CN210575250U - Shielding communication line - Google Patents
Shielding communication line Download PDFInfo
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- CN210575250U CN210575250U CN201921758512.9U CN201921758512U CN210575250U CN 210575250 U CN210575250 U CN 210575250U CN 201921758512 U CN201921758512 U CN 201921758512U CN 210575250 U CN210575250 U CN 210575250U
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Abstract
The utility model relates to a shielding communication line, which belongs to the electric wire field, the shielding communication line comprises a cable core part, a wrapping layer, a metal foil shielding layer, a metal mesh grid, a dampproof layer and a sheath layer from inside to outside, the cable core part comprises a first filling rope, a supporting framework, four core line groups and a fireproof layer, the core line groups comprise a pair of core lines and an insulating layer, the pair of core lines are twisted in pair with each other to form a pair of twisted core lines, the insulating layer coats the twisted core lines, the supporting framework is quadrilateral, the supporting framework coats the first filling rope, and the four edges of the supporting framework are respectively attached with the outside of the core line groups, the fireproof layer is filled in the gap of the cable core part, the shielding communication line also comprises a ground wire, the ground wire is arranged between the metal foil shielding layer and the metal foil mesh grid, the integrity of signal transmission is ensured through the shielding function, meanwhile, the service life of the electric wire is prolonged through the matching arrangement of the internal structure of the cable core part.
Description
Technical Field
The utility model relates to an electric wire field especially relates to a shielding communication line.
Background
The through wire is a communication line composed of a plurality of mutually insulated core wires and an outer sheath for protecting the core wires from mechanical damage, and is a wire for transmitting telephone, telegraph, fax document, television and radio programs, data and other electric signals, based on the working range, the protection strength of the prior communication wire to the core wires is insufficient, when the wire is extruded by foreign objects or extruded by the foreign objects for a long time, each core wire is easy to deform and damage, thereby affecting the transmission of the signals, and destroying the integral structure of the wire, when the communication wire is used for a long time, on one hand, the moisture-proof and fire-proof capability of the communication wire is insufficient, the inner structure is easy to damage by continuous use, thereby causing poor use effect of users, on the other hand, the shielding effect is insufficient, which is reflected in that the structure of the wire is incomplete, unstable and lack of toughness, thereby causing the parts with shielding function to be easy to, because the current passing through the electric wire is relatively large, a magnetic field is generated around the current, so that the magnetic field is easy to leak out of the cable, and the strength of the cable for transmitting signals is influenced, so that the signal transmission effect is poor.
SUMMERY OF THE UTILITY MODEL
In view of the above circumstances, the utility model discloses mainly solve among the prior art shielding communication line life is short, uses for a long time and easily leads to its problem that shielding effect is poor, provides a shielding communication line, through to passing through contact and cooperation between each position of shielding communication line, the structural stability of electric wire cable core the dampproof course and the oversheath is right the woven wire mesh metal sheet shielding layer and the protection of ground wire has guaranteed shielding communication line shielding effect makes it possess fire prevention, damp-proofing performance, has improved electric wire structure's integrality, has improved the life of electric wire.
To achieve the object, the utility model provides a shielding communication line, which comprises a cable core, a wrapping layer, a metal foil shielding layer, a metal mesh grid, a moisture-proof layer and a sheath layer, wherein the cable core comprises a first filling rope, a supporting framework, four core wire sets and a fire-proof layer, the first filling rope is arranged at the center of the shielding communication line, the core wire sets are uniformly arranged along the circumferential direction by taking the first filling rope as the center, the core wire sets comprise a pair of core wires and an insulating layer, the pair of core wires are twisted with each other to form a pair of twisted core wires, the insulating layer coats the twisted core wires, the supporting framework is quadrilateral, the supporting framework coats the first filling rope, and the four edges of the supporting framework are respectively attached to the outer sides of the core wire sets, the fire-proof layer is filled in the gap of the cable core, the shielding communication line further comprises a ground wire, the ground wire is arranged between the metal foil shielding layer and the metal woven mesh, the metal woven mesh is suitable for shielding interference in a low-frequency range, the metal foil shielding layer is suitable for shielding interference in a high-frequency range, external electromagnetic interference is effectively prevented from entering the wire through reflection, absorption and skin effect principles of electromagnetic waves, internal signals are prevented from being radiated out, and the work of other equipment is interfered, the ground wire is arranged between the metal foil shielding layer and the metal woven mesh, and external interference signals can be guided into the ground by the ground wire, so that the shielding communication wire obtains lasting balance; the flame retardant coating fill in the space department of cable core portion, it makes to fill cable core portion structural integrity, and is more firm, has guaranteed fire behavior, still is provided with simultaneously around the covering for the cladding cable core portion has guaranteed the stability of cable core portion structure sets up the dampproof coating, the effectual invasion that prevents moisture and moisture.
Preferably, the metal mesh grid is an aluminum magnesium mesh grid, so that interference of external signals is better prevented.
Preferably, four sides of the supporting framework are all arc-shaped and are star-shaped.
Preferably, the core wire comprises a conductor, the conductor is an oxygen-free copper conductor, the conductor is made of high-precision oxygen-free copper materials, transmission is efficient, and heating is not easy to occur.
Further, the core wire further comprises a shielding layer, the shielding layer is attached to the outer side of the core wire and is an MDPE shielding layer, the MDPE keeps the rigidity of HDPE, and the core wire has the flexibility and creep resistance of LDPE, so that the core wire has long-term strength keeping performance and longer service life.
Preferably, the first filling rope is a first flexible filling rope, so as to ensure toughness and flexibility of the shielded communication line and improve service life of the shielded communication line.
Preferably, the core wire set further includes at least one second filler cord, and the second filler cord is disposed at the gap of the core wire set.
Preferably, the wrapping layer is a flame-retardant alkali-free glass fiber tape, the cable core part is wrapped by the wrapping layer, the stability of the structure of the cable core part is ensured, and the flame-retardant alkali-free glass fiber tape has excellent high flame-retardant, oxygen-insulating and fire-insulating properties.
Furthermore, the moisture-proof layer is a semi-conductive water-blocking tape layer, the semi-conductive water-blocking tape layer has the double effects of semi-conductivity and water blocking, and when the semi-conductive water-blocking tape layer expands when meeting water, the metal woven mesh can be perfectly sealed, so that the invasion of moisture and humidity can be effectively prevented.
Furthermore, the sheath layer is a cross-linked polyethylene sheath which has excellent heat resistance, stronger insulativity, acid and alkali resistance and oil resistance and strong mechanical property.
The utility model has the advantages that:
the utility model provides a shielding communication line, through setting up the metal mesh grid metal foil shielding layer and the ground wire, the cooperation prevents the transmission data of shielding communication line receives external electromagnetic interference and radio frequency interference's influence, has guaranteed signal transmission's integrality, lasting equilibrium, improves transmission quality and data information transmission's efficiency. The cable core is used for guaranteeing the toughness and the flexibility of the shielding communication line and prolonging the service life of the shielding communication line through the arrangement of the first filling rope, the supporting framework is attached to the core wire group and used for supporting and isolating the core wire group, mutual extrusion between the core wire group can be avoided, and the structural integrity and the stability of the cable core are guaranteed. Therefore, through contact and cooperation between each part of shielding communication line, pass through promptly the structural stability of electric wire cable core the dampproof course and the oversheath is right the metal mesh grid the metal forming shielding layer and the protection of ground wire has guaranteed shielding communication line shielding effect makes shielding communication line has possessed fire prevention, dampproofing performance, has improved shielding communication line structure's integrality, has improved the life of electric wire.
Drawings
Fig. 1 is a schematic structural diagram of a shielded communication line provided by the present invention;
in the figure: 1-a first filling rope, 2-a core wire, 21-a conductor, 22-a shielding layer, 3-a second filling rope, 4-an insulating layer, 5-a supporting framework, 6-a fireproof layer, 7-a wrapping layer, 8-a metal foil shielding layer, 9-a ground wire, 10-a metal woven mesh, 11-a damp-proof layer and 12-a sheath layer.
Detailed Description
The technical solution of the present invention will be further explained with reference to the accompanying drawings and embodiments.
Examples
Referring to fig. 1, the shielded communication line provided in this embodiment includes, from inside to outside, a cable core, a wrapping layer 7, a metal foil shielding layer 8, a braid layer, a moisture-proof layer 11, and a sheath layer 12, and further includes a ground wire 9, and the cross section of the shielded communication line provided in this embodiment is circular.
Referring to fig. 1, the cable core includes a first filling rope 1, a supporting framework 5, four core wire groups and a fireproof layer 6.
Referring to fig. 1, the first filling rope 1 is disposed at the center of the shielded communication line, the first filling rope 1 may be a first flexible filling rope, and the first filling rope 1 is used to ensure toughness and flexibility of the shielded communication line and improve the service life of the shielded communication line.
Referring to fig. 1, four core wire groups are uniformly arranged in a circumferential direction with the first filling rope 1 as a center, the core wire group provided in this embodiment is round, and certainly, may also be flat, the core wire group includes a pair of core wires 2, an insulating layer 4 and a second filling rope 3, the core wires 2 include a conductor 21 and a shielding layer 22 from inside to outside, the conductor 21 is an oxygen-free copper conductor 21, the conductor 21 adopts a high-precision copper material without oxygen, is efficiently transported and is not easy to heat, the shielding layer 22 is attached to the outside of the core wires 2, the shielding layer 22 is an MDPE shielding layer, the MDPE maintains the rigidity of HDPE, and has the flexibility and creep resistance of LDPE, so that the core wires 2 have long-term strength retention and longer service life, the pair of core wires 2 are twisted with each other to form a pair of twisted core wires 2, the symmetry axis of the twisted core wires 2 along the length direction thereof is perpendicular to the radius of the shielded communication wire, the insulating layer 4 coats the twisted pair core wire 2, the insulating layer 4 is a thermoplastic elastic material insulating layer 4 and has excellent flexibility, oil resistance, warping property, fatigue resistance, wear resistance and chemical resistance, at least one second filling rope 3 is filled in the gap of the core wire group, the embodiment provides two second filling ropes 3, the two second filling ropes 3 are symmetrically arranged about the symmetric axis of the twisted pair core wire 2 along the length direction of the twisted pair core wire 2, the second filling ropes 3 can be second flexible filling ropes, and through the matching arrangement of the internal structures of the core wire group, the compression resistance of the core wire 2 is improved, the service life of the core wire 2 is prolonged, so that the shielded communication wire is more compression-resistant and tensile, and has better flexible effect.
Referring to fig. 1, the supporting framework 5 is quadrilateral, the supporting framework 5 is coated on the outer side of the first filling rope 1, and four sides of the supporting framework 5 are respectively attached to the outer sides of the core wire groups, for the round or flat core wire groups, the four sides of the supporting framework 5 can be arc-shaped and have a closed star shape with four arc-shaped sides, the four arc-shaped sides are attached to the outer sides of the core wire groups, the supporting framework 5 can be made of plastic or can be a deformation-resistant rubber mat, the plastic framework and the deformation-resistant rubber mat have the function of isolating four core wire groups, mutual extrusion between the core wire groups can be avoided, and meanwhile, the framework of the deformation-resistant rubber mat also has a buffering effect and improves the compression resistance of the shielded communication line.
Referring to fig. 1, the fire-proof layer 6 is filled in the gap of cable core, and the filling makes cable core structure is complete, and is more firm, the fire-proof layer 6 is magnesium oxide filling layer or diamond mud oxygen barrier layer, the magnesium oxide filling layer is fire-proof effectual, diamond mud oxygen barrier layer adaptability is wide and fire-retardant efficient.
Referring to fig. 1, the cable core is coated with the wrapping layer 7, so that the stability of the structure of the cable core is ensured, and the wrapping layer 7 is a flame-retardant alkali-free glass fiber tape which has excellent high flame retardance, oxygen isolation and fire isolation properties.
Referring to fig. 1, the metal foil shielding layer 8 adds protection to the fragile twisted-pair core 2, creates a balanced environment, and effectively prevents external electromagnetic interference from entering the cable and prevents internal signals from radiating out to interfere with the operation of other devices by using the principles of reflection, absorption and skin effect of metal on electromagnetic waves.
Referring to fig. 1, the metal mesh 10 is an aluminum-magnesium mesh because of its low critical resistance. For rf interference, the metal foil layer shield is most effective because the gap created by the metal mesh shield allows high frequency signals to freely enter and exit. Therefore, for the interference field of high and low frequency mixing, a combined shielding mode of a metal foil layer and a metal mesh is adopted, so that the metal mesh shielding is suitable for the interference in a low frequency range, and the metal foil shielding is suitable for the interference in a high frequency range.
Referring to fig. 1, the ground wire 9 is disposed between the metal foil shielding layer 8 and the metal mesh 10, and an external interference signal can be guided to the ground by the ground wire 9.
Referring to fig. 1, the moisture-proof layer 11 is a semi-conductive water-blocking tape layer, which has the dual functions of semi-conduction and water-blocking, and when the semi-conductive water-blocking tape layer swells in water, the metal mesh grid 10 can be perfectly sealed, so as to effectively prevent the intrusion of moisture and humidity.
Referring to fig. 1, the sheath layer 12 is a cross-linked polyethylene sheath, which has excellent heat resistance, high insulation, acid and alkali resistance, high oil resistance, and high mechanical properties.
Therefore, the metal mesh grid 10 of the communication shielding wire provided by this embodiment is suitable for shielding interference in a low frequency range, the metal foil shielding layer 8 is suitable for shielding interference in a high frequency range, and meanwhile, external electromagnetic interference is effectively prevented from entering the wire and internal signals are prevented from radiating out to interfere with the operation of other devices through the principles of reflection, absorption and skin effect of electromagnetic waves, the ground wire 9 is arranged between the metal foil shielding layer 8 and the metal mesh grid 10, and external interference signals can be guided into the ground by the ground wire 9. Through setting up metal mesh grid 10, metal foil shielding layer 8 and ground wire 9, the cooperation prevents the transmission data of shielded communication line receives external electromagnetic interference and radio frequency interference's influence, has guaranteed signal transmission's integrality, improves transmission quality and data information transmission's efficiency. The cable core part is provided with the first filling rope 1 to ensure the toughness and flexibility of the shielding communication wire and prolong the service life of the shielding communication wire, the supporting framework 5 is attached to the core wire group to support and isolate the core wire group, so that mutual extrusion between the core wire groups can be avoided, the fireproof layer 6 is filled in the gap of the cable core part to ensure that the cable core part has a complete and firmer structure and ensures the fireproof performance, and the wrapping layer 7 is also arranged to wrap the cable core part to ensure the stability of the structure of the cable core part, and the moisture-proof layer 11 is arranged to effectively prevent the invasion of moisture and humidity, so that the structural stability of the cable core part, the moisture-proof layer 11 and the outer sheath protect the metal woven mesh 10, the metal foil shielding layer 8 and the ground wire 9 through the connection and the matching among all parts of the shielding communication wire, guaranteed shielding effect of shielding communication line makes shielding communication line has possessed fire prevention, dampproofing performance, has improved shielding communication line structure's integrality, has improved the life of electric wire.
The above description is only for the specific embodiments of the present invention, but it should be understood by those skilled in the art that the present invention is only by way of example, and the scope of the present invention is defined by the appended claims. Therefore, the equivalent changes made in the claims of the present invention still belong to the scope covered by the present invention.
Claims (10)
1. A shielding communication line is characterized by comprising a cable core part, a wrapping layer, a metal foil shielding layer, a metal mesh grid, a moisture-proof layer and a sheath layer from inside to outside, wherein the cable core part comprises a first filling rope, a supporting framework, four core wire groups and a fireproof layer, the first filling rope is arranged at the center of the shielding communication line, the core wire groups are uniformly arranged along the circumferential direction of the shielding communication line by taking the first filling rope as the center and comprise a pair of core wires and an insulating layer, the pair of core wires are mutually twisted in pair to form a pair of twisted core wires, the insulating layer coats the pair twisted core wires, the supporting framework is quadrilateral, the supporting framework coats the first filling rope, the four sides of the supporting framework are respectively attached to the outer sides of the core wire groups, and the fireproof layer is filled in gaps of the cable core part, the shielding communication wire further comprises a ground wire, and the ground wire is arranged between the metal foil shielding layer and the metal woven mesh.
2. The shielded communication wire of claim 1, wherein the metal mesh grid is an aluminum magnesium mesh grid.
3. The shielded communication cable of claim 1, wherein the support frame is arcuate on all four sides and is star-shaped.
4. The shielded communication wire of claim 1, wherein the core wire comprises a conductor, the conductor being an oxygen-free copper conductor.
5. The shielded communication cable of claim 4, wherein the core further comprises a shielding layer, the shielding layer is attached to the outside of the core, and the shielding layer is an MDPE shielding layer.
6. The shielded communication line of claim 1, wherein the first filler cord is a first flexible filler cord.
7. The shielded communication wire of claim 1, wherein the set of core wires further comprises at least a second filler cord, the second filler cord being disposed in the interstices of the set of core wires.
8. The shielded communication wire of any one of claims 1 to 7, wherein the wrapping layer is a flame-retardant alkali-free glass fiber tape.
9. The shielded communication wire of claim 8, wherein the moisture barrier is a layer of semi-conductive water blocking tape.
10. The shielded communication line of claim 8, wherein the jacket layer is a cross-linked polyethylene jacket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921758512.9U CN210575250U (en) | 2019-10-18 | 2019-10-18 | Shielding communication line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921758512.9U CN210575250U (en) | 2019-10-18 | 2019-10-18 | Shielding communication line |
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| Publication Number | Publication Date |
|---|---|
| CN210575250U true CN210575250U (en) | 2020-05-19 |
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| CN201921758512.9U Active CN210575250U (en) | 2019-10-18 | 2019-10-18 | Shielding communication line |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112712919A (en) * | 2020-12-21 | 2021-04-27 | 深圳金信诺高新技术股份有限公司 | Shielded wire harness and method for producing shielded wire harness |
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2019
- 2019-10-18 CN CN201921758512.9U patent/CN210575250U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112712919A (en) * | 2020-12-21 | 2021-04-27 | 深圳金信诺高新技术股份有限公司 | Shielded wire harness and method for producing shielded wire harness |
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