JP3074316B2 - Sheet coil lamination or loading products - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated or mounted sheet coil as an electronic component which can be used, for example, in a transformer, a noise filter, an oscillator and the like.

[0002]

2. Description of the Related Art Conventionally, a coil as an electronic component is manufactured by winding a fine conductor wire by a machine. This is a problem that is not suitable for the production of products of various types in small lots. In addition, when winding the coil, the insulation film is likely to be damaged, broken, etc.
There are also problems with reliability and yield. Further, there is a problem that the height per unit number of coil turns becomes large.

[0003]

The problem to be solved is the aforementioned problem in the prior art.

[0004]

In order to solve the above-mentioned problems, according to the present invention, there is provided a sheet coil laminated or mounted article in which a conductor is provided on the front and back surfaces of a sheet-like insulator in plan view from the same side of the insulator. A plurality of sheet coils formed in a planar coil shape having the same winding direction are stacked or stacked, and
Alternatively, a smaller number of stacked sheet coils
A series two-terminal circuit is configured , and each of the plurality of sheet coils is individually connected to a coil inner end of a coiled conductor on the front and back surfaces thereof, and is stacked or stacked.
Made up of multiple sheet coils
In each of the series two-terminal circuits , a predetermined sheet coil has a coil outer end on one side connected to a through hole as a terminal provided on the sheet coil, and a coil outer end on the other side connected to the other side. The remaining sheet coil connected to the provided pad has the coil outer end on one surface connected to the pad provided on the surface, and the coil outer end on the other surface connected to the pad provided on the other surface. . Alternatively, the sheet coil laminated or loaded article of the present invention may be configured such that a conductor is formed on a back surface of a sheet-shaped insulator in a planar coil shape in which a conductor forms the same winding direction in plan view from the same side of the insulator. A number of formed sheet coils are stacked or stacked
The plurality of stacked or stacked sheet coils.
Thus, two or more series two-terminal circuits are configured , and each of the plurality of sheet coils is individually connected to the inner end of the coil of the coiled conductor on the back surface thereof, and is stacked or laminated.
In each of the two or more series two-terminal circuits constituted by a plurality of stacked sheet coils , a predetermined sheet coil has a coil outer end on one surface and a through hole as a terminal provided in the sheet coil. Connected to
The outer end of the coil on the other surface is connected to the pad provided on the other surface, and the remaining sheet coil has the outer end of the coil on one surface connected to the pad provided on the surface, and the outer end of the coil on the other surface is connected. , Are connected to pads provided on the other surface. Alternatively, the sheet coil laminated or loaded article of the present invention may have a planar coil shape in which conductors form the same winding direction on the front and back surfaces of the sheet-shaped insulator in plan view from the same side of the insulator. A plurality of formed sheet coils are laminated or
Is SekiSo, a plurality of Shitokoi laminated certain stomach which is SekiSo
Form at least one series two-terminal circuit.
The at least one series two-terminal circuit is configured by connecting conductors of at least two adjacent sheet coils between the sheet coils, and the connection between the sheet coils is performed by the adjacent sheet coil. It is obtained by pads provided on mutually facing surfaces of the coil and located at the same position in plan view from the same side surface of the insulator. Alternatively, the sheet coil laminated or loaded article of the present invention may be configured such that a conductor is formed on a back surface of a sheet-shaped insulator in a planar coil shape in which a conductor forms the same winding direction in plan view from the same side of the insulator. Plural of formed sheet coils are laminated
Alternatively, a plurality of stacked or stacked sheets are stacked.
Two or more series two-terminal circuits
The two or more series two-terminal circuits are configured by connecting conductors of at least two adjacent sheet coils between the sheet coils, and the connection between the sheet coils is the adjacent two-terminal circuit. It is obtained by pads provided on mutually facing surfaces of the sheet coil and located at the same position in plan view from the same side surface of the insulator.

[0005] An element of a product according to the present invention is a sheet coil in which a conductor is formed in the above-described coil shape on the front and back surfaces of a sheet-shaped insulator. A plurality of the elements using the sheet coil can be configured as one or two or more series two-terminal circuits as a whole. The number of coil turns constituting the terminal circuit can be set arbitrarily. Sheet coils can be manufactured in the same way as printed wiring boards,
It is possible to easily cope with a change in the number of coil turns of the sheet coil itself.

The coiled conductor on the back surface of the sheet coil is
The sheet coil has the same winding direction in plan view from the same side surface. This means that each sheet coil can be formed into a circuit having the same pattern except for external conduction and internal connection at the coil end. For even coil end of each sheet coil, coiled conductor on the front and back surfaces are both for example be achieved coil inner end in a standardized specification of performing via through holes of the same phase, the intermediate contact point on the series connection circuit corresponding sites, for example to the outer coil end can make this in uniform specifications that can be connected through a pad of the same phase, the external contact point on the circuit may be through-holes connecting the coils outer end e.g. .

That is, according to the present invention, it is possible to embody almost the same circuit pattern for all the sheet coils to be applied. Taking the case where the sheet coil of the present invention is applied to the coil of the transformer as an example,
As will be apparent from the following description, if the primary coil and the secondary coil of the transformer are one system, it is sufficient if there are two types of sheet coils in the form of a circuit pattern, one of the primary and secondary coils is two, and the other is one. Then, three types of sheet coils in a circuit pattern form are sufficient, or two types may be used depending on how to select the positions of the through holes.

As is apparent from the above, the present invention is suitable for the production of small lots and many kinds of products.

In the present invention, since the coil is not formed by coiling the conductor, there is no disconnection during production and no damage to the insulating film, and the reliability and yield are high.

By making the number of coil turns of each sheet coil the same, it is possible to easily control the number of coil turns of the target product by controlling the number of sheet coils. It is particularly advantageous when it is composed of coils.

The use of a plurality of sheet coils in a predetermined laminated or stacked configuration can reduce the height per unit number of turns. It is also possible to transmit information in an insulated state,
Wiring between the computer and the keyboard or between the main boards can be omitted. If necessary, in the present invention, a coil-shaped pattern having the same structure as the coil-shaped pattern formed by the conductors on the front and back surfaces is also formed inside the sheet-shaped insulator, and the thickness of the sheet coil mounted product per unit number of coil turns is reduced. That is, it does not hinder flattening.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS The invention will now be described with reference to the accompanying drawings, which show an embodiment of the invention. FIG. 1 is a perspective view showing an embodiment of the present invention in which constituent elements are separated, FIGS. 2 to 7 are front and back circuit pattern explanatory diagrams of the sheet coil shown in FIG. 1, and FIG. FIG. 9 is an enlarged perspective view of an IX part in FIG. 8, FIG. 10 is an enlarged perspective view of an X part in FIG.
FIG. 2 is a symbol display diagram of the transformer shown in FIG. 1.

The illustrated embodiment of the invention is for a transformer.

Reference numeral 1 denotes a sheet coil.
The conductor 3 is formed in a planar coil shape on the front and back surfaces of the sheet-shaped insulator 2. The coils of the conductors 3 on the front and back sides have the same winding direction in plan view from the same side of the insulator 2.

As shown in FIG . 1, a plurality of sheet coils 1
With a series two-terminal circuit as a primary coil I, connected so as to form a series two-terminal circuit as a secondary coil II
It is, laminated or SekiSo. See Figure 8 for details .
As described above, each sheet coil 1 is individually connected to the inner ends of the coils of the coiled body 3 on the front and back sides through the through holes 4 in the central region . Also shown in FIGS. 2, 3, 6 and 7
As shown in FIG. 8, in the predetermined two sheet coils in the series body of the sheet coils 1 forming the series two-terminal circuit, the outer ends of the coils on one side thereof are arranged as shown in FIG. 8. It is connected to a through hole 5 as a terminal provided at a corner of the sheet coil. On the other hand, the outer ends of the coils on the other surface of the two sheet coils are connected to pads 6 provided on required portions of the other surfaces. This
In each series two-terminal circuit which is configured by laminating or SekiSo a sheet coil 1 UNA, pads 6 of the adjacent sheet coils are interconnected.

In the example shown in the figure, the primary coil I is for one system and the secondary coil II is for two systems. If this is symbolized, it is as shown in FIG. The coil ends corresponding to the external nodes of the series circuit formed by the series connection of each sheet coil 1 in the secondary coils II and II made into two systems,
The two secondary coils II, II are connected to the through holes 5 occupying different phases at the corners of the sheet coil 1.

In the illustrated example, a required number of series two-terminal circuits are formed by using seven sheet coils 1. The circuit patterns on the front and back of these seven sheet coils 1 are shown in FIG.
From FIG. 7 can be obtained. FIG.
In FIG. 7, 1-1, 1-2, 1-3, 1-4, 1-
5, 1-6 and 1-7 are the first to seventh sheet coils in the order from the top in FIG. 1, FIGS. 2, 4, and 6 are surface circuit patterns, and FIGS. 3 shows a circuit pattern. As is clear from FIGS. 1 to 7, when the sheet coil lamination or the load to be formed into one system and two systems of coils is composed of seven sheet coils, 1, 3,
Sheets of the same circuit pattern can be applied to the sixth and seventh sheet coils, including the connection of intermediate nodes and external nodes on the series circuit to the fourth and fifth sheet coils. A coil is enough. Two types are sufficient depending on how to select the position of the through hole. If the primary coil and the secondary coil are of one system, it is sufficient that there are two types of sheet coils of the circuit pattern.

The sheet coil 1 is laminated or stacked in a predetermined series two-terminal circuit, and is assembled into an iron core 7 such as ferrite and a sheet coil mounted product as a transformer.

Three types of sheet coils having six windings on one side and 12 windings on both sides are prepared, and a total of two sheets are arranged in parallel as a primary side, and 11 sheets are connected in series as a secondary side so as to have a total of 132 turns. creating a transformer sandwiched ferrite core, type dc 12V alternately to that of the two primary coils, to give exchanges 100V on the secondary side coil. When 100 V AC of the secondary coil was applied to the ultrasonic motor as a drive power source, no problem such as heat generation was observed.

[0020]

As described above, according to the present invention, it is possible to cope with the production of small lots of many kinds and to improve the reliability and the yield.
In addition, the number of coil turns of the target product can be easily controlled by controlling the number of sheet coils, and further, a sheet coil laminated or loaded product having a small height per unit number of coil turns can be realized.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention in which constituent elements are separated.

FIG. 2 is a first, third, and third figures from the top in the embodiment shown in FIG. 1;
It is surface side circuit pattern explanatory drawing of the 6th, 6th, and 7th sheet coil.

FIG. 3 is an explanatory diagram of a circuit pattern on the back surface of the sheet coil of FIG. 2;

4 is an explanatory diagram of a circuit pattern on a surface side of a second sheet coil from the top in the embodiment of FIG. 1;

FIG. 5 is an explanatory diagram of a circuit pattern on the back side of the sheet coil of FIG. 4;

6 is an explanatory diagram of a circuit pattern on the front surface of the fourth and fifth sheet coils from the top in the embodiment of FIG. 1;

FIG. 7 is an explanatory diagram of a circuit pattern on the back side of the sheet coil of FIG. 6;

FIG. 8 shows a detailed plan view of a sheet coil.

FIG. 9 is an enlarged perspective view of an IX part in FIG. 8;

FIG. 10 is an enlarged perspective view of a portion X in FIG. 8;

FIG. 11 is a symbol display diagram of the transformer of FIG. 1;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 sheet coil 2 sheet insulator 3 conductor 4 plated through hole 5 plated through hole as terminal 6 pad 7 iron core

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Chen Eihei 1-15-15-209 Makizukadai, Sakai City, Osaka (72) Inventor Yoshiro Morishita 1-23-37, Senriyamanishi, Suita-shi, Osaka (72) Invention Person Mitsuru Sonoda 37-90 Shinda Market, Sennan-shi, Osaka (72) Inventor Shinji Oki 1-12-25-609 Minamishinmachi, Matsubara-shi, Osaka (56) References JP-A-3-181191 (JP, A) 1979-91742 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01F 17/00, 27/28, 41/04

Claims (4)

(57) [Claims] 1. A plurality of sheet coils in which a conductor is formed in a planar coil shape having the same winding direction in plan view from the same side of the insulator on the front and back surfaces of the sheet insulator.
Stacked or stacked, a plurality of stacked or stacked
At least one series two-terminal circuit with sheet coil
Is a stacked or stacked article, wherein each of the plurality of stacked or stacked sheet coils is
Are individually the coil inner end of the coiled conductor on the front and back surfaces are connected to the laminated or SekiSo been multiple Shitokoi
At least one series two-terminal circuit constituted by
In the predetermined sheet coil, the coil outer end on one side thereof is connected to a through hole as a terminal provided on the sheet coil, and the coil outer end on the other side is connected to a pad provided on the other side, The remaining sheet coil has a coil outer end on one side connected to a pad provided on the surface, and a coil outer end on the other surface connected to a pad provided on the other surface. Laminate or load goods. 2. A plurality of sheet coils formed on a back surface of a sheet-shaped insulator in a planar coil shape in which a conductor forms the same winding direction in plan view from the same side of the insulator.
Stacked or stacked, a plurality of stacked or stacked
Two or more series two-terminal circuits composed of sheet coils
The stacked or stacked sheet coil, wherein each of the plurality of stacked or stacked sheet coils is
Are individually the coil inner end of the coiled conductor of the back surface is connected to the laminated or SekiSo been multiple Shitokoi
In each of the two or more series two-terminal circuits constituted by a single coil , a predetermined sheet coil has an outer end on one side connected to a through hole as a terminal provided on the sheet coil, and a coil on the other side. The outer end is connected to a pad provided on the other surface, and the remaining sheet coil has a coil outer end on one surface connected to a pad provided on the surface, and the coil outer end on the other surface is connected to the other surface. A sheet coil laminated or loaded article characterized by being connected to a provided pad. 3. A plurality of sheet coils in which a conductor is formed in a planar coil shape on the front and back surfaces of the sheet-shaped insulator, the conductors forming the same winding direction in plan view from the same side of the insulator.
Stacked or stacked, a plurality of stacked or stacked
At least one series two-terminal circuit with sheet coil
There a sheet coil laminated or SekiSo article is composed, at least one of the series 2-terminal circuit has conductors of at least two sheets coils adjacent is constructed by connecting between the sheet coil The connection between the sheet coils is obtained by pads provided on mutually facing surfaces of the adjacent sheet coils and located at the same position in plan view from the same side surface of the insulator. Sheet coil lamination or loading products. 4. A plurality of sheet coils in which a conductor is formed in a planar coil shape on a back surface of a sheet-shaped insulator, in which conductors form the same winding direction in plan view from the same side of the insulator.
Stacked or stacked, a plurality of stacked or stacked
Two or more series two-terminal circuits composed of sheet coils
A sheet coil laminated or SekiSo article is, the two or more series two-terminal circuit is a conductor of at least two sheets coils adjacent is constructed by connecting between the sheet coil, The connection between the sheet coils is obtained by pads provided on mutually facing surfaces of the adjacent sheet coils and located at the same position in plan view from the same side surface of the insulator. Sheet coil lamination or loading.