CN210200930U

CN210200930U - Flat multi-core coaxial radio frequency cable

Info

Publication number: CN210200930U
Application number: CN201921114182.XU
Authority: CN
Inventors: Zhongliang Xie; 谢中良
Original assignee: Jiangsu Elesun Cable Co Ltd
Current assignee: Jiangsu Elesun Cable Co Ltd
Priority date: 2019-07-16
Filing date: 2019-07-16
Publication date: 2020-03-27
Anticipated expiration: 2029-07-16

Abstract

The utility model discloses a flat multicore coaxial radio frequency cable, include several parallelly connected cable conductor that are wrapped up by a flat oversheath, cable conductor both sides all are equipped with the stretch-proofing rope, the oversheath inner face is equipped with the shielding layer, pack polysulfide glue in the clearance between cable conductor and stretch-proofing rope and the shielding layer in the oversheath. The utility model ensures the excellent electrical performance and softness of the coaxial cable core wire; meanwhile, the device has the advantages of small occupied space, convenience in installation and convenience in folding and unfolding; the method is not only suitable for signal transmission of radio communication equipment in vehicle-mounted and other mobile application occasions, but also can be used for signal transmission of radio communication equipment in general places, and has good use effect.

Description

Flat multi-core coaxial radio frequency cable

Technical Field

The utility model relates to a flat multicore coaxial radio frequency cable.

Background

Generally, a coaxial cable is used for transmitting electric signals in a single form, and with the development of high technology, the communication field is greatly changed, and it is common for the same telecommunication equipment to transmit multiple high-frequency signals simultaneously. The use of several independent cables for multiplex signal transmission makes the connection between telecommunication devices extremely complicated. Especially, in the application occasion that the movement is frequently needed, the winding and unwinding of a plurality of independent cables are very inconvenient. Particularly when telecommunications systems are used in military applications, it is important to minimize the time required for equipment disassembly and erection once a site needs to be transferred. Chinese patent document CN204066873U discloses a multi-core coaxial radio frequency cable, in which a plurality of single-core coaxial cables are twisted around a foamed polyethylene filler core to form an integral multi-core coaxial radio frequency cable. Although the design solves the problem of troublesome connection between a plurality of independent cables and telecommunication equipment, the plurality of cables are stranded around the filling core, and the stranded rate, the attenuation value and the like need to be calculated in a complex way to ensure the electrical performance of each core wire in the multi-core coaxial radio-frequency cable; in addition, due to the circular design, the bending diameter of the cable is large, and when the cable is installed, the required space is large particularly during turning, so that the cable is easy to scratch; and the adopted polyethylene rope has the problems of easy strain and breaking due to insufficient tensile strength. In view of the above, there is a need for an improved coaxial cable for use in signal transmission in radio communication devices for vehicle and other mobile applications, which does not occupy space and has better tensile strength, and which is not easy to install.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model provides a flat multicore coaxial radio frequency cable connects several coaxial cable heart yearns in parallel, guarantees good electrical properties of coaxial cable heart yearn and compliance, does not account for the space simultaneously. The specific technical scheme is as follows:

a flat multi-core coaxial radio frequency cable comprises a plurality of parallel cable cores wrapped by a flat outer sheath, tensile ropes are arranged on two sides of each cable core, a shielding layer is arranged on the inner surface of the outer sheath, and polysulfide glue is filled in gaps among the cable cores in the outer sheath, the tensile ropes and the shielding layer.

According to the flat multi-core coaxial radio-frequency cable, the cable core is a single-core coaxial cable and comprises an inward central conductor, an outward insulating layer, an outward conductor coaxial with the central conductor and an inner sheath.

Preferably, in the flat multi-core coaxial radio-frequency cable, the insulating layer is a multi-layer microporous polytetrafluoroethylene tape wrapping.

Preferably, in the flat multi-core coaxial radio-frequency cable, the cores of the plurality of parallel single-core coaxial cables are connected in parallel in a single layer or in parallel in multiple layers.

Preferably, in the flat multi-core coaxial radio frequency cable, the shielding layer is made of aluminum foil.

Preferably, in the flat multi-core coaxial radio frequency cable, the tensile cord is a steel rope.

Preferably, in the flat multicore coaxial radio frequency cable, the outer sheath and the inner sheath are both low smoke zero halogen polyolefin extrusion layers.

The utility model has the advantages that:

the utility model connects a plurality of coaxial cable core wires in parallel, thereby ensuring the excellent electrical property and softness of the coaxial cable core wires; meanwhile, the novel folding and unfolding device has the advantages of small occupied space, convenience in installation and convenience in folding and unfolding. The utility model discloses not only be applicable to the radio communication equipment signal transmission of on-vehicle and other mobile application occasions, also can regard as the radio communication equipment signal transmission in general place to use to good result of use has.

Drawings

Fig. 1 is a schematic structural view of the flat multi-core coaxial rf cable of the present invention;

fig. 2 is a schematic view of the multi-layer structure of the flat multi-core coaxial rf cable.

In the figure: 1. an outer sheath; 2. a cable core; 201. a center conductor; 202. an insulating layer; 203. an outer conductor; 204. an inner sheath; 3. a tensile strand; 4. a shielding layer; 5. polysulfide glue.

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. The specific embodiment is as follows:

a flat multi-core coaxial radio frequency cable is shown in figure 1 and comprises a plurality of parallel cable core wires 2 wrapped by a flat outer sheath 1, tensile ropes 3 are arranged on two sides of each cable core wire 2, a shielding layer 4 is arranged on the inner surface of the outer sheath 1, and polysulfide glue 5 is filled in gaps among the cable core wires 2, the tensile ropes 3 and the shielding layer 4 in the outer sheath 1. The design ensures the excellent electrical performance and softness of the core wire of the coaxial cable; meanwhile, the wireless communication device has the advantages of small occupied space, convenience in installation and convenience in folding and unfolding, is suitable for signal transmission of wireless communication devices in vehicle-mounted and other mobile application occasions, can be used for signal transmission of wireless communication devices in general places, and has a good using effect.

In the flat multi-core coaxial rf cable according to this embodiment, the cable core 2 is a single core coaxial cable, and includes a center conductor 201, an insulating layer 202, an outer conductor 203 coaxial with the center conductor 201, and an inner sheath 204 from inside to outside. The insulating layer 202 is preferably a multi-layer microporous teflon tape wrap.

In the flat multi-core coaxial rf cable of this embodiment, the plurality of parallel single-core coaxial cable cores 2 may be connected in parallel in multiple layers in addition to the single-layer parallel connection shown in fig. 1, and as shown in fig. 2, the flat multi-core coaxial rf cable is an embodiment of a double-layer parallel connection.

In this embodiment, the shielding layer 4 is preferably made of aluminum foil; the tensile rope 3 is preferably a steel rope, so that the tensile strength is increased; the outer sheath 1 and the inner sheath 204 are both low smoke zero halogen polyolefin extrusion layers.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A flat multicore coaxial radio frequency cable which is characterized in that: the cable core wire protection device is characterized by comprising a plurality of parallel cable core wires (2) wrapped by a flat outer sheath (1), wherein tensile ropes (3) are arranged on two sides of each cable core wire (2), a shielding layer (4) is arranged on the inner surface of the outer sheath (1), and polysulfide glue (5) is filled in a gap between each cable core wire (2) in the outer sheath (1) and each tensile rope (3) and each shielding layer (4).

2. The ribbon-shaped multi-core coaxial radio frequency cable of claim 1, wherein: the cable core wire (2) is a single-core coaxial cable and comprises a central conductor (201) from inside to outside, an insulating layer (202), an outer conductor (203) coaxial with the central conductor (201) and an inner sheath (204).

3. The ribbon-shaped multi-core coaxial radio frequency cable of claim 2, wherein: the insulating layer (202) is a multi-layer micropore polytetrafluoroethylene tape wrapping.

4. The ribbon-shaped multi-core coaxial radio-frequency cable as claimed in claim 1 or 2, wherein: the plurality of parallel single-core coaxial cable core wires (2) are connected in parallel in a single layer or in multiple layers.

5. The ribbon-shaped multi-core coaxial radio frequency cable of claim 1, wherein: the shielding layer (4) is made of aluminum foil.

6. The ribbon-shaped multi-core coaxial radio frequency cable of claim 1, wherein: the tensile rope (3) is a steel rope.

7. The ribbon-shaped multi-core coaxial radio-frequency cable as claimed in claim 1 or 2, wherein: the outer sheath (1) and the inner sheath (204) are low-smoke halogen-free polyolefin extrusion layers.