Special cable for underwater audio and video transmission

Abstract

The utility model relates to a communication wire, in particular to a special cable for underwater audio and video transmission, which comprises a coaxial cable and seven groups of twisted-pair cables, and is different from the prior art in that the seven groups of twisted-pair cables and two PP (polypropylene) ropes for improving tensile strength are spirally wound around the coaxial cable; and the seven groups of twisted-pair cables and the two PP ropes are coated with a waterproof polyurethane sheath. Compared with the prior art, the cable provided by the utility model reduces the winding of cables, improves the tensile strength, is excellent in waterproof performance, reduces the signal interference, and can transmit various signals at the same time.

Description

Technical Field

[0001] The utility model relates to communication wires and cables, and particularly to a special cable for underwater audio and video transmission. Background Art

[0002] At present, wireless communication has not been realized for underwater divers to communicate with personnel on board or ashore, and cables are still required. Currently, commercially available video cables and audio cables are usually independent and prone to entanglement.

[0003] Chinese utility model with publication number CN201000784Y discloses a combined cable, including 1 double-parallel coaxial cable. The double-parallel coaxial cable is composed of 2 coaxial cables arranged in parallel. The outer sheaths of the 2 coaxial cables are connected by a coaxial cable connecting band. It also includes 1 multi-core wire. The multi-core wire is located on one side of the extension line of the center connection of the 2 coaxial cables. The outer sheath of the multi-core wire is connected to the outer sheath of the adjacent coaxial cable by a multi-core wire connecting band. The utility model can simultaneously transmit two-way audio / video signals and two or more telephone and network data signals. It is an easy-to-wire combined cable with small occupied space for wiring, beautiful wiring, and easy to split when branching. However, since its 3 cables are connected by connecting bands, the cross-sectional shape is irregular, it is prone to rubbing underwater and not suitable. At the same time, its tensile strength is insufficient, the upstream and downstream audio will interfere with each other, the video and audio will also interfere with each other, and there will also be interference between the power supply line and the video or audio signal. Summary of the Utility Model

[0004] The utility model provides a special cable for underwater audio and video transmission, aiming to solve one or more of the above technical problems existing in the prior art.

[0005] The utility model is realized as follows: A special cable for underwater audio and video transmission includes 1 coaxial cable and 7 groups of twisted pair cables. Different from the prior art, the 7 groups of twisted pair cables and 2 PP ropes for enhancing tensile strength are spirally wound around the coaxial cable, and a waterproof polyurethane sheath is coated outside the 7 groups of twisted pair cables and the 2 PP ropes.

[0006] Further, a Kevlar braided layer is arranged between the 7 groups of twisted pair cables and the 2 PP ropes and inside the waterproof polyurethane sheath.

[0007] Further, 1 group of twisted pair cable is clamped between the 2 PP ropes.

[0008] Further, the coaxial cable includes a thick silver-plated copper wire, a foamed PE body, and a metal wire shielding sleeve. The thick silver-plated copper wire is located at the center of the cylindrical foamed PE body, and the metal wire shielding sleeve wraps around the surface of the foamed PE body.

[0009] Further, the twisted pair cable includes 2 fine silver-plated copper wires, 2 PE insulating layers, 1 drainage wire, and 1 aluminum foil shielding layer. The 2 fine silver-plated copper wires are respectively inserted into the 2 PE insulating layers of the same color, and the aluminum foil shielding layer covers the 2 fine silver-plated copper wires, the 2 PE insulating layers, and the 1 drainage wire.

[0010] Further, the colors of the PE insulating layers in the 7 groups of twisted pair cables are different, and are respectively red, yellow, brown, black, blue, green, and white.

[0011] Further, waterproof glue is injected into the gaps between the 7 groups of twisted pair cables and the 2 PP ropes.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] Reduced cable entanglement: Through the design of spirally winding the twisted pair cable and the PP rope around the coaxial cable, both the stability of the cable is ensured, and the mutual entanglement between the cables is avoided, reducing the difficulty of cabling.

[0014] Improved tensile strength: The high-tensile-strength PP rope is added inside the cable, which can make the cable more firm and durable when used underwater, reducing the risk of damage caused by insufficient tensile strength of the cable.

[0015] Excellent waterproof performance: The outer part of the cable is coated with a waterproof polyurethane sheath, which is crucial for cables used underwater. It can prevent the intrusion of moisture and ensure the transmission quality of audio and video signals.

[0016] Reduced signal interference: The cable uses a twisted pair cable, which can cancel the magnetic fields generated between the two relatively rotating wires, thereby resisting external electromagnetic interference and improving the stability of signal transmission of the cable.

[0017] Capable of transmitting multiple signals simultaneously: The special cable includes a coaxial cable and seven groups of twisted pair cables. This design enables it to transmit audio, video, and other data signals simultaneously, improving the practicality of the cable.

[0018] In summary, the cable for underwater audio and video transmission of the present utility model effectively solves the problems of difficult cable cabling, insufficient tensile strength, and mutual signal interference existing in the prior art, and is a product with excellent practicality and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present utility model.

[0020] Reference numerals in the figure: coaxial cable - 1, thick silver-plated copper wire - 11, foamed PE body - 12, wire mesh shielding sleeve - 13, twisted pair cable - 2, thin silver-plated copper wire - 21, PE insulation layer - 23, drainage wire - 22, aluminum foil shielding layer - 24, PP rope - 3, waterproof polyurethane sheath - 4, Kevlar braided layer - 5. Detailed implementation mode

[0021] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0022] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, in the description of the present utility model, the meaning of "a plurality of" is two or more, unless otherwise specifically defined.

[0023] Please refer to Figure 1 , the present utility model provides a technical solution: a special cable for underwater audio and video transmission, including 1 coaxial cable 1 and 7 groups of twisted pair cables 2. The 7 groups of twisted pair cables 2 and 2 PP ropes 3 for improving tensile strength are spirally wound around the coaxial cable 1, and a waterproof polyurethane sheath 4 is coated outside the 7 groups of twisted pair cables 2 and the 2 PP ropes 3. Another technical effect of this embodiment has been mentioned in the foregoing text and will not be elaborated herein.

[0024] In another preferred embodiment, a Kevlar braided layer 5 is provided between the 7 groups of twisted pair cables 2 and the 2 PP ropes 3 and inside the waterproof polyurethane sheath 4. Kevlar is a very strong synthetic fiber and is widely used in making bulletproof vests because it can withstand high-intensity impacts. In wire design, the Kevlar braided layer means that the wire is more resistant to the effects of external forces, such as stretching, dropping or other physical pressures that may cause damage. The Kevlar braided layer can also help prevent wear of internal components. With this layer of protection, other elements in the wire (such as twisted pair cables, PP ropes, waterproof polyurethane sheath) will not be worn due to friction generated during daily use.

[0025] In another preferred embodiment, one double - twisted cable 2 is sandwiched between two of the PP ropes 3. In this embodiment, the configuration of the double - twisted cable and the PP ropes helps to maintain coaxiality. The double - twisted cable and the PP ropes are evenly distributed and located inside the cable, and can move flexibly and adapt to different environmental conditions without causing the cable to twist or curl. This arrangement of the cable components helps to ensure stable signal transmission and reduce signal loss or interference caused by cable twisting. Sandwiching one double - twisted cable 2 between two PP ropes 3, along with the existing Kevlar braided layer, will significantly improve the overall strength and tensile resistance of the cable. Both the PP ropes and Kevlar are strong tensile materials. Combined with the cross - section of the double - twisted cable, they together form a tough and tensile integral structure.

[0026] In another preferred embodiment, the coaxial cable 1 includes a thick silver - plated copper wire 11, a foamed PE body 12, and a wire mesh shielding sleeve 13. The thick silver - plated copper wire 11 is located at the center of the cylindrical foamed PE body 12, and the wire mesh shielding sleeve 13 wraps around the surface of the foamed PE body 12. The silver - plated copper wire can provide excellent electrical conductivity and good anti - attenuation performance for high - frequency signals. The foamed PE body 12, as a dielectric, can not only provide good insulation to prevent unintentional current leakage, but also prevent signal crosstalk. Moreover, the foamed PE body material is lightweight, which has a good effect on reducing the overall weight of the cable. The wire mesh shielding sleeve 13 wraps around the surface of the foamed PE body 12, which can provide good electromagnetic shielding, prevent external electromagnetic interference from affecting the signal transmission inside the cable, and at the same time prevent the signals inside the cable from interfering with the external environment.

[0027] In another preferred embodiment, the twisted pair cable 2 includes two fine silver-plated copper wires 21, two PE insulation layers 23, one drainage wire 22, and one aluminum foil shielding layer 24. The two fine silver-plated copper wires 21 are respectively inserted into the two PE insulation layers 23 of the same color. The aluminum foil shielding layer 24 covers the two fine silver-plated copper wires 21, the two PE insulation layers 23, and the one drainage wire 22. The colors of the PE insulation layers 23 in the seven groups of the twisted pair cables 2 are different, namely red, yellow, brown, black, blue, green, and white. The silver-plated copper wire has good electrical conductivity, good impedance stability for high-frequency signals, and can improve the loss caused by signal transmission within a certain range. The use of the PE insulation layer 23 can prevent current leakage, reduce the risk of cable damage, and at the same time, PE has good aging resistance and chemical resistance, which can extend the service life of the cable to a certain extent. The addition of the drainage wire 22 can further reduce the interference inside the cable by reducing the magnetic field inside the cable, improving the performance of the cable. The aluminum foil shielding layer 24 can prevent external electromagnetic interference and improve the transmission quality of the cable. Color coding is very helpful for cable management. The colors of the PE insulation layers 23 in the seven groups of the twisted pair cables 2 are different, and the color markings of yellow, brown, black, red, blue, green, and white can effectively help users identify and manage the cables, reduce the risk of misconnection, and facilitate actual operation.

[0028] In another preferred embodiment, waterproof glue is injected into the gaps between the seven groups of the twisted pair cables 2 and the two PP ropes 3. The waterproof glue can effectively prevent moisture and humidity from entering the cable interior, reduce the transmission performance loss caused by humidity, and improve the reliability of the cable in a humid environment. The waterproof glue fills the voids inside the cable, increases the overall strength of the cable, and improves its ability to resist external forces, such as being torn or bent. The filling of the waterproof glue also reduces the electromagnetic interference between the cables inside the cable, helping to optimize the transmission characteristics of the cable. Generally speaking, injecting waterproof glue into the cable can enhance the waterproof and moisture-resistant properties of the cable, improve the mechanical robustness of the cable, and also play a positive role in enhancing the overall signal transmission performance of the cable.

[0029] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A special cable for underwater audio and video transmission, comprising a coaxial cable (1) and seven groups of twisted pair cables (2), characterized in that: The seven groups of twisted-pair cables (2) and two PP ropes (3) with improved tensile strength are spirally wound around the coaxial cable (1), and the seven groups of twisted-pair cables (2) and the two PP ropes (3) are covered with a waterproof polyurethane sheath (4).

2. A special cable for underwater audio and video transmission according to claim 1, characterized in that: A Kevlar braided layer (5) is arranged outside the 7 groups of twisted-pair cables (2) and the 2 PP ropes (3) and inside the waterproof polyurethane sheath (4).

3. A special cable for underwater audio and video transmission according to claim 1, characterized in that: One twisted pair cable (2) is sandwiched between the two PP ropes (3).

4. The special cable for underwater audio and video transmission according to claim 1, characterized in that: The coaxial cable (1) comprises a thick silver-plated copper wire (11), a foamed PE body (12) and a metal wire shielding mesh sleeve (13), wherein the thick silver-plated copper wire (11) is located at the center of the cylindrical foamed PE body (12), and the metal wire shielding mesh sleeve (13) is wrapped around the surface of the foamed PE body (12).

5. The special cable for underwater audio and video transmission according to claim 1, characterized in that: The twisted pair cable (2) comprises two thin silver-plated copper wires (21), two PE insulation layers (23), a drain wire (22) and an aluminum foil shielding layer (24), wherein the two thin silver-plated copper wires (21) are respectively inserted into two PE insulation layers (23) of the same color, and the aluminum foil shielding layer (24) is coated on the outside of the two thin silver-plated copper wires (21), the two PE insulation layers (23) and the drain wire (22).

6. A special cable for underwater audio and video transmission according to claim 5, characterized in that: The colors of the PE insulation layers (23) in the seven groups of twisted-pair cables (2) are different, namely red, yellow, brown, black, blue, green and white.

7. The special cable for underwater audio and video transmission according to claim 1, characterized in that: Waterproof glue is injected into the gaps between the 7 groups of twisted-pair cables (2) and the 2 PP ropes (3).

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