CN105513686A - Anti-interference three-layer flat shielding cable - Google Patents
Anti-interference three-layer flat shielding cable Download PDFInfo
- Publication number
- CN105513686A CN105513686A CN201610058409.8A CN201610058409A CN105513686A CN 105513686 A CN105513686 A CN 105513686A CN 201610058409 A CN201610058409 A CN 201610058409A CN 105513686 A CN105513686 A CN 105513686A
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- Prior art keywords
- layer
- interference
- conductive layer
- cable
- conductor
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Classifications
-
- 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
- H01B7/08—Flat or ribbon cables
- H01B7/0861—Flat or ribbon cables comprising one or more screens
-
- 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
- H01B7/08—Flat or ribbon cables
- H01B7/0869—Flat or ribbon cables comprising one or more armouring, tensile- or compression-resistant elements
-
- 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
-
- 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
- H01B7/1895—Internal space filling-up means
Abstract
The invention discloses an anti-interference three-layer flat shielding cable which comprises a base material, adhesive for connecting two separation materials, a conductor for transmitting electric signals, an inner insulating layer for isolating the conductor, a shielding layer for shielding radiated interference and an outer insulating layer arranged on the outermost layer in a wrapping mode. The conductor sequentially comprises a first conducting layer, a second conducting layer and a third conducting layer from top to bottom, wherein cross sections of the first conducting layer, the second conducting layer and the third conducting layer are in a sheet shape, the first conducting layer is connected with the shielding layer, and the third conducting layer is connected with the inner insulating layer. According to the anti-interference three-layer flat shielding cable, through equivalent capacitance formed among the three layers of the conductor, the anti-interference technical effect is achieved, through FPC imitation structural design, cable flattening is achieved in real sense, and meanwhile the outer insulating layer isolates an electric wire, so that people are prevented from being injured by electric shock, the shielding layer shields radiated interference, and tension resistance is achieved through a reinforcing component, so that the cable can be smaller in size, smaller in thickness and higher in anti-interference capacity and shielding capacity compared with an existing flat cable.
Description
Technical field
The present invention relates to electric wire field, particularly relate to a kind of anti-interference three layers of flat screened cable.
Background technology
Cable is formed by several or several groups of wire strandings, and often organize mutually insulated between wire, and be often twisted into round a center, whole outside is surrounded by the cover layer of high-insulation, makes cable have the feature of interior energising, external insulation.
In the middle of routine use, we often can use three and plug in power line, its three plugs connect live wire L, zero line N and ground wire PE respectively, zero line thinks the center line of three-phase electricity, interference between zero line and live wire is called " differential mode interference ", " differential mode interference " also refers to the interference voltage acted between signal anode and negative terminal, and this interference is carried on useful signal, directly affects the precision of Measurement & Control; Interference between live wire and ground wire is called " common mode disturbances ", this is owing to there is potential difference between cable and the earth, make cable has common mode current, if equipment produces common mode current on its cable, cable can produce strong electromagnetic radiation, electromagnetic interference is produced to electronics, electric product components and parts, affects the performance index of product; In order to avoid the impact of " differential mode interference " and " common mode disturbances ", people need to increase some designs and suppress " differential mode interference " and " common mode disturbances ", such as shunt capacitance or application differential mode inductance or add electromagnetic interface filter at the electric power incoming line place of equipment on circuit, but this type of design is difficult to when small product size is restricted realize.
Simultaneously, such as generate electricity, metallurgical, chemical industry, under the adverse circumstances such as harbour, between mobile appliance equipment, electrical equipment connects the flat cable often adopted, it is relative to the cable of circular configuration, be easy to install, potential safety hazard is less, but the structure of many wires in flat cable or the parallel placement of cable, cable information easily occurred each other in the process used is disturbed, be directed to this kind of situation, patent announcement number is the jamming-proof flat cable of one of CN204066795U, by being provided with hollow channel between the cable inner core of flat cable inside, the signal disturbing between the cable inner core in signals transmission is reduced by the air in hollow channel, thus make Signal transmissions more accurately clear, but the jamproof effect of this invention is very limited, can only resisting radiation interference, conducted interference cannot be prevented, and add hollow channel, namely add the width of cable, this flat cable is not suitable in narrow space.
Therefore, the stronger and flat cable that thickness is thinner of a kind of antijamming capability is necessary to design.
Summary of the invention
The present invention provides a kind of anti-interference three layers of flat screened cable for solving the problem, by the first conductive layer, the equivalent capacity formed between second conductive layer and the 3rd conductive layer, achieve the technique effect of anti-conducted interference, the structural design of imitative FPC, the thickness of cable is made to enter micron dimension, achieve cable flattening truly, prevent people from getting an electric shock by external insulation layer isolation electric wire injured simultaneously, disturbed by screen radiation-screening, tension is realized by strengthening part, make this cable compared to flat cable in the past, volume is less, thickness is thinner, antijamming capability and screening ability stronger.
For achieving the above object, reach above-mentioned effect, the present invention is achieved through the following technical solutions:
A kind of anti-interference three layers of flat screened cable, the anti-interference three layers of flat screened cable of described one comprise: base material, connect the adhesive of two kinds of parting materials, be used for the conductor of transmission of electric signals, the inner insulating layer of insulated conductor, radiation-screening interference screen and be wrapped in outermost external insulation layer, it is laminar first conductive layer that described conductor comprises cross section from top to bottom successively, second conductive layer and the 3rd conductive layer, the first described conductive layer, second conductive layer and the 3rd conductive layer are parallel to each other, the first described conductive layer is connected with screen, the 3rd described conductive layer is connected with inner insulating layer.
Further, the width of described conductor is less than the width of base material and adhesive.
Further, described inner insulating layer is reinforced insulation layer, described reinforced insulation layer is by adhesive coverage at the 3rd conductive layer outside, and the width of described reinforced insulation layer is greater than the width of the 3rd conductive layer, and what it exceeded the 3rd conductive layer has been partially filled adhesive.
Further, the position of the first described conductive layer and the 3rd conductive layer can exchange.
Further, the strengthening part that strengthening core is entwined is provided with in described external insulation layer.
Further, described conductor is the Copper Foil of less than 175 μm or silver foil or silver-plated Copper Foil or zinc-plated Copper Foil.
Further, described screen is Copper Foil or aluminium foil or proof copper-wire braided layer or Copper Foil superposition proof copper-wire braided layer or aluminium foil superposition proof copper-wire braided layer.
The invention has the beneficial effects as follows:
A kind of anti-interference three layers of flat screened cable, the stacked structure copying FPC replaces traditional circular configuration, the thickness of cable is made to enter micron dimension, achieve cable flattening truly, simultaneously when cross-sectional area is the same, flake conductor is larger than the surface area of cylindrical conductor, and its heat-sinking capability significantly improves, and makes this cable safer; Three layers of conductor parallel construction is each other equivalent to multiple electric capacity, if be applied in power line, the Y capacitance of formation can suppress common mode disturbances, and the X electric capacity of formation can suppress differential mode interference, achieves the technique effect of anti-conducted interference; Prevent people from getting an electric shock by external insulation layer isolation electric wire injured simultaneously, the interference between screen and conductor is prevented by inner insulating layer, disturbed by screen radiation-screening, realize tension by strengthening part and base material, reach withstand voltage standard by base material, make this cable compared to flat cable in the past, volume is less, thickness is thinner, and antijamming capability is stronger, be suitable for high to space requirement, high to equipment precision requirement, antijamming capability and the high user of screening ability requirement are used.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to technological means of the present invention can be better understood, and can be implemented according to the content of specification, coordinate accompanying drawing to describe in detail with preferred embodiment of the present invention below, the specific embodiment of the present invention provides in detail by following examples and accompanying drawing thereof.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the cross sectional representation of first embodiment of the invention;
Fig. 2 is the equivalent circuit diagram in first embodiment of the invention;
Fig. 3 is the sample table of the selection of material parameter and electrical quantity in first embodiment of the invention;
Fig. 4 is the sample table of the selection of material parameter and thickness in first embodiment of the invention;
Fig. 5 is the cross sectional representation of second embodiment of the invention.
Wherein, external insulation layer 1, conductor 2, first conductive layer 21, second conductive layer 22, the 3rd conductive layer 23, base material 3, adhesive 4, inner insulating layer 5, strengthening part 6, screen 7, C
1-C
2it is equivalent capacity.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail:
As Figure 1-Figure 5, a kind of anti-interference three layers of flat screened cable, the anti-interference three layers of flat screened cable of described one comprise: base material 3, connect the adhesive 4 of two kinds of parting materials, be used for the conductor 2 of transmission of electric signals, the inner insulating layer 5 of insulated conductor 2, radiation-screening interference screen 7 and be wrapped in outermost external insulation layer 1, it is laminar first conductive layer 21 that described conductor 2 comprises cross section from top to bottom successively, second conductive layer 22 and the 3rd conductive layer 23, the first described conductive layer 21, second conductive layer 22 and the 3rd conductive layer 23 are parallel to each other, the first described conductive layer 21 is connected with screen 7, the 3rd described conductive layer 23 is connected with inner insulating layer 5.
Further, the width of described conductor 2 is less than the width of base material 3 and adhesive 4.
Further, described inner insulating layer 5 is reinforced insulation layer, described reinforced insulation layer covers outside the 3rd conductive layer 23 by adhesive 4, and the width of described reinforced insulation layer is greater than the width of the 3rd conductive layer 23, and what it exceeded the 3rd conductive layer 23 has been partially filled adhesive 4.
Further, the first described conductive layer 21 and the position of the 3rd conductive layer 23 can exchange.
Further, the strengthening part 6 that strengthening core is entwined is provided with in described external insulation layer 1.
Further, described conductor 2 is the Copper Foil of less than 175 μm or silver foil or silver-plated Copper Foil or zinc-plated Copper Foil.
Further, described screen 7 is Copper Foil or aluminium foil or proof copper-wire braided layer or Copper Foil superposition proof copper-wire braided layer or aluminium foil superposition proof copper-wire braided layer.
Specific embodiment
The cross section of first embodiment of the invention as shown in Figure 1, because this flat cable is too elongated, therefore adopt tilde to omit the mid portion of same structure, the figure on tilde both sides is respectively the two ends of this flat cable, wherein, structure is from top to bottom: external insulation layer 1, screen 7, first conductive layer 21, adhesive 4, base material 3, adhesive 4, second conductive layer 22, adhesive 4, base material 3, adhesive 4, 3rd conductive layer 23, inner insulating layer 5, screen 7 and external insulation layer 1, first conductive layer 21, second conductive layer 22, 3rd conductive layer 23 is parallel to each other, and width is all less than the width of base material 3 and adhesive 4, simultaneously, this external insulation layer 1 adopts PVC plastic, conductor 2 adopts Copper Foil, base material 3 adopts PI plastic material, screen 7 adopts aluminium foil, inner insulating layer 5 adopts reinforced insulation layer, reinforced insulation layer comprises adhesive 4 and insulating material, is namely connected with insulating material in the outside of the 3rd conductive layer 23 by adhesive 4, and insulating material uses PI plastic material, the vacancy of its both sides is also filled with adhesive 4, isolates with screen 7.
When using as power line, because the first conductive layer 21 is connected with screen 7, therefore just the first conductive layer 21 earth connection PE, its equivalent circuit diagram as shown in Figure 2, wherein equivalent capacity C
1for Y capacitance, equivalent capacity C
2for X electric capacity, because the first conductive layer 21, second conductive layer 22, the 3rd conductive layer 23 are parallel to each other, so equivalent capacity C
1-C
2be plane-parallel capacitor, therefore capacitance is C=ε S/D=ε
oε
rs/D, wherein ε is the dielectric constant of medium between pole plate, ε
ofor vacuum absolute dielectric constant, ε
rfor relative dielectric constant, S is polar plate area, and D is the distance between pole plate, in this embodiment, ε is the dielectric constant of medium between adjacent conductor 2, and S is the area of the first conductive layer 21 or the second conductive layer 22 or the 3rd conductive layer 23, and D is the distance between adjacent conductor 2.
As shown in Figure 3, wherein vacuum absolute dielectric constant ε
o=8.854187817 × 10
-12f/m, base material 3 gets ε with the relative dielectric constant of adhesive 4
r=3, the parameter of adhesive 4 be two layers of adhesive 4 and value, equivalent capacity C
1-C
2capacitance consistent, wherein equivalent capacity C
1for Y capacitance, equivalent capacity C
2for X electric capacity, so have the effect of anti-common mode disturbances and anti-differential mode interference; Base material 3 adopts PI plastic material, and its withstand voltage radix is 275KV/mm, because withstand voltage is main relevant to base material 3, therefore meets different cable voltage standards by the thickness changing base material 3.
As shown in Figure 4, the copper thickness specification that current conductor 2 uses has 17.5 μm, 35 μm, 70 μm three kinds, base material 3 has 12.5 μm, 25 μm, 50 μm, 75 μm, 125 μm five kinds, 4, adhesive is between 12.5 μm ~ 100 μm, so when adopting the first embodiment, do not comprising inner insulating layer 5, screen 7 and external insulation layer 1 when, its thickness specification is between 127.5 μm ~ 860 μm, wherein, sequence number conventional in the market 1., 2. the thickness of two kinds of structures is respectively 127.5 μm, 235 μm, its thickness is less than the cable inner core thickness of current circular configuration.
The first embodiment that composition graphs 1-Fig. 4 obtains, this flat cable has the character of thickness much smaller than width, and round cable thickness and width are diameter R, when the sectional area of two kinds of cables is consistent, its impedance is consistent, when by same current, the heat that its cable produces is consistent, now, the width of flat cable is greater than the width of round cable, therefore the area of dissipation of flat cable is greater than the area of dissipation of round cable, so when cross-sectional area is the same, flat cable is relative to round cable, its heat-sinking capability is stronger, by electric current higher, thus make the use of cable safer.
The cross section of second embodiment of the invention as shown in Figure 5, on the basis of the first embodiment, the strengthening part 6 that many strengthening cores are entwined is provided with in external insulation layer 1, this strengthening part 6 has eight, up and down each four evenly distributed, strengthening part 6 for being filled in external insulation layer 1, therefore does not increase integral thickness, with the consistency of thickness of the first embodiment.
The above, be only preferred embodiment of the present invention, not does any pro forma restriction to the present invention; The those of ordinary skill of all industry all can shown in by specification accompanying drawing and the above and implement the present invention swimmingly; But all those skilled in the art are not departing within the scope of technical solution of the present invention, utilize disclosed above technology contents and make a little change, modify with differentiation equivalent variations, be Equivalent embodiments of the present invention; Meanwhile, all according to substantial technological of the present invention to the change of any equivalent variations that above embodiment is done, modify and differentiation etc., within the protection range all still belonging to technical scheme of the present invention.
Claims (7)
1. anti-interference three layers of flat screened cable, it is characterized in that: the anti-interference three layers of flat screened cable of described one comprise: base material (3), connect the adhesive (4) of two kinds of parting materials, be used for the conductor (2) of transmission of electric signals, the inner insulating layer (5) of insulated conductor (2), radiation-screening interference screen (7) and be wrapped in outermost external insulation layer (1), it is laminar first conductive layer (21) that described conductor (2) comprises cross section from top to bottom successively, second conductive layer (22) and the 3rd conductive layer (23), described the first conductive layer (21), second conductive layer (22) and the 3rd conductive layer (23) are parallel to each other, described the first conductive layer (21) is connected with screen (7), the 3rd described conductive layer (23) is connected with inner insulating layer (5).
2. the anti-interference three layers of flat screened cable of one according to claim 1, is characterized in that: the width of described conductor (2) is less than the width of base material (3) and adhesive (4).
3. the anti-interference three layers of flat screened cable of one according to claim 1, it is characterized in that: described inner insulating layer (5) is reinforced insulation layer, described reinforced insulation layer covers the 3rd conductive layer (23) outside by adhesive (4), the width of described reinforced insulation layer is greater than the width of the 3rd conductive layer (23), and what it exceeded the 3rd conductive layer (23) has been partially filled adhesive (4).
4. the anti-interference three layers of flat screened cable of one according to claim 1, is characterized in that: described the first conductive layer (21) can exchange with the position of the 3rd conductive layer (23).
5. the anti-interference three layers of flat screened cable of one according to claim 1, is characterized in that: be provided with the strengthening part (6) that strengthening core is entwined in described external insulation layer (1).
6. the anti-interference three layers of flat screened cable of one according to claim 1, is characterized in that: described conductor (2) is the Copper Foil of less than 175 μm or silver foil or silver-plated Copper Foil or zinc-plated Copper Foil.
7. the anti-interference three layers of flat screened cable of one according to claim 1, is characterized in that: described screen (7) is for Copper Foil or aluminium foil or proof copper-wire braided layer or Copper Foil superposes proof copper-wire braided layer or aluminium foil superposes proof copper-wire braided layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610058409.8A CN105513686A (en) | 2016-01-28 | 2016-01-28 | Anti-interference three-layer flat shielding cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610058409.8A CN105513686A (en) | 2016-01-28 | 2016-01-28 | Anti-interference three-layer flat shielding cable |
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| CN105513686A true CN105513686A (en) | 2016-04-20 |
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| CN201610058409.8A Pending CN105513686A (en) | 2016-01-28 | 2016-01-28 | Anti-interference three-layer flat shielding cable |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107644699A (en) * | 2017-10-25 | 2018-01-30 | 苏州科伦特电源科技有限公司 | Strip conductor formula busbar structure for high current transmission and preparation method thereof |
| CN108231251A (en) * | 2018-01-05 | 2018-06-29 | 四川大学 | A kind of conducting wire |
| CN108231252A (en) * | 2018-01-16 | 2018-06-29 | 四川大学 | A kind of conducting wire |
| WO2020156122A1 (en) * | 2019-01-30 | 2020-08-06 | 张念鲁 | Conductor capable of achieving superconductivity at room temperature |
| CN113517084A (en) * | 2021-09-14 | 2021-10-19 | 珠海市联电科技有限公司 | Direct-current high-voltage blocker type cable and direct-current high-voltage trial delivery test system |
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|---|---|---|---|---|
| US6225563B1 (en) * | 1999-04-12 | 2001-05-01 | Peder U. Poulsen | Audio signal interconnect cable |
| CN101681696A (en) * | 2007-06-13 | 2010-03-24 | 自动电缆管理有限责任公司 | Motor vehicle power cable |
| CN203038681U (en) * | 2012-11-02 | 2013-07-03 | 中国电子科技集团公司第二十三研究所 | Low-inductance flat cable |
| CN204066795U (en) * | 2014-09-27 | 2014-12-31 | 沈健龙 | A kind of jamming-proof flat cable |
-
2016
- 2016-01-28 CN CN201610058409.8A patent/CN105513686A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6225563B1 (en) * | 1999-04-12 | 2001-05-01 | Peder U. Poulsen | Audio signal interconnect cable |
| CN101681696A (en) * | 2007-06-13 | 2010-03-24 | 自动电缆管理有限责任公司 | Motor vehicle power cable |
| CN203038681U (en) * | 2012-11-02 | 2013-07-03 | 中国电子科技集团公司第二十三研究所 | Low-inductance flat cable |
| CN204066795U (en) * | 2014-09-27 | 2014-12-31 | 沈健龙 | A kind of jamming-proof flat cable |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107644699A (en) * | 2017-10-25 | 2018-01-30 | 苏州科伦特电源科技有限公司 | Strip conductor formula busbar structure for high current transmission and preparation method thereof |
| CN108231251A (en) * | 2018-01-05 | 2018-06-29 | 四川大学 | A kind of conducting wire |
| CN108231252A (en) * | 2018-01-16 | 2018-06-29 | 四川大学 | A kind of conducting wire |
| WO2020156122A1 (en) * | 2019-01-30 | 2020-08-06 | 张念鲁 | Conductor capable of achieving superconductivity at room temperature |
| CN113517084A (en) * | 2021-09-14 | 2021-10-19 | 珠海市联电科技有限公司 | Direct-current high-voltage blocker type cable and direct-current high-voltage trial delivery test system |
| CN113517084B (en) * | 2021-09-14 | 2021-11-23 | 珠海市联电科技有限公司 | Direct-current high-voltage blocker type cable and direct-current high-voltage trial delivery test system |
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Application publication date: 20160420 |