JPH06163238A - Coil component - Google Patents

Abstract

PURPOSE:To provide a coil component, which is easy in manufacturing method and is low-cost in manufacturing. CONSTITUTION:An insulative tape 1 with a conductor path 2 for coil provided on its surface is plaited in such a way that the path 2 is wound to form a square-shaped coil. External electrodes 20 and 21 are respectively provided on both end parts of the tape 1 and the electrodes are electrically connected to the path 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coil component used for constructing an electronic circuit or the like.

[0002]

2. Description of the Related Art Conventionally, a coil component having a bobbin structure in which a conductor wire is wound around a body of a core, or a laminated structure in which an insulating sheet and a coil conductor are stacked is known. There is. By the way, since these coil components need to be assembled by assembling a plurality of members,
There is a problem that the manufacturing method is complicated and the manufacturing cost is high. Further, in order to provide the coil component having the bobbin structure with the magnetic shield property, it is necessary to coat the coil component with resin containing magnetic powder.

Therefore, an object of the present invention is to provide a coil component which is easy to manufacture and has a low manufacturing cost.

[0004]

In order to solve the above problems, in the coil component according to the present invention, an insulating tape having a coil conductor path provided on the surface thereof is wound around the coil conductor path. It is characterized in that it is folded so as to be arranged as a coil and a coil is formed. In the above configuration, for example,
The coil component of the equivalent circuit shown in FIG. 10 is formed. This coil component is manufactured by folding an insulating tape provided with a conductor path for a coil, and the complicated work of assembling a plurality of members as in the conventional case is eliminated.

Further, by forming the insulating tape from a material mixed with magnetic powder or using an insulating tape having a surface coated with a magnetic material, the coil component can easily have a magnetic shielding property. .

[0006]

Embodiments of the coil component according to the present invention will be described below with reference to the accompanying drawings. [First Embodiment, FIGS. 1 to 10] In the first embodiment, a case will be described in which a coil component in which a coil conductor path is wound in a square shape is manufactured.

As shown in FIG. 1, a strip-shaped insulating tape 1
Is made of polyimide resin or the like. A conductor path 2 for a coil is arranged in the longitudinal direction of the tape 1 on the edge portion on the back side of the surface of the insulating tape 1 by means of printing or the like. The tape 1 is valley-folded at a position separated from the end portion by a predetermined dimension and along a direction orthogonal to the longitudinal direction of the tape 1 (that is, the alternate long and short dash line 5 shown in FIG. 1). Stack as shown in FIG. After that, the valley-folding is performed along the direction in which the end a1 on the inner side of the position where the tape 1 is valley-folded is an apex and is inclined 45 degrees with respect to the longitudinal direction of the tape 1 (that is, the alternate long and short dash line 6 shown in FIG. 2). Then, the direction of the tape 1 is changed by 90 degrees and the coil conductor path 2 is bent at a right angle (see FIG. 3).

Next, a valley is formed along a direction orthogonal to the longitudinal direction of the tape 1 (that is, the alternate long and short dash line 7 shown in FIG. 3), with the end a2 on the front side of the valley-folded position of the tape 1 as the apex. Fold the tape 1 in the direction 1 as shown in Figure 4.
Change 80 degrees. After that, the tape 1 is valley-folded along the direction inclined at 45 degrees with respect to the longitudinal direction of the tape 1 with the right end portion a3 of the valley-folded position as the apex (that is, the alternate long and short dash line 8 shown in FIG. 4). Then, the direction of the tape 1 is changed by 90 degrees and the coil conductor path 2 is bent at a right angle (see FIG. 5).

Next, a valley is formed along the direction orthogonal to the longitudinal direction of the tape 1 (that is, the alternate long and short dash line 9 shown in FIG. 5), with the end a4 on the back side of the valley-folded position of the tape 1 as the apex. Fold the tape 1 in the direction of 18 as shown in FIG.
Change 0 degrees. After this, the tape is folded in a direction in which the end portion a5 on the front side of the valley-folded position of the tape 1 is an apex and the tape is inclined by 45 degrees with respect to the longitudinal direction of the tape 1 (that is, the one-dot chain line 1 shown in FIG. 6).
0), the direction of the tape 1 is changed by 90 degrees, and the coil conductor path 2 is bent at a right angle (see FIG. 7).

Next, the tape 1 is valley-folded along the direction orthogonal to the longitudinal direction of the tape 1 (that is, the alternate long and short dash line 11 shown in FIG. 7) with the right end portion a6 of the valley-folded position as the apex. Then, change the direction of tape 1 to 1 as shown in FIG.
Change 80 degrees. Thereafter, the left end a7 of the position where the tape 1 is valley-folded is an apex, and the tape is inclined by 45 degrees with respect to the longitudinal direction of the tape 1 (that is, the chain line 1 shown in FIG.
2) A valley fold is made along the line 2) to change the direction of the tape 1 by 90 degrees and the coil conductor path 2 is bent at a right angle (see FIG. 9).

Next, after the tape 1 is cut into a predetermined product size, external electrodes 20 and 21 are provided at both ends of the tape 1 to form a coil component. Each of the external electrodes 20 and 21 is electrically connected to the terminal end of the coil conductor path 2.
If necessary, an exterior material made of resin or the like may be attached to the coil component. FIG. 10 shows an equivalent electric circuit diagram of the obtained coil component.

The coil component thus obtained has one winding.
It is equipped with a wound square coil. Then, by repeating the above manufacturing procedure, it is possible to manufacture a coil component having a larger number of turns. This coil component is
There is no complicated work of assembling a plurality of members as in the conventional case, and it can be easily manufactured by simply folding the insulating tape.

[Second Embodiment, FIGS. 11 to 19] In the second embodiment, a case will be described in which a coil component in which a coil conductor path is wound in a rectangular shape is manufactured. As shown in FIG. 11, the strip-shaped insulating tape 31 is made of a polyimide resin mixed with magnetic powder. The insulating tape 1 in the first embodiment may also be magnetic. A conductor path 32 for a coil is arranged in the longitudinal direction of the tape 31 by means of printing or the like at the edge portion on the back side of the surface of the insulating tape 31. This tape 31 is valley-folded at a position separated from the end by a predetermined dimension and along a direction inclined by 45 degrees with respect to the longitudinal direction of the tape 31 (that is, the alternate long and short dash line 35 shown in FIG. 11). Change the direction of the tape 31 by 90 degrees.
After this, the end b1 on the right side of the position where the tape 31 is valley-folded
Is apex, and is valley-folded along a direction orthogonal to the longitudinal direction of the tape 31 (that is, the alternate long and short dash line 36 shown in FIG. 12) to change the direction of the tape 31 by 180 degrees and to form the coil conductor path 32. Bend at a right angle (see Figure 13).

Next, the tape 31 is valley-folded along the width of the tape 31 along the direction orthogonal to the longitudinal direction of the tape 31 (ie, the alternate long and short dash line 37 shown in FIG. 13) to form the tape 31. Change the direction of 180 degrees. After that, the tape 31 is folded along the direction in which the end b2 on the right side of the position where the tape 31 is valley-folded is an apex and is inclined by 45 degrees with respect to the longitudinal direction of the tape 31 (that is, the alternate long and short dash line 38 shown in FIG. 14). Then, the direction of the tape 31 is changed by 90 degrees and the coil conductor path 32 is bent at a right angle (see FIG. 15).

Next, the tape 31 is placed at a predetermined position and
Fold along the direction orthogonal to the longitudinal direction of the tape 31 (that is, the alternate long and short dash line 39 shown in FIG. 15),
The direction of the tape 31 is changed by 180 degrees. After this, tape 3
1 is valley-folded along the direction (that is, the alternate long and short dash line 40 shown in FIG. 16) inclined at 45 degrees with respect to the longitudinal direction of the tape 31 with the end b3 on the front side of the position where 1 is valley-folded as the apex. While changing the direction of 31 by 90 degrees, the coil conductor path 32 is bent at a right angle (see FIG. 17).

Then, the tape 31 is folded along the width of the tape 31 along the direction orthogonal to the longitudinal direction of the tape 31 (that is, the alternate long and short dash line 41 shown in FIG. 17) to form a tape. Change direction 180 degrees. After this, the tape 31 is folded along the direction in which the left end b4 of the position where the tape 31 is valley-folded is an apex and is inclined by 45 degrees with respect to the longitudinal direction of the tape 31 (that is, the alternate long and short dash line 42 shown in FIG. 18). Then, the direction of the tape 31 is changed by 90 degrees and the coil conductor path 32 is bent at a right angle (see FIG. 19).

Next, after the tape 31 is cut into a predetermined product size, the external electrodes 50 and 51 are formed on both ends of the tape 31.
Is provided. The external electrodes 50 and 51 are electrically connected to the terminal ends of the coil conductor paths 32 to form coil components. The coil component thus obtained is provided with a rectangular coil having one turn and also has a magnetic shield property. As in the case of the first embodiment, a coil component having a large number of turns can be manufactured by repeating the manufacturing procedure.

[Other Embodiments] The coil component according to the present invention is not limited to the above-mentioned embodiment, but can be variously modified within the scope of the gist thereof. The method of folding the insulating tape is not limited to the method of the first and second embodiments, and may be any other method as long as the coil conductor path is wound and disposed.

The inductance value of the coil is adjusted by the position of the coil conductor path provided on the insulating tape and the strength of the magnetic shield. The strength of the magnetic shield of the coil can be easily adjusted by changing the content ratio of the magnetic powder mixed in the insulating tape or by using magnetic materials having different magnetic permeability for the magnetic powder. The DC resistance value may be changed by changing the width of the coil conductor path.

Furthermore, the number of the coil conductor paths does not have to be one, and two or more coil conductor paths may be arranged in parallel on the same surface of the insulating tape, or two or more coil conductor paths may be provided. The coil conductor paths may be provided on the front and back surfaces of the insulating tape.

[0021]

As is apparent from the above description, according to the present invention, the coil is manufactured by folding the insulating tape provided with the coil conductor path, so that a plurality of members are assembled as in the conventional case. Complicated work can be eliminated. Therefore, it is possible to obtain a coil component that is easy to manufacture and inexpensive to manufacture.

[Brief description of drawings]

1 to 10 show a first embodiment of a coil component according to the present invention.

FIG. 1 is a perspective view showing a manufacturing procedure of a coil component.

FIG. 2 is a perspective view showing the manufacturing procedure of the coil component following FIG.

FIG. 3 is a perspective view showing the procedure for manufacturing the coil component, which is subsequent to FIG. 2;

FIG. 4 is a perspective view showing the procedure for manufacturing the coil component, following FIG. 3;

FIG. 5 is a perspective view showing the procedure for manufacturing the coil component, which is subsequent to FIG. 4;

FIG. 6 is a perspective view showing the procedure for manufacturing the coil component, following FIG. 5;

FIG. 7 is a perspective view showing the procedure for manufacturing the coil component, following FIG. 6;

FIG. 8 is a perspective view showing the procedure for manufacturing the coil component, which is subsequent to FIG. 7;

FIG. 9 is a perspective view showing the appearance of a coil component.

FIG. 10 is an equivalent electric circuit diagram of the coil component shown in FIG. 11 to 19 show a second embodiment of the coil component according to the present invention.

FIG. 11 is a perspective view showing the manufacturing procedure of the coil component.

FIG. 12 is a perspective view showing the procedure for manufacturing the coil component, following FIG. 11;

FIG. 13 is a perspective view showing the procedure for manufacturing the coil component, following FIG. 12;

FIG. 14 is a perspective view showing the procedure for manufacturing the coil component, which is subsequent to FIG. 13;

FIG. 15 is a perspective view showing the procedure for manufacturing the coil component, which is subsequent to FIG. 14;

FIG. 16 is a perspective view showing the procedure for manufacturing the coil component, which is subsequent to FIG. 15;

FIG. 17 is a perspective view showing the procedure for manufacturing the coil component, which is subsequent to FIG. 16;

FIG. 18 is a perspective view showing the procedure for manufacturing the coil component, which is subsequent to FIG. 17;

FIG. 19 is a perspective view showing the outer appearance of a coil component.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Insulating tape 2 ... Coil conductor path 31 ... Insulating tape 32 ... Coil conductor path

Claims (1)

[Claims] 1. A coil component comprising a coil formed by folding an insulating tape having a coil conductor path on its surface so that the coil conductor path is wound and disposed.