CN214312695U - Bending-resistant 4-core insulated cable - Google Patents
Bending-resistant 4-core insulated cable Download PDFInfo
- Publication number
- CN214312695U CN214312695U CN202120690137.XU CN202120690137U CN214312695U CN 214312695 U CN214312695 U CN 214312695U CN 202120690137 U CN202120690137 U CN 202120690137U CN 214312695 U CN214312695 U CN 214312695U
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- Prior art keywords
- insulating layer
- core
- inner conductor
- cable
- insulated
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- 238000005452 bending Methods 0.000 title claims abstract description 14
- 239000004020 conductor Substances 0.000 claims abstract description 52
- 239000004743 Polypropylene Substances 0.000 claims abstract description 47
- -1 polypropylene Polymers 0.000 claims abstract description 47
- 229920001155 polypropylene Polymers 0.000 claims abstract description 47
- 239000011347 resin Substances 0.000 claims abstract description 21
- 229920005989 resin Polymers 0.000 claims abstract description 21
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 20
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 17
- 229910052802 copper Inorganic materials 0.000 claims description 14
- 239000010949 copper Substances 0.000 claims description 14
- 239000000805 composite resin Substances 0.000 claims description 4
- 238000005253 cladding Methods 0.000 claims description 3
- 238000009941 weaving Methods 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 238000005187 foaming Methods 0.000 abstract description 5
- 238000009413 insulation Methods 0.000 abstract description 5
- 230000017105 transposition Effects 0.000 abstract description 3
- 241001391944 Commicarpus scandens Species 0.000 abstract 1
- 239000011162 core material Substances 0.000 description 45
- 238000004891 communication Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 239000000969 carrier Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The utility model discloses a 4 core insulated cable of type of nai bending, constitute the cable core including two insulation core and two insulating pair twist sinle silks transposition jointly, insulation core includes first inner conductor, first FEP insulating layer and first foaming polypropylene insulating layer, the totality thickness of first FEP insulating layer and first foaming polypropylene insulating layer is 0.45mm to 0.8mm, insulation pair twist sinle silk includes that two pair twist sinle silks transposition constitute pair strand wires core and second foaming polypropylene insulating layer, pair twist sinle silk includes second inner conductor and second FEP insulating layer, pair twist sinle silk external diameter is 1mm to 2.4mm, the cable core outside has the iron powder polypropylene resin insulating layer in proper order, shielding mesh conductor layer and PVC oversheath, PVC oversheath external diameter is 8mm to 16 mm. The insulated cable has better bending resistance, is not easy to break and has stable electrical shielding performance.
Description
Technical Field
The utility model relates to the technical field of cables, especially, relate to a 4 core insulated cables of resistant bending type.
Background
The communication cable is used for forming a channel for transmitting information to form a four-way and eight-way communication network. The method can be distinguished according to the aspects of laying, operating conditions, transmission frequency spectrum, cable core structure, insulating materials and the like. Due to rapid development of transmission technology, maintenance testing technology, and the like, communication cables are gradually becoming smaller in diameter and lighter in weight, and at the same time, the communication cables are also required to have good impedance characteristics, electrical insulation properties, and chemical stability. An important class of carriers for the propagation of electromagnetic noise are the various cables used in mechatronic devices. 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. Multi-core cables are one of the main varieties of cables. Electrical connection, control and the like of mechanical electronic equipment, medical equipment and the like are required to be applied to a multi-core cable with good flexibility, and under the trend that industrial machine equipment tends to be miniaturized, the multi-core cable is also developed towards the direction of thinning and flexibility, so that higher requirements are provided for the multi-core cable. The common multi-core cable has general bending resistance, the core has poor flexibility, the cable is easy to have conductor or shielding layer disconnection after being bent and twisted for many times, the high-frequency signal transmission characteristic is poor, the shielding effect is unstable, and the electrical characteristic is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to prior art not enough, the technical problem that solve provides a 4 core insulated cable of resistant bending type, and resistant bending property is better, is difficult for the broken string, and electrical shielding performance is stable, and the interference killing feature is strong, and high frequency signal transfer characteristic is better.
The utility model discloses a make above-mentioned technical problem solve through following technical scheme.
The bending-resistant 4-core insulated cable comprises two insulated wire cores and two insulated twisted-pair wire cores which are twisted together to form a cable core, wherein the outer diameter ratio of the insulated wire cores to the insulated twisted-pair wire cores is 9:10 to 12.5:10, each insulated wire core comprises a first inner conductor, a first FEP insulating layer and a first foamed polypropylene insulating layer, the first FEP insulating layer and the first foamed polypropylene insulating layer are sequentially covered outside the first inner conductor, the total thickness of the first FEP insulating layer and the first foamed polypropylene insulating layer is 0.45mm to 0.8mm, each insulated twisted-pair wire core comprises a twisted-pair wire core body formed by twisting the two twisted-pair wire cores and a second foamed polypropylene insulating layer covered outside the twisted-pair wire core body, each twisted-pair wire core comprises a second inner conductor and a second FEP insulating layer covered outside the second inner conductor, the outer diameter of each twisted-pair wire core is 1mm to 2.4mm, and the iron powder polypropylene resin insulating layer is sequentially covered outside the cable core, Shielding mesh conductor layer and PVC oversheath, PVC oversheath external diameter is 8mm to 16 mm.
Preferably, the first inner conductor and the second inner conductor are formed by concentrically twisting a plurality of tinned copper monofilaments, and the wire diameter of each tinned copper monofilament is 0.05mm to 0.2 mm.
Preferably, the first inner conductor has a lay length of 10 to 15 times an outer diameter of the first inner conductor.
Preferably, the second inner conductor has a lay length of 10 to 15 times an outer diameter of the second inner conductor.
Preferably, the thickness of the first FEP insulating layer is 0.15mm to 0.3 mm.
Preferably, the thickness of the iron powder polypropylene resin insulation layer is 1 to 1.5 times that of the first foamed polypropylene insulation layer.
Preferably, the iron powder polypropylene resin insulating layer is an iron powder polypropylene composite resin belt one-way spiral lapping and covering lapping structure.
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 diameter of the tinned copper wire adopted by the shielding mesh conductor layer is 0.01mm to 0.05mm, the spiral angle is 40 degrees to 55 degrees, and the weaving density is 92 percent to 95 percent.
Preferably, the lay length of the cable core is 10 to 20 times of the outer diameter of the insulated wire core.
The utility model has the advantages that:
1. the outer diameter ratio of the insulated wire core to the insulated twisted pair wire core is optimized to be 9:10 to 12.5:10, the circular section of the cable is favorably ensured, when the cable bears torsional bending, the foamed polypropylene insulating layer and the iron powder polypropylene resin insulating layer slide, lateral pressure borne by the insulating layer cannot be easily transmitted to the inner conductor, the flexing resistance is improved, the phenomenon of conductor tin-plated copper monofilament breakage is favorably prevented, the inner conductor is formed by concentrically twisting tin-plated copper monofilaments, the wire diameter of the tin-plated copper monofilaments is 0.05mm to 0.2mm, the flexibility of the inner conductor is favorably improved, and the service life of the cable is prolonged.
The PFA insulating layer and the foamed polypropylene insulating layer are in a non-bonding state, and the foamed polypropylene insulating layer bears larger stretching force than the PFA insulating layer, so that the stretching borne by the PFA insulating layer can be effectively slowed down, and the bending resistance is improved. The tensile strength and the elongation of the iron powder polypropylene resin insulating layer are greater than those of the foamed polypropylene insulating layer, the iron powder polypropylene resin insulating layer is wrapped on the foamed polypropylene insulating layer as a reinforcing structure of the foamed polypropylene insulating layer, and the cable is subjected to bending and twisting, so that the foamed polypropylene insulating layer can be effectively protected, the insulating layer is prevented from being torn, the service life of the cable is prolonged, and the durability is better.
3. The iron powder polypropylene resin insulating layer adopts the iron powder polypropylene composite resin area that iron powder filler and polypropylene resin are compound to form, the polypropylene resin basic unit can help reducing the stress concentration of shielding netted conductor layer, reduce the moment of torsion, improve antitorque commentaries on classics nature, the signal or the noise that shielding netted conductor layer can effectual suppression inside leaks to the outside and suppresses the interference that comes from the external signal, and, further absorb the noise interference that comes from the outside and convert the heat into through iron powder polypropylene resin insulating layer, the external noise interference ability of having strengthened suppression, improve the noise shielding characteristic.
Drawings
Fig. 1 is a schematic sectional structure diagram of an embodiment of the present invention.
In the figure: 1-insulated wire core, 2-insulated twisted-pair wire core, 3-first inner conductor, 4-first FEP insulating layer, 5-first foamed polypropylene insulating layer, 6-twisted-pair wire core, 7-second foamed polypropylene insulating layer, 8-second inner conductor, 9-second FEP insulating layer, 10-iron powder polypropylene resin insulating layer, 11-shielding mesh conductor layer, 12-PVC outer sheath and 13-central resin core material.
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 bending resistance type 4-core insulated cable according to the embodiment of the present invention includes two insulated cores 1 and two insulated twisted-pair cores 2 twisted together around a central resin core material 13 to form a cable core, and an outer diameter ratio of the insulated cores 1 to the insulated twisted-pair cores 2 is 9:10 to 12.5: 10. Preferably, the lay length of the cable core is 10 to 20 times of the outer diameter of the insulated wire core 1.
Insulating core 1 includes first inner conductor 3 and wraps in proper order first FEP insulating layer 4 and first foaming polypropylene insulating layer 5 of first inner conductor 3 outside, first FEP insulating layer 4 with first foaming polypropylene insulating layer 5's totality thickness is 0.45mm to 0.8mm, specific theory, first inner conductor 3 constitutes for the concentric transposition of a plurality of tin-plated copper monofilament, tin-plated copper monofilament line footpath is 0.05mm to 0.2mm, and is preferred, first inner conductor 3's lay length does 10 to 15 times of first inner conductor 3 external diameter. The thickness of the first FEP insulating layer 4 is preferably 0.15mm to 0.3 mm.
The insulating twisted pair sinle silk 2 includes that two twisted pair sinle silks 6 are twisted and constitute the twisted pair core and cladding the outside second foamed polypropylene insulating layer 7 of twisted pair core, twisted pair sinle silk 6 includes second inner conductor 8 and cladding and is in the outside second FEP insulating layer 9 of second inner conductor 8, the 6 external diameters of twisted pair sinle silk are 1mm to 2.4 mm. Specifically, the second inner conductor 8 is formed by concentrically twisting a plurality of tinned copper monofilaments, the wire diameter of each tinned copper monofilament is 0.05mm to 0.2mm, and preferably, the lay length of the second inner conductor 8 is 10 to 15 times of the outer diameter of the second inner conductor 8.
The cable core is coated with an iron powder polypropylene resin insulating layer 10, a shielding mesh conductor layer 11 and a PVC outer sheath 12 in sequence, and the outer diameter of the PVC outer sheath 12 ranges from 8mm to 16 mm. Specifically, the iron powder polypropylene resin insulating layer 10 is an iron powder polypropylene composite resin belt one-way spiral lapping and covering wrapping structure, and further, the thickness of the iron powder polypropylene resin insulating layer 10 is 1-1.5 times of that of the first foamed polypropylene insulating layer 5. In one embodiment, the shielding mesh conductor layer 11 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, and further, the tinned copper wire adopted by the shielding mesh conductor layer 7 has a wire diameter of 0.01mm to 0.05mm, a spiral angle of 40 degrees to 55 degrees and a weaving density of 92% to 95%.
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. Resistant 4 core insulated cable of bending type, characterized by: the cable comprises two insulated wire cores (1) and two insulated twisted-pair wire cores (2) which are twisted together around a central resin core (13) to form a cable core, wherein the outer diameter ratio of the insulated wire cores (1) to the insulated twisted-pair wire cores (2) is 9:10 to 12.5:10, the insulated wire cores (1) comprise a first inner conductor (3), a first FEP insulating layer (4) and a first foamed polypropylene insulating layer (5) which are sequentially coated outside the first inner conductor (3), the total thickness of the first FEP insulating layer (4) and the first foamed polypropylene insulating layer (5) is 0.45mm to 0.8mm, the insulated twisted-pair wire cores (2) comprise two twisted-pair wire cores (6) to form a twisted-pair wire core and a second foamed polypropylene insulating layer (7) coated outside the twisted-pair wire core, the twisted-pair wire cores (6) comprise a second inner conductor (8) and a second insulating layer (9) coated outside the second inner conductor (8), the pair twist sinle silk (6) external diameter is 1mm to 2.4mm, the cable core outside cladding has iron powder polypropylene resin insulating layer (10), shielding netted conductor layer (11) and PVC oversheath (12) in proper order, PVC oversheath (12) external diameter is 8mm to 16 mm.
2. The flexure-resistant 4-core insulated cable of claim 1, wherein: the first inner conductor (3) and the second inner conductor (8) are formed by concentrically twisting a plurality of tinned copper monofilaments, and the wire diameter of each tinned copper monofilament is 0.05 mm-0.2 mm.
3. A flexure-resistant 4-core insulated cable according to claim 2, wherein: the lay length of the first inner conductor (3) is 10 to 15 times the outer diameter of the first inner conductor (3).
4. A flexure-resistant 4-core insulated cable according to claim 2, wherein: the second inner conductor (8) has a lay length of 10 to 15 times the outer diameter of the second inner conductor (8).
5. The flexure-resistant 4-core insulated cable of claim 1, wherein: the thickness of the first FEP insulating layer (4) is 0.15mm to 0.3 mm.
6. The flexure-resistant 4-core insulated cable of claim 1, wherein: the thickness of the iron powder polypropylene resin insulating layer (10) is 1-1.5 times of that of the first foamed polypropylene insulating layer (5).
7. The flexure-resistant 4-core insulated cable of claim 1, wherein: the iron powder polypropylene resin insulating layer (10) is of an iron powder polypropylene composite resin belt one-way spiral lapping and covering wrapping structure.
8. The flexure-resistant 4-core insulated cable of claim 1, wherein: the shielding mesh conductor layer (11) is formed by mixing and spirally winding two tinned copper wires with different wire diameters and the wire diameter ratio of 0.9-1.
9. The flexure-resistant 4-core insulated cable of claim 8, wherein: the diameter of a tinned copper wire adopted by the shielding mesh conductor layer (11) is 0.01mm to 0.05mm, the spiral angle is 40 degrees to 55 degrees, and the weaving density is 92 percent to 95 percent.
10. The flexure-resistant 4-core insulated cable of claim 1, wherein: the lay length of the cable core is 10 to 20 times of the outer diameter of the insulated wire core (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120690137.XU CN214312695U (en) | 2021-04-06 | 2021-04-06 | Bending-resistant 4-core insulated cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120690137.XU CN214312695U (en) | 2021-04-06 | 2021-04-06 | Bending-resistant 4-core insulated cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214312695U true CN214312695U (en) | 2021-09-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120690137.XU Expired - Fee Related CN214312695U (en) | 2021-04-06 | 2021-04-06 | Bending-resistant 4-core insulated cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214312695U (en) |
-
2021
- 2021-04-06 CN CN202120690137.XU patent/CN214312695U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210928 |
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| CF01 | Termination of patent right due to non-payment of annual fee |