JP2002334615A - Complex wire and connector with wire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide complex wires with small signal loss and little disorder of impedance and connectors with wires equipped with same. SOLUTION: With the complex wires obtained by covering with an outer crust 29 a plurality of wires 21 and drain wires 22, arranged in parallel with each other, formed by wrapping core wires 23 consisting of one or a plurality of core strands 23A with dielectrics 25, a single or a plurality of wires 21 and a single or a plurality of drain wires 22 are arranged in parallel in cross section at right angles with the length direction of the wires, each of which has a plurality of core wires 23 arrayed in close contact with each other in line with the above arrangement direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite electric wire and a connector provided with the electric wire.

[0002]

2. Description of the Related Art As an electric wire of this type and a connector for connecting the electric wire, for example, the one disclosed in Japanese Patent Application Laid-Open No. 10-502484 is known.

In this known electric wire and connector, a plurality of composite electric wires 60 are connected to a connector 50 as shown in FIGS. Each composite electric wire 60
As is often seen in FIG. 5, it has a plurality of electric wires 61 and a drain wire 62. The electric wire 61 has a dielectric 61B around a core wire 61A, and the drain wire 62 is a single body. A plurality of such electric wires 61 and drain wires 62 are arranged in one direction and covered with an outer cover 63 to form one composite electric wire 60.

[0004] On the other hand, the connector 50 has a plurality of connection portions 51 of a plurality of terminals held by a housing arranged at predetermined intervals. Here, the outer skin and the dielectric are removed at the ends, and the connectors are exposed. Core wire 61A and drain wire 6
2 are connected. Thereafter, a mating housing serving as a lid is attached to the housing, and the periphery of the connection portion 51 is covered. The composite electric wire 60 is connected to the connection portion 51.
After being connected to the shield member 55, it is covered by the shield body 55.

[0005]

In such a known electric wire and connector, the distance between the two core wires 61A and the distance between the core wire 61A and the drain wire 62 of the composite electric wire 60 shown in FIG. Connection part 51 of connector 50 shown
The distance between them does not match. Therefore, at the time of connection, as shown in FIG. 4, the other core wire and the drain wire 62 located on both sides of one core wire 61 </ b> A are curved to the side so that the interval matches the interval of the connection portion 51.

Accordingly, the core wire or the drain wire is
The distance between them varies depending on the longitudinal position of the electric wire, and the exposed length also differs.

As a result, the impedance in the vicinity of the connecting portion is disturbed. In addition, since the cross-sectional area of the core wire is not so large in this known electric wire, a large loss occurs in the transmission signal.

The loss can be reduced by increasing the cross-sectional area of the core wire, but there is a limit on the diameter of the core wire from the viewpoint of high-density mounting. It is also conceivable to make the cross section of the core wire elliptical or elliptical, but this is difficult in manufacturing and is not practical.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a composite electric wire having a small impedance disturbance and a small signal loss, and an electric wire connector having the same.

[0010]

A composite electric wire according to the present invention comprises a plurality of electric wires and a drain wire which are formed by surrounding a core wire composed of one or more core strands with a dielectric and which are arranged in parallel with each other. Obtained by covering with hull.

In such a composite electric wire, in the present invention, one or more electric wires and one or more drain wires are arranged in a line in a cross section perpendicular to the length direction of the electric wire. Has a plurality of core wires, and the plurality of core wires are positioned in contact with each other in the direction of the arrangement.

According to the present invention, by selecting one of a plurality of core wires for each wire, the wires have signal transmission paths substantially parallel to each other, and the impedance is not disturbed. The plurality of core wires are in contact with each other and are electrically one core wire, and the cross-sectional area for signal transmission is extremely large, and signal loss is reduced.

In the present invention, the electric wire may be such that a plurality of core wires of the electric wire are wound by a conductive tape such as a metal tape. By doing so, the contact between the core wires becomes more reliable.

The distance between any one of the plurality of core wires of the electric wire and any one of the plurality of core wires of the other electric wires adjacent to the electric wire may be such that an interval between the adjacent wires of the connector is smaller. It is desirable that the distance between the parts is substantially the same. By doing so, when connecting to the connector, the one core wire is selected, and the signal transmission paths between the electric wires are reliably parallelized. In that case, if it is assumed that the interval between the corresponding core wires of two adjacent electric wires is substantially the same as the interval between the adjacent connection portions of the connector, it is sufficient to select the core wire at the corresponding position, Will be easier.

In the present invention, when the drain wire has a plurality of core wires, it is preferable that the plurality of core wires are in contact with each other and are positioned in accordance with the direction of arrangement of the electric wires. In this case, the drain wire can be selected in the same manner as the core wire.

The composite electric wire of the present invention and a connector in which connection portions of a plurality of terminals are arranged in a housing, and at least one of each electric wire and at least one of the drain wires of the composite electric wire. By connecting the core wires to the corresponding connection portions in a state where they are parallel to each other, a connector with an electric wire with small disturbance of impedance and small signal loss is obtained.

At this time, if the plurality of composite electric wires are arranged in a plurality of stages with the arrangement directions of the respective electric wires being parallel to each other and are connected to the corresponding connection portions, the plurality of electric wires connected to the plurality of electric wires are provided. With this connector is obtained.

[0018]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 to FIG.
An embodiment of the present invention will be described based on the above.

FIG. 1 shows a part of a connector 10 and a composite electric wire 20 connected thereto. The connector 10 with the cover removed is shown with a two-dot chain line except for the above part.

The connector 10 includes a base housing 1
A plurality of terminals 12 are implanted in one, and connection portions 13 formed at one end of the terminals 12 are arranged at predetermined intervals.

The contact portion formed at the other end of the terminal 12 is located in a terminal insertion hole 14 formed at the end of the base housing, and is connected to a mating connector (not shown). It comes into contact with the contact portion of the terminal of the mating connector that enters the insertion hole 14. However,
Since the contact portion 13 of the terminal 12 is not the main feature of the present invention, it is not shown in the drawing.

The composite electric wire 20 is shown in FIG.
As can be seen from FIG. 2, the power supply device has a signal transmission wire 21 and a grounding drain wire 26, and in the illustrated example, two wires 21 and two drain wires 22
Is housed inside.

The electric wire 21 has a plurality of core wires 23A composed of a plurality of core wires 23A arranged in a horizontal direction in a state of three contacts, and these core wires 23 are bundled by a conductive tape 24 such as a metal tape, and the outside thereof is bundled. It is surrounded by a dielectric 25. That is, the electric wire 21 has a flat shape in the arrangement direction of the three core wires 23. In the present embodiment, the two electric wires 21 are arranged adjacent to each other in the direction of the arrangement.

The drain wire 22, like the electric wire 21, has three core wires 26 in contact with each other in the above arrangement direction. The drain wires 22 are located on both sides of the two electric wires 21.

The two electric wires 21 and the two drain wires 22 are wound around a conductive tape 27, and an outer skin 29 surrounds the outside thereof. Thus, one composite electric wire 20 is configured.

In use, the outer surface 29 of the composite electric wire 20 is removed together with the conductive tape 27 by a predetermined length on the end side, so that the electric wire 21 and the drain wire 22 are exposed. Next, the dielectric 25 is removed together with the conductive tape 24 at the distal end of the electric wire 21 so that the core wire 23 is exposed. Each electric wire 21
Have three core wires 23, of which core wires 2 at positions corresponding to connection portions 13 of connector 10 are provided.
The other core wire 23 is cut at the position of the end face of the dielectric 25 while keeping the 3 protruding from the dielectric 25. Regarding the drain wires 22, of the three core wires 26 of each drain wire 22, the core wires 26 other than the core wire 26 at the position corresponding to the connection portion 13 of the connector 10 are appropriately cut.

Thereafter, the electric wire 21 and the drain wire 22
Each core wire at a position corresponding to the connection portion 13 is connected to the corresponding connection portion 13. The connection is made by solder or the like. Thus, all the core wires 23 and 26 connected to the connection portion 13 maintain the same length while being parallel.

After the connection of the electric wire 21 and the drain wire 22, the composite electric wire 20 is fixed to the base housing 11 with the fitting 15 or the like. This fixing is performed by the electric wire 21 and the drain wire 2
2 may be performed before the above connection. Finally, a cover (not shown) is attached to the base housing 11,
Thus, a connector with an electric wire is obtained. According to such a composite electric wire, the substantial cross-sectional area of the core wire of the electric wire can be secured large while the size of the connector in the thickness direction (vertical direction in FIG. 2) is kept small, and signal loss is extremely reduced. If the core wires connected to the connection portion of the connector are specified to those at the position corresponding to the connection portion, they are parallel and equal in length, and the disturbance of impedance is eliminated.

The present invention is not limited to the examples shown in FIGS. 1 and 2, but can be variously modified. For example, as shown in FIG. 3, the drain wire 22 may have one core wire 26 disposed on both sides of the two electric wires 21. In this case, depending on the positional relationship between the connector and the connection portion, the core wire 26
May not be completely parallel to the core wire 23 of the electric wire 21, but the electric wire 21 for signal transmission has three core wires 23, so there is no problem in signal transmission.

Also, in FIGS. 1 to 3, the core wires 23, 26
Was bundled with conductive tape such as metal tape,
The conductive tape is not particularly required as long as the respective core wires are surely in contact with each other.

Regarding the interval between the plurality of core wires of the electric wire and the drain wire, if any one of the core wires is selected, it is preferable that the connection can be made to the connecting portion of the connector while maintaining the parallel state. In this case, if a plurality of core wires are selected at a corresponding position among the plurality of core wires, for example, a core wire located at the center is selected and these correspond to the connection portions of the connector, the convenience of the core wire selection work is improved. Is more preferable.

Further, the core wire may be composed of a plurality of core strands or a single core wire. The core wires may be simply in contact with each other, or may be connected by solder or the like.

[0033]

As described above, in the present invention, each electric wire has a plurality of cores, and these cores are arranged in contact with the arrangement direction of the plurality of electric wires in a contact state. According to the selection, corresponding to the connection portion of the connector, the wires can be connected to the connection portion while being parallel to each other, so that the impedance is not disturbed, and the cross-sectional area of the core wire is increased and the signal loss is reduced. Furthermore, the conventional work of bending and deforming the core wire corresponding to the connection part has been eliminated,
Connection work is also simplified. In addition to these, when the composite electric wire is connected to the connector, the size of the cross section in the direction perpendicular to the arrangement direction can be reduced, and the device can be reduced in size.

[Brief description of the drawings]

FIG. 1 is a plan view showing a state where a composite electric wire according to an embodiment of the present invention is connected to a connector.

FIG. 2 is a cross-sectional view of the composite electric wire used in FIG.

FIG. 3 is a cross-sectional view of a composite electric wire according to another embodiment.

FIG. 4 is a plan view of a conventional connector with an electric wire.

FIG. 5 is a sectional view of the composite electric wire used in FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Connector 13 Connection part 20 Composite electric wire 21 Electric wire 22 Drain wire 23 Core wire 23A Core wire 24 Conductive tape 25 Dielectric 29 Outer sheath

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5G309 FA05 5G311 CA01 CB02 CC02 CD05 CE01 CE02 CF02 5G313 AB05 AC11 AD01 AD02 AE01 5G355 AA10 BA04 BA12 5G375 AA12 CA03 CA19 DB11 DB16

Claims (7)

[Claims] 1. A composite electric wire obtained by enclosing a plurality of electric wires and a drain wire which are formed by surrounding a core wire composed of one or a plurality of core strands with a dielectric and arranged in parallel with each other, comprising: With a cross section perpendicular to the length direction,
One or more electric wires and one or more drain wires are arranged in a line, each electric wire has a plurality of core wires,
The composite electric wire, wherein the plurality of core wires are positioned in contact with each other in the direction of the arrangement. 2. The composite electric wire according to claim 1, wherein a plurality of core wires of the electric wire are wound by a conductive tape. The distance between any one of the plurality of core wires of the electric wire and any one of the plurality of core wires of another electric wire adjacent to the electric wire is equal to that of the connector. The composite electric wire according to claim 1 or 2, wherein the distance between adjacent connection portions is substantially the same. 4. The composite electric wire according to claim 3, wherein an interval between core wires of two adjacent electric wires corresponding to each other is substantially the same as an interval between adjacent connection portions of the connector. 5. The composite electric wire according to claim 1, wherein the drain wire has a plurality of core wires, and the plurality of core wires are in contact with each other and are positioned in accordance with the direction of the arrangement of the wires. . 6. A composite electric wire according to claim 1, further comprising a connector in which connection portions of a plurality of terminals are arranged in a housing. Wherein at least one core wire of each of the electric wires is connected to the corresponding connection portion in a state of being parallel to each other. 7. The connector with an electric wire according to claim 6, wherein the plurality of composite electric wires are arranged in a plurality of stages with the arrangement directions of the respective electric wires being parallel to each other, and are connected to the corresponding connection portions.