Audio and video cable for radio and television

Abstract

The utility model provides an audio and video cable for radio and television, which comprises an outer sheath, a reinforcing sheath is sleeved in the outer sheath, a cross-linked silicone rubber sheath is sleeved in the reinforcing sheath, and an air cooling pipe, an audio wire harness and a video wire core are wrapped in the cross-linked silicone rubber sheath. The audio and video cable for radio and television is applied to digital communication of civil radio and television, aerospace, offshore platforms and warfare ships and modern information communication of data link operation, and can provide reliable communication for large-flow high-definition high-frequency band special equipment users in an extreme temperature environment.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the high frequency high definition large flow data information communication and equipment control network transmission wire material field of civilian television broadcast, warship and offshore platform etc., specifically relates to an audio and video cable for broadcasting television. BACKGROUND

[0002] The existing communication data cable usually adopts optical fiber cable, super six categories and seven categories data network line as high frequency communication cable. However, the outer sheath and insulation of optical fiber cable and high frequency data network cable adopt polyolefin material. The civilian television broadcast relay station is often built on the high mountain, and the humidity is high and the temperature is low. The control cable installation part of the heating element such as engine and generator of equipment such as warship not only faces the complex corrosive environment of high humidity and high salt content, but also the working temperature can reach above 200 DEG C. The ordinary polyolefin insulation and outer sheath material can be melted instantaneously. The existing optical fiber cable has high installation requirement, especially the joint part. In the static wiring occasion, the optical fiber product has obvious advantages such as large flow, long service life and stable signal. However, in the mobile equipment, the defects such as limited bending radius of optical signal refraction requirement, obvious signal attenuation caused by color dispersion due to slight misalignment of joint become the technical problems difficult to solve in practical application. The seven categories data network line with the most advanced technology adopts line pair balance technology, channel independent shielding technology and strong electromagnetic interference braided shielding technology, so that the data transmission capacity reaches 1000 MHZ, and the flow reaches above 10 GB. However, due to the material and structure limitation, the product cannot adapt to the severe working environment of high humidity, below minus 40 DEG C and above zero 200 DEG C, and becomes the dangerous source of failure of expensive television broadcast, warship and other equipment at any time. CONTENT OF THE UTILITY MODEL

[0003] In view of this, the utility model aims at providing an audio and video cable for broadcasting television, which can overcome the above problems or at least partially solve or alleviate the above problems.

[0004] The utility model provides an audio and video cable for broadcasting television, which comprises an outer sheath, a reinforcing sheath is sleeved in the outer sheath, a crosslinked silicone rubber sheath is sleeved in the reinforcing sheath, and a forced air cooling pipe, an audio wire harness and a video wire core are wrapped in the crosslinked silicone rubber sheath.

[0005] The utility model also has the following optional features.

[0006] Optionally, the outer sheath adopts a glass fiber braided outer sheath.

[0007] Optionally, the reinforcing sheath adopts an aramid fiber sheath.

[0008] Optionally, the video core comprises stranded silver-plated copper conductors, the stranded silver-plated copper conductors are provided with a high-strength adhesive layer outside, the high-strength adhesive layer is provided with a cold-resistant crosslinked silicone rubber insulation layer outside, and the cold-resistant crosslinked silicone rubber insulation layer is provided with an aluminum foil shielding layer outside.

[0009] Optionally, the audio harness comprises a plurality of soft silver-plated copper conductors, each of the soft silver-plated copper conductors is provided with a crosslinked silicone rubber insulation layer outside, the crosslinked silicone rubber insulation layer is provided with an aluminum foil wrapping shielding layer outside, and the outermost layer of the audio harness is provided with a self-adhesive aluminum foil shielding layer.

[0010] Optionally, the air-cooled tube is a steel spring tube.

[0011] The utility model discloses a beneficial effect:

[0012] The audio and video cable for broadcasting television has excellent weather resistance, corrosion resistance, repeated bending strength and mechanical strength, can adapt to the working requirement of ship crossing the ocean and polar region, can bear the high-strength water pressure of deep-sea wiring of submarine detection instrument, can work in the outer space with complex temperature environment along with aerospace equipment, has stable structure, convenient installation, good wear resistance, impact resistance and tear resistance, can prevent weathering, ozone and ultraviolet rays, has good acid and alkali resistance, oil resistance and salt-containing liquid resistance, has low-temperature resistance, coolant and lubricant resistance, has high transmission frequency band, reaches the latest product design level of international data communication cable, has clear communication signal and large flow, is suitable for the construction of aerospace equipment, ship combat and operation data link, has large-area mineral oil and animal fat resistance, is halogen-free and flame-retardant, and does not produce corrosive gas. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the cross section structure schematic drawing of the audio and video cable for broadcasting television of the utility model,

[0014] Figure 2 It is the cross section structure schematic drawing of the video core in Figure 1 ,

[0015] Figure 3 It is the cross section structure schematic drawing of the audio harness in Figure 1 .

[0016] In the above figure: 1, video core; 101, stranded silver-plated copper conductor; 102, high-strength adhesive layer; 103, cold-resistant crosslinked silicone rubber insulation layer; 104, aluminum foil shielding layer; 2, audio harness; 201, silver-plated copper conductor; 202, crosslinked silicone rubber insulation layer; 203, aluminum foil wrapping shielding layer; 204, self-adhesive aluminum foil shielding layer; 3, cold air tube; 4, crosslinked silicone rubber sheath; 5, reinforcing sheath; 6, outer sheath.

[0017] The utility model will make further detailed instructions below combining with the drawings and examples; DETAILED DESCRIPTION

[0018] Reference Figure 1 The utility model discloses an audio and video cable for broadcasting television, which comprises an outer sheath 6, wherein the outer sheath 6 is sleeved with a reinforcing sheath 5, the reinforcing sheath 5 is sleeved with a crosslinked silicone rubber sheath 4, and the crosslinked silicone rubber sheath 4 is wrapped with air cooling pipes 3, audio line bundles 2 and video line cores 1.

[0019] As Figure 1 shown, three video line cores 1, two audio line bundles 2 and two air cooling pipes 3 are arranged transversely and spacedly, wherein the two air cooling pipes 3 are adjacent to the three video line cores 1 and the two audio line bundles 2, and are used for cooling the audio line bundles 2 and the video line cores 1; the video line cores 1, the audio line bundles 2 and the air cooling pipes 3 are wrapped with the crosslinked silicone rubber sheath 4, the crosslinked silicone rubber sheath 4 is wrapped with the reinforcing sheath 5, and the reinforcing sheath 5 is wrapped with the outer sheath 6.

[0020] The video line cores 1 and the audio line bundles 2 are convenient for modular installation, can reduce cost and save maintenance time, and have powerful signal transmission function. The crosslinked silicone rubber sheath 4 is a cold-resistant and corrosion-resistant crosslinked silicone rubber sleeve, has low electromagnetic loss, high tensile strength, good corrosion resistance and temperature resistance. The cold-resistant and corrosion-resistant crosslinked silicone rubber sleeve has a maximum applicable temperature range of -120 DEG C to 350 DEG C, and is commonly used in polar exploration equipment. The reinforcing sheath 5 is used for enhancing the strength of the cable and keeping the cable warm. The outer sheath 6 is made of double-layer high-flexibility and high-strength glass fiber braid which has good chemical corrosion resistance and excellent electrical performance and good flexibility. The material is commonly used for the sheath of ships and aviation electronic products. The material ensures that the product can be used for a long time within the range of -80 DEG C to 300 DEG C, and can be temporarily used in the working environment of -120 DEG C to 350 DEG C.

[0021] Reference Figure 1 According to one embodiment of the utility model, the outer sheath 6 is made of flexible glass fiber braided outer sheath.

[0022] The outer sheath 6 is made of double-layer high-flexibility and high-strength glass fiber braid which has good chemical corrosion resistance, excellent electrical performance and good flexibility. The material is commonly used for the sheath of ships and aviation electronic products. The material ensures that the product can be used for a long time within the range of -80 DEG C to 300 DEG C, and can be temporarily used in the working environment of -120 DEG C to 350 DEG C.

[0023] The outer sheath 6 is a flexible glass fiber woven outer sheath, which is a key component for ensuring the stable product structure. The outer sheath is woven with soft glass fiber threads as the material, and a layer of outer sheath with a density of not less than 95% is woven on the outer layer of the cable. It can ensure that the cables of different specifications have stable product structures. The product circumference increases by 10 cm, and the weaving thickness of the flexible glass fiber woven outer sheath increases by 0.5 mm. The thickness of the flexible glass fiber woven outer sheath is adjusted mainly by the following two methods: 1. selecting different numbers of flexible glass fiber threads to weave an outer sheath with different thicknesses; and 2. selecting the same number of flexible glass fiber threads to weave an outer sheath with the same thickness, and increasing or decreasing the number of woven layers to achieve the required thickness of the outer sheath.

[0024] With reference to Figure 1 According to an embodiment of the present application, the reinforcing sheath 5 is made of aramid fiber sheath.

[0025] The reinforcing sheath 5 is made of aramid fiber woven, which has excellent properties such as temperature resistance, flame resistance and high strength, and plays a role in enhancing the strength of the cable and the heat preservation of the cable.

[0026] With reference to Figure 1 and Figure 2 According to an embodiment of the present application, the video core 1 comprises a twisted silver-plated copper conductor 101, an outer high-strength adhesive layer 102 is provided outside the twisted silver-plated copper conductor 101, a cold-resistant cross-linked silicone rubber insulation layer 103 is sleeved outside the high-strength adhesive layer 102, and an aluminum foil shielding layer 104 is wound outside the cold-resistant cross-linked silicone rubber insulation layer 103.

[0027] The twisted silver-plated copper conductor 101 is a twisted annealed silver-plated copper conductor, which has high softness, can be finely twisted, and has good roundness and smoothness on the surface. The high-strength adhesive layer 102 outside the twisted silver-plated copper conductor 101 is made of high-density polyolefin, and the high-strength adhesive layer 102 and the cold-resistant cross-linked silicone rubber insulation layer 103 on the outer side thereof have low electromagnetic loss, high tensile strength, good corrosion resistance and temperature resistance. The maximum temperature range of the cold-resistant cross-linked silicone rubber is -120℃ to 350℃, which is widely used in polar exploration equipment, and can ensure that the core works normally at extreme temperatures. The aluminum foil shielding layer 104 adopts self-adhesive aluminum foil wrapping shielding, has good structural stability, and has good shielding effect on 0~1000MHZ high-frequency pulse interference.

[0028] With reference to Figure 1 and Figure 3According to an embodiment of the utility model, audio harness 2 contains many soft silver plated copper conductor 201, each soft silver plated copper conductor 201 is equipped with crosslinked silicone rubber insulation layer 202, crosslinked silicone rubber insulation layer 202 is equipped with aluminium foil wrapping shielding layer 203, the outermost layer of audio harness 2 is equipped with self -adhesive aluminium foil shielding layer 204.

[0029] Soft silver plated copper conductor 201 is fine twisted copper conductor, crosslinked silicone rubber insulation layer 202 can work normally under extreme temperature, in addition, in order to avoid signal leakage, aluminium foil wrapping shielding layer 203 is arranged outside the crosslinked silicone rubber insulation layer 202 of each fine twisted soft silver plated copper conductor 201, finally, self -adhesive aluminium foil shielding layer 204 is wrapped outside the audio harness 2 formed by many soft silver plated copper conductor 201 equipped with crosslinked silicone rubber insulation layer 202 and aluminium foil wrapping shielding layer 203, so that audio harness 2 has good shielding effect to 0 ~ 1000 MHZ high frequency pulse interference.

[0030] Reference Figure 1 According to an embodiment of the utility model, air cooling pipe 3 is steel spring pipe.

[0031] Air cooling pipe 3 adopts dense spring pipe made of high-strength high-elasticity ultrathin body rectangular spring steel, and has high strength, good flexibility and excellent tensile property, can timely take away the heat generated inside the cable during use, ensures the cable to work in reasonable temperature range, and can send hot air generated by heating equipment into the cable inside at extremely low temperature, ensures the cable to work normally at extremely low temperature outdoors.

[0032] The above is only the preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model. Therefore, the protection scope of the utility model should be limited to the protection scope of claims. The components and structures not described in the embodiment are the known components and common structures or common means in the industry, which are not described here.

Claims

1. An audio and video cable for broadcasting and television, characterized in that, include: The outer sheath (6) is fitted with a reinforcing sheath (5) inside the outer sheath (6), and a cross-linked silicone rubber sheath (4) is fitted inside the reinforcing sheath (5). The cross-linked silicone rubber sheath (4) contains a cooling pipe (3), an audio cable harness (2), and a video cable core (1).

2. The audio and video cable for broadcasting and television according to claim 1, characterized in that, The outer sheath (6) is made of glass fiber woven outer sheath.

3. The audio and video cable for broadcasting and television according to claim 1, characterized in that, The reinforcing sheath (5) is made of aramid fiber.

4. The audio and video cable for broadcasting and television according to claim 1, characterized in that, The video cable core (1) includes a stranded silver-plated copper conductor (101), a high-strength adhesive layer (102) is provided on the outside of the stranded silver-plated copper conductor (101), a cold-resistant cross-linked silicone rubber insulation layer (103) is fitted on the outside of the high-strength adhesive layer (102), and an aluminum foil shielding layer (104) is wrapped around the cold-resistant cross-linked silicone rubber insulation layer (103).

5. The audio and video cable for broadcasting and television according to claim 1, characterized in that, The audio cable harness (2) includes multiple flexible silver-plated copper conductors (201), each of which is covered with a cross-linked silicone rubber insulation layer (202), which is covered with an aluminum foil wrapping shielding layer (203), and the outermost layer of the audio cable harness (2) is covered with a self-adhesive aluminum foil shielding layer (204).

6. The audio and video cable for broadcasting and television according to claim 1, characterized in that, The air-cooled pipe (3) is a steel spring pipe.

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