Multi-core low-noise signal cable
By using a design incorporating tin-plated round copper wire, polyethylene insulation, and graphite layers, combined with silicone oil coating, the problems of high noise and heavy weight of existing low-noise cables under vibration and impact have been solved, achieving a low-noise, lightweight, and high-performance cable design.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2026-03-10
AI Technical Summary
In the prior art, existing low-noise cables experience friction in the insulation layer under bending, vibration, and impact. The existing technology also results in higher noise levels under vibration and impact, and the overall cable has a large outer diameter and heavy weight.
Tinned round copper wire is used as the conductor, polyethylene insulation and graphite layer are used to reduce friction, combined with silicone oil coating to reduce noise level, and polyvinyl chloride sheath ensures the mechanical properties and lightweight of the cable.
It achieves a noise level of no more than 1mV under vibration and shock, has a small outer diameter and light weight, and also possesses good mechanical properties, high and low temperature resistance, and flame retardant properties.
Smart Images
Figure CN223986448U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to communication field especially relates to a multi -core low noise signal cable, it is a kind of signal cable of weak signal transmission and instrument installation and power connection etc. BACKGROUND
[0002] Low noise cable is a kind of cable specially designed, under the action of bending, vibration, impact, temperature change etc.
[0003] The low noise cable produced on the market at present is mostly extruded or wrapped with 0.2mm-0.3mm semiconductive material layer outside insulating layer, and then woven metal shielding layer is provided.The problem of such structure is that semiconductive material layer is thick, resulting in large overall outer diameter of cable, weight increase of cable, and direct weaving metal layer does not reduce the friction between medium and shielding layer. SUMMARY
[0004] In view of the deficiencies of the prior art that semiconductive material layer is thick, overall outer diameter of cable is large, weight is large, and direct weaving metal layer does not reduce the friction between medium and shielding layer, the utility model provides a multi -core low noise signal cable, which can have lower low noise value under vibration and impact, and noise value is not greater than 1mV, while ensuring that overall outer diameter of cable is small and weight is light.
[0005] The utility model discloses a multi -core low noise signal cable, which comprises an insulating single wire, a shielding single wire, a wrapping layer and an outer sheath.
[0006] Two insulating single wires and two shielding single wires are twisted to form a first layer cable core, ten insulating single wires are twisted to form a second layer cable core outside the first layer cable core, and a wrapping layer and an outer sheath are sequentially arranged outside the second layer cable core.
[0007] The utility model has the advantages that the conductor and the woven layer are made of tinned round copper wire, copper has high conductivity, can reduce interference and ensure signal transmission of the cable.
[0008] The polyethylene insulating layer has excellent dielectric strength and good electrical insulation, the graphite layer homogenizes electric field and ensures the low noise value of the cable, the thickness of the graphite layer can be 0.05mm-0.1mm, compared with the form of wrapping and extruding semiconductive layer, the overall weight of the cable is reduced, the outer diameter of the cable is reduced and the processing speed of the cable is improved.
[0009] Tinned copper wire braid has excellent shielding performance. After being coated with a silicone oil layer, it can reduce the friction between the shielding layer and the insulation layer, ensuring the cable's low noise performance (noise value not greater than 1mV).
[0010] The outer sheath is made of polyvinyl chloride, which has good mechanical and environmental performance, is resistant to high and low temperatures, has good flame retardancy, is wear-resistant and flexible.
[0011] This cable has good shielding performance, light weight, and small overall outer diameter. Under vibration and impact, the noise voltage is no more than 1mV. It also has good mechanical environmental performance, high and low temperature resistance, good flame retardancy, wear resistance, flexibility, and light weight, making it convenient to use. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of this utility model;
[0013] Figure 2 This is a schematic diagram of the structure of the insulated single wire of this utility model;
[0014] Figure 3 This is a schematic diagram of the structure of the shielded single wire of this utility model.
[0015] In the diagram: 1. Insulated single wire; 1-1. Tinned copper wire conductor I; 1-2. Polyethylene insulation layer I; 2. Shielded single wire; 2-1. Tinned copper wire conductor II; 2-2. Polyethylene insulation layer II; 2-3. Graphite layer; 2-4. Silicone oil layer; 2-5. Tinned copper wire braided layer; 3. Wrapping layer; 4. Outer sheath. Detailed Implementation
[0016] like Figure 1 As shown, a multi-core low-noise signal cable includes an insulated single wire 1, a shielded single wire 2, a wrapping layer 3, and an outer sheath 4.
[0017] Two insulated single wires 1 and two shielded single wires 2 are twisted together to form the first layer of cable core. Ten insulated single wires 1 are arranged outside the first layer of cable core and twisted together to form the second layer of cable core. A wrapping layer 3 is wrapped around the second layer of cable core, and an outer sheath 4 is extruded outside the wrapping layer 3.
[0018] like Figure 2 As shown, the insulated single wire 1 is composed of a tinned copper wire conductor I1-1 with a polyethylene insulation layer I1-2 extruded outside.
[0019] like Figure 3 As shown, the shielded single wire 2 is composed of a polyethylene insulation layer II2-2 extruded from the tinned copper wire conductor II2-1, a graphite layer 2-3 coated with a layer of silicone oil coated with a layer of silicone oil, and a tinned copper wire braided layer 2-5 braided with a layer of tinned copper wire.
[0020] The wrapping layer 3 is a polyester film, and the outer sheath 4 is polyvinyl chloride.
Claims
1. A multi-fiber low noise signal cable, characterized by: It includes insulated single wire (1), shielding single wire (2), wrapping layer (3), outer sheath (4); two insulated single wires (1) and two shielding single wires (2) are twisted to form a first layer cable core, the first layer cable core is externally provided with ten insulated single wires (1) twisted to form a second layer cable core, the second layer cable core is externally provided with wrapping layer (3) and outer sheath (4) in sequence; The shielding single wire (2) is composed of tinned copper wire conductor II (2-1) externally provided with polyethylene insulation layer II (2-2), graphite layer (2-3), silicon oil layer (2-4) and tinned copper wire braid layer (2-5) in sequence.
2. A multi-conductor low noise signal cable according to claim 1, characterized in that: The insulated single wire (1) is composed of tinned copper wire conductor I (1-1) externally provided with polyethylene insulation layer I (1-2).
3. A multi-conductor low noise signal cable according to claim 1, characterized in that: The wrapping layer (3) is a polyester film.
4. A multi-conductor low noise signal cable according to claim 1, characterized in that: The outer sheath (4) is a polyvinyl chloride sheath.