CN203325521U - Anti-interference high-electrical property digital cable - Google Patents
Anti-interference high-electrical property digital cable Download PDFInfo
- Publication number
- CN203325521U CN203325521U CN2013202778653U CN201320277865U CN203325521U CN 203325521 U CN203325521 U CN 203325521U CN 2013202778653 U CN2013202778653 U CN 2013202778653U CN 201320277865 U CN201320277865 U CN 201320277865U CN 203325521 U CN203325521 U CN 203325521U
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- twisted
- polyvinyl chloride
- cable
- twisted pair
- digital cable
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Abstract
The utility model discloses an anti-interference high-electrical property digital cable. The anti-interference high-electrical property digital cable comprises eight copper conductors wrapped with polyethylene layers respectively, and every two of the eight copper conductors are twisted into a twisted pair. A polyvinyl chloride layer is wrapped on the first twisted pair, the second twisted pair, the third twisted pair and the fourth twisted pair, and the first twisted pair, the second twisted pair, the third twisted pair and the fourth twisted pair are arranged parallelly and are located in a same plane. The adjacent twisted pairs are isolated by the polyvinyl chloride layer, an outer sheath layer is wrapped on the outer surface of the polyvinyl chloride layer, and a metal braided layer is arranged between the outer sheath layer and the polyvinyl chloride layer. The anti-interference high-electrical property digital cable of the utility model effectively solves the problem that the pitches of the wire pairs in the conventional digital cable change due to stretching, thereby improving the electrical property indexes of the cable substantially.
Description
Technical field
The utility model relates to the digital cable field, is specifically related to a kind of anti-interference high electric-property digital cable.
Background technology
Common indoor digital cable is that single line is through twisting operation, then several groups of strands will be twisted into certain laying up pitch circular configuration to line and carry out sheath again, this structure not only can be because workmen's pulling force is excessive, undue force causes the pitch that the cable inner wire is right to change because of stretching when the construction wiring, thereby have influence on digital cable to every electric transmission performance, and the cable of this circular configuration also is unfavorable for indoor wiring and finishing.
The structure of cable: the structure of common digital cable is that single line is through twisting to using the circular configuration of PVC as sheath after stranding, in mainly be laid in residence interior trims netting twine or computer local area machine room.
Due to the limitation of the above-mentioned circular configuration of cable, in residence interior trims netting twine or computer local area machine room, the wiring of cable and finishing bring many inconvenience, and the digital cable of suffer distortion, bending during construction, processing roughly, cause quality unstable, unreliable; And lack certain ability that prevents from affecting because of the force-extension ability serviceability.
Summary of the invention
The utility model purpose is to provide a kind of anti-interference high electric-property digital cable, the high electric-property digital cable of this environmental protection adopts non-circular structure, effectively solve the variation that the right pitch in available data cable interior lines occurs because of stretching, thereby greatly improved every electrical performance indexes of cable; Secondly, owing to adopting the flat cable structure, product is pair twist direct sheath later in process of production, does not need stranding, and operation is simplified to some extent, greatly reduces production cycle and cost.
For achieving the above object, the technical solution adopted in the utility model is: a kind of anti-interference high electric-property digital cable comprises: eight copper conductors that are coated with polyethylene layer, and these eight copper conductors are stranded formation four twisted pair wires pair in twos; One polyvinyl chloride layer be coated on described four twisted pair wire centering the first twisted wires to, the second twisted wire to, the 3rd twisted wire to the 4th twisted wire pair;
This first twisted wire to, the second twisted wire to, the 3rd twisted wire to the 4th twisted wire to parallel placement and be positioned at same plane, adjacent twisted wire between by described polyvinyl chloride layer isolation; One external sheath layer is coated on described polyvinyl chloride layer outer surface, between this external sheath layer and polyvinyl chloride layer, is provided with wire sheathing.
It is as follows that technique scheme is further improved technical scheme:
In such scheme, in described polyvinyl chloride layer, also be coated with and tear rope.
Because technique scheme is used, the utility model compared with prior art has following advantages and effect:
The anti-interference high electric-property digital cable of the utility model, adopt non-circular structure, effectively solved the variation that the right pitch in available data cable interior lines occurs because of stretching, thereby greatly improved every electrical performance indexes of cable; Secondly, owing to adopting the flat cable structure, product is pair twist direct sheath later in process of production, does not need stranding, and operation is simplified to some extent, greatly reduces production cycle and cost.
The accompanying drawing explanation
Accompanying drawing 1 is the anti-interference high electric-property digital cable structural representation of the utility model.
In above accompanying drawing: 1, polyethylene layer; 2, copper conductor; 3, polyvinyl chloride layer; 4, the first twisted wire pair; 5, the second twisted wire pair; 6, the 3rd twisted wire pair; 7, the 4th twisted wire pair; 8, tear rope; 9, external sheath layer; 10, wire sheathing.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described:
Embodiment: a kind of anti-interference high electric-property digital cable comprises: eight copper conductors 2 that are coated with polyethylene layer 1, and these eight copper conductors 2 are stranded formation four twisted pair wires pair in twos; One polyvinyl chloride layer 3 be coated on described four twisted pair wire centering the first twisted wires to the 4, second twisted wire to the 5, the 3rd twisted wire to the 6 and the 4th twisted wire to 7;
This first twisted wire to the 4, second twisted wire to the 5, the 3rd twisted wire to 6 with the 4th twisted wire to 7 parallel placements and be positioned at same plane, adjacent twisted wire between by described polyvinyl chloride layer 3 isolation.One external sheath layer 9 is coated on described polyvinyl chloride layer 3 outer surfaces, between this external sheath layer 9 and polyvinyl chloride layer 3, is provided with wire sheathing 10.
Also be coated with in above-mentioned polyvinyl chloride layer 3 and tear rope 8.
On the basis that guarantees the digital cable transmission characteristic, by changing its existing circular configuration, the strand environment-friendly PVC material high to the heat-resisting proof voltage of rear direct use is as the sheath of cable, effectively solve the variation that the right pitch in data cable interior lines occurs because of stretching, thereby improved greatly every electrical performance indexes of cable; Use high electrically environment-friendly PVC material when sheath, there is high resistance, ageing-resistant good stability, the crooked excessive right sheaf space in cable interior lines that changes of cable in the time of can effectively preventing because of construction environment friendly and pollution-free the time, cause the decline of cable Noise Resistance Ability; Therefore, when guaranteeing the stable transmission performance of cable, coefficient of safety is higher, installs, lay conveniently.
The develop of the utility model technology, when guaranteeing digital cable Transmission characteristic, break through the circular configuration of traditional cable, effectively solve the right pitch in digital cable interior lines and changed because of stretching, had a strong impact on the indexs such as stretching of cable cross-talk (NEXT, FEXT), conductor and insulating barrier; Conveniently install, lay, and it is less to take up room, electrical property, ageing properties variation with temperature are little, environment friendly and pollution-free, have promotion prospect and market value widely.
On the basis that guarantees the digital cable transmission characteristic, by changing its circular configuration, the strand environment-friendly PVC material high to the heat-resisting proof voltage of rear direct use is as the sheath of cable, effectively solve the variation that the right pitch in data cable interior lines occurs because of stretching, thereby improved greatly every electrical performance indexes of cable; Use high electrically environment-friendly PVC material when sheath, there is high resistance, ageing-resistant good stability, the crooked excessive right sheaf space in cable interior lines that changes of cable in the time of can effectively preventing because of construction environment friendly and pollution-free the time, cause the decline of cable Noise Resistance Ability; Therefore, when guaranteeing the stable transmission performance of cable, coefficient of safety is higher, installs, lay conveniently.
The develop of the utility model technology, when guaranteeing digital cable Transmission characteristic, break through the circular configuration of traditional cable, effectively solve the right pitch in digital cable interior lines and changed because of stretching, had a strong impact on the indexs such as stretching of cable cross-talk (NEXT, FEXT), conductor and insulating barrier; Conveniently install, lay, and it is less to take up room, electrical property, ageing properties variation with temperature are little, environment friendly and pollution-free, have promotion prospect and market value widely.
The development process of the utility model technology is as follows:
The content of the utility model exploitation:
The main performance index of finished cable
Conductor DC resistance (20 ℃) :≤88.36 Ω/km;
The characteristic impedance of cable (20 ℃): 100 ± 15 Ω;
The mutual capacitance of cable :≤52 nF/km;
The insulation resistance of cable: >=10000 M Ω km.
Above-described embodiment is only explanation technical conceive of the present utility model and characteristics, and its purpose is to allow the person skilled in the art can understand content of the present utility model and implement according to this, can not limit protection range of the present utility model with this.All equivalences of doing according to the utility model Spirit Essence change or modify, within all should being encompassed in protection range of the present utility model.
Claims (2)
1. an anti-interference high electric-property digital cable is characterized in that: comprising: eight copper conductors (2) that are coated with polyethylene layer (1), and these eight copper conductors (2) are stranded formation four twisted pair wires pair in twos; One polyvinyl chloride layer (3) be coated on described four twisted pair wire centering the first twisted wires to (4), the second twisted wire to (5), the 3rd twisted wire to (6) and the 4th twisted wire to (7);
This first twisted wire to (4), the second twisted wire to (5), the 3rd twisted wire to (6) with the 4th twisted wire to (7) parallel placement and be positioned at same plane, adjacent twisted wire between by described polyvinyl chloride layer (3) isolation; One external sheath layer (9) is coated on described polyvinyl chloride layer (3) outer surface, between this external sheath layer (9) and polyvinyl chloride layer (3), is provided with wire sheathing (10).
2. high electric-property digital cable according to claim 1, is characterized in that: also be coated with in described polyvinyl chloride layer (3) and tear rope (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202778653U CN203325521U (en) | 2013-05-21 | 2013-05-21 | Anti-interference high-electrical property digital cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202778653U CN203325521U (en) | 2013-05-21 | 2013-05-21 | Anti-interference high-electrical property digital cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203325521U true CN203325521U (en) | 2013-12-04 |
Family
ID=49664836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202778653U Expired - Lifetime CN203325521U (en) | 2013-05-21 | 2013-05-21 | Anti-interference high-electrical property digital cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203325521U (en) |
-
2013
- 2013-05-21 CN CN2013202778653U patent/CN203325521U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131204 |