JPH08273448A - Flexible conductive line structure - Google Patents

Abstract

PURPOSE: To suitably feed a large current, or a high-frequency current, or a steep change current and improve flexibility by providing a three-layer structure constituted of the first and second conductive line structures and an insulator. CONSTITUTION: A flexible conductive line structure of a three-layer structure is constituted of the first conductive line structure 10, the second conductive line structure 12, and an insulator 14. The structure 10 contains multiple first conductive lines arranged in parallel on a line, they are insulated from each other at the intermediate section, and they are electrically connected together at both end portions 16, 18. The structure 12 has the same structure as that of the structure 10, the insulator 14 is provided between the structures 10, 12, and the distances between opposite conductive lines between the first and second conductive lines are kept nearly constant. When currents are fed to the structures 10, 12 in opposite directions, the overall inductance can be reduced. When the number of the conductive lines is increased, a large current can be fed. This flexible conductive line structure can be easily bent because it is flexible, and it is suitable for the propagation of a large current and a high-frequency current signal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conductive line structure suitable for supplying a large current or a high frequency or a steeply changing current.

[0002]

2. Description of the Related Art In the case of constructing a circuit for high-frequency signals or flowing a current that changes abruptly, the inductance of a signal propagation line often causes a problem. In this case, as one method for reducing the inductance of the conductive line, there is a method in which two conductive lines are arranged in parallel and the currents flow in opposite directions. If these two self-inductances are L1 and L2, respectively, and the mutual inductance between the two conductive lines is M, the total inductance is L1 +
Since L2-2M, the total inductance can be greatly reduced by appropriately adjusting the configuration of the conductive line.

[0003]

However, when it is desired to pass a large current, it is difficult to pass a large current through a thin conductive line, and therefore it is necessary to use a thick line. In this case, in order to reduce the inductance, two wide conductors are arranged in parallel as shown in FIG. 3, and a current is applied to these two conductors in opposite directions to cancel the inductance. Can be considered. However, when a reverse current is applied to the parallel conductors, a repulsive force is generated between the conductors, and as shown in FIG. 3, the reverse current tends to flow at the largest separation distance. It becomes impossible to reduce the effect of Further, in the case of a high frequency signal, the influence of the skin effect appears strongly, so that the resistance value increases. Also,
When a circuit is constructed using a wide conductor as shown in FIG. 3, the conductor is so rigid that realization of the circuit is extremely troublesome.
In addition, since it occupies a relatively large space, there is an inconvenience such as an increase in size of the entire apparatus. Therefore, a large current, a high frequency, or a signal that changes abruptly can be propagated with low inductance and low resistance, and realization of a conductive line suitable for miniaturization is awaited.

It is an object of the present invention to provide a flexible conductive line structure suitable for passing a large current or a high frequency or a steeply changing current.

[0005]

A flexible conductive line structure according to the present invention includes a plurality of first conductive lines which are arranged in parallel and in a row in parallel with each other and are insulated from each other.
A first electrically conductive line structure to which electrically conductive lines are electrically connected, and a plurality of first electrically conductive line structures that are arranged substantially parallel to each other and correspond to the plurality of first electrically conductive lines of the first electrically conductive line structure and are insulated from each other. It is provided between a first conductive line structure and a second conductive line structure including two conductive lines and electrically connected to the plurality of second conductive lines at both ends, and the first and second conductive line structures are provided. And an insulator that keeps the distance between the corresponding conductive lines of the two conductive lines substantially constant.

Further, the first and second conductive line structures are characterized in that the currents are passed in opposite directions to reduce the inductance.

[0007]

1 is an exploded perspective view of an embodiment of a flexible conductive line structure according to the present invention. This flexible conductive line structure includes a first conductive line structure 10 and a second conductive line structure 12.
And the insulator 14. First conductive line structure 10
Includes a plurality of first conductive lines that are parallel to each other and arranged in a line. The intermediate portions of the plurality of first conductive wires are insulated from each other and are electrically connected at both end portions. In FIG. 1, the shaded middle part of the first conductive line structure 10 is a part in which a plurality of mutually insulated first conductive lines are arranged in parallel in a row.
Reference numeral 8 is a portion where a plurality of first conductive lines are electrically connected. In the middle part, a plurality of conductive wires arranged in parallel in a line are insulated from each other by an insulating coating or the like, and both end parts 16
In Nos. 18 and 18, the insulating coating is removed and the metal of the conductive wire is weld-molded. The second conductive line structure 12 also has a structure similar to that of the first conductive line structure 10, and has an intermediate portion (hatched portion) that includes a plurality of second conductive wires that are arranged in a row substantially in parallel and are insulated from each other. , Both ends 20 and 22
Are welded and molded to electrically connect a plurality of second conductive wires. The insulator 14 is provided between the first and second conductive line structures 10 and 12, and maintains the distance between the corresponding conductive lines of the first and second conductive lines substantially constant. . Thus, the flexible conductive line structure of the present invention,
It has a three-layer structure of the first conductive line structure 10, the second conductive line structure 12, and the insulator 14, is highly flexible, and can be bent easily and freely. In addition, at least a part of the periphery of the conductive line structure having the three-layer structure is covered with an insulating coating, and when the line is bent, the first conductive line structure 10 and the second conductive line structure 10 are formed.
It is desirable that the positional relationship with the conductive line structure 12 hardly changes. Alternatively, the insulating coating around the plurality of conductive lines of the first and second conductive line structures 10 and 12 may be adhered to the insulator 14 without being covered with the insulating coating. In addition, the flexible conductive line structure of FIG. 1 is a parallel plate having a three-layer structure as a whole, but at both ends, if a plurality of conductive lines are electrically connected,
Any shape may be used, and it can be formed into any shape according to the structure, shape, etc. of the connection partner.

FIG. 2 is a cross-sectional view of the central portion of the embodiment of FIG. 1 taken along a plane substantially perpendicular to the conductive line. First conductive line structure 10, second conductive line structure 12 and insulator 14
3 has a cross-section of a three-layer structure. The first and second conductive line structures 10 and 12 are configured by arranging a plurality of conductive lines having the same thickness in parallel and in a line. The plurality of conductive lines are arranged in parallel with each other with a substantially constant distance therebetween via the insulator 14. Then, currents flowing in opposite directions are passed through the first and second conductive line structures 10 and 12. In FIG. 2, a current is applied to the first conductive line structure 10 in the direction from the front to the paper surface (mark X), and a current is applied to the second conductive line structure 12 in the direction from the paper surface to the front ( Black circle). Therefore, the first and second conductive line structures 10 and 1
Since currents flow in opposite directions to each other in 2, the total inductance is obtained by subtracting twice the mutual inductance M between the self-inductances of the first and second conductive line structures 10 and 12 (L1 + L2). Therefore, the inductance can be significantly reduced. Therefore, even if a high frequency signal is supplied, the inductance is extremely low, and the total impedance of the line can be significantly reduced.
Further, although a skin effect occurs in the case of a high frequency signal, a current flows in a branched manner into a plurality of conductive lines, and these conductive lines are insulated from each other, so that a conductor with an integral structure having the same conductive cross-sectional area is formed. By comparison, the total surface area is much larger and there is no escape area for the current flowing through the conductor wires insulated from each other, so that the effect of the skin effect can be greatly reduced. Further, the plurality of conductive wires forming the intermediate portion of the first and second conductive line structures 10 and 12 are the same in number, and the corresponding conductive wires are arranged in parallel at a constant distance via the insulator 14 and bent. Since the positional relationship does not change even when the current is applied, the total inductance is significantly reduced when the current flows in the opposite direction, and the low inductance state is maintained even when the conductive line structure is bent. Can be maintained.

The preferred embodiment of the present invention has been described above.
It will be apparent to those skilled in the art that the present invention is not limited to the above-described embodiments, and various changes and modifications can be made without departing from the gist of the present invention. For example, in the embodiment of FIG. 1, the whole has a parallel plate shape of a three-layer structure, but at least both end portions may have any shape as long as a plurality of conductive lines are electrically connected. . Thus, it is possible to appropriately shape the shapes of both ends of the connection target of any shape for proper connection.

[0010]

Since the three-layer structure of the two conductive line structures and the insulator is flexible, it can be bent easily, which is very convenient for a circuit configuration. Since a region in which a plurality of conductive wires are arranged in parallel in a line is provided in the intermediate portion, a current branches and flows into each conductive wire, and the influence of the skin effect can be significantly reduced. Further, the total inductance can be significantly reduced by causing the currents in the opposite directions to flow in the first and second conductive line structures. If the number of conductive lines of each conductive line structure is increased, a large current can be passed, and the number of conductive lines can be increased very easily. Further, the mutual positional relationship of the three-layer structure of the flexible conductive line structure can be maintained even when bent, which is extremely convenient. Therefore, it is possible to provide a flexible conductive line structure suitable for propagating a large current and a high frequency current signal.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing the configuration of an embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along the plane substantially perpendicular to the direction of current flow in the central portion of FIG.

FIG. 3 is an exploded perspective view showing an example of a current flow path in a pair of conventional parallel-type conductors.

[Explanation of symbols]

 10 First Conductive Line Structure 12 Second Conductive Line Structure 14 Insulator

Claims (3)

[Claims] 1. A first conductive line structure including a plurality of first conductive lines arranged in parallel with each other in a row and insulated from each other, wherein the plurality of first conductive lines are electrically connected at both ends thereof. The plurality of second conductive lines are arranged substantially in parallel in a row in correspondence with the plurality of first conductive lines of the first conductive line structure and are insulated from each other. Are provided between the second electrically conductive line structure electrically connected to each other and the first and second electrically conductive line structures, and the distance between the first and second electrically conductive lines corresponding to each other is substantially constant. A flexible conductive line structure, comprising: 2. The flexible conductive line structure according to claim 1, wherein the first and second conductive line structures are supplied with currents in opposite directions to reduce inductance. 3. The flexible conductive line structure according to claim 1, wherein at least a part of the periphery of the first and second conductor line structures and the insulator is covered with an insulating coating.