EP0035354B1 - Connecteur électrique à force d'insertion nulle - Google Patents

Connecteur électrique à force d'insertion nulle Download PDF

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Publication number
EP0035354B1
EP0035354B1 EP81300751A EP81300751A EP0035354B1 EP 0035354 B1 EP0035354 B1 EP 0035354B1 EP 81300751 A EP81300751 A EP 81300751A EP 81300751 A EP81300751 A EP 81300751A EP 0035354 B1 EP0035354 B1 EP 0035354B1
Authority
EP
European Patent Office
Prior art keywords
cam
base
cam follower
flange
groove
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
Application number
EP81300751A
Other languages
German (de)
English (en)
Other versions
EP0035354A2 (fr
EP0035354A3 (en
Inventor
Robert Linn Showman
Robert Ney Weber
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.)
TE Connectivity Corp
Original Assignee
AMP 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 AMP Inc filed Critical AMP Inc
Priority to AT81300751T priority Critical patent/ATE9122T1/de
Publication of EP0035354A2 publication Critical patent/EP0035354A2/fr
Publication of EP0035354A3 publication Critical patent/EP0035354A3/en
Application granted granted Critical
Publication of EP0035354B1 publication Critical patent/EP0035354B1/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
    • H01R12/70—Coupling devices
    • H01R12/82—Coupling devices connected with low or zero insertion force
    • H01R12/85—Coupling devices connected with low or zero insertion force contact pressure producing means, contacts activated after insertion of printed circuits or like structures
    • H01R12/88—Coupling devices connected with low or zero insertion force contact pressure producing means, contacts activated after insertion of printed circuits or like structures acting manually by rotating or pivoting connector housing parts
    • 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
    • H01R12/70—Coupling devices
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H01R12/72—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures
    • H01R12/722—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures coupling devices mounted on the edge of the printed circuits

Definitions

  • a zero insertion force circuit board edge electrical connector comprising an insulating housing having an elongate opening for receiving a circuit board along a board insertion path; at least one row of electrical terminals positioned beside the opening and extending in the longitudinal direction thereof, each terminal having a resilient contact portion for engaging the circuit board when such has been inserted into the opening along the insertion path; a groove formed in the bottom of the opening and extending longitudinally thereof; an elongate cam mounted for rotation about its longitudinal axis in the groove and extending longitudinallythereof; and a cam follower having a first surface engaging the cam, the cam follower being displaceable normally of the base of the groove by rotation of the cam, to cause the cam follower to move between a first position in which it displaces the contact portions from the insertion path and a second position in which the cam follower is retracted to allow the contact portions to intersect the insertion path.
  • a rotary cam as opposed to a linear action cam has the advantages that no space is required to accommodate reciprocating movement of the cam and that the cam can be of very simple construction, being for example of oblong or of substantially elliptical, cross-section.
  • a connector as defined in the first paragraph of this specification is characterised in that the cam follower has a second surface spaced from the first surface towards the base of the groove and which is engageable by the cam, as the cam is rotated to cause the cam follower to move from its first to its second position, so that the cam positively drives the cam follower to its second position, in which position the second surface engages the side of the cam nearest to the base of the groove so that the cam follower is secured in its second position by the cam, against unintended movement; and in that the cam follower comprises a first wall extending from a base for engagement with the contact portions, and a second wall extending from the base in the opposite direction to the first wall, the second surface being provided on a flange on the second wall, the flange overlapping the base and being spaced therefrom.
  • DE-A-2,707,122 discloses a zero insertion force electrical connector, in which a cam follower acting upon the contact portions of the terminals of the connector is positively driven by means of a cam, the cam is a linear action cam, and the cam follower could not be positively driven by means of a rotary cam.
  • US-A-3,596,230, US-A-3,899,234, US-A-4,047,782 and US-A-4,069,403 are also representative of the current general state of the art.
  • the connector comprises an insulating housing 10, a cam 12, a cam follower 14 and a plurality of electrical terminals 16.
  • the housing 10 defines an elongate central opening 18 for receiving an edge portion of a circuit board 20 (Figure 1) along a board insertion path A, a row of spacer members 22 on each side of the opening 18 defining recesses 24 each receiving a terminal 16 extending through a passage 26 in the base 27 of the housing 10, which passage communicates with the recess 24.
  • the opening 18 communicates with a groove 28 formed in the base 17, which defines the bottom of the opening 18, the groove 28 extending longitudinally thereof.
  • the groove 28 receives the cam 12 for free rotation therein.
  • the housing 10 has a mounting lug 30 (only one is shown) with a screw hole 32.
  • the cam follower 14 (best seen in Figure 3), which is channel-shaped, comprises a base 34 having parallel side walls 36 and 38, extending in the same direction from the base 34, a wall extending from a flat, cam engagement surface 35 of the base 34, in alignment with, and in the opposite direction to, the side wall 36 and terminating in an inwardly directed flange 42 having a flat, inner abutment surface 43 parallel to, and overlapping the base 34.
  • the base 29 of the groove 28 has therein a longitudinal recess 44 dimensioned to receive the flange 42.
  • the base 34 of the cam follower 14 is disposed ⁇ n the groove 28 so that the surface 35 of the base 34 is engaged by the cam 12, the wall 40 protruding into the groove 28 beside the cam 12.
  • the cam 12 which is elongate in the direction of the groove 28 and which can be rotated from outside the housing 10 as shown in Figure 2, is of elongate cross-section having parallel major sides 45 and convex minor sides 47.
  • the surface 35 of the base 34 is spaced from the surface 43 of the flange 42 by a distance slightly exceeding that between the major sides 45 of the cam 12, the flange 42 overlapping the base 34 by a distance which does not exceed that between the sides 45.
  • the terminals 16 are in the form of metal strips having looped resilient contact portions 50 within the housing, free end portions 52 of the contact portions 50 engaging chamfered outer sides of the free longitudinal edges of the side walls 36 and 38 of the cam follower 14.
  • the terminals have locking tongues 54 on post portions 56 thereof, which portions extend through the passages 26, the tongues 54 serving to retain the terminals 16 in the housing 10.
  • FIG 4 shows the cam follower 14 in a first position in which it has been advanced normally of the base 29 of the groove 28, by the cam 12 so that the side walls 36 and 38 of the cam follower have spread apart the contact portions 50, displacing them from the insertion path A, to allow entry of the board 20 into the opening 18 along such path, with substantially zero insertion force.
  • the cam 12 was rotated in an anticlockwise (as seen in Figures 4 to 6) sense, to an extent limited by a stop 58 on the left hand (as seen in Figures 4 to 6) side of the groove 28.
  • cam follower 14 Since the cam follower 14 is positively driven by the cam 12, in the event that the contact portions 50 should loose resilience through use, they are nevertheless returned fully to their closed positions so as to apply the required contact force against the conductors of the board 20, even in the event that the connector is mounted in an orientation in which the return of the cam follower is not assisted by gravity.
  • the cam follower 14 is secured in its fully retracted position so that it cannot be unintentionally moved under the action of vibration for example, so as to impair the integrity of the electrical connections between the contact portions 50 and the conductors of the circuit board 20.
  • the connector may have only one row of terminals, one side of the cam follower being omitted and the base thereof on that side being arranged to slide against a blank wall of the housing.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)

Claims (6)

1. Connecteur électrique à force d'insertion nulle pour bord de plaquette à circuit, comprenant un boîtier isolant (10) présentant une ouverture allongée (18) destinée à recevoir une plaquette (20) à circuit le long d'un trajet (A) d'insertion de plaquette; au moins une rangée de bornes électriques (16) positionnées à côté de l'ouverture (18) et s'étendant dans sa direction longitudinale, chaque borne (16) comportant une partie élastique (50) de contact destinée à porter contre la plaquette (20) à circuit lorsqu'elle a été insérée dans l'ouverture (18) le long du trajet (A) d'insertion; une gorge (28) formée dans le fond (27) de l'ouverture (18) et s'étendant longitudinalement à celle-ci; une came allongée (12) montée de façon à pouvoir tourner sur son axe longitudinal dans la gorge (28) et s'étendant longitudinalement à celle-ci; et un suiveur de came (14) présentant une première surface (35) portant contre la came, le suiveur de came (14) pouvant être déplacé perpendiculairement à la base (29) de la gorge (28), par rotation de la came (12), afin que le suiveur de came (14) se déplace entre une première position dans laquelle il écarte les parties (50) de contact du trajet d'insertion (A) et une seconde position dans laquelle le suiveur de came (14) est rétracté pour permettre aux parties (50) de contact d'intersecter le trajet d'insertion (A); caractérisé en ce que le suiveur de came (14) présente une seconde surface (43) espacée de la première surface (35), vers la base (29) de la gorge (28), et contre laquelle la came (12) peut porter lorsque l'on fait tourner la came (12) de manière à déplacer le suiveur de came (14) de sa première vers sa seconde position, afin que la came (12) entraîne à force le suiveur de came (14) vers sa seconde position, position dans laquelle la seconde surface (43) porte contre le côté de la came (12) le plus proche de la base (29) de la gorge (28) afin que le suiveur de came (14) soit retenu dans sa seconde position par la came (12), contre tout mouvement indésiré; et en ce que le suiveur de came (14) comprend une première paroi (36) partant d'une base (34) afin de porter contre les parties de contact (50), et une seconde paroi (40) partant de,la base (34), dans la direction opposée à la première paroi (36), le seconde surface (43) comportant un rebord (42) situé sur la seconde paroi (40), le rebord (42) s'étendant partiellement au-dessus de la base (34) de laquelle il est espacé.
2. Connecteur selon la revendication 1, caractérisé en ce que la came (12) est de section allongée, comportant deux grands côtés parallèles (45) et deux petits côtés convexes (47), la base (34) du suiveur de came (14) étant espacée du rebord (42) d'une distance dépassant légèrement celle comprise entre les petits côtés de la came (12), la longueur du rebord (42), etl que vu en section par le suiveur de came (14), étant telle qu'un petit côté (47) de la came (12) est reçu entre la base (34) et le rebord (42) dans la seconde position du suiveur de came (14).
3. Connecteur selon la revendication 1 ou 2, caractérisé en ce qu'un évidement (44) formé dans la base (29) de la gorge (28) est destiné à recevoir le rebord (42) dans la seconde position du suiveur de came (14).
4. Connecteur selon la revendication 1, 2 ou 3, caractérisé en ce qu'une première paroi latérale de la gorge (28) comporte une butée (58) empêchant la poursuite de la rotation de la came (12) dans le même sens après qu'elle a déplacé le suiveur de came (14) de sa seconde vers sa première position.
5. Connecteur selon l'une quelconque des revendications précédentes, caractérisé en ce que les première (35) et seconde (43) surfaces du suiveur de came (14) sont plates et parallèles entre elles.
6. Connecteur selon la revendication 1, dans lequel le suiveur de came (14) comprend un élément isolant en forme de profilé en U comprenant une base (34) d'un côté de laquelle deux parois latérales parallèles (36 et 38) partent dans la même direction, l'autre côté (35) de la base (34) étant plat; caractérisé en ce qu'une autre paroi unique (40) part de l'autre côté de la base (34) du suiveur de came (14), en alignement avec l'une (36) des parois latérales (36 et 38) mais dans la direction opposée à celle-ci, l'autre paroi (40) se terminant per un rebord (42) qui s'étend à peu près perpendiculairement à l'autre paroi (40) se terminant par un rebord (42) qui dessus de la base (34), sur une distance ne dépassant pas celle comprise entre le rebord (42) et la base (34), le rebord (42) présentant, vers la base, une surface plate (43) qui est parallèle à l'autre côté (35) de la base (34).
EP81300751A 1980-03-03 1981-02-24 Connecteur électrique à force d'insertion nulle Expired EP0035354B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81300751T ATE9122T1 (de) 1980-03-03 1981-02-24 Elektrischer stecker mit einer notwendigen einsteckkraft, die gleich null ist.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12622180A 1980-03-03 1980-03-03
US126221 1980-03-03

Publications (3)

Publication Number Publication Date
EP0035354A2 EP0035354A2 (fr) 1981-09-09
EP0035354A3 EP0035354A3 (en) 1981-12-30
EP0035354B1 true EP0035354B1 (fr) 1984-08-22

Family

ID=22423663

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81300751A Expired EP0035354B1 (fr) 1980-03-03 1981-02-24 Connecteur électrique à force d'insertion nulle

Country Status (12)

Country Link
EP (1) EP0035354B1 (fr)
JP (1) JPS56136480A (fr)
AR (1) AR223762A1 (fr)
AT (1) ATE9122T1 (fr)
AU (1) AU532967B2 (fr)
BR (1) BR8101143A (fr)
CA (1) CA1136235A (fr)
DE (1) DE3165616D1 (fr)
ES (1) ES265863Y (fr)
HK (1) HK79487A (fr)
MX (1) MX149461A (fr)
MY (1) MY8800062A (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4553804A (en) * 1984-05-07 1985-11-19 Gte Products Corporation Electrical connector
US4553803A (en) * 1984-05-07 1985-11-19 Gte Products Corporation Electrical connector
JPS6171976U (fr) * 1984-10-05 1986-05-16
US4606594A (en) * 1985-04-22 1986-08-19 Amp Incorporated ZIF connector with wipe
JPS6231385U (fr) * 1985-08-07 1987-02-25
JPS62186476A (ja) * 1986-02-07 1987-08-14 デユポン　ジヤパン　リミテツド コネクタ装置
JPS6330965A (ja) * 1986-07-25 1988-02-09 Hitachi Ltd 取引方式
JPH0633668Y2 (ja) * 1986-11-14 1994-08-31 ミツミテイ−ア−ルダブリユ株式会社 コネクタ
JPH0729590Y2 (ja) * 1990-05-15 1995-07-05 沖電気工業株式会社 紙幣入出金装置
DE4018947A1 (de) * 1990-06-13 1992-01-09 Stocko Metallwarenfab Henkels Vorrichtung zum elektrischen verbinden von leiterplatten
US5632638A (en) * 1993-08-06 1997-05-27 Sumitomo Wiring Systems, Ltd. Card edge connector
JP3669268B2 (ja) * 2000-11-30 2005-07-06 住友電装株式会社 コネクタ
EP1220360B1 (fr) 2000-12-28 2006-06-21 Sumitomo Wiring Systems, Ltd. Connecteur de bord pour carte de circuit imprimé
JP4020026B2 (ja) * 2003-06-09 2007-12-12 三菱電機株式会社 端子台および回路遮断器
JP6325945B2 (ja) * 2014-08-27 2018-05-16 タイコエレクトロニクスジャパン合同会社 モータに用いられる雌型コネクタ

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3899234A (en) * 1974-03-20 1975-08-12 Amp Inc Low insertion force cam actuated printed circuit board connector
US4047782A (en) * 1976-06-23 1977-09-13 Amp Incorporated Rotary cam low insertion force connector with top actuation
CA1088170A (fr) * 1977-11-14 1980-10-21 Marvin L Yeager Connecteur plat de plaquette de circuit imprime a force d'insertion nulle
US4159154A (en) * 1978-04-10 1979-06-26 International Telephone And Telegraph Corporation Zero insertion force connector
US4179177A (en) * 1978-08-23 1979-12-18 Gte Sylvania Incorporated Circuit board connector

Also Published As

Publication number Publication date
MX149461A (es) 1983-11-08
AR223762A1 (es) 1981-09-15
JPS56136480A (en) 1981-10-24
EP0035354A2 (fr) 1981-09-09
MY8800062A (en) 1988-12-31
CA1136235A (fr) 1982-11-23
AU6689281A (en) 1981-09-10
DE3165616D1 (en) 1984-09-27
ES265863U (es) 1983-02-01
ATE9122T1 (de) 1984-09-15
EP0035354A3 (en) 1981-12-30
ES265863Y (es) 1983-07-16
HK79487A (en) 1987-11-06
BR8101143A (pt) 1981-09-08
AU532967B2 (en) 1983-10-20

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