EP0321468B1 - Elektrisches endglied - Google Patents

Elektrisches endglied 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
English (en)
French (fr)
Other versions
EP0321468A1 (de
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/de
Application granted granted Critical
Publication of EP0321468B1 publication Critical patent/EP0321468B1/de
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)
  • Contacts (AREA)
  • Organic Insulating Materials (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Glass Compositions (AREA)
  • Cable Accessories (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)

Claims (9)

  1. Elektrischer Anschluß (11) mit einem Metallstift zur Aufnahme in einer Öffnung (22) in einer gedruckten Schaltungsplatte und mit einem federnd nachgiebigen Bereich mit einem ersten und einem zweiten Schenkel (12, 12'; 32, 32'), die an jeweiligen einander gegenüberliegenden Enden aneinander befestigt sind und einander gegenüberliegende Oberflächen (13, 13') aufweisen, die sich in teilweise überlappendem Seite-auf-Seite-Eingriff erstrecken, wobei äußere Ränder (19, 19') der jeweiligen Schenkel (12, 12') beim Einführen in die Öffnung (22) mit dem inneren Umfang derselben in Eingriff bringbar sind, um die Schenkel (12, 12') bei dem zunehmenden Gleiteingriff der einander gegenüberliegenden Oberflächen (13, 13') aufeinander in zunehmenden überlappenden Eingriff weiter aufeinander zu zu biegen,
    dadurch gekennzeichnet, daß die Schenkel (12, 12') durch Streifenbereiche (12, 12') mit planaren, einander gegenüberliegenden, gewalzten Metalloberflächen (13, 13') gebildet sind.
  2. Anschluß nach Anspruch 1,
    dadurch gekennzeichnet, daß die Schenkel (12, 12'; 32, 32') des federnd nachgiebigen Bereichs gebildet sind durch Biegen eines Metallstreifens um 180° um eine sich in dessen Ebene erstreckende, querverlaufende Achse, so daß die gewalzten Oberflächen (13, 13' der Streifenbereiche (12, 12'; 32, 32') in teilweise Überlappung gebracht werden, sowie durch Befestigen der freien Enden der Streifenbereiche (12, 12'; 32, 32') aneinander.
  3. Anschluß nach Anspruch 1 oder 2,
    dadurch gekennzeichnet, daß die Enden der Streifenbereiche (12, 12') durch Festpressen aneinander befestigt sind.
  4. Anschluß nach Anspruch 1 oder 2,
    dadurch gekennzeichnet, daß die Enden der Streifenbereiche (12, 12') durch Schweißen aneinander befestigt sind.
  5. Anschluß nach einem der vorausgehenden Ansprüche,
    dadurch gekennzeichnet, daß die äußeren Randbereiche (19, 19') parallel zueinander in einander seitlich entgegengesetzten Richtungen von einer Längsmittenachse des Streifens versetzt angeordnet sind und sich seitlich über überlappende Bereiche der Schenkel (12, 12'; 32, 32') in der Nähe des Faltbereichs (14) hinauserstrecken, mit denen sie durch divergierende Einführkanten (20) verbunden sind.
  6. Anschluß nach einem der vorausgehenden Ansprüche,
    dadurch gekennzeichnet, daß Anlageflächen (36, 37') an den jeweiligen Streifenbereichen (12, 12'; 32, 32') an einander überlappenden Bereichen zwischen dem Faltbereich (14) und den divergierenden Einführkanten (20) vorgesehen sind, wobei diese Flächen zum Begrenzen des Zusammenbiegens der Schenkel (12, 12'; 32, 32') miteinander in Eingriff bringbar sind.
  7. Anschluß nach Anspruch 6,
    dadurch gekennzeichnet, daß die Anlageflächen (36, 37') gebildet sind durch Spalten der einzelnen Streifenbereiche (32, 32') an miteinander ausgerichteten Stellen längs einer Längsachse, wobei Materialbereiche (34, 34') wenigstens auf der einen Seite des Schlitzes (33') des einen Streifenbereichs (32) sowie wenigstens auf der gegenüberliegenden Seite des Schlitzes (33') des anderen Streifenbereichs (32) in entgegengesetzten Richtungen aufeinander zu aus den Ebenen ihrer jeweiligen Streifenbereiche (32, 32') derart herausgedrückt sind, daß sie ein Paar einander entgegengesetzter Trennkanten (36, 37') bilden, die aneinander in Anlage kommen, um einer Zusammenbewegung von Mittelbereichen der Streifenbereiche (32, 32') entgegenzuwirken.
  8. Anschluß nach Anspruch 7,
    dadurch gekennzeichnet, daß beide Materialbereiche (34, 35'; 34', 35) auf den jeweiligen Seiten der resultierenden Schlitze (33, 33') aus den Ebenen der jeweiligen Streifenbereiche (32, 32') in jeweils entgegengesetzten Richtungen derart herausgedrückt sind, daß eine Scherkante (36) des einen Streifenbereichs (32) auf der einen Seite des Schlitzes (32) entgegengesetzt zu der Scherkante (37') auf der anderen Seite des Schlitzes (33') in dem anderen Streifenbereich (32') angeordnet ist, wobei der herausgedrückte Bereich (34) des einen Streifenbereichs (32) in eine in dem anderen Streifenbereich (32') befindliche, damit ausgerichtete Vertiefung (38') hineinragt, die durch den jeweiligen herausgedrückten Bereich (34') gebildet ist.
  9. Elektrischer Anschluß nach einem der Ansprüche 1 bis 8,
    dadurch gekennzeichnet, daß Mittelteile (16, 16') der jeweiligen Streifen (12, 12' oder 32, 32') in entgegengesetzten Richtungen in den Ebenen der Streifen von der Längsmittenachse versetzt angeordnet sind, so daß sich die äußeren Randbereiche (19, 19') jeweils seitlich über Teile (17, 17') der Streifenbereiche hinauserstrecken.
EP87905130A 1986-09-01 1987-07-29 Elektrisches endglied Expired - Lifetime EP0321468B1 (de)

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 (de) 1989-06-28
EP0321468B1 true EP0321468B1 (de) 1993-03-17

Family

ID=26291236

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87905130A Expired - Lifetime EP0321468B1 (de) 1986-09-01 1987-07-29 Elektrisches endglied

Country Status (11)

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

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
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
US6830465B2 (en) 2001-08-24 2004-12-14 Adc Telecommunications, Inc. Interconnect chassis and 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 (en) * 1973-08-01 1978-04-04 Amp Incorporated Electrical contact pin for printed circuit board
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
EP0134094B1 (de) * 1983-08-15 1987-05-27 AMP INCORPORATED (a New Jersey corporation) Elastischer Einpressstift für elektrische Leiterplatten

Also Published As

Publication number Publication date
NO175757C (no) 1994-11-30
KR880701981A (ko) 1988-11-07
FI91815B (fi) 1994-04-29
DK234288D0 (da) 1988-04-28
WO1988001795A1 (en) 1988-03-10
FI890942A0 (fi) 1989-02-28
JPH0626156B2 (ja) 1994-04-06
NO175757B (no) 1994-08-22
NO881880L (no) 1988-06-29
CN87106058A (zh) 1988-03-16
FI890942A (fi) 1989-02-28
JPH01503821A (ja) 1989-12-21
NO881880D0 (no) 1988-04-29
DE3784938D1 (de) 1993-04-22
KR930006029B1 (ko) 1993-07-01
EP0321468A1 (de) 1989-06-28
ATE87130T1 (de) 1993-04-15
DK234288A (da) 1988-04-28
DK168259B1 (da) 1994-02-28
FI91815C (fi) 1994-08-10
ES2008193A6 (es) 1989-07-16
DE3784938T2 (de) 1993-06-24

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