EP3850711B1 - Elastischer verbindungsstift, verbinder und elektronische vorrichtung mit solchen stiften - Google Patents

Elastischer verbindungsstift, verbinder und elektronische vorrichtung mit solchen stiften Download PDF

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Publication number
EP3850711B1
EP3850711B1 EP19769153.8A EP19769153A EP3850711B1 EP 3850711 B1 EP3850711 B1 EP 3850711B1 EP 19769153 A EP19769153 A EP 19769153A EP 3850711 B1 EP3850711 B1 EP 3850711B1
Authority
EP
European Patent Office
Prior art keywords
blades
pin
end segment
connector
slot
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
EP19769153.8A
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English (en)
French (fr)
Other versions
EP3850711A1 (de
Inventor
François Guillot
Pascal SPOOR
Olivier Roche
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.)
Safran Electronics and Defense SAS
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Safran Electronics and Defense SAS
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Publication date
Application filed by Safran Electronics and Defense SAS filed Critical Safran Electronics and Defense SAS
Publication of EP3850711A1 publication Critical patent/EP3850711A1/de
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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
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H01R12/51—Fixed connections for rigid printed circuits or like structures
    • H01R12/55—Fixed connections for rigid printed circuits or like structures characterised by the terminals
    • H01R12/58—Fixed connections for rigid printed circuits or like structures characterised by the terminals terminals for insertion into holes
    • H01R12/585—Terminals having a press fit or a compliant portion and a shank passing through a hole in the printed circuit board
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H01R13/405—Securing in non-demountable manner, e.g. moulding, riveting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/10—Sockets for co-operation with pins or blades
    • H01R13/11—Resilient sockets
    • H01R13/112—Resilient sockets forked sockets having two legs

Definitions

  • the present invention relates to the field of electrical connection and more particularly to electrical connection connectors.
  • PCB printed circuit board
  • a pin is generally made of conductive metal and comprises an end section that is elastically deformable in a direction transverse to a longitudinal direction of the pin in such a way that the end section has two outer surface portions, diametrically opposed to each other. the other, which are capable of being elastically brought closer together.
  • the end segment can thus be engaged by force in the metallized hole and the elasticity makes it possible to ensure permanent contact between the conductive coating of the metallized hole and the outer surface portions of the end segment of the pin.
  • the document pin DE102011005073 A1 the document pin DE102011005073 A1 .
  • pins are known. The most common for common applications are, for example, split pins with a round section or so-called “banana” pins.
  • spindles cannot be used for applications in which the spindles are more stressed (mechanical, vibratory, thermal constraints, etc.) and in particular in aeronautics where the resistance to these stresses is the subject of standards such as the ARINC 600 standard.
  • connectors of the "PRESS-FIT" type comprising pins whose end section has a so-called “needle-cat" shape, that is to say that the end section comprises, between a proximal solid part and a distal solid part, an intermediate part comprising two outwardly arcuate blades so as to have outer surface portions separated from each other by a distance greater than the greatest transverse dimension from the rest of the end section.
  • the blades have first converging ends connected to the proximal solid part and second converging ends connected to the distal solid part, the outer surface portions providing contact with the metallized hole located on an intermediate part of the blades which is curved.
  • a disadvantage is that this type of pin can be relatively expensive to manufacture to ensure a reliable connection under certain conditions of use.
  • the metallized hole must be long enough to accommodate the distal part and the intermediate part of the end section of the pin, ensuring that the outer surface portions in contact with the electrically conductive coating of the metallized hole are sufficiently engaged in the metallized hole so as not to risk being extracted therefrom under the effect of the stresses applied to the connector and/or to the printed circuit board.
  • the point of contact of the outer surface portions of the pin with the electrically conductive coating of the metallized hole must be at a minimum depth of 0.3 mm with respect to the entry of the metallized hole.
  • An object of the invention is to provide an electrical connector pin ensuring a reliable connection.
  • an electrical connector pin comprising a connection section to the connector and a free end section, the end section having two blades, parallel to each other and spaced from each other, each having two main faces connected to each other by two edges substantially parallel to a longitudinal direction of the pin and one of which is provided with at least one contact portion which extends projecting laterally relative to an outer surface of the connecting section and which is arranged to bite into a surface against which it is applied, the contact portions extending opposite one another and the blades being elastically deformable between a rest position and a close position in which the contact portions are close together.
  • the structure of the pin is relatively simple and the pressure exerted by the contact portions on the surface of the housing intended to receive the pin can be adjusted by varying the distance separating the two edges of the blade and/or the choice of the material.
  • This structure also makes it possible to have a relatively short end section and therefore capable of being used with holes of relatively short length (in particular compared to current solutions of the “PRESS-FIT” type).
  • the end section has a flat cross-section and is provided with a slot passing through the end section in its thickness and extending over a length of the free end section to form the two blades, the two blades each having a first rectilinear edge bordering the slot and a second edge which extends opposite the slot and projecting laterally from which extends the contact portion, the blades being elastically deformable transversely by variation of the width of the slot.
  • the blades are offset relative to each other in a direction perpendicular to the main faces by a distance greater than a thickness of the blades.
  • the invention also relates to an electronic device and a connector implementing such pins.
  • PCB printed circuit board
  • an electronic device comprising a printed circuit board (or PCB), generally designated at 1, comprising an electrically insulating substrate 2 which carries electrically conductive tracks 3 and which is provided with holes 4.1, 4.2 each covered by an electrically conductive internal coating 5 and connected to one of the electrically conductive tracks 3.
  • PCB printed circuit board
  • two series of holes 4.1 are blind and extend coaxially to each other from faces 2.1, 2.2 of the substrate 2 opposite to each other.
  • the other holes 4.2 are through to open on the two faces 2.1, 2.2.
  • the substrate here has a thickness of 3.2 mm and the holes 4.1 a depth of approximately 1.4 mm.
  • the device comprises connectors 10 comprising a base 11 to which pins generally designated as 12 are fixed.
  • the fixing of the connecting sections 12.1 to the base 11 is carried out in a manner known per se, for example by overmoulding.
  • the electrical connection of each connecting section 12.1 to the electric cables 13 is produced in a manner known per se, for example by brazing.
  • the connecting section 12.1 and the end section 12.2 are here made in one piece of metal.
  • the metal used here is one of the following alloys: CuSn4, CuSn6, CuNiSi, CuCrAgFeTiSi.
  • Each pin 12 is made by cutting a sheet of the metal indicated. Provision is made for a surface treatment by depositing a layer of Nickel with a thickness of around 1.5 ⁇ m with a so-called “flash Nickel” finish over a thickness of around 0.3 to 1.0 ⁇ m. Each pin 12 is made by cutting a sheet of the metal indicated.
  • Other electrically conductive materials, in particular metals and alloys, can of course be envisaged.
  • Pin 12 has a flat elongated shape.
  • flat it is meant that pin 12 has a smaller thickness than its width measured perpendicular to its longitudinal direction.
  • Pin 12 here has a rectangular section.
  • the end section 12.2 is provided with a slot 14 passing through the end section in its thickness and extending over a length of the end section 12.2 to form two blades 15.
  • the blades 15 are parallel to each other and each have two main faces which are parallel to each other (one of which is visible flat on the figure 1 ) and which are connected to each other by a first rectilinear edge 15.1 bordering the slot 14 and a second edge 15.2 which extends opposite the slot 14.
  • the blades 15 are elastically deformable transversely by variation of the width of the slot, that is to say that the blades 15 can be moved closer to each other and return elastically to a rest position in which they are parallel. to each other.
  • the end section 12.2 is made of a material such that, when the blades have been brought together until they touch, the elastic limit of the material is not reached, i.e. that is to say that, when the force of approximation has ceased, the blades 15 will be able to return elastically to their rest position.
  • the second edge 15.2 is provided with a contact portion 16 which projects laterally with respect to an outer surface of the connecting section 12.1 and which is arranged to bite the surface against which it is applied.
  • the contact portions 16 here have substantially the shape of a triangle having a sharp apex to bite into the surface of the internal coating 5 against which they are applied.
  • the contact portions 16 are arranged on an end part 12.3 of the end section 12.2.
  • the end part 12.3 is bevelled here to facilitate the introduction of the end section 12.2 into the hole 4.1, 4.2 that it is intended to occupy.
  • the end part 12.3 can be rounded.
  • the connectors are mounted on the electronic card 1 by engaging the end sections 12.2 in the holes 4.1, 4.2. In doing so, the transverse deformation of the elastic blades 15 is caused, this deformation being carried out gradually due to the shape of the end part 15.3 (the bevels also facilitate the centering of the pin in the hole). It will be noted that the force necessary for the deformation of the blades 15 depends in particular on the length of the slot 14. Thus, the length of the slot 14 will be determined as a function of the desired insertion force and the desired pressure of application of the contact portions 16 against the internal coating 5.
  • the end sections 12.2 of the pins 12 are each received in a hole 4.1, 4.2 and the blades 15 remain elastically deformed in such a way that the contact portions 16 are elastically applied against the electrically conductive coating 5.
  • the end section (12.2) is made of a material such that, when the blades (15) bear against one another, the elastic limit of the material is not reached.
  • blind holes 4.1 and relatively short pins 12 makes it possible to maximize the high frequency passbands by minimizing the “stub” effect of the metallized holes on the lines adapted to high frequencies.
  • the pin 12 ' has blades 15' which are offset relative to each other in a direction perpendicular to the main faces of the blades by a distance greater than a thickness of the blades.
  • the electronic device can have any structure whatsoever and in particular: with a number of holes different from that shown, with only blind or through holes, only without facing holes, with a multilayer or single layer PCB.
  • the substrate may have a different thickness and the holes may have a different depth.
  • the technology for mounting components on the printed circuit board is any.
  • the connector may have a structure different from that described.
  • the connector can comply with the ARINC 600 standard or not, be a serial connector or a parallel connector, or in general any pin connector...

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)
  • Multi-Conductor Connections (AREA)

Claims (11)

  1. Stift (12) eines elektrischen Verbinders (10), umfassend einen Verbindungsabschnitt (12.1) zur Verbindung mit dem Verbinder und einen freien Endabschnitt (12.2), wobei der freie Endabschnitt (12.2) zwei parallele Blätter hat, die zueinander beabstandet sind und jeweils zwei Hauptflächen haben, die miteinander über zwei Ränder verbunden sind, die im Wesentlichen parallel zu einer Längsrichtung des Stiftes sind und von denen einer mit mindestens einem Kontaktabschnitt (16) versehen ist, der in Bezug auf eine Außenfläche des Verbindungsabschnitts (12.1) seitlich vorsteht und der ausgebildet ist, um in eine Fläche einzugreifen, gegen die er gedrückt wird, wobei sich die Kontaktabschnitte einander gegenüberliegend erstrecken und die Blätter (15) zwischen einer Ruhestellung und einer angenäherten Stellung, in der die Kontaktabschnitte einander angenähert sind, elastisch verformbar sind.
  2. Stift nach Anspruch 1, bei dem der Endabschnitt einen flachen Querschnitt hat und mit einem Schlitz (14) versehen ist, der den Endabschnitt (12.2) in seiner Dicke durchsetzt und sich über eine Länge des freien Endabschnitts (12.2) erstreckt, um die beiden Blätter (15) zu bilden, wobei die beiden Blätter jeweils einen ersten geradlinigen Rand (15.1) haben, der den Schlitz (14) säumt, und einen zweiten Rand (15.2), der sich dem Schlitz (14) abgewandt erstreckt und von dem der Kontaktabschnitt (16) seitlich vorsteht, wobei die Blätter (15) durch eine Veränderung der Breite des Schlitzes in Querrichtung elastisch verformbar sind.
  3. Stift nach Anspruch 2, bei dem sich der Schlitz (14) ferner in einem Teil des Verbindungsabschnitts (12.1) erstreckt.
  4. Stift nach Anspruch 2 oder 3, bei dem der Endabschnitt (12.2) aus einem Material ist, derart, dass, wenn die Blätter (15) aneinander anliegen, die Elastizitätsgrenze des Materials nicht erreicht wird.
  5. Stift nach einem der vorhergehenden Ansprüche, bei dem die Blätter (15') zueinander in einer Richtung senkrecht zu den Hauptflächen um einen Abstand versetzt sind, der größer als eine Dicke der Blätter ist.
  6. Stift nach einem der vorhergehenden Ansprüche, bei dem die Kontaktabschnitte (16) eine im Wesentlichen dreieckige Form haben.
  7. Stift nach einem der vorhergehenden Ansprüche, bei dem die Kontaktabschnitte (16) auf einem Endstück (12.3) des Endabschnitts (12.2) ausgebildet sind.
  8. Stift nach einem der vorhergehenden Ansprüche, bei dem der Endabschnitt (12.2) ein abgeschrägtes oder abgerundetes Endstück (12.3) hat.
  9. Elektronische Vorrichtung, umfassend:
    - eine gedruckte Leiterplatte (1), die Leiterbahnen (3) und Löcher (4) hat, die jeweils mit einem elektrisch leitenden Überzug (5) versehen sind, der mit einer der Leiterbahnen (3) verbunden ist,
    - mindestens einen Verbinder (10), der mit Stiften (12) nach einem der vorhergehenden Ansprüche versehen ist, wobei die Endabschnitte (12.2) der Stifte (12) jeweils in einem Loch (4) aufgenommen sind und die Blätter (15) derart elastisch verformt sind, dass die Kontaktabschnitte (16) elastisch gegen den elektrisch leitenden Überzug (5) gedrückt sind und in den elektrisch leitenden Überzug (5) eingedrungen sind.
  10. Vorrichtung nach Anspruch 9, bei der zwei der Löcher (4.1) Blindlöcher sind und sich koaxial zueinander von abgewandten Flächen (2.1, 2.2) eines Substrats (2) der Platte (1) erstrecken.
  11. Verbinder (10), umfassend eine Basis, die Stifte (12) nach einem der Ansprüche 1 bis 8 trägt.
EP19769153.8A 2018-09-14 2019-09-13 Elastischer verbindungsstift, verbinder und elektronische vorrichtung mit solchen stiften Active EP3850711B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1858313A FR3086109B1 (fr) 2018-09-14 2018-09-14 Broche de connexion elastique, connecteur et dispositif electronique comportant de telles broches
PCT/EP2019/074592 WO2020053438A1 (fr) 2018-09-14 2019-09-13 Broche de connexion elastique, connecteur et dispositif electronique comportant de telles broches

Publications (2)

Publication Number Publication Date
EP3850711A1 EP3850711A1 (de) 2021-07-21
EP3850711B1 true EP3850711B1 (de) 2023-03-01

Family

ID=65861345

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19769153.8A Active EP3850711B1 (de) 2018-09-14 2019-09-13 Elastischer verbindungsstift, verbinder und elektronische vorrichtung mit solchen stiften

Country Status (5)

Country Link
US (1) US11469529B2 (de)
EP (1) EP3850711B1 (de)
CN (1) CN112640219B (de)
FR (1) FR3086109B1 (de)
WO (1) WO2020053438A1 (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5315072A (en) * 1992-01-27 1994-05-24 Hitachi Seiko, Ltd. Printed wiring board having blind holes
US5257947A (en) * 1992-12-14 1993-11-02 Molex Incorporated Electrical connector with improved hold-down mechanism
WO1996036094A1 (en) * 1995-05-09 1996-11-14 The Whitaker Corporation Board lock for electrical connector
TW380777U (en) * 1998-12-15 2000-01-21 Hon Hai Prec Ind Co Ltd Fixing and holding device for power connector
GB9828656D0 (en) * 1998-12-23 1999-02-17 Northern Telecom Ltd High density printed wiring board having in-via surface mounting pads
US6132247A (en) * 1999-07-01 2000-10-17 Berg Technology, Inc. Metallic one-piece hold-down and an electrical connector with the hold-down
DE102005033998A1 (de) * 2005-07-21 2007-02-01 Adc Gmbh Schneidklemm-Steckverbinder und Einrichtung für die Telekommunikations- und Datentechnik
DE102006011657A1 (de) * 2006-03-12 2007-09-20 Kramski Gmbh Kontaktstift und Verfahren zu dessen Herstellung
CN201364992Y (zh) * 2009-02-18 2009-12-16 实盈电子(东莞)有限公司 零插入力电连接器
DE102011005073A1 (de) * 2011-03-03 2012-09-06 Würth Elektronik Ics Gmbh & Co. Kg Tandem Multi Fork Einpresspin
WO2013039657A2 (en) * 2011-09-14 2013-03-21 Interplex Industries, Inc. Large deflection constrained insulation displacement terminal and connector
EP2639887B1 (de) * 2012-03-15 2017-07-26 Dai-Ichi Seiko Co., Ltd. Druckeinpassbares Steckerendgerät
US8900008B2 (en) * 2012-05-25 2014-12-02 International Business Machines Corporation Universal press-fit connection for printed circuit boards
US8747124B2 (en) * 2012-10-08 2014-06-10 Tyco Electronics Corporation Eye-of-the needle pin contact
KR101558743B1 (ko) * 2014-03-04 2015-10-07 현대자동차주식회사 부품 체결력 증대를 위한 전자회로기판용 체결핀
US10003144B1 (en) * 2016-12-20 2018-06-19 Te Connectivity Corporation Electrical connector assembly and conductive assembly having an intervening wall

Also Published As

Publication number Publication date
CN112640219A (zh) 2021-04-09
FR3086109B1 (fr) 2021-09-24
WO2020053438A1 (fr) 2020-03-19
CN112640219B (zh) 2022-12-02
FR3086109A1 (fr) 2020-03-20
US20210249801A1 (en) 2021-08-12
EP3850711A1 (de) 2021-07-21
US11469529B2 (en) 2022-10-11

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