CN212011212U

CN212011212U - Coaxial cable with good mechanical property

Info

Publication number: CN212011212U
Application number: CN202020970983.2U
Authority: CN
Inventors: 乔乐佳
Original assignee: Shanghai Qiyue High Temperature Cable Co ltd
Current assignee: Shanghai Qiyue High Temperature Cable Co ltd
Priority date: 2020-06-01
Filing date: 2020-06-01
Publication date: 2020-11-24
Anticipated expiration: 2030-06-01

Abstract

The utility model discloses a coaxial cable with good mechanical performance, which comprises an inner conductor, an insulating layer, an inner shielding layer, a double-sided self-adhesive aluminum foil layer, an outer shielding layer and a protective sleeve which are sequentially coated from inside to outside; the inner conductor is of a composite structure that a plurality of strands of copper wires are wrapped on the steel wires in a wrapping mode, so that the mechanical strength of the inner conductor is enhanced, and the bending resistance is high; limiting convex points which are uniformly distributed are formed on the surface of the insulating layer and are matched and embedded with the inner shielding layer, so that the relative resistance between the inner shielding layer and the insulating layer is increased; the two layers of tinned copper wire braided layers are staggered to form a full-coverage surface, so that the shielding efficiency is high; the double-sided self-adhesive aluminum foil layer forms good connection between the inner shielding layer and the outer shielding layer, so that the shielding effect is ensured; the spacing groove of the inner sleeve of the protective sleeve and the spacing ring of the outer sleeve are mutually embedded and clamped, multiple resistance is formed when the protective sleeve is pulled, when the protective sleeve is twisted by external force, the twisting force is buffered, when the protective sleeve is bent, the curvature of the cable can be increased by the spacing groove, and the mechanical performance of the cable is effectively enhanced.

Description

Coaxial cable with good mechanical property

Technical Field

The utility model relates to a communication cable correlation technique field specifically is a coaxial cable that mechanical properties is good.

Background

The radio frequency coaxial cable is a cable which is provided with two concentric conductors, and the conductor and the shielding layer share the same axis. The nomenclature of radio frequency coaxial cable is related to its structure. Radio frequency coaxial cable is also one of the most common transmission media in local area networks. A pair of conductors for transmitting information is selected according to a structure that a layer of cylindrical outer conductor is sleeved outside an inner conductor (a thin core), the two conductors are mutually isolated by insulating materials, the centers of the outer conductor and a central axis core wire are on the same axis, so the coaxial cable is called a radio frequency coaxial cable, and the radio frequency coaxial cable is designed in such a way, so the transmission of abnormal signals interfered by external electromagnetic waves is also prevented.

In the practical application of the existing radio frequency coaxial cable, the phase stability of each cladding is poor, and when the cable is subjected to mechanical stress, relative displacement is easily generated between the cladding, so that the stability of phase and attenuation is influenced; meanwhile, when the cable is used, the cable is easily damaged due to twisting, and the mechanical properties such as torsion and tension resistance are required to be improved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a coaxial cable that mechanical properties is good to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the coaxial cable with good mechanical property comprises an inner conductor, an insulating layer, an inner shielding layer, a double-sided self-adhesive aluminum foil layer, an outer shielding layer and a protective sleeve which are sequentially coated from inside to outside.

Preferably, the inner conductor comprises a steel wire and a plurality of strands of copper wires, and the plurality of strands of copper wires are uniformly wrapped outside the steel wire.

Preferably, the insulating layer is made of a foamed PET material, and a plurality of limiting convex points are arranged on the outer side surface of the insulating layer.

Preferably, the inner shielding layer is a double-layer tinned copper wire braided layer, and gaps of the two layers of tinned copper wire braided layers are clamped on the limiting salient points of the insulating layer in a staggered mode to form a full-coverage surface.

Preferably, the outer shielding layer is a braided layer formed by braiding copper wires and aluminum wires after twisting, and the outer shielding layer is tightly connected with the inner shielding layer through a double-sided self-adhesive aluminum foil layer.

Preferably, the protective sleeve is of a double-layer internal-external nested structure and comprises an inner sleeve and an outer sleeve, the inner layer of the inner sleeve is coated outside the outer shielding layer, a plurality of circular limiting grooves are formed in the outer surface of the inner sleeve at equal intervals, and the corresponding positions of the inner wall of the outer sleeve protrude inwards to form circular guide rings embedded into the limiting grooves.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a set up the inner conductor into the composite construction of stranded copper wire around the package on the steel wire, strengthened the mechanical strength of inner conductor, it can the reinforce to be able to bear or endure to buckle.

2. The utility model forms the limit salient points which are evenly distributed on the surface of the insulating layer and is embedded with the inner shielding layer in a matching way, thereby increasing the relative resistance between the inner shielding layer and the insulating layer, avoiding the relative displacement between the inner shielding layer and the insulating layer and having good stability; meanwhile, the inner shielding layer is a double-layer tinned copper wire weaving layer, the gaps of the two layers of tinned copper wire weaving layers are clamped on the limiting salient points of the insulating layer in a staggered mode to form a full-coverage surface, the covering effect is good, and the shielding efficiency is high.

3. The utility model discloses set up two-sided self-adhesion aluminium foil layer between internal shield layer and external shield layer, form the good linking between internal shield layer and the external shield layer, guarantee the shielding effect.

4. The utility model adopts the double-layer structure as the protective sleeve, the limit groove of the inner sleeve and the limit ring of the outer sleeve are mutually embedded and clamped, on one hand, multiple resistance is formed when the protective sleeve is under tension, and the tensile capacity is enhanced; on the other hand, when the torsion is applied by external force, the limiting ring can rotate along the limiting groove to buffer the torsion force; meanwhile, when the cable is bent, due to the opening structure of the limiting groove of the inner sleeve, the bending degree of the cable can be increased, and the mechanical performance of the cable is effectively enhanced.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of the specific structure of the protecting jacket of the present invention.

In the figure: 1. an inner conductor; 11. a steel wire; 12. a copper wire; 2. an insulating layer; 21. limiting salient points; 3. an inner shield layer; 4. double-sided self-adhesive aluminum foil layers; 5. an outer shield layer; 6. a protective sleeve; 61. an inner sleeve; 611. a limiting groove; 62. a jacket; 621. a guide ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1-2, the present invention provides a technical solution: the coaxial cable with good mechanical property comprises an inner conductor 1, an insulating layer 2, an inner shielding layer 3, a double-sided self-adhesive aluminum foil layer 4, an outer shielding layer 5 and a protective sleeve 6 which are sequentially coated from inside to outside.

Further, the inner conductor 1 comprises a steel wire 11 and a plurality of strands of copper wires 12, and the plurality of strands of copper wires 12 are uniformly wrapped outside the steel wire 11.

Further, the insulating layer 2 is made of a foamed PET material, and a plurality of limiting salient points 21 are arranged on the outer side surface of the insulating layer 2.

Further, the inner shielding layer 3 is a double-layer tinned copper wire braided layer, and gaps of the two layers of tinned copper wire braided layers are clamped on the limiting salient points 21 of the insulating layer 2 in a staggered mode to form a full-coverage surface.

Further, the outer shielding layer 5 is a braided layer formed by braiding copper wires and aluminum wires after twisting, and is tightly connected with the inner shielding layer 3 through the double-sided self-adhesive aluminum foil layer 4.

Further, the protection sleeve 6 is a double-layer inside-outside nested structure and comprises an inner sleeve 61 and an outer sleeve 62, wherein the inner layer of the inner sleeve is coated outside the outer shielding layer 5, the outer surface of the inner sleeve 61 is provided with a plurality of circular limiting grooves 611 at equal intervals, and the corresponding positions of the inner wall of the outer sleeve 62 protrude inwards to form circular guide rings 621 embedded in the limiting grooves 611.

Through setting up inner conductor 1 into the composite construction that stranded copper wire 12 was wrapped on steel wire 11, strengthened inner conductor 1's mechanical strength, resistant ability of buckling is strong. The limiting convex points 21 which are uniformly distributed are formed on the surface of the insulating layer 2 and are matched and embedded with the inner shielding layer 3, so that the relative resistance between the inner shielding layer 3 and the insulating layer 2 is increased, the relative displacement between the inner shielding layer 3 and the insulating layer 2 is avoided, and the stability is good; meanwhile, the inner shielding layer 3 is a double-layer tinned copper wire woven layer, the gaps of the two layers of tinned copper wire woven layers are clamped on the limiting convex points 21 of the insulating layer 2 in a staggered mode to form a full-coverage surface, the covering effect is good, and the shielding efficiency is high. Set up two-sided self-adhesion aluminium foil layer 4 between internal shield layer 3 and external shield layer 5, form the good linking between internal shield layer 3 and the external shield layer 5, guarantee the shielding effect. The protection sleeve 6 is designed to be a double-layer structure, and the limit groove 611 of the inner sleeve 61 and the limit ring 621 of the outer sleeve 62 are mutually embedded and clamped, so that on one hand, multiple resistances are formed when tensile force is applied, and the tensile capacity is enhanced; on the other hand, when the torsion is applied by an external force, the limiting ring 621 can rotate along the limiting groove 611 to buffer the torsion force; meanwhile, when the cable is bent, the bending degree of the cable can be increased due to the opening structure of the limiting groove 611 of the inner sleeve 61, and the mechanical performance of the cable is effectively enhanced.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The coaxial cable with good mechanical property is characterized by comprising an inner conductor (1), an insulating layer (2), an inner shielding layer (3), a double-sided self-adhesive aluminum foil layer (4), an outer shielding layer (5) and a protective sleeve (6) which are sequentially coated from inside to outside.

2. The coaxial cable with good mechanical property according to claim 1, wherein: the inner conductor (1) comprises a steel wire (11) and a plurality of strands of copper wires (12), and the plurality of strands of copper wires (12) are uniformly wrapped outside the steel wire (11).

3. The coaxial cable with good mechanical property according to claim 1, wherein: the insulating layer (2) is made of a foaming type PET material, and a plurality of limiting convex points (21) are arranged on the outer side surface of the insulating layer (2).

4. The coaxial cable with good mechanical property according to claim 1, wherein: the inner shielding layer (3) is a double-layer tinned copper wire braided layer, and gaps of the two layers of tinned copper wire braided layers are clamped on the limiting salient points (21) of the insulating layer (2) in a staggered mode to form a full-coverage surface.

5. The coaxial cable with good mechanical property according to claim 1, wherein: the outer shielding layer (5) is a braided layer formed by braiding copper wires and aluminum wires after the copper wires and the aluminum wires are twisted, and is tightly connected with the inner shielding layer (3) through a double-sided self-adhesive aluminum foil layer (4).

6. The coaxial cable with good mechanical property according to claim 1, wherein: the protective sleeve (6) is of a double-layer internal-external nested structure and comprises an inner sleeve (61) and an outer sleeve (62), wherein the inner layer of the inner sleeve is coated outside the outer shielding layer (5), a plurality of circular limiting grooves (611) are formed in the outer surface of the inner sleeve (61) at equal intervals, and the corresponding positions of the inner wall of the outer sleeve (62) protrude inwards to form circular guide rings (621) embedded into the limiting grooves (611).