EP0197821A1 - Linking element between an electric conductor and a connector contact - Google Patents

Linking element between an electric conductor and a connector contact Download PDF

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Publication number
EP0197821A1
EP0197821A1 EP86400560A EP86400560A EP0197821A1 EP 0197821 A1 EP0197821 A1 EP 0197821A1 EP 86400560 A EP86400560 A EP 86400560A EP 86400560 A EP86400560 A EP 86400560A EP 0197821 A1 EP0197821 A1 EP 0197821A1
Authority
EP
European Patent Office
Prior art keywords
shape memory
active part
connection element
connection
element according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP86400560A
Other languages
German (de)
French (fr)
Inventor
Michel De Mendez
Raymond Bargain
Yves Dohan
Guy Herubel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FCI France SA
Original Assignee
Souriau et Cie
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from FR8504041A external-priority patent/FR2579379B1/en
Priority claimed from FR8508331A external-priority patent/FR2582868B2/en
Application filed by Souriau et Cie filed Critical Souriau et Cie
Publication of EP0197821A1 publication Critical patent/EP0197821A1/en
Withdrawn legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/01—Connections using shape memory materials, e.g. shape memory metal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S439/00—Electrical connectors
    • Y10S439/932—Heat shrink material

Definitions

  • the present invention relates to a connection element between an electrical conductor and the rear part of a connector contact.
  • a suitable system capable of ensuring a solid contact-conductor connection.
  • this system is part of the contact, which has at the rear a suitable shape to which the conductor is connected.
  • the connection techniques are diverse, crimping, soldering, electrical stripping, soldering or coiled connection (technique known by the English term "wrapping") or the like and the connection forms are also of varied geometries depending on these techniques. .
  • the object of the present invention is to remedy the aforementioned drawbacks by using a connection element between a conductor and a connector contact which can be used without using the usual connection techniques.
  • Another object of the present invention is the implementation of a connection element between an electrical conductor and a connector contact capable of being used regardless of the type of connector, in particular in the case of. hermetic connectors.
  • Another object of the present invention is the implementation of a connection element between an electrical conductor and a connector contact capable of being used whatever the type of connector, in particular whatever the place, even a small one, which are available for the implementation of the connector.
  • connection element between an electrical conductor and the rear part of a connector contact comprises a barrel intended to receive the electric cable and an active part, called a connection part, intended to ensure the electrical connection. and mechanical cohesion with contact.
  • the active part at least is made of a conductive shape memory material, the active part being shaped so as to be able to adapt closely to the rear part of the contact in a first shape memory state and to be able to ensure the release and / or the engagement of the element in a second state of shape memory.
  • connection element between an electrical conductor and the rear part of a connector contact comprises a barrel or connection zone 1, intended to receive the electric cable and an active part 2 called part of liaison.
  • barrel or connection area is meant in fact any mechanical part, cylindrical or not, capable of receiving the electric cable to ensure electrical contact and mechanical cohesion with it.
  • the active part 2 is intended to ensure the electrical connection and mechanical cohesion with the rear part of the connector contact.
  • the connecting element is shown in perspective in la and in top view in 1b.
  • the active part 2 at least consists of a conductive material with shape memory.
  • the active part 2 can, without limitation, be added by techniques such as brazing on the barrel 1 itself made of a conductive material with shape memory or not.
  • the active part 2 is shaped so as to be able to adapt closely to the rear part of the connector contact, in a first state of shape memory and to be able to ensure the release and / or the engagement of the connection element in a second state of shape memory.
  • the aforementioned shape memory states will be described in detail in the description below.
  • the first state of shape memory in which the electrical contact is ensured, is stable at room temperature.
  • the first shape memory state is also stable at low temperature, that is to say at the lowest temperatures of the operating specifications of the corresponding connector.
  • the first shape memory state is stable up to a temperature in the region of -65 ° C.
  • connection element object of the invention in its first form I memory state and in its second form II memory state, will be described in conjunction with FIG. 2.
  • the active part 2 and the barrel 1 can each be constituted by a substantially tubular element, connected by a common intermediate part 3.
  • the active part 2 comprises a slot 20 formed over the entire length of the latter.
  • the slot (20) can be formed according to a generator of the active part 2 or according to any particular conformation, such as a propeller or the like.
  • the tubular element constituting the active part 2 may have a conical section.
  • the separation between the barrel 1 and the part active 2 at the common intermediate part 3 appears as a slit or a transverse opening formed substantially in the middle part of the connecting element, as it also very clearly appears in FIGS. 1 a and 1 b.
  • the connecting element can be entirely made of a shape memory material.
  • the first shape memory state I appears, the active part 2 of the connection element being closely adapted to the contact 4 of the connector, while in its second shape memory state, referenced II , the part active 2 appears on the contrary deployed as shown in phantom.
  • the electrical cable secured to the barrel 1 has been referenced C.
  • the memory states of form I and II can, according to the invention, be either non-reversible or reversible.
  • the active part 2 will include reversible shape memory states, first state I, second state II.
  • the cable C having been connected to the barrel 1, for example in a conventional manner, that is to say by soldering, by crimping, or the like, setting state II of shape memory of the active part 2, allows the opening in the deployed position of this active part and placing the connection element in suitable position, relative to the contact 4 of the connector, for the implementation of the connection.
  • the setting in state II can be carried out by simply lowering the temperature of this active part 2, or of the whole of the connection element, by below the transition temperature of the shape memory material, temperature Ms, the temperature Ms being defined as the temperature at which the martensitic phase of the shape memory material considered begins to form by itself.
  • temperature Ms the temperature at which the martensitic phase of the shape memory material considered begins to form by itself.
  • any lowering of the temperature to a lower temperature such as in particular the temperature Mf defined as the temperature at which all of the shape memory material is transformed into the martensitic phase, does not depart from the scope of the present invention.
  • the required temperature drop can be caused by any cold source normally available in an industrial environment.
  • connection element in the form II state being suitably disposed relative to the contact 4 of the connector, the latter is maintained in its relative position relative to the aforementioned contact 4, and subjected to heating by simple removal of the cold source .
  • suitable arrangement of the connection element relative to the contact 4 is meant, for example in the case where the contact 4 is provided with a flange 40, the positioning of the active part 2 and of the barrel 1 so that the flange 40 comes to engage in the transverse slot or opening existing between the barrel 1 and the active part 2 at the level of the common part 3.
  • the normal heating of the connection element and mainly of the active part 2 has for effect of bringing the aforementioned active part back into memory state I, as shown in FIG. 2.
  • connection element at the temperature of use of the connector, the electrical contact between the connection element and the contact 4 of the connector is ensured at the level in particular of the active part 2 of the connection element, which furthermore, due to the tightening of the contact 4 in this position, also ensures the mechanical cohesion of the assembly.
  • connection can thus be carried out repetitively, practically without wear.
  • the closure of the active part on the contact 4, at the operating temperature, that is to say in fact the passage of the active part 2 of its deployed position II, obtained for example also by lowering the temperature, in position I after the heating is then final.
  • the shape memory material is chosen from the group of nickel-titanium, nickel-aluminum, nickel-titanium-iron, copper-zinc-aluminum, copper-aluminum-nickel compounds in the form of an intermetallic compound or under allied form.
  • a connection element in accordance with the object of the present invention has been produced from an alloy comprising substantially 4% aluminum, 28% zinc, the rest of the percentage being constituted by copper, the percentages given being understood as an atomic percentage.
  • the transition temperature Ms obtained with this type of alloy is close to -80 ° C.
  • connection element An example of implementation of a connection element according to the invention will now be described by means of FIGS. 3a and 3b.
  • the connecting element can be obtained from a sheet of the aforementioned alloy, cut as shown in FIG. 3a substantially according to an H shape.
  • the cut sheet is then subjected to a mechanical treatment by rolling , so as to constitute the barrel 1 and the active part 2, in the form of a tube substantially.
  • the processing by rolling is referenced R and it will be noted that, with respect to the longitudinal axis of symmetry YY of the sheet, one of the branches of the H is less than the other branch, so to be formed at the level of the active part 2, the slot 20 after rolling as it appears moreover in FIG. 3b.
  • connection element As shown in FIG. 3b, an example of processing a connection element according to the invention will now be described with a view to obtaining the first I and second II reversible shape memory states mentioned above.
  • connection element which is the subject of the invention has been shaped to the final shapes and dimensions constituting the first state I of shape memory as shown in FIG. 3b.
  • the connection element is then subjected to a heat treatment capable of bringing it into a crystallographic phase state of the austenitic type and then to cooling to a temperature close to ambient temperature.
  • cooling is meant cooling such as that obtained by means of a treatment of the soaking type for example, so as to avoid the occurrence; parasitic crystallographic phase rition.
  • connection element of the invention is then subjected in at least one deformation zone thereof, mainly the active part 2 thereof, to a so-called education process.
  • the deformation zone is denoted 105 and appears located in the vicinity of the intersection of the diametrical plane of longitudinal symmetry of the active part 2, containing the longitudinal axis of symmetry YY, and of the active part 2.
  • the education process consists in repeatedly imposing on the active part 2, a mechanical stress, such that the active part is, in this deformation zone 105, deformed so as to bring the lobes constituting the active part 2 into a shape position. close to the second form II memory state, and to subject the assembly, the constraint being maintained, to a lowering of temperature capable of bringing the active part 2 or the whole of the connection element into the martensitic phase state .
  • the lowering of temperature can be achieved by means of any cold source applied either to the whole of the connection element, or only at the level of the deformation zone 105.
  • the mechanical stress can be applied by means a tool allowing sufficient spacing of the lobes of the active part 2 above jusnu'à obtain D osition desired shape memory.
  • the connection element After removal of the mechanical stress, the connection element is subjected to a gradual warming up to ambient temperature. It then resumes its stable shape state or first shape memory state.
  • the repetition of the cycle imposed for education, as defined above, must be sufficient to obtain a good degree of reproducibility of the transitions between the first and the second state of subsequent shape memory, by lowering the temperature only and then by raising successive temperature for return to the position or state of initial shape memory.
  • the process consists of. impose in the absence of deformation on the object, constituted by the connecting element shaped in its initial state, a thermal stress consisting of a temperature variation capable of bringing the contact element, or at least the active part 2 thereof, in the martensitic crystallographic phase state. Then, the active part 2 being in the stateprecited, a mechanical stress, such that the active part 2 is deformed. is applied so as to bring this active part 2 into a position or shape state close to the second shape memory state II.
  • the temperature reduction and the application of the mechanical stress can be carried out using the means already mentioned, the application of the mechanical stress being able to be carried out in the liquid nitrogen bath when the cold source is constituted by such a bath.
  • intermediate state of form close to the initial state of form of the active part 2
  • the imposition of the intermediate form on the active part 2 is carried out by imposition of the limits of subsequent change of form thereof to the corresponding limits of the state of intermediate form.
  • intermediate shape state close to the initial shape state means a shape state in which the return to the initial state has been obtained or to a shape close to that of the initial state.
  • the definition and the imposition of the limits for changing the shape of the active part 2 can be carried out by means of a mandrel introduced into the active part 2, the mandrel having external dimensions corresponding to the dimensions of the state of intermediate form. .
  • the active part 2 in martensitic state on which the shape change limits have been imposed is then subjected to a gradual warming up to ambient temperature to bring it back into a crystallographic phase state of austenitic type. Due to the maintenance of the active part 2 in the intermediate form state and the heating, internal constraints allowing the definition of the intermediate form state as the first form I memory state are then induced in the active part 2.
  • connection elements of substantially similar shape can be obtained from shape memory materials, delivered in the form of rods, cylindrical ingots or the like by milling, turning, drilling and any conventional machining operation.
  • the barrel 1 itself, may include, as shown in FIGS. 4a and 4b, a first I and a second II state of shape memory.
  • the barrel 1 for example is shaped so as to be able to adapt closely to the cable C in its first state of shape memory, and so as to allow the engagement and / or release of the cable C in its second state of shape memory.
  • FIG. 4a representing the second form II memory state of the barrel 1, it appears in the flared position, allowing easy introduction of the cable C into the barrel, in order to allow the corresponding electrical connection.
  • the flared position can be obtained by lowering the temperature of the barrel 1, below the transition temperature Ms of the alloy constituting the connecting element.
  • the presence on the internal face of the barrel 1 will also be noted of roughness denoted 10, which in shape II memory position, that is to say in flared position, do not oppose of course when the cable C is introduced into the barrel.
  • the cable being introduced, the drum 1 is subjected to heating in order to bring it back to its shape I memory position, as shown in FIG. 4b.
  • the shape memory position I is a tightened position of dimension substantially similar to that of the active part 2 in the same position I.
  • the shape memory position I allows the mechanical fixing of the cable C and the corresponding electrical connection, because tightening thus achieved.
  • the asperities 10 previously cited then have the role of ensuring better electrical contact with the cable, as well as better mechanical cohesion. This type of connection can of course be made in the case of insulation displacement connection.
  • such asperities perforate the insulator and provide electrical contact with the cable as well as mechanical retention.
  • connection element has thus been described, in which the above mechanical structures are not limiting. Indeed, the transverse slit or opening, located at the level of the common part 3, can obviously be replaced or supplemented by any rib or the like located substantially at the level of a guideline of the active part, and intended to engage in a corresponding slot or opening of the contact 4, to ensure electrical contact and the corresponding mechanical cohesion.
  • connection element of the invention is remarkable in that it makes it possible to provide the electrical connection or connection with the contact of the connector, without any filler metal and without the use of bulky tools.
  • the transition from one shape memory state to the other shape memory state, the deployed state can be carried out outside the connector during assembly of the connection element, the temperature at which the latter is brought is chosen to be much lower than the transition temperature Ms of the alloy constituting the connection element and the thermal inertia of the connection element being sufficient to allow maintenance in the deployed shape memory state.
  • the positioning of the connection element on the connector contact can then be carried out without difficulty before heating and returning to the initial shape memory state. In the case of a disconnection, it suffices for example to bring the whole of the connector, or even simply the connection which one wishes to disconnect, to a temperature below the transition temperature of the alloy.
  • the connecting element of the invention may comprise at least at the active part, a conductive protective coating consisting of a deposit of gold, silver, palladium alloy or tin-lead.
  • a conductive protective coating consisting of a deposit of gold, silver, palladium alloy or tin-lead. This latter coating can in fact be used as an extension of its usual field of use, since there is practically no more problem of friction or wear at the level of the connection element.
  • connection element described above can be implemented in order to allow a technique for connection to the electric conductor cable, other than direct contact or displacement of insulation, technique such as the wound connection. known by the English term "wrapping".
  • the active part of the element comprising the essential characteristics described above, the barrel itself is constituted by a rod known as a "wrapper", that is to say a rod for making a coiled connection.
  • the barrel is itself made of a conductive material with shape memory, the entire connecting element of the invention being made of the same material.
  • connection element between an electrical conductor and the rear part of a connector contact in accordance with the invention, comprises a barrel denoted 1 constituted by a rod allowing the connection of the conductor by the technique of coiled connection.
  • the so-called coiled connection has been defined in French standard NF C93021.
  • the wound connection has been defined in this standard as keep a wire, a terminal and a winding tool.
  • This connection ensures a seamless mechanical and electrical connection between a wire with a solid round conductor and a suitable terminal with projecting edges by helical winding under a certain voltage of a certain size of the conductor on the terminal.
  • the voltage in the wound conductor seals the contact surfaces of the conductor and of the terminal by pressure, thus avoiding corrosion of these areas which would cause a variation in the contact resistance.
  • the active part 2 of the connection element consists of a conductive material with shape memory.
  • shape memory materials mention may be made of all of the materials previously designated,
  • the rod 1 is constituted by an element of substantially square section and having edges with sharp angles in order to allow the realization of the connection in accordance with the specifications of the aforementioned standard.
  • connection element object of the invention
  • the connecting element which is the subject of the invention can be obtained by the machining methods as described above, in particular from a strip of material by cutting and winding.
  • the active part 2 is subjected to a so-called education process in accordance with the corresponding characteristics of the active part 2 as described. previously.
  • the active part 2 comprises substantially a first tubular part 21 substantially cylindrical having a slot 20 over the entire length of one of its generatrices.
  • the active part 2 comprises a second substantially tubular and cylindrical part mechanically connected to the first part 21 by an intermediate element 3.
  • the second part 22 is further adapted to ensure the mechanical connection with the rod 1 making it possible to make the wound connections.
  • the second part 22 is provided at its end opposite to the intermediate element with a frustoconical termination 24 starting point of the rod 1.
  • the rod 1 is then brought to the level of the frustoconical termination 24 and fixed to that -this by means of spot welding for example.
  • the rod 1 and the frustoconical termination 24 may be made up of a single element, the frustoconical termination 24 then being added by spot welding to the second tubular part 22.
  • connection element object of the invention has been shown placed in position around a contact 4.
  • the element connection, or the active part 2 thereof is firstly cooled to a temperature below the transition temperature of the alloy constituting the element or the active part.
  • the thermal stress thus created at the level of the active part 2 of the connection element has the effect of bringing the latter back into shape II memory state, that is to say in the deployed position.
  • the active part 2 being placed at the level of the contact and in particular at the level of the boss 40 formed for this purpose on the contact 4, the heating of the connection element and of the active part 2 allows the active part 2 to be put in place and to be closed in accordance with FIG. 6a on the contact 4.
  • the shape of the contact section 4 at the active part 2 can also be adapted in order to improve the quality of the connection and to avoid rotation of the connection element with respect to the longitudinal axis of the contact.
  • the boss 40 may be provided with a notch or housing in which the intermediate part 3 in fact connecting the first tubular part 21 to the second tubular part 22 comes to engage. It is thus possible to ensure a locking of the connection element in rotation relative to the longitudinal axis of the contact.
  • the housing 41 formed at the boss 40 and in which engages the intermediate part 3 has been shown.
  • connection element thus described appears to be particularly suitable for use on contacts of hermetic or similar sockets as shown in FIG. 6b.
  • this type of connectors or sockets the usual connection techniques and in particular, the connection by coiled connection directly carried out on the contact 4 cannot be carried out because of the small volume available for implementing this type of connection by means of the tools. appropriate and in particular due to the small size of the space available around each contact in the vicinity of the insulating wall 6 of the rear part of the connector.
  • the alloys capable of a good glass / metal sealing in order to ensure good hermeticity no longer have, after passing through the oven at 750 ° C / 800 ° C for example for sealing, mechanical characteristics sufficient to resist in torsion in the winding of the conducting wire which still justifies the interest of an attached part or connection element as defined in the present application.

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  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)

Abstract

L'invention concerne un élément de raccordement entre un conducteur électrique et un contact de connecteur. L'élément comporte un fût (1) destiné à recevoir le câble électrique (C) et une partie active (2) de contact destinée à assurer la connexion électrique et la cohésion mécanique avec le contact (4). La partie active (2) au moins est constituée en un matériau conducteur à mémoire de forme et est conformée de façon à pouvoir s'adapter étroitement au contact (4) dans un premier état de mémoire de forme, et à pouvoir assurer le dégagement et/ou l'engagement de l'élément dans un deuxième état de mémoire de forme. Application aux connecteurs hermétiques et autres connecteurs à contact non démontables.The invention relates to a connection element between an electrical conductor and a connector contact. The element comprises a barrel (1) intended to receive the electric cable (C) and an active part (2) of contact intended to ensure the electrical connection and the mechanical cohesion with the contact (4). At least the active part (2) is made of a conductive shape memory material and is shaped so as to be able to adapt closely to the contact (4) in a first shape memory state, and to be able to ensure the release and / or the engagement of the element in a second state of shape memory. Application to hermetic connectors and other non-removable contact connectors.

Description

La présente invention est relative à un élément de raccordement entre un conducteur électrique et la partie arrière d'un contact de connecteur. Pour raccorder le contact d'un connecteur à un conducteur de courant électrique, il est nécessaire de prévoir un système adapté capable d'assurer une liaison solidaire contact-conducteur. De manière générale, ce système fait partie du contact, lequel possède à l'arrière une formee adaptée sur laquelle le conducteur vient se raccorder. Les techniques de raccordement sont diverses, sertissage, brasure, audo-dénudage soudure électrique ou connexion enroulée (technique connue sous le vocable anglo-saxon de "wrapping") ou analogues et les formes de raccordement sont également de géométries variées en fonction de ces techniques.The present invention relates to a connection element between an electrical conductor and the rear part of a connector contact. To connect the contact of a connector to an electrical current conductor, it is necessary to provide a suitable system capable of ensuring a solid contact-conductor connection. In general, this system is part of the contact, which has at the rear a suitable shape to which the conductor is connected. The connection techniques are diverse, crimping, soldering, electrical stripping, soldering or coiled connection (technique known by the English term "wrapping") or the like and the connection forms are also of varied geometries depending on these techniques. .

% . Cependant, avec certains types de connecteurs, cas de connecteurs comportant des contacts non démontables fixés solidairement dans le connecteur, la plupart des techniques précitées ne peuvent être employées. Eh outre, certaines techniques de raccordement ne peuvent être utilisées du fait du volume disponible pour mettre en oeuvre le connecteur ou du fait des conditions d'emploi de celui-ci comme dans le cas des connecteurs hermétiques pour lesquels, pour une question d'encombrement ou d'environnement, on ne peut utiliser une des techniques précitées. % . However, with certain types of connectors, in the case of connectors comprising non-removable contacts fixed integrally in the connector, most of the abovementioned techniques cannot be used. In addition, certain connection techniques cannot be used because of the volume available for implementing the connector or because of the conditions of use thereof as in the case of hermetic connectors for which, for reasons of space. or environment, one cannot use one of the aforementioned techniques.

La présente invention a pour but de remédier aux inconvénients précités par la mise en oeuvre d'un élément de raccordement entre un conducteur et un contact de connecteur utilisable sans faire appel aux techniques de raccordement habituelles.The object of the present invention is to remedy the aforementioned drawbacks by using a connection element between a conductor and a connector contact which can be used without using the usual connection techniques.

Un autre objet de la présente invention est la mise en oeuvre d'un élément de raccordement entre un conducteur électrique et un contact de connecteur susceptible d'être utilisé quel que soit le type de connecteur, notamment dans le cas des. connecteurs hermétiques.Another object of the present invention is the implementation of a connection element between an electrical conductor and a connector contact capable of being used regardless of the type of connector, in particular in the case of. hermetic connectors.

Un autre objet de la présente invention est la mise en oeuvre d'un élément de raccordement entre un conducteur électrique et un contact de connecteur susceptible d'être utilisé quel que soit le type de connecteur, notamment quelle que soit la place, même minime, dont on dispose pour la mise en oeuvre du connecteur.Another object of the present invention is the implementation of a connection element between an electrical conductor and a connector contact capable of being used whatever the type of connector, in particular whatever the place, even a small one, which are available for the implementation of the connector.

L'élément de raccordement entre un conducteur électrique et la partie arrière d'un contact de connecteur, objet de l'invention, comporte un fût destiné à recevoir le câble électrique et une partie active, dite de liaison, destinée à assurer la connexion électrique et la cohésion mécanique avec le contact. Il est remarquable en ce que la partie active au moins est constituée en un matériau conducteur à mémoire de forme, la partie active étant conformée de façon à pouvoir s'adapter étroitement à la partie arrière du contact dans un premier état de mémoire de forme et à pouvoir assurer le dégagement et/ou l'engagement de l'élément dans un deuxième état de mémoire de forme.The connection element between an electrical conductor and the rear part of a connector contact, object of the invention, comprises a barrel intended to receive the electric cable and an active part, called a connection part, intended to ensure the electrical connection. and mechanical cohesion with contact. It is remarkable in that the active part at least is made of a conductive shape memory material, the active part being shaped so as to be able to adapt closely to the rear part of the contact in a first shape memory state and to be able to ensure the release and / or the engagement of the element in a second state of shape memory.

L'invention sera mieux comprise à la lecture de la description et à l'observation des dessins ci-après dans lesquels les cotes et proportions relatives des différents éléments n'ont pas été respectées afin de ne pas nuire à la compréhension de l'ensemble et où :

  • . Les figures 1a et 1b représentent respectivement une vue en perspective et une vue de dessus de l'élément de raccordement de l'invention,
  • . La figure 2 représente un élément de raccordement, objet de l'invention en position sur le contact d'un connecteur,
  • . Les figures 3a et 3b illustrent un procédé de réalisation d'un élément de raccordement objet de l'invention,
  • . Les figures 4a et 4b représentent une variante de réalisation d'un élément de raccordement selon l'invention.
  • . la figure 5a représente, en perspective, un élément de raccordement selon l'invention,
  • .la figure 5b représente une vue de dessus de la figure 5a,
  • .la figure 6a représente un élément de raccordement selon l'invention mis en place sur la partie arrière d'un contact,
  • . la figure 6b représente une vue en coupe longitudinale de la figure 6 a.
The invention will be better understood on reading the description and on observing the drawings below in which the dimensions and relative proportions of the various elements have not been respected so as not to interfere with the understanding of the whole. and or :
  • . Figures 1a and 1b respectively represent a perspective view and a top view of the connecting element of the invention,
  • . FIG. 2 represents a connection element, object of the invention in position on the contact of a connector,
  • . FIGS. 3a and 3b illustrate a method for producing a connection element which is the subject of the invention,
  • . Figures 4a and 4b show an alternative embodiment of a connecting element according to the invention.
  • . FIG. 5a represents, in perspective, a connection element according to the invention,
  • FIG. 5b represents a top view of FIG. 5a,
  • FIG. 6a represents a connection element according to the invention placed on the rear part of a contact,
  • . Figure 6b shows a longitudinal sectional view of Figure 6a.

Ainsi que représenté en figure 1, l'élément de raccordement entre un conducteur électrique et la partie arrière d'un contact de connecteur, comporte un fût ou zone de raccordement 1, destiné à recevoir le câble électrique et une partie active 2 dite partie de liaison. Par fût ou zone de raccordement, on entend en fait toute pièce mécanique, cylindrique ou non, susceptible de recevoir le câble électrique pour assurer le contact électrique et la cohésion mécanique avec celui-ci. La partie active 2 est destinée à assurer la connexion électrique et la cohésion mécanique avec la partie arrière du contact du connecteur. Sur les figures la et 1b, l'élément de raccordement est représenté en perspective en la et en vue de dessus en 1b.As shown in FIG. 1, the connection element between an electrical conductor and the rear part of a connector contact, comprises a barrel or connection zone 1, intended to receive the electric cable and an active part 2 called part of liaison. By barrel or connection area is meant in fact any mechanical part, cylindrical or not, capable of receiving the electric cable to ensure electrical contact and mechanical cohesion with it. The active part 2 is intended to ensure the electrical connection and mechanical cohesion with the rear part of the connector contact. In Figures la and 1b, the connecting element is shown in perspective in la and in top view in 1b.

La partie active 2 au moins est constituée en un matériau conducteur à mémoire de forme. Par exemple, la partie active 2 peut, de manière non limitative, être rapportée par des techniques telles que le brasage sur le fût 1 constitué lui-même en un matériau conducteur à mémoire de forme ou non. La partie active 2 est conformée de façon à pouvoir s'adapter étroitement à la partie arrière du contact du connecteur, dans un premier état de mémoire de forme et à pouvoir assurer le dégagement et/ou l'engagement de l'élément de raccordement dans un deuxième état de mémoire de forme.The active part 2 at least consists of a conductive material with shape memory. For example, the active part 2 can, without limitation, be added by techniques such as brazing on the barrel 1 itself made of a conductive material with shape memory or not. The active part 2 is shaped so as to be able to adapt closely to the rear part of the connector contact, in a first state of shape memory and to be able to ensure the release and / or the engagement of the connection element in a second state of shape memory.

Les états de mémoire de forme précités seront décrits en détail dans la description ci-après. Le premier état de mémoire de forme, lors duquel le contact électrique est assuré, est stable à la température ambiante. De même, le premier état de mémoire de forme est en outre stable à basse température, c'est-à-dire aux températures les plus basses du cahier des charges de fonctionnement du connecteur correspondant. A titre d'exemple, le premier état de mémoire de forme est stable jusqu'à une température voisine de -65°C.The aforementioned shape memory states will be described in detail in the description below. The first state of shape memory, in which the electrical contact is ensured, is stable at room temperature. Likewise, the first shape memory state is also stable at low temperature, that is to say at the lowest temperatures of the operating specifications of the corresponding connector. For example, the first shape memory state is stable up to a temperature in the region of -65 ° C.

La structure de l'élément de raccordement, objet de l'invention dans son premier état de mémoire de forme I et dans son deuxième état de mémoire de forme II, sera décrite en liaison avec la figure 2.The structure of the connection element, object of the invention in its first form I memory state and in its second form II memory state, will be described in conjunction with FIG. 2.

Ainsi que représenté sur cette figure, la partie active 2 et le fût 1 peuvent être constitués chacun par un élément sensiblement tubulaire, relié par une partie intermédiaire commune 3. La partie active 2 comporte une fente 20 ménagée sur toute la longueurde celle-ci. A titre d'exemple non limitatif, la fente (20) peut être ménagée selon une génératrice de la partie active 2 ou selon toute conformation particulière, telle qu'une hélice ou analogue. En outre, l'élément tubulaire constituant la partie active 2 peut avoir une section conique. La séparation entre le fût 1 et la partie 'active 2 au niveau de la partie intermédiaire commune 3 apparait comme une fente ou une ouverture transversale ménagée sensiblement dans la partie médiane de l'élément de raccordement, ainsi qu'il apparait très clairement également sur les figures la et 1b. En outre, de préférence, l'élément de raccordement peut en totalité être constitué en un matériau à mémoire de forme. Sur la figure 2, le premier état de mémoire de forme I apparait, la partie active 2 de l'élément de raccordement étant étroitement adaptée au contact 4 du connecteur, alors que dans son deuxième état de mémoire de forme, référencé II, la partie active 2 apparaît au contraire déployée ainsi que représentée en traits mixtes. Sur la figure 2, le câble électrique solidaire du fût 1 a été référencé C.As shown in this figure, the active part 2 and the barrel 1 can each be constituted by a substantially tubular element, connected by a common intermediate part 3. The active part 2 comprises a slot 20 formed over the entire length of the latter. By way of nonlimiting example, the slot (20) can be formed according to a generator of the active part 2 or according to any particular conformation, such as a propeller or the like. In addition, the tubular element constituting the active part 2 may have a conical section. The separation between the barrel 1 and the part active 2 at the common intermediate part 3 appears as a slit or a transverse opening formed substantially in the middle part of the connecting element, as it also very clearly appears in FIGS. 1 a and 1 b. In addition, preferably, the connecting element can be entirely made of a shape memory material. In FIG. 2, the first shape memory state I appears, the active part 2 of the connection element being closely adapted to the contact 4 of the connector, while in its second shape memory state, referenced II , the part active 2 appears on the contrary deployed as shown in phantom. In Figure 2, the electrical cable secured to the barrel 1 has been referenced C.

Les états de mémoire de forme I et II peuvent, conformément à l'invention, être soit non réversibles, soit réversibles. De préférence, la partie active 2 comportera des états de mémoire de forme, premier état I, deuxième état II, réversibles. Le câble C ayant été raccordé au fût 1, par exemple de manière conventionnelle, c'est-à-dire par brasage, par sertissage, ou analogues, la mise en état II de mémoire de forme de la partie active 2, permet l'ouverture en position déployée de cette partie active et la mise en position convenable de l'élément de raccordement, par rapport 'au contact 4 du connecteur, pour la mise en oeuvre du raccordement. La mise en état II, c'est-à-dire en position déployée de la partie active 2, peut être effectuée par simple abaissement de la température de cette partie active 2, ou de l'ensemble de l'élément de raccordement, en deçà de la température de transition du matériau à mémoire de forme, température Ms, la température Ms étant définie comme la température à laquelle la phase martensitique du matériau à mémoire de forme considéré commence à se former d'elle-même. Bien entendu, tout abaissement de température à une température plus basse, telle que notamment la température Mf définie comme la température à laquelle la totalité du matériau à mémoire de forme est transformée en phase martensitique, ne sort pas du cadre de la présente invention. L'abaissement de température requis, peut être provoqué par toute source de froid normalement disponible en milieu industriel. L'élément de raccordement en état de forme II étant disposé convenablement par rapport au contact 4 du connecteur, celui-ci est maintenu dans sa position relative par rapport au contact 4 précité, et soumis à un réchauffement par simple suppression de la source de froid. Par disposition convenable de l'élément de raccordement par rapport au contact 4, on entend,par exemple dans le cas où le contact 4 est muni d'une collerette 40, la mise en place de la partie active 2 et du fût 1 de façon que la collerette 40 vienne s'engager dans la fente transversale ou ouverture existant entre le fût 1 et la partie active 2 au niveau de la partie commune 3. Le réchauffement normal de l'élément de raccordement et principalement de la partie active 2 a pour effet de ramener la partie active précitée en état de mémoire I, ainsi que représenté sur la figure 2. Ainsi,à la température d'utilisation du connecteur, le contact électrique entre l'élément de raccordement et le contact 4 du connecteur,est assuré au niveau notamment de la partie active 2 de l'élément de raccordement, laquelle en outre, du fait du serrage du contact 4 dans cette position, assure égalementla cohésion mécanique de l'ensemble.The memory states of form I and II can, according to the invention, be either non-reversible or reversible. Preferably, the active part 2 will include reversible shape memory states, first state I, second state II. The cable C having been connected to the barrel 1, for example in a conventional manner, that is to say by soldering, by crimping, or the like, setting state II of shape memory of the active part 2, allows the opening in the deployed position of this active part and placing the connection element in suitable position, relative to the contact 4 of the connector, for the implementation of the connection. The setting in state II, that is to say in the deployed position of the active part 2, can be carried out by simply lowering the temperature of this active part 2, or of the whole of the connection element, by below the transition temperature of the shape memory material, temperature Ms, the temperature Ms being defined as the temperature at which the martensitic phase of the shape memory material considered begins to form by itself. Of course, any lowering of the temperature to a lower temperature, such as in particular the temperature Mf defined as the temperature at which all of the shape memory material is transformed into the martensitic phase, does not depart from the scope of the present invention. The required temperature drop can be caused by any cold source normally available in an industrial environment. The connection element in the form II state being suitably disposed relative to the contact 4 of the connector, the latter is maintained in its relative position relative to the aforementioned contact 4, and subjected to heating by simple removal of the cold source . By suitable arrangement of the connection element relative to the contact 4 is meant, for example in the case where the contact 4 is provided with a flange 40, the positioning of the active part 2 and of the barrel 1 so that the flange 40 comes to engage in the transverse slot or opening existing between the barrel 1 and the active part 2 at the level of the common part 3. The normal heating of the connection element and mainly of the active part 2 has for effect of bringing the aforementioned active part back into memory state I, as shown in FIG. 2. Thus, at the temperature of use of the connector, the electrical contact between the connection element and the contact 4 of the connector is ensured at the level in particular of the active part 2 of the connection element, which furthermore, due to the tightening of the contact 4 in this position, also ensures the mechanical cohesion of the assembly.

Dans le cas ou les états de mémoire de forme I et II sont réversibles, il est en outre possible d'obtenir à nouveau l'ouverture en position déployée de la partie active 2, par simple abaissement de température ainsi que défini précédemment, afin de permettre si nécessaire une désolidarisation de l'élément de raccordement et du contact 4 avec un effort de connexion ou de déconnexion nul ou pratiquement nul.In the case where the memory states of form I and II are reversible, it is also possible to obtain again the opening in the deployed position of the active part 2, by simple lowering of the time. temperature as defined above, to allow if necessary a separation of the connection element and the contact 4 with a connection or disconnection effort zero or practically zero.

On comprendra également que du fait de l'utilisation des formes précitées, la connexion, déconnexion successive d'un élément de raccordement à un élément de contact 4 du connecteur, peut ainsi être effectuée de manière répétitive, pratiquement sans usure.It will also be understood that due to the use of the aforementioned forms, the connection, successive disconnection of a connection element to a contact element 4 of the connector, can thus be carried out repetitively, practically without wear.

Dans le cas où la partie active est munie d'un effet de mémoire de forme non réversible, la fermeture de la partie active sur le contact 4, à la température d'utilisation, c'est-à-dire en fait le passage de la partie active 2 de sa position déployée II, obtenue par exemple également par abaissement de la température, à la position I après le réchauffement est alors définitive.In the case where the active part is provided with a non-reversible shape memory effect, the closure of the active part on the contact 4, at the operating temperature, that is to say in fact the passage of the active part 2 of its deployed position II, obtained for example also by lowering the temperature, in position I after the heating is then final.

Des exemples de matériaux à mémoire de forme, susceptibles d'être utilisés pour la mise en oeuvre de la présente invention, seront maintenant donnés. De préférence, le matériau à mémoire de forme est choisi dans le groupe des composés nickel-titane, nickel-aluminium, nickel-titane-fer, cuivre-zinc-aluminium, cuivre-aluminium-nickel sous forme de composé inter-métallique ou sous forme alliée. A titre d'exemple non limitatif, un élément de raccordement conforme à l'objet de la présente invention a été réalisé à partir d'un alliage comportant sensiblement 4 % d'aluminium, 28 % de zinc, le reste du pourcentage étant constitué par du cuivre, les pourcentages indiqués s'entendant en pourcentage atomique. La température de transition Ms obtenue avec ce type n'alliage, est voisine de -80°C.Examples of shape memory materials capable of being used for the implementation of the present invention will now be given. Preferably, the shape memory material is chosen from the group of nickel-titanium, nickel-aluminum, nickel-titanium-iron, copper-zinc-aluminum, copper-aluminum-nickel compounds in the form of an intermetallic compound or under allied form. By way of nonlimiting example, a connection element in accordance with the object of the present invention has been produced from an alloy comprising substantially 4% aluminum, 28% zinc, the rest of the percentage being constituted by copper, the percentages given being understood as an atomic percentage. The transition temperature Ms obtained with this type of alloy is close to -80 ° C.

Un exemple de mise en oeuvre d'un élément de raccordement selon l'invention sera maintenant décrit au moyen des figures 3a et 3b.An example of implementation of a connection element according to the invention will now be described by means of FIGS. 3a and 3b.

selon les figures précitées, l'élément de raccordement peut être obtenu à partir d'une feuille d'alliage précité, découpée ainsi que représenté en figure 3a sensiblement selon une forme de H. La feuille découpée est ensuite soumise à un traitement mécanique par roulage, de façon à constituer le fût 1 et la partie active 2, sous forme de tube sensiblement. Sur la figure 3a, le traitement par roulage est référencé R et l'on notera, que par rapport à l'axe de symétrie longitudinal YY de la feuille, l'une des branches du H est inférieure à l'autre branche, de façon à former au niveau de la partie active 2, la fente 20 après roulage ainsi qu'il apparait d'ailleurs en figure 3b.according to the aforementioned figures, the connecting element can be obtained from a sheet of the aforementioned alloy, cut as shown in FIG. 3a substantially according to an H shape. The cut sheet is then subjected to a mechanical treatment by rolling , so as to constitute the barrel 1 and the active part 2, in the form of a tube substantially. In FIG. 3a, the processing by rolling is referenced R and it will be noted that, with respect to the longitudinal axis of symmetry YY of the sheet, one of the branches of the H is less than the other branch, so to be formed at the level of the active part 2, the slot 20 after rolling as it appears moreover in FIG. 3b.

Ainsi que représenté sur la figure 3b, un exemple de traitement d'un élément de raccordement selon l'invention, sera maintenant décrit en vue de l'obtention des premier I et deuxième II états de mémoire de forme réversibles précités.As shown in FIG. 3b, an example of processing a connection element according to the invention will now be described with a view to obtaining the first I and second II reversible shape memory states mentioned above.

Après les opérations effectuées, telles que représentées en figure 3a, l'élément de raccordement objet de l'invention a été conformé aux formes et dimensions finales constituant le premier état I de mémoire de forme tel que représenté en figure 3b. L'élément de raccordement est ensuite soumis à un traitement thermique capable d'amener celui-ci en état de phase cristallographique de type austénitique puis à un refroidissement à une température voisine de la température ambiante. Par refroidissement, on entend un refroidissement tel que celui obtenu au moyen d'un traitement du type trempage par exemple, de façon à éviter l'appa- ; rition de phase cristallographique parasite.After the operations carried out, as shown in FIG. 3a, the connection element which is the subject of the invention has been shaped to the final shapes and dimensions constituting the first state I of shape memory as shown in FIG. 3b. The connection element is then subjected to a heat treatment capable of bringing it into a crystallographic phase state of the austenitic type and then to cooling to a temperature close to ambient temperature. By cooling is meant cooling such as that obtained by means of a treatment of the soaking type for example, so as to avoid the occurrence; parasitic crystallographic phase rition.

L'élément de raccordement de l'invention est ensuite soumis en au moins une zone de déformation de celui-ci, principalement la partie active 2 de celui-ci, à un processus dit d'éducation. Sur la figure 3b, la zone de déformation est notée 105 et apparaît située au voisinage de l'intersection du plan diamétral de symétrie longitudinale de la partie active 2, contenant l'axe longitudinal de symétrie YY, et de la partie active 2.The connection element of the invention is then subjected in at least one deformation zone thereof, mainly the active part 2 thereof, to a so-called education process. In FIG. 3b, the deformation zone is denoted 105 and appears located in the vicinity of the intersection of the diametrical plane of longitudinal symmetry of the active part 2, containing the longitudinal axis of symmetry YY, and of the active part 2.

Le processus d'éducation consiste à imposer répétitivement à la partie active 2, une contrainte mécanique, telle que la partie active soit, dans cette zone de déformation 105, déformée de manière à amener les lobes constituant la partie active 2 dans une position de forme voisine du deuxième état de mémoire de forme II, et à soumettre l'ensemble, la contrainte étant maintenue, à un abaissement de température susceptible d'amener la partie active 2 ou l'ensemble de l'élément de raccordement en état de phase martensitique. Bien entendu, l'abaissement de température peut être réalisé au moyen de toute source de froid appliquée soit à l'ensemble de l'élément de raccordement, soit au seul niveau de la zone de déformation 105. La contrainte mécanique peut être appliquée au moyen d'un outil permettant un écartement suffisant des lobes de la partie active 2 précitée jusnu'à obtenir la Dosition de mémoire de forme souhaitée. Après suppression de la contrainte mécanique, l'élément de raccordement est soumis à un réchauffement progressif à température ambiante. Il reprend alors son état de forme stable ou premier état de mémoire de forme. La répétition du cycle imposé pour l'éducation,telle que définie précédemment, doit être suffisante pour obtenir un bon degré de reproductibilité des transitions entre le premier et le deuxième état de mémoire de forme ultérieur, par seul abaissement de la température puis par une élévation successive de la température pour le retour à la position ou état de mémoire de forme initiale.The education process consists in repeatedly imposing on the active part 2, a mechanical stress, such that the active part is, in this deformation zone 105, deformed so as to bring the lobes constituting the active part 2 into a shape position. close to the second form II memory state, and to subject the assembly, the constraint being maintained, to a lowering of temperature capable of bringing the active part 2 or the whole of the connection element into the martensitic phase state . Of course, the lowering of temperature can be achieved by means of any cold source applied either to the whole of the connection element, or only at the level of the deformation zone 105. The mechanical stress can be applied by means a tool allowing sufficient spacing of the lobes of the active part 2 above jusnu'à obtain D osition desired shape memory. After removal of the mechanical stress, the connection element is subjected to a gradual warming up to ambient temperature. It then resumes its stable shape state or first shape memory state. The repetition of the cycle imposed for education, as defined above, must be sufficient to obtain a good degree of reproducibility of the transitions between the first and the second state of subsequent shape memory, by lowering the temperature only and then by raising successive temperature for return to the position or state of initial shape memory.

Une variante de mise en oeuvre du processus dit d'éducation sera donnée à titre d'exemple non limitatif en liaison avec la figure 3b.A variant implementation of the so-called education process will be given by way of nonlimiting example in connection with FIG. 3b.

Selon cette variante, le processus consiste à. imposer en l'absence de déformation à l'objet, constitué par l'élément de raccordement conformé dans son état initial, une contrainte thermique consistant en une variation de température capable d'amener l'élément de contact, ou au moins la partie active 2 de celui-ci, en état de phase cristallographique martensitique. Puis, la partie active 2 étant dans l'étatprécité, une contrainte mécanique, telle que la partie active 2 soit déformée. est appliquée de manière à amener cette partie active 2 dans une position ou état de forme voisin du deuxième état de mémoire de forme II. L'abaissement de température et l'application de la contrainte mécanique peuvent être effectués à l'aide des moyens déjà cités, l'application de la contrainte mécanique pouvant être effectués dans le bain d'azote liquide lorsque la source de froid est constituée par un tel bain. Puis, un état de forme dit intermédiaire , voisin de l'état de forme initial de la partie active 2,est ensuite défini et imposé à celle-ci. L'imposition de la forme intermédiaire à la partie active 2 est effectuée par imposition des limites de changement ultérieur de forme de celle-ci aux limites correspondantes de l'état de forme intermédiaire. Par état de forme intermédiaire voisin de l'état de forme initial, on entend un état de forme dans lequel le retour à l'état initial a été obtenu ou à une forme voisine de celle de l'état initial.According to this variant, the process consists of. impose in the absence of deformation on the object, constituted by the connecting element shaped in its initial state, a thermal stress consisting of a temperature variation capable of bringing the contact element, or at least the active part 2 thereof, in the martensitic crystallographic phase state. Then, the active part 2 being in the stateprecited, a mechanical stress, such that the active part 2 is deformed. is applied so as to bring this active part 2 into a position or shape state close to the second shape memory state II. The temperature reduction and the application of the mechanical stress can be carried out using the means already mentioned, the application of the mechanical stress being able to be carried out in the liquid nitrogen bath when the cold source is constituted by such a bath. Then, a so-called intermediate state of form, close to the initial state of form of the active part 2, is then defined and imposed on it. The imposition of the intermediate form on the active part 2 is carried out by imposition of the limits of subsequent change of form thereof to the corresponding limits of the state of intermediate form. By intermediate shape state close to the initial shape state means a shape state in which the return to the initial state has been obtained or to a shape close to that of the initial state.

La définition et l'imposition des limites de changement de forme de la partie active 2 peuvent être effectuées au moyen d'un mandrin introduit dans la partie active 2, le mandrin ayant des dimensions extérieurescorres- pondant aux dimensions de l'état de forme intermédiaire. La partie active 2 en état martensitique à laquelle les limites de changement de forme ont été imposées est ensuite soumise à un réchauffement progressif à température ambiante pour ramener celle-ci en état de phase cristallographique de type austénitique. Du fait du maintien de la partie active 2 à l'état de forme intermédiaire et du réchauffement, des contraintes internes permettant la définition de l'état de forme intermédiaire comme premier état de mémoire de forme I sont alors induites dans la partie active 2.The definition and the imposition of the limits for changing the shape of the active part 2 can be carried out by means of a mandrel introduced into the active part 2, the mandrel having external dimensions corresponding to the dimensions of the state of intermediate form. . The active part 2 in martensitic state on which the shape change limits have been imposed is then subjected to a gradual warming up to ambient temperature to bring it back into a crystallographic phase state of austenitic type. Due to the maintenance of the active part 2 in the intermediate form state and the heating, internal constraints allowing the definition of the intermediate form state as the first form I memory state are then induced in the active part 2.

Le mode de réalisation précédent d'un élément de raccordement de l'invention par découpage et roulage n'est pas limitatif. Bien entendu, des éléments de raccordement de forme sensiblement analogue, peuvent être obtenus à partir de matériaux à mémoire de forme, délivrés sous forme de tige, lingot cylindrique ou analogue par fraisage, tournage, perçage et toute opération d'usinage conventionnel.The previous embodiment of a connection element of the invention by cutting and rolling is not limiting. Of course, connection elements of substantially similar shape can be obtained from shape memory materials, delivered in the form of rods, cylindrical ingots or the like by milling, turning, drilling and any conventional machining operation.

En outre, l'utilisation de l'effet de mémoire de forme réversible ou non, n'est bien entendu pas limitée à la seule partie active de l'élément de raccordement. En effet, le fût 1 lui-même, peut comporter, ainsi que représenté en figure 4a et 4b, un premier I et un deuxième II état de mémoire de forme. Le fût 1, est par exemple conformé de façon à pouvoir s'adapter étroitement au câble C dans son premier état de mémoire de forme, et de façon à permettre l'engagement et/ ou le dégagement du câble C dans son deuxième état de mémoire de forme. Sur la figure 4a représentant le deuxième état de mémoire de forme II du fût 1, celui-ci apparaît en position évasée, permettant une introduction aisée du câble C dans le fût, afin de permettre la liaison électrique correspondante. La position évasée peut être obtenue par abaissement de la température du fût 1, en deçà de la température de transition Ms de l'alliage constitutif de l'élément de raccordement. Sur la figure 4a, on notera en outre la présence sur la face interne du fût 1, d'aspérités notées 10, lesquelles en position de mémoire de forme II, c'est-à-dire en position évasée, ne s'opposent pas bien entendu à l'introduction du câble C dans le fût. Le câble étant introduit, le fût 1 est soumis à un réchauffement en vue de ramener celui-ci en sa position de mémoire de forme I, telle que représentée en figure 4b. La position de mémoire de forme I est une position resserree de dimension sensiblement analogue à celle de'la partie active 2 en même position I. La position de mémoire de forme I permet la fixation mécanique du câble C et la connexion électrique correspondante, du fait du serrage ainsi réalisé. Les aspérités 10 précédemment citées, ont alors pour rôle d'assurer un meilleur contact électrique avec le câble, ainsi qu'une meilleure cohésion mécanique. Ce type de connexion peut bien entendu être réalisé dans le cas de connexion à déplacement d'isolant.In addition, the use of the memory effect of reversible shape or not, is of course not limited to the only active part of the connecting element. Indeed, the barrel 1 itself, may include, as shown in FIGS. 4a and 4b, a first I and a second II state of shape memory. The barrel 1, for example is shaped so as to be able to adapt closely to the cable C in its first state of shape memory, and so as to allow the engagement and / or release of the cable C in its second state of shape memory. In FIG. 4a representing the second form II memory state of the barrel 1, it appears in the flared position, allowing easy introduction of the cable C into the barrel, in order to allow the corresponding electrical connection. The flared position can be obtained by lowering the temperature of the barrel 1, below the transition temperature Ms of the alloy constituting the connecting element. In FIG. 4a, the presence on the internal face of the barrel 1 will also be noted of roughness denoted 10, which in shape II memory position, that is to say in flared position, do not oppose of course when the cable C is introduced into the barrel. The cable being introduced, the drum 1 is subjected to heating in order to bring it back to its shape I memory position, as shown in FIG. 4b. The shape memory position I is a tightened position of dimension substantially similar to that of the active part 2 in the same position I. The shape memory position I allows the mechanical fixing of the cable C and the corresponding electrical connection, because tightening thus achieved. The asperities 10 previously cited, then have the role of ensuring better electrical contact with the cable, as well as better mechanical cohesion. This type of connection can of course be made in the case of insulation displacement connection.

Dans ce cas, de telles aspérités perforent l'isolant et viennent assurer le contact électrique avec le câble ainsi que la rétention mécanique.In this case, such asperities perforate the insulator and provide electrical contact with the cable as well as mechanical retention.

On a ainsi décrit un élément de raccordement, dans lequel les structures mécaniques précédentes ne sont pas limitatives. En effet, la fente transversale ou ouverture, située au niveau de la partie commune 3, peut évidemment être remplacée ou complétée par toute nervure ou analogue située sensiblement au niveau d'une ligne directrice de la partie active, et destinée à s'engager dans une fente ou ouverture correspondants du contact 4, afin d'assurer le contact électrique et la cohésion mécanique correspondante.A connection element has thus been described, in which the above mechanical structures are not limiting. Indeed, the transverse slit or opening, located at the level of the common part 3, can obviously be replaced or supplemented by any rib or the like located substantially at the level of a guideline of the active part, and intended to engage in a corresponding slot or opening of the contact 4, to ensure electrical contact and the corresponding mechanical cohesion.

En outre, l'élément de raccordement de l'invention est remarquable en ce qu'il permet d'assurer la liaison ou connexion électrique avec le contact du connecteur, sans aucun métal d'apport et sans utilisation d'outils encombrants. Le passage d'un état de mémoire de forme à l'autre état de mémoire de forme, l'état déployé, peut être effectué en dehors du connecteur lors du montage de l'élément de raccordement, la température à laquelle celui-ci est amené étant choisie très inférieure à la température de transition Ms de l'alliage constituant l'élément de raccordement et l'inertie thermique de l'élément de raccordement étant suffisante pour permettre le maintien en état de mémoire de forme déployée. La mise en position de l'élément de raccordement sur le contact du connecteur peut alors être effectuée sans difficulté avant réchauffement et retour à l'état de mémoire de forme initial. Dans le cas d'une déconnexion, il suffit de porter par exemple l'ensemble du connecteur, ou même simplement la connexion que l'on veut déconnecter, à une température inférieure à la température de transition de l'alliage.In addition, the connection element of the invention is remarkable in that it makes it possible to provide the electrical connection or connection with the contact of the connector, without any filler metal and without the use of bulky tools. The transition from one shape memory state to the other shape memory state, the deployed state, can be carried out outside the connector during assembly of the connection element, the temperature at which the latter is brought is chosen to be much lower than the transition temperature Ms of the alloy constituting the connection element and the thermal inertia of the connection element being sufficient to allow maintenance in the deployed shape memory state. The positioning of the connection element on the connector contact can then be carried out without difficulty before heating and returning to the initial shape memory state. In the case of a disconnection, it suffices for example to bring the whole of the connector, or even simply the connection which one wishes to disconnect, to a temperature below the transition temperature of the alloy.

En outre, l'élément de raccordement de l'invention peut comporter au moins au niveau de la partie active, un revêtement protecteur conducteur consistant en un dépôt d'or, d'argent, d'alliage de palladium ou d'étain-plomb. Ce dernier revêtement peut être en effet utilisé en élargissement de son champ habituel d'utilisation, puisqu'il n'apparait pratiquement plus de problème de frottement, ni d'usure au niveau de l'élément de raccordement.In addition, the connecting element of the invention may comprise at least at the active part, a conductive protective coating consisting of a deposit of gold, silver, palladium alloy or tin-lead. This latter coating can in fact be used as an extension of its usual field of use, since there is practically no more problem of friction or wear at the level of the connection element.

Selon une variante de réalisation avantageuse, l'élément de raccordement décrit précédemment peut être mis en oeuvre en vue de permettre une technique de raccordement au câble conducteur électrique, autre que le contact direct ou le déplacement d'isolant, technique telle que la connexion enroulée connue sous le vocable anglo-saxon de "wrapping".According to an advantageous alternative embodiment, the connection element described above can be implemented in order to allow a technique for connection to the electric conductor cable, other than direct contact or displacement of insulation, technique such as the wound connection. known by the English term "wrapping".

Selon un mode de réalisation de cette variante de réalisation, la partie active de l'élément comportant les caractéristiques essentielles précédemment décrites, le fût est lui-même constitué par une tige dite à "wrapper", c'est-à-dire une tige permettant d'effectuer une connexion enroulée.According to one embodiment of this alternative embodiment, the active part of the element comprising the essential characteristics described above, the barrel itself is constituted by a rod known as a "wrapper", that is to say a rod for making a coiled connection.

Selon une autre variante de réalisation, le fût est lui-mêmeconstitué en un matériau conducteur à mémoire de forme, la totalité de l'élément de raccordement de l'invention étant constituée un un même matériau.According to another alternative embodiment, the barrel is itself made of a conductive material with shape memory, the entire connecting element of the invention being made of the same material.

Conformément à la figure 5a, l'élément de raccordement entre un conducteur électrique et la partie arrière d'un contact de connecteur, conformément à l'invention, comporte un fût noté 1 constitué par une tige permettant la connexion du conducteur par la technique de connexion enroulée.In accordance with FIG. 5a, the connection element between an electrical conductor and the rear part of a connector contact, in accordance with the invention, comprises a barrel denoted 1 constituted by a rod allowing the connection of the conductor by the technique of coiled connection.

La connexion dite enroulée a fait l'objet d'une définition dans la norme Française NF C93021. La connexior enroulée a été définie dans cette norme,comme faisant intervenir un fil, une borne et un outil d'enroulement. Cette connexion assure sans soudure une liaison mécanique et électrique stables entre un fil à conducteur massif rond et une borne appropriée à arêtes saillantes par enroulement en hélice sous une certaine tension d'une certaine grandeur du conducteur sur la borne. La tension dans le conducteur enroulé rend étanchespar pression les surfaces de contact du conducteur et de la borne évitant ainsi la - corrosion de ces zones qui provoquerait une variation de la résistance de contact.The so-called coiled connection has been defined in French standard NF C93021. The wound connection has been defined in this standard as keep a wire, a terminal and a winding tool. This connection ensures a seamless mechanical and electrical connection between a wire with a solid round conductor and a suitable terminal with projecting edges by helical winding under a certain voltage of a certain size of the conductor on the terminal. The voltage in the wound conductor seals the contact surfaces of the conductor and of the terminal by pressure, thus avoiding corrosion of these areas which would cause a variation in the contact resistance.

Conformément à l'objet de l'invention, la partie active 2 de l'élément de raccordement est constituée par un matériau conducteur à mémoire de forme. Parmi les matériaux à mémoire de forme utilisés, on peut citer l'ensemble des matériaux désignés précédemment,In accordance with the object of the invention, the active part 2 of the connection element consists of a conductive material with shape memory. Among the shape memory materials used, mention may be made of all of the materials previously designated,

et notamment les composés nickel-titane, nickel-aluminium, nickel-titane-fer, cuivre-zinc-aluminium, cuivre-aluminium-nickel, sous forme de composés inter- métalliques ou sous forme alliée. La tige 1 est constituée par un élément de section sensiblement carré et présentant des bords à angles vifs afin de permettre la réalisation de la connexion conformément aux spécifications de la norme précitée.and in particular the nickel-titanium, nickel-aluminum, nickel-titanium-iron, copper-zinc-aluminum, copper-aluminum-nickel compounds, in the form of intermetallic compounds or in alloyed form. The rod 1 is constituted by an element of substantially square section and having edges with sharp angles in order to allow the realization of the connection in accordance with the specifications of the aforementioned standard.

Bien entendu, l'ensemble de l'élément de raccordement, objet de l'invention, peut être constitué en totalité par un natériau à mémoire de forme. Dans ce cas, l'élément de raccordement objet de l'invention peut être obtenu par les méthodes d'usinage telles que décrites précédemment, notamment à partir d'un feuillard de matériau par découpage et enroulement. Bien entendu, la partie active 2 est soumise à un processus dit d'éducation conformément aux caractéristiques correspondantes de la partie active 2 telles que décrites précédemment.Of course, the whole of the connection element, object of the invention, can be made up entirely of a shape memory material. In this case, the connecting element which is the subject of the invention can be obtained by the machining methods as described above, in particular from a strip of material by cutting and winding. Of course, the active part 2 is subjected to a so-called education process in accordance with the corresponding characteristics of the active part 2 as described. previously.

Ainsi qu'il apparaît en figures 5a, 5b et en outre en figures 6a, 6b, la partie active 2 comporte sensiblement une première partie tubulaire 21 sensiblement cylindrique présentant une fente 20 sur toute la longueur d'une de ses génératrices. En outre, la partie active 2 comprend une deuxième partie sensiblement tubulaire et cylindrique reliée mécaniquement à la première partie 21 par un élément intermédiaire 3.As it appears in Figures 5a, 5b and further in Figures 6a, 6b, the active part 2 comprises substantially a first tubular part 21 substantially cylindrical having a slot 20 over the entire length of one of its generatrices. In addition, the active part 2 comprises a second substantially tubular and cylindrical part mechanically connected to the first part 21 by an intermediate element 3.

La deuxième partie 22 est en outre adaptée afin d'assurer la liaison mécanique avec la tige 1 permettant d'effectuer les connexions enroulées. A cet effet, la deuxième partie 22 est munie à son extrémité opposée à l'élément intermédiaire d'une terminaison tronconique 24 point de départ de la tige 1. La tige 1 est ensuite rapportée au niveau de la terminaison tronconique 24 et fixée à celle-ci au moyen d'une soudure par points par exemple. Bien entendu, selon une variante de réalisation, la tige 1 et la terminaison tronconique 24 peuvent être constituées en un seul et même élément, la terminaison tronconique 24 étant ensuite rapportée par soudure par points à la deuxième partie tubulaire 22.The second part 22 is further adapted to ensure the mechanical connection with the rod 1 making it possible to make the wound connections. To this end, the second part 22 is provided at its end opposite to the intermediate element with a frustoconical termination 24 starting point of the rod 1. The rod 1 is then brought to the level of the frustoconical termination 24 and fixed to that -this by means of spot welding for example. Of course, according to an alternative embodiment, the rod 1 and the frustoconical termination 24 may be made up of a single element, the frustoconical termination 24 then being added by spot welding to the second tubular part 22.

Sur la figure 6a, on a montré un élément de raccordement objet de l'invention mis en position autour d'un contact 4. Pour la mise en place de l'élément de raccordement de l'invention autour du contact 4, l'élément de raccordement,ou la partie active 2 de celui-ci,est tout d'abord refroidi à une température inférieure à la température de transition de l'alliage constitutif de l'élément ou de la partie active. La contrainte thermique ainsi créée au niveau de la partie active 2 de l'élément de raccordement, a pour effet de ramener celle-ci en état de mémoire de forme II, c'est-à-dire en position déployée. La partie active 2 étant placée au niveau du contact et en particulier au niveau du bossage 40 ménagé à cet effet sur le contact 4, le réchauffement de l'élément de raccordement et de la partie active 2 permet la mise en place et la fermeture de la partie active 2 conformément à la figure 6a sur le contact 4. Bien entendu, la forme de la section de contact 4 au niveau de la partie active 2 peut en outre être adaptée afin d'améliorer la qualité du raccordement et afin d'éviter la rotation de l'élément de raccordement par rapport à l'axe longitudinal du contact. En outre, le bossage 40 peut être muni d'une encoche ou logement dans lequel la partie intermédiaire 3 reliant en fait la première partie tubulaire 21 à la deuxième partie tubulaire 22 vient s'engager. Il est ainsi possible d'assurer un blocage de l'élément de raccordement en rotation par rapport à l'axe longitudinal du contact. Sur la figure 6b, le logement 41 ménagé au niveau du bossage 40 et dans lequel vient s'engager la partie intermédiaire 3 a été représenté.In FIG. 6a, a connection element object of the invention has been shown placed in position around a contact 4. For the installation of the connection element of the invention around the contact 4, the element connection, or the active part 2 thereof, is firstly cooled to a temperature below the transition temperature of the alloy constituting the element or the active part. The thermal stress thus created at the level of the active part 2 of the connection element, has the effect of bringing the latter back into shape II memory state, that is to say in the deployed position. The active part 2 being placed at the level of the contact and in particular at the level of the boss 40 formed for this purpose on the contact 4, the heating of the connection element and of the active part 2 allows the active part 2 to be put in place and to be closed in accordance with FIG. 6a on the contact 4. Of course, the shape of the contact section 4 at the active part 2 can also be adapted in order to improve the quality of the connection and to avoid rotation of the connection element with respect to the longitudinal axis of the contact. In addition, the boss 40 may be provided with a notch or housing in which the intermediate part 3 in fact connecting the first tubular part 21 to the second tubular part 22 comes to engage. It is thus possible to ensure a locking of the connection element in rotation relative to the longitudinal axis of the contact. In Figure 6b, the housing 41 formed at the boss 40 and in which engages the intermediate part 3 has been shown.

L'élément de raccordement ainsi décrit apparaît particulièrement adapté pour une utilisation sur des contacts de priseshermétiquesou analogues ainsi que représentéesen figure 6b. Dans ce type de connecteurs ou de prises, les techniques de raccordement habituelles et notamment, le raccordement par connexion enroulée directement effectuée sur le contact 4 ne peuvent être effectuées en raison du faible volume disponible pour mettre en oeuvre ce type de raccordement au moyen des outils appropriés et en particulier en raison de l'exigui- té de l'espace disponible autour de chaque contact au voisinage de la paroi isolante 6 de la partie arrière du connecteur.The connection element thus described appears to be particularly suitable for use on contacts of hermetic or similar sockets as shown in FIG. 6b. In this type of connectors or sockets, the usual connection techniques and in particular, the connection by coiled connection directly carried out on the contact 4 cannot be carried out because of the small volume available for implementing this type of connection by means of the tools. appropriate and in particular due to the small size of the space available around each contact in the vicinity of the insulating wall 6 of the rear part of the connector.

En outre, les alliages susceptibles d'un bon scellement verre/métal en vue d'assurer une bonne herméticité n'ont plus, après passage au four à 750°C/ 800°C par exemple pour scellement, des caractéristiques mécaniques suffisantes pour résister en torsion à l'enroulement du fil conducteur ce qui justifie encore de l'intérêt d'une pièce rapportée ou élément de raccordement tel que défini dans la présente demande.In addition, the alloys capable of a good glass / metal sealing in order to ensure good hermeticity no longer have, after passing through the oven at 750 ° C / 800 ° C for example for sealing, mechanical characteristics sufficient to resist in torsion in the winding of the conducting wire which still justifies the interest of an attached part or connection element as defined in the present application.

Claims (17)

1. Elément de raccordement entre un conducteur électrique et la partie arrière d'un contact de connecteur, comportant un fût (1) destiné à recevoir le câble électrique et une partie active (2) dite de liaison, destinée à assurer la connexion électrique et la cohésion mécanique avec ledit contact, caractérisé en ce que la partie active (2) au moins est constituée en un matériau conducteur à mémoire de forme, ladite partie active (2) étant conformée de façon à pouvoir s'adapter étroitement à la partie arrière dudit contact dans un premier état de mémoire de forme et à pouvoir assurer le dégagement et/ou l'engagement dudit élément dans un deuxième état de mémoire de forme.1. Connection element between an electrical conductor and the rear part of a connector contact, comprising a barrel (1) intended to receive the electric cable and an active part (2) known as a connection, intended to ensure the electrical connection and mechanical cohesion with said contact, characterized in that at least the active part (2) is made of a conductive material with shape memory, said active part (2) being shaped so as to be able to adapt closely to the rear part of said contact in a first shape memory state and able to ensure the release and / or engagement of said element in a second shape memory state. 2. Elément de raccordement selon la revendication 1, caractérisé en ce que le premier état de mémoire de forme, lors duquel la connexion électrique est assurée. est stable à la temnérature ambiante.2. Connection element according to claim 1, characterized in that the first shape memory state, during which the electrical connection is ensured. is stable at room temperature. 3. Elément de raccordement selon la revendia- tion 1, caractérisé en ce que le premier état de mémoire de forme, lors duquel la connexion électrique est assurée, est stable à basse température.3. Connection element according to claim 1, characterized in that the first shape memory state, during which the electrical connection is ensured, is stable at low temperature. 4. Elément de raccordement selon l'une des revendications 1 à 3, caractérisé en ce que ladite partie active (2) et ledit fût (1) sont constitués chacun par un élement sensiblement tubulaire reliés par une partie intermédiaire (3) commune, ladite partie active (2) comportant une fente (20) s'étendant sensiblement sur toute la longueur de la partie active.4. Connection element according to one of claims 1 to 3, characterized in that said active part (2) and said barrel (1) each consist of a substantially tubular element connected by a common intermediate part (3), said active part (2) comprising a slot (20) extending substantially over the entire length of the active part. 5. Elément de raccordement selon la revendication 4, caractérisé en ce que ladite partie active (2) comporte sensiblement au niveau d'une de ses lignes directrices une nervure.5. Connection element according to claim 4, characterized in that said active part (2) comprises substantially at one of its guidelines a rib. 6. Elément de raccordement selon l'une des revendications 1 à 5 précédentes, caractérisé en ce qu'il est en totalité constitué en un matériau à mémoire de forme.6. Connection element according to one of the preceding claims 1 to 5, characterized in that it is entirely made of a shape memory material. 7. Elément de raccordement selon l'une des revendications précédentes, caractérisé en ce que lesdits premier et deuxième états de mémoire de forme de ladite partie active sont non réversibles.7. Connection element according to one of the preceding claims, characterized in that said first and second shape memory states of said active part are non-reversible. 8. Elément de raccordement selon l'une des revendications 1 à 6 précédentes, caractérisé en ce que lesdits premier et deuxième états de mémoire de forme de ladite partie active sont réversibles.8. Connection element according to one of the preceding claims 1 to 6, characterized in that said first and second shape memory states of said active part are reversible. 9. Elément de raccordement selon l'une des revendications 6 à 8 précédentes, caractérisé en outre en ce que le fût (1) lui-même comporte un premier et un deuxième états de mémoire de forme, ledit fût (1) étant conformé de façon à pouvoir s'adapter étroitement audit câble dans son premier état de mémoire de forme et de façon à permettre l'engagement et/ou le dégagement dudit câble dans son deuxième état de mémoire de forme.9. Connection element according to one of the preceding claims 6 to 8, further characterized in that the barrel (1) itself comprises a first and a second shape memory state, said barrel (1) being shaped so as to be able to adapt closely to said cable in its first shape memory state and so as to allow the engagement and / or release of said cable in its second shape memory state. 10. Elément de raccordement selon la revendication 9, caractérisé en ce que le fût (1) comporte sur sa face interne des aspérités (10).10. Connection element according to claim 9, characterized in that the barrel (1) has on its internal face asperities (10). 11. Elément de raccordement selon l'une des revendications précédentes, caractérisé en ce que ledit matériau à mémoire de forme est choisi dans le groupe des composés nickel-titane, nickel-aluminium, nickel-titane-fer, cuivre-zinc-aluminium, cuivre-aluminium-nickel sous forme de composé intermétallique ou sous forme alliée.11. Connection element according to one of the preceding claims, characterized in that said shape memory material is chosen from the group of nickel-titanium, nickel-aluminum, nickel-titanium-iron, copper-zinc-aluminum compounds, copper-aluminum-nickel in the form of an intermetallic compound or in an alloyed form. 12. Elément de raccordement selon l'une des revendications précédentes, caractérisé en ce que la partie active au moins comporte un revêtement protecteur conducteur.12. Connection element according to one of the preceding claims, characterized in that the active part at least comprises a conductive protective coating. 13. Elément de raccordement selon la revendication 1, caractérisé en ce que ledit fût (1) est constitué par une tige permettant la connexion dudit conducteur par la technique dite de connexion enroulée.13. Connection element according to claim 1, characterized in that said barrel (1) consists of a rod allowing the connection of said conductor by the technique known as wound connection. 14. Elément de raccordement selon la revendication 13,.caractérisé en ce que ladite partie active (2) étant constituée par un matériau conducteur à mémoire de forme, la tige (1) est constituée par un alliage conducteur rapporté par soudure sur ladite partie active. 14 . Connection element according to claim 13, characterized in that said active part (2) being constituted by a conductive material with shape memory, the rod (1) is constituted by a conductive alloy added by welding to said active part. 15. Elément de raccordement selon l'une des revendications 13 ou 14, caractérisé en ce que la tige (1) est constituée par un élément de section sensiblement carrée, ladite tige présentant des bords à angle vif.15. Connecting element according to one of claims 13 or 14, characterized in that the rod (1) is constituted by an element of substantially square section, said rod having edges at a sharp angle. 16. Elément de raccordement selon l'une des revendications 13 ou 15, caractérisé en ce qu'il est constitué en totalité par un matériau à mémoire de forme.16. Connection element according to one of claims 13 or 15, characterized in that it is made entirely of a shape memory material. 17. Elément de raccordement selon l'une des revendications 13 à16, caractérisé en ce que ladite partie active (2) comporte sensiblement : - une première partie tubulaire (21) sensiblement cylindrique présentant une fente (20) sur toute la longueur d'une de ses génératrices - une deuxième (22) partie sensiblement tubulaire cylindrique reliée mécaniquement à ladite première partie (21) par un élément intermédiaire (3), ladite deuxième (22) partie étant munie à son extrémité opposée à l'élément intermédiaire d'une terminaison tronconique (24) point de départ de la tige (1). 17. Connection element according to one of claims 13 to 16, characterized in that said active part (2) substantially comprises: - A first substantially cylindrical tubular part (21) having a slot (20) over the entire length of one of its generatrices - a second (22) substantially tubular cylindrical part mechanically connected to said first part (21) by an intermediate element (3), said second (22) part being provided at its end opposite the intermediate element with a frustoconical termination ( 24) starting point of the rod (1).
EP86400560A 1985-03-19 1986-03-17 Linking element between an electric conductor and a connector contact Withdrawn EP0197821A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR8504041 1985-03-19
FR8504041A FR2579379B1 (en) 1985-03-19 1985-03-19 CONNECTING ELEMENT BETWEEN AN ELECTRICAL CONDUCTOR AND A CONNECTOR CONTACT
FR8508331 1985-06-03
FR8508331A FR2582868B2 (en) 1985-06-03 1985-06-03 CONNECTING ELEMENTS BETWEEN AN ELECTRICAL CONDUCTOR AND A CONNECTOR CONTACT

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EP0197821A1 true EP0197821A1 (en) 1986-10-15

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EP86400560A Withdrawn EP0197821A1 (en) 1985-03-19 1986-03-17 Linking element between an electric conductor and a connector contact

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US (1) US4717352A (en)
EP (1) EP0197821A1 (en)
CA (1) CA1248192A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2663470A1 (en) * 1990-06-18 1991-12-20 Souriau & Cie CONNECTING ELEMENT OF A COAXIAL CABLE WITH CONTACT PINS.
WO2011141021A1 (en) * 2010-05-12 2011-11-17 Harting Electric Gmbh & Co. Kg Electrical contact element

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FR2585191B1 (en) * 1985-07-19 1988-09-30 Souriau & Cie FITTING FOR CONNECTION OF ELECTRICAL CONTACT AREAS OF SHAPE MEMORY MATERIAL
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DE102018202206A1 (en) * 2018-02-13 2019-08-14 Bayerische Motoren Werke Aktiengesellschaft Method and contacting device for electrically contacting a pin
GB2593679A (en) * 2020-03-25 2021-10-06 Gyrus Medical Ltd Shape memory electrical connector
GB2628277A (en) * 2020-03-25 2024-09-18 Gyrus Medical Ltd Shape memory electrical connector

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Cited By (7)

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Publication number Priority date Publication date Assignee Title
FR2663470A1 (en) * 1990-06-18 1991-12-20 Souriau & Cie CONNECTING ELEMENT OF A COAXIAL CABLE WITH CONTACT PINS.
EP0462879A1 (en) * 1990-06-18 1991-12-27 Souriau Et Cie Coupling element for a coaxial cable on contact pin and set of these coupling elements
US5092784A (en) * 1990-06-18 1992-03-03 Souriau & Cie Connector component for connecting a coaxial cable to contact pins, and an assembly of such connector components
WO2011141021A1 (en) * 2010-05-12 2011-11-17 Harting Electric Gmbh & Co. Kg Electrical contact element
US8834215B2 (en) 2010-05-12 2014-09-16 Harting Electric Gmbh & Co. Kg Electrical contact element
RU2533165C2 (en) * 2010-05-12 2014-11-20 Хартинг Электрик Гмбх Унд Ко. Кг Electric contact element
EP3196983A2 (en) 2010-05-12 2017-07-26 Harting Electric GmbH & Co. KG Electric contact element

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US4717352A (en) 1988-01-05
CA1248192A (en) 1989-01-03

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