CN214279632U

CN214279632U - Dual-insulation flame-retardant wire

Info

Publication number: CN214279632U
Application number: CN202023134881.6U
Authority: CN
Inventors: 冯鸿枢; 贺新祥
Original assignee: Xiamen Oulaida Electronic Technology Co ltd
Current assignee: Xiamen Oulaida Electronic Technology Co ltd
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-09-24
Anticipated expiration: 2030-12-23

Abstract

The utility model discloses a fire-retardant electric wire with dual insulation belongs to electrician's electric wire technical field, including the electric wire body, electric wire body outside-in includes restrictive coating, waterproof layer, first insulation layer, shielding layer and core group in proper order, the waterproof layer with it is equipped with a plurality of parting beads to encircle between the first insulation layer, thereby makes the waterproof layer with form the clearance isolation layer between the first insulation layer, core group is including locating the plastic pipe at sinle silk center, locating plastic pipe periphery side equidistant distribution's plastic parting bead and locating inner core between the plastic parting bead, the intussuseption of sinle silk group is filled with silicon rubber, the utility model has the advantages of dual insulation, anti flame retardant.

Description

Dual-insulation flame-retardant wire

Technical Field

The utility model relates to an electrician's electric wire technical field specifically is a fire-retardant electric wire of dual insulation has.

Background

The electric wire is a product with few cores, small product diameter and simple structure and is used as a material for electric power, communication and related transmission purposes, the electric wire consists of one or more soft conducting wires, and a light and soft protective layer is wrapped outside the electric wire; the cable is composed of one or several insulated wires, and the outside is covered by a tough outer layer made of metal or rubber, and the cable and the wire are generally composed of three components of a core wire, an insulated sheath and a protective sheath.

Therefore, the person skilled in the relevant art improves this, for example, chinese patent No. CN211742727U proposes "a double-insulated high flame-retardant electric wire", which includes twisted copper wire, waterproof layer, and shielding layer, although the utility model discloses a shielding layer with multilayer structure, interference-proof performance is strong, multilayer structure's tensile rupture-proof characteristics.

However, the technical scheme in the application document still has the defects of poor insulation and poor fire resistance of the electric wire.

Based on this, the utility model designs a have fire-retardant electric wire of dual insulation to solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a have fire-retardant electric wire of dual insulation to solve above-mentioned technical problem.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a fire-retardant electric wire with dual insulation, includes the electric wire body, electric wire body outside-in includes restrictive coating, waterproof layer, first insulation layer, shielding layer and core group in proper order, the waterproof layer with it is equipped with a plurality of parting bead to encircle between the first insulation layer, thereby makes the waterproof layer with form the clearance isolation layer between the first insulation layer, core group is including locating the plastic pipe at sinle silk center, locate plastic pipe periphery side equidistant distribution's plastic parting bead and locating inner core between the plastic parting bead, the intussuseption of core group is filled with silicon rubber.

Preferably, a circle of second insulating layer is arranged on the periphery of the inner core, and the inner core is made of a plurality of stranded copper wires.

Preferably, the first insulating layer is made of polyethylene.

Preferably, the plastic tube is internally and alternately filled with a first nylon tensile rope and a second nylon tensile rope, and the diameter of the first nylon tensile rope is larger than that of the second nylon tensile rope.

Preferably, the partition strip forms symmetrically distributed inclined planes along both sides of the width direction of the partition strip, and the side with the smaller distance between the two inclined planes faces the waterproof layer.

Compared with the prior art, the beneficial effects of the utility model are that: the method comprises the steps that a first insulating layer and a gap isolating layer are arranged, when the wire core group leaks electricity, the first insulating layer can isolate leakage current into the first insulating layer, when the first insulating layer cannot effectively block the leakage current, the residual leakage current is blocked through the gap isolating layer, and double insulation can be formed through the first insulating layer and the gap isolating layer; the silicon rubber is arranged, and has good flame retardance, so that when any one inner core burns, the silicon rubber can effectively prevent the rest inner cores from burning, and an effective flame-retardant effect is formed.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of the present embodiment;

FIG. 2 is a schematic view of a plastic tube structure according to the present embodiment;

fig. 3 is an enlarged schematic view of a point a in fig. 1 in the present embodiment.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a wire body; 2. a sheath layer; 3. a waterproof layer; 4. a first insulating layer; 5. a shielding layer; 6. a wire core group; 61. plastic pipes; 611. a first nylon tensile cord; 612. a second nylon tensile rope; 62. plastic parting strips; 63. an inner core; 631. a second insulating layer; 632. stranding copper wires; 7. a dividing strip; 71. an inclined surface; 8. a gap isolation layer; 9. and (3) silicon rubber.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a fire-retardant electric wire with dual insulation, includes electric wire body 1, its characterized in that: wire body 1 outside-in includes restrictive coating 2 in proper order, waterproof layer 3, first insulation layer 4, shielding layer and core group 6, it is equipped with a plurality of parting beads 7 to encircle between waterproof layer 3 and the first insulation layer 4, thereby make and form clearance isolation layer 8 between waterproof layer 3 and the first insulation layer 4, core group 6 is including locating the plastic pipe 61 at core center, locate plastic pipe 61 periphery side equidistant distribution's plastic parting bead 62 and locate the inner core 63 between the plastic parting bead 62, the intussuseption of core group 6 is filled with silicon rubber 9, and is concrete, plastic parting bead 62, plastic pipe 61 separates into four independent spaces with core group 6 effectively, silicon rubber 9 is fixed in the intermediate position in independent space with inner core 63.

Preferably, the inner core 63 has a ring of the second insulating layer 631 at the outer circumference thereof, and the inner core 63 is made of a plurality of twisted copper wires 632.

Preferably, the first insulating layer 4 is made of polyethylene, which has good insulating properties at low temperatures.

Preferably, the plastic tube 61 is filled with the first nylon tensile cord 611 and the second nylon tensile cord 612 at intervals, the diameter of the first nylon tensile cord 611 is larger than that of the second nylon tensile cord 612, specifically, the first nylon tensile cord 611 and the second nylon tensile cord 612 are alternately arranged at intervals, and the wire body 1 is easy to bend.

Preferably, the partition strip 7 has inclined surfaces 71 symmetrically distributed along both sides in the width direction, and the side of the partition strip where the distance between the inclined surfaces 71 is smaller faces the waterproof layer 3.

One specific application of this embodiment is: when the second insulating layer 631 of any one of the inner cores 63 is damaged, the current in the twisted copper wire 632 partially runs onto the silicon rubber 9 to form leakage current, the leakage current passes through the shielding layer and then is effectively isolated by the first insulating layer 4, and when the first insulating layer 4 cannot effectively isolate the leakage current, the gap isolating layer 8 can isolate the leakage current, so that the leakage current is prevented from penetrating out of the sheath layer 2; when any one of the cores 63 is burnt, the silicone rubber 9 has good flame retardancy, and the remaining cores 63 can be prevented from being burnt.

In summary, the first insulating layer 4 and the gap isolating layer 8 are provided, the first insulating layer 4 can isolate the leakage current into the first insulating layer 4 when the wire core group 6 leaks, when the first insulating layer 4 cannot effectively block the leakage current, the residual leakage current is blocked by the gap isolating layer 8, and double insulation can be formed by the first insulating layer 4 and the gap isolating layer 8; the silicon rubber 9 is arranged, and because the silicon rubber 9 has good flame retardance, when any one inner core 63 burns, the silicon rubber 9 can effectively prevent the rest inner cores 63 from burning, and an effective flame-retardant effect is formed.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A flame-retardant electric wire with double insulation comprises an electric wire body (1), and is characterized in that: wire body (1) outside-in includes restrictive coating (2), waterproof layer (3), first insulation layer (4), shielding layer and core pack (6) in proper order, waterproof layer (3) with it is equipped with a plurality of parting bead (7) to encircle between first insulation layer (4), thereby makes waterproof layer (3) with form clearance isolation layer (8) between first insulation layer (4), core pack (6) is including locating plastic pipe (61) at core center, locating plastic pipe (61) periphery side equidistant distribution's plastic parting bead (62) and locating inner core (63) between plastic parting bead (62), core pack (6) intussuseption is filled with silicon rubber (9).

2. The flame-retardant electric wire with double insulation according to claim 1, wherein: the periphery of inner core (63) is equipped with round second insulating layer (631), inner core (63) are made by a plurality of transposition copper line (632).

3. The flame-retardant electric wire with double insulation according to claim 1, wherein: the first insulating layer (4) is made of polyethylene.

4. The flame-retardant electric wire with double insulation according to claim 1, wherein: the plastic pipe (61) is filled with a first nylon tensile rope (611) and a second nylon tensile rope (612) at intervals, and the diameter of the first nylon tensile rope (611) is larger than that of the second nylon tensile rope (612).

5. The flame-retardant electric wire with double insulation according to claim 1, wherein: inclined surfaces (71) which are symmetrically distributed are formed on two sides of the separating strip (7) along the width direction, and one side, with a smaller distance, of the two inclined surfaces (71) faces the waterproof layer (3).