CN203827537U - Electric heating wire - Google Patents

Abstract

The utility model relates to an electric heating wire comprising a guide core, an inner insulation layer, a guide wire, a fiber braided layer and an outer insulation layer; the guide core is a twisted wire and wrapped by the inner insulation layer; 5-25 guide wires wind in parallel on the inner insulation layer in a spiral manner and are wrapped by the fiber braided layer; the fiber braided layer is wrapped by the outer insulation layer. the electric heating wire is good in anti-folding performance, can be normally used after light damage, and is safe and reliable.

Description

Electric heating wire

Technical field

The utility model relates to a kind of electric wire, belongs to technical field of electric wires and cables.

Background technology

Electric wire refers to the material for electric power, communication and associated transport purposes.Electric wire and cable does not have strict boundary.Conventionally product few core number, that product diameter is little, simple in structure is called to electric wire, not insulation be called bare wire, other be called cable.Electric wire is made up of one or a few soft wire, and outer bread is with light and soft sheath.Along with the raising day by day of living standard, people have proposed higher performance requirement to the electric wire of electric equipment, require tensile strength high, and resistance to bending performance is good, durable in use.

At present, part adopts copper rod is drawn into after the copper wire of certain wire diameter as the wire of power line and electric heating wire, processes as insulating polymeric materials such as polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC) in outer cladding.Although this wire also can meet the instructions for use in certain limit, in use procedure very easily due to mechanical damage or overheatedly cause that any place damages, and causes whole electric equipment to use.

Chinese patent 200920263845.4 discloses a kind of LED flexible neon, comprise heart yearn, be coated on heart yearn outside crust, be arranged on LED bulb in heart yearn and through the copper twisted wire in heart yearn, the lamp base of described LED bulb is electrically connected with copper twisted wire, in described copper twisted wire, be provided with a carbon fiber wire, described carbon fiber wire and described copper twisted wire are isometric.Though this stranded wire strength strengthens to some extent, reliability fail safe is still not good, cannot use as electric heating wire.

Utility model content

The technical problems to be solved in the utility model is, provides a kind of resistance to bending performance good, still can normally use safe and reliable electric heating wire after slightly losing.

The utility model is that the technical scheme that solves the problems of the technologies described above proposition is: a kind of electric heating wire, comprises and lead core, inner insulating layer, wire, fiber braiding layer and external insulation layer; The described core of leading is twisted wire, described in described inner insulating layer is coated on, lead outside core, described wire has 10 to 30, and each wire is spirally wound on described inner insulating layer side by side, described fiber braiding layer is coated on outside described wire, and described external insulation layer is coated on outside described fiber braiding layer.

The one of technique scheme is preferably: the wire diameter of above-mentioned wire is 0.05mm to 0.5mm.

The one of technique scheme is preferably: one metal wire is stranded forms by 7 to 60 for above-mentioned twisted wire, and described wire diameter wiry is 0.03mm to 0.2mm.

The one of technique scheme is preferably: above-mentioned twisted wire by 30 to 120 one metal wires be twisted into 2 to 20 strands again twice stranding form, described wire diameter wiry is 0.03mm to 0.2mm.

The one of technique scheme is preferably: above-mentioned wire is enamelled wire.

The utlity model has positive effect: electric heating wire of the present utility model adopts Wire-wound conductor as inner core, outer wrapping fiber braid, and inside and outside double insulating layer is set, the resistance to bending performance of electric heating wire is promoted greatly, and fatigue resistance increases than the electric heating wire of common electric equipment.This heater wire lead core and wire is all conductor, can not form and open circuit even if there is when use part to lose also, can normally use.This electric heating wire has good electrical insulation capability, and higher serviceability temperature and good bending resistance folding endurance are safe and reliable when use.

Brief description of the drawings

Fig. 1 is the structural representation of the cross section of electric heating wire of the present utility model.

Fig. 2 is the cutaway view of the inner core of the electric heating wire in Fig. 1.

Mark in above-mentioned accompanying drawing is as follows:

Lead core 1, inner insulating layer 2, wire 3, fiber braiding layer 4, external insulation layer 5.

Embodiment

Embodiment 1

See Fig. 1 and Fig. 2, a kind of electric heating wire of the present utility model, comprises and leads core 1, inner insulating layer 2, wire 3, fiber braiding layer 4 and external insulation layer 5.Leading core 1 is twisted wire, by 120 copper wires be twisted into 12 strands again twice stranding form, the wire diameter of copper wire is 0.08mm.Inner insulating layer 2 is coated on leads outside core 1.Wire 3 is enamelled wires, has 12, and wire diameter is 0.28mm.Each wire 3 is spirally wound on inner insulating layer 2 side by side.Fiber braiding layer 4 is coated on outside wire 3.External insulation layer 5 is coated on outside fiber braiding layer 4.The main component of inner insulating layer 2 and external insulation layer 5 is the insulating polymeric material of thermoplastic polyester elastomer (TPEE).

Embodiment 2

The remainder of the electric heating wire of the present embodiment is identical with embodiment 1, and difference is: lead core 1 by 60 stranded forming of B alloy wire, the wire diameter of B alloy wire is 0.12mm.

Embodiment 3

The remainder of the electric heating wire of the present embodiment is identical with embodiment 1, and difference is: lead core 1 by 43 stranded forming of enamel-cover copper wire, the wire diameter of enamel-cover copper wire is 0.2mm.

Embodiment 4

The remainder of the electric heating wire of the present embodiment is identical with embodiment 1, and difference is: lead core 1 by 43 stranded forming of B alloy wire, the wire diameter of B alloy wire is 0.2mm.

Embodiment 5

The remainder of the electric heating wire of the present embodiment is identical with embodiment 1, and difference is: wire 3 has 18, and wire diameter is 0.42mm.

Embodiment 6

The remainder of the electric heating wire of the present embodiment is identical with embodiment 1, and difference is: wire 3 has 20, and wire diameter is 0.1mm.

Electric heating wire of the present utility model is not limited to the various embodiments described above.Obviously, above-described embodiment is only for the utility model example is clearly described, and is not the restriction to execution mode of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also giving exhaustive to all execution modes.And these belong to apparent variation that spirit of the present utility model extended out or variation still among protection range of the present utility model.

Claims (6)

1. an electric heating wire, is characterized in that: comprise and lead core, inner insulating layer, wire, fiber braiding layer and external insulation layer; The described core of leading is twisted wire, described in described inner insulating layer is coated on, lead outside core, described wire has 10 to 30, and each wire is spirally wound on described inner insulating layer side by side, described fiber braiding layer is coated on outside described wire, and described external insulation layer is coated on outside described fiber braiding layer.

2. electric heating wire according to claim 1, is characterized in that: described wire is enamelled wire.

3. electric heating wire according to claim 1, is characterized in that: the wire diameter of described wire is 0.05mm to 0.5mm.

4. electric heating wire according to claim 1, is characterized in that: one metal wire is stranded forms by 7 to 60 for described twisted wire, and described wire diameter wiry is 0.03mm to 0.2mm.

5. electric heating wire according to claim 1, is characterized in that: described twisted wire by 30 to 120 one metal wires be twisted into 2 to 20 strands again twice stranding form, described wire diameter wiry is 0.03mm to 0.2mm.

6. according to the electric heating wire described in claim 4 or 5, it is characterized in that: described wire is enamelled wire.