged at a position corresponding to the coupling portion 12A provided at the central portion of each of the spiral flat coils 12 annularly arranged in the upper coil forming portion 13 '.

At this time, as shown in FIG. 4, a coupling portion 10A provided in the central portion of each of the plurality of spiral flat coils 10 annularly arranged in the lower coil forming portion 11 '.
The protrusion 10B protruding upward from the insulating layer 15
Through the through hole 15B provided in the upper coil forming portion 1
A plurality of spiral flat coils 1 annularly arranged at 3 '
Two of the through holes 12B formed in the coupling portion 12A provided in the central portion of each of the two are inserted.

Then, at the assembly position "B", the lower coil forming portion 1 is superposed with the insulating layer 15 interposed therebetween.
1'and the upper coil forming part 13 'are pressed from above, and provided in the central part of each of the plurality of spiral flat coils 10 annularly arranged in the lower coil forming part 11'. The connecting portion 10A and the corresponding portion,
The coupling portion 12A provided in the central portion of each of the plurality of spiral flat coils 12 annularly arranged in the upper coil forming portion 13 ′ is caulked and coupled through the through hole 15B provided in the insulating layer 15. By such caulking connection, as shown in FIG.
As shown in FIG. 5, a coupling portion 10A provided in the center of each of the spiral flat coils 10 annularly arranged in the lower coil forming portion 11 ′ and an annular arrangement in the corresponding upper coil forming portion 13 ′. 12A of connecting parts provided in the center of each of the plurality of spiral flat coils 12
Are pressed downward to form recesses, and projections 10B projecting upward from the coupling portions 10A provided at the central portions of the plurality of spiral flat coils 10 are crushed from above. .

By such caulking connection, the connecting portions 10A provided in each of the plurality of spiral flat coils 10 and the corresponding connecting portions 12A provided in the spiral flat coil 12 are electrically connected. . That is, among the plurality of spiral flat coils 10 in the lower coil forming portion 11 ′ and the plurality of spiral flat coils 12 in the upper coil forming portion 13 ′, which correspond to each other, their respective central portions are caulked and coupled. By doing so, they are electrically connected.

Further, in the assembled position "B", the plurality of spiral flat coils 1 in the lower coil forming portion 11 'are provided.
The bridge portion that connects each of the 0 and the annular outer edge portion 25 is cut to separate each of the plurality of spiral flat coils 10 from the lower coil forming portion 11 ′ so as to be independent, and the upper coil forming portion 13 ′. Spiral flat coils 1 in
By cutting the bridge portion connecting each of the two and the annular outer edge portion 26, each of the plurality of spiral flat coils 12 is separated from the upper coil forming portion 13 'to be independent, and as shown in FIG. A lower coil layer forming portion 11 is formed by planarly annularly arranging a plurality of spiral flat coils 10, and an upper coil layer forming portion is formed by a plurality of spiral flat coils 12 being planarly annularly arranged. 13 is formed. Thereby, a lower coil layer forming portion 11 formed by planarly annularly arranging the plurality of spiral flat coils 10 and an upper coil layer forming portion 13 formed by planarly annularly arranging the plurality of spiral flat coils 12 are formed. However, the plurality of spiral flat coils 10 in the lower coil layer forming portion 11 and the plurality of spirals in the upper coil layer forming portion 13 are stacked with the insulating layer 15 formed of an insulating sheet forming an annular body as a whole interposed therebetween. A coil main body 16 is obtained in which mutually corresponding ones of the flat coils 12 are electrically connected to each other by caulking and coupling the respective central portions.

Subsequently, the coil body 16 obtained at the assembling position "B" is conveyed to the assembling position "C", and at the assembling position "C", the disc-shaped member 17 'and the disc-shaped member 1 are provided.
8'and the lower coil layer forming portion 11 and the upper coil layer forming portion 13 forming the coil body portion 16, respectively,
The coil body portion 16 is sandwiched and arranged to face each other. Then, the disk-shaped member 17 ′ and the disk-shaped member 18 ′ sandwiching the coil body 16 are subjected to a pressing process from the outside thereof, so that the disk-shaped member 17 ′ and the disk-shaped member 18 ′. Are the lower insulating cover member 17 and the upper insulating cover member 18 attached to the lower coil layer forming portion 11 and the upper coil layer forming portion 13 forming the coil body portion 16, respectively. As a result, as shown in FIG. 6, the lower insulating cover member 17 and the upper insulating cover member 18 are attached to the coil body 16 with the coil body 16 sandwiched therebetween.
5, lower insulating cover member 17 and upper insulating cover member 1
The coil component 28, which is an example of the coil component according to the present invention, having the central holes 20 formed by the central holes 15A, 17A, and 18A respectively provided in 8 is obtained.

In this way, the coil component 28 obtained at the assembly position "C" is installed, for example, following the coil component assembly line from the assembly position "C", and the flat brushless motor is assembled. It is transported to the motor assembly processing line.

In the above example, the coil body 16 is assumed to have the two coil layer forming portions which are the lower coil layer forming portion 17 and the upper coil layer forming portion 13. In the coil component according to the present invention, the coil main body may have three or more coil layer forming portions. In that case, a predetermined number of spiral flat coils each formed by punching and pressing a plate-shaped body made of a conductive material are arranged in a plane in an annular shape, and three or more layers are formed. The coil layer forming portions are overlapped with each other with an insulating layer interposed, and the corresponding ones of the predetermined number of spiral flat coils in each of the three or more coil layer forming portions are electrically connected to each other, A coil body is formed. Then, the lower insulating cover member and the upper insulating cover member, which are arranged opposite to each other with the coil sandwiched therebetween, are attached to such a coil main body by a press process, and the coil component according to the present invention is obtained. Therefore, in the coil component according to the present invention, the lower insulating cover member and the upper insulating cover member, which are arranged with the coil main body sandwiched, are formed by forming a coil layer forming an outermost pair in the coil main body. Department,
For example, the lowermost coil layer forming portion and the uppermost coil layer forming portion are respectively crimped.

Further, although the above-mentioned example is the coil component used for the flat brushless motor, the coil component according to the present invention is, for example, a drive device for focus servo control and a tracking servo control in an optical disc player. It can be used to form a means for generating a magnetic field in various devices such as a driving device for a vehicle.

[0035]

As is apparent from the above description, in the coil component according to the present invention, a predetermined number of spiral flat coils arranged annularly in each of the plurality of coil layer forming portions are made of a plate made of a conductive material. Each of the plurality of coil layer forming portions forming the coil main body portion by forming the coil body by punching and pressing the insulating body is formed in an extremely short time. It can be obtained easily and very accurately. As a result, the coil component according to the present invention has a relatively small number of work steps required for its manufacture, and a relatively short time required for each step, thus improving the production yield. Therefore, it will be advantageous in terms of price, and quality and performance will be improved.

Further, according to the method for manufacturing a coil component of the present invention, the plate-shaped body made of a conductive material is subjected to punching press work, thereby forming a coil including a predetermined number of spiral flat coils arranged in an annular shape. Part is formed into a plate-like body,
The plurality of formed coil forming portions are overlapped with an insulating layer interposed, and each of the predetermined number of spiral flat coils in each of the plurality of coil forming portions is made independent and overlapped with the insulating layer interposed. A plurality of coil layer forming portions are formed, and corresponding ones of a predetermined number of spiral flat coils in each of the plurality of coil layer forming portions are electrically connected to each other to form a coil body portion. Therefore, the coil component obtained by such a manufacturing method is
Each of them is provided with a coil body portion formed by including a plurality of coil layer forming portions which can be obtained easily and very accurately in an extremely short time. As a result, it is necessary for manufacturing the coil body. The number of work processes is relatively small and the time required for each process is relatively short,
Therefore, the production yield is improved, which is advantageous in terms of price, and the quality and performance are improved.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view showing an example of a coil component according to the present invention.

FIG. 2 is a schematic plan view showing a portion of an example of a coil component according to the present invention.

FIG. 3 is a conceptual diagram provided for explaining a process according to an example of a method for manufacturing a coil component according to the present invention.

FIG. 4 is a partial cross-sectional view provided for explaining an example of the method for manufacturing the coil component according to the present invention.

FIG. 5 is a partial cross-sectional view provided for explaining an example of the method for manufacturing the coil component according to the present invention.

FIG. 6 is a partial cross-sectional view provided for explaining an example of the method for manufacturing the coil component according to the present invention.

[Explanation of symbols]

10, 12 Spiral flat coil 10A, 12A
Coupling part 10B Protrusions 12B, 15B Through hole 11 Lower coil layer forming part 11 ′ Lower coil forming part 13 Upper coil layer forming part 13 ′
Upper coil forming part 15 Insulating layers 15A, 17A, 18A, 20 Central hole 15C Connecting part 16 Coil body part
17 Lower Insulation Cover Member 17 ', 18' Disc-shaped Member 18 Upper Insulation Cover Member 25, 2
6 Annular outer edge portion 28 Coil component 30 Coil component assembly line

Claims (6)

[Claims] 1. A plurality of coil layer forming portions, each of which has a predetermined number of spiral flat coils arranged in an annular shape in a plane, are stacked with an insulating layer interposed therebetween, and a predetermined number in each of the plurality of coil layer forming portions. A plurality of spiral flat coils corresponding to each other are electrically connected to each other, and the coil main body is sandwiched between the coil main body and the coil main body. A pair of insulating cover members that are respectively crimped to the coil layer forming portions forming a pair, and a predetermined number of spiral flat coils in each of the plurality of coil layer forming portions are punched and pressed into a plate-like body made of a conductive material. A coil component, wherein the coil component is formed by applying. 2. A plurality of spiral flat coils corresponding to each other among a predetermined number of spiral flat coils in each of the plurality of coil layer forming portions are caulked to each other in a central portion of each spiral shape. The coil component according to claim 1, wherein the coil component is a coil component. 3. A position at which an insulating layer interposed between a plurality of coil layer forming portions corresponds to a central portion of each spiral shape of a predetermined number of spiral flat coils in each of the plurality of coil layer forming portions. The coil component according to claim 2, wherein the coil component is formed of an insulating sheet provided with a through hole in the. 4. A plate forming member including a predetermined number of spiral flat coils arranged annularly is formed on the plate member by punching and pressing the plate member made of a conductive material, and a plurality of the coil members are formed. Parts with an insulating layer in between,
By independently providing each of the predetermined number of spiral flat coils in each of the plurality of coil forming portions, a plurality of coil layer forming portions that are superposed with the insulating layer interposed are obtained, and the plurality of coil layers are also provided. Corresponding ones of the predetermined number of spiral flat coils in each of the forming portions are electrically connected to each other to form a coil main body, and a pair of insulating cover members are opposed to each other with the coil main body sandwiched therebetween. A method of manufacturing a coil component, wherein a coil component is obtained by performing a pressing process under the above conditions, and crimping each of the coil layer forming units forming an outermost pair in the coil main body. 5. A plurality of spiral flat coils corresponding to each other among a predetermined number of spiral flat coils in each of the plurality of coil layer forming portions are caulked to each other at a central portion of each spiral shape. The method for manufacturing a coil component according to claim 4. 6. A position where an insulating layer interposed between a plurality of coil layer forming portions corresponds to a central portion of each spiral shape of a predetermined number of spiral flat coils in each of the plurality of coil layer forming portions. 6. The method for manufacturing a coil component according to claim 5, wherein the coil sheet is formed of an insulating sheet having a through hole.