CN214203310U - Coaxial cable - Google Patents

Abstract

The utility model provides a coaxial cable, which comprises a conducting wire, a first insulating layer, a first shielding layer, a second shielding layer and a sheath, wherein the first insulating layer, the first shielding layer, the second shielding layer and the sheath are arranged around the conducting wire in sequence; the first shielding layer is a double-sided self-adhesive aluminum foil, the sheath is formed by chlorinated polyethylene elastomer materials, and the thickness is 0.75 mmmm. The utility model discloses set up two-layer shielding layer in cable inside, utilize two-sided self-adhesion aluminium foil to form first shielding layer, polyvinyl chloride material forms the cable sheath, has improved elasticity and the wear resistance of cable through chlorinated polyethylene elastomer's characteristic to utilize other layering of first shielding layer bonding cable, reduced the cable when removing or warping, easy atress influences the damage, and the unstable problem of communication has expanded coaxial cable's application range and result of use.

Description

Coaxial cable

Technical Field

The utility model relates to a communication cable field especially relates to a coaxial cable.

Background

With the rapid development of electronics and information industries, higher requirements are put forward on signal transmission cables, and the transmission cables develop towards the directions of broadband, low loss, low standing wave, high frequency and the like. Coaxial cables are increasingly used in communications technology because they are capable of supporting high bandwidth signal transmission over long distances. However, most of the existing coaxial cables have the problems of easy breakage of the cables, unstable communication and the like when moving or twisting, and the use of the coaxial cables is seriously affected by the problems, so that a solution is needed.

SUMMERY OF THE UTILITY MODEL

In order to overcome prior art not enough, the utility model provides a coaxial cable sets up two-layer shielding layer inside the cable, utilize two-sided self-adhesion aluminium foil to form first shielding layer, chlorinated polyethylene elastomer material forms the cable sheath, the elasticity and the wear resistance of cable have been improved through chlorinated polyethylene elastomer's characteristic, and utilize other layering of first shielding layer bonding cable, the cable has been reduced when removing or warping, easy atress influences the damage, the unstable problem of communication, coaxial cable's application range and result of use have been expanded.

In order to solve the above problem, the utility model discloses a technical scheme do: a coaxial cable, the coaxial cable comprising: the shielding structure comprises a lead, a first insulating layer, a first shielding layer, a second shielding layer and a sheath, wherein the first insulating layer, the first shielding layer, the second shielding layer and the sheath are arranged around the lead in sequence; the first shielding layer is a double-sided self-adhesive aluminum foil, the sheath is formed by chlorinated polyethylene elastomer materials, and the thickness of the sheath is 0.75 mm.

Further, the conducting wire is a copper wire.

Further, the diameter of the wire is 1.02 mm.

Further, the first insulating layer is a foamed insulating layer.

Further, the diameter of the first insulating layer is 4.47 mm.

Further, the width of the double-sided self-adhesive aluminum foil is 18 mm.

Further, the second shielding layer is an aluminum magnesium alloy wire braided layer.

Further, the thickness of the second shielding layer is 0.16 mm.

Compared with the prior art, the beneficial effects of the utility model reside in that: set up two-layer shielding layer in cable inside, utilize two-sided self-adhesion aluminium foil to form first shielding layer, chlorinated polyethylene elastomer material forms the cable sheathing, the elasticity and the wear resistance of cable have been improved through chlorinated polyethylene elastomer's characteristic, and utilize other layering of first shielding layer bonding cable, it is damaged to have reduced the cable when removing or warping, easy atress influence, and the unstable problem of communication has expanded coaxial cable's application range and result of use.

Drawings

Fig. 1 is a cross-sectional view of an embodiment of the coaxial cable of the present invention.

In the figure: 1. a wire; 2. a first insulating layer; 3. a first shielding layer; 4. a second shielding layer; 5. a sheath.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

Referring to fig. 1, fig. 1 is a cross-sectional view of an embodiment of a coaxial cable according to the present invention, wherein the cross-sectional view of fig. 1 is a transverse cross-sectional view of the coaxial cable, and the coaxial cable according to the present invention is described in detail with reference to fig. 1.

In the present embodiment, the coaxial cable includes: the lead wire comprises a lead wire 1, a first insulating layer 2, a first shielding layer 3, a second shielding layer 4 and a sheath 5, wherein the first insulating layer 2, the first shielding layer 3, the second shielding layer 4 and the sheath 5 are arranged around the lead wire 1 in sequence; the first shielding layer 3 is a double-sided self-adhesive aluminum foil, the sheath 5 is formed by a chlorinated polyethylene elastomer material, and the thickness is 0.75 mm.

In this embodiment, the diameter of the sheath 5 is 6.9 mm.

In this embodiment, the material constituting the wire 1 is a copper wire, wherein the copper wire may be a single copper wire or formed by twisting a plurality of copper wires, and in other embodiments, the material constituting the wire 1 may be aluminum, aluminum alloy, or other materials capable of transmitting data.

In a preferred embodiment, the wire 1 is a copper wire and the diameter of the wire 1 is 1.02 mm.

In this embodiment, the first insulating layer 2 is a foamed insulating layer, and the foamed insulating layer is an insulating structure formed by physically foaming polyethylene, and the insulating structure is formed by injecting nitrogen at a high pressure.

In other embodiments, the foamed insulating layer may be an insulating structure formed of chemically foamed polyethylene, and may be formed of one or more materials such as foamed polyurethane, foamed polyvinyl chloride, foamed polystyrene, foamed polyphenylene, and foamed phenol resin.

In a preferred embodiment, the diameter of the foamed insulating layer is 4.47 mm.

In this embodiment, the double-sided self-adhesive aluminum foil has a width of 18mm and a thickness of 0.01 mm.

In this embodiment, the second shielding layer 4 is an aluminum magnesium alloy wire braid. In other embodiments, the second shielding layer 4 may also be a copper wire or a tinned copper wire braid.

In a specific embodiment, the second shield layer 4 is a 90% braid density braid of al-mg alloy wires having a thickness of 0.16 mm.

In the present embodiment, the sheath 5 is made of a highly elastic environmentally friendly polyvinyl chloride material. In other embodiments, the sheath 5 may also be a sheath 5 made of low smoke zero halogen, polyvinyl chloride, high density polyethylene, rubber, silicone rubber, polyurethane, and other insulating materials.

In the present embodiment, in order to improve the wear resistance of the coaxial cable, the sheath 5 is formed by a low-temperature high-pressure extrusion technique, which is to increase the temperature of the extrusion section in the extruder and increase the extrusion pressure, the temperature of the extrusion section is increased by 15-20 degrees celsius compared to the temperature of the existing sheath 5 during production, and the increased extrusion pressure can be set according to the size and structure of the sheath 5 and the actual performance of the extruder. The technology neutralizes the rebound pressure of the elastomer plastic in the extrusion process, so that the elastomer plastic is uniformly plasticized in a plasticizing section, and the purpose of uniform extrusion is achieved.

In the present embodiment, in order to further improve the wear resistance, the molding zone of the mold for the sheath 5 used for the sheath 5 is lengthened, and the temperature of the sizing zone at the time of manufacturing the sheath 5 is increased. Specifically, the temperature in the forming area is increased by 2-3mm relative to the original length, the temperature increase degree of the sizing area can be set according to the actual production condition, and only the surface of the sheath 5 needs to be smooth and round, so that the wear resistance of the sheath 5 is further improved.

Through the structure and the material of using, the utility model discloses a coaxial cable is fit for removing repeatedly and uses, has advantages such as environmental protection safety simultaneously.

Has the advantages that: the utility model discloses a coaxial cable sets up two-layer shielding layer in cable inside, utilize two-sided self-adhesion aluminium foil to form first shielding layer, chlorinated polyethylene elastomer material forms the cable sheath, the elasticity and the wear resistance of cable have been improved through chlorinated polyethylene elastomer's characteristic, and utilize other layering of first shielding layer bonding cable, it is when removing or warping to have reduced the cable, easy atress influences the damage, the unstable problem of communication has expanded coaxial cable's application range and result of use.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (8)

1. A coaxial cable, comprising: the shielding structure comprises a lead, a first insulating layer, a first shielding layer, a second shielding layer and a sheath, wherein the first insulating layer, the first shielding layer, the second shielding layer and the sheath are arranged around the lead in sequence;

the first shielding layer is a double-sided self-adhesive aluminum foil, the sheath is formed by chlorinated polyethylene elastomer materials, and the thickness of the sheath is 0.75 mm.

2. The coaxial cable of claim 1, wherein said conductor is a copper wire.

3. The coaxial cable of claim 1, wherein the wire has a diameter of 1.02 mm.

4. The coaxial cable of claim 1, wherein the first insulating layer is a foamed insulating layer.

5. The coaxial cable of claim 4, wherein the diameter of the first insulating layer is 4.47 mm.

6. The coaxial cable of claim 1, wherein the double-sided self-adhesive aluminum foil has a width of 18 mm.

7. The coaxial cable of claim 1, wherein said second shield layer is an aluminum magnesium alloy wire braid.

8. The coaxial cable of claim 7, wherein the second shielding layer has a thickness of 0.16 mm.

Images