Connector sub-assembly or connector for cable with at least one insulated electrical wire, comprising metal body housing at least one central contact connected to cable wire and comprising rear part for crimping around ferrule for crimping onto the cable

Abstract

To provide a connector sub-assembly or connector for a cable with at least one insulated electrical wire, including a metal body housing at least one central contact connected to a cable wire and including a rear part for crimping around a ferrule for crimping onto the cable.SOLUTION: The present invention relates to a connector sub-assembly or connector (1) intended to be electrically connected to an electrical cable (2) that includes at least one insulated wire including a core (21) and an electrically insulating sheath (24), a metal braid (23) encircling the at least one insulated wire, and an outer sheath (20) made of electrically insulating material encircling the metal braid. The sub-assembly includes a ferrule crimped first to the metal braid of the cable in a configuration permitting rear axial abutment against the outer sheath of the cable.SELECTED DRAWING: Figure 5

Description

Technical Field

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

[0002] More particularly, the present invention relates to a connector in which each central contact is connected to the stripped end of an electrical cable wire, preferably crimped.

[0003] Specifically, the present invention is applicable to data transmission connections using a cable that includes one, one pair, or a plurality of pairs of shielded or unshielded transmission wires.

[0004] More generally, the present invention is applicable to any type of connection for transmitting electrical signals and / or data and / or radio frequency (RF) signals, including coaxial connectors that include a single central conductor.

[0005] One advantageous application is for connections in motor vehicles.

Background Art

[0006] In the field of connections for transmitting electrical signals and / or data and / or radio frequency (RF) signals, RF connectors are known that include an electrical insulation block in which one or more central contacts are housed and, when pre-assembly is appropriate, each is intended to be crimped or crimped around the stripped end of an electrical cable wire.

[0007] One such type of coaxial connector subassembly 1 is shown in FIG. 1.

[0008] The subassembly 1 is made by cutting and rolling and includes a one-piece metal body 10 that forms an electromagnetic shield body.

[0009] This shield body 10 holds an electrical insulation block therein into which a central contact is inserted, the central contact extending towards the rear part of the insulation block and including a crimping end part that projects when extending.

[0010] This end part of the central contact is crimped around the stripped end of the wire core 21 of the coaxial electrical cable 2, which may include a metal braid 23 for electromagnetic shielding, that surrounds the insulating conductor.

[0011] The electrical insulation sheath 24 may directly surround the core 21 of the wire.

[0012] In addition to crimping the central contact, it is known to join such a connector to another part of the cable, such as its metal braid 23, by crimping an external body that forms the electrical grounding of the connector around said part.

[0013] The crimping force directly affects the mechanical holding force between the connector and the cable.

[0014] However, crimping causes accompanying deformations to one or more components of the cable and / or the connector. This deformation may have an adverse effect on the electrical characteristics of the formed assembly composed of the connector crimped onto the cable.

[0015] Therefore, generally, it is necessary to find a compromise between sufficient mechanical holding force and good electrical characteristics such as the characteristic impedance of the transmission line formed by the connector.

[0016] Such a compromise may be difficult or even impossible to achieve, especially in applications where the signal is at high frequencies.

[0017] To improve this situation, as shown in FIG. 1, it has already been proposed to insert a bushing, also called ferrule 16, between the crimping part of the external grounding body of the connector and the part of the cable intended to be disposed around the cable.

[0018] Thus, this ferrule is first crimped onto the part of the cable where the covering of the outer sheath of the cable has been removed, in particular onto the metal braid, and then at least one crimping part of the external grounding body of the connector is crimped onto the ferrule.

[0019] The main drawback of known solutions involving the insertion of a crimping ferrule is, in fact, that they require a crimping force with severe requirements.

[0020] Specifically, crimping the ferrule too tightly onto the cable induces cable deformation, and thus deterioration of the electrical impedance and / or performance regarding signal transmission, especially at high frequencies. Conversely, crimping the ferrule too loosely for the purpose of preserving the performance regarding signal transmission risks the ferrule sliding over the metal braid during insertion into the external grounding body.

[0021] Furthermore, crimping the external grounding body onto the ferrule may also fail to prevent the risk of translational and / or rotational sliding between the ferrule and the crimping zone of the external body when mechanical stress is applied to the cable. The robustness of attaching the cable to the connector and the electrical continuity between the conductive part of the cable and the connector may also be questioned.

[0022] Patent US10468786B2 discloses a connector having a crimping base with several major drawbacks. This base, referred to as 200, first of all requires the production of a locking projection referred to as 240. In addition, the components must be assembled precisely and accurately, and the adjustment of the locking tang of the external ground body, referred to as 440, and the projection 240 requires a high angular accuracy. Finally, the crimping jaw used for crimping must have a specific shape with a zone that must not physically interfere with the projection. This makes it impossible to evenly compress the base for crimping. This also complicates the angular positioning of the crimping jaw with respect to the base 200. Because it must be such that it does not crush the projection 240.

Prior Art Documents

Patent Documents

[0023]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0024] Therefore, there is a need to further improve a connector that incorporates a base for crimping onto a cable within their external ground bodies, especially to achieve axial and / or rotational blocking of the base with respect to the cable and the ground body. The resulting connector needs to be reliable, simple to manufacture, and not degrade the electrical performance with respect to the transmission of signals through the connector and the cable to which the connector is connected, especially in RF signals.

[0025] The present invention aims to satisfy this need, either partially or wholly.

Means for Solving the Problems

[0026] For this purpose, according to one of its aspects, the subject matter of the present invention is a connector subassembly intended to be electrically connected to an electrical cable comprising at least one insulated wire including a core and an electrical insulation sheath, a metallic braid surrounding the at least one insulated wire, and an outer sheath made of an electrical insulating material surrounding the metallic braid, and extending along a longitudinal axis (X), - at least one central contact connected to the stripped end of the cable wire and preferably intended to be crimped, - an electrical insulating block including at least one cavity in which one or more central contacts are intended to be embedded, - a conductive body, a front part defining a recess for housing and holding the electrical insulating block, and a rear part including at least one crimping zone provided with at least one protrusion inside, the conductive body, - a ferrule intended to be crimped around the end of the metallic braid from which the outer cable sheath has been removed, the ferrule including at least one through opening configured to receive one or more protrusions when the rear part of the shield body is crimped so as to form an axial abutment between the ferrule and the shield body, the ferrule being further configured to allow an axial abutment of the ferrule against the end of the outer cable sheath before the rear part of the shield body is crimped onto the ferrule when the ferrule is crimped around the end of the metallic braid.

[0027] Advantageously, the shield body is of one-piece construction.

[0028] Also advantageously, the through opening of the ferrule is configured to form a rotational abutment between the ferrule and the shield body.

[0029] According to the first embodiment, the base has a front part of a cylindrical solid wall, a central part that is located around only a part of the outer periphery of the cylinder and extends the front part to form an offset surface, includes at least one through opening, and a rear part of the solid wall that is located around only a part of the outer periphery of the cylinder and extends the central part, and is intended to provide an axial contact of the base against the end of the external cable sheath when the base is crimped around the end of the metal braid, and has a hollow and partially cylindrical overall shape.

[0030] According to the second embodiment, the base has a front part of a cylindrical solid wall, a cylindrical central part that is located in the extension of the front part and includes at least one through opening, and a rear part of the cylindrical solid wall that is located in the extension of the central part and is intended to provide an axial contact of the base against the end of the external cable sheath when the base is crimped around the end of the metal braid, and has a hollow cylindrical overall shape.

[0031] According to this second embodiment, and according to one advantageous variant of the embodiment, - The base includes two or three through openings that are angularly distributed around the outer periphery of the cylinder, - The rear part of the shield body includes two or three protrusions that are angularly distributed and each is configured to be received in one of the through openings.

[0032] Preferably, the base is wound around itself and crimped around the end of the metal braid.

[0033] According to one advantageous variant of the embodiment, the rear part of the shield body includes two crimping zones, one of which is provided with at least one protrusion inside, and the other of which is provided with at least one barb inside that is configured to catch on the external sheath of the cable when the rear part of the shield body is crimped at the rear.

[0034] Preferably, one or more protrusions, and optionally one or more barbs, are each formed by pressing the rear part of the shield body.

[0035] Also preferably, the shield body and the base are produced by cutting and rolling.

[0036] According to another advantageous embodiment, the subassembly includes two center contacts intended such that the rear part of the center contact is crimped around the conductive core of a wire whose coating has been removed at its end, an insulating block including two cavities parallel to each other, in each of which one of the two center contacts is embedded, and projections configured to guide each of the two center contacts, which project longitudinally rearward and are crimped onto the conductive core of a wire, each of which has had one coating removed, during embedding. Therefore, the rear projection of the insulating block makes it easier to embed the center contact already individually crimped onto an electrical wire.

[0037] The present invention also relates to - at least one subassembly as described above, and - a housing in which the subassembly is received and fixed and relates to a connector including the same.

[0038] The present invention also relates to a base having an overall shape of a hollow cylinder, having a front part of a cylindrical solid wall intended to be crimped around the end of a metal braid from which the outer cable sheath has been removed, a central part of a cylindrical shape located at an extension of the front part and including at least one through opening, and a rear part of a cylindrical solid wall located at an extension of the central part and intended to provide an axial abutment of the base against the end of the outer cable sheath when the base is crimped around the end of the metal braid.

[0039] The present invention also relates to a hollow and partially cylindrical-shaped base having a front part of a cylindrical solid wall intended to be crimped around the end of a metal braid with the outer cable sheath removed, a central part located around only a part of the outer periphery of the cylinder and forming an offset surface around an extension of the front part and including at least one through opening, and a rear part of a solid wall located around only a part of the outer periphery of the cylinder and around an extension of the central part, intended to provide an axial abutment of the base against the end of the outer cable sheath when the base is crimped around the end of the metal braid.

[0040] Finally, the present invention relates to a method for joining the connector subassembly described above to an electrical cable including at least one insulated wire including a conductive core and an electrical insulation sheath, a metal braid surrounding the at least one insulated wire, and an outer sheath of an electrical insulation material surrounding the metal braid, the method comprising: i / assembling the electrical insulation block in its recess, i.e., the recess provided in the shield body for this purpose; ii / crimping the base onto the metal braid with the rear face of the base in axial abutment against the front end of the outer sheath of the cable and with the front end of the braid bent over the base; iii / stripping the covering of the ends of one or more wires of the cable to expose their conductive cores and crimping one or more central contacts onto one or more electrical wires of the electrical cable; iv / embedding the wired central contacts of one or more wires, preferably under the guidance of projections behind the insulation block, into their housing cavities, i.e., the housing cavities provided in the insulation block for this purpose, and inserting the base crimped onto the cable into the rear crimping part of the ground body; v / crimping the crimping zone at the rear of the shield body onto the braid and the base such that each projection is received in a through opening of the base to prevent the base from translating and preferably rotating relative to the ground body. Step vi / compresses the crimping zone at the rear of the shield body onto the outer sheath of the cable so that each return catches on the sheath, i.e., penetrates into the sheath, in order to prevent the sheath of the cable from translating and preferably rotating relative to the ground body. Step ii / can be carried out before step i / . Steps v / and vi / can be carried out simultaneously or sequentially.

[0041] Thus, the present invention essentially consists of a connector sub - assembly having an electrical insulation block that houses one or more central contacts crimped to the electrical wires of the cable and an outer shield that houses the ferrule.

[0042] The ferrule is first crimped to the metal braid of the cable in a configuration that allows for a rear axial abutment against the outer sheath of the cable. In other words, an axial abutment is formed between the rear end of the ferrule and the front end of the outer sheath of the cable.

[0043] When the ferrule is crimped onto the braid and the front end of the braid is folded onto the outer surface of the ferrule, one or more crimping zones at the rear of the shield body are crimped at least onto the ferrule.

[0044] During this latter crimping, each protrusion disposed inside the crimping zone is received into one through - opening of the ferrule provided for this purpose.

[0045] When pushing / pulling or twisting on the cable, the protrusion is likely to be in axial and / or radial contact with the front edge or rear edge or outer edge of the opening.

[0046] In the context of the present invention, the through - opening may consist of a through - window, i.e., an opening that passes straight through the ferrule material while being surrounded by the ferrule material, or may consist of a space lacking material due to material removal.

[0047] Compared with prior art solutions, the retention of the cable within the connector is improved as a result of a limited storage distance and improved mechanical tolerances of the braid, and the axial sliding of the ferrule within the ground body is reduced.

[0048] Accordingly, the present invention has a number of advantages compared with prior art connectors, among which - the ferrule can be optimally pre-positioned during insertion of the ferrule into the ground body before the ground body is crimped onto the ferrule, - the axial and / or rotational sliding of the ferrule with respect to the cable and the ground body can be restricted, - an increase in the holding force achieved by crimping, - there is no or very little restriction on the risk of cutting the metal braid of the cable, - it has no effect on the electrical performance with respect to the transmission of signals, in particular RF signals, through the connector and the cable to which the connector is connected may be mentioned.

[0049] Other advantages and features of the present invention are non-limiting and will become more apparent upon reading, with reference to the following drawings, the embodiments of the invention given by way of example for carrying out the invention.

Brief Description of the Drawings

[0050]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 10A

Figure 11

Figure 11A

Figure 12

Figure 13

Figure 14

Figure 15

Figure 16

Figure 17

Figure 18

Figure 18A

Figure 19

Figure 20

Figure 21

Best Mode for Carrying Out the Invention

[0051] Throughout this patent application, the terms "front" and "rear" are to be understood with respect to the connection surface of the connector sub-assembly according to the present invention. Thus, the front portion of a connector component is the surface intended to be closest to the complementary connector to which the connector is intended to connect. Thus, the front surface of the electrical insulation block of the connector is the surface intended to contact the surface of the complementary connector, and the front portion of the center contact is the portion intended to be coupled to the center contact of the complementary connector.

[0052] For clarity, the same reference numbers are used to denote given elements of the prior art sub-assembly and the sub-assembly according to the present invention.

[0053] Figure 1 has already been described in detail in the preamble and will not be discussed further below.

[0054] Figures 2 and 3 show a sub-assembly 1 of a coaxial connector according to the invention and a coaxial connector 4 incorporating such a sub-assembly.

[0055] The connector sub-assembly 1 extends along the longitudinal axis X and is pre-assembled. This is because it includes an electrical insulation block 11 pre-assembled within a metal body, particularly within an integral body 10 forming an electromagnetic shield body.

[0056] The sub-assembly 1 is connected to and assembled onto a coaxial cable 2 having one insulated wire.

[0057] The cable 2 includes an outer sheath 20 made of an electrical insulating material and a conductor 21 insulated from the outside by the outer sheath 20.

[0058] The cable 2 also includes a metal braid 23 for electromagnetic shielding that surrounds the insulated conductor.

[0059] An electrical insulation sheath 24 is inserted between the core 21 of the insulated conductor and the metal braid 23.

[0060] The integral metal body 10 forming the electromagnetic shield body is produced by cutting and rolling to ensure electrical ground continuity and impedance matching.

[0061] The metal body 10 may particularly include a metal jacket 1000 and, optionally, a protective tube 1010 assembled at least partially around the jacket 1000.

[0062] The metal jacket 1000 is composed of three parts: a front part 100, an intermediate part 101, and a rear part 102, as shown in Figures 2 to 4.

[0063] The front part 100 defines a recess inside which the electrical insulation block 11 is held.

[0064] The central contact 12 is inserted into the cavity 111 of the electrical insulation block 11 provided for this purpose, and the central contact extends towards the rear part of the insulation block 11 and includes a crimping end part 14 that protrudes particularly when it extends. The single central contact 12 can be formed from an integral metal blank made using cutting and rolling techniques, preferably from a continuous strip 18.

[0065] The end part 14 of the central contact 12 is crimped around the end of the core 21 of the wire of the coaxial electrical cable 2 with its covering removed.

[0066] In the illustrated example, the central contact 12 is of the male type.

[0067] The middle part 101 of the shield body 10 is narrow. This constriction 101 makes it possible to match the impedance of the rear part of the sub - assembly 1 where the cable 2 is preferably crimped under the shield braid, and the impedance of the front part including the insulation block 11 in which the central contact 12 is embedded.

[0068] The rear part 102 of the shield body 10 includes two crimping zones 103, 104, one being inside the rear extension of the other.

[0069] The crimping zone 103 includes, inside, one or more inwardly protruding protrusions 105.

[0070] The crimping zone 104 includes, inside, one or more inwardly protruding returns 106. The protrusions 105 and the returns 106 may be made by pressing, preferably simultaneously, and may have the same shape and / or the same dimensions if necessary. The protrusions 105 and the returns 106 can take any shape that allows mechanical abutment to be achieved.

[0071] Sub-assembly 1 further includes a crimping base 16 that contains a through-opening therein.

[0072] As shown in Figure 2, the base 16 can be formed from a one-piece metal blank made using cutting and rolling techniques, preferably from a continuous strip 17.

[0073] In its crimping configuration shown in Figures 7 and 8, the base 16 has a generally hollow and partially cylindrical overall shape with a front portion 161 of a cylindrical solid wall, a central portion 162 located around only a part of the outer periphery of the cylinder and extending from the front portion and including a through-opening 160, and a rear portion 163 of a solid wall located around only a part of the outer periphery of the cylinder and extending from the central portion.

[0074] This rear portion 163 is intended to provide axial abutment of the base against the end of an external cable sheath via its rear face 164.

[0075] The rear face 164 may optionally include a fastener left by cutting the base from the continuous strip 17. This fastener has a thickness of 0 to 0.3 mm from the rear face 164.

[0076] The rear face 165 of the cylindrical front portion 161 is a surface longitudinally offset forward from the rear face 164 of the rear portion 163. This offset surface 165 forms the through-opening 160 and facilitates the angular positioning of the base at the rear of the body, thereby obtaining an indentation that limits the risk of interference between the projection of the ground body and the base during joining and crimping.

[0077] As just described, sub-assembly 1 is housed and fixed within a recess 40 of a suitable housing 4 as shown in Figure 3, with the center contact 12 already crimped to the stripped end of the wire 21 of cable 2 via its crimping portion 14.

[0078] To assemble sub-assembly 1 to cable 2 as just described, the following steps are performed.

[0079] Note that, prior to this, the outer sheath 20 of the electrical cable 2 is stripped of its covering in order to expose the metal braid 23 over a predetermined distance.

[0080] The joining step comprises i / assembling the electrical insulation block 11 within its recess, i.e. within the metal jacket 100 provided for this purpose and within the recess for assembling the protective tube 1010 having a metal jacket if required; ii / crimping the ferrule 16 onto the metal braid 23 with the rear face 164 of the rear part 163 of the ferrule 16 in axial abutment B1 against the front face of the outer sheath 20 of the cable 2 (Figure 9), the front end of the braid then being bent over onto the outer face of the ferrule; iii / stripping the covering from the end of the wire 21 of the cable 2 to expose its conductive core and crimping the central contact 12 onto the electrical wire 21 of the electrical cable 2; iv / embedding the central contact 12 of the wire within its housing cavity 111, i.e. within the insulation block 11 provided for this purpose and within the housing cavity into which the ferrule 16 crimped onto the cable is inserted at the rear crimping part of the earth body; v / crimping the crimping zone 103 of the rear part 102 of the shield body onto the braid and the ferrule 16 such that each projection 105 is received within the through-opening 160 of the ferrule in order to prevent the ferrule from translating and rotating with respect to the earth body (Figure 10); vi / crimping the crimping zone 104 of the rear part 102 of the shield body onto the outer sheath 20 of the cable 2 such that each barb 106 catches on, i.e. penetrates into, the sheath in order to prevent the sheath of the cable from translating and rotating with respect to the earth body (Figure 10).

[0081] Step ii / may be carried out before step i / .

[0082] Steps v / and vi / may be carried out simultaneously or sequentially.

[0083] Step ii / enables achieving sufficient crimping while preventing the base 16 from moving rearward relative to the end of the outer sheath of the cable. This abutment enables maintaining the correct positioning of the base relative to the grounding body before the rear portion of the grounding body is crimped onto the braid and the base.

[0084] The crimping of the resulting assembly is better than that of prior art solutions even when the cable is subjected to mechanical stress.

[0085] Therefore, when the cable 2 is pulled rearward as indicated by the arrow T in FIG. 10, the front edge of the through-opening 160 and / or the rear edge of the front portion 161 is in a state of axial abutment B2 against the front surface of the protrusion 105. In other words, this axial abutment B2 restricts the storage distance of the cable 2 and increases the holding force of the cable.

[0086] When the cable 2 is twisted as indicated by the arrow R in FIG. 11, the outer edge of the through-opening 160 and / or the outer edge of the central portion 162 is in a state of radial abutment against the side surface of the protrusion 105. In other words, this radial abutment restricts the rotational slip of the base 16 within the grounding body 10, and even when the cable 2 is severely twisted, complete severance of the strands of the braid 23 is avoided, thus improving the mechanical tolerance of the strands of the braid 23.

[0087] When the cable 2 is pushed forward as indicated by the arrow P in FIG. 12, the rear surface of the protrusion 105 is in a state of axial abutment B3 against the rear edge of the through-opening 160 defined within the rear portion 163.

[0088] In other words, this axial abutment B3 restricts the axial slip of the base in the translational direction within the grounding body 10.

[0089] Therefore, this configuration makes it possible to prevent the forces on the cable from being transmitted to the connector and to its contact surface with the complementary connector.

[0090] In other words, the resulting assembly makes it possible to limit the relative translational and / or rotational movement between the base 16 and the ground body 10, thus reducing the risk of braid cutting and disconnection of the connection between the cable and the connector.

[0091] Figures 13 to 18A show a second embodiment in which only the base 16 has a structure different from the structure described above.

[0092] In Figures 13 to 18A, the base 16 has an overall shape of a hollow cylinder, having a cylindrical front portion 161 of a solid wall, a cylindrical central portion 162 located at an extension of the front portion and including a through opening 160, and a cylindrical rear portion 163 of a solid wall located at an extension of the central portion.

[0093] As shown in Figure 15, the base 16 preferably includes three through openings 160 angularly distributed about 120° from each other, each being intended to receive one projection 105.

[0094] Alternatively, as shown in Figure 16, the base 16 may include only two through openings in a state where the angular distribution is adapted to the position of the projections 105 on the ground body. The reduction in the number of openings allows for a greater tolerance with respect to the angular position of the base around the axis X of the ground body.

[0095] The rear portion 163 extending around the entire cylindrical outer periphery of the base 16 makes it possible to optimize the area of the base in the abutment against the front end of the cable sheath 20.

[0096] Other variations and improvements may be provided without departing from the scope of the present invention.

[0097] In the illustrated example, the coaxial connector subassembly was configured to have a single center contact 12 embedded within one housing cavity 111. However, the present invention can be implemented when two center contacts are embedded within two cavities extending parallel to each other, or when there are three or more center contacts embedded within the same electrical insulation block.

[0098] Such a connector subassembly 1’ is shown in FIGS. 19 - 21 with two center contacts 12, 13 and one ferrule 16 crimped around the end of the metallic braid 23 with the outer sheath 20 of the cable 2 removed.

[0099] The rear portions 14, 15 of the contacts 12, 13 are crimped around the conductive cores 21, 22 of the wires of the cable 2 with the coating removed at their ends.

[0100] Each of the two contacts 12, 13 is embedded within one of two parallel cavities of the insulation block 11.

[0101] As seen in FIG. 19, the insulation block 11 includes projections 110 that project longitudinally at the rear and are configured to guide each of the two center contacts 12, 13 when they are embedded. Thus, this rear projection 110 facilitates embedding the center contacts 12, 13 already individually crimped to the electrical wires.

[0102] In FIG. 20, the assembly formed by the electrical insulation block 11 and the contacts 12 and 13 crimped onto the cores 21 and 22 of the cable 2 is in a position inserted within the recess of the ground body 10. The braid 23 is bent over the crimped ferrule 16. In other words, the braid 23 first passes through the inside of the crimped ferrule 16 and then proceeds over the outside of the crimped ferrule 16.

[0103] In FIG. 21, the crimping zones 103, 104 of the ground body 10 are crimped, respectively, on the one hand on the braid 23 and the ferrule 16 and on the other hand on the outer sheath 20 of the cable 2. After the zone 103 is crimped, the projection 105 is positioned within the through-opening 160 which is either a window or a recess within the ferrule. Further, after the zone 104 is crimped, the return 106 penetrates into the sheath 20.

[0104] In the case of an embodiment having two center contacts, the electrical cable includes two insulated wires, each insulated wire including a conductive core 21 surrounded by an electrical insulation sheath 24, and the two insulated wires are surrounded by a metal braid 23. The metal braid may be surrounded by an outer insulation sheath.

[0105] The shape and / or dimensions of the projection 105 may be different from those shown, and in fact, the projection can take any shape. For example, they can take the shape of, among other things, a right parallelepiped or a curved projection.

Description of the reference numerals

[0106] 1 Sub-assembly 2 Coaxial electrical cable 4 Coaxial connector, housing 10 Integrated metal body, shield body, ground body, conductive body 11 Electrical insulation block 12 Center contact 13 Center contact 14 End part, rear part 15 Rear part 16 Crimping ferrule, ferrule 17 Continuous strip 18 Continuous strip 20 Outer sheath 21 Core, conductor, conductive core, electrical wire 22 Core, conductive core 23 Metal braid 24 Electrical insulation sheath 40 Recess 100 Front part 101 Intermediate part, constriction 102 Rear part 103 Crimping zone 104 Crimping zone 105 Protrusion 106 Return 110 Protrusion 111 Cavity, housing cavity 160 Through opening 161 Front part 162 Central part 163 Rear part 164 Rear surface 165 Rear surface 200 Base 240 Lock protrusion 440 Lock tongue 1000 Metal jacket 1010 Protection tube

Claims

1. A connector sub - assembly or connector (1), said connector sub - assembly or connector (1) being intended to be electrically connected to an electrical cable (2) comprising at least one insulated wire including a core (21) and an electrical insulation sheath (24), a metal braid (23) surrounding at least one said insulated wire, and an outer cable sheath (20) made of an electrical insulation material surrounding said metal braid, said connector sub - assembly extending along a longitudinal axis (X), at least one central contact (12, 13) connected to, and preferably intended to be crimped to, an end of the cable wire (21) with its coating removed, an electrical insulation block (11) including at least one cavity (111) in which one or more of said central contacts are intended to be embedded, a conductive body (10) forming a shield body, a front part (100) defining a recess for housing and holding said electrical insulation block, and a rear part (102) including at least one crimping zone (103) provided internally with at least one protrusion (105), a conductive body (10), a ferrule (16) intended to be crimped around said end of the metal braid with the outer cable sheath removed, comprising, said ferrule (16) including at least one through - opening (160) configured to receive one or more of said protrusions when the rear part of said shield body is crimped so as to form an axial abutment between said ferrule and said shield body, said ferrule being further configured to enable an axial abutment of said ferrule against the end of said outer cable sheath before crimping the rear part of said shield body onto said ferrule when said ferrule is crimped around said end of the metal braid. A connector sub - assembly or connector (1).

2. The sub - assembly according to claim 1, wherein said shield body (10) is of one - piece construction.

3. The sub - assembly according to claim 1 or 2, wherein said through - opening (160) of said ferrule (16) is configured to form a rotational abutment between said ferrule and said shield body.

4. said ferrule has a hollow and partially cylindrical overall shape, a front part (161) of a cylindrical solid wall, An offset surface (165) is formed around only a part of the outer periphery of the cylinder and is located in the extension of the front part, and a central part (162) including at least one of the through openings, A rear part (163) of a solid wall that is located around only a part of the outer periphery of the cylinder and in the extension of the central part, and is intended to provide axial contact of the base with respect to the end of the outer cable sheath when the base is crimped around the end of the metal braid, The subassembly according to any one of claims 1 to 3, having the above.

5. The base has an overall hollow cylindrical shape, A front part (161) of a solid wall of a cylindrical shape, A cylindrical central part (162) that is located in the extension of the front part and includes at least one of the through openings, A rear part (163) of a solid wall of a cylindrical shape that is located in the extension of the central part and is intended to provide axial contact of the base with respect to the end of the outer cable sheath when the base is crimped around the end of the metal braid, The subassembly according to any one of claims 1 to 3, having the above.

6. The base includes two or three through openings distributed angularly around the outer periphery of the cylinder, The rear part of the shield body includes two or three protrusions that are distributed angularly and are each configured to be housed in one of the through openings. The subassembly according to claim 5.

7. The base is wound around itself and crimped around the end of the metal braid. The subassembly according to any one of claims 1 to 6.

8. The rear part of the shield body includes two crimping zones, one of which is provided with at least the protrusion inside, and the other of which at the rear is provided with at least one return inside configured to catch on the outer cable sheath of the electrical cable when the rear part of the shield body is crimped. The subassembly according to any one of claims 1 to 7.

9. One or more protrusions and, if necessary, one or more returns are formed by pressing the rear part of the shield body. The subassembly according to any one of claims 1 to 8.

10. The shield body and the base are produced by cutting and rolling. The subassembly according to any one of claims 1 to 9.

11. The subassembly according to any one of claims 1 to 10, and a housing (4) in which the subassembly is housed and fixed, A connector (3) comprising:

12. A base, having an overall shape of a hollow cylinder, a front portion (161) of a cylindrical solid wall intended to be crimped around an end of a metal braid from which an outer cable sheath has been removed, a central portion (162) of a cylinder located in an extension of the front portion and including at least one through opening, a rear portion (163) of a cylindrical solid wall located in an extension of the central portion and intended to provide axial abutment of the base against an end of the outer cable sheath when the base is crimped around the end of the metal braid, A base having:

13. A base, having an overall shape that is hollow and partially cylindrical, a front portion of a cylindrical solid wall intended to be crimped around an end of a metal braid from which an outer cable sheath has been removed, an offset surface (165) is formed around only a part of the outer circumference of the cylinder in an extension of the front portion, a central portion including at least one through opening, and a rear portion of a solid wall located in an extension of the central portion around only a part of the outer circumference of the cylinder and intended to provide axial abutment of the base against an end of the outer cable sheath when the base is crimped around the end of the metal braid, A base having:

14. A method for joining a connector subassembly according to any one of claims 1 to 10 to an electrical cable (2) including at least one insulated wire including a conductive core (21) and an electrical insulation sheath (24), a metal braid (23) surrounding at least one of the insulated wires, and an outer sheath (20) of an electrical insulation material surrounding the metal braid, comprising: i / assembling an electrical insulation block (11) into its recess, i.e., into the recess provided in the shield body (10) for this purpose; ii / crimping the base (16) onto the metal braid (23) with the rear face (164) of the base (16) in axial abutment (B1) against the front end of the outer sheath (20) of the electrical cable (2) and with the front end of the metal braid bent onto the base; iii / stripping the covering of the end of one or more wires of said electrical cable (2) to expose its conductive core (21), and crimping one or more central contacts (12, 13) onto one or more of said insulated wires (21) of said electrical cable; iv / embedding the central contacts (12, 13) of one or more of said insulated wires into their housing cavities (111), i.e., into said electrical insulation block (11) provided for this purpose, and into the housing cavity into which the ferrule (16) crimped onto said electrical cable is inserted into the rear crimping part of the ground body; v / crimping the crimping zone (103) of the rear part (102) of said shield body onto said metal braid and said ferrule (16) such that each projection (105) is received within the through-opening (160) of said ferrule to prevent said ferrule from translating and preferably rotating with respect to said ground body; vi / crimping the crimping zone (104) of the rear part (102) of said shield body onto said outer sheath (20) of said electrical cable (2) such that each loop (106) catches, i.e., penetrates into, said outer sheath (20) to prevent said outer sheath of said electrical cable from translating and preferably rotating with respect to said ground body, Step ii / can be carried out before step i / , method.

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