CN215496153U

CN215496153U - Serial port communication cable

Info

Publication number: CN215496153U
Application number: CN202122313650.XU
Authority: CN
Inventors: 李桑蒿; 陈炎炎; 文维益; 周浩
Original assignee: Hunan Valin Wire and Cable Co Ltd
Current assignee: Hunan Valin Wire and Cable Co Ltd
Priority date: 2021-09-24
Filing date: 2021-09-24
Publication date: 2022-01-11
Anticipated expiration: 2031-09-24

Abstract

The utility model discloses a serial communication cable which comprises an outer sheath and a plurality of twisted-pair unit groups arranged in the outer sheath, wherein each twisted-pair unit group comprises two twisted-pair wire cores, each wire core comprises a conductor and a foamed polyethylene layer coated on the conductor, and a main screen leakage wire positioned outside the twisted-pair unit group is arranged in the outer sheath. According to the serial port communication cable provided by the utility model, the main screen leakage line is arranged, so that interference current can be discharged, the potentials are equal, the interference is reduced, and the transmission efficiency is improved.

Description

Serial port communication cable

Technical Field

The utility model relates to the field of cables, in particular to a serial port communication cable.

Background

The communication cable is a communication cable composed of a plurality of mutually insulated wires or conductors, and a communication line with a sealed sheath is arranged outside the cable.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a serial port communication cable, and aims to solve the technical problem.

In order to achieve the purpose, the serial port communication cable provided by the utility model comprises an outer sheath and a plurality of twisted-pair unit groups arranged in the outer sheath, wherein each twisted-pair unit group comprises two twisted-pair wire cores, each wire core comprises a conductor and a foamed polyethylene layer coated on the conductor, and a main screen leakage wire positioned outside the twisted-pair unit group is arranged in the outer sheath.

In an embodiment, the serial communication cable further includes an aluminum-plastic composite tape layer, the aluminum-plastic composite tape is exposed outside the wire core, and a tape repetition rate of the aluminum-plastic composite tape is not less than 15%.

In one embodiment, a copper stranded wire is arranged in the aluminum-plastic composite belt.

In an embodiment, the serial port communication cable further includes a plurality of split screen relief lines, the number of the split screen relief lines is equal to the number of the pair-twisted unit groups, and each split screen relief line and a core are wrapped by the aluminum-plastic composite tape.

In an embodiment, the serial port communication cable further includes an aluminum-plastic bag total shield, the aluminum-plastic bag total shield covers the plurality of twisted pair unit groups and the outside of the total screen leakage line, a pitch diameter ratio of the aluminum-plastic bag total shield is not greater than 16 times, and the outermost layer of twisted pair direction is the right direction.

In an embodiment, the serial port communication cable further comprises a braided shielding layer, and the braided shielding layer is coated outside the aluminum-plastic bag main shielding layer.

In an embodiment, the serial communication cable further includes a flame-retardant wrapping layer, and the flame-retardant wrapping layer is wrapped outside the braided shielding layer and located inside the outer sheath.

In the technical scheme of the utility model, the serial communication cable comprises an outer sheath and a plurality of twisted-pair unit groups arranged in the outer sheath, each twisted-pair unit group comprises two twisted-pair wire cores, each wire core comprises a conductor and a foamed polyethylene layer coated on the conductor, and a main screen leakage line positioned outside the twisted-pair unit group is arranged in the outer sheath.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a serial communication cable according to an embodiment of the present invention.

The reference numbers illustrate: 10. a pair twisting unit group; 11. a wire core; 111. a conductor; 112. a foamed polyethylene layer; 20. an outer sheath; 30. a total screen leakage line; 40. dividing a screen and leaking a flow line; 50. aluminum-plastic composite belt layers; 60. the aluminum-plastic bag is subjected to total shielding; 70. weaving a shielding layer; 80. a flame retardant belting layer.

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

Moreover, the technical solutions in the embodiments of the present invention may be combined with each other, but it is necessary to be able to be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent, and is not within the protection scope of the present invention.

The utility model provides a serial port communication cable.

As shown in fig. 1, the serial communication cable provided in the embodiment of the present invention includes an outer sheath 20 and a plurality of twisted-pair unit sets 10 disposed in the outer sheath 20, where the twisted-pair unit sets 10 include two twisted-pair wire cores 11, each wire core 11 includes a conductor 111 and a foamed polyethylene layer 112 coated on the conductor 111, and a total screen leakage line 30 located outside the twisted-pair unit set 10 is disposed in the outer sheath 20.

In this embodiment, the serial communication cable includes an outer sheath 20 and a plurality of twisted pair unit sets 10 disposed in the outer sheath 20, the twisted pair unit set 10 includes two twisted pair cores 11, each of the twisted pair units 11 includes a conductor 111 and a polyethylene foam layer 112 coated on the conductor 111, and a main screen leakage line 30 disposed outside the twisted pair unit set 10 is disposed in the outer sheath 20.

The insulation is made of red and natural-color polyethylene insulation materials, the nominal insulation thickness is 0.6mm, the average value of the insulation thicknesses is not smaller than the nominal thickness, and the thickness of the thinnest part is not smaller than the nominal thickness by 90-0.1 mm.

The serial port communication cable further comprises an aluminum-plastic composite belt layer 50, the aluminum-plastic composite belt is exposed outside the wire core 11, the belt repetition rate of the aluminum-plastic composite belt is not less than 15%, the twisted pair belt adopts an aluminum-plastic belt with the width of 20-30 mm, the aluminum surface faces inwards, and a round copper stranded wire is placed. And then, winding and wrapping a layer of 20-30 mm polyester belt, wherein the overlapping rate of the belt is not less than 15%, curling and bag leakage cannot be caused, the twisting direction is the right direction, and the twisting pitch is not more than 100 mm. And to distinguish between different sets of twisted units 10 by preventing marking yarns when twisted.

In addition, in an embodiment, the serial port communication cable further includes a plurality of split-screen leakage flow lines 40, the number of the split-screen leakage flow lines 40 is equal to the number of the pair-twisting unit groups 10, and each of the split-screen leakage flow lines 40 and a core 11 are wrapped by the aluminum-plastic composite tape. In the present embodiment, the split shielding leakage flow line 40 is disposed at each of the twisted pair unit sets 10, so that the interference in the cable is further reduced by the cooperation of the split shielding leakage flow line 40 and the total shielding leakage flow line 30.

Meanwhile, the serial port communication cable further comprises an aluminum-plastic bag total shielding 60, the aluminum-plastic bag total shielding 60 is wrapped outside the plurality of pair-twisting unit groups 10 and the total screen leakage line 30, the pitch diameter ratio of the aluminum-plastic bag total shielding 60 is not more than 16 times, the twisting direction of the outermost layer is the right direction, a layer of aluminum-plastic tape is wrapped after cabling, the aluminum surface faces inwards, and a round copper stranded wire is placed. The overlapping rate of the wrapping tapes is not less than 15 percent.

Further, serial ports communication cable still includes braided shield 70, braided shield 70 cladding is in the outside on plastic-aluminum bag total shielding 60 layers, the copper wire is woven, the silk rule: 24/8/0.15, pitch not more than 40, weaving density not less than 80%.

The serial port communication cable further comprises a flame-retardant wrapping layer 80, the flame-retardant wrapping layer is wrapped outside the braided shielding layer 70 and located in the outer sheath 20, two layers of glass fiber tapes are wrapped, and the overlapping rate of wrapping tapes is not less than 25%.

In the above embodiment, the outer sheath 20 is made of low smoke halogen-free flame retardant polyolefin (manufactured by Tokuai (HW 461-9)), and the nominal thickness of the outer sheath 20 is 1.0mm, the average thickness is not less than 1.0mm, and the thickness of the thinnest part is not less than 0.75 mm.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The serial communication cable is characterized by comprising an outer sheath and a plurality of twisted-pair unit groups arranged in the outer sheath, wherein each twisted-pair unit group comprises two twisted-pair wire cores, each wire core comprises a conductor and a foamed polyethylene layer coated on the conductor, and a main screen leakage line positioned outside the twisted-pair unit group is arranged in the outer sheath.

2. The serial port communication cable according to claim 1, further comprising an aluminum-plastic composite tape layer, wherein the aluminum-plastic composite tape layer is exposed outside the wire core, and a tape repetition rate of the aluminum-plastic composite tape is not less than 15%.

3. The serial port communication cable according to claim 2, wherein a copper stranded wire is arranged in the aluminum-plastic composite belt.

4. The serial port communication cable according to claim 3, further comprising a plurality of split screen relief lines, wherein the number of the split screen relief lines is equal to the number of the twisted pair unit groups, and each split screen relief line and a core are wrapped by the aluminum-plastic composite tape.

5. The serial port communication cable according to claim 4, further comprising an aluminum-plastic bag total shield, wherein the aluminum-plastic bag total shield covers the plurality of twisted pair unit groups and the outside of the total screen leakage line, the pitch ratio of the aluminum-plastic bag total shield is not more than 16 times, and the outermost twisted pair direction is the right direction.

6. The serial port communication cable according to claim 5, further comprising a braided shield layer, wherein the braided shield layer is coated outside the aluminum-plastic bag main shield layer.

7. The serial communication cable of claim 6, further comprising a flame retardant tape layer wrapped outside the braided shield and within the outer jacket.