WO2020168670A1 - 一种hdmi电缆 - Google Patents

一种hdmi电缆 Download PDF

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Publication number
WO2020168670A1
WO2020168670A1 PCT/CN2019/095215 CN2019095215W WO2020168670A1 WO 2020168670 A1 WO2020168670 A1 WO 2020168670A1 CN 2019095215 W CN2019095215 W CN 2019095215W WO 2020168670 A1 WO2020168670 A1 WO 2020168670A1
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WO
WIPO (PCT)
Prior art keywords
wire
hdmi cable
comb
cable
hdmi
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Application number
PCT/CN2019/095215
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English (en)
French (fr)
Inventor
李先俊
Original Assignee
济宁市海富电子科技有限公司
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Application filed by 济宁市海富电子科技有限公司 filed Critical 济宁市海富电子科技有限公司
Priority to US17/431,834 priority Critical patent/US11949192B2/en
Publication of WO2020168670A1 publication Critical patent/WO2020168670A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/502—Bases; Cases composed of different pieces
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
    • H01R13/6581—Shield structure
    • H01R13/6585—Shielding material individually surrounding or interposed between mutually spaced contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
    • H01R13/6591—Specific features or arrangements of connection of shield to conductive members
    • H01R13/65912—Specific features or arrangements of connection of shield to conductive members for shielded multiconductor cable
    • H01R13/65914—Connection of shield to additional grounding conductors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
    • H01R13/6581—Shield structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
    • H01R13/6591—Specific features or arrangements of connection of shield to conductive members
    • H01R13/6594—Specific features or arrangements of connection of shield to conductive members the shield being mounted on a PCB and connected to conductive members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R27/00—Coupling parts adapted for co-operation with two or more dissimilar counterparts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
    • H01R43/0249—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections for simultaneous welding or soldering of a plurality of wires to contact elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
    • H01R43/0263—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections for positioning or holding parts during soldering or welding process

Definitions

  • the present invention relates to the field of cable technology, and more specifically, to an HDMI cable having a wire comb for cable termination inside.
  • 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.
  • Fig. 1 is a perspective view showing a prior art HDMI cable connector
  • Fig. 2 is a cross-sectional view showing the structure of a prior art coaxial cable for HDMI.
  • the coaxial cable for HDMI shown in FIG. 2 includes a plurality of dual-axis data lines 100 and a plurality of single-axis signal lines 200, and the plurality of dual-axis data lines 100 and the plurality of single-axis signal lines 200 are twisted with each other.
  • Fig. 3 is a schematic diagram showing a state where the HDMI cable connector and the coaxial cable in the prior art are directly terminated.
  • the HDMI cable termination method is to cut and peel off the outer sheath and outer shielding layer of the end of the HDMI coaxial cable 8 and then unfold and weld each wire 81 to the corresponding one of the connector 7 On each bonding pad 71. Since the wires 81 are arranged irregularly and in large numbers, this welding method can only be done manually, and the work efficiency is very low.
  • a scheme of connecting the HDMI cable connector and the HDMI coaxial cable using a relay circuit board is also proposed.
  • the relay circuit board 72 is provided between the coaxial cable 8 for HDMI and the connector part 7.
  • a plurality of wire pads 722 for soldering the wires 81 of the coaxial cable 8 are arranged; on the other side of the relay circuit board 72, there are arranged
  • the pitch and pad arrangement of these connector pads 721 correspond to the connection terminals of the HDMI cable connector; multiple wire pads 722 and multiple Between the two connector pads 721, the respective corresponding pads are electrically connected through printed circuit wiring.
  • the spacing between the plurality of wire pads 722 is greater than the spacing between the plurality of connector pads 721 so as to easily solder the wires 81 of the coaxial cable 8 to the wire pads.
  • the wires 81 of the coaxial cable 8 are soldered to the wire pads 722 of the relay circuit board 72 first, and then the connector pads The 721 side is aligned with the connection terminal of the connector part 7, and the relay circuit board 72 is soldered to the connector part 7 by, for example, a pressure welding process.
  • a pressure welding process for example, a pressure welding process.
  • the shielding layer of each wire needs a certain length, which results in the anti-electromagnetic resistance of the wire and the relay circuit board part from the shielding layer.
  • the interference performance is greatly reduced, and it is easy to cause the distortion of the transmitted data and the signal.
  • HDMI cable connector that can easily and quickly connect the wires of the coaxial cable to the HDMI cable connector, and can maintain the anti-electromagnetic interference performance of the HDMI cable.
  • the present invention provides an HDMI cable that improves assembly efficiency and enhances the performance of resistance to external electromagnetic interference.
  • the present invention provides an HDMI cable, which includes: a connector part, including an HDMI interface end, a shell, and a wire comb connection end for electrically connecting with a wire comb for cable termination.
  • a connector part including an HDMI interface end, a shell, and a wire comb connection end for electrically connecting with a wire comb for cable termination.
  • One wire connection pad including multiple wires and ground wires for transmitting data and signals; and wire termination wire comb, made of conductive material, used to insert and fix the HDMI cable
  • Each of the wires further includes one or more ground terminals extending toward the connector side; the ground terminals and the wires are electrically connected to the corresponding wire connection pads of the connector portion.
  • the ground wire of the HDMI cable is electrically connected to the main body of the wire terminal comb.
  • the entire wire comb for wire termination may be integrally formed by a metal stamping process.
  • the wire comb for wire termination includes a flat plate and a U-shaped plate mounted on the flat plate through a clamping plate, and a wire groove is formed between the U-shaped plate and adjacent U-shaped plates. The wires are inserted and fixed in the wire slot.
  • a first protrusion extending obliquely downward and a second protrusion extending obliquely away from the connector portion are provided on both surfaces of the two side walls of the U-shaped plate.
  • the HDMI cable includes a dual-axis data cable
  • the dual-axis data cable includes: two innermost data transmission lines, and a protective covering on the outer side of the two data transmission lines And a shielding layer wound on the outer side 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.
  • the shielding layer is formed by spirally winding long strips of shielding tape around the outer periphery of the protective layer in an overlapping manner. During the spiral winding process, the first metal of the shielding layer One side edge of the foil layer and one side edge of the second metal foil layer overlap each other.
  • the wire comb for cable termination can make the wires neatly arranged, without hand-held wire welding, so automatic welding, such as hot pressure welding or laser welding, can be used to improve connection efficiency and connection accuracy.
  • the U-shaped board is installed with a card board to form a wire trough.
  • the number of wire troughs and the position of the wire trough can be flexibly set according to the number of wires in the cable, which can be applied to cables of different specifications.
  • Figure 1 is a perspective view showing a prior art HDMI cable connector
  • FIG. 2 is a cross-sectional view showing the structure of a coaxial cable for HDMI in the prior art
  • FIG. 3 is a schematic diagram showing a state where the HDMI cable connector and the coaxial cable in the prior art are directly terminated;
  • Fig. 4 is a schematic diagram showing a state in which a prior art HDMI cable is connected to the HDMI cable connector through a relay circuit board;
  • FIG. 5 is a perspective view showing the internal structure of the HDMI cable according to the present invention.
  • FIG. 6 is a perspective view showing the connection state of the connector part and the cable termination comb in the HDMI cable according to the present invention.
  • FIG. 7 is a cross-sectional view showing a biaxial data line used in the HDMI cable of the present invention.
  • FIG. 8 is a schematic diagram showing the winding overlap state of the shielding layer structure of the biaxial data line used in the HDMI cable according to the present invention.
  • FIG. 5 is a perspective view showing the internal structure of the HDMI cable according to the present invention
  • FIG. 6 is a perspective view showing the connection state of the connector portion and the cable termination comb in the HDMI cable according to the present invention.
  • the HDMI cable of the present invention includes a connector portion 7, a cable termination comb 6, and an HDMI cable.
  • the connector part 7 includes an HDMI interface terminal for connecting with digital electronic devices such as a computer, a housing, and a wire comb connection terminal for electrical connection with the cable termination wire comb.
  • the HDMI interface terminal and The circuit connecting the wire comb connection ends, etc. A plurality of wire connection pads are provided at the wire comb connection end, and these wire connection pads are used for electrical connection with the connection pads on the wire comb for cable termination.
  • the wire comb for cable termination is integrally formed from conductive materials such as aluminum sheet, stainless steel sheet, etc. through a metal stamping process, or it may be formed by combining multiple wire comb components made of conductive materials.
  • the wire comb for cable termination according to the present invention has conductivity as a whole.
  • the wire comb for cable termination has a plurality of wire slots, and each slot has an opening for inserting each wire of the HDMI cable.
  • the wire slot can also be in the form of a hole.
  • the wire comb 6 for cable termination includes a flat plate 61 and a U-shaped plate 63 mounted on the flat plate 61 through the clamping plate 62, wherein the bottom of the U-shaped plate 63 is attached to the flat plate 61.
  • the clamping plate 62 is also U-shaped, and the inner sides of both sides of the U-shaped groove of the clamping plate 62 are in contact with the bottom inner side of the U-shaped plate 63 and the lower surface of the flat plate 61 to fix the U-shaped plate 63 on the flat plate 61.
  • U-shaped plate 63 on the upper surface and the lower surface of the plate 61, and make the bottoms of the two U-shaped plates 63 contact the surface of the plate 61, and the inner sides of the two U-shaped grooves of the card plate 62
  • the two U-shaped plates 63 are respectively contacted with the bottom inner side of the U-shaped plate 63 and fixed on the flat plate 61.
  • the U-shaped plate 63 can also be installed in combination with the ground terminal 64 described later, and both can be fixed on the flat plate 61 by the clamping plate 62, which will not be described in detail here.
  • a wire slot is formed between the U-shaped plate 63 and the adjacent U-shaped plate 63.
  • the opening of each wire slot is perpendicular to the plane where the wire connection pad 71 of the connector part 7 is located.
  • the connector portion 7 has a plurality of wire connection pads 71, and these wire connection pads 71 are used to connect to the respective wires 81 of the HDMI cable. If the connector portion 7 has a structure in which the wire connection pads 71 are provided on the upper and lower sides, the U-shaped plates 63 can be installed on the upper and lower sides of the flat plate 61 in the wire comb for cable termination, so that the wires 81 can be separated. Place it in the corresponding wire slot.
  • the wire comb 6 for cable termination further includes one or more ground terminals 64 extending from the wire comb body toward the connector portion 7.
  • the installation position of the ground terminal 64 corresponds to the wire connection pad for grounding of the connector portion 7.
  • the wire comb for cable termination in this embodiment is only exemplary, and the form of the wire comb 6 for cable termination can also be stamped and integrally formed, and a wire groove for accommodating wires and a ground terminal for grounding are formed during molding. As long as it has the form of a wire slot and a ground terminal, this embodiment is not used to limit the structure of the wire comb.
  • the sheathed part of the wire 81 is inserted and fixed in the corresponding wire groove of the wire comb for cable termination.
  • the dual-axis data cable does not need to be separated, and the dual-axis data cable can be inserted and fixed in the corresponding wire slot in a conjoined state.
  • the ground wire of the HDMI cable should be directly connected to the cable comb body for cable termination.
  • the shielding layer of the HDMI cable has a grounding function
  • the shielding layer stripped from the wire 81 may be connected to the wire groove of the wire comb for cable termination.
  • the ground of the HDMI cable is connected to the ground terminal through the body of the wire comb for cable termination.
  • the ground terminal is electrically connected to the ground wire connection pad of the connector part
  • the HDMI cable The ground wire is connected to the connector part of the HDMI cable.
  • each wire is clamped and fixed by the wire comb 6 for short-circuiting the cable, the position of the wire can be guaranteed not to change, and it is easy to quickly connect each wire to the wire connection pad of the connector part by welding or crimping.
  • the length of the wire portion from which the shielding layer has been stripped is very short, and the wire groove of the wire comb 6 for short-circuiting cables made of metal material also has a certain shielding effect, thus enhancing Resistance to external electromagnetic interference.
  • the dual-axis data cable 100 used in the HDMI cable of the present invention
  • the dual-axis data cable 100 includes two data transmission lines located at the innermost side, a protective layer 4 covering the outer sides of the two data transmission lines 1, and a protective layer formed by winding on the protective layer. 4 Outer shielding layer 3.
  • 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 outer second metal foil layer 33 can be made of metal materials such as aluminum and copper
  • the insulating layer 32 can be made of FEP (perfluoroethylene propylene copolymer) material, polyester film tape, etc. .
  • 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.
  • the HDMI cable includes the biaxial data cable structured as described above, which can improve the anti-external electromagnetic interference performance when transmitting high-frequency data.
  • the connector part and the wires of the HDMI cable are connected internally by the wire connecting wire comb, which can quickly realize the assembly of the HDMI cable, and can also fix the wires to prevent them. Move in the interior. In addition, it can also enhance the performance of the HDMI cable against external electromagnetic interference.

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Abstract

一种HDMI电缆，其包括：连接器部（7），包括HDMI接口端、外壳和用于与电缆端接用线梳（6）电连接的线梳连接端，在该线梳连接端设有多个导线连接焊盘（71）；HDMI用线缆（100），包含用于传输数据及信号的多个导线（81）和接地线；以及电缆端接用线梳（6），由导电材料构成，用于插入并固定该HDMI用线缆（100）的各导线（81），还具备朝着连接器侧延伸出的1个以上接地端子（64）；该接地端子（64）和导线（81）电连接在连接器部（7）的相对应的该导线连接焊盘（71）上。根据上述结构，能够快速地实现HDMI电缆的组装，还能够增强抗外部电磁干扰的性能。

Description

一种HDMI电缆 技术领域
本发明涉及线缆技术领域，更具体地说，涉及在内部具有电缆端接用线梳的HDMI电缆。
背景技术
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。
图1是表示现有技术的HDMI电缆连接器的立体图；图2是表示现有技术的HDMI用同轴线缆的结构的横截面图。图2所示的HDMI用同轴线缆，其包括多个双轴数据线100和多个单轴信号线200，多个双轴数据线100和多个单轴信号线200相互绞合。
图3是表示现有技术的HDMI电缆连接器和同轴线缆直接端接的状态的示意图。通常HDMI电缆端接采用的方式是将HDMI用同轴线缆8的端头的外护套和外屏蔽层割开并剥离后，依次将各个导线81展开并焊接到连接器部7的对应的各接线焊盘71上。由于各个导线81无规则排列且数量较多，这种焊接方式只能通过手动方式完成，作业效率非常低。
此外，也提出了利用中继电路板将HDMI电缆连接器和HDMI用同轴线缆连接起来的方案。如图4所示，在HDMI用同轴线缆8和连接器部7之间，设置了中继电路板72。在该中继电路板72的一侧，排列设有用于焊接同轴线缆8的各导线81的多个导线焊盘722；在该中继电路板72的另一侧，排列设有用于焊接到连接器部7上的多个连接器焊盘721，这些连接器焊盘721的间距及焊盘布置与HDMI电缆用连接器的各连接端子相对应；多个导线焊盘722和多个连接 器焊盘721之间，通过印刷电路布线将各自对应的焊盘电连接。优选地，多个导线焊盘722之间的间距大于多个连接器焊盘721之间的间距，以便容易地将同轴线缆8的各导线81分别焊接到该导线焊盘上。在利用如上所述的中继电路板72时，先将同轴线缆8的各导线81依次焊接到所述中继电路板72的各导线焊盘722上，然后将连接器焊盘721侧对准到连接器部7的连接端子上，通过例如压焊工艺将中继电路板72焊接在连接器部7上。利用如上所述的中继电路板，虽然提高了焊接同轴电缆的各导线的作业方便性，但需要增设额外的部件和增加焊接作业，而且，新增设的印刷电路板也会降低信号完整性。
再者，如上所述的现有技术中，为了焊接同轴线缆的导线，各导线的屏蔽层要一段长度，这样就导致被剥离了屏蔽层的导线和中继电路板部分的抗电磁干扰性能大大降低，容易引起传输数据及信号的失真。
因此，需要研发能够方便快捷地将同轴线缆的各导线连接到HDMI电缆连接器上，又可以保持HDMI电缆的抗电磁干扰性能的HDMI电缆连接器。
发明内容
为解决以上问题，本发明提供一种提高组装效率、且增强抗外部电磁干扰的性能的HDMI电缆。
本发明提供的一种HDMI电缆，其包括:连接器部，包括HDMI接口端、外壳和用于与电缆端接用线梳电连接的线梳连接端，在所述线梳连接端设有多个导线连接焊盘；HDMI用线缆，包含用于传输数据及信号的多个导线和接地线；以及导线端接用线梳，由导电材料构成，用于插入并固定所述HDMI用线缆的各导线，还具备朝着所述连接器侧延伸出的1个以上接地端子；所述接地端子和所述导线电连接在所述连接器部的相对应的所述导线连接焊盘上。
此外，还可以是，所述HDMI用线缆的接地线与所述导线端接用线梳的本体电连接。
此外，还可以是，整个所述导线端接用线梳通过金属冲压工艺一体形成。
此外，还可以是，所述导线端接用线梳包括平板以及通过卡板安装在所述平板上的U型板，所述U型板以及相邻的U型板之间构成线槽，在所述线槽中插入并固定所述各导线。
此外，也可以是，在所述U型板的两个侧壁的两面上设有斜向下方向延伸 出的第一突出部，以及朝向远离连接器部的方向倾斜延伸的第二突出部。
此外，也可以是，所述HDMI用线缆中包含双轴数据线缆，所述双轴数据线缆包括：最内侧的两根数据传输线、包覆在所述两根数据传输线的外侧的保护层、以及缠绕形成在该保护层外侧的屏蔽层，所述屏蔽层包括位于内侧的第一金属箔层、位于中间的绝缘层和位于外侧的第二金属箔层。
此外，也可以是，所述屏蔽层是将长条形的屏蔽带以依次搭接的方式螺旋缠绕在所述保护层的外周而形成，在螺旋缠绕过程中，所述屏蔽层的第一金属箔层的一侧边缘部与所述第二金属箔层的一侧边缘部相互搭接。
根据如上所述的本发明，具备以下的有益效果：
(1)现有技术中为了将电线与电缆连接器的接线端子连接，需要拨开外皮和外屏蔽层摊开电线以便焊接，这造成电线的非屏蔽部分较长，会降低信号完整性、增加串扰。而本申请采用电缆端接用线梳接地，将HDMI线缆的各导线穿入在线梳的线槽中，未被屏蔽层包围的导线长度较短，金属材料构成并且接地的线槽可以具备一定的屏蔽作用，因此增强了抗外部电磁干扰的性能。
(2)通过电缆端接用线梳可以使得导线整齐排列，不用手持导线焊接，因此可以采用自动焊接，例如热压焊或激光焊接，提高连接效率和连接精度。
(3)由于布置更紧密，连接器部的长度减小，有助于减少系统中HDMI插座的负载。
(4)采用卡板安装U型板形成线槽，可以根据线缆中导线的数量灵活设置线槽的数量以及线槽的位置，能够适用不同规格的电缆。
附图说明
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。
图1是表示现有技术的HDMI电缆连接器的立体图；
图2是表示现有技术的HDMI用同轴线缆的结构的横截面图；
图3是表示现有技术的HDMI电缆连接器和同轴线缆直接端接的状态的示意图；
图4是表示现有技术的HDMI用线缆通过中继电路板连接到HDMI电缆连 接器的状态的示意图；
图5是表示本发明涉及的HDMI电缆的内部结构的立体图；
图6是表示本发明涉及的HDMI电缆中的连接器部和电缆端接用线梳的连接状态的立体图；
图7是表示本发明涉及的HDMI电缆中使用的双轴数据线的横截面图；
图8是表示本发明涉及的HDMI电缆中使用的双轴数据线的屏蔽层结构的缠绕搭接状态的示意图。
具体实施方式
下面将参考附图来描述本发明所述的具有双轴线束的电缆端接用线梳及端接方法的实施例。
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。
图5是表示本发明涉及的HDMI电缆的内部结构的立体图；图6是表示本发明涉及的HDMI电缆中的连接器部和电缆端接用线梳的连接状态的立体图。如图5、图6所示，本发明的HDMI电缆包括连接器部7、电缆端接用线梳6和HDMI用线缆。
连接器部7包括用于与电脑等数字电子设备连接的HDMI接口端、外壳和用于与电缆端接用线梳电连接的线梳连接端，此外在外壳内还可以设置将HDMI接口端和线梳连接端连接起来的电路等。在所述线梳连接端，设有多个导线连接焊盘，这些导线连接焊盘用于与电缆端接用线梳上的连接焊盘电连接。
电缆端接用线梳通过金属冲压工艺例如由铝片、不锈钢片等导电材料一体形成，也可以由多个导电材料构成的线梳部件组合而成。总之，本发明涉及的电缆端接用线梳整体具有导电性能。
电缆端接用线梳具有多个线槽，每个线槽具有用于插入HDMI用线缆的各导线的开口。当然，线槽也可以是孔洞的形式。
以图6为例来说明一种组合型电缆端接用线梳的结构。所述电缆端接用线 梳6包括平板61以及通过卡板62安装在平板61上的U型板63，其中，U型板63的底部与平板61贴合。卡板62同样为U型，卡板62的U型槽的两边内侧与U型板63的底部内侧以及平板61的下表面接触，从而将U型板63固定在平板61上。当然，还可以是在平板61的上表面和下表面分别设置一个U型板63，并使得两个U型板63的底部都与平板61的表面接触，卡板62的U型槽的两边内侧分别与U型板63的底部内侧接触，把两个U型板63固定在平板61上。U型板63还可以和后面所述的接地端子64组合安装，都可以采用卡板62固定在平板61上，在此不做详述。
所述U型板63以及相邻的U型板63之间形成线槽。每个线槽的开口垂直于连接器部7的导线连接焊盘71所在平面。可以从图6中看出，连接器部7具有多个导线连接焊盘71，这些导线连接焊盘71用于与HDMI用线缆的各个导线81连接。如果连接器部7具有在上下两侧都设有导线连接焊盘71的结构，则可以在电缆端接用线梳中的平板61的上下两面分别安装U型板63，从而可以将导线81分别放置在相应的线槽内。具体说，需要跟上侧的导线连接焊盘71连接，则把导线81插入到平板61上侧的线槽内；如果要跟下侧的导线连接焊盘71连接，则把导线81插入到平板61的下侧的线槽内。
所述电缆端接用线梳6还具备自线梳本体朝着连接器部7伸出的一个以上接地端子64。该接地端子64的设置位置与连接器部7的接地用的导线连接焊盘相对应。
本实施例的电缆端接用线梳仅是示例性的，电缆端接用线梳6的形式也可以是冲压一体成型，并在成型时形成容纳电线的线槽和用于接地的接地端子。只要具有线槽和接地端子的形式，本实施例并不用于限制线梳的结构。
在组装HDMI电缆时，首先将HDMI用线缆的各导线的外皮和屏蔽层按规定长度剥开露出金属线，然后根据各导线和连接器部的导线连接焊盘之间的对应关系，将各导线81的带外皮部分插入并固定在电缆端接用线梳的相应的线槽中固定。例如，双轴数据线不需要分离，将双轴数据线在连体的状态下插入并固定在相应的线槽中即可。其中，HDMI用线缆的接地导线要直接连接到电缆端接用线梳本体上。或着，当HDMI用线缆的屏蔽层具有接地功能的情况下，也可以使自导线81剥离的屏蔽层连接到电缆端接用线梳的线槽上。这样，HDMI用线缆的接地就通过电缆端接用线梳的本体与接地端子连 通，当该接地端子与连接器部的接地用的导线连接焊盘电连接时，就将HDMI用线缆的接地线连接到HDMI电缆的连接器部。
由于通过电缆短接用线梳6夹持和固定各导线，能够保证导线位置不变动，并且，易于将各导线通过焊接或压接作业快捷地连接到连接器部的导线连接焊盘上。另外，相比于现有技术，被剥离了屏蔽层的导线部分的长度很短，而且，金属材料制成的电缆短接用线梳6的线槽也具有一定的屏蔽作用，因此，增强了抗外部电磁干扰的性能。
下面，作为一个优选实施例，说明本发明的HDMI用线缆中使用的双轴数据线缆100的结构。如图7、图8所示，该双轴数据线缆100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。
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。
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。
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，第一金属箔层31和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。
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。
在本发明的HDMI电缆中，HDMI用线缆中包含如上所述结构的双轴数据线缆，可以提高传输高频数据时的抗外部电磁干扰性能。
综上所述，根据本发明的HDMI电缆，在内部利用导线连接线梳将连接器部和HDMI用线缆的各导线连接起来，能够快速地实现HDMI电缆的组装，还可以固定各导线防止其在内部的移动。此外，还可以增强HDMI电缆抗外部电磁干扰的性能。
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。

Claims (7)

  1. 一种HDMI电缆，其特征在于，包括：
    连接器部，包括HDMI接口端、外壳和用于与电缆端接用线梳电连接的线梳连接端，在所述线梳连接端设有多个导线连接焊盘；
    HDMI用线缆，包含用于传输数据及信号的多个导线和接地线；以及
    导线端接用线梳，由导电材料构成，用于插入并固定所述HDMI用线缆的各导线，还具备朝着所述连接器侧延伸出的1个以上接地端子；
    所述接地端子和所述导线电连接在所述连接器部的相对应的所述导线连接焊盘上。
  2. 根据权利要求1所述的HDMI电缆，其特征在于：
    所述HDMI用线缆的接地线与所述导线端接用线梳的本体电连接。
  3. 根据权利要求1或2所述的HDMI电缆，其特征在于：
    整个所述导线端接用线梳通过金属冲压工艺一体形成。
  4. 根据权利要求1或2所述的HDMI电缆，其特征在于：
    所述导线端接用线梳包括平板以及通过卡板安装在所述平板上的U型板，所述U型板以及相邻的U型板之间构成线槽，在所述线槽中插入并固定所述各导线。
  5. 根据权利要求4所述的HDMI电缆，其特征在于：
    在所述U型板的两个侧壁的两面上设有斜向下方向延伸出的第一突出部，以及朝向远离连接器部的方向倾斜延伸的第二突出部。
  6. 根据权利要求1或2所述的HDMI电缆，其特征在于：
    所述HDMI用线缆中包含双轴数据线缆，所述双轴数据线缆包括：最内侧的两根数据传输线、包覆在所述两根数据传输线的外侧的保护层、以及缠绕形成在该保护层外侧的屏蔽层，所述屏蔽层包括位于内侧的第一金属箔层、位于中间的绝缘层和位于外侧的第二金属箔层。
  7. 根据权利要求6所述的HDMI电缆，其特征在于：
    所述屏蔽层是将长条形的屏蔽带以依次搭接的方式螺旋缠绕在所述保护层的外周而形成，在螺旋缠绕过程中，所述屏蔽层的第一金属箔层的一侧边缘部与所述第二金属箔层的一侧边缘部相互搭接。
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