EP0141492A2 - Kontaktstift für elektrische Leiterplatte - Google Patents

Kontaktstift für elektrische Leiterplatte Download PDF

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Publication number
EP0141492A2
EP0141492A2 EP84305416A EP84305416A EP0141492A2 EP 0141492 A2 EP0141492 A2 EP 0141492A2 EP 84305416 A EP84305416 A EP 84305416A EP 84305416 A EP84305416 A EP 84305416A EP 0141492 A2 EP0141492 A2 EP 0141492A2
Authority
EP
European Patent Office
Prior art keywords
pin
aperture
accordance
compliant pin
beams
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Withdrawn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
EP84305416A
Other languages
English (en)
French (fr)
Other versions
EP0141492A3 (de
Inventor
Michael John Dougherty
Alan Stephen Olshansky
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.)
Microdot Inc
Original Assignee
Microdot Inc
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 Microdot Inc filed Critical Microdot Inc
Publication of EP0141492A2 publication Critical patent/EP0141492A2/de
Publication of EP0141492A3 publication Critical patent/EP0141492A3/de
Withdrawn legal-status Critical Current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
    • 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

Definitions

  • Compliant pins are used to facilitate an electrical connection between, for example, printed circuit boards and associated circuitry.
  • Such pin connectors generally utilize a split wall or twin beams that are radially contractable upon insertion of the pin into an aperture thereby to provide a positive electrical and mechanical connection to the circuit board.
  • An example of a compliant pin heretofore known and used is found in U. S. Patent Re. 29,513.
  • a compliant pin effect resilient engagement with the circuit board so that contact pressure is maintained yet be capable of insertion into the circuit board in a high density array without requiring excessive installation force.
  • a compliant pin exhibit contact wiping upon insertion into the circuit board yet be resilient to torque applied to the pin in order to preclude an electrical short circuit between adjacent pins and scoring of the aperture in the circuit board.
  • pins of conventional design in order to meet the force requirements incident to insertion, retention and torque, such known pins are relatively stiff. As a result, the aperture in the printed circuit board often complies more than the pin. This results in significant hole deformation, both electrical and mechanical damage to the circuit board, and ultimate compromise of the integrity of the , electrical circuit.
  • a compliant pin in accordance with the instant invention solves the aforesaid problem by utilizing a shank portion that is split into three beams that are seated in an aperture in a printed circuit board or other mounting member.
  • the pin has conventional wire- wrap, solder or mechanical terminations extending above and below the circuit board, of any desired configuration.
  • the three beams engage the aperture walls and maintain a resilient bias thereon. The resilient bias of the flexed beams against the walls of the aperture, ensures secure mechanical mounting as well as positive electrical contact with the conductive plating internally of the aperture.
  • flexure of an intermediate beam of the pin results in torsion of the outer beams to effect contact wiping and insure good electrical contact.
  • the intermediate beam also functions as an anti-torque element to stabilize the rotational position of the pin within the aperture in the circuit board.
  • a compliant pin 10 in accordance with a constructed embodiment of the instant invention, is preferably fabricated from a single piece of flat metal or other conductive material and adapted to be press fit into an aperture 12 in a printed circuit board 14.
  • the pin 10 is adapted to be electrically connected to conductors of any desired configuration at an upper terminal or head portion 15 and a lower terminal or tail portion 16 thereof (not shown), as well as to be electrically connected to conductive plating 17 within the aperture 12 in the circuit board 14.
  • a minimum thickness circuit board 14 is illustrated in solid lines, the dashed lines indicating the degree of penetration of the pin 10 in a maximum thickness circuit board.
  • the head portion 15 of the pin 10 has shoulders 18 and 19 thereon that limit penetration of the pin 10 into the circuit board 14.
  • a shank portion of the. pin 10 comprises an intermediate beam 20 disposed. between two outboard beams 22 and 24.
  • the beams 20, 22 and 24 are disposed in a generally triangular array thereby to mount the pin 10 within the aperture 12 in the circuit board 14.
  • the beams 20, 22 and 24 are bent radially outwardly so that the edge portions 26, 28 and 30 lie in and define a circle of predetermined diameter greater than the maximum diameter of the aperture 12 in the circuit board 14.
  • the beams 20, 22 and 24 provide for both mechanical attachment of the pin 10 to the circuit board 14 and electrical contact with a desired printed circuit thereon.
  • the intermediate beam 20 is displaced radially to the left and out of the plane of the beams 22 and 24.
  • the beams 22 and 24 are displaced radially outwardly relative to one another and to the beam 20 whereby the beams 20, 22 and 24 are disposed in a generally triangular array.
  • the beams 20, 22 and 24 are provided with arcuate edge surfaces 26, 28 and 30, the radii of development thereof R 1 , R 2 and R 3 , respectively, being equal to the radius R 4 of a minimum aperture A m i n .
  • the beams 20, 22 and 24 will be radially inwardly contracted to the extent that the arcuate edge portions 26, 28 and 30 thereon, respectively, are concentric with the inner surface of the aperture Amin.
  • the beams 20, 22 and 24 are initially expanded, as seen in Figure 4 of the drawings, to a circle having a radius R 6 which is greater than the radius R 5 of a maximum size aperture A max .
  • the arcuate edge surfaces 26, 28 and 30 thereon make line contact with the periphery of the aperture A max -From the foregoing it should be apparent that the arcuate edge portions 26, 28 and 30 of the beams 20, 22 and 24, respectively, never engage the aperture 12 of the circuit board 14 in a manner that brings the circumferentially spaced side corners 32-34, 36-38, and 40-42 thereof into biting contact with the apertures ,A max or A m i n .
  • the aforesaid relationship precludes scoring of the aperture 12 and compromise of circuit board 14 integrity.
  • the entire pin 10 is moved radially to the right as seen in Figure 4, upon insertion into the circuit board 14 by a radial force F 1 .
  • the beams 22 and 24 are biased radially inwardly under the influence of radial forces F 2 and F 3 , resolution of the aforesaid forces resulting in the beam 22 being subjected to a counterclockwise torsional moment TM cc while the beam 24 is subjected to a clockwise torsional moment TM c .
  • the aforesaid torsional moments TM cc and TM c effect contact wiping between the edge surfaces 28 and 30 on the beams 22, 24, respectively, and the electrically conductive surface 17 of the aperture 12 in the circuit board 14.
  • the pin 10 is stabilized against rotation by the intermediate beam 20 since it essentially floats between the beams 22 and 24 thereby to provide a counter torque to any twisting moment applied to the upper terminal or head portion 15 or lower terminal or tail portion 16 of the pin 10.
  • This anti-torque feature results in maintenance of a desired orientation for the upper and lower terminal portions 15 and 16 of the pin 10 on the circuit board 14 to ensure electrical spacing . between adjacent pins.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)
  • Multi-Conductor Connections (AREA)
  • Insertion Pins And Rivets (AREA)
EP84305416A 1983-10-24 1984-08-08 Kontaktstift für elektrische Leiterplatte Withdrawn EP0141492A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US54448483A 1983-10-24 1983-10-24
US544484 1983-10-24

Publications (2)

Publication Number Publication Date
EP0141492A2 true EP0141492A2 (de) 1985-05-15
EP0141492A3 EP0141492A3 (de) 1985-07-03

Family

ID=24172368

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84305416A Withdrawn EP0141492A3 (de) 1983-10-24 1984-08-08 Kontaktstift für elektrische Leiterplatte

Country Status (3)

Country Link
EP (1) EP0141492A3 (de)
JP (1) JPS60101884A (de)
CA (1) CA1222553A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0225400A1 (de) * 1985-12-11 1987-06-16 Burndy Electra N.V. Kontaktstift
US4691979A (en) * 1983-08-04 1987-09-08 Manda R & D Compliant press-fit electrical contact
US4897053A (en) * 1988-11-07 1990-01-30 Burndy Corporation Contact pin
EP0773609A1 (de) 1995-11-07 1997-05-14 Framatome Connectors International Halte- und Kontaktelement in einem Verbinder
EP0887883A2 (de) * 1997-06-24 1998-12-30 ELCO Europe GmbH Einpresskontakt

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60169409U (ja) * 1984-04-19 1985-11-09 若井産業株式会社 釘

Citations (3)

* 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
FR2287827A1 (fr) * 1974-10-10 1976-05-07 Du Pont Broche de plaquette de circuit et procede pour son insertion
EP0105044A1 (de) * 1982-08-31 1984-04-04 Burndy Electra N.V. Elektrischer Stift zum Gebrauch in gedruckten Schaltungsplatten

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5611863A (en) * 1979-07-09 1981-02-05 Kel Kk Connector

Patent Citations (3)

* 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
FR2287827A1 (fr) * 1974-10-10 1976-05-07 Du Pont Broche de plaquette de circuit et procede pour son insertion
EP0105044A1 (de) * 1982-08-31 1984-04-04 Burndy Electra N.V. Elektrischer Stift zum Gebrauch in gedruckten Schaltungsplatten

Cited By (7)

* 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
EP0225400A1 (de) * 1985-12-11 1987-06-16 Burndy Electra N.V. Kontaktstift
US4897053A (en) * 1988-11-07 1990-01-30 Burndy Corporation Contact pin
EP0773609A1 (de) 1995-11-07 1997-05-14 Framatome Connectors International Halte- und Kontaktelement in einem Verbinder
US5816855A (en) * 1995-11-07 1998-10-06 Framatome Connectors International Holding and contact element and connector
EP0887883A2 (de) * 1997-06-24 1998-12-30 ELCO Europe GmbH Einpresskontakt
EP0887883A3 (de) * 1997-06-24 1999-12-08 ELCO Europe GmbH Einpresskontakt

Also Published As

Publication number Publication date
CA1222553A (en) 1987-06-02
EP0141492A3 (de) 1985-07-03
JPS60101884A (ja) 1985-06-05

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19850620

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Effective date: 19860512

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18D Application deemed to be withdrawn

Effective date: 19861125

RIN1 Information on inventor provided before grant (corrected)

Inventor name: OLSHANSKY, ALAN STEPHEN

Inventor name: DOUGHERTY, MICHAEL JOHN