JPH0142470B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an optical/electrical composite core wire with a connector.

In a conventional optical/electrical composite cable, as shown in FIG. 1, an optical fiber cable unit 2 is made up of a plurality of optical fiber cores 1, and an electric cable unit 4 is made up of a plurality of electrical core wires 3. A plurality of units are twisted around a central tensile strength member 5, and a cable sheath 7 is attached to the outer periphery of the unit through a pressing layer 6.
It had a structure covered with

When such an optical/electrical composite cable is used for relatively short-distance wiring, such as inside a device, the signal transmission system includes cables at both ends of each optical fiber core 1, as shown in Figure 2. An electrical/optical converter (hereinafter referred to as an E/O converter) 8 and an optical/optical converter (hereinafter referred to as an E/O converter) 8
Electrical converter (hereinafter referred to as O/E converter) 9
A driving power source 10 for the E/O converter 8 and O/E converter 9 is installed at either the transmitting end or the receiving end, and power is supplied to the far end side via the electric core wire 3. There's a case. This is because there is an advantage that the power supply 10 only needs to be installed in one location.

In such a structure, the same number of E/O converters 8 and O/E converters 9 as the number of optical fibers 1 are required, and the power supply system for driving these converters 8 and 9 requires a single circuit. There is a batch power supply system that supplies power to all the E/O converters 8 and O/E converters 9 of one cable together with a power supply line, and a combined power supply system that supplies power to all E/O converters 8 and O/E converters 9 in one cable, and a pair of E/O converters 8 and O/E converters. There is an individual power supply method in which power is supplied to each pair of devices 9 individually.

However, in the case of the batch power supply method, it is necessary to adjust the supply voltage or supply current due to fluctuations in the number of E/O converters 8 and O/E converters 9 to be driven, which is a disadvantage that is technically difficult. There is.

On the other hand, in the case of the individual power supply method, the above-mentioned problems are eliminated, but an individual power supply line is required.
Therefore, wiring for the optical fiber core wire and wiring for the electric core wire for power supply are required, and there is a drawback that the wiring becomes congested. Further, in this case, there is a drawback that the number of mutual connections of optical fiber core wires and the number of mutual connections of electrical core wires increases, resulting in a congestion of connection ends.

The purpose of the present invention is to solve the problem of voltage/current fluctuation,
An object of the present invention is to provide an optical/electrical composite core wire with a connector that can solve the problem of congestion in wiring and connection parts.

The optical/electrical composite core wire with a connector according to the present invention includes:
An optical/electrical composite core body consisting of a single optical fiber core arranged in the center and two electrical core cores arranged on either side or around the core, and an optical/electrical composite core body that is attached to an end of the composite core body. The connector has a connector housing attached to an end of the composite core body, and the optical fiber core of the composite core body passes through the center of the connector housing. Female or male guide conductors are supported through the connector housing in parallel to both sides of the optical fiber core, and these guide conductors are connected to both electrical cores of the composite core body. It is characterized by being electrically connected.

Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 3 shows an example of the optical/electric composite core body 11 used in this embodiment. This light
The electrical composite core body 11 has a single optical fiber core in the center (the outer periphery of the optical fiber is covered with a primary coating, or the outer periphery of the optical fiber is covered with a buffer layer, or the outer periphery of this buffer layer is A conductor (conductor itself, or a conductor covered with an insulating sheath) 1 is placed in parallel on both sides of the conductor. , these are collectively covered with an extrusion coating 12 such as plastic.

Figure 4 shows such an optical/electric composite core body 1.
1 is twisted together and pressed around the outer circumference of the layer 13.
This figure shows an example of an optical/electrical composite cable 16 in which a cable core 14 is formed by applying the following steps, and a cable sheath 15 is provided around the outer periphery of the cable core 14.

Optical/electric composite core body 11 as shown in Fig. 3
In this case, the composite core body 1 is constructed using the two-core electrical core wire 3 built into the composite core body 11.
E/O converter and O/E of optical fiber core 1 in 1
Since power is supplied to the converter, power can be supplied to each composite core body, which solves the problems of wiring congestion and voltage/current fluctuations.

Next, three specific examples of the optical/electric composite core body 11 will be explained.
Show species.

(1) An optical fiber with an outer diameter of 125μmφ is coated with silicone rubber to make the outer diameter 0.4mmφ, and then coated with nylon to make the outer diameter 0.9mm.
The outer diameter is 0.65 around the optical fiber core wire with φ.
Two electrical core wires coated with 0.25 mm thick polyethylene were twisted together on a mmφ copper wire, and the outer periphery was wrapped with a polyester tape to give an outer diameter of 2.2 mmφ.

(2) An optical fiber having an outer diameter of 125 μmφ is coated with silicone rubber to make the outer diameter 0.4 mmφ, and the outer periphery of the optical fiber is coated with glass fiber reinforced plastic to make the outer diameter 1.0 mmφ, and the outer diameter is 1.0 mmφ. Two copper wires with a diameter of 0.65mmφ are arranged in parallel, and polyethylene is extruded and coated all at once to reduce the outer diameter.
It was set to 2.7mmφ.

(3) An optical fiber with an outer diameter of 125 μmφ is coated with silicone rubber to make the outer diameter 0.4 mmφ, and the outer circumference of the optical fiber is coated with nylon to make the outer diameter 0.9 mmφ, and polyamide fibers are placed around the optical fiber core wire. Vertical support (4000 denier) with an outer diameter of 0.65mm
Two copper wires of diameter φ were arranged in parallel and polyvinyl chloride was extruded and coated all at once to give an outer diameter of 2.7 mmφ.

Note that if the optical/electrical composite core body 11 having the structure (1) described above does not have sufficient tensile strength, a tensile strength body may be inserted when the cable core is twisted together.

FIG. 5 shows an embodiment of an optical/electrical composite core wire 17 with a connector according to the present invention. This optical/electrical composite core wire 17 with a connector is comprised of an optical/electrical composite core body 11 having the structure described above, and a connector 18 attached to an end portion of this composite core body 11. The connector 18 is
It has a first connector housing 19 connected to the end of the composite core body 11 and a second connector housing 20 connected to the first connector housing 19. The optical fiber core 1 of the composite core body 11 is supported through the center of the first connector housing 19 . Optical fiber core 1
The tip of the connector housing 19 is made to coincide with the tip end surface of the first connector housing 19 . A pair of male guide conductors 21 are supported through the first connector housing 19 in parallel on both sides of the optical fiber core 1 with the optical fiber core 1 therebetween. The rear ends of these male guide conductors 21 are electrically connected to the tips of each electrical core wire 3 of the composite core body 11. Further, the tip of each male guide conductor 21 projects outward from the tip of the first connector housing 19 by a predetermined length. The second connector housing 20 is provided with an optical fiber through hole 22 corresponding to the optical fiber 1 of the first connector housing 19, and this through hole 22 is connected to the second connector housing 20. Other optical/electrical composite core wires or optical fiber core wires 23 of equipment are supported through the core. Furthermore, a pair of female guide conductors 24 are penetratingly supported in the second connector housing 20 in correspondence with each male guide conductor 21 of the first connector housing 19 and parallel to the optical fiber core through hole 23. ing. These female guide conductors 24 are provided so that a female hole 24A at the tip opens to the tip surface of the second connector housing 20.

In such a connector-attached optical/electric composite core wire 17, both male guide conductors 21 of the first connector housing 19 are inserted into the female holes 24 of the corresponding female guide conductors 24 of the second connector housing 20.
By inserting and connecting each electrical core wire 3 into the second connector housing 20, each electrical core wire (not shown) of the composite core body etc. is connected to the second connector housing 20 through the guide conductors 21 and 24. can be connected. Also, due to the guiding action of the male guide conductor 21 and the female guide conductor 24, the optical fiber core 1 on the first connector housing 19 side and the second
Optical fiber core wire 2 on the connector housing 20 side of
3 can be aligned and the butt connection can be performed correctly.

In addition, the other end side of the composite core body 11 can be made into the same structure as needed.

In addition, the male guide conductor 21 and the female guide conductor 2
4 can be attached to the first connector housing 19 and the second connector housing 20 in the opposite manner to this embodiment.

Furthermore, the present invention is not limited to the male guide conductor 21 and the female guide conductor 24 being supported by only the male type or only the female type, respectively, with respect to each connector housing 19, 20 as shown in the drawings. Instead, the male and female are supported in combination,
Of course, the connection may be made with the male and female guide conductors of both connector housings facing each other.

As explained above, in the optical/electrical composite fiber core with a connector according to the present invention, the optical/electrical composite core body has one optical fiber core in the center and two electrical fiber cores on both sides or around it. Since it has a structure in which the core wires are arranged, power can be supplied to the E/O converter or O/E converter connected to the optical fiber core within the unit using this composite core body as a unit, and therefore the cable It is possible to solve problems such as fluctuations in voltage and current due to increase/decrease in the number of loads and congestion in wiring that occur when power is supplied in units. Further, in the present invention, a connector is attached to the end of the composite core, and a pair of guide conductors supported by a connector housing of the connector serve as an electrical connection means for each electric core of the composite core body. Since it also serves as a means for aligning the optical fibers, the structure of the connector can be simplified. Furthermore, since one connector connects the optical fiber core of the composite core body and connects a pair of electrical core wires, the number of connectors can be reduced compared to a connector that connects them separately. It is possible to prevent congestion at the connection part.

[Brief explanation of drawings]

Figure 1 is a cross-sectional view of a conventional optical/electrical composite cable, Figure 2 is a system diagram showing an example of conventional bulk power supply,
FIG. 3 is a cross-sectional view showing an example of an optical/electrical composite core body used in the present invention, and FIG. 4 is a cross-sectional view showing an example of an optical/electrical composite cable using the composite core body shown in FIG. 3. FIG. 5 is a perspective view showing an example of an optical/electrical composite core wire with a connector according to the present invention. 1... Optical fiber core wire, 3... Electric core wire, 8...
...Electrical/optical converter, 9... Optical/electrical converter, 10
... Power supply, 11 ... Optical/electric composite core wire body, 12
... Covering, 18 ... Connector, 19 ... First connector housing, 20 ... Second connector housing, 21 ... Male guide conductor, 22 ... Optical fiber core through hole, 23 ... Optical fiber Core wire, 2
4...Female guide conductor, 24A...Female hole.

Claims (1)

[Claims] 1. An optical/electrical composite core body consisting of a single optical fiber core arranged in the center and two electrical core cores arranged on either side or around it, and an optical/electrical composite core body that is attached to the end of the composite core body. The connector has a connector housing attached to an end of the composite core body, and the optical fiber core of the composite core body passes through the center of the connector housing. Female or male guide conductors are supported through the connector housing in parallel to both sides of the optical fiber core, and these guide conductors are connected to both electrical cores of the composite core body. An optical/electrical composite core wire with a connector that is electrically connected.