CN203839075U - A highly flexible flat telephone wire - Google Patents

Abstract

The utility model discloses a highly flexible flat telephone wire comprising eight circular metal conductors. The external surfaces of the circular metal conductors are all covered by inner insulating layers. Every two of the eight circular metal conductors are intertwisted with each other to form a first twisted wire set, a second twisted wire set, a third twisted wire set and a fourth twisted wire set. The first twisted wire set, the second twisted wire set, the third twisted wire set and the fourth twisted wire set are sequentially arranged at intervals in a parallel mode. The external surfaces of the first twisted wire set, the second twisted wire set, the third twisted wire set and the fourth twisted wire set are all respectively covered by elliptical external insulation layers. The elliptical outer insulating layers of each two adjacent twisted wire sets are connected through connecting ribs. According to the highly flexible flat telephone wire of the utility model, transmission characteristics of the product are guaranteed; simultaneously, a circular structure of a traditional cable is broken through; and problems that indexes such as cable crosstalk and stretch of the conductors and insulating layers are influenced by changes of pitches between inner line pairs of digital cable due to stretching are effectively solved.

Description

The flat telephone wire of high flexibility

Technical field

The utility model relates to telephone wire field, is specifically related to the flat telephone wire of a kind of high flexibility.

Background technology

Common indoor telephone wire is that single line is through twisting operation, then several groups of strands will be twisted into circular configuration with certain laying up pitch 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 cable inner wire is right to change because stretching in the time of construction wiring, thereby have influence on digital cable to every electric transmission performance, and the cable of this circular configuration is also unfavorable for indoor wiring and finishing.

The structure of cable: the structure of common cable is that single line as the circular configuration of sheath, is mainly laid in residence interior trims netting twine or computer local area machine room to use PVC after stranding through strand.

Due to the limitation of the said structure of cable, in residence interior trims netting twine or computer local area machine room, the wiring of cable and finishing bring many inconvenience, suffer distortion, bending, the digital cable processed roughly when construction, cause quality unstable, unreliable; Lack certain ability that prevents from affecting because of force-extension ability serviceability, repeatedly wiring has increased production cost, has increased heavy burden and the mounting and installation cost of building structure, has promotion prospect widely.

Summary of the invention

The utility model object is to provide the flat telephone wire of a kind of high flexibility, the flat telephone wire of this high flexibility is in ensureing Transmission characteristic, break through the circular configuration of traditional cable, effectively solve the right pitch in digital cable interior lines and changed because stretching, had a strong impact on the index such as stretching of cable cross-talk, 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.

For achieving the above object, the technical solution adopted in the utility model is: the flat telephone wire of a kind of high flexibility, comprise: eight circular metal conductors, this circular metal conductor outer surface is all coated with inner insulating layer, described eight circular metal conductors are the stranded first twisted wire group that forms respectively between two, the second twisted wire group, the 3rd twisted wire group and the 4th twisted wire group, the first twisted wire group, the second twisted wire group, the 3rd twisted wire group and the 4th twisted wire group are arranged on parallel interval ground successively, the first twisted wire group, the second twisted wire group, the 3rd twisted wire group and the 4th twisted wire group separately outer surface are all coated with oval external insulation layer, adjacent twisted wire group connects by dowel between oval external insulation layer separately,

The pitch of the first twisted wire group and the 3rd twisted wire group is greater than the pitch of the second twisted wire group and the 4th twisted wire group, and the pitch of described the first twisted wire group is greater than the pitch of the 3rd twisted wire group, and the pitch of described the second twisted wire group is greater than the pitch of the 4th twisted wire group.

In technique scheme, further improvement project is as follows:

In such scheme, the flat telephone wire length of described high flexibility and height ratio are 10:1 ~ 2.

Because technique scheme is used, the utility model compared with prior art has following advantages and effect:

The flat telephone wire of the utility model high flexibility, in ensureing Transmission characteristic, break through the circular configuration of traditional cable, effectively solved the right pitch in digital cable interior lines and changed because stretching, have a strong impact on the index such as stretching of cable cross-talk, conductor and insulating barrier; Conveniently install, lay, and it is less to take up room, will not take any unnecessary interior space, migration is accurately arbitrary narrow corner in family; Secondly, electrical property, ageing properties variation with temperature are little, environment friendly and pollution-free, have promotion prospect and market value widely; Secondly, compared with the digital cable of traditional circular configuration, this product can ensure that cable is without elongation strain, guarantee its transmission characteristic long-term stability, have again mechanical strength high, tensile strength is large, and coefficient of safety is higher, install, lay the advantages such as convenient, there is obvious economic benefit and promotional value.

Brief description of the drawings

Accompanying drawing 1 is the flat telephone wire structural representation of the utility model high flexibility.

In above accompanying drawing: 1, circular metal conductor; 2, inner insulating layer; 3, the first twisted wire group; 4, the second twisted wire group; 5, the 3rd twisted wire group; 6, the 4th twisted wire group; 7, oval external insulation layer; 8, dowel.

Embodiment

Below in conjunction with drawings and Examples, the utility model is further described:

Embodiment: the flat telephone wire of a kind of high flexibility, comprise: eight circular metal conductors 1, this circular metal conductor 1 outer surface is all coated with inner insulating layer 2, described eight circular metal conductors 1 are the stranded first twisted wire group 3 that forms respectively between two, the second twisted wire group 4, the 3rd twisted wire group 5 and the 4th twisted wire group 6, the first twisted wire group 3, the second twisted wire group 4, the 3rd twisted wire group 5 and the 4th twisted wire group 6 are arranged on parallel interval ground successively, the first twisted wire group 3, the second twisted wire group 4, the 3rd twisted wire group 5 and the 4th twisted wire group 6 separately outer surface are all coated with oval external insulation layer 7, adjacent twisted wire group connects by dowel 8 between oval external insulation layer 7 separately,

The pitch of the first twisted wire group 3 and the 3rd twisted wire group 5 is greater than the pitch of the second twisted wire group 4 and the 4th twisted wire group 6, and the pitch of described the first twisted wire group 3 is greater than the pitch of the 3rd twisted wire group 5, and the pitch of described the second twisted wire group 4 is greater than the pitch of the 4th twisted wire group 6.

The flat telephone wire length of above-mentioned high flexibility and height ratio are 10:1 ~ 2.

While adopting the flat telephone wire of above-mentioned high flexibility, by changing its circular configuration, core adopts multiply flexible conductor, soft bending radius is little, the direct sheath as cable with environment-friendly PVC material after pair twist, high resistance, ageing-resistant performance are good, and can effectively prevent because of construction environment friendly and pollution-free time time, the bending excessive right sheaf space in cable interior lines that changes of cable, causes the decline of cable Noise Resistance Ability; Therefore in guaranteeing the stable transmission performance of cable, coefficient of safety is higher, install, lay conveniently, effectively reduce and produce and laid down cost.This special construction not only improves the mechanical strength of cable, tensile strength effectively; Also significantly improve the stretch-proof bending resistance of cable, guarantee cable, without elongation strain, is guaranteed its transmission characteristic long-term stability; This cable can be used as the cable in residence interior trims netting twine or computer local area machine room, also can be used as data cable in distributing system, automated detection system.

Above-described embodiment is only explanation technical conceive of the present utility model and feature, and its object is to allow 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. the flat telephone wire of high flexibility, it is characterized in that: comprising: eight circular metal conductors (1), this circular metal conductor (1) outer surface is all coated with inner insulating layer (2), described eight circular metal conductors (1) are the stranded first twisted wire group (3) that forms respectively between two, the second twisted wire group (4), the 3rd twisted wire group (5) and the 4th twisted wire group (6), the first twisted wire group (3), the second twisted wire group (4), the 3rd twisted wire group (5) and the 4th twisted wire group (6) are arranged on parallel interval ground successively, the first twisted wire group (3), the second twisted wire group (4), the 3rd twisted wire group (5) and the 4th twisted wire group (6) separately outer surface are all coated with oval external insulation layer (7), adjacent twisted wire group connects by dowel (8) between oval external insulation layer (7) separately,

The pitch of the first twisted wire group (3) and the 3rd twisted wire group (5) is greater than the pitch of the second twisted wire group (4) and the 4th twisted wire group (6), the pitch of described the first twisted wire group (3) is greater than the pitch of the 3rd twisted wire group (5), and the pitch of described the second twisted wire group (4) is greater than the pitch of the 4th twisted wire group (6).

2. the flat telephone wire of high flexibility according to claim 1, is characterized in that: the flat telephone wire length of described high flexibility and height ratio are 10:1 ~ 2.