CN2758943Y - Data cable of pair wire set isolation - Google Patents
Data cable of pair wire set isolation Download PDFInfo
- Publication number
- CN2758943Y CN2758943Y CN 200420054579 CN200420054579U CN2758943Y CN 2758943 Y CN2758943 Y CN 2758943Y CN 200420054579 CN200420054579 CN 200420054579 CN 200420054579 U CN200420054579 U CN 200420054579U CN 2758943 Y CN2758943 Y CN 2758943Y
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- CN
- China
- Prior art keywords
- line group
- data cable
- separation rib
- cable
- rib
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- 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.)
- Expired - Lifetime
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Abstract
The utility model discloses a separate data cable for pair wire groups, which comprises an outer sheath and a plurality of pair wire groups, wherein each pair wire group is formed by the mutual hinge of two insulation core wires; a wire group separating rib is arranged in the outer sheath; the end parts at both sides of the cross section of the wire group separating rib are provided with T-shaped end surfaces which are connected with the wire group separating rib into a whole; the pair wire groups are symmetrically arranged at both sides of the wire group separating rib; the section of the wire group separating rib is in a spumescence structure; the twisted directions of the pair wire groups at both sides of the wire group separating rib are opposite. The data cable has the advantages of stable and reliable structure, round appearance, flexibility, easy bending, convenient installation and excellent electric property.
Description
Technical field
The utility model relates to a kind of data cable, especially the carry high frequency digital signal to line group data cable.
Background technology
Along with the fast development of digitizing technique, computer not only is applied in the various industrial plants in large quantities, and obtains popularizing more widely in all kinds of offices even residential building.The continuous expansion of computer network, extension, and the rapid increase of transmission amount of information make to arrange net to increase progressively with bigger amplitude with the data cable consumption on the one hand; Require data cable to have higher transmission speed, wideer transmission bandwidth on the other hand again, to realize quick, the accurately transmission of information, people press for the more excellent data cable of a kind of electric property
The raising of data cable performance and three important parameters---the good and bad close association of impedance, decay and cross-talk index.At first with regard to impedance, the impedance of data cable mainly is subjected to conductor material around dielectric constant, insulating core linear dimension and to the influence of line group unit length twist number; Impedance to a great extent more with conductor diameter, directly related with the conductor spacing to conductor stable and certain in mutual alignment relation between the line group and the cable.
Another important parameter that influences the data cable performance is decay, and dielectric constant, the characteristic impedance of conductor and the diameter of conductor that surrounds the conductor insulation material depended in decay; All will cause the variation of input impedance to the mutual alignment spacing of line group structure, conductor; Capacitance and pad value depart from its ideal value between conductor, all cause the fluctuation and the decline of cable transmission performance significantly.
Another parameter that influences the data cable performance is a cross-talk.With regard to essence, the essence of cross-talk is that electromagnetic coupled forms the phase mutual interference, it mainly is because the interactive interference that causes between conductor, to the factors such as physical distance between the line group, it depends on the mutual alignment between conductor circuit to a great extent, as to line group spacing constant, to stable state of line group position or the like.
Present data cable has generally comprised some to the line group, and the data cable of standard mostly is to utilize four non-shielding twisted wire cables to line group structure.Only depend on cable jacket to be fixed to the relative position between the line group in this cable, but when cable laying tractive, bending, all will cause displacement and variation, even in the cable knitting cycle, its structural parameters can change also line group relative position.In addition, the fixedly deflation effect of cable jacket also can cause mutually nested to the line group, causes line group spatial joint clearance is diminished or can not get rational assurance.Therefore, the instability of the construction of cable will inevitably cause such as the deterioration of performance index such as impedance, cross-talk and decay, is seriously restricting the raising of data cable operating frequency and data transmission bauds.
In order to improve the transmission performance of available data cable, Chinese patent application (application number 99805867.X) discloses a kind of data cable with crossing skeleton, this crossing skeleton becomes four area of space that hold the line group with separated by spaces in the oversheath, be equipped with a pair of line group in each zone, thereby make the line group to be maintained fixed the position each other in the cable core, also prevented mutually nested to the line group simultaneously.
Yet data cable requires that not only the line group is had fixing position and stable spatial joint clearance; Also requiring data cable should be pliable and tough and easy installation.And this structure of crossing skeleton exactly makes data cable become stiff and very difficult crooked, and is particularly particularly like this under little installation radius situation, lays to the installation of cable and brought great inconvenience.
Again owing to have the positioning performance deficiency between crossing skeleton external diameter and the overcoat, the cable profile is not whole, make skeleton that radially displacement and play takes place in oversheath easily, these cause the factor of very little geometric position or change of shape, all will cause the rapid decline of separation to line group data cable performance.Simultaneously also because crossing skeleton adopts solid construction, on the one hand, this solid skeleton has higher dielectric constant and capacitance, and solid on the other hand skeleton has occupied more to line group surrounding space again, make line group ambient air gap is reduced, be unfavorable for the optimization of whole cable dielectric constant.Therefore, the cable of this structure is restricting the further raising of electric properties such as its impedance, decay and cross-talk.
The utility model content
At the above-mentioned deficiency of existing in prior technology, technical problem to be solved in the utility model provides a kind of data cable that the line group is separated, and not only the construction of cable is reliable and stable for it, and cable is pliable and tough, flexible, and cable profile rounding is stable, and electric property is more excellent.
Another technical problem that will solve of the utility model is to provide a kind of line group dielectric constant the more rational data cable that the line group is separated.
The another technical problem that will solve of the utility model is, the data cable that the line group is separated that provides that a kind of phase adjacency pair line group can be not mutually nested.
In order to solve the problems of the technologies described above, the data cable that the line group is separated of the present utility model comprises oversheath and some to the line group, each is described thoroughly does away with edge heart yearns stranded forming mutually to the line group by two, in described oversheath, be provided with a line group separation rib, the cross section both side ends of this line group separation rib is equipped with the "T"-shaped camber end face that is connected as a single entity with flank, the described both sides that the line group are positioned over symmetrically line group separation rib.
Owing in cable jacket, be provided with line group separation rib, and the line group be positioned at the both sides of separation rib respectively; This structure has strengthened the distance between the line group under the situation that guarantees the outside diameter of cable; The support fixation effect of separation rib makes again line group position is seemed especially stable, can not form displacement and play to the line group, and the construction of cable can keep reliable and stable state.Therefore, this structural shape has guaranteed the stability of cable parameters, makes the operating frequency of cable be improved, and message transmission rate is accelerated.
Owing to adopt this rib-like structure of separation rib, make that the crooked degree of freedom of cable is bigger again, both kept the flexibility of cable, be convenient to cable in various construction and installation of laying under the environment; Also strengthen the stretch-proof extrusion capability of cable, guaranteed the stability of cable length direction structure, improved the robustness of cable, alleviated the weight of cable.
More because the cross section both side ends of line group separation rib is equipped with the T-shape camber end face that is connected as a single entity with flank.This structure has strengthened the support positioning action of separation rib in oversheath effectively, has both made cable finished product external form rounding, makes line group position more reliable and stable again; Contact action power between oversheath and the separation rib also becomes evenly rationally.The structural stability of cable product improves, and non-deformability strengthens, and has played positive role to keeping the good transmission performance of cable.
As a kind of preferred structure of the present utility model, show bubble structure on the cross section of line group separation rib, it is by being scattered with some bubbles on the separation rib cross section, thereby reduced and optimized the dielectric constant of separation rib, reduced effectively the capacitance between the line group, improve the electric property such as impedance, decay of cable greatly, made the cable electrical performance more excellent, guaranteed the high-speed transfer of signal.
As further execution mode of the present utility model, the direction of lay to the line group that is positioned at line group separation rib homonymy in this cable is opposite.Have can not meshing physically of suitable opposite direction of lay to the line group.A pair of line group can not invaded another circumscribed circle space to the line group, thereby has increased the effective spacing between the line group and keep constant, has reduced effectively coupling between the line group and cross-talk.
Description of drawings
The data cable of the utility model being separated the line group below in conjunction with the drawings and specific embodiments is described in further detail
Fig. 1 is the cross section structure schematic diagram of the utility model to a kind of execution mode of the data cable of line group separation.
Fig. 2 is the perspective view of structure center line group separation rib shown in Figure 1.
Among the figure, 1-oversheath, 2-be to the line group, the 3-heart yearn that insulate, 4-insulating barrier, 5-conductor, 6-line group separation rib, 7-curved end.
Embodiment
A kind of data cable that the line group is separated shown in Figure 1 comprises oversheath 1 and four pairs to line group 2, and each forms so that certain pitch is stranded equably the insulation heart yearn 3 of line group 2 by two different colours.Each eradication edge heart yearn 3 to line group 2 comprises insulating barrier 4 and the copper conductor 5 that is coated in the insulating barrier 4 again.The diameter of the conductor 5 shown in Fig. 1 is 0.6mm, and insulating barrier 4 thickness are 0.5mm, and the material of insulating barrier 4 is a vinyon, and oversheath 1 material is polyolefin or igelite, and the outside diameter of cable is 7.5mm.
Be provided with a line group separation rib 6 in the oversheath 1, this line group separation rib 6 is separated into two zones that can hold the line group with oversheath 1, in two zones of online group of separation rib both sides about in the of 6, all respectively be placed with two pairs symmetrically to line group 2, separated from one another to line group 2 by this line group separation rib 6 with four pairs, make the distance between the line group is maximized, kept data cable respective outer diameter size simultaneously again; A benefit that increases and fix the distance between the line group is to have improved the cable crosstalk performance, and decay and impedance behavior also have corresponding raising simultaneously.
Line group separation rib 6 adopts banded rib structure pattern, has pliability preferably, is easy to bending, is convenient to the cable laying construction, has strengthened stretch-proof, the extrusion capability of data cable, and weight is light again, has further improved the stability to line group position.Therefore, have the data cable of this separation rib structure, both had fabulous electricity function index, have ideal flexible again, taken into account the double requirements of electric property and installation to greatest extent.
Line group separation rib 6 also is provided with the camber end face 7 of T-shape in flank cross section both side ends, makes the shape of cross section of line group separation rib 6 be " I " type structure (as shown in Figure 2), the inwall next-door neighbour of camber end face 7 and oversheath 1.This reasonable in design exquisiteness, the existence of both side ends transition arc type end side 7 makes and to make that the cable external form is stable, rounding that the support of separation rib, fixation are able to obvious reinforcement, and the stable outside diameter of cable has been consolidated the constancy to line group position; While separation rib side contacts more steady, stressed even with the oversheath inwall, strengthened the ability of cable resistance to deformation, and good guarantee effect is played in the raising of electric property.
Uniformly dispersing has fine and closely woven bubble on line group separation rib 6 cross sections, number of bubbles is many, be not communicated with each other, formed foamed separation rib structure, this structure reduces the dielectric constant between the line group effectively, reduction has not only improved impedance and anti-cross-talk performance, and has strengthened the antidamping ability the total capacitance value between the line group.
Two couple of line group separation rib 6 homonymies is opposite to the direction of lay of line group.A pair of direction of lay to the line group is a left-hand, another is a dextrad to the stranded aspect to the line group, thereby eliminated the nested engagement between the line group dangerous fully, kept the physical distance between the line group, the line group separation rib 6 of belt section makes conductor again and to line group ambient air gap maximization in addition, and both comprehensive functions make the line group is fixed in securely and define on the position
The fin of line group separation rib 6 evenly is provided with some protruding nails or pit on two surfaces up and down, the size of protruding nail or pit and spacing all should be less than the external diameters of insulation heart yearn 3, to reduce line group separation rib 6 and contact area, increase line group separation rib 6 and to the air gap between the line group 2 to line group 2.So not only stoped mobile and displacement effectively, improved positional stability, and made again, optimized the electric property of cable greatly the maximization of line group 2 ambient air gaps to line group 2 to line group 2 positions.Certainly line group separation rib 6 upper and lower surfaces also are the bar shaped wave structure, and its bar shaped corrugated projection direction is perpendicular to the length direction of line group separation rib 6, and this structure makes the air gap between line group 2 and the line group separation rib 6 bigger.This bar shaped corrugated protrusion direction also can with the length direction of line group separation rib 6 in the same way or be certain intersecting angle.
Above-mentioned only is specific embodiments more of the present utility model, is to be understood that those of ordinary skills under the prerequisite of the utility model principle, can also make a lot of conversion and improvement.As in the oversheath 1 line group 2 being not limited to four pairs, can also be other any logarithm; The bubble density and the size of line group separation rib 6 also can be decided as the case may be, and its technology is physical blowing both, also chemical blowing; The cable external form also is not limited to circular cross-section; Oversheath is designed to oversheath of functions such as having protection against the tide, fire-retardant or the like.These improve and conversion all should be considered as falling in the protection range of the present utility model.
Claims (6)
1, a kind of data cable that the line group is separated, comprise oversheath (1) and some to line group (2), each is described thoroughly does away with edge heart yearns (3) stranded forming mutually to line group (2) by two, it is characterized in that: in described oversheath (1), be provided with a line group separation rib (6), the cross section both side ends of this line group separation rib (6) is equipped with the "T"-shaped end face that is connected as a single entity with flank, the described both sides that line group (2) are positioned over symmetrically line group separation rib (6).
2, the data cable that the line group is separated according to claim 1 is characterized in that: described line group separation rib (6) cross section show bubble structure.
3, the data cable that the line group is separated according to claim 1 is characterized in that: be laid with protruding nail or pit on the surface of described line group separation rib (6).
4, the data cable that the line group is separated according to claim 1 is characterized in that: described line group separation rib (6) is the bar shaped corrugated surface.
5, according to each described data cable that the line group is separated among the claim 1-4, it is characterized in that: described line group (2) is had four pairs, each is placed with two pairs symmetrically to line group (2) both sides of line group separation rib (6).
6, the data cable that the line group is separated according to claim 5, it is characterized in that: the direction of lay to line group (2) that is positioned at line group separation rib (6) homonymy is opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420054579 CN2758943Y (en) | 2004-12-21 | 2004-12-21 | Data cable of pair wire set isolation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420054579 CN2758943Y (en) | 2004-12-21 | 2004-12-21 | Data cable of pair wire set isolation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2758943Y true CN2758943Y (en) | 2006-02-15 |
Family
ID=36079080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420054579 Expired - Lifetime CN2758943Y (en) | 2004-12-21 | 2004-12-21 | Data cable of pair wire set isolation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2758943Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104157340A (en) * | 2014-07-09 | 2014-11-19 | 江苏亨通线缆科技有限公司 | High-stability submarine communication data transmission cable |
| CN106298044A (en) * | 2016-10-14 | 2017-01-04 | 张家港市新邦电力科技有限公司 | A kind of reinforced copper Baogang signal cable |
| CN107331461A (en) * | 2017-07-27 | 2017-11-07 | 余眈眈 | A kind of reinforced special-shaped crossing skeleton |
-
2004
- 2004-12-21 CN CN 200420054579 patent/CN2758943Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104157340A (en) * | 2014-07-09 | 2014-11-19 | 江苏亨通线缆科技有限公司 | High-stability submarine communication data transmission cable |
| CN106298044A (en) * | 2016-10-14 | 2017-01-04 | 张家港市新邦电力科技有限公司 | A kind of reinforced copper Baogang signal cable |
| CN107331461A (en) * | 2017-07-27 | 2017-11-07 | 余眈眈 | A kind of reinforced special-shaped crossing skeleton |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20141221 Granted publication date: 20060215 |