EP0132070A2 - Elektrischer Randverbinder - Google Patents

Elektrischer Randverbinder Download PDF

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Publication number
EP0132070A2
EP0132070A2 EP84304419A EP84304419A EP0132070A2 EP 0132070 A2 EP0132070 A2 EP 0132070A2 EP 84304419 A EP84304419 A EP 84304419A EP 84304419 A EP84304419 A EP 84304419A EP 0132070 A2 EP0132070 A2 EP 0132070A2
Authority
EP
European Patent Office
Prior art keywords
contact
slot
connector
cavity
substrate
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
EP84304419A
Other languages
English (en)
French (fr)
Other versions
EP0132070A3 (en
EP0132070B1 (de
Inventor
Juergen Ryll
Wolfgang Hoschek
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
Publication of EP0132070A2 publication Critical patent/EP0132070A2/de
Publication of EP0132070A3 publication Critical patent/EP0132070A3/en
Application granted granted Critical
Publication of EP0132070B1 publication Critical patent/EP0132070B1/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
    • H01R12/70—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
    • H01R12/87—Coupling devices connected with low or zero insertion force contact pressure producing means, contacts activated after insertion of printed circuits or like structures acting automatically by insertion of rigid printed or like structures

Definitions

  • This invention relates to an electrical edge connector for a printed circuit board, ceramic substrate or the like and is particularly concerned with providing the so-called LIF, low insertion force or ZIF, zero insertion force function in such a connector.
  • LIF or ZIF functions are desirable in multi-way connectors to reduce engagement and disengagement forces between mating connectors. It is known to provide connectors which can be engaged or disengaged with complementary contacts disengaged so that there is no abrasive engagement of the contact surfaces during connector housing engagement. Contact engagement is then effected by relative movement of complementary contacts, for example, by a cam member moveable on the connector housing.
  • edges of the board or substrate may be sharp, due to their manufacturing process, since the sharp edges may severely damage the contact surfaces.
  • ceramic substrates may be cut to size by laser with resultant sharp edges at the cut portions.
  • an edge connector for a printed circuit board or substrate comprising an insulating housing formed with a contact receiving through cavity and a slot for receiving the board or substrate traversing the cavity at one end, the contact having a pair of spring arms with free ends presenting contact surfaces disposed at opposite sides of the slot for engaging opposite sides of the board or substrate, is characterized in that the contact is moveable within the cavity in the insertion direction of the board or substrate between a first condition in which the contact surfaces are disposed outside opposite sides of the slot, and a second condition in which they are disposed within the slot width.
  • the contact has a portion disposed between the spring arms and which, in the first condition, projects into the slot, whereby engagement of the connector with the board or substrate edge registers the projecting portion with the edge to effect movement of the projecting portion rearwardly of the slot and movement of the contact to the second condition.
  • the projecting portion is suitably formed with a spring extension engaging a ramp surface formed on a wall of the cavity and arranged to bias the contact towards the first condition.
  • Movement of the contact between the first and second conditions is suitably limited by stops formed in the cavity.
  • the contact is suitably formed with divergent spring arms, and the cavity is of reduced width, rearwardly of the slot, whereby on movement of the contact between the first and second conditions, the spring arms are constrained together, by the reduced width cavity portion, to enter the contact surfaces into the slot.
  • the invention also includes a contact in or for a connector according to the invention which comprises a channel shaped body, sides of the channel being extended, at one end to define a pair of spring arms with opposed contact surfaces, characterized in that the base of the channel shaped body is formed with an extension projecting forwardly between the arms to a position rearwardly of the contact surfaces.
  • the extension of the base is suitably folded back at a rearward inclination as a spring arm with its free end spaced from the base of the channel portion between the channel sides.
  • the spring arms formed with the contact surfaces diverge away from the channel shaped body.
  • the connector housing of figures 1 to 5 is formed of resilient plastics insulating material as a unitary molding, and comprises a connector body portion 1 of generally rectangular slab-like form having at one major face, a mounting and retention section 2.
  • the body 1 is formed with five through cavities, 3 arranged in a row and with a slot 4 for receiving a substrate edge extending transversely of the cavities 3 between opposite sides of the body 1, at a lower end as seen in figure 2.
  • the body 1 is formed with a flap 5 extending from side to side of the body across all of the cavities 3 and integral with the body 1 at a hinge 6 at a middle portion of the body between upper and lower ends thereof.
  • the flap 5, at its upper edge is formed with a series of latch projections 7, each having a latch aperture 8 and arranged to project transversely over walls 9, separating the cavities 3, the apertures 8 engaging projection 10 formed on walls 9 to secure the flap 5 in the position shown.
  • the flap 5 with the latch projecting 7 disengaged from wall projections 10, is moveable by bending at the hinge 6 between an open position at 90 degrees counterclockwise from the position shown, to the closed portion shown.
  • the flap 5 is formed adjacent the hinge 6, and internally of the cavities 3, with a series of inwardly projecting shoulders 11, one to each cavity 3, the shoulders having downwardly facing shoulder surfaces for contact retention purposes as will be described later in connection with figures 7 to 10.
  • Each cavity 3 is formed substantially at the level of hinge 6 and on one of the cavity sides bridging the slot 4 with an inward projection 12 having upper and lower ramp surfaces 13, 14 for camming engagement with a portion of a contact as will be described later.
  • These sides of each of the cavities are formed adjacent the other pair of sides with shallow projections defining upward facing shoulders 17 slightly above the level of the slot 4, which serve to limit contact insertion.
  • the other pair of sides, below the shoulders 17 diverge to a lower cavity portion surrounding the slot 4, of enlarged width, as seen in figure 2.
  • the mounting section 2 comprises a pair of spaced latch arms 18 depending from a bridge portion 19 stood away from the body 1.
  • the arms 18 are of channel form open sides of the channels facing outwards as seen in figures 1 and 4, and lower ends of the channels being closed by latch portions 20 having upper and lower ramp surfaces. It will be understood that the lower ends of the arms can be resiliently flexed together to enable engagement or disengagement of the latch projections 20 with complementary means on a fixture for releasably securing the connector to the fixture.
  • the contact of figures 5 and 6 comprises a channel shaped middle portion 21 having at one end a wire connecting section 22 of conventional form comprising a U-shaped wire crimp ferrule 23 and insulation support ferrule 24 extending from a carrier strip 25.
  • a wire connecting section 22 of conventional form comprising a U-shaped wire crimp ferrule 23 and insulation support ferrule 24 extending from a carrier strip 25.
  • opposite sides of the channel are extended in divergent manner, as spring arms 26, to free ends which are turned inwards in arcuate manner to present opposed arcuate contact portions 27.
  • the spring arms 26 are progressively reduced in width towards the free ends.
  • the base of the channel shaped portion 21 is formed between the arms 26 with an extension 28 which, as seen in figure 6, is reduced in width forwardly and is stiffened by a central embossment 29.
  • the extension 28 is further extended by a bent back portion 30 which extends rearwardly and upwardly between the arms 27 to project at its free end 31 above the channel portion 21.
  • the free end 31 is bent down in arcuate manner to present an upwardly convex engagement surface.
  • the base of the channel portion 21 is formed with a downwardly and rearwardly extending retention latch 32 pushed out of an aperture in the base behind the embossment 29.
  • the contact of figures 5 and 6 is severed from the carrier strip 25 and crimped to a stripped wire end 33 in conventional manner to present a terminated lead for assembly to the connector housing of figures 1 to 4 as shown in figures 7 to 1 0 .
  • the mounting section 2 of the connector housing is not shown.
  • the flap 5 is moved to an open condition so that the projections 11 are clear of the cavities 3.
  • the contacts are inserted into respective cavities 3, leading ends of the contact springs 26 initially engaging opposite sides of the cavities 3 below the hinge 6 arid thereby flexed inwardly to allow passage into the cavities until the retention latch 32 enters the groove 15 and engages the shoulder 16 to secure the contact against withdrawal from the housing.
  • the connector can be assembled to a substrate 35 by entering the edge of the substrate 35 into the slot 4 between the contact ends 27 until the edge of the substrate 35 engages the forward lower end of the contact extension 28.
  • the contact ends 27 are clear of the slot and are not engaged by the substrate 35, so that risk of damage of the contact surfaces by sharp edges of the substrate 35 and by abrasion is avoided.
  • Further movement of the substrate 35 into the slot 4 drives the contact upwardly or rearwardly in the cavity 3, the extension 30 being flexed inwardly by the ramp 14 and the spring arms 26 being flexed inwardly by being drawn into the cavity portion of reduced width.
  • the contact ends 27 are thus urged against opposite sides of the substrate, as shown in figure 9 to exert contact force.
  • the substrate 35 is suitably supported in a fixture, now shown, having means complementary to the latch arms of the mounting section 2 of the connector so that the latch arms 18 at their ends 20 engage the complementary means in a snap fit releasably to secure the connector in the condition of figures 9 and 10.
  • the latch arms 18 may be flexed together, and the connector withdrawn from the substrate 35 by upward movement of the housing in the figure 9 position to that of figures 7 and 8.
  • the spring extension 30 and the engagement of its free end 31 with the ramp serves to drive the contact downwards relative to the housing so that the contact ends 27 flex apart from the substrate to the figure 7 condition before the connector is withdrawn from the substrate 35. In this way abrasion of the contact ends 27 with the substrate 35 and engagement with any sharp edges is avoided.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)
EP19840304419 1983-07-14 1984-06-28 Elektrischer Randverbinder Expired - Lifetime EP0132070B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8319019 1983-07-14
GB8319019A GB8319019D0 (en) 1983-07-14 1983-07-14 Electrical edge connector

Publications (3)

Publication Number Publication Date
EP0132070A2 true EP0132070A2 (de) 1985-01-23
EP0132070A3 EP0132070A3 (en) 1987-09-02
EP0132070B1 EP0132070B1 (de) 1991-02-20

Family

ID=10545693

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840304419 Expired - Lifetime EP0132070B1 (de) 1983-07-14 1984-06-28 Elektrischer Randverbinder

Country Status (8)

Country Link
EP (1) EP0132070B1 (de)
JP (1) JPS6039785A (de)
AU (1) AU571241B2 (de)
BR (1) BR8403477A (de)
DE (1) DE3484118D1 (de)
ES (1) ES290657Y (de)
GB (1) GB8319019D0 (de)
MX (1) MX156828A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0375905A1 (de) * 1988-12-28 1990-07-04 Robert Bosch Gmbh Kontaktelement für die elektrische Verbindung eines Kabels mit mindestens einem Kontaktflecken auf einer Leiterplatte
EP0632544A1 (de) * 1993-06-30 1995-01-04 Sumitomo Wiring Systems, Ltd. Leiterplatten-Randverbinder

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8500587A (nl) * 1985-03-01 1986-10-01 Du Pont Nederland Kaartleeshouder.
DE102005040952A1 (de) * 2005-08-30 2007-03-08 Kostal Kontakt Systeme Gmbh Elektrischer Nullkraftsteckverbinder
JP6741200B2 (ja) * 2016-11-28 2020-08-19 Smk株式会社 コンタクト及びそれを使用したコネクタ

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB885040A (en) * 1959-04-02 1961-12-20 Gen Electric Co Ltd Improvements in or relating to electrical socket connectors
GB1039397A (en) * 1964-06-01 1966-08-17 Gerard Benoit Improvements in or relating to electrical connectors
US3656093A (en) * 1967-07-14 1972-04-11 Amp Inc Electrical connectors
US3675320A (en) * 1967-09-02 1972-07-11 Kawai Gakki Susakusho Kk Electric contact member
US4118094A (en) * 1977-03-31 1978-10-03 Trw Inc. Zero-entry force connector
US4348071A (en) * 1980-06-11 1982-09-07 General Motors Corporation Printed circuit connector

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2395676A1 (fr) * 1977-06-23 1979-01-19 Doloise Metallurgique Connecteur pour carte imprimee
JPS608377Y2 (ja) * 1980-02-29 1985-03-25 カシオ計算機株式会社 プリント基板接続装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB885040A (en) * 1959-04-02 1961-12-20 Gen Electric Co Ltd Improvements in or relating to electrical socket connectors
GB1039397A (en) * 1964-06-01 1966-08-17 Gerard Benoit Improvements in or relating to electrical connectors
US3656093A (en) * 1967-07-14 1972-04-11 Amp Inc Electrical connectors
US3675320A (en) * 1967-09-02 1972-07-11 Kawai Gakki Susakusho Kk Electric contact member
US4118094A (en) * 1977-03-31 1978-10-03 Trw Inc. Zero-entry force connector
US4348071A (en) * 1980-06-11 1982-09-07 General Motors Corporation Printed circuit connector

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0375905A1 (de) * 1988-12-28 1990-07-04 Robert Bosch Gmbh Kontaktelement für die elektrische Verbindung eines Kabels mit mindestens einem Kontaktflecken auf einer Leiterplatte
EP0632544A1 (de) * 1993-06-30 1995-01-04 Sumitomo Wiring Systems, Ltd. Leiterplatten-Randverbinder
US5489216A (en) * 1993-06-30 1996-02-06 Sumitomo Wiring Systems, Ltd. Card edge connector assembly

Also Published As

Publication number Publication date
ES290657U (es) 1986-04-16
GB8319019D0 (en) 1983-08-17
AU571241B2 (en) 1988-04-14
DE3484118D1 (de) 1991-03-28
EP0132070A3 (en) 1987-09-02
MX156828A (es) 1988-10-05
EP0132070B1 (de) 1991-02-20
JPS6039785A (ja) 1985-03-01
AU3040184A (en) 1985-01-17
ES290657Y (es) 1986-12-01
BR8403477A (pt) 1985-06-25
JPH053716B2 (de) 1993-01-18

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