EP2733287A2 - Anti-theft device and method for manufacturing such a device - Google Patents

Abstract

The device has a textile hollow strap (2) comprising a connection wire that extends between upper surface (2a) and a lower surface (2b). The connection wire delimits two longitudinal sleeves (7, 8) of respective axes (l1, l2). One of the sleeves retains a metal elongated element (10) while the other sleeve retains an elongated multi-filamentary wire (11). The metal element and the multi-filamentary wire are placed along the longitudinal axes respectively. Number of wires per cm on the upper and/or lower surfaces delimiting the former sleeve is smaller than that of the latter sleeve. An independent claim is also included for a method for manufacturing an anti-theft device.

Description

The present invention relates to an antitheft device, especially for cycles, comprising a textile hollow strap having first and second ends and opposite upper and lower faces comprising wires and defining an interior volume.

The present invention also relates to a method of manufacturing such an antitheft device.

Anti-theft devices, particularly for cycles, are known and make it possible to secure them to a piece of street furniture (posts, bike racks, etc.).

Current deterrent anti-theft devices are generally in the form of an elongate body, such as a cable or a chain comprising several metal loops interlocked with each other, and possibly covered with a plastic sheath, the ends of which are arranged in kind of cooperating with locking means, such as a lock with a set of keys. They can be quickly implemented for short-term stops, usually half an hour, thus dissuading the thief little equipped.

There are also known anti-theft devices that can be wound on themselves in the form of a strap.

Also known frame anti-theft devices that immobilize the rear wheel for short stops but do not protect the flight by lifting.

The document WO-2010/103327 discloses an anti-theft strap comprising, in a superimposed manner, a polymer strap, an aramid fiber strap and a strap resulting from the combination of wire rope sections. The resulting strap thus has a significant thickness since resulting from the superposition of three straps, which generates a large radius of curvature during winding and makes storage difficult in a housing. In addition, the strap has a significant weight. It should be noted that the length available for the strap of the anti-theft device must be important to facilitate the attachment for example of a cycle to a piece of street furniture.

The document WO-92/03307 discloses a strap for securing loads on heavy goods vehicles or cargo ships. This strap is formed by weaving two opposite plies connected by connecting son in a central area so as to provide sheaths arranged in the longitudinal direction of the strap. Threads designated as being rigid are inserted along the length of the strap and between the connecting threads which delimit the multiple inner sleeves. This type of strap provides the provision of many sleeves over its entire width to plating and tamping the reinforcing elements in said sleeves. This results in a strap having a very average cut resistance resembling more straps such as those arranged on the backpacks. Indeed, the settling of the reinforcing elements makes it possible, when it is desired to cut with the aid of a cutting element of said strap, to fold it back on itself and thus to offer an angle of attack facilitating the cutting at using a tool.

In addition, this strap has a strong cutting resistance only in its edge portion to resist lateral attacks, so that the strap is easily attackable in its central part. This strap consists of large titration threads and metal elements resulting in a total weight of the order of 0.5 kg per meter and a large width of more than 50 mm thus making it difficult to transport, since bulky, bulky and heavy.

The present invention thus relates to an antitheft device comprising a strap having good resistance to cutting, shearing, and, in general, to conventional pocket tools in an urban environment, sufficiently flexible to be rolled up on itself, having a low surface mass so as to be portable and finally having a thickness reduced in relation to its width in order to be able to be stored in the wound state in a small volume as in a storage case.

The present invention also relates to a rot-proof and abrasion resistant strap.

The present invention thus relates to an antitheft device comprising a textile hollow strap having first and second ends and opposite upper and lower faces comprising wires and delimiting an interior volume, said strap comprises connecting son extending between said faces. upper and lower and delimiting a first longitudinal shaft sleeve (I1) and a second longitudinal shaft sleeve (I2), said first sleeve receiving at least one elongated metal element and said second sleeve receiving at least one elongated multifilament wire, said metal element and said wire being disposed along the longitudinal axis (I1, I2) respectively of the first sheath and the second sheath.

Typically, the number of wires per cm on the upper and / or lower face (s) delimiting said first sheath is less than the number of wires per cm on the lower and / or upper face (s) delimiting said second sheath.

Advantageously, the first sheath comprising a reinforcement formed of a metal elongate element more resistant to shearing and cutting and more bulky than a reinforcement formed of at least one multifilament yarn, is delimited by fewer yarns per centimeter compared to the second sheath which allows to provide a reduced thickness of the strap while maintaining good properties of resistance to cutting and shearing.

In the context of the present invention, it is understood by number of son per cm, the number of son in the longitudinal direction (L) or transverse (T) of the strap respectively corresponding to the number of warp or weft son per cm. Preferably, the number of threads per cm corresponds to the number of warp threads per cm oriented in the longitudinal direction (L) of the strap at a sheath.

Preferably, the number of threads per cm on the upper and / or lower face (s) delimiting the first sheath is less than 10%, still preferably 15%, and even more preferably 25% to the number of threads. by cm on the lower and / or upper face (s) delimiting said second sleeve.

Hollow webbing is understood to mean any hollow webbing obtained by the interlacing of one or more monofilament and / or multifilament yarns, in particular by weaving, braiding or knitting.

The monofilament and / or multifilament yarns used in the context of the present invention are preferably chosen from the following polymers, alone or in combination: polyamide 4-6,6-6 or 12, polyethylene terephthalate, poly (p-phenylene) terephthalamide) also referred to as para-aramid, poly (C m -phenylene terephthalamide) also referred to as meta-aramid, high-density polyethylene, liquid crystal polymers, aromatic polyethylene terephthalates, especially polyarylates.

Preferably, in general, the monofilament and / or multifilament yarns are synthetic yarns.

The sleeves according to the invention are delimited by connecting son, which are interlaced with the multifilament and / or monofilament son of the upper and lower faces delimiting the strap.

Preferably, the first and second ends of the anti-theft strap are secured together by means of locking means, by example using a padlock passed in said ends in the form of loops, and closed with a set of keys.

To secure cycles with a piece of street furniture, the anti-theft strap according to the invention preferably has a length greater than or equal to 80 cm, more preferably greater than or equal to 100 cm, more preferably greater than or equal to 130 cm, and still preferably greater than or equal to 150 cm.

In a variant, the strap comprises at least a third longitudinal longitudinal axis sheath (I3) delimited by connecting threads extending between its upper and lower faces, said third sheath receiving at least one elongated braided textile element, knitted or wired disposed along the longitudinal axis (I3) of the third sleeve. Advantageously, the number of wires per cm on the lower and / or upper face (s) delimiting said third sleeve is less than the number of wires per cm on the lower and / or upper face (s) delimiting said second sleeve. .

The same technical effect is here reproduced for the third sheath in the case of a elongated textile element shaped and therefore more bulky than one or more son arranged in the second sheath.

The thickness of the strap and therefore its size are reduced while preserving the shear strength and cutting properties of the strap.

By elongated textile cord element is meant any elongate textile element resulting from the assembly by twisting or wrapping of one or more monofilament and / or multifilament yarns, said yarns being described above.

In one variant, the strap comprises three second sleeves each receiving at least one multifilament yarn alternated one by one with two third sleeves each receiving at least one elongated textile element braided, knitted or cabled, the alternation of the second and third sheaths forming a repetition sequence.

The number of repetition sequences is a function of the desired width for the strap.

In one variant, the textile hollow strap comprises at least two repetition sequences, each repetition sequence being separated from the adjacent sequence by a first sleeve receiving at least one metallic elongated element.

In one variant, the textile hollow strap has left and right edges and comprises two first sleeves, each receiving at least one metallic elongated element, disposed respectively along the left and right borders, preferably at least one repeat sequence is arranged between said first two sleeves.

In a sub-variant, the strap may comprise a repetition sequence according to the invention disposed between two first sleeves or two repeat sequences arranged between two first sleeves and separated by a third first sleeve.

The strap may thus comprise (n) repetition sequences arranged between two first sleeves along its left and right edges and separated one by one by a first sheath according to the invention.

The provision of a first sheath between two repetition sequences allows the angle of attack of the strap by a shearing or cutting tool is formed by the elongated metal member when the repeat sequences according to the invention are superimposed.

Similarly, if the repetition sequences are not superimposed on each other, the angle of attack is formed by the left or right border also comprising a metal elongate member.

In a variant, the textile strap is a double-sided fabric warp or weft.

Advantageously, the textile strap is manufactured in a single weaving operation. Preferably, the left and right borders of the textile webbing are formed by the selvedges of double-sided fabric warp or weft.

A double-sided warp or weft fabric is understood to mean any fabric comprising two sets of warp yarns woven with a set of weft threads or two sets of weft threads woven with a set of warp threads.

Preferably, the textile strap according to the invention is a double-sided warp fabric.

This characteristic also allows the webbing to be made by weaving the sleeves via binding threads that are woven together with the upper and lower faces, which further reduces the bulk of said strap and in particular its width and thickness. .

In a variant, the left and right edges of the strap are formed respectively by the left and right edges of the double-sided fabric warp or weft.

In a variant, the multifilament yarn (s) are freely arranged in the second sleeve, said second sleeve comprising between 520 dtex / mm ² to 965 dtex / mm ² , more preferably between 600 dtex and 800 dtex / mm ² , or multiple multifilament yarns.

When the strap is folded to form an angle of attack of the latter to a cutting or shearing tool, the son are not plated and crushed by the textile structure of the strap but are instead free to move and s agglomerating at the angle of attack formed thereby further improving the shear strength and cutting of the strap.

The unit indicated in mm ² is the cross-sectional area of a sheath, it is measured by multiplying the thickness of the second sheath by its measured width between the binding threads.

The unit indicated in dtex / mm ² is obtained by dividing the titration (dtex) of the threads introduced into a sheath by the surface of the cross-section. said sheath.

The thickness of the strap can be measured for example using a thick gauge.

In a variant, the elongate textile element disposed in the said third sheath or sleeves is a braid having a pitch forming an angle with the longitudinal axis (I3) of the third sheath (s) between 30 ° and 60 ° °, preferably between 40 ° and 50 °.

This arrangement improves the shear and cutting resistance of the third (s) sheath (x).

In a variant, the one or more third sleeves comprise between 1300 dtex / mm ² and 2400 dtex / mm ² of one or more elongated element (s) textile (s) plaited, knitted or cabled (s), preferably between 1600 dtex / mm ² and 2100 dtex / m ² .

The calculation method is here the same as that described above concerning the second sleeve.

In a variant, the elongated metal element comprises several assembled metal strands, preferably twisted. Each strand includes one or more twisted wires.

In a sub-variant, the elongate metal element comprises at least 15 twisted metal threads, preferably at least 25 twisted metal threads, more preferably at least 35 twisted metal threads, and still more preferably at least 45 twisted metal threads.

The inventors have found that the increase in the number of metal son twisted to form a metal elongate member could improve the flexibility of the strap and thus facilitate its winding.

In a variant, the first metal elongated element has a diameter less than or equal to 4 mm, preferably less than or equal to 2.5 mm.

In a variant, the strap has a thickness less than or equal to 5 mm, preferably less than or equal to 3.5 mm.

In a variant, the ratio between the width and the thickness (I / e) of the strap is between 5 and 10, preferably between 6 and 9.

This arrangement ensures the strap a reduced footprint, in particular allowing it to be wound on itself in a storage box. The strap can thus advantageously have a length greater than or equal to 170 cm.

Advantageously, said at least one braided, knitted or cabled textile elongated element and said multifilament yarns are chosen from the following polymeric materials, alone or in combination: polyamide 4-6,6-6 or 12, polyethylene terephthalate, poly (p phenylene terephthalamide) also referred to as para-aramid, poly (C m -phenylene terephthalamide) also referred to as meta-aramid, high-density polyethylene, liquid crystal polymers, aromatic polyethylene terephthalates, especially polyarylates.

In a variant, the textile strap is a fabric whose upper and / or lower faces comprise warp floats in the longitudinal direction (L) of the strap of at least three.

This arrangement further optimizes the thickness and weight of the strap.

Preferably, the end of the strap is folded on itself and secured, for example by sewing, to the strap, so as to form a loop.

In a variant, the first end of the strap, and possibly the second end, are folded back on themselves so as to form a fastening loop blocked by a part enveloping at least a portion of said loop.

In a sub-variant, the loop formed by the end of the folded strap on itself is overmolded by a piece in at least one polymeric material (polypropylene, polyethylene terephthalate, polyamide 4-6, polyamide 6-6, polyamide 12, high molecular weight polyethylene, polyethylene, styrene butadiene rubber, etc ...) over a portion of its length so that a portion of the loop projects from the said piece and can thus serve as a fastening loop capable of cooperating with a locking means.

In a sub-variant, the loop formed by the end of the strap folded on itself is completely covered with a molded part, a fastener, such as a fastening loop comprising a loop for the strap, having previously secured to said loop.

These two sub-variants can protect a cutting tool the fastening zone of the loop formed at the end of the strap, generally obtained by sewing.

It is of course possible in another variant that an end of the strap forming a loop does not include an overmolded part. In this case, said end is preferably fixed inside a housing, able to store said strap in the wound state. The other end of the strap is preferably arranged as described in the sub-variants above because accessible to the outside of the casing for the unwinding of the strap.

1. a. Une étape de tissage d'une sangle creuse double face chaîne ou trame comprenant des faces supérieure et inférieure opposées et des bordures gauche et droite délimitant un volume intérieur et des première et seconde extrémités, de préférence les bordures gauche et droite sont formées par les lisières,
2. b. Une étape de formation, au cours de l'étape de tissage, d'un premier fourreau longitudinal d'axe (I1) et d'un second fourreau longitudinal d'axe (I2) par l'agencement de fils de liaison s'étendant entre les faces supérieure et inférieure de ladite sangle textile,
3. c. Une étape d'insertion au-cours de l'étape de tissage d'un élément longiligne métallique dans le premier fourreau et de fils multifilamentaires dans le second fourreau.

The invention also relates to a method of manufacturing an anti-theft device according to one of the preceding embodiments advantageously comprising the following steps:

1. at. A step of weaving a double-sided warp or weft webbing comprising opposite top and bottom faces and left and right edges delimiting an interior volume and first and second ends, preferably the left and right edges are formed by the selvedges ,
2. b. A step of forming, during the weaving step, a first longitudinal shaft sleeve (I1) and a second longitudinal shaft sleeve (I2) by the arrangement of connecting wires extending between the upper and lower faces of said textile strap,
3. vs. An insertion step during the step of weaving a metal elongated element in the first sheath and multifilament son in the second sheath.

Advantageously, the number of threads per cm on the upper and / or lower face (s) delimiting said first sheath is less than the number of threads per cm on the lower and / or upper face (s) delimiting said second sheath .

The strap according to the invention being manufactured by weaving, preferably on a loom of small width, such as the looms manufacturing ribbons, its thickness, its width and the arrangement of sleeves are optimized from the point of view of space and shearing and cutting resistances.

The method according to the invention may also comprise a step of providing the locking means of the first and second ends of the strap inter-connected or capable of being secured to one or both ends.

During step b), a third longitudinal sheath can be formed via the connecting wires. During step c), at least one elongated braided, woven or knitted textile element can be inserted in said third sheath.

Preferably, step a) comprises weaving a double-sided hollow webbing.

The method according to the invention may also comprise a step of finishing the first and / or second end of the strap during which said end of the strap is folded back on itself, and preferably fixed in this state to the using a seam, then is covered in all or part of an overmolded part on said loop in at least one polymeric material, as described above.

Optionally, the loop formed by the end of the strap can comprises an attachment member, such as a fastening loop having a loop.

In another alternative, the end of the strap can simply be terminated with a seam for forming a loop.

• la figure 1 est une représentation schématique et en perspective d'un premier exemple d'une sangle creuse textile, avec une portion arrachée, d'un dispositif antivol selon l'invention ;
• la figure 2 est une représentation en coupe transversale selon le plan de coupe 2-2 représenté à la figure 1 ;
• la figure 3 est une représentation schématique vue de dessus d'un deuxième exemple d'une sangle creuse textile d'un dispositif antivol selon l'invention ;
• la figure 4 est une représentation en coupe transversale selon le plan de coupe 4-4 représenté à la figure 3 ;
• la figure 5 est une représentation schématique vue de côté d'un premier exemple d'une première extrémité de la sangle creuse textile du dispositif antivol selon l'invention ;
• la figure 6 est une représentation schématique vue de côté d'un second exemple d'une première extrémité de la sangle creuse textile du dispositif antivol selon l'invention ;
• la figure 7 est une représentation schématique vue de dessus d'un troisième exemple de la première extrémité de la sangle creuse textile du dispositif antivol selon l'invention.

The present invention will be better understood on reading the two embodiments described hereinafter, given by way of nonlimiting example, and illustrated by the following figures appended hereto and in which:

• the figure 1 is a schematic and perspective representation of a first example of a textile hollow strap, with a portion torn off, of an antitheft device according to the invention;
• the figure 2 is a cross-sectional representation along the section plane 2-2 shown in FIG. figure 1 ;
• the figure 3 is a schematic representation seen from above of a second example of a textile hollow strap of an antitheft device according to the invention;
• the figure 4 is a cross-sectional representation along the sectional plane 4-4 shown in FIG. figure 3 ;
• the figure 5 is a schematic side view of a first example of a first end of the textile hollow strap of the antitheft device according to the invention;
• the figure 6 is a diagrammatic representation seen from the side of a second example of a first end of the textile hollow strap of the antitheft device according to the invention;
• the figure 7 is a schematic representation seen from above of a third example of the first end of the textile hollow strap of the antitheft device according to the invention.

A first example of a textile hollow strap 2 of an antitheft device 1 according to the invention is shown in perspective and in a portion torn from the figure 1 in order to make visible its inner volume 5. This belt 2 has a first 3 and second 4 ends and upper sides 2 a and 2 b opposite bottom comprising son and delimits an inner space 5. Said strap has a longitudinal axis L1 and a transverse axis T1.

The strap 2 comprises connecting son 6 extending between said faces upper 2a and lower 2b and defining first sleeves 7 I1 longitudinal axis, the second longitudinal axis sleeves 8 I2 and third longitudinal ducts 9 of axis I3. The first sleeves 7 receive in their internal volume each elongate metal element 10 disposed along the longitudinal axis I1. The second sleeves 8 each receive in their interior volume multifilament son 11 longilines arranged along the longitudinal axis I2. The third sheaths 9 each receive in their interior volume an elongated textile element 12 braided, knitted or wired, preferably a braid, disposed along the longitudinal axis I3.

The number of threads per cm, in particular the number of warp threads per cm, on the upper 2 a and lower 2 b faces delimiting said first sleeves 7 is smaller than the number of threads per cm on the upper 2 a and lower faces. 2b delimiting said second sleeves 8.

The number of son per cm, preferably the number of son chain per cm, on the upper two sides a and lower 2b delimiting said third ducts 9 is less than the number of son per cm, preferably the number of son of chain per cm 2 on the upper faces and a lower 2b delimiting said second sleeves 8.

Thus, the number of warp son per cm on the bottom face 2b and upper 2a delimiting said second sleeves 8 is greater than the number of warp son per cm on the top and bottom faces delimiting the first 7 and third 9 sheaths.

The hollow textile strap 2 shown in FIG. figure 1 is preferably a double-sided warp fabric.

This strap 2 comprises three second sleeves 8 alternating one by one with two third sleeves 9 so as to form a repeat sequence s1. The strap hollow textile 2 also comprises two first sleeves 7, respectively, arranged along the left and right edges 2 c 2 d and between which is disposed said s1 repeat sequence.

In this specific example, the left 2 c and right 2 d borders of the strap 2 are formed respectively by the left and right selvedges of a double-sided fabric warp.

Preferably, the warp yarns form floats of at least three, ie they pass over at least three weft yarns in order to optimize the number of threads / cm and the thickness of said strap 2 .

Preferably, the second sleeves 8 comprise multifilament son 11 which are freely arranged in their internal volume. Thus, said second sleeves 8 receive between 520 dtex / mm ² to 965 dtex / mm ² multifilament son 11.

In this specific example, the second sleeves 8 comprise between 12 and 16 multifilament son 11 having a titration between 1000 and 1400 denier.

Preferably, the elongate textile element 12 disposed in the third sleeves 9 is a braid having an outer diameter of between 2 and 2.4 mm for a linear weight of between 2 and 4 g / meter.

Said braid results from braiding between 12 and 18 multifilament yarns, each having a titration between 1200 deniers and 1800 deniers.

The elongated metal element 10 is preferably a stainless steel cable obtained by twisting between 5 and 10 strands each comprising from 5 to 10 twisted wires, so as to form a wire rope having an outer diameter of between 1 and 1.4 mm as an example.

The textile web 2 is obtained by weaving multifilament yarns, preferably polyethylene terephthalate.

The first sleeves 7 comprising wire ropes have the function of opposing a resistance to conventional cutting tools, such as scissors or a cutter, while the second sleeves 8 receiving mutifilamentaires son have the function to further oppose a resistance to pincers and the pliers.

The multifilament yarns 11 arranged in the second sleeves 8 are preferably made of high density polyethylene.

Said son 11 being freely disposed inside the second sleeves 8, they are free to move and agglomerate with respect to the cutting tool.

In addition, the braids 12 as well as the multifilament yarns 11 are freely disposed in the second 8th and third 9th sleeves so as to be able to "leak" under the attack of cutting or shearing tool blades.

The braids 12 are preferably obtained by braiding multifilament yarns in a liquid crystal polymer, such as the yarns marketed under the trademark Vectran® and thus make it possible to improve the shear strength of the strap 2.

The thickness e1 of the strap 2 shown in FIG. figure 2 is preferably less than or equal to 5 mm and in this specific example, of the order of 3.5 mm.

The second example of strap 13 shown in Figures 3 and 4 has two repetition sequences (s1, s2) as described above.

The strap 13 will be described hereinafter by its differences with the strap 2. The references used for the strap 2 are taken for the strap 13 when they designate the same technical elements in the same arrangement and the same composition.

Thus, in the textile strap 13 shown in Figures 3 and 4 , the first repeat sequence (s1) is separated from the sequence adjacent (s2) by a first sheath 7 has central receiving an elongated metal element 10. The second repeat sequence s2 is the same as the first repeat sequence s1: three third sheaths 9 intercalated with two second ducts 8 are arranged between two first sleeves 7 and 7 has, in particular between the first sheath 7 along the edge 13 c and the first central sleeve 7 is to s1 sequence and said first central sleeve 7a and the first sheath 7 along the edge 13 of for the sequence s2.

The strap 13 comprises hollow textile first sleeves 7 arranged respectively along its left and right edges 13 c 13 d corresponding in this specific example the left and right edges of the chain double-sided fabric forming the belt 13.

The strap 13 has a longitudinal axis L2 and a transverse axis T2.

The strap 13 has a thickness e2 less than or equal to 3.5 mm and a width less than 30 mm.

Preferably, the ratio between the width (I4, I5) and the thickness (e1, e2) of 2.13 straps is between 5 and 10 and preferably between 6 and 9, in order to optimize the size of the strap and its weight.

Thus, in operation, the straps 2.13 always present a leading edge formed of a first sleeve 7 or to its left edges 2c, 13c and right two d, 13 d, is at the center if one folds the repeat sequences s1, s2 one over the other. This arrangement makes it possible to prevent the strap 2.13 from opposing an attack angle without reinforcement, in particular without an elongated metallic element.

The figure 5 represents a first example of the first end 3 of the hollow textile strap 2 according to the invention.

This end 3 has been folded back on itself so as to form a loop 14 and is maintained in this state by means of a seam 15.

The loop 14 thus formed is able to cooperate with locking means, such as a padlock or with a fastener disposed inside a housing adapted to store said strap 2 in the wound state, said housing being able to release the strap 2 by unwinding by exerting pressure on the second free end 4.

The figure 6 represents a second example of the first end 3 of the textile strap 2.

Said first end 3 is thus folded on itself and preferably maintained in this state by means of a seam 15 and then a part 16 is injected on a portion p of said loop 14 to cover the seam 15 and improve the resistance to shear and cutting of the fastening zone of the loop 14.

The loop 14 thus formed is available to cooperate with locking means.

Finally, figure 7 represents a third example of the first end 3 of a textile hollow strap 2.

This first end 3 is also folded back on itself so as to form a loop 14 and maintained in this state preferably by means of a seam 15.

An attachment loop 17 comprising a loop 18 is secured via its loop 18 to said loop 15 thus formed.

An overmolded piece 16 made of a polymeric material thus covers said loop 18 and at least the zone of fastening of the loop 14 on itself so as to improve the shear and cutting resistance of said strap 2.

Claims (15)

Anti-theft device (1) comprising a textile hollow webbing (2, 13) having first (3) and second (4) ends and opposed upper (2a, 13a) and lower (2b, 13b) faces comprising wires and delimiting a internal volume (5), said strap (2, 13) comprises connecting wires (6) extending between said upper (2a, 13a) and lower (2b, 13b) faces and delimiting a first longitudinal sheath (7) d axis (I1) and a second longitudinal sleeve (8) of axis (I2), said first sleeve (7) receiving at least one elongate metal element (10) and said second sleeve (8) receiving at least one elongated multifilament yarn (11), said metal element (10) and said wire (11) being arranged along the longitudinal axis (I1, I2) respectively of the first sheath (7) and the second sheath (8), characterized in that the number of threads per cm on the upper (2a, 13a) and / or lower face (s) (2b, 13b) delimiting said first sheath (7) is smaller than the number of wires per cm on the upper and / or lower face (s) delimiting said second sheath. Antitheft device (1) according to claim 1, characterized in that the strap (2, 13) comprises at least one third longitudinal sleeve (9) of longitudinal axis (I3) delimited by connecting son (6) extending between its upper (2a) and lower (2b) faces, said third sleeve (9) receiving at least one elongated braided, knitted or woven textile element arranged along the longitudinal axis (I3) of the third sheath, and in that the number of threads per cm on the lower face (s) (2b) and / or upper (2a) delimiting said third sleeve (9) is smaller than the number of threads per cm on the lower face (s) (2b) and / or higher (2a) delimiting said second sleeve (8). Antitheft device (1) according to claim 2, characterized in that the strap comprises three second sleeves (8) each receiving at least one multifilament yarn, alternated one by one with two third sleeves (9), each receiving at least one textile element elongated (12) braided, knitted or wired, the alternation of the second (8) and third (9) sleeves forming a repetition sequence (s1, s2). Antitheft device (1) according to claim 3, characterized in that the textile hollow strap (13) comprises at least two repetition sequences (s1, s2), each repetition sequence (s1, s2) being separated from the adjacent sequence ( s1, s2) by a first sheath (7) receiving at least one elongated metallic element (10). Antitheft device (1) according to any one of claims 1 to 4, characterized in that the textile hollow strap (2, 13) has left (2c) and right (2d) edges and comprises two first sleeves (7), each receiving at least one elongate metallic element (10), arranged respectively along the left (2c) and right (2d) borders, preferably at least one repetition sequence (s1, s2) is disposed between said first two sleeves (7). ). Antitheft device (1) according to any one of claims 1 to 5, characterized in that the textile strap (2, 13) is a double-sided fabric warp or weft. Antitheft device (1) according to claim 6, characterized in that the left (2c, 13c) and right (2d, 13d) edges of the strap (2, 13) are respectively formed by the left and right selvedges of the double-sided fabric warp or weft. Antitheft device (1) according to one of Claims 1 to 7, characterized in that the multifilament yarn (11) is disposed freely in the second sleeve (8) and in that said second sleeve (8) comprises between 520 dtex / mm ² to 965 dtex / mm ² , more preferably between 600 dtex and 800 dtex / mm ² , one or several multifilament yarns (11). Antitheft device (1) according to any one of claims 2 to 8, characterized in that the elongate textile element (12) disposed in the said third or third sleeves (9) is a braid having a pitch forming an angle with the longitudinal axis (I3) of the third (s) sheath (x) between 30 ° and 60 °, preferably between 40 ° and 50 °. Antitheft device (1) according to any one of claims 2 to 9, characterized in that the third or third sleeves comprise between 1300 dtex / mm ² and 2400 dtex / mm ² of one or more elongated element (s) (s) ) braided textile (s), knitted or cabled, preferably between 1600 dtex / mm ² and 2100 dtex / m ² . Antitheft device (1) according to any one of claims 1 to 10, characterized in that the strap (2, 13) has a thickness less than or equal to 5 mm, preferably less than or equal to 3.5 mm. Antitheft device (1) according to any one of claims 1 to 11, characterized in that the ratio between the width (I4, I5) and the thickness (e1, e2) of the strap (2, 13) is between 5 and 10, preferably between 6 and 9. Antitheft device (1) according to any one of claims 1 to 12, characterized in that the textile strap (2, 13) is a fabric whose or the upper (2a, 13a) and / or lower faces (2b, 13b) ) comprise warp floats in the longitudinal direction (L1, L2) of the strap of at least three. Antitheft device (1) according to any one of claims 1 to 13, characterized in that the first end (3) of the strap (2), and optionally the second end (4), are folded back on themselves so as to form an attachment loop (14) blocked by a part (16) enveloping at least a portion of said loop. Method of manufacturing an antitheft device (1) according to any one of claims 1 to 14, characterized in that it comprises the following steps: at. A step of weaving a double-sided warp or weft webbing (2, 13) comprising opposite upper (2a, 13a) and lower (2b, 13b) faces and left (2c, 13c) and right (2d, 13d) delimiting an interior volume (5) and first (3) and second (4) ends, preferably the left (2c, 13c) and right (2d, 13d) borders are formed by the selvedges, b. A step of forming, during the weaving step, a first longitudinal sleeve (7) of axis (I1) and a second longitudinal sleeve (8) of axis (I2) by the arrangement of connecting son (6) extending between the upper (2a) and lower (2b) faces of said textile strap, vs. An insertion step during the weaving step of a metallic elongated element (10) in the first sheath (7) and one or more multifilament threads (11) in the second sheath (8), and in that the number of threads per cm on the upper (2a, 13a) and / or lower face (s) (2b, 13b) delimiting said first sheath (7) is less than the number of threads per cm on the or the upper (2a, 13a) and / or lower (2b, 13b) faces delimiting said second sheath.

Images