CN113096879B - Electromagnetic shielding cable structure with shielding electric connector for power supply - Google Patents
Electromagnetic shielding cable structure with shielding electric connector for power supply Download PDFInfo
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- CN113096879B CN113096879B CN202110353337.0A CN202110353337A CN113096879B CN 113096879 B CN113096879 B CN 113096879B CN 202110353337 A CN202110353337 A CN 202110353337A CN 113096879 B CN113096879 B CN 113096879B
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- shielding
- layer
- electric connector
- insulating layer
- electromagnetic
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Classifications
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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
- H01B11/04—Cables with twisted pairs or quads with pairs or quads mutually positioned to reduce cross-talk
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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
- H01B11/10—Screens specially adapted for reducing interference from external sources
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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
- H01B11/10—Screens specially adapted for reducing interference from external sources
- H01B11/1033—Screens specially adapted for reducing interference from external sources composed of a wire-braided conductor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/02—Disposition of insulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/182—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments
- H01B7/183—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments forming part of an outer sheath
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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
- H01R13/648—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
- H01R13/6592—Specific features or arrangements of connection of shield to conductive members the conductive member being a shielded cable
Abstract
The invention provides an electromagnetic shielding cable structure with a shielding electric connector for a power supply, which comprises an electric connector, a heat-shrinkable tube, a conducting wire and a shielding layer, wherein an electric signal is protected by a Faraday cage of the shielding layer when passing through the cable, and the electromagnetic shielding cable structure is applied to the field of electromagnetic shielding and has the technical scheme that: the heat-shrinkable tube is made of soft polyolefin, a conducting layer is additionally arranged on the outer surface layer of the heat-shrinkable tube, the conducting layer is made of polyester fiber nickel-plated copper metal, the conducting wire is of a twisted-pair structure, fiber yarns are arranged between the conducting wire and the insulating layer, the shielding net is made by winding a double-layer copper-plated metal woven net, aramid yarns are arranged between the insulating layer and the shielding layer, the insulating layer and the shielding layer are tightly attached to each other, the insulating layer is arranged on the outer side of the shielding layer, and the insulating layer is made of cross-linked ethylene-tetrafluoroethylene polymer. The invention has the technical effects that: the conductive radiation quantity of the power supply wire under 0-200MHz is lower than the standard value, and enough margin is provided, thus improving the electromagnetic compatibility.
Description
Technical Field
The invention relates to the technical field of cable electromagnetic shielding, in particular to an electromagnetic shielding cable structure with a shielding electric connector for a power supply.
Background
Electromagnetic compatibility (EMC) refers to the ability of an electrical system or equipment to operate properly in a given electromagnetic environment without affecting the normal operation of other systems or equipment in the environment or being interfered by extraneous electromagnetic energy in the environment, as required by the design. The conventional power cable is generally a common cable, the outer layer of the cable is a metal woven mesh, the diameter of the metal mesh is about 2cm, the used wire is in a spiral winding form, the diameter is about 0.5cm, so that a gap between the wire and the metal mesh is large, a plug socket is a common metal plug socket, a large gap is formed between a heat shrinkable tube and the woven mesh, a weak link exists during electromagnetic compatibility testing, particularly, multiple frequency radiation exceeding standards occur in a frequency range of 0-200MHZ under the condition of RE 1024H, and product testing is seriously influenced.
Disclosure of Invention
The invention aims to overcome the defects of the conventional cable for a power supply and provides an electromagnetic shielding cable with a groove electric connector. The invention has the characteristics of clear principle, easy realization, simple structure and the like, can effectively improve the electromagnetic interference shielding efficiency and greatly reduce conducted interference radiation.
In order to solve the technical problems, the technical scheme of the invention is as follows: the utility model provides an area shielding electric connector's electromagnetic shield cable structure for power, this cable include electric connector, pyrocondensation pipe, wire, shielding layer, and the signal of telecommunication is protected through "Faraday cage" of shielding layer when affiliated cable, uses in the electromagnetic shield field, and its technical scheme's main points are: the electric connector is characterized in that a groove is formed between the electric connectors, the heat shrink tube is made of soft polyolefin, a conducting layer is additionally arranged on the outer surface layer of the heat shrink tube, the conducting layer is made of polyester fiber nickel-plated copper metal, the conducting layer is of a twisted-pair structure, fiber wires are arranged between the conducting layer and the insulating layer, the shielding net is made of double layers of copper-plated metal woven nets in a winding mode, aramid fibers are arranged between the insulating layer and the shielding layer, the insulating layer and the shielding layer are tightly attached to each other, the insulating layer is arranged on the outer side of the shielding layer, and the insulating layer is made of cross-linked ethylene-tetrafluoroethylene polymer. Electromagnetic interference signals are greatly shielded when the cable structure is coupled, so that the cable has good electromagnetic compatibility.
In order to realize further optimization of the invention, further measures are as follows: the metal shielding layer of the cable for the power supply is a double-layer metal net, and the size of a metal mesh is 0.01mm 2And the electromagnetic signals can be greatly attenuated when passing through the shielding layer by winding lines at intervals of 0.5cm, so that the shielding effect is improved.
Furthermore, the conducting wire is a shielded twisted pair, and a shielding layer of the shielded twisted pair is an aluminum foil.
Further, the electric connector is made of copper-plated aluminum alloy material.
Furthermore, the shielding layer arranged on the surface of the heat shrinkable tube is connected with the electric connector to form the equivalent body.
The invention has the advantages that:
1. the metal shielding layer is formed by winding a double-layer tinned copper mesh, so that the weight of the cable can be effectively reduced without losing the shielding effect of the cable.
2. The wire adopts a twisted pair structure, the directions of currents flowing through the two wires are opposite in the same axial plane, far-field radiation generated by a current element and a current loop of the two wires is mutually offset, the distance between the two wires is about 0.2cm, the thread pitch is about 4cm, and the far-field radiation is greatly reduced.
3. The copper-nickel-plated fiber composite is used as the surface layer of the heat shrinkable tube, so that the electromagnetic shielding capability of the heat shrinkable tube is improved on the basis of ensuring the flexibility and the ductility of the heat shrinkable tube, and the cable is constructed into an approximately closed Faraday cage, so that the electromagnetic shielding effect of the cable can be further improved.
4. The electric connector adopts a circumferential groove meshing mode, has a good shielding effect and is simple in manufacturing process.
5. The fiber yarn provided by the invention increases the durability of the insulating layer under the condition of not changing the thickness of the insulating layer.
6. The invention has the characteristics of clear principle, simple structure, convenient manufacture, effective reduction of electromagnetic radiation of a power supply cable and improvement of the anti-interference capability of transmission signals.
Drawings
Fig. 1 is a schematic diagram of an inserting interface plug of an electrical connector 1, wherein 11 is a circumferential groove shielding structure, and 12 is a screw hole.
Fig. 2 is a schematic diagram of an insertion interface socket of the electrical connector 1, wherein 1 is the electrical connector, 5 is a circumferential protruding shielding structure, and 12 is a screw hole.
Fig. 3 is a cross-sectional view of the cable, where 3 is a conductive wire, 4 is a shielding layer, 6 is a metal shielding layer, 7 is a first insulating layer, 8 is a second insulating layer, 9 is an aramid filament, 10 is a fiber filament, 13 is a shielded twisted pair, 14 is an aluminum foil, and 19 is a third insulating layer.
Fig. 4 is a schematic view showing a composition of a heat shrinkable tube, wherein 2 is a heat shrinkable tube, 15 is a tab portion, 16 is a clad portion, 17 is a soft olefin, and 18 is a polyester fiber plated nickel copper metal.
Fig. 5 is a schematic structural diagram of an electromagnetic shielding cable for a power supply with a shielding electrical connector according to the present invention.
Wherein: the cable comprises an electric connector 1, a heat shrinkable tube 2, a lead 3, a shielding layer 4, a circumferential protruding shielding structure 5, a metal shielding layer 6, a first insulating layer 7, a second insulating layer 8, an aramid fiber yarn 9, a fiber yarn 10, a circumferential groove shielding structure 11, a screw hole 12, a shielded twisted pair 13, an aluminum foil 14, a connector part 15, a coating part 16, soft olefin 17, a polyester fiber plated nickel-plated copper metal 18 and a third insulating layer 19.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in this application. All other embodiments that can be derived by a person skilled in the art without making any creative effort fall within the scope of protection of the present application.
As shown in fig. 1-4, the electromagnetic shielding cable structure for power supply with shielding electric connector of the present invention comprises an electric connector 1, a heat shrinkable tube 2, a conducting wire 3, and a shielding layer 4, wherein the connection relationship and the position relationship of the above components are as shown in fig. 5, the shielding layer 4 disposed on the surface of the heat shrinkable tube 2 is connected with the electric connector 1, the heat shrinkable tube 2 is coated on the periphery where the electric connector 1 is connected with the conducting wire 3, and the structure can effectively shield the electromagnetic radiation and the electromagnetic interference with the frequency in the range of 0-200 MHZ.
Shielding layer 4 is from interior toward including cellosilk 10 outward in proper order, first insulating layer 7, metallic shield 6, aramid fiber silk 9, second insulating layer 8, and the signal of telecommunication via "faraday cage" protection through shielding layer 4 during the cable is used in the electromagnetic shield field. The electric connector is characterized in that a groove is formed between the electric connectors 1, the heat shrinkable tube 2 is made of soft polyolefin, a conducting layer is additionally arranged on the outer surface layer of the heat shrinkable tube, the conducting layer is made of polyester fiber nickel-plated copper 18, the conducting wire 3 is in a twisted-pair structure, a fiber wire 10 is arranged between the conducting wire 3 and the first insulating layer 7, the shielding net is made of a double-layer copper-plated metal woven net in a winding mode, an aramid fiber wire 9 is arranged between the metal shielding layer 6 and the second insulating layer 8 and is tightly attached to the three, a third insulating layer 19 is arranged on the outer side of the shielding layer 4, and the insulating layer comprises a first insulating layer 7 and a second insulating layer 8 which are both crosslinked ethylene-tetrafluoroethylene polymers. The electromagnetic interference signal is largely shielded by coupling with the cable structure shown in fig. 3, so that the cable has good electromagnetic compatibility.
The metal shielding layer 6 of the power supply cable is a double-layer metal net, and the size of a metal mesh is 0.01mm2And the electromagnetic signals are wound into lines at intervals of 0.5cm, so that the electromagnetic signals can be greatly attenuated when passing through the metal shielding layer 6, and the shielding effect is improved. When the conducting wire 3 is a shielded twisted pair 13, the shielding layer of the shielded twisted pair 13 is an aluminum foil 14; the electric connector 1 is made of copper-plated aluminum alloy material; the materials have good electromagnetic shielding effect and good ductility, and the shielding layer 4 arranged on the surface of the heat shrinkable tube 2 is connected with the electric connector 1 to form an equivalent body, so that the material has good air tightness and good radiation shielding effect.
As shown in fig. 4, the heat shrinkable tube 2 includes a joint portion 15 and a clad portion 16, and the heat shrinkable tube 2 uses soft olefin 17 as a main material and the soft olefin is surface-coated with polyester fiber nickel-plated copper metal 18. Wherein the joint portion 15 and the covering portion 16 are two connected portions of the heat shrinkable tube, and the whole heat shrinkable tube 2 covers the periphery of the electrical connector 1 connected to the lead 3, and the connection relationship of the three is shown in fig. 5.
According to the specific embodiments, the invention is a high-reliability electromagnetic shielding cable for a power supply, which solves the problems of simple and crude structure, poor electromagnetic shielding effect, high interference transmittance and narrow use frequency range of a general cable, simplifies the cable structure, improves the air tightness and shielding performance of the cable and the electric connector 1, and expands the frequency application range of the power supply cable.
Claims (4)
1. The utility model provides an area shielding electric connector's electromagnetic shield cable structure for power which characterized in that: the structure comprises an electric connector (1), a heat shrinkable tube (2), a wire (3) and a shielding layer (4), wherein the electric connector is provided with a concave-convex occlusion structure on a plug surface, the electric connector (1) is a nickel-plated metal product and is provided with a circumferential concave-convex occlusion structure, the electric connector (1) is fixed by screws, screw holes (12) are countersunk head screw holes and do not penetrate through a bottom plate, the heat shrinkable tube (2) is soft polyolefin, the heat shrinkable tube (2) is divided into a joint part (15) and a coating part (16), the two parts are the same in material composition, are soft olefin (17), are plated with polyester fiber nickel-plated copper metal (18) on the surface layer, the wire (3) is in a copper core twisted pair structure, and the shielding layer (4) sequentially comprises a second filler, a first insulating layer (7), a metal shielding layer (6), a first filler and a second insulating layer (8) from inside to outside, the first filler and the second filler are respectively aramid filaments (9) and fiber filaments (10), the metal shielding layer (6) is a double-layer tinned copper net, and the first insulating layer (7) and the second insulating layer (8) are both cross-linked ethylene-tetrafluoroethylene copolymer;
The socket face of the electric connector (1) is provided with a circumferential protruding shielding structure (5), and the interface face of the electric connector (1) is provided with a circumferential groove shielding structure (11) matched with the circumferential protruding shielding structure (5), so that electromagnetic signals can be effectively prevented from being directly coupled to a circuit or the outside through gaps between connectors.
2. The electromagnetic shielding cable structure with shielding electric connector for power supply of claim 1, wherein: the heat shrinkable tube (2) is made of soft polyolefin, the polyester fiber nickel-plating copper metal arranged on the surface layer is made by polymerizing polyester fiber on the surface of the soft polyolefin, and the metal plating layer is of a nickel-copper-nickel structure.
3. The electromagnetic shielding cable structure with shielding electric connector for power supply of claim 1, wherein: the wire is a copper core wire, a first insulating layer (7) is arranged on the outer side of the copper core wire, the wire is a shielding twisted pair (13), and the shielding layer of the shielding twisted pair is an aluminum foil (14).
4. The electromagnetic shielding cable structure with shielding electric connector for power supply of claim 1, wherein: the metal shielding layer (6) is of a double-layer tinned copper net structure, and the metal shielding net is wrapped in a wrapping mode through a double-layer metal woven net in a winding mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110353337.0A CN113096879B (en) | 2021-04-01 | 2021-04-01 | Electromagnetic shielding cable structure with shielding electric connector for power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110353337.0A CN113096879B (en) | 2021-04-01 | 2021-04-01 | Electromagnetic shielding cable structure with shielding electric connector for power supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113096879A CN113096879A (en) | 2021-07-09 |
| CN113096879B true CN113096879B (en) | 2022-06-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110353337.0A Active CN113096879B (en) | 2021-04-01 | 2021-04-01 | Electromagnetic shielding cable structure with shielding electric connector for power supply |
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| CN (1) | CN113096879B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2747103A1 (en) * | 1977-10-20 | 1979-04-26 | Huengerle Kg Elektro App Fab | HV plug connector with flat cable insert - has contact element in screening cap recess, whose peripheral edge locks with recess bottom |
| CN101060217A (en) * | 2006-04-20 | 2007-10-24 | 贵州航天电器股份有限公司 | Electromagnetic shielded socket |
| CN108986971A (en) * | 2018-07-02 | 2018-12-11 | 上海微小卫星工程中心 | A kind of cable shield device |
| CN110010275A (en) * | 2019-04-30 | 2019-07-12 | 深圳市傲基电子商务股份有限公司 | High shielding wire rod, data line and method for manufacturing wire |
| KR102001176B1 (en) * | 2018-11-06 | 2019-07-17 | 신기영 | Far-infrared rads using graphene plates and heating wire of electromagnetic wave shield |
| CN211351209U (en) * | 2020-02-28 | 2020-08-25 | 安洁无线科技（苏州）有限公司 | Cable connector |
| CN112448238A (en) * | 2019-08-27 | 2021-03-05 | 泰连德国有限公司 | Connector shield with circumferential retention elements |
| CN213183660U (en) * | 2020-11-10 | 2021-05-11 | 苏州尚虹鑫电子科技有限公司 | Medical connector ultrasonic knife cable with shielding effect |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120168196A1 (en) * | 2011-01-04 | 2012-07-05 | Primecon Technology Ltd. | Coaxial cable structure |
| CN108662579B (en) * | 2018-04-19 | 2020-03-17 | 东方电气集团东方锅炉股份有限公司 | Structure for preventing pulverized coal leakage of cyclone burner |
| CN210535949U (en) * | 2019-08-08 | 2020-05-15 | 中山市大行电子科技有限公司 | HDMI connecting wire |
-
2021
- 2021-04-01 CN CN202110353337.0A patent/CN113096879B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2747103A1 (en) * | 1977-10-20 | 1979-04-26 | Huengerle Kg Elektro App Fab | HV plug connector with flat cable insert - has contact element in screening cap recess, whose peripheral edge locks with recess bottom |
| CN101060217A (en) * | 2006-04-20 | 2007-10-24 | 贵州航天电器股份有限公司 | Electromagnetic shielded socket |
| CN108986971A (en) * | 2018-07-02 | 2018-12-11 | 上海微小卫星工程中心 | A kind of cable shield device |
| KR102001176B1 (en) * | 2018-11-06 | 2019-07-17 | 신기영 | Far-infrared rads using graphene plates and heating wire of electromagnetic wave shield |
| CN110010275A (en) * | 2019-04-30 | 2019-07-12 | 深圳市傲基电子商务股份有限公司 | High shielding wire rod, data line and method for manufacturing wire |
| CN112448238A (en) * | 2019-08-27 | 2021-03-05 | 泰连德国有限公司 | Connector shield with circumferential retention elements |
| CN211351209U (en) * | 2020-02-28 | 2020-08-25 | 安洁无线科技（苏州）有限公司 | Cable connector |
| CN213183660U (en) * | 2020-11-10 | 2021-05-11 | 苏州尚虹鑫电子科技有限公司 | Medical connector ultrasonic knife cable with shielding effect |
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| CN113096879A (en) | 2021-07-09 |
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