CN211350125U - Unshielded twisted pair - Google Patents

Abstract

The utility model discloses a non-shielding paired line relates to the paired line field, and its technical scheme main points are including two twisted core lines, along the cross support that two twisted core line length direction extend, set up in the blend stop of each tip both sides of cross support and set up the strip of paper used for sealing between the relative blend stop on the cross support, strip of paper used for sealing, blend stop and cross support mutually support and form four chambeies that hold that are used for holding two twisted core lines, strip of paper used for sealing and blend stop are fixed mutually through the joint structure. The double twisted core wire protecting device has the advantages that the double twisted core wire is protected by utilizing the triangular stable structure, so that the deformation of the twisted wire due to pressure is avoided.

Description

Unshielded twisted pair

Technical Field

The utility model relates to a paired line field, in particular to non-shielding paired line.

Background

Twisted pairs are made up of four sets of two copper wires twisted about one another and wrapped in insulating sleeves, and when multiple pairs are wrapped together, each pair is often color coded. A number of different twisted pairs are required for different applications such as analog, digital and ethernet. Four pairs of transmission lines of different colors are mutually wound, each pair of lines of the same color transmits electric pulses in two directions back and forth, and the design utilizes the principle that electromagnetic induction is mutually counteracted to shield electromagnetic interference with the frequency of less than 30 Mhz.

However, it is known from the structural characteristics of the twisted pair that, when the longitudinal direction of the twisted pair is defined as the Z axis and the X axis and the Y axis perpendicular to each other are provided in a plane perpendicular to the Z axis, the thickness of the twisted pair is generally different in the X axis direction and the Y axis direction, and when the X-Y direction is defined as the cross section, the thickness of the twisted pair is changed in the X axis direction and the Y axis direction and the change directions are opposite to each other as the cross section moves in the Z axis direction. Thus, when the twisted pair is under compression, the compressed points are spaced contact points rather than continuous line contacts. Twisted pairs require a robust outer cladding to resist compression.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a non-shielding paired line, it has utilizes triangle stable structure to protect the two twisted pair heart yearns to avoid the twisted pair to receive the pressure advantage that takes place to warp.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides an unshielded twisted pair line, includes two hank heart yearns, the cross support that extends along two hank heart yearns length direction, sets up in the blend stop of each tip both sides of cross support and sets up the strip of paper used for sealing between the relative blend stop on the cross support, the strip of paper used for sealing, blend stop and cross support mutually support and form four and be used for holding the chamber that holds of two hank heart yearns, the strip of paper used for sealing and the blend stop are fixed mutually through the joint.

Through adopting above-mentioned technical scheme, cross support, strip of paper used for sealing and blend stop mutually support and form the chamber that holds of triangular structure, and the triangular structure has stronger compressive property, can play good guard action to holding the two twisted core lines of intracavity portion, avoids two twisted core lines pressurized and influence the electricity performance. In addition, the strip of paper used for sealing sets up for detachable joint, and the installation only need be earlier with two twisted core wires impress hold the intracavity, again with the strip of paper used for sealing impress between the blend stop can, very convenient. When the twisted pair core wire is used, the twisted pair core wire led out of the accommodating cavity can be aligned only by sliding off the seal strip exposing opening.

Further setting: the joint structure is protruding including setting up in the joint recess of the relative tip of blend stop and locating the strip of paper used for sealing towards the joint of blend stop tip in order to be used for imbedding the joint recess, the bellied shape of joint and joint recess looks adaptation.

Further setting: the barrier strip is made of epoxy resin material.

Through adopting above-mentioned technical scheme, epoxy has better elasticity, and when the strip of paper used for sealing was impressed between two relative blend stops, the blend stop atress warp until the protruding embedding joint recess of joint, realizes the interference fit of joint arch and joint recess.

Further setting: an inner core is arranged at the axis of the cross-shaped bracket in a penetrating way.

Further setting: the inner core is made of an oxygen-free copper material.

Through adopting above-mentioned technical scheme, the intensity of cross support can effectively be improved to the inner core, can effectively prevent that cross support from being broken by the tension.

Further setting: and glass fibers are arranged in the seal along the length direction of the seal.

Through adopting above-mentioned technical scheme, glass fiber can effectively improve the stretch-proof nature of strip of paper used for sealing for the strip of paper used for sealing can regard as tearing the rope in the in-service use to use.

Further setting: an outer protective layer is sleeved outside the cross-shaped support, and the end part of the cross-shaped support is abutted to the outer protective layer.

Further setting: the end part of the cross-shaped bracket is provided with a clamping block, and the clamping block is embedded in the outer protective layer.

Through adopting above-mentioned technical scheme, the outer protective layer cladding can effectively prevent the strip of paper used for sealing from breaking away from the cross support in the surface of cross support and strip of paper used for sealing. And the fixture block is embedded in the outer protective layer, so that the cross bracket and the outer protective layer can be fixed with each other, the cross bracket and the outer protective layer are prevented from sliding or rotating relative to each other, and the cross bracket and the outer protective layer can be supported with each other.

Further setting: the outer protective layer is made of ethylene propylene rubber material.

By adopting the technical scheme, the ethylene propylene rubber has excellent weather resistance, ozone resistance, heat resistance, acid and alkali resistance, water vapor resistance, color stability, electrical property, oil filling property and normal temperature fluidity, also has excellent electrical insulation property and corona resistance, and the electrical property is superior to or close to styrene butadiene rubber, chlorosulfonated polyethylene, polyethylene and crosslinked polyethylene.

Further setting: the containing cavity is internally provided with soft filler.

Further setting: the soft filler is foam rubber.

By adopting the technical scheme, the soft filler is used for filling the gap between the twisted core wire and the cross bracket in the accommodating cavity, so that the twisted core wire is prevented from shaking in the accommodating cavity. When the twisted pair receives external force, the fillers on the inner side and the outer side of the bend are extruded to deform, a large amount of bubbles are contained in the foam rubber, and the bubbles are beneficial to uniform stress of the twisted pair core wire when the twisted pair core wire is bent.

To sum up, the utility model discloses following beneficial effect has:

1. the twisted pair core wires are mutually isolated and respectively contained in the containing cavity through the cross framework, and the twisted pair core wires are protected by the triangular stable structure, so that the twisted pair wires are prevented from being deformed under pressure.

2. The tensile property is good, the twisted core wire inside can be conveniently led out, and the device is very convenient.

Drawings

Fig. 1 is a schematic structural diagram of an unshielded twisted pair in this embodiment.

In the figure, the position of the upper end of the main shaft,

1. double twisting a core wire; 2. a cross-shaped bracket; 21. a clamping block; 3. blocking strips; 4. a seal; 5. an accommodating chamber; 6. a clamping structure; 61. clamping the bulges; 62. clamping the groove; 7. an inner core; 8. an outer protective layer; 9. a soft filler.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

An unshielded twisted pair, referring to fig. 1, includes four twisted pair core wires 1 arranged in parallel, a cross bracket 2 extending along the length direction of the twisted pair core wires 1, an inner core 7 passing through the cross bracket 2, barrier strips 3 arranged at both sides of each end of the cross bracket 2, a seal strip 4 arranged between the barrier strips 3 on the cross bracket 2, and an outer protective layer 8 sleeved outside the cross bracket 2. The seal 4, the barrier 3 and the cross bracket 2 cooperate with each other to form four accommodating cavities 5 for accommodating the twisted pair of core wires 1.

The cross-shaped support 2 is arranged in a centrosymmetric cross shape, the inner core 7 is arranged coaxially with the symmetry axis of the cross-shaped support 2, and in the embodiment, the inner core 7 is a round copper core. The copper round core has higher bending resistance and tensile resistance, and effectively improves the strength of the cross-shaped support 2 to prevent the cross-shaped support 2 from being broken by pulling.

The barrier strips 3 are located on both sides of each end of the cross bracket 2 and are integrally arranged with the cross bracket 2, and in the embodiment, the barrier strips 3 and the cross bracket 2 are both made of epoxy resin material. The barrier strips 3 between the end parts of the adjacent cross brackets 2 extend towards each other until abutting against the seal strips 4. The seal 4 is also extended along the length direction of the twisted pair core wire 1, and both sides thereof are respectively abutted against the barrier 3. The main body of the seal 4 is made of epoxy resin material, and the inside of the seal 4 is provided with glass fiber along the length direction of the seal 4. The glass fiber can effectively improve the tensile resistance of the seal 4, so that the seal 4 can be used as a tearing rope in actual use.

Strip of paper used for sealing 4 and blend stop 3 are fixed mutually through joint structure 6, and joint structure 6 is including setting up in the joint recess 62 of the relative tip of blend stop 3 and locating the protruding 61 of joint of strip of paper used for sealing 4 towards the 3 tip of blend stop, and the protruding 61 shape of joint and the protruding 62 looks adaptations of joint recess of joint, and the protruding 61 joint of joint is gone into in joint recess 62 when producing, realizes the interference fit of strip of paper used for sealing 3 and 4.

The outer protective layer 8 is tubular, and the inner side surface of the outer protective layer 8 is attached to the surfaces of the cross bracket 2, the barrier strip 3 and the seal strip 4, and in this embodiment, the outer protective layer 8 is made of ethylene propylene rubber. The end part of the cross bracket 2 is abutted against the outer protective layer 8, the end part of the cross bracket 2 is provided with a fixture block 21, and the fixture block 21 is embedded in the outer protective layer 8. The fixture block 21 can realize mutual fixation between the cross bracket 2 and the outer protective layer 8, so that the cross bracket 2 and the outer protective layer 8 are prevented from sliding or rotating relatively, and the cross bracket 2 and the outer protective layer 8 can support each other.

A soft filler 9 is disposed in the accommodating cavity 5, and in this embodiment, the soft filler 9 is foam rubber. The soft filler 9 is used for filling a gap between the twisted core wire 1 and the cross bracket 2 in the accommodating cavity 5, and the twisted core wire 1 is prevented from shaking in the accommodating cavity 5. When the outer protective layer 8 receives external force and takes place the bending often, the filler in the crooked inboard and outside all can receive the extrusion and take place deformation, contains a large amount of bubbles in the foam rubber, and the internal stress that produces when the bubble can effectively reduce the bending to make foam rubber transmit the effort for twisted pair heart yearn 1 uniformly.

The above-mentioned embodiments are merely illustrative of the present invention, and are not intended to limit the present invention, and those skilled in the art can make modifications of the present embodiments without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent law within the scope of the present invention.

Claims (10)

1. The utility model provides a non-shielding twisted pair, its characterized in that includes two hank heart yearns (1), along two cross support (2) that hank heart yearn (1) length direction extends, set up in blend stop (3) of each tip both sides of cross support (2) and set up seal (4) between relative blend stop (3) on cross support (2), seal (4), blend stop (3) and cross support (2) mutually support and form four and be used for holding chamber (5) that hold of two hank heart yearns (1), seal (4) and blend stop (3) are fixed mutually through joint structure (6).

2. The unshielded twisted pair according to claim 1, wherein the clamping structure (6) comprises a clamping groove (62) disposed at the opposite end of the barrier strip (3) and a clamping protrusion (61) disposed at the end of the seal (4) facing the barrier strip (3) for being inserted into the clamping groove (62), and the clamping protrusion (61) has a shape adapted to the clamping groove (62).

3. The unshielded twisted pair according to claim 1, wherein the core (7) is provided through the axis of the spider (2).

4. The unshielded twisted pair according to claim 1, wherein the seal (4) has glass fibers disposed therein along the length of the seal (4).

5. The unshielded twisted pair according to claim 1, wherein said barrier (3) is made of epoxy material.

6. The unshielded twisted pair according to claim 1, wherein an outer protective layer (8) is sleeved outside the cross bracket (2), and the end of the cross bracket (2) abuts against the outer protective layer (8).

7. The unshielded twisted pair according to claim 6, wherein a clamping block (21) is arranged at the end of the cross bracket (2), and the clamping block (21) is embedded in the outer protective layer (8).

8. The unshielded twisted pair according to claim 7, wherein said outer protective layer (8) is made of ethylene propylene rubber material.

9. The unshielded twisted pair according to claim 1, wherein a soft filler (9) is arranged inside the housing cavity (5).

10. The unshielded twisted pair according to claim 9, wherein said soft filler (9) is a foam rubber.

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