Electromagnetic shielding flame-retardant polyvinyl chloride insulated cable

Abstract

The utility model discloses an electromagnetic shielding flame-retardant polyvinyl chloride insulated cable, which comprises an insulating layer, a wire core, a wire core coating film, a filler, a protective layer and a shielding flame-retardant sleeve, the wire core is connected inside the insulating layer, the wire core coating film is connected at the side end of the wire core, the filler is filled between the wire core and the insulating layer, the protective layer is sleeved at the side end of the insulating layer, and the shielding flame-retardant sleeve is sleeved at the side end of the shielding flame-retardant sleeve. And the shielding flame-retardant sleeve is sleeved at the side end of the protective layer. The cable provided by the utility model solves the problem that the metal braid layer affects the flexibility of the cable and is not beneficial to the installation of the cable because the metal braid layer is arranged to shield the electromagnetic interference.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of cables, in particular to a kind of electromagnetic shielding flame-retardant polyvinyl chloride insulated cable. BACKGROUND

[0002] Flame retardancy and electromagnetic shielding are both very important properties for polyvinyl chloride cables. Flame retardancy provides safety assurance in case of fire, while electromagnetic shielding ensures the stable operation of the cable in complex electromagnetic environments. These two properties have a significant impact on the long-term reliability and safety of the cable. Therefore, when selecting a cable, users need to consider its flame retardancy and electromagnetic shielding according to the specific application scenario and requirements.

[0003] Typically, cables are shielded from electromagnetic interference by setting a metal braid layer, which affects the flexibility of the cable and is not conducive to its installation. SUMMARY

[0004] The utility model aims at providing a kind of electromagnetic shielding flame-retardant polyvinyl chloride insulated cable to solve the above technical problems.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: a kind of electromagnetic shielding flame-retardant polyvinyl chloride insulated cable, including insulation layer, wire core, wire core coating film, filler, protective layer, shielding flame-retardant sleeve, the wire core is connected in the insulation layer inside, the wire core coating film is connected to wire core side end, the filler is filled between wire core and insulation layer, the protective layer is sleeved in insulation layer side end, the shielding flame-retardant sleeve is sleeved in protective layer side end.

[0006] On the basis of the above technical scheme, the shielding flame-retardant sleeve includes a polyvinyl chloride layer, an embedded groove, an inner shielding braid, a flame-retardant layer, an outer embedded groove and an outer shielding braid. The inner shielding braid is wrapped around the protective layer side end through the embedded groove. The flame-retardant layer is sleeved on the polyvinyl chloride layer side end. The outer embedded groove is equally distributed on the flame-retardant layer side end. The outer shielding braid is sleeved on the flame-retardant layer through the outer embedded groove.

[0007] On the basis of the above technical scheme, the inner shielding braid overlaps with the front and rear outer shielding braids respectively to shield the inside electromagnetically.

[0008] Compared with the prior art, the utility model has the following advantages: by connecting metal braid lines on the inside and outside segments of the cable, the integrity of the metal braid layer is reduced without affecting the electromagnetic shielding effect, which reduces the impact on flexibility and facilitates the installation of the cable. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1This is a schematic diagram of the appearance structure of the utility model.

[0010] Figure 2 It is the main view of the utility model.

[0011] Figure 3 This is a cross-sectional view of the shielding flame-retardant sleeve structure of the utility model.

[0012] In the figure: 1. Insulation layer, 2. Wire core, 3. Wire core coating, 4. Filler, 5. Protective layer, 6. Shielded flame retardant sleeve, 7. PVC layer, 8. Inner embedded groove, 9. Inner shielded braided wire, 10. Flame retardant layer, 11. Outer embedded groove, 12. Outer shielded braided wire. DETAILED DESCRIPTION

[0013] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0014] like Figures 1 to 3 As shown, an electromagnetic shielding flame-retardant polyvinyl chloride insulated cable includes an insulating layer 1, a core 2, a core coating 3, a filler 4, a protective layer 5, and a shielding flame-retardant sleeve 6. The insulating layer 1 is internally connected to the core 2, the core coating 3 is connected to the side end of the core 2, the filler 4 is filled between the core 2 and the insulating layer 1, the protective layer 5 is sleeved on the side end of the insulating layer 1, and the shielding flame-retardant sleeve 6 is sleeved on the side end of the protective layer 5.

[0015] The shielding flame-retardant sleeve 6 includes a polyvinyl chloride layer 7, an inner embedded groove 8, an inner shielding braided wire 9, a flame-retardant layer 10, an outer embedded groove 11, and an outer shielding braided wire 12. The inner embedded grooves 8 are evenly distributed on the inner end of the polyvinyl chloride layer 7. The inner shielding braided wire 9 is wrapped around the side end of the protective layer 5 through the inner embedded grooves 8. The flame-retardant layer 10 is sleeved on the side end of the polyvinyl chloride layer 7. The outer embedded grooves 11 are evenly distributed on the side end of the flame-retardant layer 10. The outer shielding braided wire 12 is sleeved on the flame-retardant layer 10 through the outer embedded grooves 11.

[0016] The front and rear parts of the inner shielding braided wire 9 overlap the front and rear parts of the outer shielding braided wires 12 to perform electromagnetic shielding on the interior.

[0017] The working principle of the present invention is as follows: in daily use, the polyvinyl chloride layer 7 protects the wire core 2 in the internal insulating layer 1, and the flame retardant layer 10 cooperates with the polyvinyl chloride layer 7 to provide flame retardant protection. When there is electromagnetic interference, the front and rear parts of the inner shielding braided wire 9 overlap with the front and rear parts of the outer shielding braided wire 12 respectively to provide electromagnetic shielding to the interior. When bending is required, the non-integrated inner shielding braided wire 9 and the outer shielding braided wire 12 reduce the impact on the flexibility of the cable to facilitate bending.

[0018] The above is a preferred embodiment of the present invention. For ordinary technicians in this field, based on the teachings of the present invention, without departing from the principles and spirit of the present invention, changes, modifications, replacements and variations made to the implementation methods are still within the scope of protection of the present invention.

Claims

1. An electromagnetic shielding flame-retardant polyvinyl chloride insulated cable, comprising an insulating layer (1), a wire core (2), a wire core coating (3), a filler (4), a protective layer (5), and a shielding flame-retardant sleeve (6), characterized in that: The insulation layer (1) is internally connected to the wire core (2), the wire core coating (3) is connected to the side end of the wire core (2), the filler (4) is filled between the wire core (2) and the insulation layer (1), the protective layer (5) is sleeved on the side end of the insulation layer (1), and the shielding flame retardant sleeve (6) is sleeved on the side end of the protective layer (5).

2. The electromagnetic shielding flame-retardant polyvinyl chloride insulated cable according to claim 1, characterized in that: The shielding flame-retardant sleeve (6) comprises a polyvinyl chloride layer (7), an inner embedded groove (8), an inner shielding braided wire (9), a flame-retardant layer (10), an outer embedded groove (11), and an outer shielding braided wire (12). The inner embedded grooves (8) are evenly distributed on the inner side end of the polyvinyl chloride layer (7). The inner shielding braided wire (9) is wrapped around the side end of the protective layer (5) through the inner embedded grooves (8). The flame-retardant layer (10) is sleeved on the side end of the polyvinyl chloride layer (7). The outer embedded grooves (11) are evenly distributed on the side end of the flame-retardant layer (10). The outer shielding braided wire (12) is sleeved on the flame-retardant layer (10) through the outer embedded grooves (11).

3. The electromagnetic shielding flame-retardant polyvinyl chloride insulated cable according to claim 2, characterized in that: The front and rear parts of the inner shielding braided wire (9) overlap the front and rear parts of the outer shielding braided wire (12) to provide electromagnetic shielding to the interior.

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