High-stability RS485 field bus

Abstract

The utility model discloses a high-stability RS485 field bus, which comprises two parallel core wires, filling strips are arranged on two sides of a contact surface of the two core wires, and the two core wires and the two filling strips are wrapped by aluminum foil; a ground wire is arranged on the outer side of the aluminum foil, the aluminum foil and the ground wire are wrapped by the braid layer, and the outer side of the braid layer is wrapped by the jacket. And the jacket is an FEP (fluorinated ethylene propylene) jacket. According to the utility model, the FEP jacket is adopted as the jacket; the filling strips are PTFE filling strips; the braid layer is a metal braid layer; the core wire is composed of a conductor and an insulating layer, and the insulating layer is coated outside the conductor; the conductor adopts a silver-plated copper conductor; the insulating layer adopts an FEP insulating layer; the cable has the characteristics of flame retardance, cold resistance, heat resistance, oil resistance, solvent resistance, wear resistance, tensile strength and excellent insulating property.

Description

Technical Field

[0001] The utility model relates to the technical field of RS485 field bus, in particular to a high-stability RS485 field bus. Background Art

[0002] RS485 is a high-speed serial data transmission standard with the advantages of long communication distance, fast transmission speed, strong anti-interference ability, easy use and low cost. It is widely used in complex communication networks such as building automation, industrial control networks, and power automation.

[0003] Conventional RS485 fieldbus is not sufficient to meet the requirements of harsh and complex occasions due to material selection limitations; for this reason, we propose a high-stability RS485 fieldbus. Utility Model Content

[0004] The utility model aims to provide a high-stability RS485 field bus to solve the problems in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-stability RS485 field bus, comprising two core wires arranged in parallel, filling strips are arranged on both sides of the contact surface of the two core wires, and the two core wires and the two filling strips are coated with aluminum foil; a ground wire is arranged on the outside of the aluminum foil, the aluminum foil and the ground wire are coated by the braided layer, and the outside of the braided layer is coated with an outer sheath; the outer sheath adopts an FEP outer sheath.

[0006] Preferably, the core wire consists of a conductor and an insulating layer, and the outer side of the conductor is coated with the insulating layer.

[0007] Preferably, the conductor is a silver-plated copper conductor; and the insulation layer is a FEP insulation layer.

[0008] Preferably, the filling strip is a PTFE filling strip.

[0009] Preferably, the braided layer is a metal braided layer.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. The outer sheath is made of FEP; the filling strip is made of PTFE; the braided layer is made of metal braided layer; the core wire is composed of conductor and insulation layer, and the outer side of the conductor is covered with insulation layer; the conductor is made of silver-plated copper conductor; the insulation layer is made of FEP insulation layer; it has the characteristics of flame retardancy, cold resistance, heat resistance, oil resistance, solvent resistance, wear resistance, tensile strength and excellent insulation performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] In the figure: 1. Ground wire; 2. Conductor; 3. Insulation layer; 4. Filling strip; 5. Aluminum foil; 6. Braided layer; 7. Outer cover. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is claimed, but merely represents selected embodiments of the utility model.

[0016] See also Figure 1 In an embodiment of the utility model, a high-stability RS485 field bus comprises two parallel core wires, filling strips 4 are arranged on both sides of the contact surface of the two core wires, and the two core wires and the two filling strips 4 are coated with aluminum foil 5; a ground wire 1 is arranged on the outside of the aluminum foil 5, the braided layer 6 coats the aluminum foil 5 and the ground wire 1, and the outside of the braided layer 6 is coated with an outer sheath 7; the outer sheath 7 adopts an FEP outer sheath; the filling strip 4 adopts a PTFE filling strip; the braided layer 6 adopts a metal braided layer.

[0017] The core wire is composed of a conductor 2 and an insulating layer 3, and the outer side of the conductor 2 is coated with the insulating layer 3; the conductor 2 is a silver-plated copper conductor; the insulating layer 3 is an FEP insulating layer; it has the characteristics of flame retardancy, cold resistance, heat resistance, oil resistance, solvent resistance, wear resistance, tensile strength and excellent insulation performance; it can meet the use of a variety of harsh and complex occasions at the same time.

[0018] The working principle of the utility model is: the outer sheath adopts FEP outer sheath; the filling strip adopts PTFE filling strip; the braided layer adopts metal braided layer; the core wire is composed of a conductor and an insulating layer, and the outer side of the conductor is coated with an insulating layer; the conductor adopts a silver-plated copper conductor; the insulating layer adopts an FEP insulating layer; it has the characteristics of flame retardancy, cold resistance, heat resistance, oil resistance, solvent resistance, wear resistance, tensile strength and excellent insulation performance; it can meet the use of a variety of harsh and complex occasions at the same time.

[0019] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A high stability RS485 field bus, characterized by: The invention comprises a braided layer (6) and two parallel core wires, wherein filling strips (4) are arranged on both sides of the contact surface of the two core wires, and the two core wires and the two filling strips (4) are covered by aluminum foil (5); a ground wire (1) is arranged on the outside of the aluminum foil (5), the braided layer (6) covers the aluminum foil (5) and the ground wire (1), and the outside of the braided layer (6) is covered with an outer sheath (7); the outer sheath (7) is made of FEP outer sheath.

2. A high stability RS485 field bus according to claim 1, characterized in that: The core wire is composed of a conductor (2) and an insulating layer (3), and the outer side of the conductor (2) is covered with the insulating layer (3).

3. A high stability RS485 field bus according to claim 2, characterized in that: The conductor (2) is a silver-plated copper conductor; and the insulating layer (3) is a FEP insulating layer.

4. A high stability RS485 field bus according to claim 1, characterized in that: The filling strip (4) is a PTFE filling strip.

5. A high stability RS485 field bus according to claim 1, characterized in that: The braided layer (6) is a metal braided layer.

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