CN214226578U - Multi-core communication cable with differential signal wire core - Google Patents
Multi-core communication cable with differential signal wire core Download PDFInfo
- Publication number
- CN214226578U CN214226578U CN202120437812.8U CN202120437812U CN214226578U CN 214226578 U CN214226578 U CN 214226578U CN 202120437812 U CN202120437812 U CN 202120437812U CN 214226578 U CN214226578 U CN 214226578U
- Authority
- CN
- China
- Prior art keywords
- core
- differential signal
- layer
- wire
- sinle silk
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Communication Cables (AREA)
- Insulated Conductors (AREA)
Abstract
The utility model discloses a take multicore communication cable of differential signal sinle silk, including two power sinle silks, six pair twist control sinle silks constitute the cable core around an oval differential signal sinle silk and jointly with PFA resin packing core transposition, power sinle silk's external diameter is greater than the minor axis of differential signal sinle silk and is less than the major axis of differential signal sinle silk, pair twist control sinle silk external diameter is less than the minor axis of differential signal sinle silk, the outside secondary cladding polyester fiber plain weave of cable core is around the covering, shielding mesh conductor layer and polyurethane oversheath, the differential signal sinle silk includes that two first inner conductors and common cladding are in the foaming polyethylene insulating layer, foaming polyethylene insulating layer outside is around having copper-plastic composite tape around covering and ETFE resin tape around the covering antifriction layer in proper order. The cable effectively bears lateral pressure under a bending extrusion state, improves the structural stability of the cable core, improves the low-voltage differential signal transmission rate and the signal transmission stability, reduces the occurrence of core breaking and wire breaking, and has better electrical characteristics.
Description
Technical Field
The utility model relates to the technical field of cables, especially, relate to a take multicore communication cable of difference signal sinle silk.
Background
Electromagnetic noise environments tend to be quite complex in industrial applications, and the radiation or conduction (EMI) of electromagnetic noise can significantly interfere with the proper operation of the equipment. In this process, an important carrier for electromagnetic noise propagation is various cables used in production line equipment. Some of them are noise sources and some are disturbed objects. One very important way to combat electromagnetic noise interference on electrical lines is to use shielded cables. Shielded electrical cables are used in high speed data transmission applications involving electromagnetic interference (EMI) and/or Radio Frequency Interference (RFI). Electrical signals routed through shielded electrical cables may radiate less EMI/RFI to the external environment than electrical signals routed through unshielded electrical cables. Electrical signals transmitted through shielded cables may be better protected from environmental EMI/RFI than signals through unshielded cables. The signal conductors of shielded cables are typically arranged in pairs to carry differential signals. However, in a general multi-core shielded cable, all the control wire cores, the power wire cores and the like are twisted together in the cable core, and the cable core is loose in structure and can deform when being extruded and bent, so that the structure of the low-voltage differential signal wire core is unstable, and the characteristic impedance matching, the return loss and the attenuation performance of the low-voltage differential signal wire core can be deteriorated, so that the signal transmission rate and the stability of the signal transmission are affected, the electrical characteristics of the cable are affected, and potential hazards of safe operation of the system exist.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to prior art not enough, the technical problem that solve provides a take multicore communication cable of difference signal sinle silk, can effectually bear the lateral pressure under the crooked extrusion state, improves cable core structural stability, keeps the normal circular cross section of cable, improves low pressure difference signal transmission rate and signal transmission stability, reduces disconnected core disconnection and takes place, and electrical characteristic is better, durable use.
The utility model discloses a make above-mentioned technical problem solve through following technical scheme.
The multi-core communication cable with the differential signal wire cores comprises two power supply wire cores, six pair-twisted control wire cores, a PFA resin filling core material and a PFA resin filling core material, wherein the six pair-twisted control wire cores surround one oval differential signal wire core and are twisted together to form a cable core, one power supply wire core is arranged at intervals between every two adjacent pair-twisted control wire cores, the length-to-length axis ratio of the differential signal wire core is 1.25:1 to 1.5:1, the outer diameter of the power supply wire core is larger than the short axis of the differential signal wire core and smaller than the long axis of the differential signal wire core, the outer diameter of the pair-twisted control wire core is smaller than the short axis of the differential signal wire core, the cable core is sequentially coated with a polyester fiber plain weave wrapping layer, a shielding mesh conductor layer and a polyurethane outer sheath, the differential signal wire core comprises two first inner conductors which are arranged side by side and are jointly coated in a foamed polyethylene insulating layer, and the foamed polyethylene insulating layer is sequentially wrapped with a copper-plastic composite tape wrapping layer and an ETFE resin tape wrapping anti-friction layer.
Preferably, the pair-twisted control wire core comprises two pair-twisted wire cores and two polypropylene resin core rods, the wire core bodies are formed by jointly twisting the two pair-twisted wire cores and the two polypropylene resin core rods, the outer portions of the wire core bodies are wrapped with fluororesin insulation layers, the pair-twisted wire cores comprise second inner conductors, and the outer portions of the second inner conductors are sequentially wrapped with foamed fluororesin insulation layers, metal shielding layers and iron powder resin composite winding layers.
Preferably, the ratio of the outer diameters of the twisted pair core and the polypropylene resin core rod is 1.15:1 to 1.3: 1.
Preferably, the iron powder resin composite winding layer is of an iron powder polypropylene composite resin belt one-way spiral lapping and covering wrapping structure.
Preferably, the metal shielding layer is formed by two layers of tinned copper wires which are in reverse spiral winding weaving structures and have different spiral angles, and the spiral angles are 45-60 degrees.
Preferably, the power core includes the third inner conductor, the outside cladding in proper order of third inner conductor has foaming PFA insulating layer, copper wire to weave shielding layer and PFA resin tape around covering antifriction layer.
Preferably, the copper wire braided shielding layer is formed by spirally winding and braiding tin-plated copper foil wires and tin-plated copper monofilaments in opposite directions, and the spiral angles of the tin-plated copper foil wires and the tin-plated copper monofilaments are different.
Preferably, the copper-plastic composite tape wrapping layer is of a copper-plastic composite tape multilayer spiral lapping and covering wrapping structure, and the copper-plastic composite tape comprises a copper foil tape inner layer and a PET film outer layer.
Preferably, the shielding mesh conductor layer is formed by mixing and spirally winding two tinned copper wires with different wire diameters and a wire diameter ratio of 0.9-1.
Preferably, the polyester fiber plain cloth wrapping layer is of a polyester fiber plain cloth spiral wrapping structure.
The utility model has the advantages that:
1. the differential signal wire core is placed in the center of the cable core to replace a center filling core material to reduce the outer diameter of the cable, the diameter reduction manufacturing is facilitated, the length-to-axis ratio of the differential signal wire core is reasonably optimized to be 1.25:1 to 1.5:1, the outer diameter of the power supply wire core is larger than the short axis of the differential signal wire core and smaller than the long axis of the differential signal wire core, the outer diameter of the pair-twisted control wire core is smaller than the short axis of the differential signal wire core, lateral pressure borne by the power supply wire core when the cable is bent is transmitted to the differential signal wire core, the lateral pressure borne by the pair-twisted control wire core is facilitated to be relieved, effective protection is formed, the oval differential signal wire core is thicker than a flat wire core, the structural strength of the differential signal wire core is facilitated to be improved, and the polyurethane is better in wear resistance and is not prone to damage.
2. Two polypropylene resin core rods are added in the wire core body of the pair-twisting control wire core, the outer diameter ratio of the pair-twisting wire core to the polypropylene resin core rods is optimally designed to be 1.15:1 to 1.3:1, so that the wire core body can better bear lateral pressure in bending extrusion and other states, extrusion deformation is prevented, a circular cross section of the wire core body in a normal state is always kept, the occurrence of core breaking and wire breaking is favorably prevented, good electrical performance is guaranteed, and the wire core is durable in use.
3. The power sinle silk, pair twist control sinle silk and difference signal sinle silk are provided with the shielding layer separately, and the noise interference between each sinle silk of effectual prevention, and the cable core outside adds the netted conductor layer of shielding, can effectually restrain inside signal or noise and leak to the outside and restrain the interference that comes from external signal, provide better shielding effect.
Drawings
Fig. 1 is a schematic sectional structure diagram of an embodiment of the present invention.
In the figure: the cable comprises a power supply wire core, a 2-pair-twisted control wire core, a 3-differential signal wire core, a 4-PFA resin filled core material, a 5-polyester fiber plain woven fabric wrapping layer, a 6-shielding mesh conductor layer, a 7-polyurethane outer sheath, a 8-first inner conductor, a 9-foamed polyethylene insulating layer, a 10-copper-plastic composite tape wrapping layer, an 11-ETFE resin tape wrapping antifriction layer, a 12-pair-twisted wire core, a 13-polypropylene resin core rod, a 14-fluororesin insulating layer, a 15-second inner conductor, a 16-foamed fluororesin insulating layer, a 17-metal shielding layer, an 18-iron powder resin composite winding layer, a 19-third inner conductor, a 20-foamed PFA insulating layer, a 21-copper wire woven shielding layer and a 22-PFA resin tape wrapping antifriction layer.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
As shown in fig. 1, the utility model provides a take multicore communication cable of differential signal sinle silk, including two power sinle silks 1, six pair twist control sinle silks 2 around an oval differential signal sinle silk 3 and jointly with PFA resin filler core 4 transposition constitution cable core, every adjacent three pair twist control sinle silk 2 interval is provided with one power sinle silk 1, the length axial ratio of differential signal sinle silk 3 is 1.25:1 to 1.5:1, the external diameter of power sinle silk 1 is greater than the minor axis of differential signal sinle silk 3 and is less than the major axis of differential signal sinle silk 3, pair twist control sinle silk 2 external diameter is less than the minor axis of differential signal sinle silk 3, the cable core outside cladding has polyester fiber plain weave around covering 5, shielding mesh conductor layer 6 and polyurethane oversheath 7 in proper order. In one embodiment, the shielding mesh conductor layer 6 is formed by mixing and spirally winding two kinds of tinned copper wires with different wire diameters and a wire diameter ratio of 0.9 to 1. In one embodiment, the polyester fiber plain cloth wrapping layer 5 is a polyester fiber plain cloth spiral wrapping structure.
Differential signal sinle silk 3 is including two first inner conductors 8 that arrange side by side and the common cladding in foamed polyethylene insulating layer 9, foamed polyethylene insulating layer 9 outside has around the copper-plastic composite tape around covering 10 and ETFE resin area around covering antifriction layer 11 in proper order. In one embodiment, the copper-plastic composite tape wrapping layer 10 is a copper-plastic composite tape multi-layer spiral lapping and wrapping structure, and the copper-plastic composite tape comprises a copper foil tape inner layer and a PET film outer layer.
The pair-twisted control wire core 2 comprises two pair-twisted wire cores 12 and two polypropylene resin core rods 13 which are twisted together to form a wire core body, and further, the outer diameter ratio of the pair-twisted wire cores 12 to the polypropylene resin core rods 13 is 1.15: 1-1.3: 1. The outside cladding of sinle silk outside has fluororesin insulating layer 14, pair twist sinle silk 12 includes second inner conductor 15, second inner conductor 15 outside cladding in proper order has foaming fluororesin insulating layer 16 and metal shielding layer 17 and the compound winding layer 18 of iron powder resin. In one embodiment, the iron powder resin composite winding layer 18 is an iron powder polypropylene composite resin tape one-way spiral lapping and wrapping structure. In one embodiment, the metal shielding layer 17 is formed by two layers of tinned copper wires which are in reverse spiral winding weaving structure and have different spiral angles, and the spiral angles are 45-60 degrees.
The power sinle silk 1 includes third inner conductor 19, 19 outsides of third inner conductor have cladding foaming PFA insulating layer 20, copper wire in proper order to weave shielding layer 21 and PFA resin band around covering antifriction layer 22. In one embodiment, the braided shielding layer 21 of copper wires is formed by braiding tin-plated copper foil wires and tin-plated copper monofilaments in reverse spiral winding and at different spiral angles.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. Take multicore communication cable of difference signal sinle silk, characterized by: the cable comprises two power supply wire cores (1), six pair-twisted control wire cores (2) which surround an oval differential signal wire core (3) and are jointly twisted with a PFA resin filling core material (4) to form a cable core, wherein one power supply wire core (1) is arranged at intervals on every three adjacent pair-twisted control wire cores (2), the length-to-axial ratio of the differential signal wire cores (3) is 1.25:1 to 1.5:1, the outer diameter of each power supply wire core (1) is larger than the short axis of the differential signal wire core (3) and smaller than the long axis of the differential signal wire core (3), the outer diameter of each pair-twisted control wire core (2) is smaller than the short axis of the differential signal wire core (3), a polyester fiber plain weave lapping layer (5), a shielding mesh conductor layer (6) and a polyurethane outer sheath (7) are sequentially coated outside the cable core, the differential signal wire cores (3) comprise two first inner conductors (8) which are arranged side by side and are jointly coated in a foamed polyethylene insulating layer (9), and a copper-plastic composite tape wrapping layer (10) and an ETFE resin tape wrapping anti-friction layer (11) are sequentially wrapped outside the foamed polyethylene insulating layer (9).
2. The multi-core communication cable with differential signal cores of claim 1, wherein: the pair twist control sinle silk (2) include that two pair twist sinle silks (12) and two polypropylene resin plug (13) twist jointly and constitute the line core, the outside cladding of line core has fluororesin insulating layer (14), pair twist sinle silk (12) include second inner conductor (15), second inner conductor (15) outside cladding in proper order has foaming fluororesin insulating layer (16) and metal shielding layer (17) and the compound winding layer of iron powder resin (18).
3. The multi-core communication cable with differential signal cores as claimed in claim 2, wherein: the ratio of the outer diameters of the twisted pair wire core (12) and the polypropylene resin core rod (13) is 1.15:1 to 1.3: 1.
4. The multi-core communication cable with differential signal cores as claimed in claim 2, wherein: the iron powder resin composite winding layer (18) is of an iron powder polypropylene composite resin belt one-way spiral lapping and covering wrapping structure.
5. The multi-core communication cable with differential signal cores as claimed in claim 2, wherein: the metal shielding layer (17) is formed by two layers of tinned copper wires which are in reverse spiral winding weaving structures and different in spiral angle, and the spiral angle is 45-60 degrees.
6. The multi-core communication cable with differential signal cores of claim 1, wherein: power sinle silk (1) includes third inner conductor (19), third inner conductor (19) outside cladding in proper order has foaming PFA insulating layer (20), copper wire to weave shielding layer (21) and PFA resin band around package antifriction layer (22).
7. The multi-core communication cable with differential signal cores as claimed in claim 6, wherein: the copper wire braided shielding layer (21) is formed by spirally winding and braiding tin-plated copper foil wires and tin-plated copper monofilaments in opposite directions, and the spiral angles of the tin-plated copper foil wires and the tin-plated copper monofilaments are different.
8. The multi-core communication cable with differential signal cores of claim 1, wherein: the copper-plastic composite tape wrapping layer (10) is of a copper-plastic composite tape multi-layer spiral lapping and covering wrapping structure, and the copper-plastic composite tape comprises a copper foil tape inner layer and a PET film outer layer.
9. The multi-core communication cable with differential signal cores of claim 1, wherein: the shielding mesh conductor layer (6) is formed by mixing and spirally winding two tinned copper wires with different wire diameters and the wire diameter ratio of 0.9-1.
10. The multi-core communication cable with differential signal cores of claim 1, wherein: the polyester fiber plain weave lapping layer (5) is of a polyester fiber plain weave spiral lapping structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120437812.8U CN214226578U (en) | 2021-03-01 | 2021-03-01 | Multi-core communication cable with differential signal wire core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120437812.8U CN214226578U (en) | 2021-03-01 | 2021-03-01 | Multi-core communication cable with differential signal wire core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214226578U true CN214226578U (en) | 2021-09-17 |
Family
ID=77692830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120437812.8U Active CN214226578U (en) | 2021-03-01 | 2021-03-01 | Multi-core communication cable with differential signal wire core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214226578U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114255924A (en) * | 2021-11-23 | 2022-03-29 | 乐庭电线工业（惠州）有限公司 | Hollow high-speed transmission line |
-
2021
- 2021-03-01 CN CN202120437812.8U patent/CN214226578U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114255924A (en) * | 2021-11-23 | 2022-03-29 | 乐庭电线工业（惠州）有限公司 | Hollow high-speed transmission line |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN214226578U (en) | Multi-core communication cable with differential signal wire core | |
| CN214624471U (en) | Flexible wind power control cable | |
| CN210156166U (en) | Low inductance track traffic signal cable | |
| CN112837852A (en) | Bending-resistant and extrusion-resistant multi-core communication cable | |
| CN214956056U (en) | Small-diameter anti-interference multi-core insulated cable | |
| CN214705554U (en) | Anti-interference differential signal multi-core communication cable | |
| CN111462936A (en) | Tensile high-frequency multi-core cable and preparation method thereof | |
| CN214152506U (en) | Bending-resistant 4-core insulated cable | |
| CN214476500U (en) | Extrusion-resistant differential signal flat cable | |
| CN215376955U (en) | Multi-core shielded cable with communication wire core | |
| CN214505116U (en) | Anti-core-breaking 9-core communication cable | |
| CN214312709U (en) | Extrusion deformation resistant control wire core insulated cable | |
| CN217847527U (en) | Light environment-friendly digital monitoring comprehensive flat cable | |
| CN212010391U (en) | Stretch-proofing type high frequency multicore cable | |
| CN214226575U (en) | Bending-resistant anti-broken 3-core shielded cable | |
| CN212010526U (en) | Flexible foamed fluororesin insulation multi-core cable | |
| CN217086241U (en) | Light shielding enhanced multi-core control cable | |
| CN212010420U (en) | Bending-resistant anti-broken high-frequency multi-core cable | |
| CN217361167U (en) | Light environment-friendly 3-core insulated cable | |
| CN214152481U (en) | Breakage-proof type small-diameter multi-core shielded cable | |
| CN212010390U (en) | Flexible anti-broken double-layer shielding coaxial cable | |
| CN211906988U (en) | Torsion-resistant protective sleeve fracture type four-core insulated cable | |
| CN217008778U (en) | Flexible differential signal flat cable | |
| CN217086179U (en) | Core-breaking-preventing type small-diameter multi-core shielded cable | |
| CN214476641U (en) | Bending-resistant multi-core communication cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |