CN201838387U - Copper-clad aluminum knitting coaxial cable - Google Patents

Abstract

The utility model relates to a copper-clad aluminum knitting coaxial cable, which comprises an insulation core wire formed by extruding an expanded polyethylene insulation layer on a single solid copper conductor; a layer of copper-clad aluminum metal wire is knitted outside the insulation wire core to serve as a coaxial outer conductor; a layer of polyvinyl chloride (PVC) inner sheath is extruded by clinging to the outer conductor to form a plurality of unit coaxial wire cores; the unit coaxial wire cores are gathered into a cable core; a polyester film cladding layer and a shielding layer knitted by a copper-clad aluminum metal wire are lapped and a layer of PVC outer sheath is extruded outside the cable core in sequence. The utility model has the advantages that the material of the cable has good generality; the low frequency-band communication index is stable; the main index requirements of impedance and attenuation can be completely satisfied when in 1-2MHz, which is completely proved by test detection. The cable has reduced weight and low cost and is convenient to process.

Description

Copper Clad Aluminum Braided Coaxial Cable

technical field

The utility model relates to a communication cable suitable for transmitting analog signals and digital signals at a low frequency bandwidth of 1-2MHz, a copper-clad aluminum cable mainly used in the transmission of radio frequency signals in fixed or mobile wireless communication and electronic devices of similar technology Braided coaxial cable.

Background technique

The rapid development of electronic and telecommunication equipment in today's world requires various forms of communication transmission. The market competition between cable buyers and sellers is extremely hot. Low-end and mid-end telecom users require cables that can ensure communication requirements while reducing costs as much as possible. Cable manufacturers have to improve technology, conduct independent research and development, and occupy market share through cable modification and other technical means to achieve sales. Both parties win.

Contents of the invention

In view of the requirements of the prior art, the utility model provides a copper-clad aluminum braided coaxial cable, which can fully meet the requirements of market users from the selection of constituent materials to the design of the structure.

In order to achieve the above purpose, the utility model adopts the following technical solution: a copper-clad aluminum braided coaxial cable, which is characterized in that it includes a single solid-core copper conductor that is extruded and wrapped with a layer of foamed polyethylene insulating layer. Insulated core wire, a layer of copper-clad aluminum metal wire is braided outside the insulated wire core as the coaxial outer conductor, and a layer of PVC inner sheath is extruded close to the outer conductor to form a unit coaxial core, and multiple unit coaxial wires The cores are assembled into a cable core, and a layer of polyester film coating layer, copper-clad aluminum metal wire braided shielding layer, and a layer of PVC outer sheath are wrapped around it in turn.

The beneficial effects of the utility model are as follows: 1. The cable material has good versatility: the foam insulation technology has matured and is generally used in the field of micro-coaxial cables, and the electrician round copper wire and the environmental protection PVC material have strong versatility. 2. Stable low-frequency communication indicators: Copper-clad aluminum braiding replaces copper wire braiding. According to the principle of electrotechnical skin effect, it can fully meet the main index requirements of impedance and attenuation at 1-2MHz, and the test test also fully proves this point. 3. Copper-clad aluminum material is used for the outer conductor and the overall braiding to reduce the weight of the cable itself: copper-clad aluminum replaces copper wire braiding, and the proportion of the former is only about 1/3 of copper wire, so the weight of the cable is reduced. 4. Low cost: the cable is made of light-weight copper-clad aluminum material, the cost of the cable is reduced, and the market price competition advantage is obvious. 5. Convenient processing: use general communication cable manufacturing equipment for processing, the equipment has strong versatility and is convenient and simple.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Detailed ways

As shown in Figure 1, the copper-clad aluminum braided coaxial cable includes an insulated core wire formed by extruding a layer of foamed polyethylene insulation layer 1-2 on the outside of a single solid copper conductor 1-1. Weave a layer of copper-clad aluminum wire as the coaxial outer conductor 1-3, and extrude a layer of PVC inner sheath 1-4 close to the outer conductor 1-3 to form a unit coaxial core 1, and multiple unit coaxial cores 1 is assembled into a cable core, and a layer of polyester film coating layer 2, a copper-clad aluminum metal wire braided shielding layer 3, and a layer of PVC outer sheath 4 are wrapped around it in sequence. There are seven coaxial cores 1 of multiple units.

The utility model can be manufactured through the following process: use a wire and cable copper wire drawing machine to produce a single solid copper conductor 1-1 of required size as the inner conductor; use an ordinary extruder to extrude the outer conductor 1-1 The foamed polyethylene insulating layer 1-2 constitutes the insulating wire core, and the ordinary cable metal braiding machine realizes uniform braiding of copper-clad aluminum outside the insulating wire core as the outer conductor 1-3, and an ordinary extruder is used to complete the PVC inner sheath 1- 4 Process the coaxial core 1 of the constituent unit; arrange the multiple units in a regular arrangement on the cable forming machine for cable assembly, wrap the polyester film covering layer 2 around it, and then weave copper-clad aluminum on the metal braiding machine to make The overall shielding 3, the outermost layer is extruded by an extruder to wrap a layer of PVC outer sheath 4.

Claims (2)

1. copper cover aluminum braided coaxial cable, it is characterized in that: be included in the outer insulation heart yearn that extrudes one deck polyethylene foamed insulating barrier (1-2) formation of single real core copper conductor (1-1), outside insulated wire cores, weave layer of copper alclad metal wire as coaxial outer conductor (1-3), be close to outer conductor (1-3) and extrude one deck PVC inner sheath (1-4) formation coaxial core in unit (1), the many coaxial cores in described unit (1) assemble cable conductor, wrapped successively one deck polyester film coating layer (2) outside it, the screen (3) of copper cover aluminum metal wire braiding, extrude one deck PVC oversheath (4).

2. copper cover aluminum braided coaxial cable according to claim 1 is characterized in that: the coaxial cores of described many root units (1) are seven.

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