WO2020168671A1 - Data cable and manufacturing method thereof - Google Patents

Data cable and manufacturing method thereof Download PDF

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Publication number
WO2020168671A1
WO2020168671A1 PCT/CN2019/095216 CN2019095216W WO2020168671A1 WO 2020168671 A1 WO2020168671 A1 WO 2020168671A1 CN 2019095216 W CN2019095216 W CN 2019095216W WO 2020168671 A1 WO2020168671 A1 WO 2020168671A1
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Prior art keywords
layer
data transmission
metal foil
transmission lines
foil layer
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PCT/CN2019/095216
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French (fr)
Chinese (zh)
Inventor
李先俊
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济宁市海富电子科技有限公司
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Publication of WO2020168671A1 publication Critical patent/WO2020168671A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00—Communication cables or conductors
    • H01B11/02—Cables with twisted pairs or quads
    • H01B11/06—Cables with twisted pairs or quads with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
    • H01B13/26—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping
    • H01B13/2613—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping by longitudinal lapping
    • H01B13/266—Bending and adhesively bonding of a metallic screen

Definitions

  • the present invention relates to the technical field of cables, and in particular to a data cable and a manufacturing method thereof for improving electromagnetic shielding performance against external electromagnetic interference.
  • HDMI cable is the high-definition multimedia interface cable, which is the abbreviation of High Definition Multimedia Interface. It is a digital video/audio interface technology that can transmit uncompressed high-definition video and multi-channel audio data with high quality; at the same time, there is no need to transmit Digital/analog or analog/digital conversion can be carried out before, to ensure the highest quality video and audio signal transmission.
  • the HDMI cable usually includes the data cable shown in Figure 1 as the data cable.
  • Fig. 1 is a cross-sectional view showing a data cable in the prior art
  • Fig. 2 is a schematic diagram showing the winding and overlapping of the inner shield layer in the prior art
  • the data cable in the prior art includes two parallel data transmission lines 1, a grounding wire composed of a metal conductor, and a shielding layer covering the outside of the data transmission line 1 and the grounding wire 2. 3 and a protective layer 4 located outside the shielding layer 3.
  • the data transmission line 1 includes a core 11 composed of metal wires and a skin layer 12 covering the outer periphery of the core.
  • the ground line 2 is arranged near the data transmission line 1 along the length direction of the data transmission line 1, the two data transmission lines 1 and the ground line 2 are wrapped with a shielding layer 3 outside. Then, a protective layer 4 is formed on the outer side of the shielding layer 3 to prevent the shielding layer 3 from opening during bending and twisting.
  • the shielding layer 3 includes a first metal foil layer 31 on the inner side and an insulating layer 32 on the outer side.
  • the first metal foil layer 31 functions to shield electromagnetic interference from the outside.
  • the shielding layer 3 is spirally wound on the outside of the two data transmission lines 1 and the grounding line 2 in a sequential overlapping manner. As shown in Figure 2, during the process of winding the shielding layer 3, the first metal foil layer 31 is wound on the inside of the cable, and the insulating layer 32 is wound on the outside. One edge of the first metal foil layer 31 is insulated from the previously wound The edge portions of the layer 32 overlap each other, and the other side edge portion of the first metal foil layer 31 is in contact with the ground wire 2.
  • the tension of the ground wire 2 will cause the two data transmission lines 1 to separate them inconsistently over the entire length of the cable, thereby causing the impedance of the data transmission line to fluctuate up and down. This reduces the consistency required to maintain the minimum and maximum impedance, thereby negatively affecting signal integrity.
  • the location of the ground wire can cause manufacturing problems, and the ground wire cannot be terminated by automated methods or single-wire termination. In this way, when the data transmission line and the ground line are not in the same plane, they cannot be terminated at the same time. Therefore, most ground wires on data cables are manually terminated or using secondary processes.
  • the present invention provides a data cable that does not have a ground wire while improving the shielding performance against external electromagnetic interference.
  • the data cable according to the present invention includes: a plurality of data transmission lines arranged in parallel with each other, a core composed of a conductive material and an outer skin layer provided on the periphery of the core; a protective layer surrounding the plurality of data transmission lines Is provided on the outer circumference of the data transmission line; a shielding layer is provided on the outer circumference of the protective layer in a winding and overlapping manner; the shielding layer includes a first metal foil layer located on the inner side, an insulating layer located in the middle, and a second layer located on the outer side Two metal foil layers, the adjacent first metal foil layer and the second metal foil layer are partially overlapped with each other.
  • a data cable manufacturing method related to the present invention includes the following steps: placing a plurality of data transmission lines in parallel; forming a protective layer on the outer periphery of the plurality of data transmission lines placed in parallel; forming a shield on the outer periphery of the protective layer Layer, the shielding layer includes a first metal foil layer located on the inner side, an insulating layer located in the middle, and a second metal foil layer located on the outer side, and the adjacent first metal foil layer and the second metal foil The layers partially overlap each other.
  • Eliminating the grounding wire in the data cable can prevent the frequent separation of the data transmission line within the cable length caused by the grounding wire, which makes the data transmission line more tightly constrained, resulting in a more consistent impedance value.
  • Forming a protective layer on the outer periphery of the data transmission line can provide a tighter and greater binding force for the data transmission line, thereby reducing the possibility of a sharp increase in signal attenuation.
  • Figure 1 is a cross-sectional view showing a data cable in the prior art
  • FIG. 2 is a schematic diagram showing the winding and overlapping structure of the inner shielding layer in the prior art
  • Figure 3 is a cross-sectional view showing the data cable involved in the present invention.
  • FIG. 4 is a schematic diagram showing the winding and overlapping structure of the inner shielding layer of the data cable according to the present invention.
  • Fig. 3 is a cross-sectional view showing a data cable according to the first embodiment of the present invention.
  • the data cable involved in the first embodiment of the present invention includes two data transmission lines located at the innermost side, a protective layer 4 covering the outside of the two data transmission lines 1, and a protective layer 4 wound around the protective layer. Shield layer 3 outside layer 4.
  • each data transmission line 1 includes a core 11 made of metal wires and an outer skin 12 covering the outer periphery of the core 11.
  • the core 11 may be a single-wire conductor composed of one metal wire, or a twisted-wire structure composed of a plurality of metal wires twisted with each other.
  • a twisted structure can reduce the displacement of the core 11, stabilize the structure and transmission parameters, and have a higher ductility.
  • copper may be used as the core material, and the outer side of the core 11 is coated with a BTA (benzotriazole) layer.
  • BTA can form a thin film on the surface of the core 11 to avoid corrosion.
  • a protective layer 4 is formed on the outer side of the two data transmission lines 1.
  • the protective layer 4 may be formed of a resin material for protecting the data transmission line 1 and insulating it from the outside.
  • the protective layer 4 may be a polyester film tape, and an adhesive is partially coated on the polyester film tape.
  • the protective layer 4 can be formed by spirally winding a strip of polyester film tape on the outside of the two data transmission lines 1 using a spiral winding method, or can be formed integrally on the outer periphery of the data transmission line 1 using a resin coating process. According to the above structure, since a separate ground wire is not included and the protective layer 4 is formed on the outer periphery of the data transmission line 1, it is possible to provide tighter and greater restraint force, thereby reducing the possibility of a sharp increase in signal attenuation.
  • the shielding layer 3 is provided on the outer periphery of the protective layer 4.
  • the shielding layer 3 includes a first metal foil layer 31 located on the inner side, an insulating layer 32 located in the middle, and a second metal foil layer 33 located on the outer side.
  • the first metal foil layer 31 and the second metal foil layer 33 located on the outside can be made of metal materials such as aluminum and copper
  • the insulating layer 32 can be made of FEP (perfluoroethylene propylene copolymer) material or polyester film tape. And so on.
  • the shielding layer 3 is formed by spirally winding a strip of shielding tape on the outer periphery of the protective layer 4 in a sequential overlapping manner. During the winding process, one side edge of the first metal foil layer 31 of the shielding layer 3 It overlaps with one side edge of the second metal foil layer 33, so that the adjacent first metal foil layer 31 and the second metal foil layer 33 are in electrical contact with each other. In this way, compared with the prior art data cable shown in FIG. 2, the area of the complete shielding layer is increased, and the shielding effect against external electromagnetic interference is improved.
  • an outer shield layer made of metal material is provided on the outside of the data cable (usually the outside of a plurality of data cables arranged in a distributed manner). 5.
  • the outer shielding layer 5 may be, for example, tinned annealed multiple strands of annealed copper wires woven into a mesh structure.
  • the second metal foil layer 33 provided on the outside of the shielding layer 3 is in electrical contact with the outer shielding layer 5.
  • the first metal foil layer 31, the second metal foil layer 33 and the outer shielding layer 3 that are in electrical contact with each other Layer 5 forms a complete shielding structure, so that it is difficult for external electromagnetic interference to enter the inside of the data cable and interfere with the transmission performance of the high-frequency signal in the data transmission line.
  • the present invention also provides a manufacturing method for manufacturing the above-mentioned data cable.
  • the manufacturing method will be described in detail.
  • the two data transmission lines 1 are preferably in close contact, but they may be kept at a predetermined distance from each other.
  • a protective layer 4 is formed on the outer side of the two data transmission lines 1 placed in parallel.
  • the protective layer 4 can be formed by spirally winding a strip of polyester film tape on the outside of the two data transmission lines 1 using a spiral winding method, or can be formed integrally on the outer periphery of the data transmission line 1 using a resin coating process.
  • a shield layer 3 including a first metal foil layer located on the inner side, an insulating layer located in the middle, and a second metal foil layer located on the outer side is formed.
  • the shielding layer 3 is formed by spirally winding a strip of shielding tape around the outer circumference of the protective layer 4 in a partially overlapping manner.
  • the adjacent first metal foil layer 31 and the second metal foil layer 33 partially overlap each other to be in electrical contact.
  • the data cable made by the above manufacturing method does not contain a separate ground wire, and the protective layer 4 is formed on the outer circumference of the data transmission line 1, which can provide tighter and greater binding force, thereby reducing the sharp increase in signal attenuation possibility.
  • the area of the complete shielding layer is increased, and the shielding effect against external electromagnetic interference is improved.
  • a data cable including two data transmission lines is taken as an example for description, but there is no doubt that the data cable of the present invention may include one or more data transmission lines inside.
  • the materials of the constituent elements of the data cable according to the present invention may not be limited to the materials exemplified in the above-mentioned embodiments, and other known materials may be used.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Insulated Conductors (AREA)

Abstract

A data cable and a manufacturing method thereof. The data cable comprises: multiple data transmission lines (1) arranged parallel to one another, the data transmission line comprising a core body (11) made of an electrically-conductive material and an outer sheath layer (12) arranged at the periphery of the core body (11); a protection layer (4) arranged at the periphery of the multiple data transmission lines (1) to enclose the same; and shielding members (3) connected in an overlapping manner and wound around the periphery of the protection layer (4), wherein the shielding member (3) comprises an inner first metal foil layer (31), a middle insulating layer (32) and an outer second metal foil layer (33), and the first metal foil layer (31) of one shielding member (3) partially overlaps with the second metal foil layer (33) of the shielding member (3) adjacent thereto. The above structure can effectively shield external electromagnetic interference, thereby exhibiting favorable electromagnetic shielding performance.

Description

一种数据线缆及其制造方法Data cable and manufacturing method thereof 技术领域Technical field
本发明涉及线缆技术领域，具体地说，涉及一种提高对外部电磁干扰的电磁屏蔽性能的数据线缆及其制造方法。The present invention relates to the technical field of cables, and in particular to a data cable and a manufacturing method thereof for improving electromagnetic shielding performance against external electromagnetic interference.
背景技术Background technique
随着多媒体技术的高速发展，人们对多媒体传输质量提出了越来越高的要求,尤其对高清多媒体的需求增多，单纯的传输视频或者音频信号的多媒体已经不能满足现在社会的需求。HDMI线即高清晰多媒体接口线，是High Definition Multimedia Interface的缩写，是一种数字化视频/音频接口技术，能高品质地传输未经压缩的高清视频和多声道音频数据；同时无需在信号传送前进行数/模或者模/数转换，可以保证最高质量的影音信号传送。HDMI电缆通常包含如图1所示的数据线缆作为数据线。With the rapid development of multimedia technology, people have put forward higher and higher requirements for the quality of multimedia transmission, especially the demand for high-definition multimedia. Multimedia that simply transmits video or audio signals can no longer meet the needs of the current society. HDMI cable is the high-definition multimedia interface cable, which is the abbreviation of High Definition Multimedia Interface. It is a digital video/audio interface technology that can transmit uncompressed high-definition video and multi-channel audio data with high quality; at the same time, there is no need to transmit Digital/analog or analog/digital conversion can be carried out before, to ensure the highest quality video and audio signal transmission. The HDMI cable usually includes the data cable shown in Figure 1 as the data cable.
图1是表示现有技术中的数据线缆的横截面图，图2是表示现有技术中的内屏蔽层的缠绕搭接示意图。如图1及图2所示，现有技术中的数据线缆包括两根相互平行的数据传输线1、由金属导体构成的接地线2、包覆在数据传输线1和接地线2外侧的屏蔽层3以及位于该屏蔽层3外侧的保护层4。其中，数据传输线1包括由金属导线构成的芯体11以及包覆在芯体外周的外皮层12。将接地线2沿着数据传输线1的长度方向设置在该数据传输线1附近之后，在两根数据传输线1和接地线2的外侧用屏蔽层3缠绕包覆。然后，在屏蔽层3的外侧再形成保护层4，以防止屏蔽层3在弯折和绞合期间开口。Fig. 1 is a cross-sectional view showing a data cable in the prior art, and Fig. 2 is a schematic diagram showing the winding and overlapping of the inner shield layer in the prior art. As shown in Figures 1 and 2, the data cable in the prior art includes two parallel data transmission lines 1, a grounding wire composed of a metal conductor, and a shielding layer covering the outside of the data transmission line 1 and the grounding wire 2. 3 and a protective layer 4 located outside the shielding layer 3. Wherein, the data transmission line 1 includes a core 11 composed of metal wires and a skin layer 12 covering the outer periphery of the core. After the ground line 2 is arranged near the data transmission line 1 along the length direction of the data transmission line 1, the two data transmission lines 1 and the ground line 2 are wrapped with a shielding layer 3 outside. Then, a protective layer 4 is formed on the outer side of the shielding layer 3 to prevent the shielding layer 3 from opening during bending and twisting.
屏蔽层3包括位于内侧的第一金属箔层31和位于外侧的绝缘层32，第一金属箔层31起到屏蔽来自外部的电磁干扰的作用。所述屏蔽层3以依次搭接的方式螺旋缠绕在两根数据传输线1和接地线2的外侧。如图2所示，在缠绕屏蔽层3过程中，第一金属箔层31位于线缆内侧，绝缘层32位于外侧的方式缠绕，第一金属箔层31的一侧边缘部与之前缠绕的绝缘层32的边缘部相互搭接接触，而且，第一金属箔层31的另一侧边缘部与接地线2接触。由此，外部的电磁干 扰会通过缠绕后的第一金属箔层31之间的绝缘层32传入到线缆内部，对数据传输线1中传输的数据信号造成干扰。尤其是在数据线1传输高频的视频信号时，外部电磁干扰的影响会更明显。The shielding layer 3 includes a first metal foil layer 31 on the inner side and an insulating layer 32 on the outer side. The first metal foil layer 31 functions to shield electromagnetic interference from the outside. The shielding layer 3 is spirally wound on the outside of the two data transmission lines 1 and the grounding line 2 in a sequential overlapping manner. As shown in Figure 2, during the process of winding the shielding layer 3, the first metal foil layer 31 is wound on the inside of the cable, and the insulating layer 32 is wound on the outside. One edge of the first metal foil layer 31 is insulated from the previously wound The edge portions of the layer 32 overlap each other, and the other side edge portion of the first metal foil layer 31 is in contact with the ground wire 2. As a result, external electromagnetic interference will be introduced into the cable through the insulating layer 32 between the first metal foil layers 31 after winding, and cause interference to the data signal transmitted in the data transmission line 1. Especially when the data line 1 transmits high-frequency video signals, the influence of external electromagnetic interference will be more obvious.
此外，在实际使用中，接地线2的张力会使两根数据传输线1在整个电缆长度内将它们不一致地分离，从而导致数据传输线的阻抗上下波动。这样降低了保持阻抗最小值和最大值所需的一致性，由此对信号完整性产生了负面影响。此外，接地线的位置会引起制造问题，不能用自动化方法或单线端接来端接接地线。这样，当数据传输线和接地线不在同一平面内时，它们不能被同时端接。因此，数据线缆上的大多数接地线是手动端接或利用二次工艺。In addition, in actual use, the tension of the ground wire 2 will cause the two data transmission lines 1 to separate them inconsistently over the entire length of the cable, thereby causing the impedance of the data transmission line to fluctuate up and down. This reduces the consistency required to maintain the minimum and maximum impedance, thereby negatively affecting signal integrity. In addition, the location of the ground wire can cause manufacturing problems, and the ground wire cannot be terminated by automated methods or single-wire termination. In this way, when the data transmission line and the ground line are not in the same plane, they cannot be terminated at the same time. Therefore, most ground wires on data cables are manually terminated or using secondary processes.
发明内容Summary of the invention
为解决以上问题，本发明提供一种不具备接地线的同时提高对外部电磁干扰的屏蔽性能的数据线缆。In order to solve the above problems, the present invention provides a data cable that does not have a ground wire while improving the shielding performance against external electromagnetic interference.
本发明涉及的数据线缆包括：相互平行设置的多根数据传输线，具备由导电材料构成的芯体和设在所述芯体外周的外皮层；保护层，包围着所述多根数据传输线而设置在所述数据传输线的外周；屏蔽层，以缠绕搭接方式设在所述保护层的外周，所述屏蔽层具备位于内侧的第一金属箔层、位于中间的绝缘层以及位于外侧的第二金属箔层，相邻的第一金属箔层和第二金属箔层相互部分搭接。The data cable according to the present invention includes: a plurality of data transmission lines arranged in parallel with each other, a core composed of a conductive material and an outer skin layer provided on the periphery of the core; a protective layer surrounding the plurality of data transmission lines Is provided on the outer circumference of the data transmission line; a shielding layer is provided on the outer circumference of the protective layer in a winding and overlapping manner; the shielding layer includes a first metal foil layer located on the inner side, an insulating layer located in the middle, and a second layer located on the outer side Two metal foil layers, the adjacent first metal foil layer and the second metal foil layer are partially overlapped with each other.
此外，本发明涉及的一种数据线缆制造方法包括以下步骤：将多根数据传输线平行放置；在平行放置的所述多根数据传输线的外周形成保护层；在所述保护层的外周形成屏蔽层，所述屏蔽层具备位于内侧的第一金属箔层、位于中间的绝缘层以及位于外侧的第二金属箔层，并且，相邻的所述第一金属箔层和所述第二金属箔层相互部分搭接。In addition, a data cable manufacturing method related to the present invention includes the following steps: placing a plurality of data transmission lines in parallel; forming a protective layer on the outer periphery of the plurality of data transmission lines placed in parallel; forming a shield on the outer periphery of the protective layer Layer, the shielding layer includes a first metal foil layer located on the inner side, an insulating layer located in the middle, and a second metal foil layer located on the outer side, and the adjacent first metal foil layer and the second metal foil The layers partially overlap each other.
根据上述结构的数据线缆，能够实现如下所述的有益效果：According to the data cable with the above structure, the following beneficial effects can be achieved:
(1)在数据线缆内取消接地线，可以防止接地线造成的数据传输线在电缆长度内频繁分离，使得数据传输线被更紧的约束，从而产生更一致的阻抗值。(1) Eliminating the grounding wire in the data cable can prevent the frequent separation of the data transmission line within the cable length caused by the grounding wire, which makes the data transmission line more tightly constrained, resulting in a more consistent impedance value.
(2)在数据传输线的外周形成保护层，能够为数据传输线提供更紧和更大的约束力，由此降低信号衰减急剧增加的可能性。(2) Forming a protective layer on the outer periphery of the data transmission line can provide a tighter and greater binding force for the data transmission line, thereby reducing the possibility of a sharp increase in signal attenuation.
(3)由于屏蔽层的相邻之间的第一金属箔层和第二金属箔层相互部分搭接，因此完整的屏蔽层面积增大，提高了对外部电磁干扰的抗干扰性能。(3) Since the first metal foil layer and the second metal foil layer between the adjacent shielding layers are partially overlapped with each other, the area of the complete shielding layer is increased, and the anti-interference performance against external electromagnetic interference is improved.
附图说明Description of the drawings
通过结合下面附图对其实施例进行描述，本发明的上述特征和技术优点将会变得更加清楚和容易理解。By describing its embodiments in conjunction with the following drawings, the above-mentioned features and technical advantages of the present invention will become clearer and easier to understand.
图1是表示现有技术中的数据线缆的横截面图；Figure 1 is a cross-sectional view showing a data cable in the prior art;
图2是表示现有技术中的内屏蔽层的缠绕搭接结构的示意图；FIG. 2 is a schematic diagram showing the winding and overlapping structure of the inner shielding layer in the prior art;
图3是表示本发明涉及的数据线缆的横截面图；Figure 3 is a cross-sectional view showing the data cable involved in the present invention;
图4是表示本发明涉及的数据线缆的内屏蔽层的缠绕搭接结构的示意图。FIG. 4 is a schematic diagram showing the winding and overlapping structure of the inner shielding layer of the data cable according to the present invention.
具体实施方式detailed description
下面将参考附图来描述本发明所述的数据线缆及其制造方法的实施例。本领域的普通技术人员可以认识到，在不偏离本发明的精神和范围的情况下，可以用各种不同的方式或其组合对所描述的实施例进行修正。因此，附图和描述在本质上是说明性的，而不是用于限制权利要求的保护范围。此外，在本说明书中，附图未按比例画出，并且相同的附图标记表示相同的部分。Hereinafter, embodiments of the data cable and the manufacturing method thereof according to the present invention will be described with reference to the accompanying drawings. Those of ordinary skill in the art may realize that the described embodiments can be modified in various different ways or combinations thereof without departing from the spirit and scope of the present invention. Therefore, the drawings and descriptions are illustrative in nature and are not used to limit the scope of protection of the claims. In addition, in this specification, the drawings are not drawn to scale, and the same reference numerals denote the same parts.
图3是表示本发明第一实施例涉及的数据线缆的横截面图。如图2所示，本发明第一实施例涉及的数据线缆包括位于最内侧的两根数据传输线1、包覆在该两根数据传输线1的外侧的保护层4、以及缠绕形成在该保护层4外侧的屏蔽层3。其中，各数据传输线1包括由金属导线构成的芯体11和包覆在芯体11外周的外皮层12。芯体11既可以是由一根金属导线构成的单线导体，也可以是由相互绞合的多根金属线构成的绞线结构。采用绞合结构能减小芯体11的位移，使结构和传输参数稳定，具有较高的延展性能。优选地，芯体材料可以使用铜，且在该芯体11的外侧涂覆有BTA(苯并三氮唑)层。BTA作为一种铜缓蚀剂可以在芯体11表面形成一层薄膜，避免腐蚀。Fig. 3 is a cross-sectional view showing a data cable according to the first embodiment of the present invention. As shown in FIG. 2, the data cable involved in the first embodiment of the present invention includes two data transmission lines located at the innermost side, a protective layer 4 covering the outside of the two data transmission lines 1, and a protective layer 4 wound around the protective layer. Shield layer 3 outside layer 4. Among them, each data transmission line 1 includes a core 11 made of metal wires and an outer skin 12 covering the outer periphery of the core 11. The core 11 may be a single-wire conductor composed of one metal wire, or a twisted-wire structure composed of a plurality of metal wires twisted with each other. The use of a twisted structure can reduce the displacement of the core 11, stabilize the structure and transmission parameters, and have a higher ductility. Preferably, copper may be used as the core material, and the outer side of the core 11 is coated with a BTA (benzotriazole) layer. As a copper corrosion inhibitor, BTA can form a thin film on the surface of the core 11 to avoid corrosion.
将两根数据传输线1设置成相互平行之后，在两根数据传输线1的外侧形成保护层4，该保护层例如可以由树脂材料形成，用于保护数据传输线1并使其与外部绝缘。优选地，所述保护层4可以是聚酯薄膜带，在该聚酯薄膜胶带上局部涂敷有粘接剂。After arranging the two data transmission lines 1 to be parallel to each other, a protective layer 4 is formed on the outer side of the two data transmission lines 1. The protective layer 4 may be formed of a resin material for protecting the data transmission line 1 and insulating it from the outside. Preferably, the protective layer 4 may be a polyester film tape, and an adhesive is partially coated on the polyester film tape.
保护层4可以是利用螺旋缠绕方式将长条形聚酯薄膜带螺旋缠绕在两根数据传输线1的外侧形成，也可以是利用树脂涂覆工艺一体形成在数据传输线1的外周。根据上述结构，由于不包含单独的接地线，并且在数据传输线1的外周形成保护层4，可以提供更紧和更大的约束力，由此降低信号衰减急剧增加的可能性。The protective layer 4 can be formed by spirally winding a strip of polyester film tape on the outside of the two data transmission lines 1 using a spiral winding method, or can be formed integrally on the outer periphery of the data transmission line 1 using a resin coating process. According to the above structure, since a separate ground wire is not included and the protective layer 4 is formed on the outer periphery of the data transmission line 1, it is possible to provide tighter and greater restraint force, thereby reducing the possibility of a sharp increase in signal attenuation.
此外，在保护层4的外周设有屏蔽层3。如图4所示，所述屏蔽层3包括位于内侧的第一金属箔层31、位于中间的绝缘层32和位于外侧的第二金属箔层33。优选地，该第一金属箔层31和位于外侧的第二金属箔层33可以由铝、铜等金属材料构成，绝缘层32可以是FEP(全氟乙烯丙烯共聚物)材料、聚酯薄膜带等形成。In addition, a shielding layer 3 is provided on the outer periphery of the protective layer 4. As shown in FIG. 4, the shielding layer 3 includes a first metal foil layer 31 located on the inner side, an insulating layer 32 located in the middle, and a second metal foil layer 33 located on the outer side. Preferably, the first metal foil layer 31 and the second metal foil layer 33 located on the outside can be made of metal materials such as aluminum and copper, and the insulating layer 32 can be made of FEP (perfluoroethylene propylene copolymer) material or polyester film tape. And so on.
所述屏蔽层3是将长条形的屏蔽带以依次搭接的方式螺旋缠绕在保护层4的外周而形成，在缠绕过程中，屏蔽层3的第一金属箔层31的一侧边缘部与第二金属箔层33的一侧边缘部相互搭接，从而使得相邻的第一金属箔层31与第二金属箔层33相互电接触。这样，同图2所示的现有技术的数据线缆相比，增大了完整屏蔽层的面积，提高了对外部电磁干扰的屏蔽效果。The shielding layer 3 is formed by spirally winding a strip of shielding tape on the outer periphery of the protective layer 4 in a sequential overlapping manner. During the winding process, one side edge of the first metal foil layer 31 of the shielding layer 3 It overlaps with one side edge of the second metal foil layer 33, so that the adjacent first metal foil layer 31 and the second metal foil layer 33 are in electrical contact with each other. In this way, compared with the prior art data cable shown in FIG. 2, the area of the complete shielding layer is increased, and the shielding effect against external electromagnetic interference is improved.
此外，在将本发明涉及的数据线缆用于例如HDMI电缆时，会在该数据线缆的外侧(通常是分布设置的多个数据线缆的外侧)设有由金属材料构成的外屏蔽层5，该外屏蔽层5例如可以是采用镀锡的经过退火处理的多股软铜丝编织成网状结构。此时，设在屏蔽层3外侧的第二金属箔层33同外屏蔽层5电接触，因此，相互电接触的屏蔽层3的第一金属箔层31、第二金属箔层33和外屏蔽层5形成完整的屏蔽结构，使得外部的电磁干扰很难进入到数据线缆内部而干扰数据传输线中的高频信号的传输性能。In addition, when the data cable involved in the present invention is used for, for example, an HDMI cable, an outer shield layer made of metal material is provided on the outside of the data cable (usually the outside of a plurality of data cables arranged in a distributed manner). 5. The outer shielding layer 5 may be, for example, tinned annealed multiple strands of annealed copper wires woven into a mesh structure. At this time, the second metal foil layer 33 provided on the outside of the shielding layer 3 is in electrical contact with the outer shielding layer 5. Therefore, the first metal foil layer 31, the second metal foil layer 33 and the outer shielding layer 3 that are in electrical contact with each other Layer 5 forms a complete shielding structure, so that it is difficult for external electromagnetic interference to enter the inside of the data cable and interfere with the transmission performance of the high-frequency signal in the data transmission line.
本发明还提供一种制造上述数据线缆的制造方法。下面，详细描述该制造方法。The present invention also provides a manufacturing method for manufacturing the above-mentioned data cable. Hereinafter, the manufacturing method will be described in detail.
首先，将两根数据传输线1平行放置。此时，两根数据传输线1优选紧密接触，但也可以相互间保持规定距离。First, place the two data transmission lines 1 in parallel. At this time, the two data transmission lines 1 are preferably in close contact, but they may be kept at a predetermined distance from each other.
然后，在平行放置的上述两根数据传输线1的外侧形成保护层4。保护层4可以是利用螺旋缠绕方式将长条形聚酯薄膜带螺旋缠绕在两根数据传输线1的外侧形成，也可以是利用树脂涂覆工艺一体形成在数据传输线1的外周。Then, a protective layer 4 is formed on the outer side of the two data transmission lines 1 placed in parallel. The protective layer 4 can be formed by spirally winding a strip of polyester film tape on the outside of the two data transmission lines 1 using a spiral winding method, or can be formed integrally on the outer periphery of the data transmission line 1 using a resin coating process.
接着，在保护层4的外周形成包括位于内侧的第一金属箔层、位于中间的 绝缘层、位于外侧的第二金属箔层的屏蔽层3。该屏蔽层3是将长条形的屏蔽带以部分搭接的方式螺旋缠绕在保护层4的外周而形成。屏蔽层3中，相邻的第一金属箔层31和第二金属箔层33相互间部分搭接而电接触。Next, on the outer periphery of the protective layer 4, a shield layer 3 including a first metal foil layer located on the inner side, an insulating layer located in the middle, and a second metal foil layer located on the outer side is formed. The shielding layer 3 is formed by spirally winding a strip of shielding tape around the outer circumference of the protective layer 4 in a partially overlapping manner. In the shielding layer 3, the adjacent first metal foil layer 31 and the second metal foil layer 33 partially overlap each other to be in electrical contact.
利用以上制造方法做出的数据线缆，由于不包含单独的接地线，并且在数据传输线1的外周形成保护层4，可以提供更紧和更大的约束力，由此降低信号衰减急剧增加的可能性。此外，同现有技术的数据线缆相比，增大了完整屏蔽层的面积，提高了对外部电磁干扰的屏蔽效果。The data cable made by the above manufacturing method does not contain a separate ground wire, and the protective layer 4 is formed on the outer circumference of the data transmission line 1, which can provide tighter and greater binding force, thereby reducing the sharp increase in signal attenuation possibility. In addition, compared with the data cable of the prior art, the area of the complete shielding layer is increased, and the shielding effect against external electromagnetic interference is improved.
在以上的实施例中，以包含两根数据传输线的数据线缆为例进行了说明，但毋庸置疑，本发明的数据线缆可以在内部包含一根或多根数据传输线。另外，本发明涉及的数据线缆中各构成要素的材料，可以不限于上述实施例中例举的材料，可以使用其它公知的材料构成。In the above embodiments, a data cable including two data transmission lines is taken as an example for description, but there is no doubt that the data cable of the present invention may include one or more data transmission lines inside. In addition, the materials of the constituent elements of the data cable according to the present invention may not be limited to the materials exemplified in the above-mentioned embodiments, and other known materials may be used.
以上所述仅为本发明的优选实施例，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。The foregoing descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc., made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

  1. 一种数据线缆，其特征在于，包括：A data cable, characterized in that it comprises:
    相互平行设置的多根数据传输线，具备由导电材料构成的芯体和设在所述芯体外周的外皮层；A plurality of data transmission lines arranged in parallel to each other have a core made of conductive material and a skin layer provided on the outer periphery of the core;
    保护层，包围着所述多根数据传输线而设置在所述数据传输线的外周；A protective layer, which surrounds the plurality of data transmission lines and is arranged on the outer periphery of the data transmission line;
    屏蔽层，以缠绕搭接方式设在所述保护层的外周，所述屏蔽层具备位于内侧的第一金属箔层、位于中间的绝缘层以及位于外侧的第二金属箔层，相邻的第一金属箔层和第二金属箔层相互部分搭接。The shielding layer is arranged on the outer periphery of the protective layer in a winding and overlapping manner. The shielding layer includes a first metal foil layer located on the inner side, an insulating layer located in the middle, and a second metal foil layer located on the outer side. A metal foil layer and a second metal foil layer partially overlap each other.
  2. 根据权利要求1所述的数据线缆，其特征在于，The data cable according to claim 1, wherein:
    包含两根相互平行设置的所述数据传输线。It includes two data transmission lines arranged in parallel with each other.
  3. 根据权利要求1或2所述的数据线缆，其特征在于，The data cable according to claim 1 or 2, wherein:
    所述保护层是将包含粘接剂的聚酯薄膜带缠绕在所述多根数据传输线的外周而形成。The protective layer is formed by winding a polyester film tape containing an adhesive around the outer circumference of the plurality of data transmission lines.
  4. 根据权利要求1或2所述的数据线缆，其特征在于，The data cable according to claim 1 or 2, wherein:
    所述保护层是利用树脂涂敷工艺一体形成所述多根数据传输线的外周。The protective layer is formed by using a resin coating process to integrally form the outer periphery of the plurality of data transmission lines.
  5. 根据权利要求1或2所述的数据线缆，其特征在于，The data cable according to claim 1 or 2, wherein:
    在所述屏蔽层的外侧，还可以设置由导电材料构成的外屏蔽层，所述外屏蔽层与所述屏蔽层的外侧的第二金属箔层电接触。On the outer side of the shielding layer, an outer shielding layer made of conductive material may also be provided, and the outer shielding layer is in electrical contact with the second metal foil layer on the outer side of the shielding layer.
  6. 一种数据线缆制造方法，其特征在于，包括以下步骤：A method for manufacturing a data cable is characterized by comprising the following steps:
    将多根数据传输线平行放置；Place multiple data transmission lines in parallel;
    在平行放置的所述多根数据传输线的外周形成保护层；Forming a protective layer on the outer periphery of the plurality of data transmission lines placed in parallel;
    在所述保护层的外周形成屏蔽层，所述屏蔽层具备位于内侧的第一金属箔层、位于中间的绝缘层以及位于外侧的第二金属箔层，并且，相邻的所述第一金属箔层和所述第二金属箔层相互部分搭接。A shielding layer is formed on the outer periphery of the protective layer. The shielding layer includes a first metal foil layer located inside, an insulating layer located in the middle, and a second metal foil layer located outside, and the adjacent first metal The foil layer and the second metal foil layer partially overlap each other.
  7. 根据权利要求6所述的数据线缆制造方法，其特征在于，The method of manufacturing a data cable according to claim 6, wherein:
    所述保护层是将包含粘接剂的聚酯薄膜带缠绕在所述多根数据传输线的外周而形成。The protective layer is formed by winding a polyester film tape containing an adhesive around the outer circumference of the plurality of data transmission lines.
  8. 根据权利要求6所述的数据线缆制造方法，其特征在于，The method of manufacturing a data cable according to claim 6, wherein:
    所述保护层是利用树脂涂敷工艺一体形成所述多根数据传输线的外周。The protective layer is formed by using a resin coating process to integrally form the outer periphery of the plurality of data transmission lines.
PCT/CN2019/095216 2019-02-18 2019-07-09 Data cable and manufacturing method thereof WO2020168671A1 (en)

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109979673A (en) * 2019-02-18 2019-07-05 济宁市海富电子科技有限公司 A kind of data cable and its manufacturing method
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WO2021144725A1 (en) * 2020-01-14 2021-07-22 Molex, Llc Multi-layered, shielded and grounded cables and related methods

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0597324A1 (en) * 1992-11-02 1994-05-18 Sumitomo Wiring Systems, Ltd. Wire harness
JP2012003852A (en) * 2010-06-14 2012-01-05 Auto Network Gijutsu Kenkyusho:Kk Shielded wire and assembly of shielded wire and terminal
CN205080922U (en) * 2015-10-28 2016-03-09 通盈电业（深圳）有限公司 Novel shielded cable
CN105469883A (en) * 2013-04-03 2016-04-06 江苏亨通线缆科技有限公司 Overhead communication data high-speed transmission composite cable
CN206480388U (en) * 2016-12-31 2017-09-08 江苏江扬电缆有限公司 A kind of automotive light weight technology CAN system cable
CN107464613A (en) * 2017-09-15 2017-12-12 苏州市光益捷通信科技有限公司 A kind of high-speed data cable
CN109979673A (en) * 2019-02-18 2019-07-05 济宁市海富电子科技有限公司 A kind of data cable and its manufacturing method
CN110033898A (en) * 2019-02-18 2019-07-19 济宁市海富电子科技有限公司 A kind of HDMI cable
CN110034443A (en) * 2019-02-18 2019-07-19 济宁市海富电子科技有限公司 A kind of HDMI cable

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2842670Y (en) * 2005-11-09 2006-11-29 李明斌 Novel high-definition multi-media interface digital-code signal transmission cable
CN201673723U (en) * 2010-05-21 2010-12-15 河北华通线缆集团有限公司 Square cable for telecommunication equipment
CN202258420U (en) * 2011-09-05 2012-05-30 深圳立讯精密工业股份有限公司 High-speed signal transmission cable
CN208045183U (en) * 2018-03-22 2018-11-02 富士康(昆山)电脑接插件有限公司 Core wire group and the cable for using the core wire group

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0597324A1 (en) * 1992-11-02 1994-05-18 Sumitomo Wiring Systems, Ltd. Wire harness
JP2012003852A (en) * 2010-06-14 2012-01-05 Auto Network Gijutsu Kenkyusho:Kk Shielded wire and assembly of shielded wire and terminal
CN105469883A (en) * 2013-04-03 2016-04-06 江苏亨通线缆科技有限公司 Overhead communication data high-speed transmission composite cable
CN205080922U (en) * 2015-10-28 2016-03-09 通盈电业（深圳）有限公司 Novel shielded cable
CN206480388U (en) * 2016-12-31 2017-09-08 江苏江扬电缆有限公司 A kind of automotive light weight technology CAN system cable
CN107464613A (en) * 2017-09-15 2017-12-12 苏州市光益捷通信科技有限公司 A kind of high-speed data cable
CN109979673A (en) * 2019-02-18 2019-07-05 济宁市海富电子科技有限公司 A kind of data cable and its manufacturing method
CN110033898A (en) * 2019-02-18 2019-07-19 济宁市海富电子科技有限公司 A kind of HDMI cable
CN110034443A (en) * 2019-02-18 2019-07-19 济宁市海富电子科技有限公司 A kind of HDMI cable

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