KR102534067B1 - Flat Optical And Power Composite Cable - Google Patents

Abstract

The present invention relates to a flat optoelectronic composite cable capable of transmitting and receiving large amounts of data and transmitting power and having a slim and minimized cross-sectional area.

Description

Flat Optical And Power Composite Cable {Flat Optical And Power Composite Cable}

The present invention relates to a flat optoelectric composite cable. More specifically, the present invention relates to a flat optoelectric composite cable capable of transmitting/receiving large amounts of data and transmitting power and having a slim and minimized cross-sectional area.

3D display, which has recently been attracting attention as a next-generation display, content development in related fields, and video home appliances that require large-capacity signal bandwidth to implement ultra-high-definition images, such as smart TV and ultra-high-definition TV, are actively being developed and commercialized. In particular, various home appliance companies are making efforts to develop and commercialize TVs capable of realizing ultra-high definition resolution, starting with UHD (Ultra High Definition) broadcasting. In addition, along with such image quality issues, consumers' demand for interior functions in the home is making the screen larger and ultra-slim.

However, in the case of using a conventional copper cable for video home appliances capable of realizing the above-described ultra-high-definition video, there is a physical limitation in high-speed transmission for transmitting and receiving large amounts of data. In particular, in the case of a conventional copper cable, additional technologies and components such as individual shielding for each element are required to eliminate radio interference between adjacent signal lines.

In addition, as the transmission speed of the cable increases, the length of the cable used becomes shorter and the thickness of the cable increases. In this case, it is possible to satisfy the consumer's demand for the functional part according to the increase in transmission speed, but it is insufficient to satisfy the demand for the emotional part due to the increase in the thickness of the cable.

In order to solve this problem, there is a recent trend in which optical technology is applied to video home appliances. Specifically, in the case of using an optical cable, there is no interference between the cable wires, the signal bandwidth is wide, and large-capacity data transmission and reception is possible, and the cable can be narrowed, so that the emotional quality can be satisfied. However, since the optical cable cannot transmit power, an additional power cable is required when connecting video home appliances and other devices such as a set top box.

However, since it is very cumbersome and inconvenient to separately use an optical cable and a power cable in the case of using video home appliances and other devices, an optical fiber composite cable in which an optical cable and a copper power cable are combined in one cable has begun to be used. However, the conventional opto-electronic composite cable is useful in terms of functionality of simultaneously transmitting an optical signal and power, but the size of the entire cable, that is, the cross-sectional area, is greatly increased due to the addition of a power cable. In this case, video home appliances evolve into ultra-slim forms, but cables belonging to the accessory product group do not respond to the changing needs of users.

An object of the present invention is to provide a flat optoelectric composite cable capable of transmitting/receiving large amounts of data and transmitting power and having a slim and minimized cross-sectional area.

In order to solve the above problems, the present invention provides a flat optoelectric composite cable for data transmission and reception and power supply, comprising: an optical unit for data transmission and reception; one or more power units for power supply; and a sheath layer surrounding the outside of the optical unit and the power unit, wherein the flat photoelectric composite cable has a width greater than a thickness.

Also, the optical unit and the power unit may be disposed on a center line in the thickness direction of the cable.

Here, the optical unit may be an optical fiber ribbon that is disposed at the center of the cable in the width and thickness directions and has a greater width than a thickness.

In this case, at least one of the one or more power units may have a greater width than a thickness.

Also, the power unit may be disposed on both sides of the optical unit.

In this case, the power unit may include a single thin wire rod.

In addition, the power unit may be configured by stacking a plurality of wire rods.

Here, the power unit may be configured by stacking a plurality of thin wire rods in the width direction or thickness direction of the flat photoelectric composite cable.

In this case, the power unit may be insulated.

In addition, the plurality of or plurality of pairs of power units may include a ring-shaped power unit at an edge of the cable in the width direction.

In addition, in order to solve the above problems, the present invention is an optical fiber ribbon for data transmission and reception; at least one power unit having a rectangular cross-sectional shape for power supply; and a sheath layer surrounding the outside of the optical unit and the power unit, and a flat photovoltaic composite cable characterized in that the width is greater than the thickness.

Here, the optical fiber ribbon is composed of a single layer, and may be disposed at the center of the cable such that the layer direction of the optical fiber ribbon and the width direction of the cable coincide.

In this case, the optical fiber ribbon is composed of multiple layers, and may be disposed at the center of the cable such that the layer direction of the optical fiber ribbon and the width direction of the cable coincide.

In addition, at least one pair of power units may be provided, and the long side direction of the rectangular power unit may be disposed with the light unit interposed therebetween so that the direction of the long side and the width direction of the cable coincide.

In this case, the light unit and the power unit may be disposed on the center line of the cable in the thickness direction.

According to the flat opto-electronic composite cable according to the present invention, large-capacity data transmission and reception and power transmission are possible, while being slim and having a minimized cross-sectional area.

1 is a cross-sectional view showing the configuration of a flat optoelectric composite cable according to an embodiment of the present invention;
2 to 9 are cross-sectional views showing the configuration of a flat optoelectric composite cable according to various embodiments of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosed content will be thorough and complete, and the spirit of the invention will be sufficiently conveyed to those skilled in the art. Like reference numbers indicate like elements throughout the specification.

1 is a cross-sectional view showing the configuration of a flat optoelectric composite cable 10 according to an embodiment of the present invention.

Referring to FIG. 1 , the flat optoelectric composite cable 10 includes an optical unit 12 for transmitting and receiving data, a plurality of or multiple pairs of power units 20A, 20B, 26A, and 26B for power supply, and the optical unit. (12) and a sheath layer 30 surrounding the outside of the power units 20A, 20B, 26A, and 26B.

The sheath layer 30 forms the outer appearance of the optoelectric composite cable 10 . At this time, the sheath layer 30 may be composed of, for example, polybutylene terephthalate (PBT), polypropylene, polyethylene, or polyvinyl chloride. In addition, although not shown in the drawings, a tension member such as, for example, aramid yarn may be included in the sheath layer 30 . These tension members have excellent tensile strength and are flexible, so that cables can be stably installed and internal components can be protected from external shocks.

Meanwhile, the light unit 12 and the power units 20A, 20B, 26A, and 26B may be provided inside the sheath layer 30 .

In the present invention, the optical unit 12 may be composed of an 'optical fiber ribbon'. The optical fiber ribbon may be formed by coating a plurality of optical fibers 14 that are ribbonized, that is, arranged in a line, with a UV curable resin 16 or the like.

In this case, when viewed as a whole, the light unit 12 may have a 'flat' shape that is wider than its thickness.

Here, the optical fiber constituting the optical unit 12 has a double cylindrical structure in which a portion called a core in the center is surrounded by a portion called a cladding at the periphery, where the core is By using a glass optical fiber made of silica with a high refractive index, and using glass or synthetic resin made of silica with a lower refractive index than the core for the cladding, the light passing through the center causes total reflection to generate a signal is implemented to play a role in transmitting

At this time, an optical fiber having a core diameter of several μm is referred to as a single-mode optical fiber, and an optical fiber having a core diameter of several tens of μm is referred to as a multi-mode optical fiber, and is classified into a stepped optical fiber and a hill-shaped optical fiber according to the refractive index distribution of the core. The outer diameter of the optical fiber may be, for example, 200 to 250 μm.

The number of optical fibers included in one optical fiber ribbon may vary depending on data transmission/reception efficiency that can be transmitted per unit time of the optical cable, flexibility of the cable, etc., and may be, for example, 4 to 24, 12 or 24. The width and height of the optical fiber ribbon and the outer diameter of the optical fiber may be different according to the number of the optical fibers. For example, the width of the optical fiber ribbon may be 1.0 millimeter (mm) to 6.2 millimeter (mm).

In addition, from the point of view of high density of optical cables, the smaller the height and width of the optical fiber ribbon, the more advantageous it is. However, when designing the optical fiber ribbon, since the mechanical properties of the optical fiber and the problem of handling during connection must also be considered, an appropriate size of the optical fiber ribbon must be determined.

In addition, although the optical unit shown in FIG. 1 shows an example in which the optical fiber ribbon is composed of a single layer, the optical fiber ribbon may be configured by stacking multiple layers. The width of the optical fiber ribbon may be different according to the number of layers of the optical fiber ribbon, and for example, the width of the optical fiber ribbon may be 1.0 millimeter (mm) to 3.2 millimeter (mm).

Meanwhile, the optical unit 12 is disposed at the center of the cable in the width and thickness directions, and a plurality of power units 20A, 20B, 26A, and 26B may be provided on both sides of the optical unit 12 as a center. .

In the flat optoelectric composite cable 10 according to the present invention, the optical unit 12 composed of the optical fiber ribbon is composed of a single layer, and is disposed at the center of the cable so that the layer direction of the optical fiber ribbon and the width direction of the cable coincide. The slimming of the cable can be achieved.

At this time, since the optical fiber included in the optical unit 12 has weak mechanical properties, it may be damaged or disconnected when an external force or the like is applied. Therefore, in order to protect the optical fiber, the optical unit 12 is disposed at the center of the sheath layer 30 in the width and thickness directions.

Meanwhile, in the drawing, the plurality of power units 20A and 26A located on the left side of the light unit 12 may be divided into a first power unit 20A and a second power unit 26A.

As shown in the drawing, the first power unit 20A may be composed of a plurality of individual power units, for example, five individual power units. In this case, the first power unit 20A may have a flat shape having a wider width than a thickness when viewed as a whole, in which individual power units are connected to each other.

Each of the power units may be composed of a conductor 22 and an insulating layer 24 surrounding the outside of the conductor 22 . Since configurations of other power units are similar, repetitive descriptions are omitted.

Here, the first power unit (20A) supplies high current, for example, high current power of 15A or more, and is composed of a plurality of small-diameter cables to prevent the cable thickness from increasing, and the second power unit (26A) is low current , for example, may be configured to supply low current power of approximately 3A.

In this case, the flat optoelectric composite cable 10 may be configured in a flat shape having a wider width W ₁ than a thickness T ₁ . In this case, the ratio of the width W ₁ to the thickness T ₁ corresponds to approximately 1:10 to 1:15.

Meanwhile, as shown in FIG. 1 , the center line A of the flat photovoltaic cable 10 in the thickness direction may be disposed to pass through the light unit 12 and the power units 20 and 26 . That is, when the optical unit 12 and the power units 20 and 26 are disposed on the flat photoelectric composite cable 10, they are located in the width direction and at the center of the thickness direction of the flat photoelectric composite cable 10 in the thickness direction. are placed When looking at the shape of the flat photovoltaic cable 10, the thickness is smaller than the width, so the light unit 12 and the power units 20 and 26 are disposed at the center in the width direction and thickness direction of the cable to This is to prevent damage or breakage due to external force or the like.

2 shows a flat optoelectric composite cable 100 according to another embodiment of the present invention.

Referring to FIG. 2 , the flat optoelectric composite cable 100 is different from the above-described embodiment in that it includes power units 120A and 120B including a conductor made of a single thin wire.

In this case, as shown in FIG. 2 , the power units 120A and 120B may have a rectangular shape with a greater width than height. That is, at least one pair of the power units 120A and 120B is provided, and the optical unit 110 is interposed so that the direction of the long side of the rectangular power unit 120A, 120B and the width direction of the entire cable coincide. can be placed. According to this method, the optical fiber ribbon and the power unit are disposed on the center line in the thickness direction of the cable, so that the entire cable can be made slimmer.

Here, the thin wire rod is a wire rod of a rectangular model, and compared to a circular copper wire rod, the space efficiency can be increased by increasing the conductor space rate. Such a thin wire rod can be manufactured by molding an annular wire rod into a square rod through a compression process.

Meanwhile, in the flat optoelectric composite cable 100 according to the present embodiment, the ratio of the width (W ₂ ) to the thickness (T ₂ ) of the cable may be approximately 1:5 to 1:10. Accordingly, the overall cross-sectional area of the flat optoelectric composite cable 100 can be reduced by reducing the ratio of the width W ₂ to the thickness T ₂ of the cable compared to the embodiment of FIG. 1 described above.

The reason why the ratio of the width (W ₂ ) to the thickness (T ₂ ) of the cable can be reduced in this way is that the power units (120A, 120B) including a conductor made of a single thin wire are applied. That is, in the flat photoelectric composite cable 10 described in FIG. 1, the power unit is configured by applying a 'thin wire' having an area equal to or greater than the total area of the conductor 22 included in the first power unit 20A. In this case, the deterioration characteristics in terms of allowable current maintain a similar level or higher performance compared to the prior art, and the total cross-sectional area of the cable can be reduced by about 40%.

Since the optical unit 112 and the sheath layer 130, which are not described in FIG. 2, are similar to those of the above-described embodiment, repetitive descriptions are omitted.

On the other hand, in an environment in which the above-described flat optoelectric composite cable 100 is laid once, the bending characteristics are not very important. However, when the flat photoelectric composite cable 100 is moved and reinstalled or the flat photoelectric composite cable 100 is operated by connecting it to a portable device that is frequently moved, the flat photoelectric composite cable 100 is suitably used. Since it is necessary to store or move by winding it, the bending properties and restoration properties after bending become very important.

By the way, although the above-described flat optoelectric composite cable 100 can reduce the cross-sectional area by 40% or more compared to the conventional cable, the bending characteristics of the cable may be deteriorated by using a single thin wire rod. Hereinafter, an embodiment capable of improving the bending characteristics of the flat optoelectric composite cable will be described.

3 shows a flat optoelectric composite cable 200 according to another embodiment.

Referring to FIG. 3 , the flat optoelectric composite cable 200 may include a light unit 112 and power units 220A and 220B inside a sheath layer 230 . At this time, the power units 220A and 220B may be formed by stacking a plurality of wire rods 222 . Although the wire rod 222 is shown in a circular shape, it may be configured in a polygonal shape. Bending characteristics such as flexibility may be improved by configuring the power unit with single wires instead of a single conductor.

Each wire rod may be insulated coated, or a power unit in which the strand wire rods are aggregated may be insulated coated together.

That is, as shown in the drawing, a plurality of filament wires 222 may be stacked in a rectangular shape having a width greater than the thickness thereof, and the plurality of filament wires 220 may be compressed in a rectangular frame or through a tape 224. They can be kept close to each other by binding or the like.

In this case, the total cross-sectional area of the plurality of single wire rods 222 may be greater than the total cross-sectional area of the single narrow wire rod of FIG. 2 .

In this case, compared to the embodiment of FIG. 2 , in the flat optoelectric composite cable 200 according to the present embodiment, since the power units 220A and 220B are composed of a plurality of single wires 222, the bending characteristics of the cable are improved. can

4 shows a flat optoelectric composite cable 300 according to another embodiment.

Referring to FIG. 4 , a light unit 112 and power units 320A and 320B may be provided inside the sheath layer 330 . At this time, the power units 320A and 320B may be formed by stacking the thin wires 322 in the width direction of the cable.

That is, the thin wires 322 may have a long elongated shape when viewed in cross-sectional area, and the power units 320A and 320B are formed by stacking these thin wires 322 in the width direction of the cable.

In this case, the entire cross-sectional area of the plurality of thin wire rods 322 may be configured to be greater than or equal to the entire cross-sectional area of the single thin wire rod of FIG. 2 .

Compared to the embodiment of FIG. 2 , the flat optoelectric composite cable 300 according to the present embodiment is configured by stacking a plurality of thin wire rods 322 in the width direction of the cable in the power units 320A and 320B, so the cable bends. characteristics can be improved.

Meanwhile, FIG. 5 shows a flat optoelectric composite cable 400 according to another embodiment.

Referring to FIG. 5 , the power units 420A and 420B provided inside the sheath layer 430 may be formed by stacking thin wires 422 in the thickness direction of the cable.

That is, the thin wires 422 may have a long elongated shape when viewed in cross-sectional area, and the power units 420A and 420B are formed by stacking these thin wires 422 in the thickness direction of the cable.

In this case, the entire cross-sectional area of the plurality of thin wire rods 422 may be configured to be greater than or equal to the entire cross-sectional area of the single thin wire rod of FIG. 2 .

Compared to the embodiment of FIG. 2, the flat optoelectric composite cable 400 according to this embodiment is configured by stacking a plurality of thin wire rods 422 in the thickness direction of the cable in the power units 420A and 420B, so the cable bends. characteristics can be improved.

As a result, looking at the flat photovoltaic composite cables 300 and 400 of FIGS. 4 and 5, each of the power units 320A, 320B, 420A, and 420B extends the rectangular wires 322 and 422 in the width direction or thickness direction of the cable, respectively. It is configured by laminating, and thus the bending characteristics of the cable are improved.

Meanwhile, when the flat optoelectric composite cable according to FIGS. 2 to 5 is wired to a connector or the like, a short circuit may occur. In order to prevent such a short circuit, an insulating coating layer (not shown) may be further provided outside the power unit.

At this time, the insulating coating layer may be formed by an insulating extrusion method, an enamel film coating method, or an insulating compression method.

Meanwhile, FIGS. 6 to 9 show flat optoelectric composite cables 100', 200', 300', and 400' according to another embodiment.

Specifically, the flat optoelectric composite cables 100', 200', 300', and 400' according to FIGS. 6 to 9 are flat optoelectric composite cables 100, 200, 300, and 400 according to FIGS. 2 to 5, respectively. A case in which ring-shaped power units 126A, 126B, 226A, 226B, 326A, 326B, 426A, and 426B are further provided is shown.

6 to 9, an optical unit 112 and a power unit inside the sheath layers 130, 230, 330, and 430 in each of the flat photovoltaic composite cables 100', 200', 300', and 400' (120a, 120b, 220a, 220b, 320a, 320b, 420a, 420b) and the power unit 120a, 120b, 220a, 220b, 320a, 320b, 420A, 420b) , 226A, 226B, 326A, 326B, 426A, 426B).

In this case, the ring-shaped power unit (126A, 126B, 226A, 226B, 326A, 326B, 426A, 426B) is the wire rod (132, 232, 332, 432) and the wire rod (132, 232, 332, 432) An insulating layer (134, 234, 334, 434) provided on the outside may be provided .

In the flat photovoltaic composite cables 100', 200', 300', and 400' according to FIGS. 6 to 9, the power units 120A, 120B, 220A, 220B, 320A, 320B, 420A, and 420B have high current voltages. Is configured to transmit, the ring-shaped power unit (126A, 126B, 226A, 226B, 326A, 326B, 426A, 426B) may be configured to transmit a voltage of low current.

Although this specification has been described with reference to preferred embodiments of the present invention, those skilled in the art can variously modify and change the present invention within the scope not departing from the spirit and scope of the present invention described in the claims described below. will be able to carry out Therefore, if the modified implementation basically includes the elements of the claims of the present invention, all of them should be considered to be included in the technical scope of the present invention.

112: optical unit
120, 220, 320, 420: power unit
130, 230, 330, 430: cis layer

Claims (15)

In a flat optoelectric composite cable for data transmission and reception and power supply,
an optical unit for transmitting and receiving data;
a pair of power units disposed on both sides of the optical unit, having a rectangular cross-section by stacking a plurality of thin wire rods having a width greater than a thickness in the width direction of the flat photovoltaic composite cable, and supplying power; and
A sheath layer surrounding the outside of the optical unit and the power unit;
The flat optoelectric composite cable has a width greater than a thickness,
A flat optoelectric composite cable, characterized in that a pair of annular power units including a wire rod and an insulating layer surrounding the rod wire are provided outside the power unit of each rectangular shape. According to claim 1,
The optical unit and the power unit are flat photovoltaic composite cables, characterized in that disposed on the center line in the thickness direction of the cable. According to claim 1,
The optical unit is a flat opto-electronic composite cable, characterized in that the optical fiber ribbon is disposed at the center of the cable in the width direction and thickness direction and has a width greater than a thickness. delete delete delete delete delete delete delete fiber optic ribbons for data transmission and reception;
a pair of power units disposed on both sides of the optical unit and having a rectangular cross-sectional shape for power supply; and
A sheath layer surrounding the optical fiber ribbon and the outside of the power unit;
The power unit is configured by stacking a plurality of thin wires having a width greater than a thickness in the width direction of a flat photoelectric composite cable,
A flat photovoltaic composite cable, characterized in that a pair of annular power units including a wire rod and an insulating layer surrounding the rod wire are provided outside the power unit of each rectangular shape, and the width is greater than the thickness. According to claim 11,
The optical fiber ribbon is composed of a single layer, and is disposed in the center of the cable so that the layer direction of the optical fiber ribbon and the width direction of the cable coincide. According to claim 11,
The optical fiber ribbon is composed of multiple layers, and is disposed in the center of the cable so that the layer direction of the optical fiber ribbon and the width direction of the cable coincide. delete According to claim 12,
The optical fiber ribbon and the power unit are flat optoelectric composite cables, characterized in that disposed on the center line of the thickness direction of the cable.

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