EP3629420A1 - Connection insérée à la force - Google Patents

Connection insérée à la force Download PDF

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Publication number
EP3629420A1
EP3629420A1 EP19200094.1A EP19200094A EP3629420A1 EP 3629420 A1 EP3629420 A1 EP 3629420A1 EP 19200094 A EP19200094 A EP 19200094A EP 3629420 A1 EP3629420 A1 EP 3629420A1
Authority
EP
European Patent Office
Prior art keywords
joining
connection
press
plug
partner
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.)
Granted
Application number
EP19200094.1A
Other languages
German (de)
English (en)
Other versions
EP3629420B1 (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
Original Assignee
Amphenol Tuchel Industrial GmbH
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Filing date
Publication date
Application filed by Amphenol Tuchel Industrial GmbH filed Critical Amphenol Tuchel Industrial GmbH
Publication of EP3629420A1 publication Critical patent/EP3629420A1/fr
Application granted granted Critical
Publication of EP3629420B1 publication Critical patent/EP3629420B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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 a second joining partner, the connection being formed on at least one regionally common contact surface of the joining surfaces by an 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 one 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-producible products. Press connections are often characterized by an elastic-plastic deformation process which deforms at least one individual element at least partially or locally with the aim of establishing a non-positive and / or material connection.
  • connection of this type is the reliable mechanical connection, the overall structure and, or its individual elements, also having to be structurally, dimensionally and positionally stable under external mechanical influences and forces.
  • internal loads such as stresses, which can occur as a physical material reaction due to temperature influences, shape memory properties, different expansion coefficients - to name just a few options.
  • Lifetime specifications can practically always be achieved so that the connections have to withstand corresponding load cycles of external mechanical loads, internal influences and / or other external influences without their functionality being affected. This requirement known as fatigue strength can be supplemented by the criterion that, for example, current and / or voltage transmission must be guaranteed. Insulation properties may also be required.
  • a common area of application for press connections are current 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 tolerant crimp connectors in their connection area in such a way that a reliable connection situation is achieved and the sufficiently high current carrying capacity is supported.
  • the tolerances of the joining partners be coordinated with one another in such a way that there is a defined assembly play.
  • the fact that socket sleeves can only be pulled or hit exactly to a defined target dimension (in the minimum tolerance range) in terms of production technology is particularly problematic. Comparatively large tolerances thus occur with an exactly drawn internal dimension for receiving the contact grid in the area of the outer circumference.
  • crimping connectors can support the goal of reliable connections by folding a sheet on at least one folding edge.
  • the sheet metal fold can be used to produce crimp connector flanges that are sufficiently thick and compact so that there is an increased contact area of the connection partner, here in the form of a connector socket sleeve.
  • this is formed by at least two layers of sheet in the thickness direction and not by homogeneous solid material. This can result in radial displacements of the sheet metal layers relative to one another as a result of a not exactly symmetrical press-in process, which align again over time and worsen the contact.
  • connection If two or more joining partners with different materials are to be joined to a component using press-fit connections, further influencing factors can be added to the connection. For example, material characteristics that differ from one another, strength properties, elastic-plastic material behavior, corrosive sensitivity, chemical or physical interactions, microcracking and / or electrical standard potentials as well as creep behavior (relaxation) of different characteristics etc. can have a negative impact on the press connection with regard to the objectives.
  • a basic idea of the invention is to design the joining partners of a press connection at their connection point in a special way and in this way to take into account the resulting peculiarities in a material pairing of different materials of the joining partners.
  • the configurations can relate, inter alia, to the surface quality of at least one of the contact surfaces of the press connection.
  • at least one of the contact areas can be provided with a coating material at least in regions.
  • the teaching according to the invention recognizes that the surface quality, preferably of the bore surface and / or the contact surface of the joining partner, in a particularly smooth design, is suitable as a possible special embodiment of the connection, at least to reduce the disadvantages of the prior art mentioned with regard to a material pairing of different materials of the joining 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 area connection is particularly advantageous with regard to improved current transmission, increased connection strength and reduced electrical resistance change over the course of time.
  • Another advantage of the proposed joint design and the at least area-specific coating is the increase in the service life, i.e. the tolerable load duration of the connection until failure in the case of joining partners made of materials with a significant difference in the thermal expansion coefficients from one another and thermal alternating loads on the connection.
  • the teaching of 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 to achieve a particularly good electrically conductive galvanic connection by the at least partial coating of at least the surface of a joining partner in the connection area 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 integral 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 be achieved by press-fitting a copper contact into a solid aluminum rail made of solid material.
  • Components of this type are, in particular, components of electronics, current-carrying or current-conducting components, for example in electrical machines, in wiring harnesses of motor vehicles, control and / or regulating devices, etc.
  • there is a material pairing of the joining partners that relates to the mechanical, electrical and chemical Distinguish some of the properties considerably.
  • the material pairing of aluminum and copper are particularly divergent with regard to their expansion coefficients and their electrical voltage potentials.
  • the invention provides that, in particular when an electrical resistance stability is specified over a selected period of time, both the proposed first basic idea of the invention with regard to the special design of at least one of the joining partners at its connection point and the second basic idea of the invention with regard to the design of the embossing are combined with the further basic principles 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 during pressure welding is promoted.
  • the at least partial contact surface coating is suitable for at least partially reducing or completely eliminating the contact with oxygen and thus electrolytic corrosion.
  • Tin is a possible and suitable coating material according to the invention. It is advantageous not only 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 its plastic deformability even at low mechanical loads. The plastic deformation properties of tin thereby support the formation of an increased number of contact points or intermetallic phases, which results in a larger effective contact area between the joining partners and an improved current transfer due to reduced resistance.
  • the coating is realized not only partially or over a surface of one joining surface, but partially or over the entire surface on both or the several joining surfaces, an intimate connection can be achieved in this way, which affects both the properties of the power transmission and the mechanical strength in the joining area and 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 first joining partner 10 is designed as an angled flat solid material 13, into which at least one bore 12 is made for receiving a second joining partner 20.
  • 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, for example, aluminum, copper, steel, etc., or be formed from any, 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 make contact 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 relative to one another which occurs as a result of the embossing process in the case of multilayer folded material.
  • Figure 2 shows by way of example two embossments 14 designed as concentric circumferential annular grooves.
  • the annular groove depth can be approximately 1/6 to 1/12 and preferably approximately 1/8 of the aluminum solid material thickness of the first joining partner 10.
  • FIG 3 The spatial illustration 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 connection component is formed.
  • the embossing 14 is designed as a concentric annular groove and is introduced into the first joining partner 10, which consists of an angled flat material 13
  • Figure 3 The exemplary embodiment shown in the material pairing of aluminum of the first joining partner 10 and copper of the second joining partner 20 and the geometrical embodiment shown is intended to be implemented by first making a bore 12 in the solid aluminum material of the first joining partner 10. An at least partial coating of the first joining surface 11 is then formed as the 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 hyperbolic contact grid, consists of copper material and is introduced into the prepared and coated bore 12 of the first joining partner 10 in the correct position.
  • 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 their entire area 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 a massive deformation with a permanent deformation component in the form of an embossing 14. The embossing is carried out in this way that an intermetallic phase is formed at least between the tin surfaces in the area of the joining surfaces 11, 21.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
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 true EP3629420A1 (fr) 2020-04-01
EP3629420B1 EP3629420B1 (fr) 2021-12-08

Family

ID=68072263

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19200094.1A Active EP3629420B1 (fr) 2018-09-28 2019-09-27 Connection insérée à la force

Country Status (2)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4366090A1 (fr) * 2022-11-02 2024-05-08 TE Connectivity Germany GmbH Agencement de liaison et procédé de fabrication d'un agencement de liaison

Citations (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
WO2011075044A1 (fr) * 2009-12-16 2011-06-23 Sapa Ab Composant conducteur composite et procédé de fabrication dudit composant
DE102011122371A1 (de) * 2011-12-22 2013-06-27 Kathrein-Werke Kg Elektrische Anschlusseinrichtung zur Herstellung einer Lötverbindung

Patent Citations (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
WO2011075044A1 (fr) * 2009-12-16 2011-06-23 Sapa Ab Composant conducteur composite et procédé de fabrication dudit composant
DE102011122371A1 (de) * 2011-12-22 2013-06-27 Kathrein-Werke Kg Elektrische Anschlusseinrichtung zur Herstellung einer Lötverbindung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4366090A1 (fr) * 2022-11-02 2024-05-08 TE Connectivity Germany GmbH Agencement de liaison et procédé de fabrication d'un agencement de liaison

Also Published As

Publication number Publication date
DE102018124086A1 (de) 2020-04-02
EP3629420B1 (fr) 2021-12-08

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