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EP0321468B1 - Borne electrique - Google Patents

Borne electrique Download PDF

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Publication number
EP0321468B1
EP0321468B1 EP87905130A EP87905130A EP0321468B1 EP 0321468 B1 EP0321468 B1 EP 0321468B1 EP 87905130 A EP87905130 A EP 87905130A EP 87905130 A EP87905130 A EP 87905130A EP 0321468 B1 EP0321468 B1 EP 0321468B1
Authority
EP
European Patent Office
Prior art keywords
strip
portions
limbs
terminal according
strip portions
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.)
Expired - Lifetime
Application number
EP87905130A
Other languages
German (de)
English (en)
Other versions
EP0321468A1 (fr
Inventor
Wilhelmus Josephus Aloysius Maria Bots
Antonius Petrus Henricus Maria Van Laarhoven
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.)
Whitaker LLC
Original Assignee
Whitaker LLC
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 GB868621075A external-priority patent/GB8621075D0/en
Priority claimed from GB878706264A external-priority patent/GB8706264D0/en
Application filed by Whitaker LLC filed Critical Whitaker LLC
Priority to AT87905130T priority Critical patent/ATE87130T1/de
Publication of EP0321468A1 publication Critical patent/EP0321468A1/fr
Application granted granted Critical
Publication of EP0321468B1 publication Critical patent/EP0321468B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01R12/59—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures
    • H01R12/65—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures characterised by the terminal
    • 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

  • the invention relates to electrical terminals having posts with compliant anchoring portions for force fitting in through-holes in printed circuit boards to connect electrically the terminals to the conductive paths on the printed circuit boards.
  • U.S. Patent document 4655537 comprises a post, a portion of which is split longitudinally by shearing to form two limbs which are pushed out in opposite directions parallel to the plane of the shear with their sheared surfaces in partially overlapping condition so that during insertion into the through-hole, the limbs are resiliently forced towards each other with progressive sliding engagement of the sheared surfaces across each other in the plane of the shear further into overlapping engagement.
  • Terminals having compliant portions described above have a very high retention force which is desirable when, for example, connection is to be made to the post subsequently by a wire wrapping technique.
  • the very high retention force for subsequent wire wrapping is not necessary and the associated disadvantages such as a high insertion force and the problem of distortion of the through-holes together with the manufacturing difficulties arising as a result of the close tolerances to be maintained should be avoided.
  • the sheared surfaces may be undesirably rough and irregular, providing an uneven frictional resistance.
  • the present invention provides an electrical terminal including a metal post for receipt in an aperture in a printed circuit board and having a compliant portion comprising first and second limbs fixed together at respective opposite ends, having opposed surfaces extending partially overlapping in face-to-face engagement, remote edges of the respective limbs being engageable with the internal periphery of the aperture, during insertion therein, to flex the limbs further together with progressive sliding engagement of the opposed surfaces across each other further into overlapping engagement, characterised in that the limbs are constituted by strip portions with planar, rolled metal, opposed surfaces.
  • the resulting insertion forces are lower than with the prior version as the rolled surfaces have a lower coefficient of friction resisting movement of the limbs together during insertion than the sheared surfaces which are relatively rough.
  • the limbs undergo essentially plastic deformation rather than the resilient deformation of the prior version maintaining the connection by a wedging action, both factors reducing substantially the risk of damage to through-holes.
  • effective connection may be produced without any deformation of the through-hole.
  • the opposite ends of the strip portions may be fixed together by clinching or welding.
  • the limbs of the compliant portion are formed by bending a metal strip through 180 degrees about a transverse axis extending in its plane to bring the rolled surfaces of the strip portions into the partially overlapping relation and fixing the free ends of the strip portions together by clinching or welding thereby retaining the overlapping surfaces in mutual engagement.
  • remote edges of respective strip portions may be coined to present a smooth radius to the through-holes, facilitating receipt therein.
  • the remote edge portions are located in mutually parallel relation, offset in laterally opposite directions from a longitudinal medial axis of the strip and extend laterally beyond overlapping portions of the limbs adjacent the fold, being joined thereby to divergent lead-in edges.
  • interengageable abutment surfaces are provided on the respective strip portions at locations, for example, on overlapping portions between the fold and the divergent lead-in edges.
  • the abutment surfaces may be formed by splitting the individual strip portions in aligned locations along a longitudinal, preferably medial, axis as by shearing, the stock portions on at least one side of the slit of one strip portion and on at least the opposite side of the slit of the other strip portion being pushed in opposite directions towards each other out of the planes of their respective strip portions to present a pair of opposed severed edges which will abut to resist movement together of medial portions of the strip portions.
  • both of the stock portions on respective sides of the resulting slits are pushed out of the planes of the respective strip portions in respective opposite directions so that a sheared edge of one strip portion on one side of the slit is located opposite the sheared edge on the other side of the slit in the other strip portion, the pushed-out portion of the one strip portion protruding into an aligned recess in the other strip portion defined by the respective pushed-out portion.
  • U.S. 4324451 and U.S. 4066326 Examples of other terminals having compliant portions which are relatively difficult to manufacture are illustrated in U.S. 4324451 and U.S. 4066326.
  • EP 45153 discloses a terminal in which interengageable camming portions are provided on opposed folds of a pair of legs for insertion into an aperture in a printed circuit board, while Japanese U.M. 58-14683 discloses a terminal with another different compliant portion.
  • the electrical terminal 11 comprises first and second limbs constituted by strip portions 12 and 12', respectively, with respective rolled surfaces 13 and 13', and joined together in face-to-face engagement at respective opposite ends by an integral fold 14 and a pair of ears 15 extending laterally from each edge of one strip portion 12 and clinched along opposite edges of the other strip portion 12'.
  • Medial parts 16,16' of respective strips 12,12' are offset in opposite directions in the planes of the strips from the longitudinal medial axis so that their remote edge portions 19,19' respectively extend in mutual parallel relation, and laterally beyond, parts 17,17' of the strip portions adjacent the fold 14 to which they are joined by mutually divergent strip parts 18,18', providing remote lead-in edges 20,20', respectively. This results in the rolled surfaces of the medial parts being partially overlapping and in engagement.
  • the terminals are formed from a strip of blanks shown in Figure 5. It will be understood that whilst only the compliant sections are shown in this Figure, various different forms of contact elements may also be incorporated adjacent the carrier 21 according to the desired application of the terminal.
  • the terminals can be produced from thin metal stock by a simple stamping and forming technique without the high degree of precision required for accurately shearing a metal post, the terminals are economic to manufacture and, in view of their lower insertion force, economic to assemble with the circuit board.
  • the strip blank is formed with creases 30 or waisted at locations adjacent but spaced from the fold, hardening the material to enable the blank to be folded about a predetermined radius to bring the surfaces of the folded portions into engagement without cracking at the fold.
  • Abutment surfaces 36,37' for controlling the flexure together, and therefore the insertion force, of the strip portions 32,32' are provided by splitting the individual strip portions in aligned locations along a longitudinal, medial, axis as by shearing, and the stock portions 34,35', 34'35 on both of the respective sides of the resulting slits 33,33' are pushed out of the planes of the respective strip portions 32,32' in respective opposite directions so that a sheared edge 36 of one strip portion 32 on one side of the slit 33 is located opposite the sheared edge 37' on the other side of the slit 33' in the other strip portion 32', the pushed-out portion 34 of one strip portion protruding into an aligned recess 38' in the other strip portion 32' defined by the respective pushed-out portion 34'.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)
  • Multi-Conductor Connections (AREA)
  • Organic Insulating Materials (AREA)
  • Contacts (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Glass Compositions (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Claims (9)

  1. Borne électrique (11) comprenant une broche métallique destinée à être reçue dans un trou (22) d'une plaquette à circuit imprimé et ayant une partie souple comprenant des première et seconde branches (12,12' ; 32,32') fixées entre elles à des extrémités opposées respectives, ayant des surfaces opposées (13,13') s'étendant en chevauchement partiel et en engagement face à face, des bords éloignés (19,19') des branches respectives (12,12') pouvant être engagés avec la périphérie intérieure du trou (22), durant une insertion dans celui-ci, pour approcher davantage par flexion les branches (12,12') avec un engagement progressif de glissement des surfaces opposées (13,13') l'une sur l'autre afin d'accroître l'engagement de chevauchement, caractérisée en ce que :
       les branches (12,12') sont constituées par des parties de bande (12,12') ayant des surfaces opposées planes (13,13') en métal roulé.
  2. Borne selon la revendication 1, caractérisée en ce que les branches (12,12' ; 32,32') de la partie souple sont formées par pliage d'une bande métallique sur 180 degrés autour d'un axe transversal s'étendant dans son plan afin d'amener les surfaces roulées (13,13') des parties de bande (12,12' ; 32,32') dans une disposition de chevauchement partiel, et par fixation entre elles des extrémités libres des parties de bande (12,12'; 32,32').
  3. Borne selon la revendication 1 ou la revendication 2, caractérisée en ce que les extrémités des parties de bande (12,12') sont fixées entre elles par agrafage.
  4. Borne selon la revendication 1 ou la revendication 2, caractérisée en ce que les extrémités des parties de bande (12,12') sont fixées entre elles par soudage.
  5. Borne selon l'une quelconque des revendications précédentes, caractérisée en ce que les parties de bords éloignés (19,19') sont placées dans une disposition mutuellement parallèle, décalées dans des directions latéralement opposées à partir d'un axe longitudinal médian de la bande, et elles s'étendent latéralement au-delà des parties en chevauchement des branches (12,12' ; 32,32') à proximité immédiate du pli (14), étant reliées à celui-ci par des bords d'entrée divergents (20).
  6. Borne selon l'une quelconque des revendications précédentes, caractérisée en ce que des surfaces de butée (36,37') sont prévues sur les parties de bande respectives (12,12' ; 32,32') sur des parties en chevauchement entre le pli (14) et les bords d'entrée divergents (20), ces surfaces pouvant être engagées l'une contre l'autre pour limiter le rapprochement par flexion des branches (12,12' ; 32,32').
  7. Borne selon la revendication 6, caractérisée en ce que les surfaces de butée (36,37') sont formées par fendage des parties de bande individuelles (32,32') en des emplacements alignés suivant un axe longitudinal, des parties de matière (34,34') sur au moins un côté de la fente (33) d'une partie de bande (32) et sur au moins le côté opposé de la lente (33') de l'autre partie de bande (32') étant poussées dans les directions opposées, l'une vers l'autre, hors des plans de leurs parties de bande respectives (32,32') pour présenter deux bords sectionnés opposés (36,37') qui viennent en butée afin de résister au mouvement de rapprochement de portions médianes des parties de bande (32,32').
  8. Borne selon la revendication 7, caractérisée en ce que les deux parties de matière (34,35' ; 34',35) sur des côtés respectifs des fentes résultantes (33,33') sont repoussées des plans des parties de bande respectives (32,32') dans des directions opposées respectives afin qu'un bord cisaillé (36) d'une partie de bande (32) sur un côté de la fente (33) soit placé en opposition au bord cisaillé (37') sur l'autre côté de la fente (33') de l'autre partie de bande (32'), la partie repoussée (34) d'une partie de bande (32) faisant saillie dans un évidement aligné (38') dans l'autre partie de bande (32') définie par la partie repoussée respective (34').
  9. Borne électrique selon l'une quelconque des revendications 1 à 8, caractérisée en ce que des portions médianes (16,16') des bandes respectives (12,12' ; 32,32') sont décalées dans des directions opposées dans les plans des bandes à partir de l'axe longitudinal médian afin que les parties de bords éloignés (19,19') s'étendent respectivement latéralement au-delà de portions (17,17') des parties de bande.
EP87905130A 1986-09-01 1987-07-29 Borne electrique Expired - Lifetime EP0321468B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87905130T ATE87130T1 (de) 1986-09-01 1987-07-29 Elektrisches endglied.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB868621075A GB8621075D0 (en) 1986-09-01 1986-09-01 Stamped & formed compliant pin
GB8621075 1986-09-01
GB878706264A GB8706264D0 (en) 1987-03-17 1987-03-17 Stamped & formed compliant pin
GB8706264 1987-03-17

Publications (2)

Publication Number Publication Date
EP0321468A1 EP0321468A1 (fr) 1989-06-28
EP0321468B1 true EP0321468B1 (fr) 1993-03-17

Family

ID=26291236

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87905130A Expired - Lifetime EP0321468B1 (fr) 1986-09-01 1987-07-29 Borne electrique

Country Status (11)

Country Link
EP (1) EP0321468B1 (fr)
JP (1) JPH0626156B2 (fr)
KR (1) KR930006029B1 (fr)
CN (1) CN87106058A (fr)
AT (1) ATE87130T1 (fr)
DE (1) DE3784938T2 (fr)
DK (1) DK168259B1 (fr)
ES (1) ES2008193A6 (fr)
FI (1) FI91815C (fr)
NO (1) NO175757C (fr)
WO (1) WO1988001795A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6352436B1 (en) * 2000-06-29 2002-03-05 Teradyne, Inc. Self retained pressure connection
US6830465B2 (en) 2001-08-24 2004-12-14 Adc Telecommunications, Inc. Interconnect chassis and module
US6616459B2 (en) 2001-08-24 2003-09-09 Adc Telecommunications, Inc. Card edge contact including compliant end
US6511330B1 (en) 2001-08-24 2003-01-28 Adc Telecommunications, Inc. Interconnect module
CN106410441A (zh) * 2016-07-29 2017-02-15 南京康尼精密机械有限公司 一种电用插接对

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1029105A (fr) * 1973-08-01 1978-04-04 Amp Incorporated Broche de contact pour plaquette de circuit imprime
JPS5163460A (en) * 1974-10-10 1976-06-01 Du Pont Kairobanpin oyobi hoho
US4324451A (en) * 1979-11-19 1982-04-13 Elfab Corporation Card edge connector with pull through bellows contact and lay-over insulator
JPS5918463B2 (ja) * 1980-03-04 1984-04-27 トヨタ自動車株式会社 耐摩耗性焼結合金およびその製法
DE3463991D1 (en) * 1983-08-15 1987-07-02 Amp Inc An improved compliant section for circuit board contact elements

Also Published As

Publication number Publication date
KR880701981A (ko) 1988-11-07
ATE87130T1 (de) 1993-04-15
NO881880L (no) 1988-06-29
CN87106058A (zh) 1988-03-16
NO175757C (no) 1994-11-30
DK168259B1 (da) 1994-02-28
DE3784938T2 (de) 1993-06-24
JPH01503821A (ja) 1989-12-21
EP0321468A1 (fr) 1989-06-28
NO881880D0 (no) 1988-04-29
DE3784938D1 (de) 1993-04-22
WO1988001795A1 (fr) 1988-03-10
ES2008193A6 (es) 1989-07-16
FI91815B (fi) 1994-04-29
KR930006029B1 (ko) 1993-07-01
DK234288D0 (da) 1988-04-28
JPH0626156B2 (ja) 1994-04-06
FI890942A0 (fi) 1989-02-28
FI890942A7 (fi) 1989-02-28
FI91815C (fi) 1994-08-10
DK234288A (da) 1988-04-28
NO175757B (no) 1994-08-22

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