CN114009159A

CN114009159A - Electromagnetic shielding device

Info

Publication number: CN114009159A
Application number: CN202080045686.XA
Authority: CN
Inventors: 克莱门特·杜斯特西尔; 瑞安·克里斯蒂安·格雷
Original assignee: Delfingen FR Anteuil SA
Current assignee: Delphi enables industry
Priority date: 2019-07-02
Filing date: 2020-06-30
Publication date: 2022-02-01
Also published as: EP3994779A1; WO2021001384A1; MX2021015580A; JP2022538650A; KR20220029720A

Abstract

The present application relates to an electromagnetic shielding device (40) comprising: at least one hollow protective textile sleeve (50) having a main rest diameter D1 and an inner volume configured to accommodate one or more elongated elements (20, 21); at least one hollow connecting fabric sleeve (60) having a resting diameter D greater than D1. The protective textile sleeve (50) comprises a substantially annular front portion (52) having a front open end (54), the connecting textile sleeve (60) comprises a substantially annular rear portion (62) having a rear open end (64), and the shielding device (40) comprises a first electrically conductive fixing region (70), in particular an at least partially annular region, in which the rear portion (62) of the connecting textile sleeve (60) and the front portion (52) of the protective textile sleeve (50) are at least partially fixed.

Description

Electromagnetic shielding device

Technical Field

The present application relates to an electromagnetic shielding device of the electromagnetic shielding fabric sleeve type.

The application also relates to a method for manufacturing an electromagnetic shielding device and to a device for transferring electrical energy comprising an electromagnetic shielding device.

Background

It is known to use electromagnetic shielding sleeves to protect cables mechanically and from electromagnetic interference, and to protect the external environment of these shielding sleeves from electromagnetic interference that can be generated by cables enclosed in these shielding sleeves, wherein the cables are arranged in the internal volume of these sleeves and at least one of their ends is connected with an electrical connector. These sleeves are formed of electrically conductive metal yarn and cover, by at least one of their ends, an electrical connector provided with a grounding area. Therefore, these sleeves must be sized to accommodate cables and one or more connectors having very different sizes. These sleeves are thus deformable, in particular radially expandable, so as to cover at least partially the connector, in particular the ground area, i.e. with a sufficient rest diameter, that is to say greater than or equal to the maximum outer dimension of the connector. The sleeve must also be configured to allow electrical connection to the ground area, typically by soldering between the sleeve and the ground area or by a clamping device fastened around the sleeve, which at least partially covers the ground area of the connector.

However, all metallic shielding sleeves have the disadvantage of not being radially expandable or being very little and not easily expandable, and therefore shielding sleeves have been proposed in which metallic yarns and yarns of plastic material are mixed to provide the shielding sleeve with radial expansion properties.

However, when the sleeve is in an expanded state in operation, that is to say when it protects the cable and partially covers one or more connectors, it does not perfectly ensure its function of shielding and protecting the cable from external mechanical attacks, since the expanded network of the sleeve has large openings and therefore a small area of contact with the element to be protected.

In addition, all-metal sleeves are expensive and heavy.

In addition, the cable or cables to be protected and the possible connectors connecting these cables do not have the same external dimensions, the space requirement of the connectors being generally greater than that of the cables. Thus, the shielding sleeve can be selected so as to have a diameter sufficient to cover the connector that will be much larger than the diameter required to accommodate a cable connected to the connector. Thus, the amount of shielding sleeve protecting the cable is excessive, resulting in a larger mass than the amount of shielding sleeve needed to mechanically protect the cable from electromagnetic interference. However, these shielding sleeves can be used in the transportation sector, for example in the automotive sector, in particular for electric or hybrid vehicles, for which precise optimization of the weight is necessary because of the energy consumption which affects them. It is also possible to use a radially deformable shielding sleeve so that its rest diameter corresponds to the outer diameter occupied by the cable and so that the shielding sleeve is in an expanded state when covering the connector. However, as described above, the portion of the extension sleeve cannot properly ensure its shielding function. In addition, it can be complicated to have a shielding sleeve with a suitable diameter for covering the cable and capable of expanding sufficiently to cover the connector.

Thus, document US 2013/0068518 a1 relates to an electromagnetic shielding sleeve, the open end of which is folded over itself and can be radially expanded. In order for the expanded end portion to retain shielding properties equivalent to those provided by the rest of the sleeve, the end portion is folded over itself, the folded inner portion being disposed freely without expanding against the expanded outer portion. However, the shielding sleeve must be chosen such that it can expand sufficiently to be able to cover the connector. The operation of the arrangement of the folded part with the freely provided inner part is time consuming. In addition, even if the folded arrangement can improve the retention of the shielding performance, too much of the fabric structure of the expanded outer member is opened, the risk of expansion is too great, and the shielding performance is impaired.

Disclosure of Invention

It is an object of the present application to provide a shielding device whose shielding performance and mechanical protection function are similar when at rest (i.e. in the unassembled state) and in operation, while optimizing the quality of the shielding device.

It is an object of the present application to provide a shielding device which is simple to implement and which conforms to the dimensions of the cable and the connector or connectors connected to the cable.

The present application overcomes all or part of the above problems in accordance with a first aspect which relates to an electromagnetic shielding device comprising:

a. at least one hollow protective textile sleeve having a main rest diameter D1 and an interior volume configured to house one or more elongated elements,

b. at least one hollow connecting fabric sleeve having a rest diameter D2 greater than D1, the protective fabric sleeve comprising a substantially annular front portion having a front open end, the connecting fabric sleeve comprising a substantially annular rear portion having a rear open end, and the shielding device comprising a first electrically conductive fixing region, in particular being at least partially annular, in which the rear portion of the connecting fabric sleeve and the front portion of the protective fabric sleeve are at least partially fixed.

Advantageously, the shielding device comprises two textile sleeves having separate rest diameters, but assembled at one of their annular ends, so that the diameter of the connecting textile sleeve is adapted to the size of the connector, while the diameter of the protecting textile sleeve is individually adapted to the elongated element to be protected. Thus, the dimensions of the shielding device are adapted to the one or more connectors and the elongated element in different ways along its length, which makes it possible to adjust the weight of the device. In addition, it is advantageous for the body of the protective textile sleeve to have, in the extension of its annular front portion, a rest diameter D1 which substantially corresponds to the diameter in operation. Thus, when the protective textile sleeve accommodates the elongate element to be protected, the body is not in the expanded state and retains its shielding and mechanical protection properties. The same technical effect of joining the textile sleeves can be observed. The diameter of the main body of the connecting fabric sleeve in extension of its annular rear portion may be substantially on the order of D2 in operation, or expanded to conform to the shape of a connector as described below.

Advantageously, the fixation between the rear portion of the connecting textile sleeve and the front portion of the protective textile sleeve is configured to make it electrically conductive. Thus, electrical power is conducted from the protective textile sleeve to the connecting textile sleeve, including through the first securement region, or from the connecting textile sleeve to the protective textile sleeve.

In one embodiment, the shielding includes a second hollow connecting fabric sleeve having a rest diameter D3, D3 being greater than D1, particularly D3 being about D2 or different from D2. The second connecting fabric sleeve includes a substantially annular rear portion having a rear open end, and the protective fabric sleeve includes a substantially annular rear portion having a rear open end. The shielding device comprises a second electrically conductive fixing area, in particular being at least partially annular, wherein a rear portion of the second connecting textile sleeve and a rear portion of the protective textile sleeve are at least partially fixed in the second electrically conductive fixing area.

The resting diameter D1 is measured on the exterior of the front portion of the protective textile sleeve on the body of the protective textile sleeve projecting from the substantially annular front portion, particularly between the substantially annular front and rear portions.

The resting diameter D2 (or D3) was measured on the connecting fabric sleeve body outside of the substantially annular rear portion, where the substantially annular rear portion was disposed in the first securing region (or second securing region). Thus, in particular, D2 (or D3) is measured between the substantially annular front and rear portions of the (first or second) connecting fabric sleeve.

The (first or second) connecting fabric sleeve includes an interior volume that is open to the interior volume of the protective fabric sleeve.

Preferably, the connecting textile sleeve(s) and/or the at least one protective textile sleeve are configured to radially and reversibly expand such that their resting diameter increases.

The one or more elongate elements are preferably one or more cables and possibly optical fibres.

The connector or connectors to which the elongate elements are connected may have a circular, oval, square, rectangular cross-section, or any other shape required for the desired connection.

The (outer) diameter (D1) of the protective textile sleeve is preferably greater than or equal to 3mm, and less than or equal to 120mm, more preferably greater than or equal to 5mm, and less than or equal to 100 mm.

The (outer) diameter (D2, D3) of the connecting fabric sleeve is preferably greater than or equal to 3mm, and less than or equal to 120mm, more preferably greater than or equal to 20mm, and less than or equal to 100 mm.

The length of the protective textile sleeve is a function of the length of the cable or cables to be protected.

The length of the protective textile sleeve is preferably greater than or equal to 10cm, and less than or equal to 10 meters.

The length of the connecting fabric sleeve is a function of the length of the connector to be partially covered. The length of the connecting textile sleeve is preferably greater than or equal to 3cm, and less than or equal to 50cm, for example less than or equal to 40cm or 15cm, in particular less than or equal to 10 cm.

In an embodiment, the diameter D2 of the connecting textile sleeve is greater than or equal to 1.10 times, preferably 1.20 times, more preferably 1.30 times the diameter D1 of the protective textile sleeve (D2 ≧ 1.10 × D1, preferably D2 ≧ 1.20 × D1, more preferably D2 ≧ 1.30 × D1).

The at least one connecting textile sleeve and the protective textile sleeve are each obtained by mechanically manipulating at least one yarn.

The at least one connecting textile sleeve and the protective textile sleeve each include at least one non-conductive yarn and at least one conductive yarn.

The hollow fabric sleeves each have a substantially tubular shape such that the outer diameter of the hollow fabric sleeve can be measured at rest and therefore in the absence of stress.

The textile sleeve is flexible such that it is collapsible, and the cross-section of the textile sleeve can be substantially deformed in a reversible manner, with or without expansion, to conform to the shape of the elongate elements and the connector.

Preferably, the connecting fabric sleeve has a longitudinal axis L2 and the protective fabric sleeve has a longitudinal axis L1, the connecting fabric sleeve and the protective fabric sleeve being coaxial. Thus, the axes L1 and L2 preferably coincide.

The yarn or yarns (conductive or non-conductive) in this application may be monofilament, fiber spun, or multifilament yarns.

The shielding device can be used in the following fields: aeronautics, automotive, aerospace, railway, marine industries, telecommunications, household appliances, generators and transformers, lighting, in particular for the automotive, aeronautics and railway industries.

The electromagnetic shielding device according to the present application has a function of protecting the cable from external mechanical attacks and electromagnetic interference.

Electromagnetic interference is herein considered to be any interference generated by a source (e.g. a power supply) arranged outside or in an inner part of the shielding (via a cable) which is capable of generating an electrical circuit by electromagnetic induction, electrostatic coupling or conduction or even a combination thereof.

The shielding device thus also protects the external environment of the shielding device from electromagnetic interference that may be emitted by the cable it surrounds.

The frequency of the interference is preferably greater than 0KHz and less than or equal to 2 GHz.

In an embodiment, the shielding device meets the title "metallic communication cable test method-parts 4-3: electromagnetic compatibility (EMC) -Surface transfer impedance-IEC 62153-4-3 for the three-axis method (Metallic communication cable methods-Parts 4-3: Electromagnetic compatibility (EMC) -Surface transfer impedance-Triaxial method) ": 2013(IEC for International Electrotechnical Commission). The method determines the effectiveness of the protection of the shielding by applying predetermined currents and voltages to determine the surface transfer impedance. The method is particularly useful for low frequency electromagnetic interference, i.e. comprised between 0KHz and 100 MHz. Preferably, according to IEC 62153-4-3: the attenuation obtained by the 2013 standard for low frequencies is greater than or equal to 30dB, more preferably greater than or equal to 60 dB.

In an embodiment, the shielding satisfies the title "electromagnetic compatibility (EMC) -parts 4-21: test and measurement techniques-the IEC 61000-4-21:2011(IEC for International electronic Commission) standard for the method of Testing a remixing chamber (EMC) -Parts 4-21: Testing and measurement techniques-reversion chamber methods) ". The method determines the protection efficiency of the shielding in the remixing chamber. This method is particularly useful for high frequency electromagnetic interference, i.e. above 100 MHz.

Preferably, the attenuation of high frequencies obtained according to the IEC 61000-4-21:2011 standard is greater than or equal to 30dB, more preferably greater than or equal to 50 dB.

In an embodiment, the resistivity of the protective textile sleeve and/or the resistivity of the connecting textile sleeve is greater than or equal to 0.1m Ω (milliohm)/meter, and less than or equal to 10m Ω/meter, in particular less than or equal to 5m Ω/meter.

In an embodiment, the shielding device has a force to break of greater than or equal to 1,000 newtons, in particular greater than or equal to 3,000 newtons, more in particular greater than or equal to 5,000 newtons, in particular less than or equal to 100,000 newtons.

In an embodiment, the width of the first fixing area is greater than or equal to 5mm, in particular greater than or equal to 10mm, more in particular less than or equal to 50mm, in particular less than or equal to 30 mm.

In an embodiment, the protective textile sleeve and/or the connecting textile sleeve do not comprise longitudinal openings.

In this context, the resting diameter of the textile sleeve, i.e. the outer diameter of the textile sleeve in the unexpanded state, is understood by not applying any deformation to the textile sleeve.

In this context, the diameter of the textile sleeve in the expanded state, i.e. the outer diameter of the textile sleeve in the expanded state, is understood by applying a radial deformation.

In a variant, the connecting textile sleeve comprises a front portion having a substantially annular front end open end with a resting diameter D2, said front portion being configured to expand radially so as to have, in the expanded condition, a diameter D2 ', a diameter D2' greater than or equal to 1.20 times the diameter D2, preferably greater than or equal to 1.30 times the diameter D2, more preferably greater than or equal to 1.40 times the diameter D2, in particular less than or equal to 1.80 times the diameter D2.

Thus, the annular front portion of the connecting fabric sleeve easily conforms to different shapes of connectors, particularly squares or rectangles.

Preferably, the protective textile sleeve is configured to radially expand so as to have a diameter D1' greater than or equal to a resting diameter D2 in the expanded state.

In a variation, the forward portion of the protective textile sleeve is in a radially expanded state and has a diameter D1' that is substantially equal to the diameter D2 of the connecting textile sleeve.

Preferably, the substantially annular front portion of the protective textile sleeve is in an expanded state in the first fixing region, in particular having an outer diameter greater than D1, in particular about D1'.

Diameter D1' is substantially equal to (outer) diameter D2 within +/-one or both thicknesses of the connecting fabric sleeve.

Advantageously, the protective textile sleeve is configured to radially expand, which facilitates securing the protective textile sleeve to the connective textile sleeve.

In an embodiment, when the shielding device comprises a second connecting textile sleeve, the substantially annular rear portion of the protective textile sleeve is in a radially expanded state in the second fixing region, and in particular has a diameter D1 "greater than or equal to the rest diameter D3 in the expanded state.

This expansion capability of the protective textile sleeve makes it possible to obtain a first fixing zone, for example by overlapping and thus contacting the annular front portion of the protective textile sleeve with the annular rear portion of the connecting textile sleeve, so as to improve the electrical conduction between the two sleeves and thus to improve the maintenance of the electromagnetic shielding effect over the entire length of the shielding device. The same effect applies to the second fixing region when present.

The protective textile sleeve is configured to expand such that the diameter D1' and/or D1 "is greater than or equal to 1.20 times the diameter D2 and/or D3, preferably greater than or equal to 1.30 times the diameter D2 and/or D3, more preferably greater than or equal to 1.40 times the diameter D2 and/or D3, in particular greater than or equal to 1.80 times the diameter D2 and/or D3.

In a variant, the rear portion of the connecting textile sleeve is folded over itself in the first fixing region, in particular substantially U-shaped along a longitudinal section plane P passing through the longitudinal axis L2 of the connecting textile sleeve.

This arrangement makes it possible to have a clear joint between the connecting textile sleeve and the protective textile sleeve that is circular, avoiding any risk of jamming on the path of the shielding. The tear strength of the joint thus formed is also improved compared to a joint where the annular front portion of the protective textile sleeve is to be placed in the unfolded annular rear portion of the connecting textile sleeve.

In particular, the front portion of the protective textile sleeve comprises a single textile layer in the first fixing region, and the rear portion of the connecting textile sleeve comprises two superimposed textile layers, in particular in the first fixing region.

Preferably, the rear portion of the connecting fabric sleeve is folded within its interior volume.

By folding over itself it is understood that the rear portion of the connecting fabric sleeve comprises a folded portion facing the connecting fabric sleeve, either directly against the connecting fabric sleeve or around (i.e. by sandwiching) one or more elements, for example around at least part of the protective fabric sleeve.

In a variant, the rear portion of the connecting textile sleeve comprises an inner portion at least partially fixed to the protective textile sleeve, in particular to the front portion of the protective textile sleeve, and an outer portion superposed on the inner portion and in extension of the inner portion.

The inner and outer portions of the rear portion of the connecting fabric sleeve each include opposing inner and outer surfaces, the outer surfaces being oriented toward the exterior of the interior volume of the connecting fabric sleeve.

The front portion of the protective textile sleeve includes opposing inner and outer surfaces, the inner surface being oriented toward the interior volume of the protective textile sleeve.

Preferably, the inner surface of the inner portion connecting the rear portion of the fabric sleeve is in contact with the outer surface of the front portion of the protective fabric sleeve.

In an embodiment, the outer surface of the inner portion of the rear portion of the connecting fabric sleeve is in contact with the inner surface of the outer portion of the connecting fabric sleeve.

In another embodiment, the outer surface of the inner portion connecting the rear portions of the textile sleeve is in contact with, in particular fixed to, the front portion of the protective textile sleeve, in particular in contact with the outer surface of the protective textile sleeve.

In a variant, the front portion of the protective textile sleeve is folded on itself, in particular in the first fixing region, in particular substantially U-shaped along a plane P of longitudinal section through the longitudinal axis L1 of the protective textile sleeve.

Preferably, the front portion of the protective textile sleeve is folded over the outside of the protective textile sleeve, for example to form an outwardly facing U-shape.

This arrangement allows the front portion of the protective textile sleeve to provide a rounded face that opens into its interior volume and thus avoids damage to the cables disposed within its interior volume.

By folding over itself, it is understood that the front portion of the protective textile sleeve includes a folded portion facing the protective textile sleeve, either directly against the protective textile sleeve or around one or more elements, such as around at least a portion of the connecting textile sleeve.

In a variant, the front portion of the protective textile sleeve comprises an outer portion at least partially fixed to the connecting textile sleeve and an inner portion at least partially covered by and in extension of the outer portion of the front portion of the protective textile sleeve.

In a sub-variant, the outer portion of the front portion of the protective textile sleeve is at least partially secured to the rear portion of the connecting textile sleeve, in particular to the inner portion of the rear portion of the connecting textile sleeve.

In a sub-variation, the interior portion of the front portion of the protective textile sleeve is oriented facing the interior volume of the protective textile sleeve.

In a variant, the front portion of the protective textile sleeve is itself folded at least partially around the portion of the rear portion of the connecting textile sleeve, in particular the inner portion of the connecting textile sleeve.

The inner portion of the rear portion of the connecting fabric sleeve is disposed between the outer and inner portions of the front portion of the protective fabric sleeve.

In a variant, the folded front portion of the protective textile sleeve overlaps the folded rear portion of the connecting textile sleeve.

Preferably, the outer portion of the front portion of the protective textile sleeve and the inner portion of the rear portion of the connecting textile sleeve are disposed between the inner portion of the front portion of the protective textile sleeve and the outer portion of the rear portion of the connecting textile sleeve.

Thus, the folded front portion of the protective fabric sleeve does not partially nest with the folded back portion of the connecting fabric sleeve.

In a variant, the front portion of the protective textile sleeve comprises a front annular edge and the rear portion of the connecting textile sleeve comprises a rear annular edge, the front annular edge of the protective textile sleeve and the rear annular edge of the connecting textile sleeve being arranged in the first fixing region in an edge-to-edge manner without the connecting textile sleeve overlapping the protective textile sleeve.

In another variant, the front portion of the protective textile sleeve overlaps the rear portion of the connecting textile sleeve in a first fixing region.

Preferably, the front portion of the protective textile sleeve and the rear portion of the connecting textile sleeve each comprise a single textile layer.

Preferably, the front portion of the protective textile sleeve is disposed within the connecting textile sleeve in contact with the inner surface of the rear portion of the connecting textile sleeve.

In a variant, the first conductive fixing area comprises three or four textile layers fixed in a conductive manner in their thickness, comprising at least two textile layers protecting the textile sleeve and at least one textile layer connecting the textile sleeve.

Preferably, the outer portion of the rear portion of the connecting textile sleeve is not fixed in its thickness to the front portion of the protective textile sleeve, i.e. to the inner and/or outer portion of the front portion of the protective textile sleeve, and/or to the inner portion of the rear portion of the connecting textile sleeve, in particular in an electrically conductive manner. In particular, the exterior of the connecting textile sleeve does not include any welds.

In one embodiment, the three fixed fabric layers include an outer portion and an inner portion that protect the front portion of the fabric sleeve and an inner portion that connects the rear portions of the fabric sleeve.

In one embodiment, the four fixed fabric layers include an outer portion and an inner portion that protect the front portion of the fabric sleeve and an inner portion and an outer portion that connect the rear portion of the fabric sleeve.

In a variant, the first electrically conductive fixing area is covered by at least a part of the rear portion of the connecting textile sleeve, in particular by an outer part of the rear portion of the connecting textile sleeve.

Advantageously, the outer portion of the rear portion of the connecting textile sleeve is not fixed in its thickness, in particular not welded, to the front portion of the protective textile sleeve, so that the outer portion of the rear portion of the connecting textile sleeve is movable relative to the front portion of the protective textile sleeve.

This arrangement can be found when the connecting textile sleeve has been turned over during the method for manufacturing the shielding device.

This arrangement prevents the weld from opening outside the shielding and wearing the surrounding elements by contact.

In a variation, the protective fabric sleeve is in one or more textiles selected from the group consisting of: a woven fabric, a knitted fabric, a non-woven fabric, or a combination thereof.

In a variation, the connecting fabric sleeve is in one or more textiles selected from the group consisting of: a woven fabric, a knitted fabric, a non-woven fabric, or a combination thereof.

In a variant, the protective textile sleeve and/or the connecting textile sleeve are both tubular knits or tubular knits.

In an embodiment, the protective textile sleeve and/or the connecting textile sleeve are each comprised in the space [ 16; 144), in particular in the interval [ 32; 144] each comprising at least one electrically conductive yarn and/or at least one electrically non-conductive yarn, preferably each comprising at least two electrically non-conductive yarns.

In an embodiment, the number of crossings of the strands per inch of the braided protective fabric sleeve and/or the braided connecting fabric sleeve is greater than 0 and less than or equal to 20, preferably greater than or equal to 5 and less than or equal to 15. The strands may include one or more yarns and are supported by a spindle (corresponding to a spool) on the braiding machine.

In a variant, the protective textile sleeve and/or the connecting textile sleeve each comprise at least one electrically conductive yarn, in particular a monofilament yarn and/or a multifilament yarn and/or a spun fiber yarn, and/or electrically conductive fibers.

The electrically conductive yarn is preferably a monofilament or multifilament yarn.

In embodiments, some or all of the filaments of the conductive monofilament yarn or the conductive multifilament yarn may be each of a core coating type, with a coating in at least one conductive material, such as a sheath, such that the outer coating is conductive. The core is also preferably made of at least one electrically conductive material. In this case, the yarn may be a tin-plated yarn, for example made of tin-plated copper, in particular comprising a copper core and a tin or nickel coating.

In another embodiment, some or all of the filaments of the monofilament or multifilament yarns may each be in at least one electrically conductive material.

Preferably, when the electrically conductive yarn is a multifilament yarn, it comprises 2 to 50 filaments, more preferably 2 to 40 filaments, in particular 4 to 25 filaments, in particular 5 to 20 filaments.

Preferably, each of at least some or all of the filaments of the multifilament yarn has a diameter greater than 0mm and less than or equal to 1mm, more preferably less than or equal to 0.50mm, preferably less than or equal to 0.30mm, in particular about 0.10 mm.

The at least one electrically conductive material is selected from metals, preferably from copper, stainless steel, iron, silver, aluminum and nickel.

In a variant, the protective textile sleeve and/or the connecting textile sleeve each comprise at least one non-conductive yarn, in particular a monofilament yarn and/or a multifilament yarn and/or a fibre spun yarn, and/or a non-conductive fibre.

The electrically non-conductive yarns and/or fibres comprise at least one electrically non-conductive material, in particular at least one synthetic material, in particular at least one polymeric material, in particular at least partially heat-meltable material. This last arrangement facilitates the manufacture of the first electrically conductive fixing area by welding (ultrasound, friction, etc.).

The at least one non-conductive material is preferably selected from the list consisting of: polyesters, in particular polyethylene terephthalate, polybutylene terephthalate; aramids, particularly para-aramid and meta-aramid; polyamides, in particular PA 6-6, PA 4-6, PA 6; polypropylene, polyethylene, in particular high molecular weight polyethylene, polysulfone, carbon (carbon fibers), basalt (basalt fibers), glass (glass fibers) or mixtures thereof.

Preferably, the diameter of the monofilament yarn is greater than 0mm, and less than or equal to 1mm, more preferably less than or equal to 0.50mm, in particular less than or equal to 0.30 mm.

Preferably, the multifilament yarn or the spun fibre has a titer of more than 0dtex and less than or equal to 3,000dtex, more preferably less than or equal to 1,500dtex, in particular less than or equal to 800dtex, in particular greater than or equal to 200dtex and less than or equal to 800dtex, for example about 550dtex to +/-100 dtex.

In a variant, the woven or knitted protective textile sleeve and/or the woven or knitted connecting textile sleeve has an optical coverage greater than or equal to 60% (in particular between 60% and 100%).

Optical coverage was measured on the stationary textile sleeve, outside the conductive anchor area, according to the body of the textile sleeve. The coverage can be measured using the ANSI/SCTE 512007 standard.

In a variant, the protective textile sleeve and the connecting textile sleeve are fixed at least partially in the first fixing region by at least one bonding means selected from: ultrasonic welding, electron beam welding, friction welding, braze welding, stitching with at least one conductive yarn, or a combination thereof (list I), preferably in a manner selected from: ultrasonic welding, friction welding, welding by soldering, stitching with at least one conductive yarn, or a combination thereof (list II).

Ultrasonic welding is preferred because it allows to obtain good electrical conductivity in the first fixing area, as well as good mechanical strength (in particular breaking force) compared to other types of welding.

Alternatively, the joining means comprise a mechanical fixing member, in particular an electrically conductive mechanical fixing member, such as a clamping ring or a fixing member comprising a first fastening member and a second fastening member configured to cooperate together for their closure (reversibly or irreversibly).

The mechanical fixing means may be combined with a combination selected from the above list (list I or list II).

According to a second aspect, the present application relates to a method for manufacturing an electromagnetic shielding device according to any of the preceding variants or embodiments, with reference to the first aspect of the present application, comprising the steps of:

(i) providing a hollow protective fabric sleeve over the at least one expansion device, the hollow protective fabric sleeve having an outer resting diameter D1 and an interior volume configured to receive the one or more elongate elements and comprising a substantially annular front portion having a front open end; in particular, a shaped zone having an outer perimeter (in particular a diameter) greater than or equal to D2; expanding the at least substantially annular front portion of the protective textile sleeve according to an outer periphery (in particular diameter) D1' substantially equal to D2;

(ii) providing a hollow connecting fabric sleeve having a main rest diameter D2 and a substantially annular rear portion, D2 being greater than D1, the substantially annular rear portion having a rear open end, and contacting the rear portion of the connecting fabric sleeve with the front portion of the protective fabric sleeve;

(iii) forming a first electrically conductive fastening area, in particular an at least partially annular fastening area, in which the rear portion of the connecting textile sleeve and the front portion of the protective textile sleeve are at least partially fastened;

(v) a shielding device is obtained.

Preferably, the at least one protective textile sleeve and/or the at least one connecting textile sleeve are manufactured on a knitting or knitting machine. The connecting textile sleeve and the protective textile sleeve are tubular knits or different tubular knits, which make it possible to distinguish their nature and diameter.

This shape is a tool for shaping, in particular expanding, at least the front part of the protective textile sleeve. The at least one area of the shape may have any shape, in particular a conical or rectangular shape, as long as the circumference or circumference of the shape corresponds to the desired extension of the front portion of the protective textile sleeve.

In a variation, step (ii) comprises at least partially overlapping or juxtaposing the front portion of the protective textile sleeve with the rear portion of the connecting textile sleeve.

In a variant, the protective textile sleeve comprises a protective textile body projecting from an annular front portion thereof, and the connecting textile sleeve comprises a connecting textile body projecting from an annular rear portion thereof. During step ii), the rear portion of the sleeve of connecting fabric is superimposed on the front portion of the sleeve of protective fabric at least on the expansion means, in particular on the region of said shape, the front portion of the sleeve of protective fabric being arranged at least between said expansion means, in particular between at least one region of said shape and the rear portion of the sleeve of connecting fabric. During step iii), the protective fabric body and the connecting fabric body are at least partially superposed. The method includes step iv) prior to step v), including inverting the body of the joined fabric sleeve.

In particular, the turning over of the body of the connecting textile sleeve is carried out so that the connecting textile sleeve and the protective textile sleeve are superimposed, in particular only according to the rear portion of the connecting textile sleeve and the front portion of the protective textile sleeve.

In an embodiment, when the rear portion of the connecting textile sleeve at least partially overlaps the front portion of the protective textile sleeve during step ii):

a) the front part of the protective textile sleeve (in particular unfolded on itself) is arranged between the expansion device, in particular at least one region of said shape, and the rear part of the connecting textile sleeve (in particular unfolded on itself); or

b) The front portion of the protective textile sleeve is folded around at least a portion of the connecting textile sleeve, and in particular around the inner portion of the rear portion of the connecting textile sleeve; or

c) The rear portion of the folded protective textile sleeve is at least partially covered by the rear portion of the connecting textile sleeve (in particular not folded over on itself).

Preferably, for arrangement a), the first conductive fixing area comprises two fixing textile layers in a conductive manner in thickness (consisting of two fixing textile layers in a conductive manner in thickness).

Preferably, for arrangements b) and c), the first conductive fixing area comprises three fixing textile layers in a conductive manner in thickness (consisting of three fixing textile layers in a conductive manner in thickness).

Preferably, the first fixing area is covered by a portion of the connecting fabric sleeve, in particular by an outer portion of the rear portion of the connecting fabric sleeve, turned against an outer portion and an inner portion of the front portion of the protective fabric sleeve and against an inner portion of the rear portion of the connecting fabric sleeve.

In a variant, the step of forming the first conductive fixing region is carried out using at least one bonding means selected from: ultrasonic welding, electron beam welding, friction welding, braze welding, stitching with at least one conductive yarn, or a combination thereof (list I), preferably selected from ultrasonic welding, friction welding, welding by braze, stitching with at least one conductive yarn, or a combination thereof (list II).

According to a third aspect, the present application relates to an electrical transmission device comprising at least one connector having a ground area and one or more electrically conductive elongated elements, in particular each configured to transmit electrical signals and/or power, the electrical transmission device comprising an electromagnetic shielding device according to any one of the variants or embodiments of the first aspect of the present application.

In a variant, the front portion of the connecting fabric sleeve is at least partially fixed to the ground area.

The front portion of the connecting fabric sleeve may be secured to the ground area of the connector by welding or preferably by a clamping member such as a clamping link, thereby pressing the conductive inner surface of the front portion of the connecting fabric sleeve against the surface of the ground area.

The variations, embodiments, definitions according to the first, second and third aspect of the present application may be combined independently of each other.

Drawings

The present application will be better understood from reading the following description of embodiments of the application, given by way of non-limiting example, with reference to the accompanying drawings, in which:

fig. 1 shows a first example of a connector connected to two cables;

fig. 2 shows a first example of an electromagnetic shielding device arranged on the connector and cable shown in fig. 1 forming a transmission device according to the present application;

FIG. 3 illustrates a first step of a preferred example of a method for manufacturing the shielding device shown in FIG. 2;

fig. 4 shows a first example of a shielding device obtained after a first step of the manufacturing method schematically represented in fig. 3;

FIG. 5 illustrates steps of a method for manufacturing the shielding device shown in FIG. 2;

FIG. 6 illustrates the first exemplary shielding apparatus of FIG. 2;

fig. 7 shows a first example of a shielding according to plane P of longitudinal section VII-VII shown in fig. 6;

fig. 8 shows a second example of a shielding device according to the present application;

fig. 9 shows a third example of a shielding device according to the present application;

fig. 10 shows a fourth example of a shielding device according to the present application;

fig. 11 shows a fifth example of a shielding device according to the present application; and

fig. 12 illustrates steps of a method of manufacturing the fourth exemplary shielding apparatus illustrated in fig. 10.

Detailed Description

Shielding device

The connector 10 shown in fig. 1 comprises a ground area 15 and two

electrical outputs

17, 18 to which two

elongated elements

20, 21, in particular cables, are connected, which are connected to the

electrical outputs

17, 18.

Fig. 2 shows a first example of a transmission device 30 comprising the connector 10 and the cables (20, 21) shown in fig. 1, and an electromagnetic shielding device 40 according to the present application. The shielding device 40 includes a hollow protective textile sleeve 50 having a main rest diameter D1 and an interior volume configured to receive the

cables

20 and 21. The shielding device 40 also includes a hollow connector fabric sleeve 60 having a rest diameter D2. As shown in FIG. 7, the protective fabric sleeve 50 includes a substantially annular forward portion 52 having a forward open end 54, and the connecting fabric sleeve 60 includes a substantially annular rearward portion 62 having a rearward open end 64. The shielding device 40 comprises a first electrically conductive, in particular at least partially annular, fixing region 70, wherein the rear portion 62 of the connecting textile sleeve 60 and the front portion 52 of the protective textile sleeve 50 are at least partially fixed in the fixing region 70.

The connecting fabric sleeve 60 includes a forward portion 67 having a substantially annular forward open end 69 with a resting diameter D2, the forward portion 67 being configured to radially expand to assume a diameter D2' in the expanded condition that is greater than or equal to 1.40 times the diameter D2 as shown in FIG. 2 to at least partially cover the ground area 15.

The protective textile sleeve 50 is configured to radially expand so as to assume a diameter D1 'in the expanded state, the diameter D1' being greater than or about equal to the resting diameter D2, particularly in the first securement region 70. In fig. 7, to facilitate understanding of the structure of the shielding 40, the diameter D1' appears to be slightly smaller than the diameter D2. In practice, D1' is on the order of D2 in two thicknesses of the connecting fabric sleeve fabric layer. In general, in the figures, the thickness of the welded fabric layer is shown as not being flattened, whereas in practice the welded fabric layer is fixed, in particular welded, the welded fabric layer being substantially flattened.

The rear portion 62 of the connecting fabric sleeve 60 is folded over itself, in particular in the first fixing region 70, in particular substantially U-shaped along the plane P of the longitudinal section VII-VII shown in fig. 6, and passes through the longitudinal axis L2 of the connecting fabric sleeve 60.

The rear portion 62 includes an inner portion 66 at least partially secured to the protective fabric sleeve 50, particularly the front portion 52 thereof, and an outer portion 68 overlying the inner portion 66 and in extension of the inner portion 66. The first fastening area 70 includes the front portion 52 of the protective textile sleeve 50 and the inner portion 66 connecting the rear portion 62 of the textile sleeve 60, the thicknesses of the front and inner portions being fastened in an electrically conductive manner. The first fixed area 70 is covered by the outer portion 68 that connects the rear portion 62 of the fabric sleeve 60 so that the outer portion 68 is able to move relative to the inner portion 66 and the front portion 52.

Protective textile sleeve 50 and connective textile sleeve 60 are each in a hollow tubular braid comprising electrically conductive multifilament yarn and monofilament or multifilament yarn in PET (polyethylene terephthalate). The protective textile sleeve 50 and the body 51 have a diameter D1 of about 30 mm. The protective textile sleeve is configured to expand by at least 30% and is obtained on a knitting machine, each main shaft of the knitting machine supporting two electrically conductive yarns and two electrically non-conductive yarns. The number of crossover points per inch is preferably about 12.

The connecting fabric sleeve 60 and the main body 61 have a diameter D2 of about 40 mm. The connecting textile sleeve is configured to expand by at least 30% and is obtained on a knitting machine, each main shaft of the knitting machine comprising two electrically conductive yarns and two electrically non-conductive yarns. The number of cross points per inch is preferably about 11.

The conductive yarns are multifilament yarns, each yarn comprising 8, or 10, or 16 filaments. Each filament has a diameter of about 0.10 mm. Each filament is made of tin-plated copper, in particular with a tin or nickel coating. The non-conductive yarns are preferably multifilament yarns made of polyethylene terephthalate, each about 550 dtex.

In operation for applications in which the length of the

cables

20, 21 to be protected is about 80cm, their combined external diameter is about 30mm, and the length of the connector to be protected is about 20cm, the external diameter or circumference being about 40mm, the shielding device 40 comprises: a protective textile sleeve 50 having a length of 80cm and a diameter D1 of 30 mm; and a connecting fabric sleeve 60 having a diameter D2 of about 40mm and a length of 20 cm. The mass of the device was 216.6g (i.e., 149.3g for protective textile sleeve 50 and 67.6g for connecting textile sleeve 60).

By comparison, the prior art shielding device comprises a single sleeve of 40mm diameter and 100cm length, which has a mass of 336.5 g. Thus, in this particular example, the shielding device 40 according to the present application advantageously has a mass that is 36% less than the mass of the comparative shielding device.

Fig. 8 shows a second example of a shielding 400 according to the present application, wherein the front portion 520 of the protective textile sleeve 500 comprises a front annular edge 540 and the rear portion 620 of the connecting textile sleeve 600 comprises a rear annular edge 660. The front annular edge 540 of the protective textile sleeve 520 and the rear annular edge 660 of the connecting textile sleeve 600 are disposed edge-to-edge in the first conductive fastening area 700 without overlapping the protective textile sleeve 500 by the connecting textile sleeve 600.

Fig. 9 shows a third example of a shielding device 450 according to the present application, wherein a front portion 820 of a protective textile sleeve 800 overlaps a rear portion 920 of a connecting textile sleeve 900 in a first conductive fixing area 750, the front portion 820 being arranged against an inner surface of the rear portion 920 of the connecting textile sleeve 900.

Fig. 10 shows a fourth example of a shielding device 1000 according to the application, wherein the front portion 1015 of the protective textile sleeve 1010 is folded over itself to the outside. The folded front 1015 has a substantially U-shape along a longitudinal cross-sectional plane P through a longitudinal axis L1 of a protective textile sleeve 1010 having a diameter D1. The front portion 1015 of the protective textile sleeve 1010 is folded about the interior 1025 of the rear portion 1030 of the connecting textile sleeve 1035. The rear portion 1030 of the connecting fabric sleeve 1035 is also folded upon itself, particularly toward the interior of its interior volume 1037, around the exterior 1040 of the front portion 1015 of the protective fabric sleeve 1010. Thus, the front portion 1015 of the protective fabric sleeve 1010 includes overlapping inner 1045 and outer 1040 portions. The rear portion 1030 of the connecting fabric sleeve 1035 includes an inner portion 1025 and an outer portion 1050 that are also stacked. Inner portion 1045 and outer portion 1040 of forward portion 1015 of protective textile sleeve 1010 are substantially annular and are at least partially secured in an electrically conductive manner, particularly by ultrasonic waves, to substantially annular inner portion 1025 of rearward portion 1030 of protective textile sleeve 1035.

This variant makes it possible to incorporate a mechanically resistant weld and to improve the protection, in particular the protection against wear, of the elongated elements arranged in the inner volume of the protective textile sleeve and possibly of the elongated elements arranged in the inner volume of the connecting textile sleeve. In effect, the front portion of the protective textile sleeve provides an end that is open to its circular interior volume. The same effect can be obtained for surrounding elements that are arranged outside the shielding 1000 and that are in contact with the rounded surface of the rear part of the folded connecting fabric sleeve 1035. Thus, the first conductive fixing area 1020 includes three fabric layers: the thicknesses or layers obtained from inner 1045 and outer 1040 portions of protective fabric sleeve 1010 and inner 1025 portion of connecting fabric sleeve 1035, and the inner 1045 and outer 1040 portions of protective fabric sleeve 1010 and inner 1025 portion of connecting fabric sleeve 1035 are laminated and secured together at their thicknesses using bonding means obtained from the sleeves themselves, such as by welding or ultrasonic bonding. The first fastening area 1020 is covered by a portion of the connecting fabric sleeve 1035, particularly the outer portion 1050.

Alternatively, the first fixing area may comprise four fabric layers, the thicknesses of which are fixed to each other: portions of inner 1045 and outer 1040 of protective textile sleeve 1010 and portions of inner 1025 and outer 1050 of connecting textile sleeve 1035 are secured to one another, such as by ultrasonic welding. In this case, the method of manufacture does not include inverting the body of the sleeve to which the fabric is attached. The rear part of the connecting textile sleeve and the front part of the protective textile sleeve are superposed according to their final arrangement in the shielding and then fixed in an electrically conductive manner.

Fig. 11 shows a fifth variant of an embodiment of a shielding device 1100 according to the present application, the shielding device 1100 comprising a protective textile sleeve 1110 having a diameter D1 and a connecting textile sleeve 1150 having a diameter D2. The front portion 1115 of protective textile sleeve 1110 is folded upon itself toward the outside of protective textile sleeve 1110 and includes overlapping inner 1120 and outer 1125 portions. The rear portion 1155 of the connecting fabric sleeve 1150 is also folded upon itself within its interior volume and includes overlapping inner 1160 and outer 1165 portions. The front portion 1115 of the folded protective textile sleeve 1110 overlies the rear portion 1155 of the folded connecting textile sleeve 1150. In this particular example, the inner portion 1160 of the connecting fabric sleeve 1150 and the outer portion 1125 of the protective fabric sleeve 1110 are disposed between the outer portion 1165 of the connecting fabric sleeve and the inner portion 1120 of the protective fabric sleeve. The

inner portions

1160 and 1120 and the outer portion 1125 are secured to each other using bonding means, in particular bonding means obtained from the sleeve itself, for example by ultrasonic welding, so as to form a first conductive securing area 1170 comprising three textile layers. The first conductive region 1170 is covered by a portion of the connecting fabric sleeve 1150, particularly the outer portion 1165, and is not particularly secured to the first conductive securing region 1170. Alternatively, the first conductive securing area 1170 may comprise four overlying textile layers secured to one another in a conductive manner by welding the outer portion 1165 and the

portions

1160, 1125, and 1120 together. In this case, the method of manufacture does not include inverting the body of the sleeve to which the fabric is attached. The rear part of the connecting textile sleeve and the front part of the protective textile sleeve are superposed according to their final arrangement in the shielding and then fixed in an electrically conductive manner.

Method for producing a shielding device

The shielding device 40 is preferably manufactured according to the manufacturing method described below with reference to fig. 3 to 6. The method first includes the step of disposing the hollow protective textile sleeve 50 over at least one region 80 of the shape 90, said region 80 having an outer perimeter corresponding to an outer diameter Dr greater than or equal to D2, thereby resulting in expansion of the at least substantially annular front portion 52 according to a diameter D1' substantially equal to D2. The protective textile sleeve 50 comprises a protective textile body 51 projecting from an annular front portion 52 thereof, and the connecting textile sleeve 60 comprises a connecting textile body 61 projecting from an annular rear portion 62 thereof, said protective and connecting textile bodies (51, 61) being superimposed substantially as shown in figures 3 and 4. The method then includes the step of bonding the hollow connecting fabric sleeve 60 to the front portion 52 of the connecting fabric sleeve 50. In particular, the rear portion 62 of the connecting fabric sleeve 60 is superposed on the front portion 52 such that the front portion 52 is disposed between the at least one region 80 of the shape 90 and the rear portion 62 of the connecting fabric sleeve 62. The method then comprises the step of forming a first electrically conductive fixing area 70, in particular an at least partially annular, in which first electrically conductive fixing area 70 the rear portion 62 of the connecting textile sleeve 60 and the front portion 52 of the protective textile sleeve 50 are at least partially fixed. The first conductive fastening area 70 is preferably formed using at least one bonding means selected from the group consisting of: ultrasonic welding, electron beam welding, friction welding, brazing welding, stitching with at least one conductive yarn, or a combination thereof, preferably using ultrasonic welding. This type of combination makes it possible to form a fixing area that is resistant to tearing and also has perfect conductivity, so that the shielding effect is constant along the shielding device 40. The method finally comprises the step of turning over the main body 61 of the connecting textile sleeve 60, as shown in fig. 5, so that the connecting textile sleeve 60 and the protective textile sleeve 50 are superposed, in particular only in the first conductive fixing areas 70.

In operation, the body 51 of the protective textile sleeve 50, which has a diameter adapted to the

cables

20, 21, comprises the body in its inner volume without expansion, thus maintaining its shielding and protection characteristics against external mechanical attacks. The connecting fabric sleeve 60 is secured to the protective fabric sleeve 50 by a conductive first securing area 70. The annular front portion 67 of the connecting fabric sleeve 60 may also be expanded according to a diameter or circumference D2' so as to at least partially perfectly cover the ground contact area 15. Preferably, the front portion 67 is held in contact with the ground area 15 by a snap ring or adhesive surrounding the connector and the front portion 67.

The shielding device 40 according to the present application therefore has dimensions that differ over its length, on the one hand for the cable and on the other hand for the connector, which makes it possible to optimize its mass. In addition, in operation, the body 61 is not deformed and therefore retains its shielding properties. Thus, the shielding device 40 better holds the cable to be protected, since the protective textile sleeve is adjusted, so that the cable does not move in the protective textile sleeve. In addition, since the protective textile sleeve is less bulky than the connecting textile sleeve, the shielding device has a reduced volume and is therefore less bulky. This arrangement is particularly advantageous when the screening device is equipped, for example, with an electric or hybrid vehicle to reduce the space requirement of the engine space to free up volume for other requirements.

The steps of the method for manufacturing the shielding device 1000 are shown in fig. 12.

(i) First a hollow protective textile sleeve 1010 is provided, the hollow protective textile sleeve 1010 having an outer rest diameter D1 and an inner volume 1005, the inner volume 1005 being configured to accommodate one or more elongated elements and comprising a substantially annular front portion 1015 with an open front end on at least one expansion device (not shown) such that the at least substantially annular front portion 1015 of the protective textile sleeve 1010 is expanded along an outer circumference D1' substantially equal to D2. (ii) A hollow connecting fabric sleeve 1035 is provided, the hollow connecting fabric sleeve 1035 having a major rest diameter D2 greater than D1, and a substantially annular rear portion 1030 having a rear open end. The rear portion 1030 of the connecting fabric sleeve 1035 is in contact with the front portion 1015 of the protective fabric sleeve 1010 such that the front portion 1015 of the protective fabric sleeve 1010 folds outwardly and around the interior 1025 of the rear portion 1030 of the connecting fabric sleeve 1035. Then, (iii) a first electrically conductive fixing area 1020, in particular an at least partially annular fixing area 1020, is formed, wherein a rear portion 1030 of the connecting textile sleeve 1035 and a front portion 1015 of the protective textile sleeve 1010 are at least partially fixed in the fixing area 1020. The protective fabric sleeve 1010 includes a protective fabric body 1008 protruding from an annular front portion 1015 thereof, and the connecting fabric sleeve 1035 includes a connecting fabric body 1032 protruding from an annular rear portion 1030 thereof, as shown in fig. 12. During step ii), the rear portion 1032 of the connecting fabric sleeve 1035 at least partially overlaps the front portion 1015 of the protective fabric sleeve 1010 on at least the expansion device, the front portion 1015 of the protective fabric sleeve 1010 being disposed between the at least the expansion device and the rear portion 1030 of the connecting fabric sleeve 1035. The protective fabric sleeve 1010 includes a protective fabric body 1008 protruding from an annular front portion 1015 thereof, and the attachment fabric sleeve 1035 includes a textile attachment body 1032 protruding from an annular rear portion 1035 thereof. During step iii), the protective fabric body 1008 and the connecting fabric body 1032 at least partially overlap. The method then includes (iv) inverting (iv) the body 1032 of the connecting fabric sleeve 1035 so that the connecting fabric sleeve 1035 and the protecting fabric sleeve 1010 overlap, particularly only overlap, according to the back portion 1030 of the connecting fabric sleeve 1030 and the front portion 1015 of the protecting fabric sleeve 1010.

It should be noted that for the manufacture of the device 1100 shown in fig. 11, the above-described method is similar, the only difference being that the front portion 1115, which is folded towards the outside, at least partially overlaps the unfolded rear portion of the connecting textile sleeve, and in particular the interior of the rear portion of the connecting textile sleeve, when the sleeve 1110 and the sleeve 1150 are in contact.

Claims

1. An electromagnetic shielding device (40, 400, 450, 1000, 1100) comprising:

a. at least one hollow protective textile sleeve (50, 500, 800, 1010, 1100) having a main rest diameter D1 and an inner volume configured to accommodate one or more elongated elements (20, 21),

b. at least one hollow connecting fabric sleeve (60, 600, 900, 1035, 1150) having a resting diameter D2, D2 being greater than D1,

characterized in that said protective textile sleeve (50, 500, 800, 1010, 1100) comprises a substantially annular front portion (52, 520, 820, 1015, 1115) having a front open end (54), said connecting textile sleeve (60, 600, 900, 1035, 1150) comprises a substantially annular rear portion (62, 620, 920, 1030, 1155) having a rear open end (64), said electromagnetic shielding device (40, 400, 450, 1000, 1100) comprises a first electrically conductive fixing area (70, 700, 750, 1170, 1020), said first electrically conductive fixing area (70, 700, 750, 1170, 1020) being in particular at least partially annular, in said first electrically conductive fixing area (70, 700, 750, 1170, 1020) a rear portion (62, 620, 920, 1030, 1155) of said connecting textile sleeve (60, 600, 900, 1035, 1150) and a front portion (52, 920, 1030, 1155) of said protective textile sleeve (50, 500, 800, 1010, 1100), 520. 820, 1015, 1115) is at least partially fixed.

2. Electromagnetic shielding device (40, 400, 450, 1000, 1100) according to claim 1, characterized in that said connecting fabric sleeve (60, 600, 1030, 1150) comprises a front portion (67), said front portion (67) comprising a substantially annular front end open end (69) having a rest diameter D2, said front portion (67) being configured to be radially expanded so as to have a diameter D2 'in an expanded state, said diameter D2' being greater than or equal to 1.20 times the diameter D2.

3. Electromagnetic shielding device (40, 400, 450, 1000, 1100) according to any one of claims 1 and 2, characterized in that the front portion (52, 520, 1015, 1115) of the protective textile sleeve (50, 500, 1010, 1110) is in an expanded state and has a diameter D1 ', the diameter D1' being substantially equal to the diameter D2 of the connecting textile sleeve (60, 600, 1035, 1150).

4. Electromagnetic shielding device (40, 1000, 1100) according to any one of claims 1 to 3, characterized in that said rear portion (62, 1035, 1155) of said connection fabric sleeve (60, 1030, 1150) is folded on itself, in particular substantially U-shaped along a longitudinal cross-sectional plane P passing through a longitudinal axis L2 of said connection fabric sleeve (60, 1030, 1150).

5. Electromagnetic shielding device (40, 1000, 1100) according to claim 4, characterized in that the rear portion (62, 1155, 1030) of the connecting fabric sleeve (60, 1035, 1150) comprises an inner portion (66, 1160, 1025) and an outer portion (68, 1050, 1165), the inner portion (66, 1160, 1025) being at least partially fixed to the protective fabric sleeve (50, 1010, 1110), in particular to the front portion (52, 1015, 1115) of the protective fabric sleeve (50, 1010, 1110), the outer portion (68, 1050, 1165) being superimposed on the inner portion (66, 1025, 1160) and in extension of the inner portion (66, 1025, 1160).

6. Electromagnetic shielding device (1000, 1100) according to any one of claims 1 to 5, characterized in that the front portion (1015, 1115) of the protective textile sleeve (1010, 1110) is folded on itself, in particular substantially U-shaped along a plane P of longitudinal section through a longitudinal axis L1 of the protective textile sleeve (1010, 1110).

7. Electromagnetic shielding device (1000, 1100) according to claim 6, characterized in that said front portion (1015, 1115) of said protective textile sleeve (1010, 1110) comprises an outer portion (1040, 1125) and an inner portion (1045, 1120), said outer portion (1040, 1125) being at least partially fixed to said connecting textile sleeve (1035, 1150), said inner portion (1045, 1120) being at least partially covered by said outer portion (1040, 1125) of said front portion (1015, 1115) of said protective textile sleeve (1010, 1110) and in extension of said outer portion (1040, 1125).

8. Electromagnetic shielding device (1000) according to any of claims 6 and 7, characterized in that the front portion (1015) of the protective textile sleeve (1010) is folded over itself at least partially around the portion (1025) of the rear portion (1030) of the connecting textile sleeve (1035), in particular around the inner portion (1025) of the connecting textile sleeve (1035).

9. Electromagnetic shielding device (1100) according to any one of claims 6 and 7, characterized in that the folded front portion (1115) of the protective textile sleeve (1110) overlaps the folded rear portion (1155) of the connecting textile sleeve (1150).

10. The electromagnetic shielding device (400) according to any one of claims 1 to 3, wherein the front portion (520) of the protective textile sleeve (500) comprises a front annular edge (540) and the rear portion (620) of the connecting textile sleeve (600) comprises a rear annular edge (660), the front annular edge (540) of the protective textile sleeve (500) and the rear annular edge (660) of the connecting textile sleeve (600) being arranged in the first electrically conductive fixing region (700) in an edge-to-edge manner, wherein the protective textile sleeve (500) does not overlap the connecting textile sleeve (600).

11. Electromagnetic shielding device (40, 450, 1000, 1100) according to any one of claims 1 to 5, characterized in that the front portion (52, 820, 1015, 1115) of the protective textile sleeve (50, 800, 1010, 1100) overlaps the rear portion (62, 920, 1030, 1155) of the connecting textile sleeve (60, 900, 1035, 1150) in the first electrically conductive fixing area (750, 1020, 1170).

12. Electromagnetic shielding device (40, 450, 1000, 1100) according to any one of claims 1 to 11, characterized in that the first electrically conductive fixing area (70, 920, 1020, 1170) comprises three or four fabric layers fixed in an electrically conductive manner in their thickness, comprising at least two fabric layers (1040, 1045; 1120, 1125) of the protective fabric sleeve (50, 800, 1010, 1110) and at least one textile layer (1025; 1160) of the connecting fabric sleeve (60, 900, 1035, 1150).

13. Electromagnetic shielding device (40, 400, 450, 1000, 1100) according to any of claims 1 to 12, characterized in that the protective textile sleeve (50, 500, 800, 1010, 1110) is in one or more textiles selected from a braid, a woven textile, a knitted textile, a non-woven textile or a combination thereof.

14. Electromagnetic shielding device (40, 400, 450, 1000, 1100) according to any one of claims 1 to 13, characterized in that the connecting fabric sleeve (60, 600, 900, 1035, 1150) is in one or more fabrics selected from a braid, a woven fabric, a knitted fabric, a non-woven fabric or a combination thereof.

15. Electromagnetic shielding device (40, 400, 450, 1000, 1100) according to any one of claims 1 to 14, characterized in that the protective textile sleeve (50, 500, 800, 1010, 1110) and/or the connecting textile sleeve (60, 600, 900, 1035, 1150) are each a tubular braid or a tubular knit.

16. Electromagnetic shielding device (40, 400, 450, 1000, 1100) according to any one of claims 1 to 15, characterized in that the protective textile sleeve (50, 500, 800, 1010, 1110) and/or the connecting textile sleeve (60, 600, 900, 1035, 1150) each comprise at least one electrically conductive yarn and/or electrically conductive fibers.

17. Electromagnetic shielding device (40, 400, 450, 1000, 1100) according to any one of claims 1 to 16, characterized in that the protective textile sleeve (50, 500, 800, 1010, 1110) and/or the connecting textile sleeve (60, 600, 900, 1035, 1150) each comprise at least one electrically non-conductive yarn and/or electrically non-conductive fibers.

18. Electromagnetic shielding device (40, 400, 450, 1000, 1100) according to any one of claims 1 to 17, characterized in that the protective textile sleeve (50, 500, 800, 1010, 1110) and the connection textile sleeve (60, 600, 900, 1035, 1150) are at least partially fixed in the first electrically conductive fixing area (70, 700, 750, 1020, 1170) by at least one bonding means selected from the list consisting of: ultrasonic welding, electron beam welding, friction welding, braze welding, stitching with at least one conductive yarn, and combinations thereof.

19. A method for manufacturing an electromagnetically shielding device (40, 400, 450, 1000, 1100) as claimed in any one of claims 1 to 18, characterized in that it comprises the steps of:

(i) providing a hollow protective textile sleeve (50, 500, 800, 1010, 1110) on at least one expansion device, said protective textile sleeve (50, 500, 800, 1010, 1110) having an outer rest diameter D1 and an inner volume configured to accommodate one or more elongate members, and said protective textile sleeve (50, 500, 800, 1010, 1110) comprising a substantially annular front portion (52, 520, 820, 1015, 1115) having a front open end, thereby causing expansion of at least said substantially annular front portion (52, 520, 820, 1115, 1015) of said protective textile sleeve (50, 500, 800, 1010, 1110) according to an outer diameter D1' substantially equal to D2;

(ii) providing a hollow connecting fabric sleeve (60, 600, 900, 1035, 1150), said connecting fabric sleeve (60, 600, 900, 1035, 1150) having a main rest diameter D2 and a substantially annular rear portion (62, 620, 920, 1030, 1155), said main rest diameter D2 being greater than said outer rest diameter D1, said substantially annular rear portion (62, 620, 920, 1030, 1155) having a rear open end; contacting the rear portion (62, 620, 920, 1030, 1155) of the connecting fabric sleeve (60, 600, 900, 1035, 1150) with the front portion (52, 520, 820, 1015, 1115) of the protective fabric sleeve (50, 500, 800, 1010, 1110);

(iii) forming a first conductive fixing area (70, 700, 750, 1020, 1170), in particular at least partially annular, in which a rear portion (62, 620, 920, 1030, 1155) of the connecting textile sleeve (60, 600, 900, 1035, 1150) and a front portion (52, 520, 820, 1015, 1115) of the protective textile sleeve (50, 500, 800, 1010, 1110) are at least partially fixed;

(v) obtaining the shielding device (40, 400, 450, 1000, 1100).

20. The method of manufacturing of claim 19, wherein step (ii) comprises: at least partially overlapping or juxtaposing a front portion (52, 520, 820, 1015, 1115) of the protective fabric sleeve (50, 500, 800, 1010, 1110) with a rear portion (62, 620, 920, 1030, 1155) of the attachment fabric sleeve (60, 600, 900, 1035, 1150).

21. A manufacturing method according to any one of claims 19 and 20, wherein the protective textile sleeve (50, 1010) comprises a protective textile body (51, 1008) protruding from an annular front portion (52, 1015) thereof, and the connecting textile sleeve (60, 1035) comprises a connecting textile body (61, 1032) protruding from an annular rear portion (62, 1030) thereof; characterized in that, during step (ii), at least on the expansion device, the rear portion (62, 1030) of the connecting textile sleeve (60, 1035) is at least partially superimposed on the front portion (52, 1015) of the protective textile sleeve (50, 1010), the front portion (52, 1015) of the protective textile sleeve (50, 1010) being arranged between at least the expansion device and the rear portion (62, 1030) of the connecting textile sleeve (60, 1035); characterised in that, during step (iii), the protective fabric body (51, 1008) and the connecting fabric body (61, 1032) are at least partially superposed; and characterized in that the method comprises a step (iv) prior to step v), step (iv) comprising inverting the connecting fabric body (61, 1032) of the connecting fabric sleeve (60, 1035).

22. Method for manufacturing a shielding device according to any one of claims 19 to 21, characterized in that the step of forming the first fixing area (70, 700, 750, 1020, 1170) is performed using at least one joining means selected from the list consisting of: ultrasonic welding, electron beam welding, friction welding, welding by brazing, stitching with at least one conductive yarn, and combinations thereof.

23. An electrical transmission device (30) comprising at least one connector (10) having a ground area (15) and one or more electrically conductive elongate elements (20, 21), each of the one or more electrically conductive elongate elements (20, 21) being configured to transmit electrical signals and/or power, the electrical transmission device (30) comprising an electromagnetic shielding device (40, 400, 450, 1000, 1100) according to any one of claims 1 to 18.

24. The electrical transmission device (30) of claim 23, wherein a front portion (67, 1015, 1115) of the connecting fabric sleeve (60, 600, 900, 1035, 1150) is at least partially secured to the ground area (15).