EP3709455A1 - Agencement de raccordement, élément de contact et procédé de fabrication d'un raccordement - Google Patents

Agencement de raccordement, élément de contact et procédé de fabrication d'un raccordement Download PDF

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Publication number
EP3709455A1
EP3709455A1 EP19162166.3A EP19162166A EP3709455A1 EP 3709455 A1 EP3709455 A1 EP 3709455A1 EP 19162166 A EP19162166 A EP 19162166A EP 3709455 A1 EP3709455 A1 EP 3709455A1
Authority
EP
European Patent Office
Prior art keywords
contact element
electrical conductor
end section
connection
electrical
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Withdrawn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
EP19162166.3A
Other languages
German (de)
English (en)
Inventor
Andreas Gruber
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.)
Rosenberger Hochfrequenztechnik GmbH and Co KG
Original Assignee
Rosenberger Hochfrequenztechnik GmbH and Co KG
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
Application filed by Rosenberger Hochfrequenztechnik GmbH and Co KG filed Critical Rosenberger Hochfrequenztechnik GmbH and Co KG
Priority to EP19162166.3A priority Critical patent/EP3709455A1/fr
Priority to US16/806,231 priority patent/US20200295477A1/en
Priority to CN202010152068.7A priority patent/CN111697356A/zh
Publication of EP3709455A1 publication Critical patent/EP3709455A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • H01R4/02—Soldered or welded connections
    • H01R4/023—Soldered or welded connections between cables or wires and terminals
    • 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
    • H01R4/26—Connections in which at least one of the connecting parts has projections which bite into or engage the other connecting part in order to improve the contact
    • 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
    • H01R4/10—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/187—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping combined with soldering or welding
    • 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
    • H01R4/10—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/20—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping using a crimping sleeve
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
    • H01R43/0207—Ultrasonic-, H.F.-, cold- or impact welding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/26—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for engaging or disengaging the two parts of a coupling device
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/03—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections
    • H01R9/05—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections for coaxial cables
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/03—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections
    • H01R9/05—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections for coaxial cables
    • H01R9/0518—Connection to outer conductor by crimping or by crimping ferrule
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2103/00—Two poles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/38—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts
    • H01R24/40—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency
    • 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
    • H01R4/02—Soldered or welded connections
    • H01R4/029—Welded connections
    • 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
    • H01R4/28—Clamped connections, spring connections
    • H01R4/50—Clamped connections, spring connections utilising a cam, wedge, cone or ball also combined with a screw
    • H01R4/5033—Clamped connections, spring connections utilising a cam, wedge, cone or ball also combined with a screw using wedge or pin penetrating into the end of a wire in axial direction of the wire

Definitions

  • the invention relates to a connection arrangement comprising an electrical cable and a contact element connected to a free end of an electrical conductor of the cable, according to the preamble of claim 1.
  • the invention also relates to an electrical connector comprising a connecting arrangement.
  • the invention also relates to a method for establishing a connection between an electrical conductor of an electrical cable and a contact element, according to the preamble of claim 11.
  • the invention also relates to a device for producing a connection arrangement according to the preamble of claim 15.
  • Contact elements are used to make contact with an electrical conductor of an electrical cable.
  • the contact elements can in particular be contact elements of a plug connector which are provided for contacting a further plug connector (hereinafter also referred to as “mating connector”).
  • connection technologies are associated with mechanical and electrical disadvantages.
  • the process time required for soldering reduces the throughput in the manufacture of the connector, which can be uneconomical, especially in the context of mass production.
  • the additional production means for example solder or a crimp sleeve
  • increase the costs in production With regard to a soldering process, the necessary heat input into the connection arrangement can also be problematic.
  • a coaxial plug connector in which a press pin of a two-part inner conductor contact element is introduced into a hole in the end face of the inner conductor in order to contact the inner conductor of a coaxial cable.
  • the outer diameter of the press pin and the inner diameter of the bore in the inner conductor of the cable are designed in such a way that the press pin radially expands the inner conductor as it penetrates, resulting in a press fit between the inner conductor of the cable and a sleeve surrounding the inner conductor.
  • the press fit thus forms a non-positive connection between the inner conductor of the cable and the inner conductor contact element.
  • the object of the present invention is to provide an improved connection arrangement which is easy to manufacture and whose electrical properties are particularly suitable for use in high-frequency technology.
  • the present invention is also based on the object of creating an improved contact element for connection to an electrical conductor of an electrical cable, which is easy to manufacture and has electrical properties that are advantageous in particular for high-frequency technology.
  • a connection arrangement comprising an electrical cable and a contact element connected to a free end of an electrical conductor of the cable.
  • the contact element penetrates with a first end section into an end face of the free end of the electrical conductor.
  • the contact element preferably penetrates the electrical conductor with its first end section along an axial direction with respect to the longitudinal axis of the electrical conductor.
  • the contact element according to the invention can also be referred to as a “pin”.
  • the free end of the electrical conductor can in particular be a plug-side end of the electrical conductor that is to be connected to the contact element of a plug connector.
  • the electrical conductor is preferably made of copper or aluminum.
  • At least one area of the first end section of the contact element is directly materially connected to the electrical conductor.
  • a “direct material connection” is to be understood as meaning that the material connection between the first end section of the contact element and the electrical conductor takes place without the aid of a further material.
  • no welding or soldering additives e.g. solder
  • a material connection with the electrical conductor without the use of welding or soldering additives is thus provided in at least one area of the first end section of the contact element.
  • no adhesive or the like is provided for the direct material connection.
  • the material connection is preferably a material connection that was generated without the supply of external heat or without the use of external heat sources (e.g. laser, induction furnace, etc.).
  • the material connection is particularly preferably produced by frictional heat when the contact element is introduced into the electrical conductor.
  • the area of the first end section of the contact element is at least partially directly cohesive with an inner section of the electrical Head connected.
  • the first end section makes direct material contact with the electrical conductor on its end face, at least in some areas.
  • first end section of the contact element is directly materially connected to the electrical conductor.
  • the first end section of the contact element is particularly preferably at least approximately completely, and very particularly preferably completely, directly connected to the electrical conductor in a materially bonded manner.
  • additional manufacturing means for example an additional solder
  • the contact element is connected to the free end of the electrical conductor in such a way that the contact element does not contact an outer circumference of the electrical conductor.
  • a crimp sleeve or some other sleeve for mechanically connecting the contact element to the electrical conductor can be dispensed with.
  • connection arrangement can be very small compared to the prior art, in particular since additional manufacturing means and a sleeve for pressing the electrical conductor with the contact element can be dispensed with.
  • An (electrical and mechanical) connection or contact between the first end section of the contact element and the electrical conductor can be provided exclusively in the inner region of the electrical conductor. However, it can optionally also be provided that the first end section of the contact element makes contact with the end face of the free end of the electrical conductor.
  • an electrical plug connector equipped with the connection arrangement can be made smaller. Simultaneously Due to the avoidance of a jump in diameter in the connection area, an advantageous use of the connection arrangement in high-frequency technology can be made possible without the need for complex impedance adaptations.
  • the electrical conductor is designed as an inner conductor of the cable and the contact element is designed as an inner conductor contact element of a plug connector.
  • the connector can be, for example, a plug, a socket, a coupler or an adapter.
  • the term "plug connector" used in the context of the invention is representative of all variants.
  • the electrical cable can be designed as a coaxial cable.
  • the coaxial cable can have a single inner conductor which is sheathed by a dielectric and finally surrounded by an outer conductor in order to shield the inner conductor electromagnetically.
  • the invention can be used with a so-called corrugated cable.
  • the corrugated jacket cable can in particular have a corrugated jacket made of copper, a dielectric made of PE foam and an inner conductor made of aluminum.
  • an unshielded electrical cable can also be provided.
  • electrical cables can also be provided which have more than one inner conductor, for example twisted pair cables with twisted wire pairs or parallel pair cables or other multi-core cables. It can then be provided to connect at least one of the wires or one of the inner conductors to a contact element according to the invention, preferably to connect all wires or inner conductors to a respective contact element according to the invention.
  • the contact element is designed in one piece.
  • the first end section of the contact element which is provided for the mechanical and electrical connection to the electrical conductor, can preferably be formed in one piece with the rest of the contact element.
  • a multi-component solution such as a sleeve surrounding the first end section, can thus be dispensed with.
  • the contact element can have a second end section which is arranged at the other end of the contact element.
  • the second end section can be designed for connection to a contact element of a mating connector or for connection to another electrical component, for example a component on an electrical circuit board.
  • a middle section of the contact element can be provided between the first end section and the second end section, for example for mechanically fixing the contact element in a connector housing.
  • the outer diameter of the contact element corresponds to the outer diameter of the electrical conductor at least in a central section adjoining the first end section of the contact element. It can also be provided that the outer diameter of the contact element in its second end section corresponds to the outer diameter of the electrical conductor.
  • a connector equipped with a corresponding connection arrangement can be designed to be smaller than the known connectors of the prior art, while at the same time being well suited for high-frequency technology.
  • an outer conductor contact element surrounding the contact element for example an outer housing of a plug connector, has a constant cross section in an axial section that radially surrounds the end section of the contact element.
  • connection arrangement only locally limited heating occurs as a rule - a possibly harmful heat input can be avoided. Furthermore, a gas-tight connection can be particularly suitable for providing robust plug connectors which can be used safely and for a long time even under adverse conditions, for example in vehicles.
  • connection between the first end section of the contact element and the free end of the electrical conductor comprises a form-fitting connection.
  • a form-fitting connection between the first end section of the contact element and the free end of the electrical conductor can also be advantageous.
  • the cross section of the first end section tapers in the direction of the free end of the first end section.
  • a tapering of the cross section of the first end section in the direction of its free end can be particularly suitable for establishing the connection, since the contact element can then be introduced into the free end of the electrical conductor in the manner of a wedge comparatively easily.
  • the first end section of the contact element is shaped conically.
  • first end section of the contact element can be conically shaped in such a way that the cross section or the diameter of the first end section decreases or narrows in the direction of the free end of the first end section.
  • a conical shape of the penetration region or of the first end section of the contact element can promote complete penetration of the first end section of the contact element into the inner region of the electrical conductor.
  • a conical geometry can also generate a comparatively large amount of friction when the first end section of the contact element is joined to the electrical conductor and thus promote a material bond.
  • the free end of the first end section of the contact element has a point or a rounding.
  • a point or a rounding may be advantageous in order to advantageously introduce the first end section into the electrical conductor.
  • the first end section of the contact element has at least one radial shoulder, preferably at least one radial cut edge and / or an undercut.
  • Radial shoulders in the first end section, behind which displaced material of the electrical conductor can collect, can be particularly suitable for an optimized form-fitting fastening.
  • a radial edge can e.g. B. form an undercut and thereby claw into the electrical conductor.
  • Cutting edges and / or undercuts can also be particularly well suited for specifically scraping off material of the electrical conductor in the course of the introduction of the first end section from the electrical conductor, which material can then collect behind the undercut.
  • a completely or at least regionally separated metal chip can be produced by a cut edge, which then at least partially fills the recess of an undercut and can thereby enable or optimize a form-fitting connection.
  • the metal chip can also promote an additional material bond.
  • the first end section of the contact element has a coating.
  • the coating consists of a material that promotes an integral connection.
  • a coating made of a material with a lower melting temperature than that of the material of the contact element and that of the material of the electrical conductor can be provided.
  • the melting temperature of the material of the coating can, however, also be higher or correspond to the melting temperature of the material of the contact element and that of the material of the electrical conductor.
  • Coating the first end section of the contact element can, for example, facilitate the penetration of the first end section into the electrical conductor.
  • the mechanical connection and the electrical connection can be improved by a coating.
  • a coating made of silver or made of a material with a similar melting temperature and comparable electrical properties can be provided.
  • the electrical conductor can then preferably be formed from aluminum or a material with a similar melting temperature and comparable electrical properties.
  • the invention also relates to a contact element for connection to a free end of an electrical conductor of an electrical cable, having a contact body with a first end section, the first end section being designed to penetrate into an end face of the free end of the electrical conductor.
  • the contact element is designed such that at least a partial section of the first end section of the contact body can be connected directly to the first conductor in a materially bonded manner.
  • the contact element does not have a sleeve (for example a compression sleeve) in order to contact and press the electrical conductor on its outer circumference.
  • a sleeve for example a compression sleeve
  • Such a sleeve would lead to the contact element jamming with the electrical conductor while the contact element penetrates the electrical conductor, so that a sufficiently high pressure or a sufficiently high relative speed for the direct material connection of the contact element to the electrical conductor cannot be achieved.
  • the contact body can be designed in such a way that it does not contact an outer circumference of the electrical conductor when the first end section of the contact body is connected to the electrical conductor.
  • the contact element can preferably have a specific tip geometry in its first end section in order to be able to advantageously penetrate into the end face of the free end of the electrical conductor.
  • the invention also relates to an electrical connector, comprising a connection arrangement according to the statements above and below.
  • the invention preferably relates to an electrical connector, comprising a connection arrangement with an electrical cable and a contact element connected to a free end of the electrical conductor of the cable, the contact element penetrating the electrical conductor with a first end section in the axial direction with respect to the longitudinal axis of the electrical conductor. It can be provided that at least one area of the first end section of the contact element is directly materially connected to the electrical conductor.
  • the contact element is preferably connected to the free end of the electrical conductor in such a way that the contact element does not contact an outer circumference of the electrical conductor.
  • the invention is not restricted to a specific design of a plug connector or to a specific electrical cable.
  • the invention is particularly suitable for electrical cables or for cable connectors for high-frequency technology, in particular for use in communication technology and / or in vehicles.
  • the use of the invention with cable connectors in the high-voltage range can also be advantageous.
  • a cable connector according to the invention can, for example, be a PL connector, BNC connector, TNC connector, SMBA (FAKRA) connector, N connector, 7-16 connector, SMA connector, SMB connector, SMS connector, SMC connector , SMP connectors, BMS connectors, HFM connectors, HSD connectors, H-MTD connectors, BMK connectors, mini-coax connectors or Makax connectors.
  • SMBA FAKRA
  • the invention also relates to a method for establishing a connection between an electrical conductor of an electrical cable and a contact element, according to which the contact element is introduced with a first end section into an end face of a free end of the electrical conductor. It is provided that the first end section of the contact element is introduced into the free end of the electrical conductor at such a high pressure and / or at such a high relative speed that the first end section of the contact element is caused by the high pressure and / or the high relative speed and the electrical conductor are at least partially materially connected to one another.
  • the first end section of the contact element is preferably introduced or shot into the free end of the electrical conductor at such a speed that a cold-welded connection is created between the first end section and the electrical conductor.
  • a method for producing a joint connection between a contact element and an electrical conductor can thus be provided, in which, when producing the connection, complex plug-in contacts, thermal welding processes, ultrasonic welding or soldering are preferably dispensed with.
  • the high relative speed is based on a high linear speed and / or on a high angular speed.
  • a high (relative) linear speed can be superimposed with a rotary movement.
  • a superimposition of the axial movement by a rotary movement can be advantageous in order to further increase the local heating that occurs during the introduction of the contact element into the electrical conductor in order to optimize an integral connection.
  • first end section of the contact element is provided with a coating or additional solder is introduced into the connection in a conventional manner, a rotary movement for generating frictional heat can be advantageous.
  • the contact element is introduced into the free end of the electrical conductor in such a way that the contact element does not contact an outer circumference of the electrical conductor when the first end section is in its end position in the electrical conductor.
  • the first end section of the contact element can preferably be introduced into the end face of the electrical conductor in such a way that a gas-tight connection is created.
  • a cold welding process can particularly preferably be provided in order to connect the contact element to the electrical conductor.
  • the free end of the electrical conductor forms a completely closed end face which is broken through by the introduction of the first end section of the contact element.
  • the end face of the electrical conductor preferably has no bore.
  • the unprocessed end face of an electrical conductor designed as a stranded wire should also fall under the term "completely closed end face".
  • the free end of the electrical conductor has a centering hole on the end face, the diameter of which is greater than the depth of the hole.
  • the first end section of the contact element is introduced into the free end of the electrical conductor in such a way that a positive connection also results.
  • a form-fitting and / or an indirect material connection are provided in addition to the region-wise direct material connection.
  • the first end section of the contact element is introduced into the free end of the electrical conductor in such a way that the contact element strikes with a radial recess on the end face of the free end of the electrical conductor.
  • the first end section of the contact element is preferably introduced into the free end of the electrical conductor in such a way that the first end section is located completely within the electrical conductor when the contact element is in its axial end position in the electrical conductor.
  • the high relative speed is a speed of at least 5 m / s, preferably at least 10 m / s, particularly preferably at least 20 m / s, more preferably at least 30 m / s and very particularly preferably at least 40 m / s, is provided.
  • the contact element can preferably be accelerated to achieve a corresponding speed pneumatically.
  • a mechanical solution for example the pretensioning and releasing of a spring, can also be provided.
  • an electromagnetic or electrodynamic solution for example using the Lorentz force, can be used to accelerate the contact element.
  • a chemical or thermodynamic (e.g. pyrotechnic) solution for example a controlled explosion, can also be provided.
  • the invention also relates to a device for producing a connection arrangement according to the statements above and below.
  • the device has means for introducing the contact element with its first end section at least in some areas with a material fit into an end face of the free end of the electrical conductor at high speed and / or with high mechanical force.
  • a material connection can occur due to the friction between the first end section of the contact element and the electrical conductor. In contrast to friction welding, apart from local heating in the micro range, there is usually no high heating of the connection.
  • a contact element with a first end section for connection to the free end of the electrical conductor can advantageously be shot into the end face of the electrical conductor by means of the device and thereby connected to it.
  • the high speed creates a material bond.
  • the means are designed as pneumatic, electromagnetic, pyrotechnic or gravitation-supported means or that a means driven by spring force is provided to insert the contact element with its first end section into the face of the free end of the electrical conductor shoot in.
  • any means can be provided in order to introduce the first end section into the end face of the free end of the electrical conductor.
  • the means mentioned are only to be understood as examples.
  • connection arrangement according to the invention can of course also be advantageously implemented for the contact element according to the invention, the electrical connector, the method and the device - and vice versa. Furthermore, benefits that are already related to of the connection arrangement according to the invention were also to be understood in relation to the contact element according to the invention, the electrical connector, the method and the device - and vice versa.
  • FIG. 1 shows in a perspective sectional view an electrical connector 100 according to the prior art.
  • the electrical plug connector 100 has a connection arrangement 101 which comprises an electrical cable 1, in the exemplary embodiment a corrugated cable, and a contact element 102 connected to a free end 2.1 of an electrical conductor 2, in this case the inner conductor of the cable 1.
  • the Electrical cable 1 has a dielectric 3 which envelops the inner conductor or the electrical conductor 2 and electrically separates it from an outer conductor 4 of the cable 1.
  • the electrical connector 100 furthermore has an electrically conductive outer housing 103, which is electrically connected to the outer conductor 4 of the electrical cable 1.
  • connection arrangement 101 of the prior art is electrically and mechanically connected to the electrical conductor 2 or the inner conductor of the cable 1 by means of a soldered connection.
  • the contact element 102 also includes the free end 2.1 of the electrical conductor 2 on its outer circumference. The remaining space is filled with a solder.
  • a crimp connection can also be an alternative to a soldered connection.
  • Another alternative known from the prior art can be to introduce the contact element 102 into an end face 2.2 of the free end 2.1 of the electrical conductor 2 along a bore (not shown) in order to displace the material of the electrical conductor 2 radially outward in order to establish a non-positive connection with a sleeve surrounding the electrical conductor 2.
  • the problem arises that the establishment of the connection is comparatively complex and there is also a jump in diameter in the connection area. Due to the changed cross section, impedance matching may be necessary, which can significantly increase the dimensions of the connector 100 overall.
  • Figure 2 shows an electrical plug connector 5 according to the invention, comprising a connection arrangement 6 according to the invention Figure 1 already described corrugated cable.
  • the contact element 7 penetrates with its first end section 7.1 into the end face 2.2 of the free end 2.1 of the electrical conductor 2 or the inner conductor of the cable 1.
  • the contact element 7 is connected to the free end 2.1 of the electrical conductor 2 in such a way that the contact element 7 does not contact an outer circumference of the electrical conductor 2.
  • the Contact body 7.4 of the contact element 7 does not cover the outer circumference of the electrical conductor 2.
  • a preferred use of the invention provides that the electrical conductor 2 is designed as an inner conductor of the cable 1 and the contact element 7 is designed as an inner conductor contact element of the plug connector 5, as shown.
  • the plug connector 5 can have an electrically conductive outer housing 8 and in principle can be designed as desired.
  • the exposed second end section 7.5 of the contact element can be designed to contact a contact element of a mating connector.
  • the contact element 7 can advantageously be formed in one piece.
  • a sleeve or a sleeve-shaped projection of the contact element 102 can be dispensed with. Furthermore, there is no need to add additional solder to the connection.
  • an outer conductor contact element surrounding the contact element 7, in this case the electrically conductive outer housing 8 of the plug connector 5, can have a constant cross section in an axial section which radially surrounds the first end section 7.1 of the contact element 7 (not shown in the exemplary embodiment).
  • connection between the first end section 7.1 of the contact element 7 and the free end 2.1 of the electrical conductor 2 is an at least regionally directly material connection, ie a material connection without additional welding or soldering additives. It is preferably a cold-welded connection, in particular a gas-tight connection.
  • the connection between the first end section 7.1 of the contact element 7 and the free end 2.1 of the electrical conductor 2 is also preferably a form-fitting connection.
  • the first end section 7.1 is introduced into the end face 2.2 of the free end 2.1 of the electrical conductor 2. This is done with such a high pressure and / or with such a high relative speed that the high pressure and / or the high relative speed causes the first end section 7.1 of the contact element 7 and the electrical conductor 2 to be at least partially materially connected to one another.
  • the first end section 7.1 of the contact element 7 is also introduced into the electrical conductor 2 in such a way that the contact element 7 does not contact the outer circumference of the electrical conductor 2 when the first end section 7.1 is in its end position in the electrical conductor 2.
  • the end position is preferably an axial position in which the contact element 7 has penetrated completely into the electrical conductor 2 with its first end section 7.1. However, it can also be an axial position in which the contact element 7 has not completely penetrated the electrical conductor 2 with its first end section 7.1 and a distance between the end face 2.2 of the free end 2.1 of the electrical conductor 2 and the central section 7.2 of the contact element 7 remains.
  • the free end 2.1 of the electrical conductor 2 is introduced into an initially still completely closed end face 2.2, which is only broken through when the first end section 7.1 of the contact element 7 is introduced.
  • a hole in the end face 2.2 is therefore not absolutely necessary.
  • a bore in particular a center bore, can also be provided.
  • an axial movement in the axial direction which extends along a longitudinal axis L of the electrical cable 1, can occur when the first end section 7.1 of the contact element 7 is introduced into the electrical conductor 2 be superimposed with a rotational movement of the contact element 7.
  • the corresponding frictional energy can promote the creation of a material connection.
  • a device 9 can be provided which has means to introduce the contact element with its first end section 7.1 at least partially cohesively into the end face 2.2 of the free end 2.1 of the electrical conductor 2 at high speed and / or with high mechanical force .
  • the means can be designed as pneumatic, electromagnetic, pyrotechnic or gravitational means in order to accelerate the contact element 7 sufficiently. It can also be provided that a means driven by spring force shoots the contact element 7 with its first end section 7.1 into the end face 2.2 of the free end 2.1 of the electrical conductor 2.
  • a device 9 with a pneumatic means is shown as an example, which is designed as a compressed air cannon 10 for shooting in the contact element 7.
  • the cross section of the first end section 7.1 tapers in the direction of the free end 7.3 of the first end section 7.1, in particular that the first end section 7.1 of the contact element 7 is conically shaped.
  • a corresponding design is in all the exemplary embodiments Figures 2 to 12 shown. Especially those in the Figures 5 to 7 shown embodiments show different variants of an advantageous conical shape of the first end section.
  • the free end 7.3 of the first end section 7.1 of the contact element 7 can, for example, have a rounding 11 (cf. e.g. Figure 3 ) or a tip 12 (see e.g. Figure 4 ).
  • the first end section 7.1 of the contact element 7 can have at least one radial shoulder 13, preferably at least one radial cutting edge 14 and / or an undercut 15.
  • the embodiments of Figures 8 to 11 show, by way of example, different variants with corresponding radial shoulders 13 which enable the contact element 7 to claw into the electrical conductor 2.
  • the illustrated tip 12 of the free end 7.3 can have a corresponding radial shoulder 13.
  • Figure 11 shows an embodiment of the invention in which a radial cutting edge 14 with an undercut 15 is provided.
  • Figure 12 shows an enlarged detail in a sectional view.
  • a chip 16 of the electrical conductor 2 can be completely or partially scraped off by means of the cutting edge 14.
  • the chip 16 can then be conveyed into the undercut 15, as a result of which a form-fitting and / or material connection can be produced and optimized.
  • the first end section 7.1 of the contact element 7 has a coating, preferably a coating made of a material with a lower melting temperature than that of the material of the contact element 7 and that of the material of the electrical conductor 2.
  • a silver coating be provided, which is applied to a contact element 7 made of brass.
EP19162166.3A 2019-03-12 2019-03-12 Agencement de raccordement, élément de contact et procédé de fabrication d'un raccordement Withdrawn EP3709455A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP19162166.3A EP3709455A1 (fr) 2019-03-12 2019-03-12 Agencement de raccordement, élément de contact et procédé de fabrication d'un raccordement
US16/806,231 US20200295477A1 (en) 2019-03-12 2020-03-02 Connection Arrangement, Contact Element and Method for Producing a Connection
CN202010152068.7A CN111697356A (zh) 2019-03-12 2020-03-06 连接装置、接触元件及用于产生连接的方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19162166.3A EP3709455A1 (fr) 2019-03-12 2019-03-12 Agencement de raccordement, élément de contact et procédé de fabrication d'un raccordement

Publications (1)

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EP3709455A1 true EP3709455A1 (fr) 2020-09-16

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US (1) US20200295477A1 (fr)
EP (1) EP3709455A1 (fr)
CN (1) CN111697356A (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11682849B2 (en) 2021-07-09 2023-06-20 Aptiv Technologies Limited Wire assembly with welded contact
EP4312312A1 (fr) * 2022-07-25 2024-01-31 Aptiv Technologies Limited Ensemble de fils avec contact soudé

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4098449A (en) * 1977-03-28 1978-07-04 General Electric Company Terminal connection for aluminum conductor and method of making
CN202119459U (zh) * 2011-07-08 2012-01-18 中国工程物理研究院总体工程研究所 一种压电传感器专用m5接插件
US20160079688A1 (en) 2014-09-11 2016-03-17 Commscope Technologies Llc Coaxial cable and connector assembly

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4098449A (en) * 1977-03-28 1978-07-04 General Electric Company Terminal connection for aluminum conductor and method of making
CN202119459U (zh) * 2011-07-08 2012-01-18 中国工程物理研究院总体工程研究所 一种压电传感器专用m5接插件
US20160079688A1 (en) 2014-09-11 2016-03-17 Commscope Technologies Llc Coaxial cable and connector assembly

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US20200295477A1 (en) 2020-09-17

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