CN201556461U - Communication and electrical control integrated signal cable - Google Patents

Abstract

The utility model relates to a comprehensive signal cable for communication and electrical control, which comprises a coaxial transmission line, a shielding wire group and a sheath. The beneficial effects of the utility model are: 1. The attenuation of the coaxial transmission line is small: the physical foamed polyethylene can greatly reduce the dielectric constant of the material, so that the signal attenuation is small during transmission. 2. Light weight: the structural size is greatly reduced to reduce the weight of the product. 3. High integration: the combination of multiple units is adopted to make the overall structure compact and highly integrated. 4. Good shielding performance: Oxygen-free copper wire is used for multi-strand braiding, with high coverage density, strong anti-interference ability and good shielding effect. 5. Good flexibility: The three-core shielding group adopts multi-strand fine-twisted oxygen-free copper, which has good flexibility. The outer sheath is made of soft PVC to increase the overall softness, and is suitable for small-radius bending connection. 6. Stability: The outer sheath is tightly extruded, so that the electrical performance of the product is stable, and the structure is round and stable.

Description

Communication and electrical control integrated signal cable

technical field

The utility model relates to a cable, in particular to a communication and electrical control composite signal cable used for composite signal transmission in a modern office.

Background technique

With the rapid development of the national economy, there are more and more requirements for integrated wiring for the simultaneous transmission of communication and electrical signals. Higher and higher requirements are put forward for the cables used, and the cables are miniaturized, integrated, light in weight and good in shielding. , high-level transmission indicators and other directions of development. General communication coaxial transmission lines use solid polyethylene as the insulating material, the cable size is relatively large, the frequency range is narrow, the signal attenuation index is unstable, and the mutual electromagnetic interference is large when arranged with the electrical signal transmission line, which cannot meet the communication requirements of modern offices.

Contents of the invention

In view of the deficiencies in the existing technology, the utility model provides a communication and electrical control integrated signal that needs to be connected with electrical signals at the same time as multi-channel high-frequency signal transmission, and closely spaced to each other without interference from the other party and the outside world. cable.

In order to achieve the above purpose, the utility model adopts a technical scheme as follows: a communication and electrical control integrated signal cable, which is characterized in that it includes a coaxial transmission line, a shielded wire group, a sheath, two coaxial transmission lines, a shielded The wire groups are twisted into bundles, and then extruded with a layer of sheath.

The beneficial effects of the utility model are: 1. The attenuation of the coaxial transmission line is small: physical foamed polyethylene is used as the insulation layer material, and this kind of air can greatly reduce the dielectric constant of the material, so that the attenuation of the signal is small during transmission. 2. Light weight: The coaxial sheath is wrapped with polyester film, which greatly reduces the structural size and thus reduces the weight of the product. 3. High integration: the combination of multiple units is adopted to make the overall structure compact and highly integrated. 4. Good shielding performance: Oxygen-free copper wire is used for multi-strand braiding, with high coverage density, strong anti-interference ability and good shielding effect. 5. Good flexibility: The three-core shielding group adopts multi-strand fine-twisted oxygen-free copper, which has good flexibility. The outer sheath is made of soft PVC to increase the overall softness, and is suitable for small-radius bending connection. 6. Stability: The outer sheath is tightly extruded, so that the electrical performance of the product is stable, and the structure is round and stable.

Description of drawings

Fig. 1 is a schematic structural view of the utility model and is used as a summary accompanying drawing.

Detailed ways

As shown in Figure 1, the communication and electrical control integrated signal cable includes a coaxial transmission line 1, a shielded wire group 2, and a sheath 3. The shielded wire group 2 is twisted into a bundle, and a layer of sheath 3 is extruded outside it. The coaxial transmission line 1 includes a layer of foam insulation layer 1-2 extruded sequentially outside the inner conductor 1-1, braided layer of annealed oxygen-free copper wire as the outer conductor 1-3, and wrapped with a layer of polyester film 1-4. Sheath 3 is soft pvc material. The shielded wire group 2 includes a control wire core 2-1, a polyester film 2-3 and an outer conductor 2-4, and the control wire core 2-1 is wrapped with a PVC insulating layer 2-1 by an inner conductor 2-1-1 1-2, three control wire cores 2-1 are wrapped with a layer of polyester film 2-3 and a layer of outer conductor 2-4 is braided. The gun insulation layer 1-2 is a physically foamed polyethylene material. Outer conductors 1-3 are braided layers of annealed oxygen-free copper wires. Outer conductors 2-4 are braided layers of annealed oxygen-free copper wires.

The utility model can be manufactured through the following process: extrude and pack the foamed insulating layer 1-2 with a cable extruding foaming device outside the solid coaxial inner conductor 1-1, and weave a foamed insulating layer 1-2 with a braiding machine The outer conductor 1-3 is layered, and the outer conductor 1-3 is wrapped with a polyester film 1-4 by a wrapping device to form a coaxial transmission line 1. Use a wire and cable stranding machine or a beam machine to twist multiple strands of oxygen-free copper wires to make the inner conductor 2-1-1, and use cable extrusion equipment to extrude a layer of PVC insulating layer outside the strands of inner conductor 2-1-1 2-1-2 constitutes the control wire core 2-1, the three control wire cores 2-1 are twisted together with the twisted cable equipment in order of color, and the polyester film 2-3 is wrapped with the wrapping equipment at the same time, and the braided wire The equipment braids a layer of annealed oxygen-free copper wire outer conductor 2-4 outside the polyester film 2-3 to form a shielded wire group 2, and twists two coaxial transmission lines 1 and one shielded wire group 2 together with a cable forming machine , and then extrude PVC soft elastomer as the sheath 3 with extrusion equipment.

Claims (7)

1. A communication and electrical control integrated signal cable, characterized in that: comprise coaxial transmission line (1), shielded wire group (2), sheath (3), two described coaxial transmission lines (1), shielded wire The group (2) is twisted into bundles, and then the sheath (3) is extruded. 2. The communication and electrical control integrated signal cable according to claim 1, characterized in that: the coaxial transmission line (1) includes a foam insulation layer (1-2) which is sequentially extruded outside the inner conductor (1-1) ), braided outer conductor (1-3), wrapped polyester film (1-4). 3. The communication and electrical control integrated signal cable according to claim 1, characterized in that: the shielded wire group (2) includes a control wire core (2-1), a polyester film (2-3) outer conductor ( 2-4), the control wire core (2-1) is formed by extruding a layer of PVC insulation layer (2-1-2) outside the inner conductor (2-1-1), and the three control wire cores (2-1 ) is wrapped with polyester film (2-3) and braided outer conductor (2-4) in turn. 4. The communication and electrical control integrated signal cable according to claim 1, characterized in that: the sheath (3) is made of soft PVC material. 5. The communication and electrical control integrated signal cable according to claim 2, characterized in that: the foamed insulating layer (1-2) is physically foamed polyethylene material. 6. The communication and electrical control integrated signal cable according to claim 2, characterized in that: the outer conductor (1-3) is an annealed oxygen-free copper wire braid. 7. The communication and electrical control integrated signal cable according to claim 3, characterized in that: the outer conductor (2-4) is an annealed oxygen-free copper wire braid.

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