CN204505994U - The copper wire of electric wire screen layer braiding - Google Patents

Abstract

A copper wire for electric wire screen layer braiding, belongs to technical field of electric wires and cables.Comprise copper wire body, be characterised in that; The shape of cross section ovalize of described copper wire body.Due to the prejudice overcome in prior art, copper wire rounded for shape of cross section is changed into the copper wire of shape of cross section ovalize, thus both can save copper wire about 20%, the shield effectiveness of electric wire can be ensured again.

Description

The copper wire of electric wire screen layer braiding

Technical field

The utility model belongs to technical field of electric wires and cables, is specifically related to the copper wire of a kind of electric wire screen layer braiding.

Background technology

As is known in the industry, the electric wire with function of shielding all has a screen layer (industry custom claims armouring braid) in its oversheath, because screen layer is formed with weaving manner, is thus usually called metal knitted housing or metal knitted net.In disclosed Chinese patent literature, have more than hundreds of item about the technical scheme of shielded cable, but the metal knitted housing of shielded cable wire used is the rounded copper wire of shape of cross section.With the rounded copper wire (industry is called standard round copper cash) of shape of cross section although the metal knitted housing woven can play the shielding action of expectation, and be not seen in the report that standard round copper wire is queried for a long time all the time.But, due to copper belong to non-ferrous metal category and be most valuable strategic resource, add that price constantly rises in recent years, increase the product cost of electric wire production firm on the one hand, consume a large amount of copper resources on the other hand.So, how find rational equalization point to become industry to pay close attention between the due shield effectiveness of electric wire and expect the technical problem that solves with ensureing economizing on resources.

For above-mentioned prior art, the applicant has done positive and useful exploration, finally finds a way to resolve the problem, and is taking in the simulated test that the applicant plant area carries out under secrecy provision, and result proves practicable.

Summary of the invention

Task of the present utility model is that providing a kind of not only significantly can save valuable copper material resource but also fully can ensure the copper wire that the electric wire screen layer of due shield effectiveness weaves.

Task of the present utility model has been come like this, and a kind of copper wire of electric wire screen layer braiding, comprises copper wire body, be characterised in that; The shape of cross section ovalize of described copper wire body.

In a specific embodiment of the present utility model, described copper wire is originally external is combined with tin coating.

In another specific embodiment of the present utility model, the thickness of described tin coating is 0.001-0.002 ㎜.

Copper wire rounded for shape of cross section is changed into the copper wire of shape of cross section ovalize by the technical scheme that the utility model provides due to the prejudice overcome in prior art, thus both can save copper wire about 20%, and can ensure again the shield effectiveness of electric wire.

Accompanying drawing explanation

Fig. 1 is the first embodiment schematic diagram of the present utility model.

Fig. 2 is the second embodiment schematic diagram of the present utility model.

Detailed description of the invention

embodiment 1:

Refer to Fig. 1, Fig. 1 gives the copper wire body 1 of shape of cross section ovalize, the copper of about 20% can be saved for the copper wire that the copper wire body 1 of this cross sectional shape is rounded relative to known shape of cross section and standard round copper cash, and any impact can not be produced for shield effectiveness, this can be confirmed by the example that applicant is lifted below: the round copper wire taking diameter as 0.2 ㎜, the sectional area of this round copper wire is 0.0314 ㎜ ²; And as the copper wire body 1 that i.e. the utility model of horizontal ovalize is recommended, its sectional area is that 0.2 ㎜ × 0.16 ㎜ (major radius 0.1 ㎜ × short radius 0.08 ㎜ × 3.14) is 0.02512 ㎜ ².So the proof copper-wire braided housing of same length, when using the latter (i.e. oval copper wire of the present utility model), comparable the former (standard round copper cash) saves the copper of 20%, thus both significantly can reduce product cost, can ensure shielding properties again.

embodiment 2:

Refer to Fig. 2, because the toughness of fine copper silk is relatively little, thus in order to avoid fractureing, so can in conjunction with tin coating 2 outside copper wire body 1, the thickness of tin coating 2 is preferably 0.001-0.002 ㎜, is 0.0012-0.0018 ㎜ preferably, is 0.0014-0.0016 ㎜ better, be preferably 0.0015 ㎜, the present embodiment selects 0.0015 ㎜.All the other are all with the description to embodiment 1.

Claims (3)

1. a copper wire for electric wire screen layer braiding, comprises copper wire body (1), it is characterized in that; The shape of cross section ovalize of described copper wire body (1).

2. the copper wire of electric wire screen layer braiding according to claim 1, is characterized in that being combined with tin coating (2) outside described copper wire body (1).

3. the copper wire of electric wire screen layer braiding according to claim 2, is characterized in that the thickness of described tin coating (2) is 0.001-0.002 ㎜.