Electromagnetic shielding body for a connector for transmitting electrical and / or data and / or radio frequency signals, comprising radialy flexible legs with two different profiles, one of which has a boss designed to form an electrical contact point

Abstract

The invention relates to an electrically conductive body (10) with longitudinal axis (X), forming an electromagnetic shielding body for a connector (1) for transmitting electrical and / or data and / or radio frequency (RF) signals, housing at least one central contact intended to be connected to a cable wire, comprising a housing for housing and retaining an electrical insulating block (11), and, on its outer periphery, at least two different strips (100, 102) extending along the longitudinal axis (X) and whose longitudinal section profiles are different from each other, one of the two strips (100) comprising at least one boss (101) projecting outwards, to form an electrical contact point, the other of the two strips (102) being devoid of a boss on the outside, the two strips being connected to each other at each of their longitudinal ends by a peripheral strip (104, 105).

Description

Domaine technique

[0001] The present invention relates to the field of electrical and / or data transmission connectors.

[0002] It relates more specifically to an electromagnetic shielding body for a connector in which each central contact is connected, preferably crimped to a bare end of electrical cable wire.

[0003] The invention applies in particular to data transmission connectors using cables comprising one wire, one pair of wires or several pairs of shielded or unshielded transmission wires.

[0004] The invention applies more generally to any type of electrical and / or data transmission connector and / or radio frequency (RF) signal connector, including coaxial connectors comprising a single central conductor.

[0005] An interesting application is automotive connectivity. Technique antérieure

[0006] In the field of electrical and / or data and / or radio frequency (RF) signal transmission connectors, RF connectors with electrical insulating blocks are known, in which one or more central contacts are housed, possibly pre-assembled, each crimped or intended to be crimped around a bare end of an electrical cable wire.

[0007] French patent FR3074616B1 discloses a connector of this type with a pre-assembled sub-assembly, which is illustrated in the figure 1 .

[0008] The pre-assembled connector sub-assembly 1 is intended to be connected and mounted on a cable 2 with wires insulated from each other.

[0009] Subassembly 1 comprises a metallic body 10 produced by cutting and rolling, forming an electromagnetic shielding or grounding body, which can usually be referred to as a grounding contact.

[0010] This shielding body 10 retains within it an electrical insulating block 11 inside which are inserted central contacts 12, 13 comprising crimp end portions 14, 15 which extend by being offset in projection towards the rear of the insulating block 11. The central contacts 12, 13 are electrically isolated from the shielding body 10 by means of the electrical insulating block 11.

[0011] These end portions 14, 15 of the central contacts 12, 13 are crimped around the bare ends of the wire cores of an electrical cable.

[0012] This crimping can take place before or after the central contacts 12, 13 are inserted inside the insulating block 11 in a reference position which must be as precise as possible with respect to the subassembly comprising the shielding body and the insulator.

[0013] The shielding body 10 includes flexible tabs or strips 100 forming electrical ground tabs, distributed around its periphery at the front, parallel to each other.

[0014] Each of the lugs 100 has a boss 101 projecting outwards, which makes electrical contact with an electrically conductive body forming an electromagnetic shield of a complementary connector.

[0015] Several shapes, arrangements and configurations of lamellae have been proposed for a shielding body of a connector.

[0016] Patent application EP3783754A1 discloses a grounding element with flexible strips distributed around its periphery. Each strip has an electrical contact point to establish an electrical connection with the complementary grounding contact once the complementary connectors are mated. The strips in the first group each have one free end and one fixed end, while those in the second group each have two fixed ends. The numerous electrical contact points generate a high coupling force between the connectors, especially since the strips in the second group have inwardly oriented U or V shapes that contact the insulation. This adds stress during mating and thus an additional force.To limit this high coupling force, the lamellae in the first group, due to their free end, allow for a lower coupling force compared to the lamellae in the second group, but at the cost of increased fragility. Furthermore, the profile of the lamellae in the second group is particularly complex to manufacture, with an inward fold and an outward stamping.

[0017] US patent 10224659B2 discloses a grounding body comprising several series of strips distributed around its periphery, each strip having an external boss as an electrical contact point with a complementary grounding body. To reduce the coupling forces generated by the concomitant deformation of the bosses, this patent proposes axially offsetting some of the bosses relative to others. At the start of coupling, this implies recentering by only two diametrically opposed bosses, which can lead to a lack of coaxiality between the two complementary connectors. Furthermore, in patent EP4193427B1, the strips serve to recenter the electrical insulation housed within the grounding body when the latter is inserted into the complementary connector.The coupling forces are therefore rather increased due to the rigidity of the slats placed against both the complementary mass body and the insulator to be recentered.

[0018] Thus, grounding bodies, and more generally electromagnetic shielding bodies for connectors according to the state of the art, present a major drawback: high coupling forces due to the presence and deformation of multiple contact points in the form of bosses that contact the grounding body of the complementary connector. This phenomenon is accentuated for grounding bodies where the strips bearing the contact bosses are fixed at both ends to a cylindrical portion of the body, because their intrinsic rigidity is increased, and consequently, so are the contact forces.

[0019] There is therefore a need to further improve the mass bodies, more generally electromagnetic shielding, and connectors, particularly in order to reduce coupling forces with complementary connectors.

[0020] The invention aims to meet all or part of this need. Exposé de l'invention

[0021] To this end, the invention relates, according to one of its aspects, to an electrically conductive body with a longitudinal axis (X), forming an electromagnetic shielding body for a connector for transmitting electrical and / or data and / or radio frequency (RF) signals, housing at least one central contact intended to be connected to a cable wire, comprising a housing for housing and maintaining an electrical insulating block, and, on its outer periphery, at least two different strips extending along the longitudinal axis (X) and whose longitudinal section profiles are different from each other, one of the two strips comprising at least one boss projecting outwards, to form an electrical contact point, the other of the two strips being devoid of a boss on the outside, the two strips being connected to each other at each of their longitudinal ends by a peripheral strip.

[0022] Advantageously, the at least two strips with different profiles have an identical neutral fiber length. For the purposes of this invention, "neutral fiber" refers to the portion of the material thickness that does not undergo elongation or shortening during material deformation, for example, by bending or folding. A difference in neutral fiber length between the strips can introduce deformations of the shielding / grounding body during its manufacturing operations by forming (stamping of bosses, rolling of the body) and during the coupling of the body with that of a complementary connector, where the coupling forces introduce irregular deformations of the shielding / grounding body. Therefore, an identical neutral fiber length, within manufacturing tolerances, prevents these deformations.

[0023] According to an advantageous feature, the peripheral band connecting the front longitudinal ends is provided with at least one longitudinal slot.

[0024] According to an advantageous embodiment, the armor body comprises more than two slats, the different slats being distributed alternately on the outer periphery of the body.

[0025] According to an advantageous embodiment, the other of the two slats without an outward-facing boss includes an inward-facing boss.

[0026] Advantageously, the boss projecting inwards is arranged substantially at the same longitudinal dimension or offset longitudinally relative to the boss projecting outwards.

[0027] Advantageously, the boss projecting outwards, and where applicable the boss projecting inwards, is (are) of cylindrical cross-section and / or spherical longitudinal section.

[0028] According to an advantageous embodiment, the other of the two slats without an outward-facing boss comprises a flat surface projecting outwards with a transverse dimension lower than the outward-facing boss.

[0029] Preferably, the armor body is a single piece, preferably made by cutting and rolling.

[0030] Preferably, the material used to make the shielding body is chosen from copper, a copper alloy, or stainless steel.

[0031] The armor body can have a circular or oblong cross-section.

[0032] The invention also relates to a connector subassembly comprising: at least one central contact, intended to be connected, preferably crimped to the end of a wire of an electrical cable, an electrical insulating block comprising at least one cavity into which the central contact is inserted, an electromagnetic shielding body as described above, the housing of which accommodates and retains the electrical insulating block.

[0033] The invention also relates to a connector, comprising: at least one subassembly as described above, a housing, preferably made of electrically insulating material in which the subassembly is housed and fixed.

[0034] The invention also relates to a method for producing an electrically conductive body forming an electromagnetic shielding body for a connector for transmitting electrical and / or data and / or radio frequency (RF) signals, housing at least one central contact intended to be connected to a cable wire, the method comprising the following steps: i / supply of a flat metal strip; ii / cutting flat slots, each defining a space between two adjacent slats; iii / forming at least one first slat comprising a boss intended to protrude outwards from the body; iv / forming at least one second slat having a longitudinal cross-section profile different from that of the first slat, which lacks a boss, and preferably having a neutral fiber length identical to that of the first slat; v / rolling around the longitudinal axis of the metal strip to form the body; steps iii / and iv / can be carried out simultaneously or sequentially, in any order.

[0035] Thus, the invention essentially consists of an electromagnetic / ground shielding body of a connector with at least one central contact, with at least two strips of different profile of longitudinal section, one of which includes a boss projecting outwards which is intended to constitute an electrical contact point with the shielding / ground body of an external connector.

[0036] The other of the two strips is devoid of a boss designed to form an electrical contact point.

[0037] By reducing the number of electrical contact protrusions compared to a shielding / grounding body according to the prior art, in which all the strips have an electrical contact protrusion, the coupling forces between complementary connectors are reduced. And with the same number of strips, the electromagnetic shielding induced by the body according to the invention is preserved.

[0038] Furthermore, by making different strips but with an identical fiber length, the risk of deformation of the shielding body is avoided during the forming operations (stamping of the bosses, rolling of the contact body) to make it and during its coupling with a complementary connector ground body.

[0039] Thus, the advantages of the invention compared to state-of-the-art connector shielding bodies are numerous, including: a reduction in coupling forces between a connector comprising a shielding body according to the invention and a complementary connector; a homogeneity of contact forces due to the outwardly oriented bosses, because during coupling the body deforms homogeneously due to the alternation of the two different blade profiles; a better microwave performance by optimizing the distances for electrical impedance, induced by the alternation of different blades, respectively closer and further from the central connector contact; a reduction of the gap between the shielding / ground body and the electrical insulating block of the connector, without pressure on the insulating block of the blade(s) without an external boss, whether the connector is coupled or not;Increased manufacturing quality is achieved through the homogeneity of shapes obtained by using the same neutral fiber for all the strips, which allows for better rolling of the body during its manufacture.

[0040] Other advantages and features of the invention will become clearer upon reading the detailed description of examples of implementation of the invention given by way of illustration and not limitation with reference to the following figures. Brève description des dessins

[0041] [ Fig 1 ] there figure 1 represents, in perspective view, an example of a subassembly of a crimp-type center contact connector comprising an electromagnetic shielding body according to the state of the art. Fig 2 ] there figure 2 is a perspective view of a center-contact coaxial connector subassembly comprising an electromagnetic shielding body of the invention and a cable, in a crimped configuration of the cable onto the ferrule and the center contact of the subassembly. Fig 3 ] there figure 3 is a perspective view of another single-contact coaxial connector subassembly comprising an electromagnetic shielding body of the invention and a cable, in a crimped configuration of the cable on the ferrule and the center contact of the subassembly. Fig 4 ] there figure 4 is an exploded view of the figure 2 in pre-crimping configuration. Fig 5 ] there figure 5 is another perspective view of the figure 2 . [ Fig 6 ] there figure 6 is a front view of a subassembly of a coaxial connector with a center contact comprising an electromagnetic shielding body of the invention and a cable, in a crimped configuration of the cable onto the ferrule and the center contact of the subassembly. Fig 6A], [Fig 6B], [Fig 6C ] THE figures 6A, 6B, 6C are longitudinal section views respectively along AA, BB, CC of the figure 6 . [ Fig 7 ] there figure 7 is a side view of an electromagnetic shielding body according to the invention. Fig 7F ] there figure 7F is a cross-sectional view according to FF of the figure 7 . [ Fig 8 ] there figure 8 is a cross-sectional view according to FF of the figure 7 showing a connector with a shielding body according to the invention, highlighting the different distances between the blades and the central contact. Fig 9 ] there figure 9 is a longitudinal cross-sectional view showing a connector with a shielding body according to the invention in a configuration mated with a complementary connector. Fig 9I], [Fig 9J ], [ Fig 9K ] THE figures 9I, 9J , 9K are cross-sectional views respectively along II, JJ, KK of the figure 9 . [ Fig 10 ] there figure 10 is a perspective view of a first variant of an electromagnetic shielding body according to the invention. Fig 11 ] there figure 11 is a front view of the figure 10 . [ Fig 11A], [Fig 11B ] THE figures 11A et 11B are longitudinal section views respectively along AA, BB of the figure 11 . [ Fig 12 ] there figure 12 is a perspective view of a second variant of an electromagnetic shielding body according to the invention. Fig 13 ] there figure 13 is a front view of the figure 12 . [ Fig 13A ], [ Fig 13B ] THE figures 13A And 13Bare longitudinal section views respectively along AA, BB of the figure 13 . [ Fig 14 ] there figure 14 is a perspective view of a third variant of an electromagnetic shielding body according to the invention. Fig 15 ] there figure 15 is a front view of the figure 14 . [ Fig 15A ], [ Fig 15B ] THE figures 15A And 15B are longitudinal section views respectively along AA, BB of the figure 15 . [ Fig 16 ] there figure 16 is a perspective view of a fourth variant of an electromagnetic shielding body according to the invention. Fig 17 ] there figure 17 is a front view of the figure 16 . [ Fig 17A], [Fig 17B ] THE figures 17A et 17B are longitudinal section views respectively along AA, BB of the figure 17 . [ Fig 18 ] there figure 18 is a perspective view of a fifth variant of an electromagnetic shielding body according to the invention. Fig 19 ] there figure 19 is a front view of the figure 18 . [ Fig 19A], [Fig 19B ] THE figures 19A et 19B are longitudinal section views respectively along AA, BB of the figure 19 . [ Fig 20 ] there figure 20 is a perspective view of a sixth variant of an electromagnetic shielding body according to the invention. Fig 21 ] there figure 21 is a front view of the figure 20 . [ Fig 21A], [Fig 21B ] THE figures 21A et 21B are longitudinal section views respectively along AA, BB of the figure 21 . [ Fig 22 ] there figure 22 is a perspective view and partial longitudinal section of a connector whose housing contains a connector subassembly with an electromagnetic shielding body according to the invention, as connected to a cable. Fig 23 ] there figure 23 is a perspective view of a two-center contact connector subassembly comprising an electromagnetic shielding body of the invention and a two-wire cable, in an intermediate mounting configuration. Description détaillée

[0042] Throughout this application, the terms "front" and "rear" are to be understood in relation to the contact face of an electromagnetic shielding body and a connector subassembly according to the invention. Thus, the front portion of a connector component is the portion intended to be closest to the complementary connector with which the connector is intended to connect. Therefore, the front face of the electrical insulating block of the connector is the face intended to be in contact with that of a complementary connector, and the front portion of a center contact is the portion intended to be mated with a center contact of the complementary connector.

[0043] For clarity, the same numerical reference is used for the same element of a subset according to the state of the art and of a subset according to the invention.

[0044] There figure 1 has already been described in detail in the preamble. It will therefore not be commented on further below.

[0045] We have represented on the figures 2 , 4 And 5 , a coaxial connector subassembly 1 comprising an electromagnetic / ground shielding body according to the invention.

[0046] The connector subassembly 1 extends along a longitudinal axis X, is pre-assembled, as it includes an electrical insulating block 11 pre-assembled in a front metal body, in particular a monobloc 10 forming an electromagnetic shielding body according to the invention.

[0047] Subassembly 1 is connected and mounted on an insulated coaxial cable 2.

[0048] Cable 2 comprises an outer sheath 20 of electrical insulating material and an electrical conductor 22, insulated from the outside by the outer sheath 20.

[0049] Cable 2 also includes a metallic braid 23 for electromagnetic shielding surrounding the insulated conductor.

[0050] A dielectric 24 is interposed between the core 21 of the insulated conductor and the metallic braid 23.

[0051] The one-piece metal body 10 forming the electromagnetic shielding body is made by cutting and rolling, and ensures electrical ground continuity and impedance matching.

[0052] In a cavity 114, 115 of the electrical insulating block 11 provided for this purpose, a central contact 12 is inserted comprising a crimping end portion 14 which extends, in particular by being offset in projection, towards the rear of the insulating block 11. The single central contact 12 can be formed from a one-piece metallic blank produced by a cutting technique, preferably rolled from a continuous strip 18.

[0053] The end part 14 of the central contact 12 is crimped around a bare core end 22 of a wire of the coaxial electrical cable 2.

[0054] In the illustrated example, the central contact 12 is of the female type. A central contact of the male type is also possible.

[0055] The metallic body 10 forming an electromagnetic shield according to the invention has a general circular cross-section and includes first of all a housing for housing and holding the electrical insulating block 11. The cross-section can also be oblong in shape.

[0056] On its outer periphery, the body 10 comprises at least two different parallel lamellae 100, 102, whose longitudinal cross-sectional profiles differ from each other but have an identical neutral fiber length. This neutral fiber is referenced FN and shown in a dashed line. figures 11A, 11B , 13A , 13B, 15A , 15B , 17A, 17B , 19A 19B , 21A et 21B .

[0057] The longitudinal section of each of the slats 100 and 102 exhibits at least one deformation that extends radially. In other words, the slats 100 and 102 each have a longitudinal profile that differs radially from the rest of the electromagnetic shielding body.

[0058] The different lamellae 100 and 102 are distributed alternately on the outer periphery of the body 10.

[0059] One of the two strips 100 includes at least one outwardly projecting boss 101 to form an electrical contact point with a metallic shielding body 30 of a complementary connector 3. The strip 100 may have a constant thickness along its length, or include one or more areas of reduced thickness, for example, by impact during the cutting / forming operation of the body. As illustrated in figures 2 à 4 , the boss 101 can have a cylindrical cross-section and a spherical longitudinal section.

[0060] The other of the two 102 blades is devoid of outward bossing.

[0061] As illustrated in figures 2 à 4 This blade can be provided with a boss 103 projecting inwards towards the body. This boss 103 can have a cylindrical cross-section. This boss 103 reduces the clearance between an external face of the insulating block 11 and the internal face of the boss 103, and ensures better centering of the insulating block 11 within the body 10, and therefore good coaxiality. The boss 103 can have a non-zero radial clearance with the external face of the insulating block in both the uncoupled and coupled positions of the connector. Alternatively, the boss 103 can be flush with the external face of the insulating block 11, particularly in the coupled position. This boss 103 can be positioned at approximately the same longitudinal dimension or offset longitudinally relative to the outwardly projecting boss. Due to the reduced distance with the central contact 12, the boss 103 allows for characteristic impedance compensation with respect to the boss 101, which is radially further from the central contact 12.

[0062] Compared to a state-of-the-art shielding body, the body 10 according to the invention, with a reduced number of bosses 101 that constitute the electrical contact points, reduces the coupling forces of the connector integrating the body 10 with a complementary connector 3. Furthermore, with the same number of bosses, the electromagnetic shielding of the body 10 is maintained.

[0063] The front longitudinal ends of all the slats 100, 102 are connected to each other by a front peripheral band 104, notably in the form of a cylinder. This front band 104 allows the body 10 to be pre-centered during the initial coupling with a complementary armor body 30.

[0064] The rear longitudinal ends of all the slats 100, 102 are connected together by a rear peripheral band 105, in particular in the form of a cylinder closed on itself.

[0065] The attachment of the blades 100, 102 at their two ends to a cylindrical shape 104, 105 makes it possible to stiffen said blades, to protect them from mishandling, to limit openings detrimental to the EMI (English acronym for "Electro Magnetic Interference") shielding in RF,...

[0066] In the illustrated example, the electromagnetic shielding body 10 comprises a cylinder 106 closed upon itself in the rear extension of the rear peripheral strip 105.

[0067] As shown on the figure 2 And 6C , the peripheral band 104 connecting the front longitudinal ends can be provided with at least one longitudinal slot 107.

[0068] Alternatively, as illustrated in the figure 3 The front peripheral strip 104 can have edges that are joined and welded together. A weld point 109 is illustrated in figure 3 .

[0069] Subassembly 1 further includes a crimping ferrule 16.

[0070] As illustrated in the figure 4 , the ferrule 16 is of general shape partially hollow cylindrical can be formed from a one-piece metal blank made by a cutting technique, preferably rolled from a continuous strip 17.

[0071] Finally, subassembly 1 may include a rear metal armor body 19 consisting of a hollow cylinder closed upon itself, with two different diameters, one extending from the other. This rear body 19 is inserted at the rear of the front body 10.

[0072] There figure 6 illustrates a subset of connector 1 as mounted and connected to cable 2 with its center contact 12 crimped onto the center contact 22 of cable 2.

[0073] The rear body 19 is inserted into the front body 10, being in contact with and around the insulating block 11 and the dielectric 24 of the cable 2.

[0074] The ferrule 16 is crimped onto the metal braid 23 of the cable 2 itself around the rear body 19 of electromagnetic shielding.

[0075] There figure 6A Section AA allows us to see the profile of the slats 102 with internal boss 103 and the limited play it defines with the insulating block 11.

[0076] There figure 6B In section BB, the profile of the slat 100 with external boss 101 can be seen, which forms an electrical contact point.

[0077] There figure 6C Cross-section CC allows us to see the gap that separates a 100 lamella with an external boss 101 and a 102 lamella without this external boss.

[0078] There figure 7 illustrates an electromagnetic shielding body 10 housing an electrical insulating block 11, the external bosses 101 of the slats 100 forming the electrical contact points, the internal bosses 103 of the slats 102 forming centering points of the insulating block 11.

[0079] There figure 7F in section FF shows a circumscribed circle which defines the external surface of the external bosses 101 of electrical contact and the internal bosses 103 of the slats 102 which are closest to the insulating block 11 in order to recenter it.

[0080] There figure 8 shows, in cross-sectional view, a subassembly of connector 1 according to the invention. On this figure 8 The double arrows show the distances between the central contact 12 and the slats 100 and 102 of the mass body 10, allowing the characteristic impedance to be calculated. It can thus be seen that with the outer bosses 101, i.e., those furthest from the central contact 12, the impedance is increased, while with the inner bosses 103, i.e., those closest to the central contact 12, the impedance is reduced. In other words, the increased impedance of the outer bosses 101 is compensated by the inner bosses 103.

[0081] There figure 9 shows in longitudinal section view a sub-assembly of connector 1 according to the invention in position coupled with a complementary connector 3.

[0082] In this coupled configuration, the outer bosses 101 are in contact with the ground body 30 of the complementary connector 3.

[0083] The internal bosses 103 are not in contact with the insulating block 11, but limit its movement by a reduced, or even zero, guide clearance without pressure effort.

[0084] There figure 9I Section II shows that at a longitudinal rib in front of the external bosses 101, none of the lamellae 100, 102 is in contact with the body of mass 30.

[0085] There figure 9Jin section JJ at the level of the external bosses 101 and the internal bosses 103, highlights that only the slats 100 with the external bosses 101 are in mechanical and therefore electrical contact with the mass body 30.

[0086] There figure 9K in section KK shows that at a longitudinal dimension at the rear of the lamellae 100, 102, the cylindrical envelopes 30, 105 of the mass bodies retain a non-zero clearance.

[0087] Different variations in the shapes, dimensions and arrangements of 100 and 102 slats can be considered, depending on manufacturing constraints or the required mechanical or electrical performance.

[0088] THE Figures 10 , 11, 11A and 11BThey show a first variant, with four slats 100 arranged alternately with four slats 102 on the outer periphery of the body 10. A slat 100 has a reduced rear portion and includes an external boss 101 with a spherical cross-section. A slat 102 has a reduced rear portion and includes an internal boss 103 arranged at the same longitudinal dimension as the external boss 101.

[0089] THE Figures 12, 13, 13A And 13B They show a second variant, with four slats 100 arranged alternately with four slats 102 on the outer periphery of the body 10. A slat 100 has a constant thickness and includes an external boss 101 of simple shape, in particular with a cylindrical cross-section. A slat 102 has a constant thickness and includes an internal boss 103 arranged at the same longitudinal dimension as the external boss 101.

[0090] THE Figures 14, 15, 15A And 15B They show a third variant, with four slats 100 arranged alternately with four slats 102 on the outer periphery of the body 10. A slat 100 has a constant thickness and includes an external boss 101 of simple shape, notably with a cylindrical cross-section, and an insertion slope. A slat 102 has a constant thickness and includes an internal boss 103 arranged at a longitudinal dimension offset from the external boss 101.

[0091] THE figures 16, 17 , 17A and 17BA fourth variant is shown, with four slats 100 arranged alternately with four slats 102 on the outer periphery of the body 10. A slat 100 has a constant thickness and includes an external boss 101 of simple shape, in particular with a cylindrical cross-section. A slat 102 has a constant thickness and includes a flat surface 108 that projects outwards but without any area of ​​possible electrical contact with the complementary mass body 30 after coupling. This flat surface 108 guides the mass body 10 within the complementary mass body 30 during coupling. This flat surface 108 is arranged at the same longitudinal dimension as the external boss 101.

[0092] THE figures 18 , 19, 19A and 19BA fifth variant is shown, with three slats 100 arranged alternately with three slats 102 on the outer periphery of the body 10. These slats 100 and 102 are therefore wider and more robust than those of the previous variants for the same diameter of the mass body 10. A slat 100 has a constant thickness and includes an external boss 101 of simple shape. A slat 102 has a constant thickness and includes a flat surface 108, which protrudes outwards but without any area of ​​possible electrical contact with the complementary mass body 30. This flat surface is arranged at the same longitudinal dimension as the external boss 101. Behind the flat surface 108, an internal boss 103 is arranged at a longitudinal dimension offset from the external boss 101.

[0093] THE figures 20, 21, 21A and 21BThey show a sixth variant, with three lamellae 100 arranged alternately with three lamellae 102 on the outer periphery of the body 10. These lamellae 100 and 102 are therefore wider and more robust than those of the previous variants with four lamellae 100 and four lamellae 102 for the same body diameter of mass 10. A lamella 100 has a constant thickness and includes a simple outer boss 101. A lamella 102 has a constant thickness and includes an inner boss 103 arranged at the same longitudinal dimension as the outer boss 101.

[0094] A subassembly 1, which has just been described, is housed and fixed in the housing 50 of a suitable enclosure 5 to form a connector 4 as shown in figure 22 , with the central contact 12, already crimped by its crimping part 14, at the bare end of the wire 21, of the cable 2. The subassembly 1 is centered in the housing 50 of the case 5 by the cylinder 106.

[0095] There figure 23 illustrates an embodiment with a connector subassembly 1 with a grounding body 10 according to the invention, having an oblong cross-section, which houses an insulating block 11 into which are inserted two central contacts 12, 13 to be crimped by their crimping portion 14, 15, each to the bare end of a wire insulated by a sheath 24, 25 of a cable 2 with a metal braid 23. Thus, in this embodiment with two central contacts, the electrical cable comprises two insulated wires, each insulated wire comprising a conductive core 21 surrounded by a dielectric 24, 25, the two insulated wires being surrounded by a metal braid 23. The metal braid may be surrounded by an outer insulating sheath 20.

[0096] As shown in the various figures illustrating the variants, the outer diameter Ø 1 defined by the set of bosses 101 projecting outwards from the slats 100 is always greater than the outer diameter Ø 2 defined by the set of raised or flat surfaces of the slats 102, regardless of their shape (internal boss 103, flat surface 108, or other). Thus, it is ensured that the electrical contact points of the mass body 10 with a complementary mass body 30 are exclusively provided by the outer bosses 101 of the slats 100. NB: I am not in favor of mentioning the concept of an envelope, which may be confusing for the examiners. In other words, the diameter Ø1 is always greater than the inner diameter (or inner profile) of the complementary mass body 30. And the diameter Ø2 is always less than the inner diameter (or inner profile) of the complementary mass body 30.

[0097] To produce an electromagnetic shielding body 10 according to the invention, the following steps are carried out: i / supply of a flat metal strip; ii / flat cutting of slots each defining a space between two adjacent slats 100, 102; iii / forming of at least one slat 100 including a boss 101 intended to project outwards from the body; iv / forming of at least one slat 102 having a longitudinal section profile different from that of the first slat without a boss, and preferably having a neutral fiber length identical to that of the first slat; v / rolling around the longitudinal axis of the metal strip to form the body 10.

[0098] Steps iii / and iv / can be carried out in any order.

[0099] Steps iii / / and iv / can be carried out simultaneously or sequentially.

[0100] Other variations and improvements can be envisaged without departing from the scope of the invention.

[0101] The connector sub-assembly 1 can be configured to plug in more than two center contacts into a single electrical insulating block, the shielding body 10 with 100, 102 different lamellae being adapted accordingly.

Claims

1. Electrically conductive body (10) with longitudinal axis (X), forming an electromagnetic shielding body for a connector (1) for transmitting electrical and / or data and / or radio frequency (RF) signals, housing at least one central contact intended to be connected to a cable wire, comprising a housing for housing and retaining an electrical insulating block (11), and, on its outer periphery, at least two different strips (100, 102) extending along the longitudinal axis (X) and whose longitudinal section profiles are different from each other, one of the two strips (100) comprising at least one boss (101) projecting outwards, to form an electrical contact point, the other of the two strips (102) being without a boss on the outside, the two strips being connected to each other at each of their longitudinal ends by a peripheral strip (104, 105).

2. Electromagnetic shielding body (10) according to claim 1, the at least two strips of different profiles having an identical neutral fiber length.

3. Electromagnetic shielding body (10) according to claim 1 or 2, the peripheral band (104) connecting the front longitudinal ends being provided with at least one longitudinal slot (107).

4. Electromagnetic shielding body (10) according to any one of the preceding claims, comprising more than two strips, the different strips being distributed alternately on the outer periphery of the body.

5. Electromagnetic shielding body (10) according to one of the preceding claims, the other of the two strips (102) without outwardly projecting boss, comprising an inwardly projecting boss (103).

6. Electromagnetic shielding body (10) according to claim 5, the inwardly projecting boss being arranged substantially at the same longitudinal dimension or offset longitudinally with respect to the outwardly projecting boss.

7. Electromagnetic shielding body (10) according to any one of the preceding claims, the boss (101) projecting outwards, and where applicable the boss projecting inwards having a cylindrical cross-section and / or a spherical longitudinal cross-section.

8. Electromagnetic shielding body (10) according to any one of the preceding claims, the other of the two strips (102) without outwardly projecting boss, comprising a flat surface (108) projecting outwards with a transverse dimension lower than the outwardly projecting boss.

9. Electromagnetic shielding body (10) according to any one of the preceding claims, the shielding body (10) being monobloc, preferably made by cut-roll.

10. Electromagnetic shielding body (10) according to any one of the preceding claims, the constituent material of which is selected from copper, a copper alloy, stainless steel.

11. Subassembly for connector (1) comprising: - at least one central contact (12, 13), intended to be connected, preferably crimped to the end of a wire (21, 22) of an electrical cable (2), - an electrical insulating block (11) comprising at least one cavity (114, 115) into which the central contact is inserted, - an electromagnetic shielding body according to one of the preceding claims, the housing of which accommodates and retains the electrical insulating block (11).

12. Connector (4) comprising: - a subassembly (1) according to claim 11, - a housing (5), preferably made of electrically insulating material in which the subassembly is housed and fixed.

13. Method for producing an electrically conductive body (10) forming an electromagnetic shielding body for a connector (1) for transmitting electrical and / or data and / or radio frequency (RF) signals, housing at least one central contact intended to be connected to a cable wire, the method comprising the following steps: i / supplying a flat metal strip; ii / cutting flat slots, each defining a space between two adjacent strips; iii / forming at least one first strip comprising a boss intended to protrude outwards from the body; iv / forming at least one second strip having a longitudinal cross-section profile different from that of the first strip, which lacks a boss, and preferably having a neutral fiber length identical to that of the first strip; v / rolling around the longitudinal axis of the metal strip to form the body;steps iii / and iv / can be carried out simultaneously or sequentially in any order.

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