EP3629420B1 - Connection insérée à la force - Google Patents

Connection insérée à la force Download PDF

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Publication number
EP3629420B1
EP3629420B1 EP19200094.1A EP19200094A EP3629420B1 EP 3629420 B1 EP3629420 B1 EP 3629420B1 EP 19200094 A EP19200094 A EP 19200094A EP 3629420 B1 EP3629420 B1 EP 3629420B1
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EP
European Patent Office
Prior art keywords
joining
plug
press joint
connection
connection component
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.)
Active
Application number
EP19200094.1A
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German (de)
English (en)
Other versions
EP3629420A1 (fr
Inventor
Michael Grimm
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.)
Amphenol Tuchel Industrial GmbH
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Amphenol Tuchel Industrial GmbH
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Publication date
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Publication of EP3629420A1 publication Critical patent/EP3629420A1/fr
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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
    • H01R4/58—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 characterised by the form or material of the contacting members
    • H01R4/62—Connections between conductors of different materials; Connections between or with aluminium or steel-core aluminium conductors
    • 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
    • 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
    • H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H01R11/28—End pieces consisting of a ferrule or sleeve

Definitions

  • the invention relates to a press connection for a plug connection component having a first joining surface on a first joining partner and at least one second joining surface on at least one second joining partner, the connection being formed on at least one common contact surface of the joining surfaces by embossing with plastic deformation components.
  • Press connections are state of the art in many designs and areas of application. Connections of at least two individual elements to form a component are used in particular in the area of plug connectors, contact elements, crimp connections and other multi-part current-carrying components in order to support economical, technically reliable and mass-produced products. Press connections are often characterized by an elastic-plastic deformation process, which at least partially or locally deforms at least one individual element with the aim of producing a non-positive and / or material connection.
  • connections of this type are usually the reliable mechanical connection, whereby the overall structure and / or its individual elements must have structural, shape and positional stability even in the event of external mechanical influences and forces.
  • internal loads such as tensions, which can occur as a physical material reaction due to temperature influences, shape memory properties, different expansion coefficients - to name just a few possibilities.
  • a common area of application for press connections are electrical contact-forming and often multi-part components in the form of connector sockets.
  • the DE 10 2008 039 786 B3 describes an electrical connector socket equipped with a lamellar contact grid and a crimp connector.
  • the aim here is to further develop crimp connectors subject to tolerances in their connection area in such a way that a reliable connection situation is achieved and a sufficiently high current-carrying capacity is supported.
  • the tolerances of the joining partners are coordinated with one another in such a way that there is a defined assembly play.
  • Particularly problematic is the fact that bushing sleeves can be drawn or hammered either exactly on the outside or exactly on the inside to a defined target dimension (in the minimum tolerance range).
  • a defined target dimension in the minimum tolerance range
  • crimp connectors can support the aim of reliable connections by folding a sheet metal on at least one folding edge.
  • crimp connector flanges can be produced that are sufficiently thick and compact so that there is an enlarged contact surface of the connection partner, here in the form of a connector socket sleeve.
  • this is formed by at least two layers of sheet metal in the thickness direction and not by homogeneous solid material.
  • a press-in process that is not exactly symmetrical can result in radial displacements of the sheet metal layers with respect to one another, which align again over time and worsen the contact.
  • a basic idea of the invention is to design the joining partners of a press connection in a special way at their connection point and in this way to take into account the peculiarities resulting from a material pairing of different materials of the joining partners.
  • the configurations can relate, among other things, to the surface properties of at least one of the contact surfaces of the press connection.
  • at least one of the contact surfaces can be provided with a coating material at least in some areas.
  • the teaching according to the invention recognizes that the surface quality, preferably of the bore surface and / or the contact surface of the joint partner in a particularly smooth design, is suitable as a possible special embodiment of the connection to at least reduce the mentioned disadvantages of the prior art with regard to a material pairing of different materials of the joint partners.
  • a coating material at least partially to at least one of the joining surfaces.
  • their surface smoothness in the contact area and the properties of the coating material particularly large effective surface connections can be achieved as a result of an increased number of contact points in the micro and macro surface area. This gain in effective surface connection is particularly advantageous with regard to improved current transmission, increased connection strength and reduced electrical resistance change over time.
  • Another advantage of the proposed joint design and the at least regional coating is the increase in service life, i.e. the tolerable load duration of the connection up to failure in the case of joining partners made of materials with a significant difference in thermal expansion coefficients and alternating thermal loads on the connection.
  • the teaching according to the invention also recognizes the desirable advantages of the so-called "intimate connection", which is supported by the design of the press connection. It is possible, through the at least partial coating of at least the surface of a joining partner in the connection area, to realize a particularly good electrically conductive galvanic connection by reducing the electrical resistance in the contact area of the fit. In the sense of an intimate connection, it is still possible to achieve material-fit press connections by pressure welding processes. This also prevents corrosion in the connection area.
  • a first possible realization of the idea according to the invention can take place by a press-fit connection of a copper contact in a solid aluminum rail made of solid material.
  • Components of this type are in particular components of electronics, current-carrying or current-carrying components, for example in electrical machines, in cable harnesses of motor vehicles, control and / or regulating devices, etc. Properties differ considerably in some cases.
  • the invention provides that, in particular when specifying electrical resistance stability over a selected period of time, both the proposed first inventive concept with regard to the special design of at least one of the joining partners at its connection point and the second inventive concept with regard to the formation of the embossing are combined with the further basic ideas of the invention with regard to a coating material at least partially on at least one of the joining surfaces.
  • a coating on both joining surfaces is particularly advantageous, so that the generation of an intermetallic phase is promoted during pressure welding.
  • the at least partial contact surface coating is suitable for at least partially reducing or completely eliminating oxygen contact and thus electrolytic corrosion.
  • a coating material that is possible and suitable according to the invention is tin. It is not only advantageous that tin has a lower melting point than aluminum or copper and therefore the joining partners do not melt when they are coated with tin, but also that its plastic deformability is even at low mechanical loads.
  • the plastic deformation property of tin supports the formation of an increased number of contact points or of intermetallic phases, which leads to a larger effective contact area between the parts to be joined and an improved current transmission due to reduced resistance.
  • the coating is implemented not only partially or over a surface of a joint surface, but also partially or over the entire surface of both or the several joint surfaces, an intimate connection can be achieved in this way that affects both the properties of the current transmission and the mechanical strength in the joint area as well as the properties Corrosion protection improved.
  • Figure 1 comprises the perspective view of a first exemplary embodiment of the first joining partner 10 of a press connection 1 according to the invention.
  • the bore 12 has a first joining surface 11 which is suitable to serve at least partially as a contact surface for the second joining surface 21 of the second joining partner 20.
  • the first joining partner 10 can consist of various ferrous or non-ferrous metals such as aluminum, copper, steel, etc., or be formed from any desired, preferably electrically conductive composite material.
  • Figure 2 shows the sectional view of a first exemplary embodiment of the press connection 1 with a first joining partner 10 and at least one second joining partner 20, which are contacted on their common joining surfaces 11, 21 and are pressed together by means of at least one embossing 14.
  • the selected embodiment of the first joining partner 10 as a solid material avoids the problem of the radial displacement of the layers with respect to one another that occurs as a result of the embossing process in the case of multi-layer folded material.
  • Figure 2 shows an example of two embossings 14 designed as concentric circumferential annular grooves. With a selected material pairing of the first and second joining partners 10, 20 made of aluminum and copper, the annular groove depth can be approximately 1/6 to 1/12 and preferably approximately 1/8 of the solid aluminum material thickness of the first joining partner is 10.
  • FIG 3 the spatial image of the two joining partners 10, 20 in the state connected via the press connection 1 is illustrated in such a way that a plug-in connection component is formed.
  • the embossing 14 is designed as a concentric annular groove and introduced into the first joining partner 10, which is formed by an angled flat material 13 Figure 3
  • a hole 12 is first made in the solid aluminum material of the first joining partner 10.
  • An at least partial coating of the first joining surface 11 is then implemented in the form of an inner surface of the bore.
  • the cylindrical second joining partner 20 which is often also referred to as a high-current contact socket with a hyperbolically shaped contact grid, consists of copper material and is introduced in the correct position into the prepared and coated bore 12 of the first joining partner 10.
  • the second joining surface 21 of the second joining partner 20 can also be at least partially coated before being introduced into the bore 12.
  • both joining surfaces 11, 21 are coated over the entire surface with tin-based material.
  • the press connection 1 is produced by the subsequent elastic-plastic deformation process of at least a partial area of the first joining partner 10 locally adjacent to the bore 12 by massive deformation with a permanent deformation component in the form of an embossing 14. The embossing is carried out in such a way that that in the area of the joining surfaces 11, 21 an intermetallic phase is formed at least between the tin surfaces.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)

Claims (14)

  1. Connexion par pression (1) pour un composant de connexion enfichable comprenant une première surface d'assemblage (11) sur un premier partenaire d'assemblage (10) et au moins une deuxième surface d'assemblage (21) sur au moins un deuxième partenaire d'assemblage (20), la connexion étant formée sur au moins une surface de contact commune en zones des au moins deux surfaces d'assemblage (11, 21) par une gaufrure (14) avec des proportions de déformation plastiques, caractérisée en ce que les matières des partenaires d'assemblage (10, 20) diffèrent les unes des autres et au moins une surface d'assemblage (11, 21) est revêtue au moins en zones avec un matériau de revêtement.
  2. Connexion par pression (1) pour un composant de connexion enfichable selon la revendication 1, caractérisée en ce que les propriétés de matière des partenaires d'assemblage (10, 20) diffèrent les unes des autres en ce qui concerne leurs coefficients de dilatation et/ou leurs modules d'élasticité et/ou leurs potentiels électriques standard.
  3. Connexion par pression (1) pour un composant de connexion enfichable selon la revendication 1, caractérisée en ce que le premier partenaire d'assemblage (10) est formé par un matériau massif.
  4. Connexion par pression (1) pour un composant de connexion enfichable selon la revendication 1, caractérisée en ce que le premier partenaire d'assemblage (10) est formé par une matière en aluminium.
  5. Connexion par pression (1) pour un composant de connexion enfichable selon la revendication 1, caractérisée en ce que le deuxième partenaire d'assemblage (20) est formé par une matière en cuivre.
  6. Connexion par pression (1) pour un composant de connexion enfichable selon la revendication 1, caractérisée en ce qu'au moins une surface d'assemblage (11, 21) est revêtue sur toute sa surface avec un matériau de revêtement, de telle sorte qu'à l'état assemblé des partenaires d'assemblage (10, 20), une connexion intime est formée pour supporter une connexion galvanique électriquement conductrice et/ou une connexion par accouplement de matière en zones.
  7. Connexion par pression (1) pour un composant de connexion enfichable selon la revendication 1, caractérisée en ce que le matériau de revêtement est à base de la matière étain.
  8. Connexion par pression (1) pour un composant de connexion enfichable selon la revendication 1, caractérisée en ce que la proportion de déformation plastique est configurée de telle sorte qu'une connexion de soudage par pression est produite au niveau des surfaces limites de la connexion par pression, de telle sorte qu'une phase intermétallique est formée dans la zone des surfaces d'assemblage (11, 21).
  9. Connexion par pression (1) pour un composant de connexion enfichable selon la revendication 8, caractérisée en ce que la formation d'une phase intermétallique est soutenue par un revêtement avec un matériau de revêtement sur les deux surfaces d'assemblage (11, 21).
  10. Connexion par pression (1) pour un composant de connexion enfichable selon la revendication 1, caractérisée en ce que la gaufrure (14) est introduite, au moins en zones, dans le premier partenaire d'assemblage (10) à proximité locale de l'alésage (12).
  11. Connexion par pression (1) pour un composant de connexion enfichable selon la revendication 10, caractérisée en ce que la gaufrure (14) est configurée en forme de rainure et la profondeur de rainure annulaire est adaptée aux propriétés de matière d'au moins un partenaire d'assemblage (10, 20), en particulier à la propriété de matière du premier partenaire d'assemblage (10).
  12. Composant de connexion enfichable électrique comprenant une connexion par pression (1) selon l'une quelconque des revendications précédentes.
  13. Procédé de fabrication d'une connexion par pression (1) pour des composants de connexion enfichable constitués d'un premier partenaire d'assemblage (10) et d'au moins un deuxième partenaire d'assemblage (20), comprenant les étapes suivantes:
    a. la fourniture des au moins deux surfaces d'assemblage correspondantes (11, 21) pour former la surface de contact de connexion,
    b. le revêtement au moins en zones d'au moins une surface d'assemblage (11, 21),
    c. le positionnement de la première et d'au moins la deuxième surface d'assemblage (11, 21) des partenaires d'assemblage (10, 20) l'une par rapport à l'autre dans la position prévue pour la connexion par pression (1),
    d. la fabrication de la connexion par pression (1) par déformation élastique-plastique d'au moins un partenaire d'assemblage (10, 20) à proximité des surfaces d'assemblage (11, 21), la déformation élastique-plastique ayant lieu par une gaufrure (14), dont la configuration est adaptée à au moins une propriété de matière des partenaires d'assemblage (10, 20).
  14. Procédé de fabrication d'une connexion par pression (1) pour des composants de connexion enfichable selon la revendication 13, caractérisé en ce que la fourniture de la première surface d'assemblage (11) a lieu par un poinçonnage fin.
EP19200094.1A 2018-09-28 2019-09-27 Connection insérée à la force Active EP3629420B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018124086.4A DE102018124086A1 (de) 2018-09-28 2018-09-28 Pressverbindung

Publications (2)

Publication Number Publication Date
EP3629420A1 EP3629420A1 (fr) 2020-04-01
EP3629420B1 true EP3629420B1 (fr) 2021-12-08

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EP19200094.1A Active EP3629420B1 (fr) 2018-09-28 2019-09-27 Connection insérée à la force

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EP (1) EP3629420B1 (fr)
DE (1) DE102018124086A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022128989A1 (de) * 2022-11-02 2024-05-02 Te Connectivity Germany Gmbh Verbindungsanordnung und verfahren zur herstellung einer verbindungsanordnung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1459596A (en) * 1974-03-16 1976-12-22 Amp Inc Crimped electrical connectors
DE102008039786B3 (de) 2008-08-26 2010-04-01 Amphenol-Tuchel Electronics Gmbh Steckverbinderbuchse
SE535938C2 (sv) * 2009-12-16 2013-02-26 Sapa Ab Kompositledare samt metod för tillverkning av kompositledare
DE102011122371A1 (de) * 2011-12-22 2013-06-27 Kathrein-Werke Kg Elektrische Anschlusseinrichtung zur Herstellung einer Lötverbindung

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DE102018124086A1 (de) 2020-04-02
EP3629420A1 (fr) 2020-04-01

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