CN220324164U - Self-supporting light-weight low-attenuation differential signal flat cable - Google Patents
Self-supporting light-weight low-attenuation differential signal flat cable Download PDFInfo
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- CN220324164U CN220324164U CN202321478352.9U CN202321478352U CN220324164U CN 220324164 U CN220324164 U CN 220324164U CN 202321478352 U CN202321478352 U CN 202321478352U CN 220324164 U CN220324164 U CN 220324164U
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- Prior art keywords
- differential signal
- composite resin
- plastic composite
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- flat cable
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- 239000000805 composite resin Substances 0.000 claims abstract description 46
- 229920003023 plastic Polymers 0.000 claims abstract description 40
- 239000004033 plastic Substances 0.000 claims abstract description 40
- 239000004020 conductor Substances 0.000 claims abstract description 25
- 239000012212 insulator Substances 0.000 claims abstract description 16
- 229920003225 polyurethane elastomer Polymers 0.000 claims abstract description 8
- 239000010410 layer Substances 0.000 claims description 64
- 229910052782 aluminium Inorganic materials 0.000 claims description 32
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 23
- 239000011347 resin Substances 0.000 claims description 17
- 229920005989 resin Polymers 0.000 claims description 17
- 239000011888 foil Substances 0.000 claims description 9
- 229910001220 stainless steel Inorganic materials 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 229920006231 aramid fiber Polymers 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 238000005253 cladding Methods 0.000 claims description 4
- 239000012790 adhesive layer Substances 0.000 claims description 3
- 239000004519 grease Substances 0.000 claims description 3
- 230000001050 lubricating effect Effects 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 239000005030 aluminium foil Substances 0.000 claims 1
- 230000008054 signal transmission Effects 0.000 description 5
- 239000004411 aluminium Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003733 fiber-reinforced composite Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model discloses a self-supporting light-weight low-attenuation differential signal flat cable, which comprises flat differential signal wire cores and bearing stranded wires which are arranged at intervals and are jointly coated in a polyurethane elastomer outer sheath, wherein each differential signal wire core comprises two coaxial wire cores which are arranged side by side to form a wire core body, each coaxial wire core comprises an inner conductor and a PFA hollow insulator, the outer part of each wire core body is sequentially coated with an aluminum-plastic composite resin inner wrapping shielding layer and an aluminum-plastic composite resin outer wrapping shielding layer, and the thickness of each aluminum-plastic composite resin inner wrapping shielding layer is smaller than one half of that of each aluminum-plastic composite resin outer wrapping shielding layer. The cable ensures stable noise shielding performance on the basis of small-diameter lightweight preparation, and has low signal attenuation and durable use.
Description
Technical Field
The utility model relates to the technical field of cables, in particular to a self-supporting lightweight low-attenuation differential signal flat cable.
Background
The signal conductors of a differential signal shielded cable are typically arranged in pairs to carry differential signals. However, due to the complexity of the overhead installation environment, the installation and laying of self-supporting differential signal cables requires good self-carrying capacity. Moreover, the cable is limited by complex environmental conditions, is easy to suffer from external signal interference, and most of shielding layers of differential signal cables adopt copper wire braided shielding layers, are connected and conducted by adding a grounding wire and the copper wire braided shielding layers, and have poor balanced stability of a cable core structure, and are easy to cause degradation of attenuation performance, so that the signal transmission rate and the stable performance of signal transmission are influenced. Therefore, it is one of the main problems at present to develop an economical differential signal cable with light weight and low attenuation, which is required for designing a lightweight cable.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model aims to provide the self-supporting light-weight low-attenuation differential signal flat cable which ensures stable noise shielding performance, low signal attenuation and durable use on the basis of small-diameter light-weight preparation.
The utility model solves the technical problems through the following technical proposal.
The utility model provides a self-supporting lightweight low attenuation differential signal flat cable, includes the platykurtic differential signal core of interval arrangement and bears the weight of the stranded conductor and cladding jointly in polyurethane elastomer oversheath, polyurethane elastomer oversheath is in differential signal core with bear and be formed with slim connecting rib on the interval section between the stranded conductor, differential signal core includes two coaxial sinle silk and arranges side by side and form the sinle silk body, coaxial sinle silk includes inner conductor and PFA hollow insulator, PFA hollow insulator external diameter is 0.45mm to 1mm, the sinle silk body outside is outside cladding plastic-aluminum composite resin inner wrapping shielding layer and plastic-aluminum composite resin outer wrapping shielding layer in proper order, the plastic-aluminum composite resin inner wrapping shielding layer is first plastic-aluminum composite resin band gap around the package structure, first plastic-aluminum composite resin band is by built-in outside including first PET resin basic unit, first aluminium plastic composite resin layer and EVA adhesive layer in proper order, the plastic-aluminum composite resin outer wrapping shielding layer is second aluminium plastic composite resin band lid around the package structure, the plastic-aluminum composite resin band is by built-in outside including second aluminium plastic composite resin layer and second aluminium plastic composite resin layer thickness is around the plastic base layer, the plastic composite resin layer is small in thickness around the plastic composite resin layer.
Preferably, the first PET resin base layer has a thickness of 5 μm to 12 μm, the first aluminum foil layer has a thickness of 10 μm to 20 μm, and the EVA adhesive layer has a thickness of 3 μm to 8 μm.
Preferably, the second aluminum foil layer has a thickness of 30 μm to 50 μm and the second PET resin base layer has a thickness of 15 μm to 30 μm.
Preferably, the inner conductor is formed by twisting a plurality of tinned copper monofilaments, and the wire diameter of each tinned copper monofilament is 0.01mm to 0.04mm.
Preferably, the inner conductor lay length is five to fifteen times the inner conductor diameter.
Preferably, the bearing stranded wire is formed by jointly stranding a plurality of stainless steel wires and a plurality of aramid fiber stranded wires, and the diameter of the aramid fiber stranded wires is not more than 70% of the diameter of the stainless steel wires.
Preferably, the stainless steel wire has a wire diameter of 0.05mm to 0.1mm.
Preferably, insulating lubricating silicone grease is filled between the inner conductor and the PFA hollow insulator.
Preferably, the PFA hollow insulator comprises an inner cylinder body and an outer cylinder body, a plurality of connecting plate bodies are radially and uniformly distributed between the inner cylinder body and the outer cylinder body, and the inner conductor is sleeved inside the inner cylinder body.
Preferably, the first PET resin base layer thickness is less than one half of the second PET resin base layer thickness.
The beneficial effects of the utility model are as follows:
1. the PFA hollow insulator is coated outside the inner conductor of the coaxial wire core, the outer diameter of the PFA hollow insulator is controlled to be 0.45-1 mm, the preparation of a lightweight structure is met, the lateral pressure during bending can be borne, the flexibility and the tensile resistance of the wire core are improved, the wire breakage of the wire core is prevented, the conductivity of the PFA resin is low, the high-frequency signal transmission characteristic is improved, the attenuation is small, and the fiber reinforced composite wire is durable in use.
2. The inner and outer shielding layers of the aluminum-plastic composite resin jointly form a shielding conductor, the inner shielding layer of the aluminum-plastic composite resin adopts a gap for wrapping, the outer shielding layer of the aluminum-plastic composite resin adopts a lap cover for wrapping, the thickness of the inner shielding layer of the aluminum-plastic composite resin is smaller than one half of the thickness of the outer shielding layer of the aluminum-plastic composite resin, the material consumption of the aluminum-plastic composite resin is reduced on the basis of guaranteeing the structural thickness of the shielding layer, the preparation of small diameter and light weight is realized, the aluminum foil layers of the inner and outer layers are firmly bonded into a whole through the EVA bonding layer, the full contact is guaranteed, the friction is reduced, the signal attenuation is low, the differential signal transmission rate and the signal transmission stability are guaranteed, and the aluminum-plastic composite resin is more durable to apply.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic cross-sectional view of an embodiment of the present utility model.
In the figure: the cable comprises a 1-differential signal wire core, a 2-bearing stranded wire, a 3-polyurethane elastomer outer sheath, a 4-thin connecting rib, a 5-coaxial wire core, a 6-inner conductor, a 7-PFA hollow insulator, an 8-aluminum plastic composite resin inner wrapping shielding layer and a 9-aluminum plastic composite resin outer wrapping shielding layer.
Description of the embodiments
In order to more clearly illustrate the present utility model, the present utility model will be further described with reference to preferred embodiments and the accompanying drawings. Like parts in the drawings are denoted by the same reference numerals. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and that this utility model is not limited to the details given herein.
Referring to fig. 1, the self-supporting lightweight low-attenuation differential signal flat cable of the embodiment of the utility model comprises flat differential signal wire cores 1 and bearing strands 2 which are arranged at intervals and are jointly coated in a polyurethane elastomer outer sheath 3, wherein the polyurethane elastomer outer sheath 3 is provided with thin connecting ribs 4 on a spacing section between the differential signal wire cores 1 and the bearing strands 2, specifically, the bearing strands 2 are formed by jointly twisting a plurality of stainless steel wires and a plurality of aramid fiber twisted wires, and the diameter of the aramid fiber twisted wires is not more than 70% of that of the stainless steel wires. Further, the stainless steel wire has a wire diameter of 0.05mm to 0.1mm.
The differential signal wire core 1 comprises two coaxial wire cores 5 which are arranged side by side to form a wire core body, wherein the coaxial wire cores 5 comprise an inner conductor 6 and a PFA hollow insulator 7, the outer diameter of the PFA hollow insulator 7 is 0.45-1 mm, and further insulating lubricating silicone grease is filled between the inner conductor 6 and the PFA hollow insulator 7. Specifically, the inner conductor 6 is formed by twisting a plurality of tin-plated copper monofilaments, the wire diameter of the tin-plated copper monofilaments is 0.01mm to 0.04mm, and further, the twisting distance of the inner conductor 6 is five to fifteen times of the diameter of the inner conductor 6. The PFA hollow insulator 7 comprises an inner cylinder body and an outer cylinder body, a plurality of connecting plate bodies are radially and uniformly distributed between the inner cylinder body and the outer cylinder body, and the inner conductor 6 is sleeved inside the inner cylinder body.
The outside of the wire core body is sequentially coated with an aluminum-plastic composite resin inner wrapping shielding layer 8 and an aluminum-plastic composite resin outer wrapping shielding layer 9. The aluminum-plastic composite resin inner wrapping shielding layer 8 is of a first aluminum-plastic composite resin band gap wrapping structure, the first aluminum-plastic composite resin band sequentially comprises a first PET resin base layer, a first aluminum foil layer and an EVA bonding layer from inside to outside, specifically speaking, the thickness of the first PET resin base layer is 5-12 mu m, the thickness of the first aluminum foil layer is 10-20 mu m, and the thickness of the EVA bonding layer is 3-8 mu m. The aluminum-plastic composite resin outer wrapping shielding layer 9 is of a second aluminum-plastic composite resin tape covering wrapping structure, the second aluminum-plastic composite resin tape sequentially comprises a second aluminum foil layer and a second PET resin base layer from inside to outside, specifically speaking, the thickness of the second aluminum foil layer is 30-50 μm, the thickness of the second PET resin base layer is 15-30 μm, and further, the thickness of the first PET resin base layer is smaller than half of the thickness of the second PET resin base layer. The thickness of the aluminum-plastic composite resin inner wrapping shielding layer 8 is smaller than one half of the thickness of the aluminum-plastic composite resin outer wrapping shielding layer 9.
It should be understood that the foregoing examples of the present utility model are provided merely for clearly illustrating the present utility model and are not intended to limit the embodiments of the present utility model, and that various other changes and modifications may be made therein by one skilled in the art without departing from the spirit and scope of the present utility model as defined by the appended claims.
Claims (10)
1. Self-supporting light-weight low-attenuation differential signal flat cable, characterized by: including platykurtic differential signal core (1) and the bearing strand wires (2) of interval arrangement and cladding jointly in polyurethane elastomer oversheath (3), polyurethane elastomer oversheath (3) are in differential signal core (1) with be formed with slim joint bar (4) on the interval section between bearing strand wires (2), differential signal core (1) include two coaxial sinle silk (5) and arrange side by side and form the sinle silk body, coaxial sinle silk (5) include inner conductor (6) and PFA hollow insulator (7), PFA hollow insulator (7) external diameter is 0.45mm to 1mm, around package shielding layer (8) and aluminum plastic composite resin outside package shielding layer (9) in proper order cladding aluminum plastic composite resin in the sinle silk body outside, around package shielding layer (8) for first aluminum plastic composite resin area clearance around package structure in the aluminum plastic composite resin, first aluminum plastic composite resin area includes first PET resin basic unit, first aluminium foil layer and EVA bonding layer side by side, aluminum plastic composite resin outside package shielding layer (9) are for second aluminum plastic composite resin outside package shielding layer (8) and second aluminum plastic composite resin outside package layer (9) in proper order, and second aluminum plastic composite resin outside package shielding layer (8) thickness around the second aluminum plastic composite resin outside layer (9) in proper order.
2. The self-supporting lightweight low attenuation differential signal flat cable of claim 1, characterized by: the first PET resin base layer has a thickness of 5 to 12 [ mu ] m, the first aluminum foil layer has a thickness of 10 to 20 [ mu ] m, and the EVA adhesive layer has a thickness of 3 to 8 [ mu ] m.
3. The self-supporting lightweight low attenuation differential signal flat cable of claim 1, characterized by: the second aluminum foil layer has a thickness of 30 μm to 50 μm and the second PET resin base layer has a thickness of 15 μm to 30 μm.
4. The self-supporting lightweight low attenuation differential signal flat cable of claim 1, characterized by: the inner conductor (6) is formed by twisting a plurality of tinned copper monofilaments, and the wire diameter of each tinned copper monofilament is 0.01-0.04 mm.
5. The self-supporting lightweight low attenuation differential signal flat cable according to claim 4, wherein: the inner conductor (6) has a lay length of five to fifteen times the diameter of the inner conductor (6).
6. The self-supporting lightweight low attenuation differential signal flat cable of claim 1, characterized by: the bearing stranded wires (2) are formed by jointly stranding a plurality of stainless steel wires and a plurality of aramid fiber twisted wires, and the diameter of the aramid fiber twisted wires is not more than 70% of the diameter of the stainless steel wires.
7. The self-supporting lightweight low attenuation differential signal flat cable according to claim 6, wherein: the diameter of the stainless steel wire is 0.05mm to 0.1mm.
8. The self-supporting lightweight low attenuation differential signal flat cable of claim 1, characterized by: and insulating lubricating silicone grease is filled between the inner conductor (6) and the PFA hollow insulator (7).
9. The self-supporting lightweight low attenuation differential signal flat cable of claim 1, characterized by: the PFA hollow insulator (7) comprises an inner cylinder body and an outer cylinder body, a plurality of connecting plate bodies are radially and uniformly distributed between the inner cylinder body and the outer cylinder body, and the inner conductor (6) is sleeved inside the inner cylinder body.
10. The self-supporting lightweight low attenuation differential signal flat cable of claim 1, characterized by: the first PET resin base layer thickness is less than one half of the second PET resin base layer thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321478352.9U CN220324164U (en) | 2023-06-12 | 2023-06-12 | Self-supporting light-weight low-attenuation differential signal flat cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321478352.9U CN220324164U (en) | 2023-06-12 | 2023-06-12 | Self-supporting light-weight low-attenuation differential signal flat cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220324164U true CN220324164U (en) | 2024-01-09 |
Family
ID=89426482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321478352.9U Active CN220324164U (en) | 2023-06-12 | 2023-06-12 | Self-supporting light-weight low-attenuation differential signal flat cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220324164U (en) |
-
2023
- 2023-06-12 CN CN202321478352.9U patent/CN220324164U/en active Active
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