EP0105044A1 - Broche électrique pour application dans des panneaux à circuit imprimé - Google Patents

Broche électrique pour application dans des panneaux à circuit imprimé Download PDF

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Publication number
EP0105044A1
EP0105044A1 EP19830870089 EP83870089A EP0105044A1 EP 0105044 A1 EP0105044 A1 EP 0105044A1 EP 19830870089 EP19830870089 EP 19830870089 EP 83870089 A EP83870089 A EP 83870089A EP 0105044 A1 EP0105044 A1 EP 0105044A1
Authority
EP
European Patent Office
Prior art keywords
legs
contact pin
printed circuit
hole
pin according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19830870089
Other languages
German (de)
English (en)
Other versions
EP0105044B1 (fr
Inventor
Marcel Verbruggen
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.)
Burndy Electra NV
Original Assignee
Burndy Electra NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from BE0/208920A external-priority patent/BE894258A/nl
Application filed by Burndy Electra NV filed Critical Burndy Electra NV
Publication of EP0105044A1 publication Critical patent/EP0105044A1/fr
Application granted granted Critical
Publication of EP0105044B1 publication Critical patent/EP0105044B1/fr
Expired 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
    • 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

Definitions

  • This invention relates to electrical terminal pins to be mounted through apertures of a base of a printed circuit board and which project from each side of the base board to serve as electrical terminal elements on which connectors may be plugged or to which wire leads may be wrapped (wire-wrap).
  • the mounting section of said pins is adapted to be resiliently deformed upon insertion such as shown for example in U.S. patent 3.783.433 issued on January lst,1974.
  • a split two-legged pin of that kind when inserted,normally takes an unsymmetrical cross-sectional shape which causes the pin to be twisted - and possibly misaligned.
  • Pins also have been manufactured having three resilient legs such as described in U.S. patent 4.066.326 issued January 3,1978.
  • the legs present in this case a symmetrical configuration upon insertion of the pin in a hole of a printed board, only three contact points are obtained and the legs do not act on each other in order to obtain a permanent reaction force.
  • the purpose of the present invention is to develop an improved contact pin in which the amount of mechanical and electrical contact points is increased and in which the resilient legs are acting on each other in order to obtain a permanent reaction force upon insertion of the pin in a hole of a substrate.
  • Another purpose of the present invention is also to provide an improved contact pin which diminishes the stresses between each contact point and the inner wall of the hole in a printed circuit so as to obtain less damage corresponding to equal insertion forces.
  • Still another purpose of the invention is to provide a contact pin which is soldered in a printed circuit with or without addition of tin.
  • the contact pin is provided with a central part adapted for resilient mounting of the pin into a hole of a printed circuit, said central part having three resilient legs which are symmetrically displaced, upon insertion of the pin in a hole, in such a manner that the outer legs are bended towards one another so as to obtain a V-shaped configuration while the inner leg acts like a wedge and is clinged between the two outer legs. .
  • the cross section of the outer legs is cut out so as to be less thick than the central leg to improve the bending towards each other while the extremities of the three legs remain connected with the body of the pin.
  • one extremity of the inner leg is cut-away from the pinbody.
  • the outer edges or surfaces of the resilient legs which realize the contact with the inner wall of the hole in the printed circuit, are provided with a controlled wave-shape configuration which creates a cold welding effect between the conductive tinlayers of the pin and the hole.
  • the electrical contact pin generally designated 10 consists of two outer sections 11, 12 for the connection of electrical components and a central or mounting section 13 adapted for securing the pin 10 into an aperture 15 of a printed circuit board 14.
  • One of the ends of said central section 13 has an enlarged cross-sectional area thus forming a shoulder 16.
  • the pin 10 has two through cuts 17, 18 extending parallel to one another and parallel to the longitudinal axis of the pin thus forming three resilient leg portions 19, 20 and 21.
  • both outer legs 19 and 21 are bent in the same direction while the inner leg 20 is bent in opposite direction thus giving a cross-section such as shown in figure 3, said cross-section being made along the line.AA in figure 2.
  • both outer legs 19 and 21 are made slightly smaller than the central leg 20 . to facilitate their bending towards one another and to take a V-shaped configuration upon insertion into the hole 14 (figure 6).
  • This figure 6 shows clearly how six areas of contacts are obtained between the pin 10 and hole wall 15.
  • the central leg portion 20 has one end thereof cut away from the pinbody 10.
  • the outer edges or surfaces of the resilient legs which realize the contact with the inner wall of the hole in the printed circuit, may be provided with a controlled wave-shape configuration 22 such as shown in figures 5, 9, 11 and 13.
  • the piled up tin material will create after a while a so called “cold welding" in the wave-shape configuration which will increase extraction force.
  • the thickness of the tin-lead plating said pin is used in two particular embodiments.
  • the mounting portion of the pi-n is covered with a thick tin-lead (5 to 10); in this case, the contact pins provided in a printed circuit board are soldered by addition of heat, with or without applying extra solder f.i.a solderring. Because of the large contact-area between the pin and the hole, tin-lead material is peeled of during insertion and only the solder material on the free side walls of the pin and inner walls of the hole may reflow together during solder-process.
  • the thickness of the pin-lead layer on the mounting portion of the pins is less important (1 to 3 ⁇ ) so to obtain a dry connection with the holes in a printed circuit-board.
  • the burrs or peels produced during the insertion operation are smaller in this case than in the previous one, but they could be separated from the pin when shivering the panel and this could give rise to undesired short- circuitings.
  • the formation of peeling could be important at the large contact area between the outer side of the central leg and the inside of the hole (see fig.6).
  • the purpose of the present embodiment is to prevent formation of said peeling and besides still to improve the solder connection between the layers of the pin and the hole of a printed circuit board.
  • this central portion is cut twice in 17 and 18 over a certain distance of its lenght in order to create three resiliently displacable legs 19, 20 and 21.
  • the outer side 30 of the central leg 20 is provided with a lengthwise and centrally disposed depression or groove 32.
  • said depression 32 in the outer side 30 of the pin causes a slight waving of the side walls, the strenght of which is increased by local compression of material in the waved outer side 30 of central leg 20.
  • the side walls of the central leg 20 are conically shaped in 36 towards the inner side 34, this to still improve the wedge like action of central leg 20 between the two outer legs 19, 21.
  • the optimum ratio has also been established between the width M of the central leg 20 and the width B of the outer legs 19, 21.
  • the value of this ratio should be mainly situated between 1,05 and 1,2 and should preferable reach 1,13 with material thickness D of + 0,63 mm and an overall width of the mounting section of + 1,05 mm.
  • the rounded outer edges R2 should have a more important radius than the rounded edges R1 disposed at the inner side of the outer legs.
EP19830870089 1982-08-31 1983-08-31 Broche électrique pour application dans des panneaux à circuit imprimé Expired EP0105044B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
BE208920 1982-08-31
BE0/208920A BE894258A (nl) 1982-08-31 1982-08-31 Elektrische kontaktpen voor gedrukte schakelingen
BE210658 1983-04-29
BE210658 1983-04-29

Publications (2)

Publication Number Publication Date
EP0105044A1 true EP0105044A1 (fr) 1984-04-04
EP0105044B1 EP0105044B1 (fr) 1986-10-29

Family

ID=25653283

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19830870089 Expired EP0105044B1 (fr) 1982-08-31 1983-08-31 Broche électrique pour application dans des panneaux à circuit imprimé

Country Status (3)

Country Link
EP (1) EP0105044B1 (fr)
DE (1) DE3367305D1 (fr)
FI (1) FI833096A (fr)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0141492A2 (fr) * 1983-10-24 1985-05-15 Microdot Inc. Broche pour plaquette de circuit électrique
FR2566969A1 (fr) * 1984-06-30 1986-01-03 Smiths Industries Plc Element de contact electrique d'un connecteur et procede de fabrication de cet element
EP0221319A1 (fr) * 1985-10-18 1987-05-13 Leonhardy GmbH Broche pour les techniques de connexions sans soudure
EP0225400A1 (fr) * 1985-12-11 1987-06-16 Burndy Electra N.V. Broche de contact
GB2186124A (en) * 1986-01-30 1987-08-05 Plessey Co Plc Contact pin
US4691979A (en) * 1983-08-04 1987-09-08 Manda R & D Compliant press-fit electrical contact
US4735587A (en) * 1986-02-12 1988-04-05 Specialty Electronics, Inc. Pin header with board retention tail
AT386699B (de) * 1985-02-27 1988-09-26 Neumayer Karl Kontaktstift
DE3801352A1 (de) * 1988-01-19 1989-07-27 Standard Elektrik Lorenz Ag Leiterplatte
US4897053A (en) * 1988-11-07 1990-01-30 Burndy Corporation Contact pin
EP0457293A1 (fr) * 1990-05-15 1991-11-21 Connector Systems Technology N.V. Connecteur, élément de contact pour circuit imprimé et partie de rétention
WO2006127071A1 (fr) * 2005-05-23 2006-11-30 J.S.T. Corporation Broche a enfoncer
DE102008064590B3 (de) * 2008-12-19 2010-07-15 Tyco Electronics Amp Gmbh Kontaktanordnung zur Verbindung mit einer polygonalen Buchse
US20120074208A1 (en) * 2006-10-02 2012-03-29 Sumitomo Wiring Systems, Ltd. Printed board and bus bar assembly

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1268834A (fr) * 1960-09-29 1961-08-04 Ft Products Ltd Attaches de fixation d'un objet sur un panneau portant un circuit imprimé
GB1087422A (en) * 1964-02-27 1967-10-18 Malco Mfg Company Inc Electrical terminal
US3783433A (en) * 1971-01-18 1974-01-01 Litton Systems Inc Solderless electrical connection system
FR2287827A1 (fr) * 1974-10-10 1976-05-07 Du Pont Broche de plaquette de circuit et procede pour son insertion

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1268834A (fr) * 1960-09-29 1961-08-04 Ft Products Ltd Attaches de fixation d'un objet sur un panneau portant un circuit imprimé
GB1087422A (en) * 1964-02-27 1967-10-18 Malco Mfg Company Inc Electrical terminal
US3783433A (en) * 1971-01-18 1974-01-01 Litton Systems Inc Solderless electrical connection system
FR2287827A1 (fr) * 1974-10-10 1976-05-07 Du Pont Broche de plaquette de circuit et procede pour son insertion

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4691979A (en) * 1983-08-04 1987-09-08 Manda R & D Compliant press-fit electrical contact
EP0141492A3 (fr) * 1983-10-24 1985-07-03 Microdot Inc. Broche pour plaquette de circuit électrique
EP0141492A2 (fr) * 1983-10-24 1985-05-15 Microdot Inc. Broche pour plaquette de circuit électrique
FR2566969A1 (fr) * 1984-06-30 1986-01-03 Smiths Industries Plc Element de contact electrique d'un connecteur et procede de fabrication de cet element
AT386699B (de) * 1985-02-27 1988-09-26 Neumayer Karl Kontaktstift
EP0221319A1 (fr) * 1985-10-18 1987-05-13 Leonhardy GmbH Broche pour les techniques de connexions sans soudure
US4698026A (en) * 1985-10-18 1987-10-06 Leonhardy Gmbh Terminal connection pin for solderless connections
US4775326A (en) * 1985-12-06 1988-10-04 Burndy Electra N.V. Contact pin
EP0225400A1 (fr) * 1985-12-11 1987-06-16 Burndy Electra N.V. Broche de contact
GB2186124A (en) * 1986-01-30 1987-08-05 Plessey Co Plc Contact pin
US4735587A (en) * 1986-02-12 1988-04-05 Specialty Electronics, Inc. Pin header with board retention tail
DE3801352A1 (de) * 1988-01-19 1989-07-27 Standard Elektrik Lorenz Ag Leiterplatte
US4897053A (en) * 1988-11-07 1990-01-30 Burndy Corporation Contact pin
EP0367866A1 (fr) * 1988-11-07 1990-05-16 Burndy Electra N.V. Broche de contact
EP0457293A1 (fr) * 1990-05-15 1991-11-21 Connector Systems Technology N.V. Connecteur, élément de contact pour circuit imprimé et partie de rétention
WO2006127071A1 (fr) * 2005-05-23 2006-11-30 J.S.T. Corporation Broche a enfoncer
US7377823B2 (en) 2005-05-23 2008-05-27 J.S.T. Corporation Press-fit pin
US20120074208A1 (en) * 2006-10-02 2012-03-29 Sumitomo Wiring Systems, Ltd. Printed board and bus bar assembly
US8701971B2 (en) * 2006-10-02 2014-04-22 Sumitomo Wiring Systems, Ltd. Printed board and bus bar assembly
DE102008064590B3 (de) * 2008-12-19 2010-07-15 Tyco Electronics Amp Gmbh Kontaktanordnung zur Verbindung mit einer polygonalen Buchse
US8317551B2 (en) 2008-12-19 2012-11-27 Tyco Electronics Amp Gmbh Contact arrangement for connection with a polygonal socket

Also Published As

Publication number Publication date
FI833096A0 (fi) 1983-08-31
FI833096A (fi) 1984-03-01
DE3367305D1 (en) 1986-12-04
EP0105044B1 (fr) 1986-10-29

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