A multi-core cable

Abstract

The utility model relates to a cable, in particular to a multi-core cable, including a conductor, an insulating sleeve and a sheath, wherein the insulating sleeve is arranged outside the conductor, the number of conductors is three, the sheath is arranged outside the insulating sleeve, and further includes a partition, a filler and a braided belt, wherein a partition is arranged between each conductor, a filler is filled between the insulating sleeve and the sheath, and a braided belt is arranged at the contact between the sheath and the filler. The insulating sleeves are filled with fillers to improve the stability between each insulating sleeve, and the copper braided belt is configured to improve the flexibility of the cable, effectively improve the impact resistance of the cable, and the copper braided belt can effectively prevent moisture and oxidation, and can still protect the inside of the cable when the sheath is damaged, thereby improving its service life.

Description

Technical Field

[0001] The utility model relates to a cable, in particular to a multi-core cable. Background Art

[0002] A multi-core cable is a cable product that integrates multiple conductor cores. It is usually composed of multiple independent copper cores (or cores made of other conductive materials), each of which is responsible for transmitting different signals or currents. These cores are usually wrapped with insulating materials to prevent current leakage or signal interference and ensure electrical isolation between the cores.

[0003] In existing multi-core cable designs, each copper core is surrounded by a carefully designed insulation layer. The main function of the insulation layer is to provide electrical isolation while protecting the copper core from damage such as corrosion, abrasion, and short circuits. However, although the insulation layer performs well in terms of electrical performance, it is relatively weak in terms of physical protection. When we turn our attention to the outer layer of the multi-core cable, we will find that there is usually only one sheath to provide external protection. This sheath is usually made of wear-resistant and corrosion-resistant materials, but its main purpose is to provide basic mechanical protection and prevent erosion from environmental factors (such as moisture, dust, etc.). However, when faced with more severe physical impact or extrusion, cables with only sheaths often seem to be powerless.

[0004] Specifically, when a multi-core cable is subjected to strong physical impact or extrusion, the sheath may deform or rupture, exposing the internal insulation layer and copper core. Once the insulation layer is damaged, it may not only lead to a decline in electrical performance (such as signal attenuation, current leakage, etc.), but may also cause serious consequences such as short circuits and fires. More seriously, if the copper core is directly damaged, the transmission function of the entire cable will be completely lost, causing irreparable losses.

[0005] Therefore, although existing multi-core cables perform well in electrical performance, physical protection still needs to be strengthened. Utility Model Content

[0006] In order to overcome the shortcomings of existing cables that only use sheaths for external protection, the sheaths are easily broken when subjected to external impact, resulting in the internal insulation layer and copper core being exposed to the outside, thereby causing the electrical performance to deteriorate, the utility model provides an impact-resistant multi-core cable.

[0007] The technical solution of the utility model is: a multi-core cable, including a conductor, an insulating sleeve and a sheath, the insulating sleeve is arranged outside the conductor, the number of conductors is three, the sheath is arranged outside the insulating sleeve, and also includes a partition, a filler and a braided belt. A partition is arranged between each conductor, the filler is filled between the insulating sleeve and the sheath, and a braided belt is arranged at the contact between the sheath and the filler.

[0008] A more excellent solution is that both the insulating sleeve and the sheath are ductile.

[0009] A more excellent solution is that both the insulating sleeve and the sheath are made of fire-resistant material.

[0010] A more preferred solution is that the braided belt is made of a copper material with a cross-woven structure.

[0011] A more excellent solution is to provide a polyester belt on the outside of the filling to fully wrap it.

[0012] A more excellent solution is that the sheath fits tightly to the polyester belt.

[0013] A more excellent solution is that the partition equally divides the space inside the polyester belt tube, and the insulating sleeve is arranged in the corresponding divided space.

[0014] A better solution is to use different colors to distinguish the insulating sleeves.

[0015] Beneficial effects: The insulation sleeves are filled with fillers to improve the stability of each insulation sleeve. The copper braided belt can improve the flexibility of the cable and effectively improve the impact resistance of the cable. The copper braided belt can effectively prevent moisture and oxidation, and can still protect the inside of the cable when the sheath is damaged, thereby increasing its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the sheath, conductor and braided belt of the utility model.

[0018] Figure 3 It is a three-dimensional structural schematic diagram of the filler, partition and insulating sleeve of the utility model.

[0019] Markings in the figure are: 1-sheath, 2-braided tape, 3-polyester tape, 4-conductor, 5-insulating sleeve, 6-partition, 7-filler. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods, but the protection scope and application scope of the present invention are not limited.

[0021] Embodiment: A multi-core cable, such as Figure 1-Figure 3 As shown, three solid bare copper conductors 4 are tightly wrapped by insulating sleeves 5 of three colors: blue, brown, and black. The specification of the single conductor 4 is 0.19mm (±0.005mm)*16, and the structure of the three conductors 4 is 0.5mm 2*3, the average wall thickness of the insulating sleeve 5 is 0.5mm, the outer sleeve of the insulating sleeve 5 is provided with a polyester tape 3, and a filler 7 is filled between the insulating sleeve 5 and the polyester tape 3. In this embodiment, the filler 7 is made of polyethylene material, and the polyethylene filler 7 has good flexibility, corrosion resistance and pressure resistance. After the filler 7 fully wraps the insulating sleeve 5, it can improve its stability, thereby protecting the conductor 4. The polyethylene filler 7 is limited by the polyester tape 3, and a partition 6 is provided therebetween to separate the insulating sleeves 5 and reduce the friction between the insulating sleeves 5. The outer sleeve of the polyester tape 3 is provided with a sheath 1 and a braided tape 2 is provided therebetween. The insulating sleeve 5 and the sheath 1 are both made of refractory materials and have ductility. The braided tape 2 is a copper braided tape 2, and the braided tape 2 is a cross-braided structure and the coverage rate is greater than 60% (the density and wire diameter can be adjusted according to actual conditions to adapt to the corresponding working environment). The use of the copper braided tape 2 can provide excellent flexibility and further improve the impact resistance of the cable. The surface of the copper braided tape 2 is chemically plated, which can effectively prevent moisture and oxidation and improve the static life of the cable.

[0022] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A multi-core cable, comprising a conductor (4), an insulating sleeve (5) and a sheath (1), wherein the insulating sleeve (5) is sleeved outside the conductor (4), the number of the conductors (4) is at least two, and the sheath (1) is sleeved outside the insulating sleeve (5), characterized in that: It also includes a partition (6), a filler (7) and a braided belt (2), wherein the partition (6) is arranged between each conductor (4), the filler (7) is filled between the insulating sleeve (5) and the sheath (1), and the braided belt (2) is sleeved at the contact point between the sheath (1) and the filler (7).

2. A multi-core cable according to claim 1, characterized in that: Both the insulating sleeve (5) and the protective sleeve (1) are ductile.

3. A multi-core cable according to claim 2, characterized in that: The insulating sleeve (5) and the protective sleeve (1) are both made of refractory materials.

4. A multi-core cable according to claim 3, characterized in that: The braided belt (2) is made of a copper material with a cross-braided structure.

5. A multi-core cable according to claim 4, characterized in that: A polyester belt (3) is arranged outside the filler (7) to fully wrap it.

6. A multi-core cable according to claim 5, characterized in that: The sheath (1) and the polyester belt (3) are tightly fitted.

7. A multi-core cable according to claim 6, characterized in that: The partition (6) equally divides the space inside the tube of the polyester belt (3), and the insulating sleeve (5) is arranged in the corresponding divided space.

8. A multi-core cable according to claim 7, characterized in that: The insulating sleeves (5) are distinguished by different colors.

Images