CN214428394U - High-frequency shielding wire - Google Patents

Abstract

The utility model relates to a high frequency shielded wire, including stranded conductor group and a plurality of heart yearns, the heart yearn outside is by interior and set gradually insulating layer, first shielding layer and design layer outward, the stranded conductor group outside is provided with the second shielding layer, the outside after stranded conductor group and heart yearn combination is provided with third shielding layer and crust. The shielding wire has the effects of reducing interference of an external electromagnetic field on the wire and improving the shielding performance of the shielding wire.

Description

High-frequency shielding wire

Technical Field

The present application relates to the field of cables, and in particular, to a high frequency shielded wire.

Background

At present, a shielding wire is a transmission line in which a signal wire is wrapped with a metal mesh braid, the braid is generally red copper or tin-plated copper, and a shielding layer of the shielding wire is grounded to guide an external interference signal to the ground. The shielding wire can reduce the influence of an external electromagnetic field on a power supply or a communication line, and simultaneously has the function of preventing the electromagnetic energy from being radiated outwards by the line.

The existing shielding wire mostly adopts a mode of uniformly shielding multi-strand transmission wires, a shielding layer is sleeved on the outer layer of the multi-strand transmission wires, and the shielding layer wraps the wires together, so that the interference of an external electromagnetic field to a cable is reduced, and the shielding effect is further realized. When the shield wire transmits high-frequency signals, the transmission wires vibrate, the wires and the shield layer collide with each other, and the shield layer is easily damaged after long-time use.

With respect to the related art among the above, the applicant believes that the following disadvantages exist: when the shielding layer is partially damaged, the wire is directly contacted with an external electromagnetic field, and the transmission effect of the wire is influenced by the interference of the electromagnetic field.

SUMMERY OF THE UTILITY MODEL

In order to reduce the interference of an external electromagnetic field on a wire and improve the shielding effect of a shielding wire, the application provides a high-frequency shielding wire.

The application provides a high frequency shielded wire adopts following technical scheme:

the utility model provides a high frequency shielded wire, includes stranded conductor group and a plurality of heart yearns, the heart yearn outside is by interior and outer insulating layer, first shielding layer and the design layer of having set gradually, the stranded conductor group outside is provided with the second shielding layer, the outside after stranded conductor group and heart yearn combination is provided with third shielding layer and crust.

By adopting the technical scheme: the outer sides of the core wires are firstly wrapped with the insulating layer to isolate current, then wrapped with the first shielding layer, and then fixed in shape through the shaping layer, so that each core wire is provided with the first shielding layer, and the outer sides of the stranded wire groups are provided with the second shielding layers, thereby reducing the electromagnetic interference between the core wires and the stranded wire groups; the third shielding layer can reduce electromagnetic exchange between the core wire and the outside, so that interference of an external electromagnetic field on the wire is reduced, and when the third shielding layer is locally damaged, the core wire and the stranded wire group are not directly exposed in the external magnetic field due to the existence of the first shielding layer and the second shielding layer, so that the shielding effect of the shielding wire can be improved; the heart yearn outside is provided with the design layer, when the shielded wire carries out the vibration of high frequency signal transmission heart yearn, the design layer can play the effect of protecting first shielding layer to this reduces first shielding layer and collides each other increase of service life.

Preferably, a belting layer is arranged on the outer sides of the stranded wire group and the core wires, and the other side of the belting layer is abutted to the third shielding layer.

By adopting the technical scheme: the band layer binds the stranded conductor group with a plurality of heart yearns, has reduced the space between the heart yearn, enables between the heart yearn, between heart yearn and the stranded conductor group arrange more closely, can keep apart heart yearn and third shielding layer simultaneously, reduces the influence of shielding layer to the heart yearn.

Preferably, the wrapping layer is spirally wound on the outer sides of the stranded wire group and the core wire.

By adopting the technical scheme: the belting layer adopts spiral winding's mode, produces the power of tightening up when the winding, enables heart yearn and stranded conductor group inwards tighten up to reduce the problem that leads to the increase of line diameter because of the space, enable winding more closely between the belting simultaneously.

Preferably, a filling member is arranged in the belting layer, and the filling member is abutted against the core wire and the stranded wire group.

By adopting the technical scheme: the space clearance between the heart yearn, between heart yearn and the stranded conductor group can be filled to the filling member, further reduces the heart yearn, stranded conductor group vibration and the collision that brings, can play the cushioning effect simultaneously, the effectual heart yearn of having protected and stranded conductor group.

Preferably, the first shielding layer comprises a winding layer and a copper foil tape, and the copper foil tape is arranged on the outer side of the winding layer.

By adopting the technical scheme: the winding layer wraps up in the heart yearn outside, can increase the compliance of heart yearn, is favorable to the heart yearn to buckle to form first shielding layer after making up with the copper foil, can improve the shielding property of first shielding layer.

Preferably, the shaping layer is a hot-melt mylar tape.

By adopting the technical scheme: the mylar piece is coated outside the copper foil belting through heating, so that the first shielding layer is tightly attached to the outer side of the core wire, the mylar piece is high in tearing strength and has super-strong insulating property, and the safety performance of the core wire is improved.

Preferably, the number of strands of the core wire is 5 to 20.

By adopting the technical scheme: by adopting the manufacturing method, the effect is obvious when the number of the core wires is 5-20, the collision among the core wires can be reduced, and the shielding effect is improved; in the case of single-core wires or less core wires, the mutual interference between the core wires is smaller due to the less core wires, and material is wasted in this way, for which the number of strands of the core wires should be set between 5 and 20.

Preferably, the filling member is cotton thread or fiber silk.

By adopting the technical scheme: the cotton thread is rock wool fiber or glass fiber generally, when filling the clearance between the heart yearn, heart yearn and stranded conductor group, can also increase the tensile strength of shielded wire, has certain fire prevention effect simultaneously.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the outer sides of the core wires are firstly wrapped with the insulating layer to isolate current, then wrapped with the first shielding layer, and then fixed in shape through the shaping layer, so that each core wire is provided with the first shielding layer, and the outer sides of the stranded wire groups are provided with the second shielding layers, thereby reducing the electromagnetic interference between the core wires and the stranded wire groups; the third shielding layer can reduce electromagnetic exchange between the core wire and the outside, so that interference of an external electromagnetic field on the wire is reduced, and when the third shielding layer is locally damaged, the core wire and the stranded wire group are not directly exposed in the external magnetic field due to the existence of the first shielding layer and the second shielding layer, so that the shielding effect of the shielding wire can be improved;

2. the shaping layer is arranged on the outer side of the core wire, and can play a role in protecting the first shielding layer when the shielding wire performs high-frequency signal transmission core wire vibration, so that the mutual collision of the first shielding layers is reduced, and the service life is prolonged;

3. the space clearance between the heart yearn, between heart yearn and the stranded conductor group can be filled to the filling member, further reduces the heart yearn, stranded conductor group vibration and the collision that brings, can play the cushioning effect simultaneously, the effectual heart yearn of having protected and stranded conductor group.

Drawings

FIG. 1 is a top view of an embodiment of the present application;

fig. 2 is a schematic structural diagram of an embodiment of the present application.

Description of reference numerals: 1. a core wire; 11. an insulating layer; 12. a first shielding layer; 121. a winding layer; 122. copper foil wrapping tape; 13. a shaping layer; 2. a twisted wire group; 21. a second shielding layer; 3. a filling member; 4. a belting layer; 5. a third shielding layer; 6. and (4) coating.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses a high-frequency shielding wire.

Referring to fig. 1, a high-frequency shielding wire includes a stranded conductor group 2 and eight core wires 1, an insulating layer 11, a first shielding layer 12 and a shaping layer 13 are sequentially disposed on the outer side of each core wire 1 from inside to outside, a second shielding layer 21 is disposed on the outer side of each stranded conductor group 2, and a third shielding layer 5 and a sheath 6 are disposed on the outer side of each stranded conductor group 2 combined with the core wires 1. Each core wire 1 is provided with a first shielding layer 12, and a second shielding layer 21 is arranged outside the stranded wire group 2, so that electromagnetic interference between the core wires 1 and between the core wires 1 and the stranded wire group 2 is reduced. The third shielding layer 5 can reduce the electromagnetic exchange between the core wire 1 and the outside world, and then reduce the interference of the outside electromagnetic field to the wire, when the third shielding layer 5 is locally damaged, because of the existence of the first shielding layer 12 and the second shielding layer 21, the core wire 1 and the stranded wire group 2 are not directly exposed in the outside magnetic field, and aiming at the situation, the shielding effect of the shielding wire can be improved.

Referring to fig. 1, the core wire 1 may be made of teflon, and the metal wire is wrapped by teflon, so that the insulation property is good. The first shielding layer 12 includes a winding layer 121 and a copper foil tape 122, the winding layer 121 is wrapped outside the core wire 1, and the copper foil tape 122 is disposed outside the winding layer 121. The winding layer 121 is made of flexible materials such as aluminum wires, the flexibility of the core wire 1 can be increased, the core wire 1 is bent, the first shielding layer 12 is formed after the winding layer is combined with copper foil, and the shielding performance of the first shielding layer 12 can be improved.

Referring to fig. 1, the shaping layer 13 is a hot-melt mylar tape, and the mylar tape is coated on the outer side of the copper foil tape 122 by heating, so that the first shielding layer 12 is tightly attached to the outer side of the core wire 1, and the first shielding layer 12 is not easily separated from the core wire 1. The Mylar film has high tearing strength and super-strong insulating property, and the safety performance of the core wire 1 is improved.

Referring to fig. 1, the twisted wire set 2 includes two twisted wires, the second shielding layer 21 is coated on the outer side of the twisted wires, and the second shielding layer 21 may be made of shielding material such as aluminum foil or copper foil, so as to reduce electromagnetic interference between the core wire 1 and the twisted wire set 2.

Referring to fig. 2, the wrapping layer 4 is arranged on the outer sides of the stranded wire group 2 and the core wire 1, the wrapping layer 4 is spirally wound on the outer sides of the stranded wire group 2 and the core wire 1, and a tightening force is generated while winding, so that the core wire 1 and the stranded wire group 2 are tightened inwards, the problem of increasing the wire diameter due to gaps is reduced, and meanwhile, the wrapping between the wrapping layers is tighter. The belting layer 4 can adopt cotton paper, and the cotton paper is the fiber material, reduces the influence to heart yearn 1, has certain fire-retardant effect simultaneously.

Referring to fig. 2, in order to reduce the space gap between the core wires 1 and the strand group 2, a filler 3 is provided inside the belting layer 4, and the filler 3 is in contact with the core wires 1 and the strand group 2. In this embodiment, filler 3 is provided with two, and filler 3 adopts cotton thread or cellosilk, and the cotton thread is rock wool fibre or glass fiber generally, when filling the clearance between heart yearn 1, heart yearn 1 and stranded conductor group 2, can also increase the tensile strength of shielded wire, has certain fire prevention effect simultaneously.

Referring to fig. 2, a third shielding layer 5 and an outer sheath 6 are disposed outside the wrapping layer 4, and the third shielding layer 5 may be made of a shrinkable shielding material such as a braided mesh, so as to tightly wind the core wire 1 and the stranded wire group 2 and maintain the wire diameter of the shielding wire. The sheath 6 is made of thermoplastic elastic materials such as silica gel sheets or polyethylene and is integrally formed by a thermoplastic process, has elasticity and can bend along with the shielding lines.

Referring to fig. 2, the number of strands of the core wires 1 is generally set to 5 to 20, and the above-described manufacturing method has an obvious effect when the number of the core wires 1 is 5 to 20, and can reduce collision between the core wires 1 and improve the shielding effect. In the case of a single core wire 1 or a smaller number of core wires 1, the mutual interference between the core wires 1 is smaller because of the smaller number of core wires 1, and material is wasted in this way, for which the number of strands of the core wires 1 should be set between 5 and 20.

The implementation principle of the high-frequency shielding wire in the embodiment of the application is as follows: the outer side of the core wire 1 is firstly wrapped with the insulating layer 11 to isolate current, then wrapped with the first shielding layer 12, and then fixed by the shaping layer 13, so that each core wire 1 is provided with the first shielding layer 12, and the outer side of the stranded wire group 2 is provided with the second shielding layer 21, thereby reducing the electromagnetic interference between the core wire 1 and between the core wire 1 and the stranded wire group 2. The third shielding layer 5 can reduce the electromagnetic exchange between the core wire 1 and the outside world, and then reduce the interference of the external electromagnetic field to the wire, when the third shielding layer 5 is locally damaged, because of the existence of the first and second shielding layers 21, the core wire 1 and the stranded wire group 2 are not directly exposed in the external magnetic field, and aiming at the situation, the shielding effect of the shielding wire can be improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. A high-frequency shielded wire characterized in that: including stranded conductor group (2) and a plurality of heart yearn (1), heart yearn (1) outside is by interior and set gradually insulating layer (11), first shielding layer (12) and design layer (13) outward, the stranded conductor group (2) outside is provided with second shielding layer (21), the outside after stranded conductor group (2) and heart yearn (1) combination is provided with third shielding layer (5) and crust (6).

2. A high-frequency shielded wire according to claim 1, characterized in that: and a belting layer (4) is further arranged on the outer sides of the stranded wire group (2) and the core wire (1), and the other side of the belting layer (4) is abutted against the third shielding layer (5).

3. A high-frequency shielded wire according to claim 2, characterized in that: the wrapping belt layer (4) is spirally wound on the outer sides of the stranded wire group (2) and the core wire (1).

4. A high-frequency shielded wire according to claim 2, characterized in that: the inner part of the belting layer (4) is provided with a filling piece (3), and the filling piece (3) is abutted against the core wire (1) and the stranded wire group (2).

5. A high-frequency shielded wire according to claim 1, characterized in that: the first shielding layer (12) comprises a winding layer (121) and a copper foil wrapping tape (122), and the copper foil wrapping tape (122) is arranged on the outer side of the winding layer (121).

6. A high-frequency shielded wire according to claim 1, characterized in that: the shaping layer (13) is a hot-melt mylar tape.

7. A high-frequency shielded wire according to claim 1, characterized in that: the number of strands of the core wire (1) is 5-20 strands.

8. The high-frequency shielded wire according to claim 4, wherein: the filling piece (3) is cotton thread or cellosilk.

Images