FR2628603A1 - Conductor for electric fences - Google Patents

Abstract

The conductor according to the invention comprises at least one metal wire arranged on a support 1 which is in the form of a woven strip, and is essentially characterised in that it comprises at least one metal wire 4, made of a material which is a good conductor of electricity, and at least one metal wire 5 which is made of a material with a high tensile strength, these being arranged spaced apart from each other or from one another and substantially parallel to the warp yarns 2 of the support 1.

Description

The present invention relates to a conductor for electric fences and more particularly for electric fences for the parking of animals.

 I1 is known to park animals to use wire which is a good conductor of electric current but which has the disadvantage of being difficult to move in order to modify the parking area.

Wire is used more particularly to delimit a fixed parking area.

Users to modify the parking areas use a flexible wire that is easily wound and can be reused without undergoing deformation.

This flexible wire is in known manner made up of several strands of plastic fibers twisted or braided with very fine stainless steel wires.

This type of flexible wire has the disadvantage on the one hand of having a low conductivity due to the small cross section of the metal wires and the very resistivity of the material used and on the other hand of being very not very visible to animals. .

 The increasing use of devices producing very large currents makes this type of flexible wire unsuitable for making fences.

In order to overcome this drawback, one solution consists in replacing the wires of low conductivity with wires of very conductive metal such as aluminum or copper.

If in terms of conductivity the results were sastifaisante another disadvantage appeared in the sense that these wires have a very weak resistance to traction and that consequently when the insulating components stretch under the effect of a strong traction the lead wires break.

With regard to the drawback of the low visibility of the conductors for animals, a solution has been provided by producing conductors in the form of very large ribbons in which are inserted electrically conductive metal wires.

However, another drawback is revealed at the level of the connections between conductors.

In fact, the probability in the junction that the electrical wires are in contact is low and therefore the conduction is interrupted.

In addition, this type of conductor is not very adaptable to existing insulators and therefore requires the creation of new ones.

The present invention aims to overcome all of these drawbacks by providing a flexible conductor and therefore reusable, good conductor of electricity, resistant to traction, visible to animals, allowing the use of already existing insulators and also allowing in a junction the continuity of the electrical conduction.

To this end, the conductor for electric fences according to the invention comprises at least one metal wire placed on a support in the form of a woven ribbon and is characterized in that it comprises at least one metal wire of a material which is a good conductor of electricity and at least one metal wire of a material resistant to mechanical traction, arranged at spacing from one or the other or from each other and substantially parallel to the chain wires of the support.

Other advantages and characteristics of the invention will appear in the description thereof illustrated in the appended drawings given by way of nonlimiting examples and in which - Figure 1 is a plan view of the conductor according to the invention.

- Figure 2 is a sectional view along line II / II of the
figure 1.

The conductor according to the invention is intended to form an electric fence by being supported by insulators of known type, each secured to a stake planted in the ground.

The conductor is placed under electric voltage by being connected to an electric current generating device delivering a current suitable for animals penned inside the fence.

The conductor as shown in Figure 1 comprises at least one metal wire disposed on a support 1 in the form of a ribbon.

The support 1 of the conductor according to the invention consists of several woven strands defining warp threads 2 and weft threads 3 transverse to the latter.

The chain wires 2 are longitudinal to the conductor according to the invention.

The support 1 is made of a material resistant to atmospheric conditions, having good elasticity, being non-conductive of electricity and being able to be easily colored.

This material can be synthetic, for example polypropylene or other, or natural, such as plant or animal fibers.

The support 1 in the form of a ribbon has a width such that all types of existing insulators can support the conductor according to the invention.

This width is preferably between 6 and 9 mm without this constituting a limit.

The conductor comprises on the support 1 at least one metal wire arranged parallel to the warp son 2 of said support.

According to a preferred embodiment, the conductor according to the invention comprises at least one metal wire 4 of a material which is good conductor of electricity and at least one metal wire 5 of a material resistant to mechanical traction, the metal wires 4 and 5 are spaced apart one or more of one or the other on the support 1 and extend substantially parallel to the warp threads 2 of the said support.

The metal wire or wires 4 of a material that is good conductor of electricity are for example made of copper or aluminum or the like.

These metal wires 4 are advantageously treated to resist atmospheric conditions, for example tinned for copper.

The metal wire (s) 5 of a material resistant to mechanical traction are, for example, preferably stainless steel to withstand atmospheric conditions.

It should be noted that the said tensile-resistant wire or wires are also electrically conductive but to a lesser extent than the wires 4.

The metal wires 4 and 5 are placed in the support while being woven with the warp wires 2 of the said support.

The metal wires 4 and 5 in the conductor according to the invention are looser than the chain wires 2 of the support 1 so that during mechanical traction on the conductor it is the support 1 by its chain wires 2 which first of all, the metal wire or wires 5 made of a material resistant to traction coming into play to reinforce the resistance of the conductor when the chain wires 2 of the support have reached a certain value of elongation.

On the other hand, the metal wire (s) 4 made of a good electrically conductive material are preferably looser than the metal wire (s) 5 made of material resistant to traction on the support 1 so that the said good metal conductor wire (s) are not subjected to of elongation only last after the metal wire or wires 5 and the chain wires 2 have reached a certain elongation under a given tensile force.

 However, it should be noted that for strong pulls, it is necessary that the support 1 and more particularly the chain wires 2 thereof break before the metal wires 4 and 5 in order to visualize the place of rupture of the conductor according to the invention.

In addition, it is necessary that the metal wire (s) 5 of tensile-resistant material break before the metal wire 4 conductors so that the conduction is maintained in the conductor.

These characteristics are obtained from the voltage differences between the warp wires 2 of the support 1, the metal conductor wire (s) 4 and the metal wire (s) 5 resistant to traction and the breaking thresholds of the chain wires 2 of the support 1 and metallic wires 4 and 5.

Thus the conductor according to the invention has good tensile strength 9 the traction provided by the support 1 and the metal wire or wires 5 resistant to traction and presents a possibility of elongation under the effect of a traction preventing the breaking of the or metallic wires 4 conductors before the other components of said conductor.

The support 1 by its warp wires 2 and the metal wire (s) 5 resistant to traction protect the metal wires 4 conductors so that the electrical conduction is ensured after a traction having not exceeded a certain value and allow by their characteristic of mechanical resistance and voltage difference to be able to visualize breaks in a conductor which still provides electrical conduction.

The metal wire (s) 4 and 5 are arranged at regular intervals from one another parallel to the chain wires 2 - of the support 1.

According to a preferred embodiment the conductor according to the invention comprises at least one metallic wire 4 which is a good conductor on each edge of the support 1 and at least one other of the same type in the middle part of said support and at least one resistant metallic wire 5 b traction between at least two 4-conductor metal wires.

As shown in FIGS. 1 and 2, the conductor according to the invention comprises a metallic wire 4 conductive on each edge of the support 1 and in the middle part of said support and a metallic wire 5 resistant to traction between two metallic wires 4.

This embodiment allows in a connection between two conductors according to the invention to allow the conduction of electricity from one conductor to another.

Indeed, in a junction between two conductors the highest probability of contact between the metallic wires 4 conductors is located on the edge of the conductive supports.

In addition, in a junction between two conductors which is ensured by the making of a knot, the support tends to bend in two along its length.

Thus, by this middle fold, there is at the fold a conductive metallic wire 4 which can easily come into contact in the knot with one of the other metallic wires 4 of the other conductor.

The support 1 of the conductor according to the invention is flexible as well as the metal wires 4 and 5 which allows its easy movement.

The metallic wires 4 conductors have a sufficient cross section as a function of the intensity of the current which they must receive and the metallic wires 5 resistant to traction are of a section such that they only break after the support 1 and before the 4-conductor metal wires under the effect of strong mechanical traction.

As stated above, the support 1 is in the form of a ribbon and is made of a material which can be easily colored.

The ribbon shape of the support 1 allows the driver to be visible from animals.

In addition, this support can be a light color in order to be visible both in the evening and in the sun by the flicker caused by the vibration due to the wind.

Advantageously, the support 1 of the driver can have several colors improving its visibility.

 For example, the edges of the support 1 can be of a certain color and the rest of the support can be of another color which will be highlighted by the color of the edges.

Thus the support 1 of the conductor according to the invention can have chain wires 2 intended to be arranged on the edges of a color different from the other chain wires.

The conductor according to the invention for electric fencing has good tensile strength and good conductivity of electric current over long lengths, is flexible and therefore reusable, is very visible to animals and can be adapted to already existing insulators.

It goes without saying that the present invention can receive all arrangements and all variants in the field of technical equivalents without departing from the scope of this patent.

Claims (1)

 CLAIM  R1 / Conductor for electric fences with at least one  metal wire placed on a support (1) having under  the shape of a woven ribbon and characterized in that it  comprises at least one metal wire (4) of a good material  electrically conductive and at least one metal wire (5)  of a material resistant to mechanical traction arranged at  spacing from each other and substantially  parallel to the chain wires (2) of the support (1). R2 / Conductor according to claim 1 wherein the wires  are woven with the warp threads (2) of the  support (1) characterized in that the metal wires (4)  and (5) are looser than the warp threads (2) of the  support (1). R3 / Conductor according to claims 1 and 2 characterized in that  that the metal wire (s) (4) in good material  electrically conductive are on the support (1) more  loose as the metal wires (5) made of resistant material  mechanical traction. R4 / Conductor according to claims 1, 2 and 3 characterized.  by the differences in tension between the warp threads (2)  of the support, the metallic wire or wires (4) and the  or the metallic wires (5) resistant to traction and by  the tensile strength of the warp threads (2)  support (1) and metallic wires (4) and (5) so  that during a very strong traction the warp threads (2) of the  support (1) break first and the metal wires  (4) drivers last. R5 / Conductor according to claim 1 characterized in that it  has at least one metallic wire (4) which is a good conductor  of electricity on each edge of the support (1) and at least one  other of the same type in the middle part of said support and  at least one metal wire (5) resistant to traction between  at least two metallic wires (4) conductors.  R6 / Conductor according to one of claims 1 and 5 characterized  in that it comprises a metallic wire (4) conducting on  each edge of the support (1) and in the middle part of  this and a tensile-resistant metal wire (5)  between two metal wires (4). R7 / Conductor according to claim 1 characterized in that  the conductive metal wires (4) are made of tinned copper. R8 / conductor according to claim 1 characterized in that  the tensile-resistant metal wires (5) are  stainless steel. R9 / Conductor according to claim 1 characterized in that  the conductive metal wires (4) are made of aluminum. R1O / Conductor according to claim 1 characterized in that the  support (1) has at least one light color in order to be  visible.