• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to a connector (1) comprising: - a subset (2) comprising: • an electrically conductive body (20), • an electrical insulating block (21), housed in the conductive body, • at least two contacts central members (22, 23) inserted in the insulating block, each central contact comprising a crimping portion (24, 25), intended to be crimped around the conductive core of a stripped wire at its end, each crimping portion protruding from the conductive body and the insulating block, with its periphery disengaged from any part of the conductive body and the insulating block; two electrically conductive half-shells (4, 5) intended to be assembled together around the conductive body, the central contacts and a portion of the cable beyond the stripped ends of the wires; once the crimping portions of the contacts are crimped around the stripped ends of the wires.
    公开号:FR3074614A1
    申请号:FR1761704
    申请日:2017-12-06
    公开日:2019-06-07
    发明作者:Sebastien Annequin
    申请人:Raydiall；
    IPC主号:
    专利说明:

    CONNECTOR FOR CABLE WITH INSULATED ELECTRIC WIRES, COMPRISING A BODY HAVING CENTRAL SURFACE CONTACTS AND TWO HALF SHELLS ASSEMBLED BETWEEN THEM AROUND THE BODY AND CONTACTS CRIMPED ON THE WIRES
    Technical area
    The present invention relates to the field of electrical and / or data transmission connectors.
    It relates more particularly to a connector, the central contacts of which are crimped at the ends of electric cable wires.
    The invention applies in particular to connectors for data transmission using cables comprising one or more pairs of shielded or unshielded transmission wires
    The invention applies more generally to any type of connection for the transmission of electrical signals and / or data and / or radio frequency (RF) signals.
    An interesting application is connector technology for motor vehicles.
    Prior art
    In the field of connectors for transmitting electrical signals and / or data and / or radio frequency (RF) signals, connectors with electrical insulating block are known in which central contacts are pre-mounted, each intended to be crimped around a stripped end of an electric cable wire.
    There are shown in Figures IA, IB and 2, two examples of this type of connectors currently existing.
    The connector 1 firstly comprises a body 20 in which is housed an insulating block 21 inside which are pre-mounted central contacts 22, 23. In the example illustrated in FIGS. 1A and IB, the body 20 is metallic, while in the example of FIG. 2, it is made of insulating plastic material.
    To ensure the connection with an electric cable 3, the end parts 24, 25 of the central contacts 22, 23 are crimped around bare ends of cores 30, 31 of wires of a cable 3. As visible in the figure IB, each wire of the cable 3 comprises an electrically conductive core 30, 31 embedded in a layer of electrical insulator 32, 33.
    In addition, each body 20 extends at the rear beyond the central contacts 21, 22 by means of extension walls 26, 27 which extend on either side of the periphery of the central contacts 22, 23 .
    This type of connector has two major drawbacks which arise from the limited space delimited between the central contacts and the extension walls 26, 27.
    This restricted space with a distance X between the periphery of the central contacts 22, 23 and the walls 26, 27, induces a very limited passage for the jaws of a tool for simultaneously crimping the central contacts 22, 23.
    In other words, this limited space does not allow the use of large and robust crimping jaws. This has the consequence of reducing the service life of the crimping jaws used and also of causing frequent breakage of the jaws due to the increase in residual stresses generated by the crimping efforts.
    In addition, the restricted space delimited by the walls 26, 27 can greatly degrade the transmission of the signal which circulates from the central cores 30, 31 of the wires of the cable 3 in the central contacts 22, 23. In fact, because it is not physically possible to come as close as possible to the central contacts 22, 23 on pain of causing jaw breakage, the distance X is sufficient to induce a high impedance which degrades the electrical signal.
    By way of example, in the case of a connector for a motor vehicle, with the example of connector 1 according to FIGS. 1 and 2, the impedance in the area between walls 26, 27 and central contacts 22, 23 can be in the range of 100 ohms.
    There is therefore a need to improve connector solutions with a central contact connector to be crimped around bare ends of wires for the transmission of electrical signals and / or data and / or RF signals, in particular in order to eliminate the risk of crimping jaw breakage and / or at least eliminating greatly reducing the degradation of signal transmission.
    The object of the invention is to meet this need at least in part.
    Statement of the invention
    To do this, the invention relates to a connector, intended to be connected to an electrical cable comprising at least two insulated wires each consisting of an electrically conductive core coated with a layer of electrical insulator, and housed in a protective sheath , capable of integrating a metal strip, and / or a metal braid, the connector comprising:
    - a subset comprising:
    • an electrically conductive body, • an electrical insulating block, housed in the conductive body, • at least two central contacts, inserted in the insulating block, each central contact comprising a crimping part, intended to be crimped around the conductive core a bare wire at its end, each crimping portion projecting from the conductive body and the insulating block, with its periphery free from any part of the conductive body and the insulating block;
    - two electrically conductive half-shells, intended to be assembled to one another around both the conductive body, the central contacts and part of the cable beyond the stripped ends of the wires, once the crimping parts of the contacts are crimped around the stripped ends of the wires.
    Preferably, the two half-shells are intended to be assembled together by welding, preferably by laser welding.
    According to an advantageous embodiment, at least one of the two half-shells comprising one or more crimping tabs adapted to come crimp around the other half-shell and thus assemble the two half-shells together by crimping.
    The two half-shells can be of different shapes or of identical shapes.
    Only one of the two half-shells can include one or more crimping lugs. According to an advantageous embodiment, each of the two half-shells comprises one or more crimping tabs, each crimping tab of a half-shell being arranged opposite a crimping tab of the other half-shell, so that once the crimping has been carried out, the tabs folded over the half-shells are wound around the half-shells on complementary peripheral portions.
    According to an advantageous alternative embodiment, at least one crimping lug of one of the half-shells is further adapted to compress the other half-shell radially around the metal braid of the cable.
    According to another advantageous alternative embodiment, at least one of the demicoques comprising at least one additional crimping tab adapted to crimp around the cable, thus forming a cable retention element.
    According to another advantageous embodiment, the connector may further comprise an electrically conductive part, intended to guarantee an adaptation of electrical impedance when the connector is connected with the cable, the part comprising:
    - A front part whose shape has a continuous external profile and which internally defines at least two housings each adapted to accommodate the part of a non-stripped cable wire;
    a rear part, in the extension of the front part, the shape of which has a discontinuous external profile delimited by fins of shape complementary to that of the part of the wire of a non-stripped cable and adapted to be folded down by plastic deformation, around the latter.
    In other words, the invention consists in defining a connector with a first pre-mounted sub-assembly housing central contacts whose crimping part is free at the rear of the body of the sub-assembly, that is to say free of any element likely to interfere with the crimping jaws or even generate harmful mechanical interference, and with half-shells which, when assembled together, form a protective housing for crimped junctions between stripped ends of the cable wires and crimped central contacts around.
    Thanks to the invention, the crimping area of the central contacts is offset outside the rear of the connector sub-assembly, that is to say the conductive body and the electrical insulator. This allows for much larger crimping jaws than those used in the state of the art. As a corollary, this leads to an increase in the life of the crimping tool.
    In addition, the solution according to the invention makes it possible to come as close as possible to the central contacts and to the cable in order to adapt the electrical impedance by suitable shapes on the two conductive half-shells which therefore come as close as possible to the wires of the cable and central contacts crimped around the stripped ends of the latter. This impedance matching allows better signal transmission, and increases the electrical performance of the connector.
    This solution can also be applied to a connector with several twisted pairs, with the two pairs mounted in parallel in the connector, i.e. the four wires aligned, or in superimposed pairs.
    The invention also relates in another of its aspects, to a method of mounting a connector as described above, on an electric cable comprising at least two insulated wires each consisting of an electrically conductive core, coated with a layer of electrical insulator, and housed in a protective sheath, comprising the following steps:
    a / positioning of each bare end of the cable wire in the crimping part of a pre-mounted central contact of the sub-assembly;
    b / positioning of the central contacts on a lower crimping jaw;
    c / displacement of an upper crimping jaw towards and around the lower crimping jaw, so as to crimp the central contacts around the stripped ends of wire;
    d / positioning of the two half-shells around the conductive body and the crimped central contacts and of a part of the cable beyond the stripped ends of the wires;
    e / assembly of the two half-shells together.
    Step e / is preferably carried out by crimping by means of the crimping tab (s) of one or two half-shells.
    According to an advantageous alternative embodiment, the method comprises, during step e /, a step f / of crimping the crimp tab (s) of one of the demicoques around the other complementary half-shell on the metal braid of the cable.
    According to another advantageous alternative embodiment, the method comprises, during step e /, a step g / of crimping the additional crimping tab or tabs around the cable to form the retention element of the latter.
    According to an advantageous embodiment of the method, when the connector comprises an impedance adaptation piece, step a / comprises the following steps:
    a '/ once the ends of the wire cores of the cable have been stripped and these separated from one another, placing the electrically conductive part around the wire cores, so that the housings of the front part of the piece closely match the shape of the electrical insulators of the cable wires;
    a ”/: compression of the adaptation piece around the insulators, so as to bring the housings closer together and put them in direct contact with the insulators, and at the rear of the part, drawdown by deforming the fins on the insulators, so that they conform to the curves of the latter;
    a ’” /: positioning of each bare end of the cable wire in the crimping part of a pre-assembled central contact of the sub-assembly.
    After defining the connector as described above, the inventors analyzed that, in addition, the space between the two half-shells and the bare wires could allow an electrically conductive piece of electrical impedance matching to be mounted, the shape of which closely match the wires of the electric cable, in order to guarantee an optimal impedance matching. This part allows precise control of the distance between the conductive cores of the wires and the electrical ground of the connector.
    Thus, the invention also relates to an electrically conductive part, intended to guarantee an adaptation of electrical impedance when the connector is connected with a cable comprising at least one pair of twisted electrical wires, comprising:
    - A front part whose shape has a continuous external profile and which internally defines at least two housings each adapted to accommodate the part of a non-stripped cable wire;
    a rear part, in the extension of the front part, the shape of which has a discontinuous external profile delimited by fins of shape complementary to that of the part of the cable wire not stripped and adapted to be folded down by plastic deformation, around the latter.
    The housings are preferably contiguous with an open space between them.
    According to an advantageous variant, the continuous external profile has substantially the shape of an eight.
    Preferably, the part is metallic.
    Thus, the part according to the invention is intended to adapt the impedance of the connection in the area between the end of the cable sheath and the crimping area of the central contacts. To do this, the part according to the invention makes it possible to reduce the distance between the cores of the electrical wires and the electrical ground of the connector in the area between the end of the cable sheath and the crimping area of the central contacts.
    This impedance matching piece according to the invention therefore makes it possible to recreate an electrical ground as close as possible to the cable as does a strip and / or a metal braid initially present (s) in the cable and wound (s) around the electrical insulators of the wires but which is (are) stripped for the crimping operations of the ends of wires in central contacts.
    Indeed, the impedance in a connector is determined by the space between on the one hand the electrical mass defined by the body forming the ground contact of the connector or by the two half-shells assembled together between them of the connector as described above. and on the other hand, the electrically conductive core of each of the wires of the cable which convey a signal.
    The larger this space between the electrical ground and the core of each wire through which the signal is transmitted, the higher the impedance.
    However, the optimal position of the cable corresponds to a position of electrical ground which closely matches the wires as is found in the construction of the cable itself, which incorporates a strip or a metal braid wound around the insulating layer of the wires. cables to guarantee their impedance.
    However, when it is desired to strip the wires in order to carry out the crimping operations with the central contacts, it is necessary to remove the strip or the braid locally in order to be able to separate the wires from each other.
    Therefore, once the cable is mounted in a body forming a ground contact of the connector or between the two half-shells according to the invention, the resulting impedance is calculated on the distance between the conductive core of each of the wires and electrical ground (body forming ground contact or two half-shells).
    However, this distance is relatively large, hence an increased impedance.
    Thus, thanks to the impedance adapter piece according to the invention, the excessive electrical impedance which is due to the stripping of the strip and / or the metal braid is greatly reduced.
    Consequently, the adapter piece according to the invention makes it possible to maintain the integrity of the electrical signal coming from the cable to the connector sub-assembly or to a conventional connector.
    To best guarantee the continuity of the electrical signal, this adapter has a physical contact area with the electrical ground of the two half shells. This contact area can be obtained by compression of the two half-shells on said part or by welding between the adapter part and the half-shells.
    A subsequent advantage induced by the adapter piece according to the invention is that it can be used as a guide for the wires of the cable to correctly position their conductive cores relative to the central contacts before they are crimped. This increases the ease of assembly between cable and connector.
    The invention also relates to a set comprising:
    - a connector comprising:
    • an electrically conductive body, • an electrical insulating block, housed in the conductive body, • at least two central contacts, inserted in the insulating block, each central contact comprising a crimping part,
    - an electric cable comprising at least two insulated wires each consisting of an electrically conductive core coated with a layer of electrical insulator, and housed in a protective sheath, each conductive core being crimped inside the crimping part a central contact;
    - an electrical adapter part described above, the housings of which surround the electrical insulators of the wires and the fins are folded around them according to their curvature.
    According to a first embodiment, the assembly comprises two electrically conductive half-shells assembled together, around both the conductive body, the central contacts, part of the cable beyond the stripped ends of the crimped wires, thus that of the adapter piece which is in electrical contact with at least one of the two half-shells.
    According to a second embodiment, the assembly comprises an electrically conductive body, forming a ground contact positioned around both the conductive body, the central contacts, part of the cable beyond the stripped ends of the crimped wires, as well as the adapter in electrical contact with the body.
    Finally, the invention relates to a method for mounting an electrical adapter piece described above in a connector when connected with a cable comprising at least one pair of twisted electrical wires, the method comprising the following steps:
    a '/ once the ends of the wire cores of the cable have been stripped and these separated from one another, placing the electrically conductive part around the wire cores, so that the housings of the front part of the piece closely match the shape of the electrical insulators of the cable wires;
    a ”/: compression of the adaptation piece around the insulators, so as to bring the housings closer together and put them in direct contact with the insulators, and at the rear of the part, drawdown by deforming the fins on the insulators so that they conform to the curvatures of the latter;
    a ’” /: positioning of each bare end of the cable wire in the crimping part of a pre-assembled central contact of the sub-assembly.
    detailed description
    Other advantages and characteristics of the invention will emerge more clearly on reading the detailed description of examples of implementation of the invention made by way of illustration and not limitation, with reference to the following figures among which:
    - Figures IA and IB are partial perspective views of a first example of connector with central contacts to be crimped according to the state of the art;
    - Figure 2 is a perspective photographic reproduction of a second example of connector with central contacts to be crimped according to the state of the art;
    - Figure 3 is a perspective view of an example of a connector connector with central crimp contacts according to the invention;
    - Figure 4 is a perspective and exploded view of a connector according to the invention with the sub-assembly and the two half-shells to be assembled together around the conductive body of the sub-assembly and a cable whose wires are crimping inside the central contacts of the sub-assembly;
    - Figure 5 is a perspective view of the connector according to Figure 4 but with the two half-shells assembled together by crimping;
    - Figures 6A to 6E are perspective views showing the different stages of mounting a connector according to the invention to a wire cable to be crimped inside the central contacts of the connector sub-assembly;
    - Figure 7 is a perspective view mounting the connector mounted on the cable after the steps according to Figures 6A to 6E;
    - Figure 8 is a longitudinal sectional view of Figure 7, taken at the parts of the central contacts crimped around the bare wires of the cable;
    - Figure 9 is a perspective view from the rear of an electrical impedance matching part according to the invention, before its mounting in a body forming an electrical ground contact of the connector or in the space between the two half-shells assembled together;
    - Figures 10A and 10B are perspective views respectively of the rear and the front of a part according to Figure 9, after in a body forming electrical ground contact or in the space between the two half-shells assembled together;
    - Figures 1 IA to 1 IG are perspective views showing the different stages of mounting a connector and an impedance matching piece according to the invention to a cable with crimped wires inside central contacts of the connector sub-assembly;
    - Figures 12 and 13 are perspective views showing an alternative embodiment of the two half-shells according to the invention;
    - Figures 14A and 14B are perspective views showing the stages of assembly between them by crimping the two half-shells according to Figures 12 and 12 around the conductive body and the central contacts of the connector as well as around the cable to wires crimped in the central contacts;
    - Figure 15 is a perspective view mounting the connector mounted on the cable after the steps according to Figures 14A and 14B;
    - Figures 16A to 16C are perspective views showing the different stages of preparation of a cable with crimped wires;
    - Figure 17 is a longitudinal sectional view of a cable at the end of the steps according to Figures 16A to 16C, with insertion of an impedance adapter piece according to the invention;
    - Figure 17A is a cross-sectional view of a cable according to Figure 17;
    - Figure 18 is a longitudinal sectional view of a cable according to the state of the art, that is to say without impedance adapter piece according to the invention;
    - Figure 18A is a cross-sectional view of a cable according to Figure 18.
    Figures IA, IB and 2 relating to a connector according to the state of the art have been described in the preamble. They will therefore not be discussed below.
    It is specified here throughout the present application, the terms "lower", "upper", "above", "below", "interior", "exterior", "" internal "," external "are to be understood by reference to a connector according to the invention in substantially horizontal configuration.
    A connector 1 according to the invention firstly comprises a pre-mounted sub-assembly 2.
    This sub-assembly 2 is intended to be connected and mounted on a cable 3 with insulated wires 30, 31 from each other as illustrated in FIGS. 16A to 16C. More precisely, in the examples illustrated, this cable 3 comprises two wires each consisting of an electrically conductive core 30, 31 coated with a layer of electrical insulator 32, 33, and housed in a protective sheath 36. The wires are by construction surrounded by a metal strip 34 and a metal braid 35 ending at the end of cable 3.
    This subassembly 2 of connector comprises a metal body 20 holding within it an electrical insulating block 21 inside which are inserted central contacts 22, 23 comprising crimping portions 24, 25 which extend by being offset in projection towards the rear of the insulating block 21.
    As visible in FIG. 3, in the pre-assembled state and before crimping of the central contacts 22, 23, the crimping parts 24, 25 of the latter projecting are completely disengaged from the other components 20, 21 of the subassembly 2 In other words, their periphery is free from any surrounding part, which will allow crimping of the parts 24, 25 with large-width crimping jaws, as explained below.
    As illustrated in FIG. 4, the connector 1 according to the invention also comprises two metal half-shells 4, 5 intended to be assembled to each other around both the conductive body 20, the central contacts 22, 23 and of a part of the cable beyond the stripped ends of the cores of wires 30, 31, once the crimping parts 24, 25 of the contacts are crimped around the stripped ends of the wires.
    The upper half-shell 4 comprises a hollow body 40, the front of which has notches 4L
    The lower half-shell 5 comprises a hollow body 50 which comprises, from front to rear respectively, a first 51, second 52 and third 53 pairs of fixing lugs by crimping to the body 40 of the upper half-shell 4. The first and second pairs 51, 52 of crimping have the function of producing the connection between the two bodies 40, 50, while the third pair 53 has the further function of producing a grounding of the two half-shells 4 , 5 in compression on the metal braid 35 at the rear part 42 of the upper half-shell 4.
    The upper half-shell 5 also comprises, at the rear of its hollow body 50, a pair of lugs 54 for fixing by crimping around the sheath 36 of the cable.
    FIG. 5 shows a connector 1 according to the invention with the two half-shells 4, 5 assembled together by the different pairs of lugs 51, 52, 53, 54 crimped around the conductive body 20 and the central contacts 22, 23 crimped of the subassembly 2 as well as around the cable 3.
    A description will now be given with reference to FIGS. 6A to 6E, the different stages of mounting a cable 3 to a connector 1 according to the invention.
    Step a /: After having stripped the ends of the cores of wires 30, 31 of the cable and having separated them from one another, each of these ends is placed in the crimping part 24, 25 of a pre-mounted central contact 22, 23 of the sub-assembly 2 (FIG. 6A).
    Step b /: We then proceed to the positioning of the central contacts 22, 23 on a lower crimping jaw 6 (FIG. 6B).
    More specifically, the crimping parts 24, 25 of the central contacts 22, 23 are positioned in abutment against stops 60, 62 of the lower jaw 6 which are separated by a groove 61.
    Step c /: Then an upper crimping jaw 7 is moved towards and around the lower crimping jaw 6 according to a crimping force Fs, so as to crimp the central contacts 21, 22 around the stripped ends wire 30, 31 (Figure 6C).
    More specifically, the upper jaw 7 comprises two crimping grooves 70, 72 separated by a rib 71 of a shape complementary to the groove 61 of the lower jaw 6. When the upper jaw 7 moves towards the lower jaw 6, the grooves of crimping plastically deform the crimping parts 24, 25 of the central contacts 22, 23 and fold them around itself, trapped in the stripped parts of cores 30, 31 of the wires.
    Stage d /: Once the crimping of the bare parts of cores 30, 31 of the wires in the central contacts 22, 23 has been carried out, the two half-shells 4, 5 are positioned around the conductive body 20 and the central contacts 22, 23 crimped and a part of the cable beyond the stripped ends of the wires (Figures 6D, 6E).
    Step e /: The assembly of the connector 1 to the cable 3 is then completed, by assembling by crimping the two half-shells 4, 5 together.
    More specifically, the different pairs of crimping lugs 51, 52, 53, 54 of the lower half-shell 5 are crimped by plastic deformation of them to fold them respectively around the body 40 of the upper half-shell 4, and the metal braid 35 of the cable 3 (Figure 7). The cable 3 is then compressed by the pair of crimping lug 53 and the rear part 42 of the upper half-shell 4 and mechanically retained by the rear crimping pair 54.
    FIG. 8 shows that once the assembly has been carried out, the interior of the two half-shells 4, 5 closely matches the rear parts 24, 25 of the central contacts 22, 23 and of the cores 30, 31 of the wires with their electrical insulators around 32, 33. The electrical impedance is thus optimally adapted, which allows better transmission of the signals conveyed from or to the cores of the wires 30, 31 of the cable 3, with an increase in electrical performance.
    To further strengthen the impedance matching, the inventors have designed the impedance matching piece 8 as shown in Figures 9, 10A and 10B.
    Once placed inside the space at the rear, between the two metal half-hulls 4, 5, this part 8 makes it possible to create an electrical mass as close as possible to the cable 3, in order to preserve the integrity of the electrical signals carried from or to the cable wires 3.
    This impedance adaptation piece 8 extends along a longitudinal axis X and includes:
    - A front part 80 two housings 82, 84 whose shape has a continuous external profile and which internally defines two cylindrical housings 82, 84 each adapted to accommodate the part of a non-stripped cable wire 32, 33;
    a rear part 81, in the extension of the front part, the shape of which has a discontinuous external profile delimited by fins 83, 85 of shape complementary to that of the part of the non-stripped cable wire 32, 33 and adapted to be folded down by plastic deformation, around the latter.
    In the example illustrated, the cylindrical housings 82, 84 are joined by an open space. It is of course possible to have two separate housings 82, 84 separated by a rib.
    After folding down with plastic deformation of the fins 83, 85 these are brought closer to the interior of the part 8, as shown in FIGS. 10A and 10B.
    A description will now be given with reference to FIGS. 11A to 11 G, the different stages of mounting a cable 3 to a connector 1 according to the invention with insertion of an impedance adapter piece 8 according to the invention.
    Step ζΊ: After having stripped the ends of the cores of wires 30, 31 from the cable and having separated them from one another, we come to put in place the part 8 around the cores of wires 30, 31 (Figure 11 A) .
    More specifically, the cylindrical housings 82, 84 closely match the shape of the electrical insulators 32, 33 of the cable wires.
    Step a '': We then compress the adaptation part 8 around the insulators 32, 33. More precisely, at the front 80 of the part, we tighten the space between the cylindrical housings 82, 84 of so as to bring them together and put them in direct contact with the insulators 32, 33, and at the rear 81, the fins 83, 85 are folded down by deforming them on the insulators 32, 33 so that they conform to the curvatures of these (Figure 1 IB)
    Step a '' ': We then position each of these stripped ends of the cores of wires 30, 31 in the crimping part 24, 25 of a central contact 22, 23 of the subassembly 2, the adapter part being compressed to the back (Figure 1 IC).
    Step b7: The central contacts 22, 23 are then positioned on a lower crimping jaw 6, with the part 8 released from the jaw 6 (FIG. 11D).
    More specifically, the crimping parts 24, 25 of the central contacts 22, 23 are positioned in abutment against stops 60, 62 of the lower jaw 6 which are separated by a groove 61.
    Step c7: The displacement of an upper crimping jaw 7 is then made towards and around the lower crimping jaw 6 according to a crimping force Fs, so as to crimp the central contacts 21, 22 around the stripped ends d wire cores 30, 31 (Figure 11D).
    More specifically, the upper jaw 7 comprises two crimping grooves 70, 72 separated by a rib 71 of a shape complementary to the groove 61 of the lower jaw 6. When the upper jaw 7 moves towards the lower jaw 6, the grooves of crimping plastically deform the crimping parts 24, 25 of the central contacts 22, 23 and fold them around itself by trapping the bare parts 30, 31 of the wires and without damaging the adapter piece outside space between jaws 6, 7.
    Stage d /: Once the crimping of the bare parts of cores 30, 31 of the wires in the central contacts 22, 23 has been carried out, the two half-shells 4, 5 are positioned around the conductive body 20 and the central contacts 22 , 23 crimped and part of the cable beyond the stripped ends of the wires (Figures 11E, 11F).
    Step e ’/: The assembly of connector 1 to cable 3 is then completed, by assembling by crimping the two half-shells 4, 5 together.
    More precisely, the different pairs of crimping lugs 51, 52, 53, 54 of the lower half-shell 5 are crimped by plastic deformation of them to fold them respectively around the body 40 of the upper half-shell 4, and the metal braid 35 of the cable 3 (FIG. 1 IG). The cable 3 is then compressed by the pair of crimping lug 53 and mechanically retained by the rear pair of crimping 54.
    Figures 12 and 13 show an alternative embodiment of the two half-shells 4 ’, 5’, the hollow body 40 ’, 50’ of each of which supports one of the pairs of crimping lugs 51, 52, 53, 54.
    Figures 14A and 15B show similarly to Figures 11 E and 11F the assembly of these two half-shells 4 ', 5' together by crimping the crimp tabs 51, 52, 53, 54 around both the body conductor 20 and central contacts 22, 23 of the sub-assembly 2, wires with their cores 30, 31 and their insulators 32, 33, the impedance adaptation piece 8 and the metal braid 35 of the cable.
    Figure 15 shows the connector 1 once mounted on the cable 3 with the two half-shells 4 ’, 5’ assembled together.
    FIGS. 16A to 16C show the different stages of mounting an adapter piece 8 according to the invention in a body 10 forming an electrical ground contact of a cable 3 for conventional connector, without half-shell.
    The metal strip 34 initially surrounds the insulators 32, 33 of the conductive cores (FIGS. 16A).
    After having stripped this strip 34 and the ends of the cores of wires 30, 31, these are separated from one another (FIG. 16B).
    Then we proceed with the installation of the electrical adapter part as before, and we come to put around a body 10 forming a ground contact (Figure 16C).
    Figures 17 and 17A illustrate the resulting assembly.
    The metal adaptation piece 8 makes it possible to create a ground continuity, since the mass as close as possible to the cable 3, as is symbolized by the arrows in FIGS. 17 and 17A. The integrity of the electrical signal is therefore preserved, unlike the configuration according to the state of the art illustrated in FIGS. 18 and 18A, where it is clearly seen that in the absence of this part, the walls to ground 10 are further from the conductive cores 30, 31, and therefore, the impedance matching is not optimized.
    As shown in these Figures 17 and 17A, the adapter has a physical contact area with the body forming a ground contact 10, which guarantees the continuity of the electrical signal. This contact zone can be obtained by compression of the body forming a ground contact 10 on the part 8 or by welding between them.
    Other variants and advantages of the invention can be achieved without departing from the scope of the invention.
    The invention is not limited to the examples which have just been described; one can in particular combine together characteristics of the examples illustrated within variants not illustrated.
    权利要求:
    Claims (14)
    [1" id="c-fr-0001]
    1. Connector (1), intended to be connected to an electric cable (3) comprising at least two insulated wires each consisting of an electrically conductive core (30, 31) coated with a layer of electrical insulator (32, 33 ), and housed in a protective sheath (36), capable of integrating a metal strip (34), and / or a metal braid (35), the connector comprising:
    - a sub-assembly (2) comprising:
    • an electrically conductive body (20), • an electrical insulating block (21), housed in the conductive body, • at least two central contacts (22, 23), inserted in the insulating block, each central contact comprising a crimping part ( 24, 25), intended to be crimped around the conductive core of a wire stripped at its end, each crimping part projecting from the conductive body and from the insulating block, with its periphery free from any part of the conductive body and from the insulating block;
    - two electrically conductive half-shells (4, 5), intended to be assembled together around both the conductive body, the central contacts and part of the cable beyond the stripped ends of the wires , once the crimping parts of the contacts are crimped around the stripped ends of the wires.
    [2" id="c-fr-0002]
    2. Connector (1) according to claim 1, the two half-shells being of different shapes.
    [3" id="c-fr-0003]
    3. Connector (1) according to claim 1, the two half-shells being of identical shape.
    [4" id="c-fr-0004]
    4. Connector according to one of claims 1 to 3, the two half-shells being intended to be assembled together by welding, preferably by laser welding.
    [5" id="c-fr-0005]
    5. Connector according to one of claims 1 to 3, at least one of the two half-shells comprising one or more crimping lugs adapted to be crimped around the other half-shell and thus assemble the two half- shells together by crimping.
    [6" id="c-fr-0006]
    6. Connector (1) according to claim 5 in combination with claim 3, each of the two half-shells comprising one (of) crimping lugs, each crimping lug of a half-shell being arranged opposite a lug for crimping the other half-shell, so that once the crimping has been carried out, the tabs folded over the half-shells are wound around the half-shells on complementary peripheral portions.
    [7" id="c-fr-0007]
    7. Connector (1) according to one of claims 5 or 6, at least one crimping lug of one of the half-shells being further adapted to radially compress the other half-shell around the metal braid ( 35) of the cable.
    [8" id="c-fr-0008]
    8. Connector (1) according to one of claims 5 to 7, at least one of the demicoques comprising at least one additional crimping lug adapted to crimp around the cable, thus forming a cable retention element.
    [9" id="c-fr-0009]
    9. Connector (1) according to one of the preceding claims, further comprising an electrically conductive part (8) intended to guarantee an adaptation of electrical impedance when the connector is connected with the cable, the part comprising:
    - a front part (80) whose shape has a continuous external profile and which internally defines at least two housings (82, 84) each adapted to accommodate the part of a non-stripped cable wire;
    - A rear part (81), in the extension of the front part, whose shape has a discontinuous external profile delimited by fins (83, 85) of shape complementary to that of the part of the wire (32, 33) of a cable (3) not stripped and adapted to be folded down by plastic deformation, around the latter.
    [10" id="c-fr-0010]
    10. A method of mounting a connector (1) according to one of the preceding claims, on an electric cable (3) comprising at least two insulated wires (32, 33) each consisting of an electrically conductive core (30, 31 ), coated with a layer of electrical insulation, and housed in a protective sheath, comprising the following steps:
    a / placement of each of the stripped ends of cable wire in the crimping part of a pre-mounted central contact of the sub-assembly;
    b / positioning of the central contacts on a lower crimping jaw;
    c / displacement of an upper crimping jaw towards and around the lower crimping jaw, so as to crimp the central contacts around the stripped ends of wire;
    d / positioning of the two half-shells around the conductive body and the crimped central contacts and of a part of the cable beyond the stripped ends of the wires;
    e / assembly of the two half-shells together.
    [11" id="c-fr-0011]
    11. The method as claimed in claim 10, step e / being carried out by crimping by means of the crimping tab (s) of one or two half-shells of a connector according to one of claims 5 to 9.
    [12" id="c-fr-0012]
    12. The method of claim 11, comprising, during F step e /, a step fZ of crimping the crimp tab (s) of one of the half-shells around the other complementary half-shell on the braid wire.
    [13" id="c-fr-0013]
    13. Method according to one of claims 11 or 12, comprising, during step e /, a step g / of crimping the crimp tab or tabs around the cable to form Γ retention element of the latter .
    [14" id="c-fr-0014]
    14. Method for mounting a connector (1) according to one of claims
    11 to 13, step a / comprising the following steps:
    a '/ once the ends of the cores of wires (30, 31) of the cable have been stripped and these separated from one another, fitting of the electrically conductive part (8) around the cores of wires (30 , 31), so that the housings (82, 84) of the front part of the part (8) closely match the shape of the electrical insulators (32, 33) of the cable wires;
    a ”/: compression of the adaptation piece (8) around the insulators (32, 33), so as to bring the housings (82, 84) and put them in direct contact with the insulators (32, 33) , and at the rear (81) of the part (8), folding down by deforming the fins (83, 85) on the insulators (32, 33) so that they conform to the curvatures of the latter;
    a ’” /: placement of each of the stripped ends (30, 31) of cable wire in the crimping part of a pre-assembled central contact of the sub-assembly.
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    同族专利:
    公开号 | 公开日
    FR3074614B1|2019-11-01|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US20010049225A1|2000-05-24|2001-12-06|Kiyohiko Chiran|Angle type plug Connector|EP3783741A1|2019-08-20|2021-02-24|Aptiv Technologies Limited|Connector and assembly for automotive applications|
    EP3783756A1|2019-08-20|2021-02-24|Aptiv Technologies Limited|Connector for automotive applications and method of assembling thereof|
    CN112436342A|2019-08-20|2021-03-02|Aptiv技术有限公司|Assembly comprising a connector and a cable|
    WO2021156843A1|2020-02-07|2021-08-12|Te Connectivty Corporation|Protection member to protect resilient arms of a contact assembly from stubbing|
    法律状态:
    2018-11-26| PLFP| Fee payment|Year of fee payment: 2 |
    2019-06-07| PLSC| Publication of the preliminary search report|Effective date: 20190607 |
    2019-11-20| PLFP| Fee payment|Year of fee payment: 3 |
    2020-11-20| PLFP| Fee payment|Year of fee payment: 4 |
    2021-11-18| PLFP| Fee payment|Year of fee payment: 5 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1761704|2017-12-06|
    FR1761704A|FR3074614B1|2017-12-06|2017-12-06|CONNECTOR FOR CABLE WITH INSULATED ELECTRIC WIRES, COMPRISING A BODY HAVING CENTRAL CONTACTS IN A PROJECT AND TWO HALF-SHELLS ASSEMBLED BETWEEN THEM AROUND THE BODY AND CONTACTS SET ON THE WIRES|FR1761704A| FR3074614B1|2017-12-06|2017-12-06|CONNECTOR FOR CABLE WITH INSULATED ELECTRIC WIRES, COMPRISING A BODY HAVING CENTRAL CONTACTS IN A PROJECT AND TWO HALF-SHELLS ASSEMBLED BETWEEN THEM AROUND THE BODY AND CONTACTS SET ON THE WIRES|
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