A high-strength twisted pair cable

Abstract

This utility model proposes a high-strength twisted-pair cable, relating to the field of cable assembly technology, comprising a conductor, an insulating sleeve, a heat insulation layer, a high-temperature resistant layer, a braided sleeve, and an outer sheath. The insulating sleeve covers the outside of the conductor, and the outer wall of the insulating sleeve is integrally formed with mutually fitting grooves and strips. A set of grooves and strips of the insulating sleeve are twisted together under the plasticity of the conductor to form a twisted-pair structure. The heat insulation layer covers the outside of the twisted-pair structure formed by the insulating sleeve, the high-temperature resistant layer covers the outside of the heat insulation layer, the braided sleeve covers the outside of the high-temperature resistant layer, and the outer sheath covers the outside of the braided sleeve. This application can solve the problem of insufficient strength in traditional twisted-pair cables, which leads to the strands unraveling.

Description

Technical Field

[0001] This utility model belongs to the field of cable device technology, specifically relating to a high-strength twisted pair cable. Background Technology

[0002] Twisted-pair cables are generally made of two insulated copper wires of gauge 22-26 twisted together, hence the name "twisted-pair cable." Placing one or more pairs of twisted wires in an insulating sleeve creates a twisted-pair cable, which is commonly referred to simply as "twisted-pair cable" in everyday life. The twisting of the wires causes the interfering currents on the two conductors to be out of phase, thus canceling out electromagnetic interference.

[0003] However, in certain special application scenarios, existing twisted-pair cables suffer from insufficient strength, leading to strand unraveling. For example, in cable chains, the cable needs to withstand repeated bending and stretching, making the strands prone to unraveling. When installed vertically, the cable's own weight causes stretching, especially over long distances. If the sheath or conductor material is not strong enough, the structure will become loose. Once the twisted-pair pitch unravels, the cancellation effect decreases, leading to increased crosstalk. The loose structure also results in uneven distributed capacitance and increased attenuation of high-frequency signals. Therefore, this application proposes a high-strength twisted-pair cable. Utility Model Content

[0004] In order to overcome the problems in the background technology, this utility model provides a high-strength twisted pair cable, which solves the problem that the twisted wires are unraveling due to insufficient strength in traditional twisted pair cables.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: A high-strength twisted-pair cable includes a conductor, an insulating sheath, a heat insulation layer, a high-temperature resistant layer, a braided sheath, and an outer sheath. The insulating sheath covers the outside of the conductor, and the outer wall of the insulating sheath has interlocking grooves and strips. A set of grooves and strips of the insulating sheath are twisted together under the plasticity of the conductor to form a twisted-pair structure. The heat insulation layer covers the outside of the twisted-pair structure formed by the insulating sheath, the high-temperature resistant layer covers the outside of the heat insulation layer, the braided sheath covers the outside of the high-temperature resistant layer, and the outer sheath covers the outside of the braided sheath.

[0006] Furthermore, the insulating sleeve has a D-shaped structure with a combination of a semicircle and a rectangle of equal width. The conductor cavity of the insulating sleeve is coaxial with the center of the circle, and the groove and strip are formed on the straight edge surface of the insulating sleeve.

[0007] Furthermore, a set of supporting ribs are symmetrically arranged inside the insulating sleeve to fill the twisted cavity between the insulating sleeves.

[0008] Furthermore, the insulating sleeve is made of silicone rubber.

[0009] Furthermore, the heat insulation layer is a heat insulation layer made of ceramic silicone composite layer.

[0010] Furthermore, the high-temperature resistant layer is a high-temperature resistant layer formed by wrapping synthetic mica tape.

[0011] Furthermore, the woven sleeve is a woven sleeve made of aramid fiber.

[0012] Furthermore, the outer sheath is an irradiated cross-linked low-smoke halogen-free outer sheath.

[0013] The beneficial effects of this utility model are: The outer wall of the insulating sleeve of this application has integrally formed grooves and strips that fit together. The grooves and strips of a set of insulating sleeves are twisted together under the plasticity of the conductor to form a twisted structure. At the same time, the supporting ribs fill the twisted cavity between the insulating sleeves, which solves the problem of insufficient strength of traditional twisted wires causing the twisted wires to unravel. Attached Figure Description

[0014] To clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments are explained.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention; Figure 3 This is a schematic diagram of the insulating sleeve structure of this utility model.

[0016] 1-Conductor, 2-Insulating sleeve, 21-Cut groove, 22-Cut strip, 3-Insulation layer, 4-High temperature resistant layer, 5-Braided sleeve, 6-Outer sheath, 7-Supporting rib. Detailed Implementation

[0017] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate the understanding of those skilled in the art.

[0018] This utility model discloses a high-strength twisted-pair cable, see reference. Figure 1-3 A high-strength twisted-pair cable includes a conductor 1, an insulating sleeve 2, a heat insulation layer 3, a high-temperature resistant layer 4, a braided sleeve 5, and an outer sheath 6. The insulating sleeve 2 covers the outside of the conductor 1. The outer wall of the insulating sleeve 2 has interlocking grooves 21 and strips 22 integrally formed. A set of grooves 21 and strips 22 of the insulating sleeve 2 are twisted together under the plasticity of the conductor 1 to form a twisted structure. Compared with the twisted structure of traditional twisted-pair cables, the twisting structure is more tightly fitted and less prone to loosening. The heat insulation layer 3 covers the outside of the twisted structure formed by the insulating sleeve 2. The high-temperature resistant layer 4 covers the outside of the heat insulation layer 3 to improve the high-temperature resistance. The braided sleeve 5 covers the outside of the high-temperature resistant layer 4 to improve the tensile strength. The outer sheath 6 covers the outside of the braided sleeve 5 to improve the protective performance.

[0019] See Figure 1-3 The insulating sleeve 2 has a D-shaped structure with a combination of a semicircle and a rectangle of equal width. The conductor 1 of the insulating sleeve 2 is coaxial with the center of the circle. The groove 21 and the strip 22 are opened on the straight edge of the insulating sleeve 2 to facilitate splicing and connection during winding.

[0020] See Figure 1-3 The insulating sleeve 2 is symmetrically provided with a set of supporting ribs 7 to fill the twisted cavity between the insulating sleeves 2, so as to prevent the insulating sleeve 2 from opening up due to long-term bending and stretching.

[0021] See Figure 1-3 The insulating sleeve 2 is made of silicone rubber, which is resistant to high temperature and corrosion.

[0022] See Figure 1-3 The heat insulation layer 3 is a ceramic-silicone composite layer with good heat insulation properties.

[0023] See Figure 1-3 The high-temperature resistant layer 4 is formed by wrapping synthetic mica tape, and has a high heat resistance level.

[0024] See Figure 1-3 The woven sleeve 5 is made of aramid fiber and has good tensile strength.

[0025] See Figure 1-3 The outer sheath 6 is an irradiated cross-linked low-smoke halogen-free outer sheath 6, which meets the requirements of environmental protection and low smoke, and is also oil-resistant and crack-resistant.

[0026] Work process: The insulation sleeve 2 is tightly connected by twisting the groove 21 and the strip 22 together. The cavity formed between the twisted structure of the insulation sleeve 2 and the heat insulation layer 3 is filled by the support rib 7 that is twisted with the twisted knot, which not only increases the support and prevents loosening, but also improves the overall strength. The heat insulation layer 3 and the high temperature resistant layer 4 can improve the fire resistance, the braided sleeve 5 can improve the tensile strength, and the outer sheath 6 provides overall weather protection for the cable.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-strength twisted-pair cable, characterized in that: The device includes a conductor (1), an insulating sleeve (2), a heat insulation layer (3), a high-temperature resistant layer (4), a braided sleeve (5), and an outer sheath (6). The insulating sleeve (2) covers the outside of the conductor (1). The outer wall of the insulating sleeve (2) has interlocking grooves (21) and strips (22). The grooves (21) and strips (22) of a set of insulating sleeves (2) are twisted together under the plasticity of the conductor (1) to form a double-twisted structure. The heat insulation layer (3) covers the outside of the double-twisted structure formed by the insulating sleeve (2). The high-temperature resistant layer (4) covers the outside of the heat insulation layer (3). The braided sleeve (5) covers the outside of the high-temperature resistant layer (4). The outer sheath (6) covers the outside of the braided sleeve (5).

2. The high-strength twisted pair cable according to claim 1, characterized in that: The insulating sleeve (2) has a D-shaped structure with a combination of a semicircle and a rectangle of equal width. The conductor (1) cavity of the insulating sleeve (2) is coaxial with the center of the circle. The groove (21) and the strip (22) are opened on the straight edge surface of the insulating sleeve (2).

3. The high-strength twisted pair cable according to claim 1, characterized in that: A set of support ribs (7) are symmetrically arranged inside the insulating sleeve (2) to fill the twisted cavity between the insulating sleeves (2).

4. The high-strength twisted pair cable according to claim 1, characterized in that: The insulating sleeve (2) is made of silicone rubber.

5. The high-strength twisted pair cable according to claim 1, characterized in that: The heat insulation layer (3) is a heat insulation layer (3) made of ceramic silicone composite layer.

6. The high-strength twisted pair cable according to claim 1, characterized in that: The high-temperature resistant layer (4) is a high-temperature resistant layer (4) formed by wrapping synthetic mica tape.

7. The high-strength twisted pair cable according to claim 1, characterized in that: The woven sleeve (5) is a woven sleeve (5) made of aramid fiber.

8. The high-strength twisted pair cable according to claim 1, characterized in that: The outer sheath (6) is an irradiated cross-linked low-smoke halogen-free outer sheath (6).

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