• 专利附录
  • 专利说明
  • 权利要求
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    • 专利摘要:
    Microwave coaxial connector (1), intended to connect two printed circuit boards (PCB) together, with a central axis (X) comprising: - two connection elements (2, 3) each with a central contact and a ground contact , the earth (30) and central (31) contacts of the second element being free to move, along the axis (X), relative to those (20, 21) of the first element, between a disconnection configuration , and a connection configuration in which the elements are intended to establish an electrical ground and central contact between the two PCBs; - At least one electrically insulating washer (32), flexible, which allows both mechanical coaxial maintenance between each central contact inside the ground contact of the first or second connection element, and to establish a mechanical pressure between the end of the central contact and one of the two PCBs.
    公开号:FR3086108A1
    申请号:FR1858473
    申请日:2018-09-19
    公开日:2020-03-20
    发明作者:Christophe Meynier；Laurent Petit
    申请人:Radiall SA；
    IPC主号:
    专利说明:

    LOW-STEP MINIATURE COAXIAL HYPERFREQUENCY CONNECTOR, IN PARTICULAR FOR CONNECTING TWO PRINTED CIRCUIT BOARDS BETWEEN THEM
    Technical area
    The present invention relates to a microwave coaxial connector. Such a connector is intended in particular to connect two printed circuit boards (PCB acronym for "Printed Circuit Board") or a printed circuit board to another component such as a module or a filter.
    By “microwave connector” is meant here and within the framework of the present invention, a connector capable of ensuring the transmission of signals in the microwave range, for example at frequencies between 1 GHz and 20 GHz, or even up to 100GHz, in particular equal to 40 GHz.
    By "contact" is meant here and in the context of the present invention, an element made of electrically conductive material for letting the electric current pass.
    State of the art
    To establish a coaxial connection between two parallel printed circuit boards which are more or less close to one another, coaxial connectors are known, comprising a first cylindrical connector element intended to be fixed, by one end, to a first printed circuit board, and a second cylindrical connector element intended to come into contact, at one end, with a second printed circuit card, each connector element comprising a central contact and an external contact separated by an insulator, the contacts central and external of the first and second connector elements having mutually contacting cylindrical surfaces, elastic means being interposed between the first and second connector elements and urging the central and external contacts of the second connector element towards the second card printed circuit board.
    The first connector element can be mechanically fixed, in particular by soldering, to the first printed circuit board and the second card is brought into abutment against the second connector element which is moved relative to the first connector element, the contacts of the second element connector being pressed under the action of elastic means against the conductive areas provided on the second card.
    Thus, these elastic means are necessary to obtain a sufficient mechanical contact force, guaranteeing good electrical contact.
    Auxiliary means keep the second printed circuit board in position near the first printed circuit board, thus preventing the second connection element from disconnecting from the first connection element and from the second card printed circuit board.
    A connector of this type in which the elastic means are elastomer O-rings is described in US Pat. No. 6,699,054. The addition of O-rings makes the design of this connector complex.
    Patent application DE 102005033911 discloses a connector in which the elastic means consist of a central helical spring which also constitutes the central contact. A major drawback is that one of the ground contacts in the form of a solid cylinder is not really compressible, which does not guarantee a good electrical ground contact and to absorb relatively card-to-card tolerances important. In addition, the central spring induces an excessive inductance, unsuitable for the transmission of microwave signals.
    US patent 7416418 discloses a microwave coaxial connector, said card-to-card, in which a first spring is interposed axially between the conductive rods of the connection elements. A second spring is interposed axially between the conductive bodies of the connector element connection elements. The first connector member is attached to the first printed circuit board. When the second printed circuit board is brought against the second connection element, the springs push the rod and the body of the second connector element against the second printed circuit board, opposite the first connector element, so as to ensure satisfactory electrical contact between the second connector element and the second printed circuit board. The structure of this connector remains relatively complex.
    To overcome the drawback associated with the use of the two springs of US Pat. No. 7,416,418, the Applicant has proposed in patent application FR2994031 a new microwave coaxial connector of simpler structure.
    Embedded applications require board-to-board connection solutions with maximum integration densities while being lighter.
    Furthermore, existing coaxial connectors for board-to-board applications are not designed to have large displacement and compression tolerances over a wide range of heights.
    However, the inventors were confronted with a need for a microwave coaxial connector to connect two printed cards, separated by a distance (height) from card to card which can be between 3 to more than 20 mm, typically less than 1.5 mm, with tolerances on the distance between cards being up to 30% of this distance.
    In addition to the aforementioned drawbacks, most of the known coaxial connectors for board-to-board connections require a soldering process to fix each of the longitudinal ends of the connectors to a PCB. This solution is not satisfactory especially when a large number of connections is necessary because it requires too high alignment precision and involves mechanical stresses on each of the connectors.
    In addition, the temperature soldering process involves the risk of damaging the connector and nearby electronic components on the PCB when these connectors are larger and massive.
    There is therefore a need to further improve the board-to-board connections, in particular to allow installation with less, or even soldering, to compensate for high misalignment tolerances, to control the impedance with high microwave performance, d '' obtain connections for a large height range with equally large displacement and compression tolerances, to achieve maximum integration densities for a lower weight.
    The invention aims to meet all or part of this need.
    Statement of the invention
    According to one of its aspects, the subject of the invention is therefore a microwave coaxial connector, intended in particular to connect two printed circuit boards together, with a central axis (X) comprising:
    - a first connection element comprising a conductive body, forming a ground contact, and a conductive rod forming a central contact arranged inside the ground contact;
    - a second connection element comprising a conductive body, forming a ground contact, a conductive rod forming a central contact arranged inside the ground contact; the earth and central contacts of the second connection element being free to move, along the central axis (X), relative to those of the first connection element, between a disconnection configuration, and a connection configuration in which the first and second connection elements are intended to establish an electrical ground contact and a central electrical contact between the two PCBs;
    - at least one electrically insulating, flexible washer, which allows both coaxial mechanical holding between each central contact inside the earth contact of the first or second connection element, and to establish a mechanical pressure between the end of the central contact and one of the two PCBs.
    According to an advantageous embodiment, the coaxial connector comprises one or more elastic return means for establishing a mechanical pressure between the end of the ground contacts and the two PCBs, the elastic return means (s) being independent of the insulating washers.
    Preferably, each of the central contacts projects from its surrounding ground contact, in the connector disconnection configuration.
    According to an advantageous alternative embodiment, each electrically insulating washer is mounted in an internal groove inside the central contact which it maintains.
    Advantageously, each insulating washer has star-shaped recesses.
    Preferably, each insulating washer is made of polyimide.
    According to an advantageous installation configuration, the central contact and the earth contact of the first or of the second connection element are soldered to one of the PCBs.
    The invention also relates to a multichannel connector, comprising at least two coaxial connectors described above, which extend around two parallel central axes.
    According to an advantageous embodiment, the multi-channel connector comprises a strip arranged vertically and which projects laterally so as to hang the multi-channel connector in a dedicated cell of an interface plate.
    Finally, the invention has a connection module, intended in particular to connect two printed circuit boards (PCB) together, comprising:
    - An interface plate comprising a plurality of through cells, the interface plate being intended to be arranged between the two PCBs;
    - a plurality of connectors described above, housed individually in a cell of the interface plate.
    Thanks to the invention, a card-to-card connection can be made over a short distance over a wide range, typically between 3 and 20 mm, with tolerances on the distance between cards being up to 30% of this distance.
    The invention also makes it possible to reduce the size of each microwave link and therefore to reduce the pitch between two microwave links card to card. The invention makes it possible to achieve integration steps of the order of 2.5 mm and to significantly increase the number of card-to-card links.
    The size of this connection is very small and allows integration of very high density.
    In addition, the connector has large tolerances to axial misalignment.
    The “card to card” mounting using a coaxial connector according to the invention can be carried out without prior individual holding of the connector with one and / or the other of the printed circuit boards, in particular by soldering the body. first conductor outside one of the cards, preferably the lower one. In other words, the integration of a connector according to the invention can be simple and quick.
    It is specified here that of course the means for holding the connector beforehand on one and / or the other of the cards are clearly distinct from the elastic return means or in other words of the elastic mechanical holding of the central contacts and the ground contacts allowing maintaining the distance between cards in order to maintain the electrical connection.
    The contact force between each end of the central contacts and one of the two PCBs to be connected is constant regardless of the distance from the PCB, by the deflection of the electrically insulating washers which maintain a gap between the two central contacts and a pressure at the free end of each of them. This is very advantageous, especially in radar applications (Doppler effect).
    Similarly, the contact force with between each end of the ground contacts and one of the two PCBs to be connected is constant whatever the distance from the PCB thanks to the elastic return means. In addition, these elastic return means are judiciously arranged outside with respect to the HF line and do not in any way disturb the transmitted signal.
    In addition, these efforts on the ground contacts on the one hand and those on the central contacts on the other hand are independent thanks to the two systems independent of each other, the elastic return means on the outside for the ground contacts, and spring washers for central contacts. This guarantees constant and homogeneous radio frequency contact on PCB.
    The outer diameter of each coaxial connector can be greatly reduced, typically on the order of 2.5 mm, which achieves a high integration density.
    In addition, the external ground contacts being completely closed radially on themselves, i.e. over 360 °, the electrical contacts are homogeneous over the entire circumference of the contacts on the PCBs. The forces applied to the ground contacts by the elastic return means (helical, leaf springs) make it possible to maintain this homogeneity, whatever the conditions of use, in particular during mechanical vibrations. The performance of crosstalk and shielding to electromagnetic interference (EMI for “ElectroMagnetic Interferences”) is greatly improved, especially in the multi-channel versions of the connectors.
    A plurality of coaxial connectors according to the invention is integrated in through cells of an interface plate dedicated to be arranged between the two PCBs to be connected. More specifically, the coaxial connectors are positioned in the through cells of the interface plate before positioning the last of the two PCBs.
    In fact, it is advantageously possible to provide a well-adjusted shape of the cell so that the elastic mechanical holding means of the ground contacts (helical springs, leaf spring) are in contact with the internal wall of the cell and the friction is sufficient to keep the connector in the socket, even without the presence of PCBs.
    An interface plate connection system housing a plurality of coaxial connectors according to the invention has excellent crosstalk performance, each transmission channel being in its dedicated cell while being isolated from the others.
    The applications envisaged for a coaxial connector according to the invention are numerous, among which there may be mentioned, military and civil radar applications, space (observation satellites), telecommunications antenna networks, in particular for very high speed 5G .
    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:
    - Figure 1 shows a perspective view of a first example of a microwave coaxial connector according to the invention;
    - Figure 2 is another perspective view of the connector according to Figure 1;
    - Figure 2A is a longitudinal sectional view of the connector according to Figures 1 and 2;
    - Figure 3 is a perspective view of a variant of the coaxial connector according to Figures 1 to 2A;
    - Figure 4 shows in perspective view a second example of microwave coaxial connector, according to the invention;
    - Figure 5 is a perspective view of a variant of the coaxial connector according to Figure 4;
    - Figure 6 shows in longitudinal sectional view two single-channel coaxial connectors according to the invention in their respective cells of an interface plate arranged between two PCBs to be connected;
    - Figures 7A and 7B schematically represent the minimum necessary height of the central line of a coaxial connector respectively according to the state of the art and according to the invention;
    - Figures 8A and 8B schematically show a top view of a coaxial connector respectively according to the state of the art and according to the invention with the symbolized areas of generation of restoring forces that it generates;
    - Figures 9A and 9B show the diagrams of Figures 8A and 8B but for a plurality of coaxial connectors;
    - Figure 10 shows schematically another optimal arrangement of a plurality of coaxial connectors according to the invention with for each the symbolized areas of generation of restoring forces which it generates;
    - Figure 11 shows a perspective view in partial section of an example of a multi-channel microwave coaxial connector according to the invention.
    Throughout the present application, the terms "vertical", "lower", "upper", "bottom", "high", "below" and "above" are to be understood by reference with respect to a microwave coaxial connector in vertical configuration with the connection element 2 below the connection element 3.
    Similarly, the terms "internal" and "external" are to be understood with respect to the central axis X of the coaxial connector: an internal wall is located inside the connector and faces the axis, while a wall external is turned in an opposite direction, towards the outside of connector 1.
    For the sake of clarity, the same reference number is used for the same element of a coaxial connector according to the state of the art and of a coaxial connector according to the invention.
    A coaxial connector 1 according to the invention which will be described is capable of carrying microwave signals, that is to say signals in the frequency range between 1 GHz and 20 GHz, or even up to 100 GHZ, in particular equal to 40 GHz.
    FIG. 1 shows an example of a microwave coaxial connector 1 according to the invention.
    A microwave coaxial connector 1 according to the invention which extends around its central axis X, is provided for connecting two printed boards separated by a distance from card to card which may be small, but in a wide range, typically between 3 and 20 mm, with relatively large tolerances of around 30%.
    FIGS. 1 to 5 show a microwave coaxial connector 1 comprising a first connection element 2, adapted to cooperate with a second connection element 3.
    The second connection element 3 is free to move, along the central axis X, relative to the first connection element 2, between a disconnection configuration, and a connection configuration in which the connection elements 2, 3 establish a central electrical and ground contact between two printed circuit boards (PCBs).
    In the connection configuration, the central and ground contacts of the coaxial connector 1 establish the electrical contacts with compression.
    The first connection element 2 comprises a conductive body 20, which constitutes a ground contact, a conductive rod 21 which constitutes a central contact and at least one flexible electrically insulating washer 22, which in particular ensures the coaxial mechanical maintenance of the central contact 21 inside the ground contact 20, and also the transfer of the forces necessary for the compression of the two lower rigid ends 210 and upper 310 and of the conductive body 20.
    The conductive body 20, the conductive rod 21 and the flexible insulating washer 22 generally each have a symmetry of revolution about the axis X of the connector 1. This insulating washer 22 also performs an electrical insulating function in the microwave transmission line. . But the main insulator remains air, which makes it possible to reach an extremely low level of microwave losses.
    The body 20 has a general shape from its lower end 200 of a hollow cylinder of circular section, centered around the axis X which widens in the form of a truncated cone up to its upper end 201 formed by a plurality of elements shaped into petals.
    The rigid lower end 200 of the body 20 is intended to be in electrical and mechanical contact with a first of the printed circuit boards (PCB).
    The conductive rod 21 has a rigid lower end 210 in the form of a stud also intended to come into electrical and mechanical contact with the first PCB, and an upper end 211 in the form of a socket.
    The second connection element 3 for its part comprises a conductive body 30, which constitutes a ground contact, a conductive rod 31 which constitutes a central contact and at least one electrically insulating washer 32, flexible, which in particular ensures the coaxial mechanical maintenance of the central contact 31 inside the ground contact 30.
    The conductive body 30, the conductive rod 31 and the flexible insulating washer 32 each generally have a symmetry of revolution about the axis X of the connector 1.
    The body 30 has the general shape of a rigid hollow cylinder of circular section centered around the axis X from its upper end 300, to its lower end 301.
    The rigid upper end 300 of the body 30 is intended to be in electrical and mechanical contact with the second of the printed circuit boards (PCB).
    The conductive rod 31 is in the form of a rigid axis which has a rigid lower end 310 in the form of a stud intended also to come into electrical and mechanical contact with the first PCB.
    In the assembled configuration of the coaxial connector, illustrated in FIGS. 1 to 5, the rigid axis 31 is inserted with contact in the socket 21.
    Likewise, the electrical contact is guaranteed only by the upper end 201 of the ground contact 20 below, at the end of the prestressed petals in the lower end 301 of the ground contact 31 above. The clearance of the frustoconical part formed by the petals 201 inside the end 301 of the ground contact 30, forms a sort of ball joint.
    The microwave signal is then transmitted between the central line formed by the central contact 31 inserted in the socket 21 and the earth line formed by the earth contact 30 inserted in the other earth contact 20.
    In a configuration where the two PCBs to be connected are not perfectly parallel, this ball joint connection allows the geometric axes of the contacts 2, 3 not to be perfectly aligned and form an angle between them, without adversely affecting the quality of the electrical contacts on each PCB.
    According to the invention, the set of contacts is dimensioned so that each of the central contacts 21, 31 is necessarily projecting from its ground contact 20, 30 which surrounds it, when the coaxial connector 1 is in configuration of disconnection, that is to say at rest or in other words without mechanical stress on compression in view of a connection between two PCBs.
    Consequently, according to the invention, the coaxial connector 1 is provided with two independent systems for pressing the contacts by elastic return, ie one to guarantee the mechanical pressurization of the ground contacts 20, 30 against the two PCBs to be connected, the other for the mechanical pressurization of the central contacts 21, 31 against the two PCBs.
    According to the invention, the mechanical pressure for each of the electrical contacts between the end of a central contact and one or the other of the PCBs is guaranteed by the bending of one of the electrical insulating washers.
    Thus, the end 210 of the central contact 21 on the first PCB is guaranteed by the bending of at least one electrical insulating washer 22, while the end of the central contact 31 on the second PCB is guaranteed by the bending of at least minus an electrical insulating washer 32.
    Advantageously, the electrical insulating washers 22, 32 are mounted in internal grooves 202, 302 provided for this purpose inside the central contacts.
    Preferably, the insulating washers 22, 32 have star-shaped recesses which allows them to avoid any undesired deformation during their bending by bending to obtain the desired pressurization of the central contacts 21, 31. Thus, in the long term, the washers 22, 32 in a star do not undergo increased fatigue and / or tearing and their central hole thus perfectly maintains the central contact 21, in the axial position. Any cut that would linearize the fatigue areas related to the bending of the washers 22, 32 would also be interesting.
    More preferably, the electrically insulating washers 22, 32 are made of polyimide, of the Kapton® type. This material is perfectly suited to all thermal, electrical insulation and mechanical properties for the dual function of both coaxial mechanical holding of the central contacts and flexibility for mechanical pressure for the electrical contact of the central contacts on the two PCBs to connect.
    Also, according to the invention, the mechanical pressure for each of the electrical contacts between the end of a ground contact and one or the other of the PCBs is guaranteed by elastic return means by compression 4 distinct from the insulating washers. 22, and arranged outside the ground contacts 20, 30.
    In the examples illustrated in FIGS. 1 to 3, the compression means 4 are constituted by two helical springs 40, arranged diametrically opposite with respect to the ground contacts 20, 30. This arrangement makes it possible to guarantee a minimum space requirement of the connection, and therefore denser integration, while retaining sufficient compression forces to guarantee the electrical performance of the connection.
    More specifically, according to this embodiment, the coaxial connector 1 comprises two plates 23, 33 each coming to bear on an external shoulder of a ground contact. One of the ends of each helical spring 40 bears against one of the plates 23, and the other of the ends bears against the other of the plates 33.
    Advantageously, each plate 23, 33 comprises two holding rods 230, 330 around which the helical springs 40 are housed, in order to guide them.
    Preferably, in the connector disconnection configuration which corresponds to an absence of longitudinal forces on the contacts, the springs 40 are prestressed.
    As illustrated in FIGS. 4 and 5, a leaf spring 41 can be arranged in place of the two helical springs 40. More specifically, the spring 41 comprises two flexible blades 42 arranged head to tail, that is to say with their camber in opposite directions, and which are connected to each other at their ends 43. Each of the flexible blades 42 bears directly against one of the two ground contacts 20, 30.
    The advantage of a leaf spring 41 is that it eliminates the use of plates 23, 33 for supporting the coil springs 40.
    According to an advantageous alternative embodiment, illustrated in FIGS. 3 and 5, when the board-to-board distance of the two PCBs to be connected is greater, provision may be made to provide each ground contact 20, 30 with a one-piece extension 34 with this last.
    To make a card-to-card connection, a plurality of coaxial connectors 1 which have just been described are implemented.
    To do this, each coaxial connector 1 is housed individually in a through cell of an interface plate, to be arranged at the interface between the two PCBs to be connected.
    An example of parallel housing of two identical coaxial connectors 1 according to the invention is shown in FIG. 6.
    Each of the two connectors 1 is housed in a cell 50 of an interface plate 5 between the two printed circuits, PCB1, PCB2 to be connected.
    The external shape of the connector 1 depends on the cell 50 in which each connector 1 is housed.
    A diamond shape of the support plates 23, 33 or of a leaf spring 41, as illustrated in FIGS. 1 to 5, is advantageous because it allows a gain in bulk and therefore, in the end, it increases the integration density of the plurality of coaxial connectors 1.
    The arrangement outside of the elastic return means, ie the springs 4, for the ground contacts makes it possible to have a very small bulk in the axis perpendicular to the alignment of the springs relative to a solution according to the State of the art with a single coaxial spring inside, such as that of US Pat. No. 7,416,418. According to this smallest dimension axis, the connector can be inserted into walls of interface panel / plate 5 of very reduced thickness, typically of the order of 3 mm.
    The internal wall of the cells 50 serves as lateral guidance for the coil springs 40 but also for the leaf springs 4L
    In practice, the shape of the cells 50 can be adjusted as closely as possible to those of the springs 4 so that the latter are in individual contact with the internal wall of a cell 50 with sufficient friction to maintain each connector 1 in the cell. 50, even in the absence of PCBs.
    This is advantageous for mounting because we can have an assembled module,
    i.e. an interface plate 5 in the cells 50 from which the coaxial connectors 1 are mounted and held by friction.
    FIG. 7B schematically represents the height of a central contact 31 of a coaxial connector 1 according to the invention with an insulating washer 32 of height H2.
    FIG. 7A schematically represents the height of a central contact 31 of a coaxial connector 1 according to the state of the art with a central helical spring 40 of height H1 in its resting state.
    In the end, the height gain per end induced by the invention is equal to H2Hl.
    Thus, thanks to the invention, by decreasing the height of the central line, the card-to-card distance is reduced with respect to the connectors of the prior art where the helical spring arranged in the axis of the central contact forms with the latter a piston.
    FIG. 8A schematically represents a coaxial connector according to the state of the art with the coaxial location around the ground contacts 30 and central 31, of the single zone Z for generating restoring forces.
    FIG. 8B schematically represents a coaxial connector according to the invention with a location in two zones Z1, Z2 for generating restoring forces, due to the external arrangement of the elastic restoring means 4 of the ground contact 30.
    Figures 9A and 9B repeat these Figures 8A and 8B for a plurality of coaxial connectors.
    By comparing the configuration according to the invention (FIGS. 8B, 9B) to that according to the state of the art (FIGS. 8A, 9A), it is clear that, for the same transverse dimensions of the connector (external diameters of the ground contacts 30), the invention provides a densification of coaxial connectors in the plane parallel to the PCBs to be connected.
    We can also see in FIG. 9B, we can, by orienting the coaxial connectors according to the invention with respect to each other, go so far as to have the ground contacts 30 arranged almost edge-to-edge.
    FIG. 10 shows another arrangement with optimized overall dimensions of a plurality of connectors according to the invention for a card-to-card link.
    Such a connection between two PCBs takes place with a module assembled according to the invention, in the following manner.
    We put in place an assembled module as explained above, by approaching the two PCBs to be connected on both sides.
    The set of central contacts 21, 31 is then put under mechanical pressure by the bending deformation of the insulating washers 22, 32, until the end 210, 310 of the central contacts come in the plane defined by the ends 200 , 300 earth contacts 20, 30.
    All the ground contacts 20, 30 and central 21, 31 are then in mechanical and electrical contact with the two PCBs.
    Then, the coil springs 40 or leaf springs 41 are put under mechanical pressure, until the specified PCB spacing dimension is obtained with the desired adjustment tolerance.
    Thus, with the coaxial connectors 1 and a honeycomb interface plate for housing the coaxial connectors 1, it is possible to produce a seamless board-to-board.
    Each coaxial connector 1 illustrated in Figures 1 to 5 is single channel.
    It is possible to envisage multichannel coaxial connectors, in particular a two-way connector 10, as illustrated in FIG. 11.
    This two-way connector 10 comprises two coaxial connectors 1.1, 1.2 like those which have been described previously, which extend around two central axes XI, X2 parallel and between support plates 23, 33 common to the two connectors.
    A strip 6 arranged vertically and which projects laterally from one and / or the other of the support plates 23, 33 makes it possible to hang the multi-way connector 10 in its dedicated socket of the interface plate, if at least one of the two PCBs to be connected is not arranged below the connector 10.
    Other variants and improvements can be provided without departing from the scope of the invention.
    Thus, if in the examples illustrated, the coaxial maintenance of a central contact 21, 31 inside of its ground contact 20, 30 is ensured by an electric insulating washer 22, 32, it is entirely possible to envisage to double them, in particular as a function of the pressure forces of the central contacts 21, 31 that one wishes to assign to them.
    Also, if in the examples illustrated, the support plates 23, 33 of the coil springs 40 are parts clearly distinct from the ground contacts, it is equally possible to envisage that they are each in one piece with one of the ground contacts 20, 30.
    If the card-to-card connection which has been described with coaxial connectors 1 according to the invention and an interface plate with connector housing cells, makes it possible to produce a robust and complete card-to-card connection without welding, it is also possible to envisage soldering the contacts on one side, that is to say to one of the two PCBs to be connected.
    We can also consider wiring one side of the connector while the other side is connected to a PCB.
    The expression "comprising a" should be understood as being synonymous with "comprising at least one", unless otherwise specified.
    权利要求:
    Claims (11)
    [1" id="c-fr-0001]
    1. Microwave coaxial connector (1), intended in particular to connect two printed circuit boards (PCB) together, with a central axis (X) comprising:
    - a first connection element (2) comprising a conductive body (20), forming a ground contact, and a conductive rod (21) forming a central contact arranged inside the ground contact (20);
    - a second connection element (3) comprising a conductive body (30), forming a ground contact, a conductive rod (31) forming a central contact arranged inside the ground contact (30), the ground contacts (30) and central (31) of the second connection element (3) being free to move, along the central axis (X), relative to those of the first connection element (2), between a configuration of disconnection, and a connection configuration in which the first and second connection elements (2, 3) are intended to establish an electrical ground contact and a central electrical contact between the two PCBs;
    - at least one electrically insulating washer (32), flexible, which allows both coaxial mechanical holding between each central contact (21, 31) inside the ground contact (20, 30) of the first or second element connection, and to establish a mechanical pressure between the end (210, 310) of the central contact (21, 31) and one of the two PCBs.
    [2" id="c-fr-0002]
    2. Coaxial connector (1) according to claim 1, comprising one or more elastic return means (4, 40, 41) for establishing a mechanical pressure between the end (210, 310) of the ground contacts (20, 30) and the two PCBs, the elastic return means (4, 40, 41) being independent of the insulating washers (32).
    [3" id="c-fr-0003]
    3. Coaxial connector (1) according to claim 1 or 2, each of the central contacts (21, 31) projecting from its ground contact (20, 30) which surrounds it, in the connector disconnection configuration.
    [4" id="c-fr-0004]
    4. Coaxial connector (1) according to one of the preceding claims, each electrically insulating washer (22, 32) being mounted in an inner groove (202, 302) inside the central contact (21, 31) that it maintains.
    [5" id="c-fr-0005]
    5. Coaxial connector according to one of the preceding claims, each insulating washer (22, 32) having star-shaped recesses.
    [6" id="c-fr-0006]
    6. Coaxial connector (1) according to one of the preceding claims, each insulating washer (22, 32) being of polyimide.
    [7" id="c-fr-0007]
    7. Coaxial connector (1) according to one of the preceding claims, the central contact and the ground contact of the first or second connection element
    5 being soldered on one of the PCBs.
    [8" id="c-fr-0008]
    8. Multichannel connector (10), comprising at least two coaxial connectors (1.1, 1.2) according to one of the preceding claims, which extend around two parallel central axes (XI, X2).
    [9" id="c-fr-0009]
    9. Multichannel connector (10) according to claim 8, comprising a strip
    [10" id="c-fr-0010]
    10 (6) arranged vertically and which projects laterally so as to hang the multi-way connector (10) in a cell (50) dedicated to an interface plate (5).
    10. Connection module, intended in particular to connect two printed circuit boards (PCB) together, comprising:
    - an interface plate (5) comprising a plurality of through cells
    [11" id="c-fr-0011]
    15 (50), the interface plate being intended to be arranged between the two PCBs;
    - a plurality of connectors (1, 1.1, 1.2; 10) according to one of claims 1 to 9, housed individually in a cell (50) of the interface plate (5).
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    同族专利:
    公开号 | 公开日
    US20200091639A1|2020-03-19|
    FR3086108B1|2020-08-28|
    US10944193B2|2021-03-09|
    EP3627628A1|2020-03-25|
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    FR3086108B1|2018-09-19|2020-08-28|Radiall Sa|MINIATURE LOW STEP HYPERFREQUENCY COAXIAL CONNECTOR, INTENDED IN PARTICULAR FOR CONNECTING TWO PRINTED CIRCUIT BOARDS BETWEEN THEM|FR3086108B1|2018-09-19|2020-08-28|Radiall Sa|MINIATURE LOW STEP HYPERFREQUENCY COAXIAL CONNECTOR, INTENDED IN PARTICULAR FOR CONNECTING TWO PRINTED CIRCUIT BOARDS BETWEEN THEM|
    CN111509446A|2019-01-31|2020-08-07|泰科电子有限公司|Connector with a locking member|
    法律状态:
    2019-08-20| PLFP| Fee payment|Year of fee payment: 2 |
    2020-03-20| PLSC| Search report ready|Effective date: 20200320 |
    2020-08-19| PLFP| Fee payment|Year of fee payment: 3 |
    2021-08-19| PLFP| Fee payment|Year of fee payment: 4 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1858473|2018-09-19|
    FR1858473A|FR3086108B1|2018-09-19|2018-09-19|MINIATURE LOW STEP HYPERFREQUENCY COAXIAL CONNECTOR, INTENDED IN PARTICULAR FOR CONNECTING TWO PRINTED CIRCUIT BOARDS BETWEEN THEM|FR1858473A| FR3086108B1|2018-09-19|2018-09-19|MINIATURE LOW STEP HYPERFREQUENCY COAXIAL CONNECTOR, INTENDED IN PARTICULAR FOR CONNECTING TWO PRINTED CIRCUIT BOARDS BETWEEN THEM|
    EP19197551.5A| EP3627628A1|2018-09-19|2019-09-16|Low-pitch miniature hyperfrequency coaxial connector, intended in particular for mutually connecting two printed circuit boards|
    US16/574,173| US10944193B2|2018-09-19|2019-09-18|Miniature, low-pitch coaxial microwave connector, intended in particular to link two printed circuit boards to one another|
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