Halogen-free flame-retardant wire

Abstract

The utility model discloses a halogen-free flame-retardant wire, which comprises a wire core, a wrapping layer, a flame-retardant layer and a buffer assembly, the wrapping layer is arranged outside the wire core, the flame-retardant layer is arranged outside the wrapping layer, the flame-retardant layer is used for flame retardance of the wire, the buffer assembly is arranged between the wrapping layer and the flame-retardant layer, and the buffer assembly is used for buffering when the wire is pressed. According to the utility model, the design of the wire core, the buffer assembly and the flame-retardant layer is utilized, the flame-retardant layer can prevent continuous combustion of the wire after external fire, when the wire is pressed, the outer ring drives the extrusion bump to extrude the springback ring, and the shape of the pressure-bearing block corresponds to that of the extrusion bump, so that the service life of the wire is prolonged. When the rebounding ring is continuously pressed into the corresponding groove of the pressure-bearing block along with the extrusion convex block, the pressed rebounding ring is continuously tensioned, so that a reverse acting force is provided for the extrusion convex block, continuous extrusion of the extrusion convex block is relieved, the external pressure of the electric wire is buffered, and an internal wire core is buffered and protected.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electric wire, especially relates to a halogen-free flame-retardant electric wire. BACKGROUND

[0002] With the continuous progress of science and technology, a large number of electric wires that can provide lighting, power, information and data transmission are needed, and when the electric wires are used, burning may occur due to accidents, in order to avoid the generation of a large amount of harmful gas when the electric wire burns, a protective sleeve made of high-flame-retardant low-smoke halogen-free polyolefin material is used, and when the electric wire burns outside, no smoke and toxic gas is generated.

[0003] However, when the electric wire is used in the office, work area and the like, due to the problem of inconvenient laying, part of the electric wire is exposed on the ground, so the staff will often step on the electric wire, and the internal wire cannot be buffered and protected, which will eventually cause damage to the internal wire of the electric wire. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a halogen-free flame-retardant electric wire to solve the problems in the above background.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a halogen-free flame-retardant electric wire, comprising:

[0006] Wire core;

[0007] Winding layer, which is arranged outside the wire core;

[0008] Flame-retardant layer, which is arranged outside the winding layer, and is used for flame-retardant of the electric wire;

[0009] Buffering assembly, which is arranged between the winding layer and the flame-retardant layer, and is used for buffering when the electric wire is pressed.

[0010] Preferably, the inside of the winding layer is sleeved with a filler for filling the gap between the wire core and the winding layer, the outer wall of the winding layer is sleeved with a shielding layer, and the shielding layer is located between the winding layer and the buffering assembly.

[0011] Preferably, the buffering assembly comprises:

[0012] Outer ring, which is sleeved inside the flame-retardant layer;

[0013] Inner ring, which is sleeved outside the shielding layer;

[0014] Resilient member, which is arranged between the outer ring and the inner ring;

[0015] The extrusion piece is arranged on the side of the outer ring facing the resilient piece, and is used for extruding the resilient piece.

[0016] Preferably, the resilient piece comprises an extrusion protrusion, the vertical section of the extrusion protrusion is semicircular, and the side of the inner ring facing the outer ring is fixedly connected with a pressure bearing block used for cooperating with the extrusion protrusion.

[0017] Preferably, the side of the pressure bearing block facing the extrusion protrusion is wavy, and the vertical section of the pressure bearing block is annular.

[0018] Preferably, the resilient piece comprises a resilient ring, and the side of the resilient ring facing the pressure bearing block is fixedly connected with a connecting column.

[0019] Preferably, the outer wall of the flame-retardant layer is sleeved with a sheath layer, and the inner part of the flame-retardant layer is sleeved with a heat insulation layer.

[0020] Technical effects and advantages of the utility model:

[0021] The utility model discloses a design of the core, the buffer assembly and the flame-retardant layer, which can prevent the continuous combustion of the electric wire after external ignition, and when the electric wire is pressed, the outer ring drives the extrusion protrusion to extrude the resilient ring, the shape of the pressure bearing block corresponds to the extrusion protrusion, so that the extrusion protrusion continuously presses the resilient ring into the corresponding groove of the pressure bearing block, continuously tensions the resilient ring under pressure, provides the reverse force for the extrusion protrusion, slows down the continuous extrusion of the extrusion protrusion, buffers the external pressure of the electric wire, and buffers and protects the internal core. DRAWINGS

[0022] Figure 1 It is the cross section structure schematic drawing of the utility model.

[0023] Figure 2 It is the utility model Figure 1 A enlarged structure schematic drawing.

[0024] In the drawing: 1, core; 2, wrapping layer; 3, filler; 4, shielding layer; 5, buffer assembly; 51, outer ring; 52, inner ring; 53, extrusion protrusion; 54, pressure bearing block; 55, resilient ring; 56, connecting column; 6, flame-retardant layer; 7, sheath layer; 8, heat insulation layer. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0026] The utility model provides a kind of halogen-free flame-retardant electric wire as shown in Figure 1 And Figure 2 As shown in a kind of halogen-free flame-retardant electric wire, comprising:

[0027] Wire core 1;

[0028] Around the sheath 2, around the sheath 2 is arranged in the outside of wire core 1;

[0029] Flame-retardant layer 6, flame-retardant layer 6 is arranged in the outside of around the sheath 2, and flame-retardant layer 6 is used for the flame-retardant of electric wire;

[0030] Buffering assembly 5, buffering assembly 5 is arranged between around the sheath 2 and flame-retardant layer 6, and buffering assembly 5 is used for the buffering when electric wire is under pressure.

[0031] The inside of around the sheath 2 is sleeved with filler 3 for the gap filling between wire core 1 and around the sheath 2, and the outer wall of around the sheath 2 is sleeved with shielding layer 4, and shielding layer 4 is located between around the sheath 2 and buffering assembly 5.

[0032] Further, wire core 1 is filled in the gap between around the sheath 2 and wire core 1, and shielding layer 4 is existing copper wire mesh shielding layer, and is sleeved in the outer wall of around the sheath 2.

[0033] Buffering assembly 5 includes:

[0034] Outer ring 51, outer ring 51 is sleeved in the inside of flame-retardant layer 6;

[0035] Inner ring 52, inner ring 52 is sleeved in the outside of shielding layer 4;

[0036] Resilient member, resilient member is arranged between outer ring 51 and inner ring 52;

[0037] Extrusion piece, extrusion piece is arranged on the side of outer ring 51 towards resilient member, and extrusion piece is used to extrude resilient member.

[0038] Resilient member includes extrusion lug 53, and the vertical section of extrusion lug 53 is semicircular, and one side of inner ring 52 towards outer ring 51 is fixedly connected with pressure-bearing block 54 for cooperating with extrusion lug 53.

[0039] One side of pressure-bearing block 54 towards extrusion lug 53 is wavy, and the vertical section of pressure-bearing block 54 is annular.

[0040] Resilient member includes resilient ring 55, and one side of resilient ring 55 towards pressure-bearing block 54 is fixedly connected with connecting column 56.

[0041] The outer wall of flame-retardant layer 6 is sleeved with sheath layer 7, and the inside of flame-retardant layer 6 is sleeved with heat insulation layer 8.

[0042] Further, the material of the buffer assembly 5 is all elastic rubber, the rubber is chloroprene rubber, the extrusion protrusion 53 and the outer ring 51 are bonded and fixed at the contact position, the pressure block 54 and the inner ring 52 are bonded and fixed at the contact position, the extrusion protrusion 53 and the pressure block 54 are respectively arranged on the opposite side of the outer ring 51 and the inner ring 52, the rebound ring 55 is arranged between the opposite side of the extrusion protrusion 53 and the pressure block 54, the connecting column 56 is arranged at intervals, the connecting column 56 is arranged at the protruding position of the pressure block 54, the two ends of the connecting column 56 are bonded and fixed with the rebound ring 55 and the opposite side of the connecting column 56, the position and shape of the recessed position of the pressure block 54 correspond to the position and shape of the extrusion protrusion 53 respectively, when the external force extrudes the wire, the outer ring 51 drives the extrusion protrusion 53 to extrude the rebound ring 55, the rebound ring 55 is extruded to the recessed position of the pressure block 54, the position of the extruded rebound ring 55 is gradually tightened, so that the force of the extrusion protrusion 53 is gradually increased in the opposite direction, so as to gradually offset the external force, so as to realize the effect of slowing down the external force, and protect the internal core 1, the end of the outer ring 51 and the inner ring 52 is sealed by a ring plate, so that the extrusion protrusion 53, the rebound ring 55 and the pressure block 54 are in a closed space, the buffer assembly 5 forms a cylindrical object, the buffer assembly 5 is directly sleeved outside the shielding layer 4 during installation, the heat insulation layer 8 is arranged between the flame-retardant layer 6 and the outer ring 51, and plays a role of isolating temperature, so as to avoid that the high temperature is transmitted to the inside of the wire when the outside of the wire is burned, and affects the buffer assembly 5, the material of the heat insulation layer 8 can be aerogel felt, and the sheath layer 7 is halogen-free low-smoke polyolefin sheath material, which is sleeved outside the flame-retardant layer 6.

[0043] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. A halogen-free flame-retardant electric wire, characterized by comprising: Include: A core wire (1); A wrapping layer (2) arranged outside the core wire (1); A flame-retardant layer (6) arranged outside the wrapping layer (2), the flame-retardant layer (6) is used for flame-retardant of the electric wire; A buffer assembly (5) arranged between the wrapping layer (2) and the flame-retardant layer (6), the buffer assembly (5) is used for buffering when the electric wire is pressed.

2. A halogen-free flame-retardant electric wire according to claim 1, wherein The wrapping layer (2) is sleeved with a filler (3) for gap filling between the core wire (1) and the wrapping layer (2), and the outer wall of the wrapping layer (2) is sleeved with a shielding layer (4), and the shielding layer (4) is located between the wrapping layer (2) and the buffer assembly (5).

3. A halogen-free flame-retardant electric wire according to claim 2, wherein The buffer assembly (5) comprises: An outer ring (51) sleeved inside the flame-retardant layer (6); An inner ring (52) sleeved outside the shielding layer (4); A resilient member arranged between the outer ring (51) and the inner ring (52); A pressing member arranged on one side of the outer ring (51) towards the resilient member, the pressing member is used for pressing the resilient member.

4. A halogen-free flame-retardant electric wire according to claim 3, wherein The resilient member comprises a pressing protrusion (53), the vertical section of the pressing protrusion (53) is semicircular, and one side of the inner ring (52) towards the outer ring (51) is fixedly connected with a pressure block (54) used for cooperating with the pressing protrusion (53).

5. A halogen-free flame-retardant electric wire according to claim 4, wherein One side of the pressure block (54) towards the pressing protrusion (53) is wavy, and the vertical section of the pressure block (54) is annular.

6. A halogen-free flame-retardant electric wire according to claim 4, wherein The resilient member comprises a resilient ring (55), and one side of the resilient ring (55) towards the pressure block (54) is fixedly connected with a connecting column (56).

7. A halogen-free flame-retardant electric wire according to claim 1, wherein The outer wall of the flame-retardant layer (6) is sleeved with a sheath layer (7), and the inside of the flame-retardant layer (6) is sleeved with a heat insulation layer (8).

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