US3924918A - Daughter board contact - Google Patents

Daughter board contact Download PDF

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Publication number
US3924918A
US3924918A US404290A US40429073A US3924918A US 3924918 A US3924918 A US 3924918A US 404290 A US404290 A US 404290A US 40429073 A US40429073 A US 40429073A US 3924918 A US3924918 A US 3924918A
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US
United States
Prior art keywords
board
mother
daughter
daughter board
arms
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
US404290A
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English (en)
Inventor
Lindsay Carlton Friend
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.)
FCI Americas Technology LLC
Original Assignee
EI Du Pont de Nemours and Co
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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Priority to US404290A priority Critical patent/US3924918A/en
Priority to US05/482,366 priority patent/US3941442A/en
Publication of USB404290I5 publication Critical patent/USB404290I5/en
Application granted granted Critical
Publication of US3924918A publication Critical patent/US3924918A/en
Anticipated expiration legal-status Critical
Assigned to BERG TECHNOLOGY, INC. reassignment BERG TECHNOLOGY, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: E.I. DU PONT DE NEMOURS AND COMPANY
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
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H01R12/712—Coupling devices for rigid printing circuits or like structures co-operating with the surface of the printed circuit or with a coupling device exclusively provided on the surface of the printed circuit
    • H01R12/714—Coupling devices for rigid printing circuits or like structures co-operating with the surface of the printed circuit or with a coupling device exclusively provided on the surface of the printed circuit with contacts abutting directly the printed circuit; Button contacts therefore provided on the printed circuit
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/36—Assembling printed circuits with other printed circuits
    • H05K3/368—Assembling printed circuits with other printed circuits parallel to each other
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/03—Conductive materials
    • H05K2201/0302—Properties and characteristics in general
    • H05K2201/0311—Metallic part with specific elastic properties, e.g. bent piece of metal as electrical contact
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10613—Details of electrical connections of non-printed components, e.g. special leads
    • H05K2201/10742—Details of leads
    • H05K2201/1075—Shape details
    • H05K2201/10871—Leads having an integral insert stop
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
    • H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
    • H05K3/325—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by abutting or pinching, i.e. without alloying process; mechanical auxiliary parts therefor
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
    • H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
    • H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
    • H05K3/3447—Lead-in-hole components

Definitions

  • the invention relates to a connection system for two parallel circuit boards, commonly referred to as mother and daughter boards.
  • the daughter board is removably mounted on the mother board in electrical engagement with circuitry on the motherboard.
  • Landman, US. Pat. No. 3,701,071 discloses a connector for fonning an electrical connection between spaced parallel mother and daughter boards.
  • the invention disclosed herein is directed to a different type of connection system for parallel mother and daughter boards.
  • terminals are secured on the mother board and include link arms having hooks at the free ends of the arms engagable with the daughter board overlying the mother board.
  • the terminals all include spring contacts so that when the daughter board is laid on top of the terminals and engages the hooks, lateral movement of the board pivots the board about the link arms and brings contact pads on the surface of the daughter board adjacent the mother board into engagement with the spring contacts on the terminals.
  • the hooks hold the daughter board down.
  • other spring contacts may be secured to the mother board for forming electrical connections with other contact pads at desired locations on the daughter board. Latches or other types of detents may be provided for holding the daughter board in electrical engagement with the spring contacts of the terminals and the additional spring contacts.
  • FIG. 1 is a perspective view of a terminal used for forming electrical connections between spaced parallel mother and daughter boards;
  • FIG. 2 is a sectional view taken through the terminal of FIG. 1 illustrating the mother and daughter boards with the daughter board in initial engagement with the terminal;
  • FIG. 3 is a view similar to that of FIG. 2 showing the mother and daughter boards with a terminal in electrical connection with a pad on the daughter board;
  • FIG. 4 is a view illustrating the mother and daughter boards with the daughter board in position to be mounted on the terminals on the mother board;
  • FIG. 5 is a view, partially broken away, taken along line 5-5 of FIG. 3 illustrating the closed mother and daughter boards.
  • the daughter contact illustrated in FIG. 1 forms a physical and electrical connection between spaced and parallel mother board 12 and daughter board 14.
  • the terminal 10 includes a base 16, a solder tab 18 extending from the base 16, a pair of supports 20 extending to one side of the base 16, a pivot link arm 22 extending at an angle from the edge of the base away from tab 18, and a pair of cantilever spring contact arms 24 to either side of the pivot link arm 22.
  • a daughter board engaging hook 26 is provided at the free end of the link arm and electrical contacts are provided at the free ends of the cantilever spring arms 24.
  • the terminal 10 is preferably stamp formed from sheet metal stock of high yield strength.
  • a number of spaced terminals 10 are mounted on the mother board 12 with the solder tabs 18 of the terminals extending through circuit board holes 30 in the mother board and secured to printed circuit 32 on the bottom of the mother board by solder connections 34.
  • the supports 20 of each terminal rest flush on the top of the mother board to prevent movement of the base during the formation of the electrical connections between the mother and daughter board.
  • the terminals 10 are mounted on mother board 12 so that the pivot link arms 22 and cantilever contact arms 24 all extend in the same direction. As illustrated in FIG. 4, the arms. all extend to the right hand side of the mother board.
  • each of these terminals includes a solder tab 38 extending through a circuit board hole and soldered to printed circuitry 40 on the bottom of the circuit board of the mother board, and a single cantilever spring arm 42 joining the tab and extending away from the top of the mother board in the same direction as the link and spring arms of terminals 10.
  • the contact arms 42 also extend to the right of the mother board.
  • Contacts 44 are provided at the free ends of the spring arms 42.
  • Spring arms 42 are the same length as arms 24.
  • Daughter board latches 46 are secured to the edges of the mother board 12 and include daughter board receiving recesses 48.
  • the terminal arms 22 and 24 and contact arms 42 normally project above the lower edges of recesses 48.
  • the terminals 10 are spaced from each other on the mother board 12. Hook-receiving openings 50 are provided in the daughter board with an opening above each terminal 10. Contact pads 52 to either side of openings 50 are provided for electrical connection with the contacts 28 on arms 24. Additionally, a number of contact pads 54 are provided on the daughter board in position for forming electrical connections with the contacts 44 of contact arms 36.
  • the daughter board is brought into electrical connection with the mother board by first positioning the daughter board parallel to and above the mother board with the hooks 26 of terminals 10 extending through the openings 50 so that they engage the top of the daughter board. In this position, the daughter board rests lightly upon contacts 28 and 44. The daughter board is then pushed to the right so that it pivots about the link arms 22 of the spaced terminals 10 and is brought down toward the mother board so that the spring arms 24 of terminals 10 and the arms 42 of contacts 36 are bent down and stressed and their respective contacts 28 and 44 are biased against the contact pads 52 and 54 on the daughter board. Terminals 10 are bent at each end of link arms 22. Thus, the daughter board is pivoted to one side and moved down about the arms 22 toward the mother board and engages flexible latches 46.
  • the latches are bent outwardly from the mother board and then snap back to secure the daughter board in the position of FIG. 5 with daughter board contact pads 52 and 54 in electrical connection with the arms 24 and 36 of the mother board.
  • the daughter board may be released from the mother board by opening the latches 46.
  • terminals 10 disclosed herein include a single link arm 22 and a pair of contact arms 24, it is obvious that connections may be formed between the mother 3 and daughter boards as disclosed through the use of a contact and connection system having a number of link arms and a number of contact arms, whether or not the contact arms are integral with the link arms.
  • a daughter board contact system comprising a mother board, a number of terminals secured to the mother board in spaced relation and extending from one side thereof with each terminal including a linkarm and a daughter-board engaging hook at the free end of the arm, a number of spring contacts extending outwardly of said side of the mother board, a daughter board having a number of hook-receiving openings thereon and contact pads on one side thereof for form- 4 ing electrical connections with said spring contacts, the hooks engaging said openings so that the arms space the mother and daughter board relative to one another and said spring contacts being biased against said pads to form electrical connections between the mother and daughter boards, and means holding the mother and daughter boards together against the spring force of the spring contacts.
  • a daughter board contact system as in claim 2 including a spring contact arm integral witheach link arm.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
US404290A 1973-10-09 1973-10-09 Daughter board contact Expired - Lifetime US3924918A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US404290A US3924918A (en) 1973-10-09 1973-10-09 Daughter board contact
US05/482,366 US3941442A (en) 1973-10-09 1974-06-24 Daughter board contact

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US404290A US3924918A (en) 1973-10-09 1973-10-09 Daughter board contact

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US05/482,366 Division US3941442A (en) 1973-10-09 1974-06-24 Daughter board contact

Publications (2)

Publication Number Publication Date
USB404290I5 USB404290I5 (enrdf_load_html_response) 1975-01-28
US3924918A true US3924918A (en) 1975-12-09

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
US404290A Expired - Lifetime US3924918A (en) 1973-10-09 1973-10-09 Daughter board contact

Country Status (1)

Country Link
US (1) US3924918A (enrdf_load_html_response)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3993383A (en) * 1975-06-02 1976-11-23 Vincent Marino Printed circuit electrical connectors
US4316235A (en) * 1980-03-31 1982-02-16 Motorola, Inc. Movable printed circuit board display
EP0092086A1 (de) * 1982-04-15 1983-10-26 Siemens Aktiengesellschaft Anschlussvorrichtung für ein plattenförmiges elektrisches Gerät
US4412712A (en) * 1981-10-23 1983-11-01 Gte Automatic Electric Labs Inc. Circuit board positioning arrangement
DE3531967A1 (de) * 1984-09-12 1986-03-20 Kitagawa Industries Co. Ltd., Nagoya, Aichi Halter fuer gedruckte leiterplatten, traeger elektronischer bauteile oder dergleichen
US4635325A (en) * 1984-10-03 1987-01-13 Kitagawa Industries Co., Ltd. Substrate fastener
US4858074A (en) * 1987-04-22 1989-08-15 Power Compact, Societe Anonyme Method of assembling power circuits and control circuits on several levels in the same module and a module thus obtained
US4930047A (en) * 1988-09-12 1990-05-29 The Toro Company Apparatus for interconnecting components of a power outlet strip
US5096427A (en) * 1991-01-31 1992-03-17 Thomas & Betts Corporation Socket and header electrical connector assembly
US5173842A (en) * 1991-09-27 1992-12-22 International Business Machines Corporation Electrical assembly with deformable bridge printed circuit board
US5199879A (en) * 1992-02-24 1993-04-06 International Business Machines Corporation Electrical assembly with flexible circuit
US5236098A (en) * 1992-03-13 1993-08-17 Thomas & Betts Corporation Socket and header electrical connector assembly
US5484964A (en) * 1995-02-06 1996-01-16 Dawson, Deceased; Peter F. Surface mounting pin grid arrays
US5525763A (en) * 1994-02-28 1996-06-11 Robertshaw Controls Company Printed circuit board arrangement
US6252175B1 (en) * 1993-11-16 2001-06-26 Igor Y. Khandros Electronic assembly comprising a substrate and a plurality of springable interconnection elements secured to terminals of the substrate
US6303991B1 (en) 1999-05-27 2001-10-16 Fci Americas Technology, Inc. Electronic package and contact therefor
US6688892B2 (en) * 2001-12-26 2004-02-10 Renesas Technology Corp. Clip-type lead frame for electrically connecting two substrates or devices
US20050223553A1 (en) * 2004-03-31 2005-10-13 Loy Garry M Method for providing an electrical connection
US7128579B1 (en) * 2005-08-19 2006-10-31 International Business Machines Corporation Hook interconnect

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4401351A (en) 1981-09-28 1983-08-30 Advant Corporation Expandable card cage
FR2572537B1 (fr) 1984-10-30 1987-05-22 Socapex Pince test de circuit integre
JPH0542620Y2 (enrdf_load_html_response) * 1988-09-09 1993-10-27

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3066367A (en) * 1957-05-23 1962-12-04 Bishop & Babcock Corp Panel mounting fastener
US3479634A (en) * 1967-10-25 1969-11-18 Amp Inc Printed circuit board connectors
US3701071A (en) * 1971-01-18 1972-10-24 Berg Electronics Inc Hinge type circuit board connector block
US3764955A (en) * 1972-05-17 1973-10-09 Amp Inc Connecting and mounting means for substrates
US3790916A (en) * 1972-08-03 1974-02-05 Gte Automatic Electric Lab Inc Edge mount connector terminal

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3066367A (en) * 1957-05-23 1962-12-04 Bishop & Babcock Corp Panel mounting fastener
US3479634A (en) * 1967-10-25 1969-11-18 Amp Inc Printed circuit board connectors
US3701071A (en) * 1971-01-18 1972-10-24 Berg Electronics Inc Hinge type circuit board connector block
US3764955A (en) * 1972-05-17 1973-10-09 Amp Inc Connecting and mounting means for substrates
US3790916A (en) * 1972-08-03 1974-02-05 Gte Automatic Electric Lab Inc Edge mount connector terminal

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3993383A (en) * 1975-06-02 1976-11-23 Vincent Marino Printed circuit electrical connectors
US4316235A (en) * 1980-03-31 1982-02-16 Motorola, Inc. Movable printed circuit board display
US4412712A (en) * 1981-10-23 1983-11-01 Gte Automatic Electric Labs Inc. Circuit board positioning arrangement
EP0092086A1 (de) * 1982-04-15 1983-10-26 Siemens Aktiengesellschaft Anschlussvorrichtung für ein plattenförmiges elektrisches Gerät
US4538210A (en) * 1982-04-15 1985-08-27 Siemens Aktiengesellschaft Mounting and contacting assembly for plate-shaped electrical device
DE3531967A1 (de) * 1984-09-12 1986-03-20 Kitagawa Industries Co. Ltd., Nagoya, Aichi Halter fuer gedruckte leiterplatten, traeger elektronischer bauteile oder dergleichen
US4635326A (en) * 1984-09-12 1987-01-13 Kitagawa Industries Co., Ltd. Substrate fastener
US4635325A (en) * 1984-10-03 1987-01-13 Kitagawa Industries Co., Ltd. Substrate fastener
US4858074A (en) * 1987-04-22 1989-08-15 Power Compact, Societe Anonyme Method of assembling power circuits and control circuits on several levels in the same module and a module thus obtained
US4930047A (en) * 1988-09-12 1990-05-29 The Toro Company Apparatus for interconnecting components of a power outlet strip
US5096427A (en) * 1991-01-31 1992-03-17 Thomas & Betts Corporation Socket and header electrical connector assembly
US5173842A (en) * 1991-09-27 1992-12-22 International Business Machines Corporation Electrical assembly with deformable bridge printed circuit board
US5199879A (en) * 1992-02-24 1993-04-06 International Business Machines Corporation Electrical assembly with flexible circuit
US5236098A (en) * 1992-03-13 1993-08-17 Thomas & Betts Corporation Socket and header electrical connector assembly
US6818840B2 (en) 1993-11-16 2004-11-16 Formfactor, Inc. Method for manufacturing raised electrical contact pattern of controlled geometry
US6252175B1 (en) * 1993-11-16 2001-06-26 Igor Y. Khandros Electronic assembly comprising a substrate and a plurality of springable interconnection elements secured to terminals of the substrate
US7082682B2 (en) 1993-11-16 2006-08-01 Formfactor, Inc. Contact structures and methods for making same
US6538214B2 (en) 1993-11-16 2003-03-25 Formfactor, Inc. Method for manufacturing raised electrical contact pattern of controlled geometry
US20030062398A1 (en) * 1993-11-16 2003-04-03 Formfactor, Inc. Method for manufacturing raised electrical contact pattern of controlled geometry
US5525763A (en) * 1994-02-28 1996-06-11 Robertshaw Controls Company Printed circuit board arrangement
US5687476A (en) * 1994-02-28 1997-11-18 Robertshaw Controls Company Method of making printed circuit arrangement
US5484964A (en) * 1995-02-06 1996-01-16 Dawson, Deceased; Peter F. Surface mounting pin grid arrays
US6303991B1 (en) 1999-05-27 2001-10-16 Fci Americas Technology, Inc. Electronic package and contact therefor
US6688892B2 (en) * 2001-12-26 2004-02-10 Renesas Technology Corp. Clip-type lead frame for electrically connecting two substrates or devices
US20050223553A1 (en) * 2004-03-31 2005-10-13 Loy Garry M Method for providing an electrical connection
US7051432B2 (en) * 2004-03-31 2006-05-30 Elster Electricity, Llc Method for providing an electrical connection
US20060168804A1 (en) * 2004-03-31 2006-08-03 Elster Electricity, Llc Method for providing an electrical connection
US7128579B1 (en) * 2005-08-19 2006-10-31 International Business Machines Corporation Hook interconnect

Also Published As

Publication number Publication date
USB404290I5 (enrdf_load_html_response) 1975-01-28

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Legal Events

Date Code Title Description
AS Assignment

Owner name: BERG TECHNOLOGY, INC., NEVADA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:E.I. DU PONT DE NEMOURS AND COMPANY;REEL/FRAME:008321/0185

Effective date: 19961209