CN211742692U - Twisted-pair type shielding electric wire - Google Patents
Twisted-pair type shielding electric wire Download PDFInfo
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- CN211742692U CN211742692U CN202020853697.8U CN202020853697U CN211742692U CN 211742692 U CN211742692 U CN 211742692U CN 202020853697 U CN202020853697 U CN 202020853697U CN 211742692 U CN211742692 U CN 211742692U
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Abstract
The utility model discloses a pair twist type shielded wire, including copper core wire, polyvinyl chloride lag, fire-retardant layer and anti-compression layer, the inside central point department of putting of polyvinyl chloride lag evenly is provided with the copper core wire, the outside of copper core wire has all wrapped up the insulating cover, and the outside of insulating cover evenly twines and wraps up in with the aluminium foil wheat and draw the shielding layer, the outside that the shielding layer was drawn to the aluminium foil wheat is provided with naked copper weaving layer, the inside one side that is close to the aluminium foil wheat and draws the shielding layer of polyvinyl chloride lag is provided with fire-retardant layer, the anti-compression layer is kept away from the aluminium foil wheat and is provided with the waterproof layer in the polyvinyl chloride lag that shielding layer one side was drawn to the aluminium foil wheat, and the even coating in the outside of polyvinyl chloride lag has glass. The utility model discloses an install polyvinyl chloride lag, polyvinyl chloride lag's inside evenly is provided with the copper core wire, and the copper core wire is provided with threely, is the heliciform pair twist winding between the copper core wire for this shielded wire has possessed the pliable and tough characteristic of antitorque twist, and structural strength promotes greatly, and through twisting the back, resets easily, lowers the short circuit risk.
Description
Technical Field
The utility model relates to a shielded wire technical field specifically is a pair twist type shielded wire.
Background
With the continuous enlargement of the scales of industries such as the Chinese power industry, the data communication industry, the urban rail transit industry, the automobile industry, the shipbuilding industry and the like, the demand on electric wires and cables is rapidly increased, and the shielded cable is a transmission line which wraps signal wires by using an aluminum foil mylar shielding layer and ensures the transmission performance of a system in an electromagnetic interference environment, but most of the existing shielded electric wires have some problems, specifically the following problems;
1. the existing shielding electric wire is mostly in a single copper core wire structure, the structural strength and the anti-distortion performance of the shielding electric wire are poor, and the anti-bending performance is poor;
2. the existing shielding electric wire has poor flame retardant property and waterproof property and low safety;
3. the existing shielding electric wire is poor in pressure resistance, easy to damage when being extruded and collided by the outside, and short in service life.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a pair twist type shielded wire to solve the intensity that proposes in the above-mentioned background art and the relatively poor, the security of antitorque distortion performance is lower and life is shorter problem.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a pair twist type shielded wire, includes copper core wire, polyvinyl chloride lag, fire-retardant layer and anti-compression layer, the inside central point department of putting of polyvinyl chloride lag evenly is provided with the copper core wire, the outside of copper core wire has all wrapped up the insulating cover, and the outside of insulating cover evenly twines and wraps up in with the aluminium foil wheat and draw the shielding layer, the outside that the shielding layer was drawn to the aluminium foil wheat is provided with naked copper weaving layer, the inside one side that is close to the aluminium foil wheat and draws the shielding layer of polyvinyl chloride lag is provided with fire-retardant layer, and fire-retardant layer keeps away from the polyvinyl chloride lag that the shielding layer one side was drawn to the aluminium foil wheat and is provided with anti-compression layer, anti-compression layer keeps away from the polyvinyl chloride lag that the shielding layer one side was drawn to the aluminium foil wheat and is provided with the waterproof layer.
Preferably, the quantity of copper core wire sets up to 3, and is the heliciform twist-pair winding between the copper core wire, improves this shielded wire's structural strength and antitorque distortion performance.
Preferably, the inside on fire-retardant layer evenly is provided with a support section of thick bamboo, and supports a section of thick bamboo and be the concentric circles structural distribution, the inside even packing that supports a section of thick bamboo has the fire prevention putty, and the material of fire prevention putty is polycarbonate, improves the support nature of polyvinyl chloride lag, improves the security of this shielded wire simultaneously.
Preferably, the inside of waterproof layer evenly is filled with the lock drop, and the material of lock drop is the polymer resin granule, avoids external water infiltration.
Preferably, the equidistant distribution in the inside on resistance to compression layer has the resistance to compression component, the resistance to compression component is almag material, and the resistance to compression component all is circular hollow structure, the inside both ends of resistance to compression component all are provided with the reset spring silk, and the reset spring silk improves this shielded wire's compressive property about resistance to compression component symmetric distribution.
Preferably, the side wall of the compression-resistant element is uniformly provided with the elastic balls, and the elastic balls are made of rubber materials with higher elastic coefficients and play a role in buffering when being extruded and collided by the outside.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) this pair twist type shielded wire is through installing the polyvinyl chloride lag, the inside of polyvinyl chloride lag evenly is provided with the copper core wire, the copper core wire is provided with threely, it twists the winding to be the heliciform between the copper core wire, make this shielded wire possess antitorque flexible characteristic, structural strength promotes greatly, after twisting, reset easily, reduce the short circuit risk, be difficult to cause the damage, the outside of copper core wire has all been wrapped up and has been insulated the cover, insulating cover adopts polyvinyl chloride high temperature compression molding, it is good to have electrical properties, play certain guard action to the copper core wire.
(2) This pair twist type shielded wire is through installing fire-retardant layer, the inside on fire-retardant layer evenly is provided with a supporting cylinder, a supporting cylinder is concentric circles structural distribution, the support intensity of this shielded wire has been improved, it has the fire prevention putty to evenly fill in the inside of a supporting cylinder simultaneously, the material of fire prevention putty is polycarbonate, can effectually prevent stretching of intensity of a fire when meetting open fire, prevent this shielded wire burning, the security improves, the device is through being provided with the waterproof layer simultaneously, the inside even packing of waterproof layer has the lock drop, the lock drop is the polymer resin granule, avoid outside water infiltration inside, cause the short circuit.
(3) This pair twist type shielded wire is through installing the resistance to compression layer, the inside evenly distributed on resistance to compression layer has the resistance to compression component, the resistance to compression component all is hollow structure, and the inside both ends of resistance to compression component all are provided with the reset spring silk, in addition, the inside align to grid of resistance to compression component lateral wall has the bouncing ball, make the reset spring silk compressed when receiving external extrusion collision impact force, absorb partly impact force through the flexible resilience of reset spring silk, play the effect of buffering, the bouncing ball is the rubber material that elasticity coefficient is high, further increase this shielded wire's compressive property.
Drawings
Fig. 1 is a schematic perspective view of the present invention;
fig. 2 is a schematic side view of the cross-sectional structure of the present invention;
FIG. 3 is a schematic cross-sectional view of the compression-resistant component of the present invention;
fig. 4 is an enlarged cross-sectional structure diagram of the utility model at a in fig. 2.
In the figure: 1. a copper core wire; 2. an insulating sleeve; 3. an aluminum foil mylar shield layer; 4. a polyvinyl chloride protective sleeve; 5. a bare copper braid layer; 6. a flame retardant layer; 7. a glass flake anticorrosive coating; 8. water locking beads; 9. a waterproof layer; 10. a compression resistant element; 11. a pressure resistant layer; 12. a resilient ball; 13. a return spring wire; 14. a support cylinder; 15. and (5) fireproof blocking.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides an embodiment: a pair-twisted type shielding electric wire comprises copper core wires 1, a polyvinyl chloride protective sleeve 4, a flame retardant layer 6 and a compression resistant layer 11, wherein the copper core wires 1 are uniformly arranged at the central position inside the polyvinyl chloride protective sleeve 4, the outer sides of the copper core wires 1 are wrapped with insulating sleeves 2, the number of the copper core wires 1 is set to be 3, and the copper core wires 1 are spirally twisted in pair;
the shielding wire has the flexibility of distortion resistance, the structural strength is greatly improved, and the shielding wire is easy to reset after being twisted, reduces the short-circuit risk and is not easy to damage;
an aluminum foil mylar shielding layer 3 is uniformly wound and wrapped on the outer side of the insulating sleeve 2, a bare copper braided layer 5 is arranged on the outer side of the aluminum foil mylar shielding layer 3 to prevent interference signals from entering an inner layer, a flame-retardant layer 6 is arranged on one side, close to the aluminum foil mylar shielding layer 3, in the polyvinyl chloride protective sleeve 4, supporting cylinders 14 are uniformly arranged in the flame-retardant layer 6, the supporting cylinders 14 are distributed in a concentric circle structure, fireproof blocking materials 15 are uniformly filled in the supporting cylinders 14, and the fireproof blocking materials 15 are made of polycarbonate;
when exposed fire occurs, the spread of fire can be effectively prevented, the shielded wire is prevented from burning, and the safety is improved;
a pressure-resistant layer 11 is arranged in the polyvinyl chloride protective sleeve 4 on the side, away from the aluminum foil Mylar shielding layer 3, of the flame-retardant layer 6, pressure-resistant elements 10 are distributed in the pressure-resistant layer 11 at equal intervals, the pressure-resistant elements 10 are made of aluminum-magnesium alloy, the pressure-resistant elements 10 are all in a circular hollow structure, reset spring wires 13 are arranged at two ends of the interior of each pressure-resistant element 10, and the reset spring wires 13 are symmetrically distributed about the pressure-resistant elements 10;
when the spring is extruded and collided by the outside, the reset spring wire 13 is compressed by impact force, and a part of the impact force is absorbed through the telescopic rebound of the reset spring wire 13 to play a role in buffering;
the elastic balls 12 are uniformly arranged in the side wall of the pressure-resistant element 10, and the elastic balls 12 are made of rubber with higher elastic coefficient, so that the pressure resistance of the shielded wire is further improved;
a waterproof layer 9 is arranged in the polyvinyl chloride protective sleeve 4 on the side, away from the aluminum foil mylar shielding layer 3, of the pressure resistant layer 11, water locking beads 8 are uniformly filled in the waterproof layer 9, and the water locking beads 8 are made of polymer resin particles, so that the phenomenon that external water penetrates into the interior to cause short circuit is avoided;
and the outer side of the polyvinyl chloride protective sleeve 4 is uniformly coated with the glass flake anticorrosive coating 7, and the service life of the shielding electric wire is effectively prolonged by utilizing the wear-resisting and anticorrosive characteristics of the glass flake anticorrosive coating 7.
The working principle is as follows: when in use, the number of the copper core wires 1 is three, the copper core wires 1 are twisted in a spiral shape, so that the shielded wire has the flexibility of distortion resistance, the structural strength is greatly improved, the twisted copper core wires are easy to reset, the short circuit risk is reduced, and the shielded wire is not easy to damage, the outer sides of the copper core wires 1 are all wrapped with the insulating sleeves 2, the insulating sleeves 2 are molded by adopting polyvinyl chloride at high temperature, the shielded wire has excellent electrical performance and plays a certain role in protecting the copper core wires 1, the polyvinyl chloride protecting sleeves 4 are internally provided with the flame-retardant layers 6, the flame-retardant layers 6 are internally and uniformly provided with the supporting cylinders 14, the supporting cylinders 14 are distributed in a concentric circle structure, the supporting strength of the shielded wire is improved, meanwhile, the supporting cylinders 14 are uniformly filled with the fireproof blocking materials 15, the fireproof blocking materials 15 are made of polycarbonate, and the spread of fire can be effectively prevented when open fire occurs, prevent this shielded wire burning, improve the security, polyvinyl chloride lag 4 inside still is provided with resistance to compression layer 11, resistance to compression component 10 of inside evenly distributed of resistance to compression layer 11, resistance to compression component 10 all is hollow structure, and the both ends in resistance to compression component 10 all are provided with reset spring silk 13, make the impact force make reset spring silk 13 compressed when receiving external extrusion collision, absorb some impact force through the flexible resilience of reset spring silk 13, play the effect of buffering, the inside evenly arranged of resistance to compression component 10 lateral wall has elastic ball 12, elastic ball 12 is the rubber material that elasticity coefficient is high, further increase this shielded wire's compressive property, the while installation is through being provided with waterproof layer 9, the inside evenly filled of waterproof layer 9 has lock water bead 8, lock water bead 8 is the polymer resin granule, avoid external water infiltration inside, cause the short circuit, glass flake anticorrosive coatings 7 are uniformly coated on the outer sides of the polyvinyl chloride protective sleeves 4, and the service life of the shielding electric wire is effectively prolonged by utilizing the wear-resistant and corrosion-resistant characteristics of the glass flake anticorrosive coatings 7.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. The utility model provides a pair twist type shielded wire, includes copper core wire (1), polyvinyl chloride lag (4), fire-retardant layer (6) and resistance to compression layer (11), its characterized in that: the central position inside the polyvinyl chloride protective sleeve (4) is uniformly provided with copper core wires (1), the outer sides of the copper core wires (1) are wrapped with insulating sleeves (2), and the outer side of the insulating sleeve (2) is uniformly wrapped with an aluminum foil Mylar shielding layer (3), a bare copper braid layer (5) is arranged on the outer side of the aluminum foil mylar shielding layer (3), a flame-retardant layer (6) is arranged on one side of the inner part of the polyvinyl chloride protective sleeve (4) close to the aluminum foil mylar shielding layer (3), and a pressure resistant layer (11) is arranged in the polyvinyl chloride protective sleeve (4) at one side of the flame retardant layer (6) far away from the aluminum foil mylar shielding layer (3), a waterproof layer (9) is arranged in the polyvinyl chloride protective sleeve (4) at one side of the pressure-resistant layer (11) far away from the aluminum foil mylar shielding layer (3), and the outer side of the polyvinyl chloride protective sleeve (4) is uniformly coated with a glass flake anticorrosive coating (7).
2. The twisted pair type shielded electric wire according to claim 1, wherein: the number of the copper core wires (1) is set to be 3, and the copper core wires (1) are twisted in pairs in a spiral manner.
3. The twisted pair type shielded electric wire according to claim 1, wherein: the inside on fire-retardant layer (6) evenly is provided with a support section of thick bamboo (14), and supports a section of thick bamboo (14) and be the concentric circles structural distribution, the inside even packing of a support section of thick bamboo (14) has fire prevention putty (15), and the material of fire prevention putty (15) is polycarbonate.
4. The twisted pair type shielded electric wire according to claim 1, wherein: the waterproof layer (9) is filled with water locking beads (8) uniformly, and the water locking beads (8) are made of polymer resin particles.
5. The twisted pair type shielded electric wire according to claim 1, wherein: the utility model discloses a resistance to compression layer (11) is including resistance to compression element (10), the equal interval distribution in the inside of resistance to compression layer (11) has resistance to compression element (10), resistance to compression element (10) are almag material, and resistance to compression element (10) all are circular hollow structure, the both ends of resistance to compression element (10) inside all are provided with reset spring silk (13), and reset spring silk (13) are about resistance to compression element (10) symmetric distribution.
6. The twisted pair type shielded electric wire according to claim 5, wherein: the side wall of the compression-resistant element (10) is uniformly provided with elastic balls (12), and the elastic balls (12) are made of rubber materials with higher elastic coefficients.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020853697.8U CN211742692U (en) | 2020-05-20 | 2020-05-20 | Twisted-pair type shielding electric wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020853697.8U CN211742692U (en) | 2020-05-20 | 2020-05-20 | Twisted-pair type shielding electric wire |
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| Publication Number | Publication Date |
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| CN211742692U true CN211742692U (en) | 2020-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020853697.8U Active CN211742692U (en) | 2020-05-20 | 2020-05-20 | Twisted-pair type shielding electric wire |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114530283A (en) * | 2020-11-23 | 2022-05-24 | 黄王鑫如 | Wire sheath |
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2020
- 2020-05-20 CN CN202020853697.8U patent/CN211742692U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114530283A (en) * | 2020-11-23 | 2022-05-24 | 黄王鑫如 | Wire sheath |
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