CN220155263U - Flexible shielded cable - Google Patents
Flexible shielded cable Download PDFInfo
- Publication number
- CN220155263U CN220155263U CN202321532516.1U CN202321532516U CN220155263U CN 220155263 U CN220155263 U CN 220155263U CN 202321532516 U CN202321532516 U CN 202321532516U CN 220155263 U CN220155263 U CN 220155263U
- Authority
- CN
- China
- Prior art keywords
- flexible
- aluminum foil
- tape
- shielded cable
- shielding layer
- 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.)
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Links
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 60
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 60
- 239000011888 foil Substances 0.000 claims abstract description 60
- 230000003139 buffering effect Effects 0.000 claims abstract description 4
- 239000005030 aluminium foil Substances 0.000 claims abstract 4
- 239000010410 layer Substances 0.000 claims description 45
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 13
- 238000009954 braiding Methods 0.000 claims description 12
- 239000000945 filler Substances 0.000 claims description 11
- 239000012790 adhesive layer Substances 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 4
- 239000011496 polyurethane foam Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 3
- 238000005452 bending Methods 0.000 abstract description 13
- 239000004020 conductor Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000012856 packing Methods 0.000 abstract 3
- 230000005540 biological transmission Effects 0.000 description 2
- KVNRLNFWIYMESJ-UHFFFAOYSA-N butyronitrile Chemical compound CCCC#N KVNRLNFWIYMESJ-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Landscapes
- Insulated Conductors (AREA)
Abstract
The utility model relates to the technical field of power cables, in particular to a flexible shielding cable which comprises an elastic core strip, twisted pairs, an aluminum foil shielding layer, a braided shielding layer and a sheath layer, wherein the aluminum foil shielding layer comprises more than one aluminum foil wrapping tape wrapped on the outer sides of the twisted pairs, and flexible filling tapes are adhered and fixed on the inner sides of the aluminum foil wrapping tapes, so that elastic buffering is arranged between the aluminum foil shielding layer and the twisted pairs; through setting up the aluminium foil that the adhesion had flexible packing area around the band, make aluminium foil shielding layer and paired line have one deck elasticity buffer layer, when the whole crooked of cable, the paired line can extrude flexible packing area, and flexible packing area shrink makes aluminium foil around having certain activity space between band and the paired line, releases the tensile stress that crooked production, slows down the condition that conductor fatigue bending leads to breakage or rupture to this prolongs the holistic life of cable under the frequent bending work condition of needs.
Description
Technical Field
The utility model relates to the technical field of power cables, in particular to a flexible shielding cable.
Background
The shielded cable is a transmission line which uses a metal mesh braid to wrap the signal line, and the shielding is used for ensuring the transmission performance of the system in the environment with electromagnetic interference, and the anti-interference performance includes two aspects, namely the capability of resisting external electromagnetic interference and the capability of radiating electromagnetic interference outwards of the system.
The shielding layer on the shielding cable is generally formed by wrapping aluminum foil and braiding copper wires, so that the shielding effect of the cable is improved, the aluminum foil and the copper wires are combined, the aluminum foil and the copper wires are braided to tighten the cable inside, and the movable gap is lacking between the cables inside when the cable is integrally bent, so that the flexibility of the cable is integrally reduced, and the service life of the cable is reduced in some occasions requiring bending.
Disclosure of Invention
According to a first aspect of the object of the present utility model, there is provided a flexible shielded cable comprising:
an elastic core bar arranged at the central axis position of the cable in the section direction;
a plurality of twisted pairs arranged uniformly around the outside of the elastic core strip;
the aluminum foil shielding layer, the braiding shielding layer and the sheath layer are sequentially arranged on the outer side of the twisted pair from inside to outside;
the aluminum foil shielding layers comprise more than one aluminum foil wrapping tape wrapped on the outer sides of the twisted pairs, and flexible filling tapes are adhered and fixed on the inner sides of the aluminum foil wrapping tapes, so that elastic buffering is arranged between the aluminum foil shielding layers and the twisted pairs.
Preferably, an adhesive layer is arranged on one side surface of the flexible filling belt, which is attached to the aluminum foil wrapping belt, and the flexible filling belt and the aluminum foil wrapping belt are adhered and fixed through the adhesive layer.
Preferably, the flexible filling belt is provided with a protruding part at one side far away from the aluminum foil wrapping belt, and the protruding part is arranged along the length direction parallel to the flexible filling belt.
Preferably, a cavity is provided between the protrusion and the flexible filler strip.
Preferably, the number of the protrusions on the flexible filler tape is two or more.
Preferably, the cross section of the protrusion is configured as a circle, rectangle or waist circle.
Preferably, the elastic core strip comprises a polyurethane foam strip.
Preferably, the cross section of the elastic core strip is provided as a circle or a regular polygon.
Preferably, the elastic core strip is provided as a hollow or solid strip.
Preferably, the braided shielding layer comprises a copper wire or tin-plated copper wire shielding layer with a braiding density of more than 80%.
Compared with the prior art, the utility model has the remarkable beneficial effects that:
according to the utility model, the aluminum foil wrapping tape adhered with the flexible filling tape is arranged, so that after the aluminum foil wrapping tape is wrapped into the aluminum foil shielding layer, the aluminum foil shielding layer and the twisted pair are provided with the elastic buffer layer, when the cable is integrally bent, the twisted pair can squeeze the flexible filling tape, the flexible filling tape contracts to enable a certain movable space to exist between the aluminum foil wrapping tape and the twisted pair, so that tensile stress generated by bending is released, and the situation that a conductor is broken or broken due to fatigue bending is relieved, thereby prolonging the integral service life of the cable under the working condition of frequent bending.
Drawings
The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the utility model will now be described, by way of example, with reference to the accompanying drawings.
Fig. 1 is a schematic cross-sectional view of a flexible shielded cable according to an embodiment of the present utility model.
Fig. 2 is a schematic diagram of a hierarchical structure of a flexible shielded cable according to an embodiment of the present utility model.
Fig. 3 is a schematic perspective sectional structure of a flexible shielded cable according to an embodiment of the present utility model.
Fig. 4 is a schematic diagram showing the connection of the flexible filler tape and the flexible filler tape in the flexible shielded cable according to the embodiment of the present utility model.
1. An elastic core strip; 2. twisted pair wires; 3. a flexible filler strip; 31. a protruding portion; 311. a cavity; 32. an adhesive layer; 4. aluminum foil wrapping tape; 5. braiding a shielding layer; 6. and a sheath layer.
Detailed Description
For a better understanding of the technical content of the present utility model, specific examples are set forth below, along with the accompanying drawings.
Because the aluminum foil shielding and the braiding shielding of the existing shielding cable configuration can increase the overall hardness of the cable, the flexibility is reduced, when the cable is used in occasions with high requirements on flexibility (such as a drag chain system or a robot control circuit), the internal signal wire core is extruded by the aluminum foil and the braiding layer, the stress of the wire core at the bending part can not be released, the wire core can be broken or the shielding layer is broken after repeated bending for many times, and the service life of the cable is reduced.
The flexible shielded cable in combination with the example shown in fig. 1 includes an elastic core 1, twisted pair wires 2, an aluminum foil shielding layer, a braided shielding layer 5, and a jacket layer 6.
As shown in fig. 1 to 3, the elastic core strip 1 is provided at a central axis position in a cross-sectional direction of the cable. The twisted pairs 2 are uniformly wrapped outside the elastic core strip 1, and an aluminum foil shielding layer, a woven shielding layer 5 and a sheath layer 6 are sequentially arranged outside the twisted pairs 2 from inside to outside.
Specifically, the elastic core strip 1 can be a polyurethane foam strip, and the optional elastic core strip 1 is a hollow or solid strip, and the polyurethane foam strip is formed by foaming, so that the elastic core strip has good compression allowance and elasticity, and can provide a contraction space for the twisted pair 2 when the cable is integrally bent.
Furthermore, the section of the elastic core strip 1 is set to be round or regular polygon, the selection can be made according to the number of the outer twisted pair 2, and the twisted pair 2 adopts an oxygen-free annealed fine copper wire to externally cover an insulating layer, so that the elastic core strip has better flexibility and bending resistance.
In order to enable a certain movable space to be formed between the aluminum foil shielding layer and the twisted pair 2 in a bending state, the aluminum foil shielding layer comprises more than one aluminum foil wrapping tape 4 wrapped on the outer side of the twisted pair 2, and a flexible filling tape 3 is fixedly bonded on the inner side of each aluminum foil wrapping tape 4, so that elastic buffering is formed between the aluminum foil shielding layer and the twisted pair 2.
Further, an adhesive layer 32 is arranged on one side surface of the flexible filling belt 3, which is attached to the aluminum foil wrapping belt 4, and the flexible filling belt 3 and the aluminum foil wrapping belt 4 are adhered and fixed through the adhesive layer 32.
Thus, when the cable is manufactured, the flexible filling tape 3 and the aluminum foil wrapping tape 4 are wrapped on the outer side of the twisted pair 2 together, one side with the flexible filling tape 3 is attached to the twisted pair 2 during wrapping, when the cable is integrally bent, the twisted pair 2 can squeeze the flexible filling tape 3, and the flexible filling tape 3 contracts to enable a certain movable space to exist between the aluminum foil wrapping tape 4 and the twisted pair 2.
Further, in order to increase the movable space between the aluminum foil wrapping tape 4 and the twisted pair 2 when the cable is bent, a protruding portion 31 is arranged on one side of the flexible filling tape 3 away from the aluminum foil wrapping tape 4, the protruding portion 31 is arranged along the length direction of the parallel flexible filling tape 3, and a cavity 311 is formed between the protruding portion 31 and the flexible filling tape 3, so that the surface of the aluminum foil wrapping tape 4 can form a concave-convex structure when the aluminum foil wrapping tape is wrapped, the aluminum foil is easier to bend, and meanwhile, the flexible filling tape 3 has a larger compressible space at the protruding portion 31.
Preferably, as shown in fig. 4, more than two protruding parts 31 are provided on the flexible filling strip 3, the cross section of the protruding parts 31 can be provided in a oval shape, and the cross section of the optional protruding parts 31 can also be in a round shape or a rectangular shape, wherein the larger the thickness of the protruding parts 31 is, the larger the compressible space is, and the better the overall flexibility of the cable is.
Specifically, the braided shielding layer 5 adopts a copper wire or tinned copper wire shielding layer with the braiding density of more than 80%, has a good shielding effect, and the sheath layer 6 adopts a butyronitrile mixed flexible sheath, so that the flexibility of the cable after being cabled can be enhanced.
According to the embodiment, the aluminum foil wrapping tape 4 adhered with the flexible filling tape 3 is arranged, so that after the aluminum foil wrapping tape 4 is wrapped into the aluminum foil shielding layer, the aluminum foil shielding layer and the twisted pair 2 are provided with the elastic buffer layer, when the cable is integrally bent, the twisted pair 2 can squeeze the flexible filling tape 3, the flexible filling tape 3 contracts to enable a certain movable space to be formed between the aluminum foil wrapping tape 4 and the twisted pair 2, tensile stress generated by bending is released, and the situation that the conductor is broken or broken due to fatigue bending is relieved, so that the integral service life of the cable under the working condition of frequent bending is prolonged.
As an example, the flexible shielding cable of the foregoing example structure of the present utility model, the manufacturing process thereof mainly includes:
the first step: firstly, preparing an elastic core strip 1, and extruding a foam strip with a certain section by using polyurethane as a raw material by using an extruder, wherein the section of the foam strip can be selected according to the shape of a replacement die head, such as a round shape, a quadrilateral shape and a hexagon shape;
and a second step of: preparing a twisted pair 2, firstly preparing a single-core wire, twisting a plurality of anaerobic annealed fine copper wires into a bare wire by using a twisting machine, extruding an insulating layer on the outer side of the bare wire to form a single-core wire with insulation, twisting two single-core wires into a double-stranded wire 2, and twisting the multi-stranded twisted pair 2 on the outer side of an elastic core strip 1 to form a multi-core wire;
and a third step of: preparing a flexible filling belt 3, extruding the flexible filling belt 3 by using an extruder through elastic materials such as polyurethane or rubber, wherein the width of the flexible filling belt 3 is equal to the width of an aluminum foil wrapping belt 4, spraying self-adhesive on the back side to form an adhesive layer 32 on one side of the flexible filling belt 3, and then adhering and fixing the aluminum foil wrapping belt 4 and one side of the flexible filling belt 3 with the adhesive layer 32 to form a composite belt of the aluminum foil wrapping belt 4 and the flexible filling belt 3;
fourth step: preparing an aluminum foil shielding layer, wrapping a composite belt formed by an aluminum foil wrapping belt 4 and a flexible filling belt 3 on the outer side of the multi-core wire, and completely wrapping the aluminum foil wrapping belt 4 on the outer side of the multi-core wire to form the aluminum foil shielding layer;
fifth step: preparing a braided shielding layer 5, braiding copper wires or tin-plated copper wires on the outer side of the aluminum foil shielding layer to form a net by using a braiding machine, and forming the braided shielding layer 5 by making the braiding density larger than 80%;
sixth step; and preparing a sheath layer 6, and extruding the butyronitrile mixed material by using an extruder to cover the outer side of the braided shielding layer 5 to form the sheath layer 6.
While the utility model has been described with reference to preferred embodiments, it is not intended to be limiting. Those skilled in the art will appreciate that various modifications and adaptations can be made without departing from the spirit and scope of the present utility model. Accordingly, the scope of the utility model is defined by the appended claims.
Claims (10)
1. A flexible shielded cable, comprising:
an elastic core strip (1) arranged at the axial position of the cable;
a plurality of twisted pairs (2) arranged uniformly around the outside of the elastic core strip (1);
the aluminum foil shielding layer, the braiding shielding layer (5) and the sheath layer (6) are sequentially arranged on the outer side of the twisted pair (2) from inside to outside;
the aluminum foil shielding layers comprise more than one aluminum foil wrapping tape (4) wrapped on the outer sides of the twisted pairs (2), and flexible filling tapes (3) are adhered and fixed on the inner sides of the aluminum foil wrapping tapes (4) respectively, so that elastic buffering is arranged between the aluminum foil shielding layers and the twisted pairs (2).
2. Flexible shielding cable according to claim 1, wherein an adhesive layer (32) is provided on a side surface of the flexible filler tape (3) attached to the aluminum foil wrapping tape (4), and the flexible filler tape (3) and the aluminum foil wrapping tape (4) are adhered and fixed by the adhesive layer (32).
3. Flexible shielded cable according to claim 1, characterized in that the side of the flexible filler tape (3) remote from the aluminium foil wrapping tape (4) is provided with a protrusion (31), the protrusion (31) being arranged in a length direction parallel to the flexible filler tape (3).
4. A flexible shielded cable according to claim 3, wherein the protrusion (31) has a cavity (311) between the flexible filler tape (3).
5. A flexible shielded cable according to claim 3, wherein the protrusions (31) on the flexible filler tape (3) are provided in two or more.
6. A flexible shielded cable according to claim 3, wherein the cross section of the protrusion (31) is arranged in a circular, rectangular or waist-circular shape.
7. Flexible shielded cable according to claim 1, characterized in that the elastic core strip (1) comprises a polyurethane foam strip.
8. Flexible shielded cable according to claim 1, characterized in that the cross section of the elastic core strip (1) is arranged as a circle or as a regular polygon.
9. Flexible shielded cable according to claim 8, characterized in that the elastic core strip (1) is provided as a hollow or solid strip.
10. Flexible shielded cable according to claim 1, characterized in that the braided shield (5) comprises copper wires or tin-plated copper wire shields with a braiding density of more than 80%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321532516.1U CN220155263U (en) | 2023-06-15 | 2023-06-15 | Flexible shielded cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321532516.1U CN220155263U (en) | 2023-06-15 | 2023-06-15 | Flexible shielded cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220155263U true CN220155263U (en) | 2023-12-08 |
Family
ID=89013529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321532516.1U Active CN220155263U (en) | 2023-06-15 | 2023-06-15 | Flexible shielded cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220155263U (en) |
-
2023
- 2023-06-15 CN CN202321532516.1U patent/CN220155263U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |