CN205230658U - Eight types of line shielding structure - Google Patents
Eight types of line shielding structure Download PDFInfo
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- CN205230658U CN205230658U CN201521007093.7U CN201521007093U CN205230658U CN 205230658 U CN205230658 U CN 205230658U CN 201521007093 U CN201521007093 U CN 201521007093U CN 205230658 U CN205230658 U CN 205230658U
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Abstract
The utility model belongs to the technical field of the cable apparatus, especially, relate to an eight types of line shielding structure. The utility model discloses an eight types of line shielding structure, eight types of line shielding structure include four the group wire pairs, four group's wire pairs be the pair twist structure and distribute set up, the wire pair of every group includes two single line conductors, the outside parcel of every single line conductor has the insulating layer, the outside mode cladding of adopting around the package of every group wire pair has the aluminium foil, makes the aluminium foil along the pair twist structure cladding of wire pair, aluminium foil outside adding is equipped with one deck hot melt aluminium foil tape, four group's wire pairs pass through weaving layer parcel, the outside of weaving layer be equipped with the one deck sheath. The beneficial effects of the utility model are that: the gap that heals up that makes aluminum foil pack cover reduces to minimum, gains the maximize of electromagnetic interference resistance effect, makes the laminating of aluminium foil and wire pair inseparabler, has improved the stability of wire pair structure, reduces the probability that the signal peak produced.
Description
Technical field
The utility model belongs to cable apparatus technical field, particularly relates to a kind of eight class line shielding constructions.
Background technology
At conventional line in shielded cable, aluminum foil shielded mode is generally based on vertical bag, but this structural design, be applicable to the product of below 1GHz.Due to vertical pack arrangement, the shaping rear neither one external force of aluminium foil makes it fix, therefore aluminium foil has the release of a power after shaping, healing up of aluminium foil is easily stuck up out, when signal frequency reaches more than 1GHz, suitable short of wavelength, to such an extent as to the screen of vertical pack arrangement heals up, gap has been enough to more than 1GHz signal wavelength and has passed, signals leakiness is caused to be formed, the distortion of signal.CAT8 test frequency reaches 2GHz, and the aluminium foil of traditional vertical packet mode is coated, and the signal wavelength of 2GHz has been enough to healing up through aluminium foil under vertical packet mode, causes signals leakiness, and signal produces spike.
Summary of the invention
The purpose of this utility model is to solve above-described technical problem, a kind of gap that heals up making aluminium foil coated is provided to reduce to minimum, the internal leakage signal of line is made to be reduced to minimum degree, ensure the integrality of signal, obtain the maximization of anti-electromagnetic interference effect, make aluminium foil and line to laminating more closely, improve the stability of line to structure, reduce by eight class line shielding constructions of the probability that signal peak produces, its technical scheme is as follows:
Eight class line shielding constructions, it is characterized in that, eight described class line shielding constructions comprise four groups of lines pair, four groups of described lines are arranged in pair twist structure distribution, the line often organized is to comprising two single line conductors, and each single line conductor outer wrap has insulating barrier, and the outside often organizing line right adopts wrapped mode to be coated with aluminium foil, make aluminium foil coated along the pair twist structure that line is right, aluminium foil outside is equipped with one deck hot melt aluminium foil band; Four groups of described lines wrap up by braid, and the outside of described braid is provided with one deck sheath.
Optimal way is, described insulating barrier comprises internal layer, intermediate layer and skin, and described internal layer is linea low density PE layer, and internal layer contacts with single line conductor, and described intermediate layer is foaming structure layer, and described skin is high density PE layer.
Optimal way is, described aluminium foil adopts that bilayer is oppositely wrapped is often organizing line to outside.
Optimal way is, described braid is tinned copper braid.
The eight class line shielding constructions that the utility model provides, in order to ensure the qualified of cross-talk, 4 groups of lines to the structure adopting pair twist, and in order to ensure minimizing of electromagnetic interference influence between line pair, use aluminum foil shielded structure; And in order to the joint gap making aluminium foil coated little as far as possible, then adopt the coated aluminium foil of wrapped mode, make aluminium foil along line to coated tight of pair twist structure, the Duplication of aluminium foil reaches more than 40% in addition; At aluminium foil additional one deck hot melt aluminium foil band, the clad structure of aluminium foil can be fixed, deformation can not be produced because of follow-up operation, and the gap that internal layer aluminium foil heals up is capped completely, make the leakage of line to signal be reduced at utmost; Prevent outside electromagnetic interference, adopt total shielding construction, select tin-coated copper braided overall-shielding, shielding rate >=60%, obtain the maximization of anti-electromagnetic interference effect, last cable core squeezes the outer quilt of one deck outward, protection cable.
The utility model further have employed the single line structure of skin foam skin to insulating barrier: the internal layer (endothelium) of insulating barrier adopts linea low density PE to improve insulation and the adhesive force of single line conductor on the one hand, makes the structure of following process conductor and insulation more stable; The intermediate layer of insulating barrier adopts foaming structure to reduce the dielectric constant of insulation on the one hand, reduces the decay of signal; The skin (crust) of insulation is high density PE on the one hand, improves the anti-pressure ability of single line, the single line conductor distortion preventing the pressure of subsequent handling from causing.
The further line of the utility model adopts wrapped pattern to shielding: make aluminium foil and line to laminating more closely, improve the stability of line to structure, reduce the probability that signal peak produces.
The further line of the utility model uses double-deck reverse wrapped aluminium foil to shielding construction: the possibility of leakage signal is dropped to minimum level, greatly improves the index of NEXT.
The utility model further adopts unwrapping wire back twist cabler stranding: make line to before stranding sizing, line, to remaining structure and stressed constant, the structure that protective wire is right to greatest extent, prevents line to the generation destroying the signal peak caused.
The beneficial effects of the utility model are: the gap that heals up making aluminium foil coated reduces to minimum, the internal leakage signal of line is made to be reduced to minimum degree, ensure the integrality of signal, obtain the maximization of anti-electromagnetic interference effect, make aluminium foil and line tightr to laminating, improve the stability of line to structure, reduce the probability that signal peak produces.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model.
Fig. 2 is the schematic diagram of insulating barrier.
Embodiment
Embodiment is illustrated below in conjunction with Fig. 1 and Fig. 2:
As depicted in figs. 1 and 2, eight class line shielding constructions, eight described class line shielding constructions comprise four groups of lines to 1, four groups of described lines are arranged in pair twist structure distribution 1, the line often organized comprises two single line conductors 2 to 1, and each single line conductor 2 outer wrap has insulating barrier 3, often organize line to 1 outside adopt wrapped mode to be coated with aluminium foil 4, make aluminium foil 4 coated to the pair twist structure of 1 along line, aluminium foil 4 outside is equipped with one deck hot melt aluminium foil band 5; Four groups of described lines are wrapped up by braid 61, and the outside of described braid 6 is provided with one deck sheath 7.
Optimal way is, described insulating barrier 3 comprises internal layer 31, intermediate layer 32 and outer 33, and described internal layer 31 is linea low density PE layer, and internal layer 31 contacts with single line conductor 2, and described intermediate layer 32 is foaming structure layer, and described skin 33 is high density PE layer.
Optimal way is, described aluminium foil adopts that bilayer is oppositely wrapped is often organizing line to outside.
Optimal way is, described braid is tinned copper braid.
Reach 2GHz for CAT8 test frequency, the aluminium foil of traditional vertical packet mode is coated, and the signal wavelength of 2GHz has been enough to healing up through aluminium foil under vertical packet mode, causes signals leakiness, and signal produces spike.Therefore we reduce the coated size of healing up of aluminium foil as much as possible.The mode that aluminium foil is coated, change into wrapped from vertical bag, make the structure of aluminium foil and twisted pair wire more fit like this, heal up and will diminish.In addition structurally, then outside aluminium foil, increase one deck self-adhesion aluminium foil strip hot in nature, the structure making aluminium foil coated is on the one hand more stable, and aluminium foil heals up also can not produce deformation in subsequent handling; On the other hand internal layer aluminium foil is healed up to be completely covered, to make the internal leakage signal of line be reduced to minimum degree.Consider effectiveness, the additional tin-coated copper braid shielded of cable core, form the data cable structure of S/FTP structure.
In order to ensure the qualified of cross-talk, 4 groups of lines to the structure adopting pair twist, and in order to ensure minimizing of electromagnetic interference influence between line pair, use aluminum foil shielded structure; And in order to the joint gap making aluminium foil coated little as far as possible, then adopt the coated aluminium foil of wrapped mode, make aluminium foil along line to coated tight of pair twist structure, the Duplication of aluminium foil reaches more than 40% in addition; At aluminium foil additional one deck hot melt aluminium foil band, the clad structure of aluminium foil can be fixed, deformation can not be produced because of follow-up operation, and the gap that internal layer aluminium foil heals up is capped completely, make the leakage of line to signal be reduced at utmost; Prevent outside electromagnetic interference, adopt total shielding construction, select tin-coated copper braided overall-shielding, shielding rate >=60%, obtain the maximization of anti-electromagnetic interference effect, last cable core squeezes the outer quilt of one deck outward, protection cable.
Claims (4)
1. eight class line shielding constructions, it is characterized in that, eight described class line shielding constructions comprise four groups of lines pair, four groups of described lines are arranged in pair twist structure distribution, the line often organized is to comprising two single line conductors, and each single line conductor outer wrap has insulating barrier, and the outside often organizing line right adopts wrapped mode to be coated with aluminium foil, make aluminium foil coated along the pair twist structure that line is right, aluminium foil outside is equipped with one deck hot melt aluminium foil band; Four groups of described lines wrap up by braid, and the outside of described braid is provided with one deck sheath.
2. eight class line shielding constructions as claimed in claim 1, it is characterized in that, described insulating barrier comprises internal layer, intermediate layer and skin, described internal layer is linea low density PE layer, internal layer contacts with single line conductor, and described intermediate layer is foaming structure layer, and described skin is high density PE layer.
3. eight class line shielding constructions as claimed in claim 1, is characterized in that, described aluminium foil adopts that bilayer is oppositely wrapped is often organizing line to outside.
4. eight class line shielding constructions as claimed in claim 1, it is characterized in that, described braid is tinned copper braid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521007093.7U CN205230658U (en) | 2015-12-08 | 2015-12-08 | Eight types of line shielding structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521007093.7U CN205230658U (en) | 2015-12-08 | 2015-12-08 | Eight types of line shielding structure |
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| CN205230658U true CN205230658U (en) | 2016-05-11 |
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| CN201521007093.7U Active CN205230658U (en) | 2015-12-08 | 2015-12-08 | Eight types of line shielding structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105390207A (en) * | 2015-12-08 | 2016-03-09 | 浙江兆龙线缆有限公司 | Eight-type cable shielding structure |
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- 2015-12-08 CN CN201521007093.7U patent/CN205230658U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105390207A (en) * | 2015-12-08 | 2016-03-09 | 浙江兆龙线缆有限公司 | Eight-type cable shielding structure |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Shilin Industrial Zone 313215 Zhejiang province Huzhou city Deqing County town Patentee after: Zhejiang megabon interconnect Polytron Technologies Inc Address before: Shilin Industrial Zone 313200 Zhejiang province Huzhou city Deqing County town Zhejiang Zhaolong Cable Co. Ltd. Patentee before: Zhejiang Zhaolong Cable Co., Ltd. |