KR20110081384A

KR20110081384A - Utp cable

Info

Publication number: KR20110081384A
Application number: KR1020100001524A
Authority: KR
Inventors: 김태우; 정보찬
Original assignee: 엘에스전선 주식회사
Priority date: 2010-01-08
Filing date: 2010-01-08
Publication date: 2011-07-14

Abstract

The present invention relates to a UTP cable, comprising: at least two twisted pairs in which at least two insulated sheathed wires are spirally twisted; A separator for separating the twisted pairs from each other; And a sheath part surrounding the stranded part and the separator, wherein the separator includes a partition wall spaced apart from the stranded part on the basis of a cross section and a first protrusion extending from one end of the partition wall to the left and right sides thereof. do.
As a result, by forming protrusions on the upper or lower portion of the separator, the separation between the stranded portions can be secured by preventing the side from being pulled to one side of the separator, and the cable manufacturing process can be easily implemented to realize stable work. At the same time, the production cost can be reduced.

Description

UTP cable {UTP CABLE}

The present invention relates to a UTP cable, and more particularly, to a UTP cable including a separator structure capable of preventing crosstalk between twisted pairs in order to improve transmission characteristics.

Generally, a UTP cable used as a communication cable is formed by twisting conductors formed by covering a conductor such as copper with an insulator in a spiral shape to form a stranded wire part, and collecting a plurality of individual stranded wire parts and recoating the wire. .

Recently, the UTP cable has been developed as an important problem due to the development of information and communication technologies such as ATM and Ethernet.

On the other hand, according to worldwide conventions, the UTP cable is classified by a category (Category or Cat.) And a number according to the signal transmission capability, the higher the number has a higher transmission characteristics.

For example, 16 MHz for Cat. 3, 20 MHz for Cat. 4, and 100 MHz for Cat. 5 can be transmitted. The higher the modulation frequency, the greater the amount of information per unit time.

However, the higher the modulation frequency, the higher the noise phenomenon due to the interference between the cable and the change in the impedance inside the wire, which makes it difficult to separate the signal from the signal receiver.

For this reason, the signal transmission limit of the UTP cable has been considered to be about 155 Mbps (Megabit per sec).

However, in view of the recent development of related technologies such as moving picture transmission technology, there is a high possibility that a cable capable of enabling a higher level of information transmission in the near future will be needed. The research and development is competitive.

However, in order to increase transmission capacity, high frequency is generally used, and when such high frequency is used, internal interference (Power Sum Near and Cross Talk (PSNEXT)) occurs inside the UTP cable, and a UTP made of a plurality of twisted pairs In the case of cables, minimizing interference has a significant impact on improving signal transmission rates.

Since the interference characteristics of the UTP cable vary depending on the insulator outer diameter, pitch, etc. of the conductive wires forming the twisted pair, it is very important to properly tune these factors within the range that can best transmit the signal.

1 (a) and (b) are cross-sectional views of a UTP cable according to the prior art.

Referring to FIG. 1, the UTP cable according to the related art spirally twists the insulated coated conductors 12 to form twisted pair portions 10a, 10b, 10c, and 10d, and each of the individual twisted pair portions 10a, 10b, and 10c. , 10d) are collected and covered with the sheath portion 30.

Here, the stranded portions 10a, 10b, 10c, and 10d are spaced apart from each other by the separator 20 disposed at the center of the UTP cable, and according to the separation, interference that may occur between the stranded portions may be reduced. .

The separator 20 according to the related art separates the twisted pair portions 10a, 10d, 10b and 10c having relatively high interference, and the twisted pair portions 10a, 10b and 10c having relatively little interference. , 10d) was adopted as a straight line to position adjacent to each other without any space.

However, since the separator 20 provided in the straight shape does not have a separate support shaft, as shown in FIG. 1 (a), when the separator 20 is inclined to one side in the cable, stranded portions to be spaced adjacent to each other are adjacent to each other. There was a problem that internal interference occurs.

In addition, when the separator 20 is inserted in the cable manufacturing process, the separator 20 may be inserted in a state in which the separator 20 is inclined to one side, and thus, there is a problem in that the cable manufacturing process may not be easily implemented.

In addition, when increasing the height of the separator 20, as shown in Fig. 1 (b) in order to prevent the separator 20 from tilting, the separation between the stranded portion is realized, but the excessively increased portion protrudes out of the sheath portion. There is a problem that the nonuniformity of the appearance of the cable, causing the reflection loss due to the structure irregularity, the attenuation loss due to the decrease in the space inside the sheath.

The present invention has been made to solve the above problems, an object of the present invention, by forming a protrusion on the upper or lower portion of the separator to prevent the separation to one side of the separator to ensure the separation between strands To provide a tipi cable.

Still another object of the present invention is to provide a UTP cable that can be easily implemented to implement a stable manufacturing process of a cable, thereby increasing production and reducing manufacturing cost.

The object is, according to the present invention, at least two twisted pairs in which at least two conductors coated with insulation are spirally twisted; A separator for separating the twisted pairs from each other; And a sheath portion surrounding the stranded portion and the separator, wherein the separator includes a barrier rib separating the stranded portion based on a cross section and a first projection portion extending from one end of the barrier rib to the left and right sides thereof. Can be achieved by

Here, the separator may be provided in a 'T' shape on the cross section.

The separator may further include a second protrusion extending from the other end of the partition wall to the left and the right of the partition wall.

Here, the separator may be provided in an 'I' shape in cross section.

On the other hand, the thickness of the partition wall may be provided in the range of 0.3 ~ 0.5 (mm).

In addition, the height of the partition wall may be provided in the range of 3.5 ~ 4.5 (mm).

Here, the width of the first protrusion and the second protrusion is provided in the range of 1.5 ~ 2.5 (mm), the thickness of the first protrusion and the second protrusion may be provided in the range of 0.3 ~ 0.5 (mm).

On the other hand, the separator may be provided with any one of polyethylene or flame retardant polyethylene or polypropylene or flame retardant polypropylene or fluororesin.

In addition, the fluororesin may be provided with any one of fluorinated ethylene propylene (FEP), monofluoroalkoxy (MFA) or molten fluorine resin (ECTFE: Ethylenc Chlor Trifluouro Ethylene).

According to the present invention, by forming a protrusion on the upper part of the separator, it is possible to prevent the pulling to one side of the separator to ensure the separation between the strands.

In addition, the cable manufacturing process can be easily implemented to implement a stable operation, thereby increasing the amount of production and at the same time can reduce the manufacturing cost.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.
1 (a), (b) is a cross-sectional view of the UTP cable according to the prior art,
2 is a cross-sectional view of the UTP cable according to the present invention,
3 is a cross-sectional view of the UTP cable according to another embodiment of the present invention.

Hereinafter, the configuration of the present invention will be described in detail with reference to the accompanying drawings.

Prior to this, terms used in the present specification and claims should not be construed in a dictionary meaning, and the inventors may properly define the concept of terms in order to explain their invention in the best way. It should be construed as meaning and concept consistent with the technical spirit of the present invention.

Therefore, the embodiments shown in the present specification and the drawings are only exemplary embodiments of the present invention, and not all of the technical ideas of the present invention are presented. Therefore, various equivalents It should be understood that water and variations may exist.

FIG. 2 is a cross-sectional view of the UTP cable according to the present invention, and FIG. 3 is a cross-sectional view of the UTP cable according to another embodiment of the present invention.

2 to 3, the UTP cable according to the present invention includes at least two stranded wire portions 10 having at least two insulated coated conductors 12 twisted in a spiral shape; A separator (20) for separating the stranded portion (10) from each other; And a sheath portion 30 surrounding the stranded portion 10 and the separator 20. The separator 20 includes a partition wall 22 and the partition wall spaced apart from each other by the cross section. And a first protrusion 24 extending from one end of the end 22 to the left and the right.

Here, the conductive wire 12 is formed to have an outer diameter r by covering the conductor with an insulator after forming the wire rod using a conductor such as copper to transmit data converted into an electrical signal.

The insulator is composed of a polymer having low dielectric constant and easy processing such as low density polyethylene (LDPE), high density polyethylene (HDPE), and fluorinated ethylene propylene (FEP).

In addition, the stranded wire part 10 is formed by twisting a plurality of the conductor wires 12 at regular intervals with a large pitch. Typically, as shown in FIGS. 2 and 3, two stranded wires 12 are twisted and formed. However, the present invention is not limited thereto, and various modifications are possible.

In addition, the twisted pair part 10 may be configured to have an outer diameter R by covering the outside of the twisted conductor 12 to further improve transmission characteristics by reducing signal interference through an increase in shielding effect.

Here, the twisted pair part 10 is included in a plurality of UTP cable, typically as shown in Figures 2 to 3, the first, second, third, fourth twisted pair in the sheath (30) ( 10a, 10b, 10c, and 10d), but is not limited thereto, and various modifications are possible.

Meanwhile, in order to suppress interference between the twisted pair portions 10a, 10b, 10c, and 10d included in the UTP cable, the large pitches of the twisted pair portions 10a, 10b, 10c, and 10d are different from each other. .

In addition, in order to minimize internal interference between the twisted pair portions 10a, 10b, 10c, and 10d according to the different large pitches, the separator 20 for separating the twisted pair portions 10a, 10b, 10c, and 10d from each other is provided. It is inserted into the sheath 30.

Here, the separator 20 may be provided with any one of polyethylene or flame retardant polyethylene or polypropylene or flame retardant polypropylene or fluororesin, and the fluororesin is fluorinated ethylene propylene (FEP) or monofluoroalkoxy (MFA) or melted. Fluorine resin (ECTFE: Ethylenc Chlor Trifluouro Ethylene) is provided with any one of the strands (10a, 10b, 10c, 10d) serves to space apart from each other.

That is, the stranded portions 10a, 10b, 10c, and 10d are spaced apart from each other by the separator 20 disposed at the center of the UTP cable, and this separation may reduce interference that may occur between the stranded portions. .

Here, the separator 20 includes a partition wall 22 spaced apart from the stranded portion 10 on the basis of a cross section and a first protrusion part 24 extending left and right from one end of the partition wall 22. can do.

That is, as shown in Figure 2, the separator 20 is formed in a 'T' shape on the cross-section of the first, second, third, fourth stranded portion (10a, 10b, 10c, 10d) is relatively a lot of interference The first and fourth twisted pairs 10a and 10d may be provided to be spaced apart from the second and third twisted pairs 10b and 10c (home).

In addition, the part where the most fragile combination, for example, the 2nd, 3rd stranded part 10b, 10c is arrange | positioned among the said 1st, 2nd, 3rd, 4th stranded part 10a, 10b, 10c, 10d is arrange | positioned. By forming the first protrusions 24 on the inside, internal interference may be minimized through the secure separation of the second and third twisted pair portions 10b and 10c.

That is, the separator 20 according to the present invention forms the first protrusion 24 at one end of the partition wall 22, thereby reducing the separation effect of the twisted pair part due to the tilting of the conventional straight separator, and the inconvenience of correct arrangement of the separator. Problems such as difficulty in manufacturing can be solved.

On the other hand, the separator 20 is opposed to the partition 22 and the first protrusion 24 formed on one end of the partition wall 22, that is, the partition wall spaced apart from the stranded portion 10 on the basis of the cross section. The other end portion 22 may further include a second protrusion 26 formed corresponding to the first protrusion 24.

That is, as shown in FIG. 3, the separator 20 is formed in an 'I' shape in cross section, and among the first, second, third, and fourth twisted pair portions 10a, 10b, 10c, and 10d, relatively much interference occurs. The first and fourth twisted pairs 10a and 10d may be provided to be spaced apart from the second and third twisted pairs 10b and 10c (home).

Moreover, in the said 1st, 2nd, 3rd and 4th stranded part 10a, 10b, 10c, 10d, the weakly adjacent combination, for example, the part in which the 2nd, 3rd stranded part 10b, 10c is arrange | positioned The first and fourth twisted pair portions 10a and 10d are formed by forming the first protrusions 24 and forming the second protrusions 26 in portions where the first and fourth twisted pair portions 10a and 10d are disposed. Internal interference may be minimized through the secure separation of the second and third twisted pair portions 10b and 10c.

That is, in the separator 20 according to the present invention, the first protrusion part 24 is formed at one end of the partition wall 22, and the second protrusion part 26 is formed at the other end of the partition wall 22. Problems such as a reduction in the separation effect of the stranded portion due to the deflection of the separator and difficulty in manufacturing due to the inconvenience of the accurate arrangement of the separator can be solved.

The thickness t1 of the partition wall 22 may be provided in a range of 0.3 to 0.5 (mm).

In this case, when the thickness t1 of the partition wall is less than 0.3 mm, the formability of the separator 20 may be lowered, thereby causing inconvenience in manufacturing, and the separation effect of the stranded part 10 may be reduced. .

In addition, when the thickness t1 of the partition wall is formed to exceed 0.5 mm, it is difficult to easily insert the separator 20 into the sheath portion 30, and the production cost due to excessive material input may be increased.

In addition, the height h1 of the partition wall 22 may be provided in the range of 3.5 to 4.5 (mm).

Here, when the height h1 of the barrier rib is formed to be less than 3.5 mm, the stranded wire to be spaced apart by the flow of the stranded wire part 10 cannot be reliably spaced apart from the stranded wire part 10 having a diameter of about 2 mm. There is a possibility that the unit 10 is adjacent to each other.

In addition, when the height h1 of the partition wall exceeds 4.5 mm, the thicknesses t2 and t3 of the first and second protrusions 24 and 26, which will be described later, are added to increase the overall height of the separator 20. A problem may arise in the process of increasing the separator 20 so that it is difficult to drive the separator 20 into the sheath portion 30.

Meanwhile, the widths l1 and l2 of the first and second protrusions 24 and 26 are provided in a range of 1.5 to 2.5 (mm), and the first and second protrusions 24 and 26 are provided. The thickness (t2, t3) of may be provided in the range of 0.3 ~ 0.5 (mm).

In this case, when the widths l1 and l2 of the first and second protrusions 24 and 26 are formed to be less than 1.5 mm, it is difficult to reliably separate the twisted pairs of the weak combination, and the first and second protrusions 24 and When the widths l1 and l2 of 26 are formed to exceed 2.5 mm, it is difficult to drive the separator 20 into the sheath portion 30.

In addition, when the thicknesses t2 and t3 of the first protrusions 24 and the second protrusions 26 are less than 0.3 mm, as in the thickness t1 of the partition wall 22, moldability deteriorates. In addition to the inconvenience in manufacturing, the separation effect of the stranded portion 10 may be reduced.

In addition, when the thicknesses t2 and t3 of the first and second protrusions 24 and 26 are greater than 0.5 mm, it is difficult to easily insert the separator 20 into the sheath 30. In addition, the production costs associated with excessive material input can be increased.

On the other hand, the UTP cable according to the present invention includes a sheath portion 30 is configured to surround the entire twisted pair (10a, 10b, 10c, 10d) and the separator 20 and form an appearance as described above.

Here, the sheath portion 30 not only mechanically protects the stranded portions 10a, 10b, 10c, and 10d, but also prevents alien crosstalk caused by electromagnetic waves generated from other adjacent cables or other electronic equipment. Provide a role to block.

In general, the sheath portion 30 is formed of an insulating material such as polyethylene, PVC, or an olefin (Olefin) -based polymer material, the thickness is preferably configured to have a value in the range of 0.3 ~ 1.5mm.

Because, when the thickness of the sheath portion 30 is less than 0.3mm, it does not effectively protect the conductor 10 from the external interference, if it exceeds 1.5mm, the thickness of the cable is thickened to increase the weight and flexibility Because it falls.

Preferably, in order to further increase the blocking effect of external interference, an electromagnetic shielding sheath made of a conductive material may be further included in the sheath portion 30.

As described above, the UTP cable according to the present invention, by forming a protrusion on the upper or lower portion of the separator to prevent the side to the side of the separator can be secured, the separation between the twisted pair can be secured, the cable manufacturing process is easy It is possible to implement stable work, which can increase production and reduce manufacturing costs.

As mentioned above, although the present invention has been described by way of limited embodiments and drawings, the technical idea of the present invention is not limited thereto, and a person having ordinary skill in the art to which the present invention pertains, Various modifications and variations may be made without departing from the scope of the appended claims.

* Description of the symbols for the main parts of the drawings *
10: stranded portion 10a: first stranded portion
10b: second twisted pair 10c: third twisted pair
10d: 4th twisted pair 12: conducting wire
20 separator 22 partition wall
24: first projection 26: second projection
30: sheath portion r: diameter of lead wire
R: Diameter of stranded wire h1: Height of bulkhead
t1: thickness of partition wall l1: width of first protrusion
t2: thickness of the first protrusion l2: width of the second protrusion
t3: thickness of the second protrusion

Claims

At least two twisted pairs in which at least two insulation-coated wires are spirally twisted;
A separator for separating the twisted pairs from each other;
And a sheath part surrounding the stranded part and the separator.
The separator includes a barrier rib that separates the twisted pair portion based on a cross section and a first protrusion extending from left and right sides of one end of the barrier rib.

The method of claim 1,
The separator is UTP cable, characterized in that provided in the 'T' shape on the cross-section.

The method of claim 1,
The separator UTP cable, characterized in that it further comprises a second protrusion extending from the other end of the partition wall to the left and right, based on the cross section.

The method of claim 3, wherein
The separator is UTP cable, characterized in that provided in the 'I' shape on the cross-section.

The method of claim 1,
UTP cable, characterized in that the thickness of the partition is provided in the range of 0.3 ~ 0.5 (mm).

The method of claim 1,
UTP cable, characterized in that the height of the partition is provided in the range of 3.5 ~ 4.5 (mm).

The method of claim 3, wherein
The width of the first protrusion and the second protrusion is provided in the range of 1.5 ~ 2.5 (mm), the thickness of the first protrusion and the second protrusion is provided in the range of 0.3 ~ 0.5 (mm) Tipi cable.

The method of claim 1,
The separator is a UTP cable, characterized in that provided in any one of polyethylene or flame retardant polyethylene or polypropylene or flame retardant polypropylene or fluororesin.

The method of claim 8,
The fluorine resin is UTP cable, characterized in that any one of fluorinated ethylene propylene (FEP) or monofluoroalkoxy (MFA) or molten fluorine resin (ECTFE: Ethylenc Chlor Trifluouro Ethylene).