KR101174663B1

KR101174663B1 - Utp cable with separator for improved alien crosstalk characteristic

Info

Publication number: KR101174663B1
Application number: KR1020100094257A
Authority: KR
Inventors: 김태우; 백종섭
Original assignee: 엘에스전선 주식회사
Priority date: 2010-01-08
Filing date: 2010-09-29
Publication date: 2012-08-21
Also published as: KR20110081748A; KR20110081747A; KR101174661B1

Abstract

The UTP cable according to the present invention includes a separator including two or more stranded wire portions formed such that at least two conductively coated insulation wires are spirally twisted to have a large pitch, and a partition wall spaced apart from each other, and the stranded wire portion and And a sheath portion surrounding the separator, and a spacer for separating the stranded portion from the sheath portion, wherein the partition wall of the separator is formed to meet the spacer at an acute angle θ.
According to the present invention, by specially manufacturing the shape of the separator that separates each stranded portion and adjusting the arrangement of each stranded portion, external interference can be more effectively overcome.
In addition, the longest twisted pair is located in the center of the cable as the longest twisted part is secured to maximize the separation distance with the twisted pair having the same long pitch in the adjacent cable, thereby minimizing the effects of external interference. By adjusting the arrangement of the stranded wires located inside the sheath, the external interference can be effectively overcome without increasing the outer diameter of the cable.

Description

UTIP CABLE WITH SEPARATOR FOR IMPROVED ALIEN CROSSTALK CHARACTERISTIC}

The present invention relates to a UTP cable, and more particularly, a UTP including a separator structure capable of preventing crosstalk between twisted pairs and effectively coping with external interference caused by other cables in order to improve transmission characteristics. It's about cables.

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 the high frequency is used, interference occurs inside and outside the UTP cable, and in the case of a UTP cable having a plurality of twisted pairs, Minimizing 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 is a cross-sectional view of a UTP cable according to the prior art.

Referring to FIG. 1, a UTP cable according to the related art includes a plurality of twisted pairs 2 and a plurality of twisted pairs formed with two insulation coated conductors 1 spirally twisted to have a large pitch. The separator 3 includes a separator 3 provided in a '+' shape and a sheath portion 4 surrounding the stranded portion 2 and the separator 3.

Here, the UTP cable according to the related art has a structure in which a spacer 5 for separating the stranded part 2 and the sheath part 4 by a predetermined distance is integrated with the sheath part 4. The spacer 5 is formed to protrude to the inside of the sheath 4 for the separation between the 2 and the sheath 4.

Here, the UTP cable according to the related art is relatively effective in terms of the separation between the sheath portion 4 and the stranded portion 2, but has the following problems.

First, since the UTP cable is manufactured with different structural conditions (conductor diameter, insulation outer diameter, large edge pitch, etc.) of each stranded portion 2, there are differences in electrical characteristics of each stranded portion 2, in this case, In the twisted pair part 2 with the longest pitch, the largest external interference effect can be measured.

However, in the UTP cable according to the related art, since the arrangement structure of the twisted pair portions 2 is structurally spaced apart by the separator 3 and the spacer 5, the difference in the large pitch of the twisted pair portions 2 is different. There is a problem that the effects of extraterrestrial interference are not considered.

In other words, the distance between the center of the UTP cable and the center of each twisted pair part 2 is set to be the same, so that the effect of interference reduction according to the separation distance irrespective of the effect of the external interference of each twisted pair part 2 having different electrical characteristics. You can expect only.

In addition, the UTP cable according to the related art has a problem that the outer diameter of the cable itself should be increased in order to minimize the external interference by reducing the external interference only by the size and the distance of the spacer 5.

In addition, there is a problem in that unnecessary distance is generated even in a twisted pair (relatively short twisted pair) having relatively favorable external interference, thereby maximizing the efficiency of the UTP cable manufacturing.

The present invention has been made to solve the above problems, and an object of the present invention, by specially manufacturing the shape of the separator to separate each twisted pair, by adjusting the arrangement of each twisted pair, it is possible to more effectively overcome the external interference. It is to provide a UT cable.

It is still another object of the present invention to provide a UTP cable capable of maximally securing a distance between twisted pairs having the same extended pitch in adjacent cables by allowing the longer twisted pair to be positioned at the center of the cable. have.

Still another object of the present invention is to provide a UTP cable having a structure that can effectively overcome the external interference without increasing the outer diameter of the cable by adjusting the arrangement of the twisted pair located inside the sheath portion.

The UTP cable according to the present invention for achieving the above object, a separator comprising at least two stranded wire portion formed so that the at least two conductors of the insulation coating is twisted in a spiral to have a large pitch, and the partition wall spaced apart from each other. And a sheath portion surrounding the stranded portion and the separator, and a spacer spaced apart from the stranded portion and the sheath portion, wherein the partition wall of the separator is formed to meet the spacer at an acute angle θ.

The separator may include an auxiliary partition wall protruding from the center of the partition wall, and the partition wall and the auxiliary partition wall may be formed to be inclined with each other.

In addition, the spacer may include a support facing the stranded portion and a rib for separating the support from the sheath.

Preferably, the support portion includes two support portions coupled to both ends of the partition wall, and the plurality of rib portions are connected to the two support portions, respectively.

Preferably, ribs having different heights or thicknesses are formed at two support portions coupled to both ends of the partition wall.

On the other hand, the UTP cable according to another embodiment of the present invention, at least two conductors of the insulation coated twisted spirally formed two or more twisted pairs formed to have a large pitch and a partition wall spaced apart from each other A separator, a sheath portion surrounding the stranded portion and the separator, and a spacer for separating the stranded portion from the sheath portion, wherein the spacer is connected to the first support portion and the first support portion formed to meet the partition wall in an inclined manner. And a second support portion, wherein the second support portion is formed to be inclined with the first support portion.

In addition, the first support portion and the second support portion may include a rib portion for separating the support portion and the sheath portion.

Preferably, two first support parts are formed at both ends of the partition wall, and ribs having different heights or thicknesses are coupled to the first support parts formed at both ends of the partition wall.

Advantageously, a third support portion coupled to the second support portion inclinedly meets the second support portion.

On the other hand, the UTP cable according to another embodiment of the present invention, at least two conductors of the insulation coated twisted spirally formed two or more twisted pairs formed to have a large pitch and a partition wall spaced apart from each other A separator, a sheath portion surrounding the stranded portion and the separator, and a spacer spaced apart from the stranded portion and the sheath portion, wherein the spacer is disposed between the support portion facing the stranded portion and the support portion and the sheath portion. And a rib portion disposed between the sheath portion and the stranded portion having the longest major pitch among the stranded portions.

Preferably, the separator includes an auxiliary partition wall protruding from a central portion of the partition wall, and the partition wall and the auxiliary partition wall are formed to be inclined with each other.

In addition, two support portions are formed at both ends of the partition wall, and rib portions having different heights or thicknesses are coupled to the support portions formed at both ends of the partition wall.

Preferably, the support is formed in the form of a line bent at an angle on the cross section.

On the other hand, the UTP cable according to another embodiment of the present invention, at least two conductors of the insulation coated twisted spirally formed two or more twisted pairs formed to have a large pitch and a partition wall spaced apart from each other A separator, a sheath portion surrounding the stranded portion and the separator, and a spacer spaced apart from the stranded portion and the sheath portion, wherein the spacer comprises: a first spacer formed at one end of the partition wall so as to be inclined with the partition wall; And a second spacer formed at the other end of the partition wall to be inclined to meet the partition wall, wherein a stranded wire part having the longest major pitch among the stranded wire parts is disposed at a portion where the first spacer and the partition wall meet at an acute angle. The twisted pair portion having the second longest pitch among the portions has the second spacer and the partition wall. It is arranged at the part where it meets at an acute angle.

In addition, each of the first and second spacers may include a support part facing the stranded part and a rib part for separating the support part from the sheath part.

Preferably, the ribs included in the first space and the second spacer are configured to have different heights or thicknesses.

According to the present invention, by specially manufacturing the shape of the separator that separates each stranded portion and adjusting the arrangement of each stranded portion, external interference can be more effectively overcome.

In addition, the longest twisted pair is located in the center of the cable as the longest twisted pair is secured to the maximum separation distance with the twisted pair having the same long pitch in the adjacent cable, thereby minimizing the effects of external interference.

In addition, by adjusting the arrangement of the twisted pairs located inside the sheath portion, the external interference can be effectively overcome without increasing the outer diameter of the cable.

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 is a cross-sectional view of a UTP cable according to the prior art,
2 is a schematic diagram showing a large pitch of twisted pair portions provided by twisting a conductive wire;
3 is a cross-sectional view of the UTP cable according to the present invention.

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

Prior to this, the terms used in the specification and claims should not be construed in a dictionary sense, and the inventor may, on the principle that the concept of a term can be properly defined in order to explain its invention in the best way And should be construed in light of the meanings and concepts consistent with the technical idea 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 schematic view showing a large pitch p of a twisted pair portion provided by twisting a conductive wire, and FIG. 3 is a cross-sectional view of the UTP cable according to the present invention.

2 to 3, the UTP cable according to the present invention may include at least two stranded wires 10 formed such that at least two insulation coated wires 12 are spirally twisted to have a large pitch p. And a separator 20 including partition walls 22 that separate the stranded portions 10 from each other, a sheath portion 30 surrounding the stranded portions 10 and the separator 20, and the stranded portions 10. And a spacer 25 for separating the sheath portion 30, and the partition wall 22 of the separator 20 is formed to meet the spacer 25 at an acute angle θ.

Here, the conductor 12 is formed by forming a wire rod using a conductor such as copper to transmit data converted into an electrical signal, and then covering the conductor with an insulator.

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 the conductive wires 12 in a plurality of large pitches p at regular intervals. Typically, as shown in FIG. 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 stranded portion 10 is configured to cover the outside of the twisted conductor 12 to further improve the transmission characteristics by reducing the signal interference through the increase of the shielding effect.

Here, the twisted pair 10 may be included in a plurality of UTP cables, and as shown in FIG. 3, the first, second, third, and fourth twisted pairs 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 p of the twisted pair portions 10a, 10b, 10c, and 10d are different from each other. Is formed.

In addition, hereinafter, for the sake of clarity, the length of the large pitch p of the first, second, third, and fourth twisted pair portions 10a, 10b, 10c, and 10d is equal to the length of the first stranded portion 10a> the second stranded portion. It is assumed that it is set in the order (10b)> third twisted pair 10c> fourth twisted pair 10d.

Here, in order to minimize the internal interference between the twisted pairs 10a, 10b, 10c, and 10d according to the different large pitch p, a separator for separating the twisted pairs 10a, 10b, 10c, and 10d from each other ( 20 is inserted into the sheath portion 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, as shown in FIG. 3, the partition wall 22 and the stranded portion (10a, 10b, 10c, 10d) for separating the stranded portion (10a, 10b, 10c, 10d) from each other and It comprises a spacer 25 for separating the sheath portion 30.

The separator 20 is a component in which the partition wall 22 and the spacer 25 are integrally formed, and the partition wall 22 is formed at a predetermined angle θ on the cross section of the spacer 25 as shown in FIG. 3. It is formed to meet.

That is, by arranging the partition wall 22 at an acute angle, not perpendicular to the spacer 20, each of the stranded lines has an arrangement of the first, second, third, and fourth stranded portions 10a, 10b, 10c, and 10d. It can be adjusted differently according to the large pitch (p).

In addition, as shown in FIG. 3, an auxiliary partition wall 21 extending upward and downward from the main partition wall 22 may be formed at the center of the partition wall 22 based on the cross section.

Here, the auxiliary partition wall 21 together with the partition wall 22, the separation distance between the first, second, third, fourth twisted pairs (10a, 10b, 10c, 10d) disposed inside the sheath portion 30. By securing it serves to reduce the internal interference of the first, second, third, fourth twisted pairs (10a, 10b, 10c, 10d).

On the other hand, the spacer 25, as shown in Figure 3, the plurality of ribs 26 for separating the stranded portion 10 and the sheath portion 30 and the support portion 24 for supporting the rib portion 26 It may be configured to include).

That is, the separation distance between the first, second, third, and fourth twisted pair portions 10a, 10b, 10c, and 10d and the sheath portion 30 may be secured through the configuration of the rib portion 26 and the support portion 24. It is.

In addition, the support portion 24 is configured to extend in both directions at both ends of the partition wall 22, the support portion 24, as shown in Figure 3, at a predetermined angle along the inner diameter of the sheath portion 30 It is formed by tilting.

That is, the first, second, third, and fourth twisted pair portions 10a, 10b, 10c, and 10d are appropriately disposed in the inner space formed by the partition wall 22 and the support portion 24 in accordance with the large pitch p of each stranded portion. In this way, internal interference between the first, second, third, and fourth twisted pair portions 10a, 10b, 10c, and 10d, and external interference with adjacent other UTP cables can be effectively prevented.

Here, the thicknesses t1 and t2 or the heights h1 and h2 of the spacers 25 may be provided differently according to the large pitch p of the stranded part 10.

Preferably, the longer the pitch pitch p of the stranded part 10 is, the greater the thickness or height on the cross section of the spacer 25 adjacent to the stranded part 10.

That is, the cross-sectional thickness t1 or the height h1 of the spacer 25 adjacent to the first stranded wire portion 10a having the longest pitch p is set longer than that of the first stranded wire portion 10a. It is formed larger than the thickness t2 or height h2 on the cross section of the spacer 25 adjacent to the 3rd twisted-pair part 10c provided with p).

As a result, the first twisted pair 10a is disposed closest to the central axis of the cable in the sheath 30, and thus spaced apart from the twisted pair having the same large pitch p of the other UTP cable. By securing distance, extraterrestrial interference can be overcome.

In addition, the UTP cable according to the present invention in the same context as described above, the distance between the center of the twisted pair 10 and the UTP cable on the basis of the cross-section is different depending on the large pitch (p) of the twisted pair 10 Can be prepared.

Preferably, the longer the pitch (p) of the twisted pair 10, the distance between the center of the twisted pair 10 and the UTP cable (V1, V2, V3, V4) can be reduced.

That is, as shown in FIG. 3, the distance V1 between the center of the first twisted pair 10a having the longest large pitch p and the cable center is the distance between the center of the second twisted pair 10b and the cable center ( V2) or less, wherein V1 and V2 are smaller than the distance V3 between the center of the third twisted pair part 10c and the cable center and the distance V4 between the center of the fourth twisted pair part 10d and the cable center V4. do.

In general, the effects of data loss and distortion due to extraterrestrial interference are determined by the large pitch (p) length, and the longer the pitch, the greater the effects of extraterrestrial interference.

Therefore, the first twisted pair 10a having the longest major pitch among the twisted pairs is disposed at the position closest to the center of the cable to prevent the influence of external interference.

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, it may be configured to further include an electromagnetic shielding sheath made of a conductive material inside the sheath portion 30.

In addition, the UTP cable according to the present invention may further include a rip cord 32 inserted along the longitudinal direction of the UTP cable for easy stripping of the sheath portion 30.

As described above, the UTP cable according to the present invention, by specially manufacturing the shape of the separator that separates each stranded portion to adjust the arrangement of each stranded portion, it is possible to more effectively overcome the external interference, the longest pitch is the longest As the twisted pair is positioned at the center of the cable, it is possible to maximize the separation distance from the twisted pair having the same large pitch in adjacent cables, thereby minimizing the influence of external interference.

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 it should be understood by those skilled 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 Related Art [0002]
10: stranded portion 10a: first stranded portion
10b: second twisted pair 10c: third twisted pair
10d: 4th twisted pair 12: conducting wire
20: separator 21: spaced protrusion
22: bulkhead 24: support
25 spacer 26 rib portion
t1, t2: thickness of the spacer h1, h2: height of the spacer
V1, V2, V3, V4: distance between the center of the cable and the center of each twisted pair
p: Large pitch

Claims

At least two stranded wire portions formed such that at least two insulation-coated wires are spirally twisted to have a large pitch;
A separator including partition walls spaced apart from each other by the twisted pair;
A sheath portion surrounding the stranded portion and the separator;
A spacer for separating the stranded portion from the sheath portion;
The barrier rib of the separator is formed so as to meet with the spacer at an acute angle (θ) UTP cable with improved external interference by the separator.

The method of claim 1,
The separator includes an auxiliary partition wall protruding from the central portion of the partition wall, the partition wall and the auxiliary partition wall is a UTP cable with improved external interference by the separator, characterized in that formed inclined mutually.

The method of claim 1,
And the spacer includes a support portion facing the stranded portion and a rib portion for separating the support portion from the sheath portion.

The method of claim 3, wherein
The support part includes two support parts coupled to both ends of the partition wall,
UTP cable with improved external interference by the separator, characterized in that the plurality of ribs are connected to each of the two support.

The method of claim 4, wherein
Utipi cable with improved external interference by the separator, characterized in that the ribs having different heights or thicknesses are formed in the two support portions coupled to both ends of the partition wall.

delete

At least two stranded wire portions formed such that at least two insulation-coated wires are spirally twisted to have a large pitch;
A separator including partition walls spaced apart from each other by the twisted pair;
A sheath portion surrounding the stranded portion and the separator;
A spacer for separating the stranded portion from the sheath portion;
The spacer includes a support portion facing the stranded portion and a rib portion disposed between the support portion and the sheath portion,
The UTP cable having improved external interference by a separator, wherein the rib part is disposed between the stranded part having the longest major pitch among the stranded parts and the sheath part.

The method of claim 11,
The separator includes an auxiliary partition wall protruding from the central portion of the partition wall, the partition wall and the auxiliary partition wall is a UTP cable with improved external interference by the separator, characterized in that formed inclined mutually.

The method of claim 11,
The support portion is formed by coupling two at both ends of the partition wall, the support portion formed to be coupled to the both ends of the partition wall ribs having different heights or thicknesses are combined Utipi improved by the separator cable.

The method of claim 11,
The support part is UTP cable with improved external interference by the separator, characterized in that formed in the form of a line bent at a certain angle on the cross section.

At least two stranded wire portions formed such that at least two insulation-coated wires are spirally twisted to have a large pitch;
A separator including partition walls spaced apart from each other by the twisted pair;
A sheath portion surrounding the stranded portion and the separator;
A spacer for separating the stranded portion from the sheath portion;
The spacer includes a first spacer formed at one end of the partition wall to be inclined to meet the partition wall and a second spacer formed at the other end of the partition wall to be inclined to meet the partition wall,
The stranded part having the longest major pitch among the stranded parts is disposed at a portion where the first spacer and the partition wall meet at an acute angle, and the stranded part having the second longest major pitch among the stranded parts has an acute angle at the second spacer. UTP cable with improved external interference by the separator, characterized in that disposed in the meeting portion.

The method of claim 15,
The separator includes an auxiliary partition wall protruding from the central portion of the partition wall, the partition wall and the auxiliary partition wall is a UTP cable with improved external interference by the separator, characterized in that formed inclined mutually.

The method of claim 15,
And the first and second spacers each include a support portion facing the stranded portion and a rib portion for separating the support portion and the sheath portion, wherein the external interference is improved by the UTP cable.

The method of claim 17,
The UTP cable having improved external interference by a separator, wherein the ribs included in the first space and the second spacer are configured to have different heights or thicknesses.

The method of claim 17,
The support part is UTP cable with improved external interference by the separator, characterized in that formed in the form of a line bent at a certain angle on the cross section.