US3644661A - Double-sided circuit having terminal-receiving portions - Google Patents

Double-sided circuit having terminal-receiving portions Download PDF

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Publication number
US3644661A
US3644661A US95809A US3644661DA US3644661A US 3644661 A US3644661 A US 3644661A US 95809 A US95809 A US 95809A US 3644661D A US3644661D A US 3644661DA US 3644661 A US3644661 A US 3644661A
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US
United States
Prior art keywords
conductors
substrate
portions
double
pair
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
US95809A
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English (en)
Inventor
Madhu P Asar
John E Bolin
Harry L Maddox
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.)
AT&T Corp
Original Assignee
Western Electric Co 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 Western Electric Co Inc filed Critical Western Electric Co Inc
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Publication of US3644661A publication Critical patent/US3644661A/en
Assigned to AT & T TECHNOLOGIES, INC., reassignment AT & T TECHNOLOGIES, INC., CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). EFFECTIVE JAN. 3,1984 Assignors: WESTERN ELECTRIC COMPANY, INCORPORATED
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • H05K3/3405—Edge mounted components, e.g. terminals
    • 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
    • H05K3/326—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 the printed circuit having integral resilient or deformable parts, e.g. tabs or parts of flexible circuits
    • 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
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/02—Arrangements of circuit components or wiring on supporting structure
    • H05K7/06—Arrangements of circuit components or wiring on supporting structure on insulating boards, e.g. wiring harnesses
    • H05K7/08—Arrangements of circuit components or wiring on supporting structure on insulating boards, e.g. wiring harnesses on perforated boards
    • 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
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0286—Programmable, customizable or modifiable circuits
    • H05K1/0287—Programmable, customizable or modifiable circuits having an universal lay-out, e.g. pad or land grid patterns or mesh patterns
    • H05K1/0289—Programmable, customizable or modifiable circuits having an universal lay-out, e.g. pad or land grid patterns or mesh patterns having a matrix lay-out, i.e. having selectively interconnectable sets of X-conductors and Y-conductors in different planes
    • 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
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/11—Printed elements for providing electric connections to or between printed circuits
    • H05K1/118—Printed elements for providing electric connections to or between printed circuits specially for flexible printed circuits, e.g. using folded portions
    • 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
    • H05K2201/0332—Structure of the conductor
    • H05K2201/0364—Conductor shape
    • H05K2201/0367—Metallic bump or raised conductor not used as solder bump
    • 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
    • H05K2201/05—Flexible printed circuits [FPCs]
    • H05K2201/055—Folded back on itself
    • 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
    • H05K2201/09—Shape and layout
    • H05K2201/09009—Substrate related
    • H05K2201/091—Locally and permanently deformed areas including dielectric material
    • 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
    • H05K2201/09—Shape and layout
    • H05K2201/09209—Shape and layout details of conductors
    • H05K2201/095—Conductive through-holes or vias
    • H05K2201/096—Vertically aligned vias, holes or stacked vias
    • 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
    • H05K2201/10227—Other objects, e.g. metallic pieces
    • H05K2201/1034—Edge terminals, i.e. separate pieces of metal attached to the edge of the PCB
    • 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
    • H05K3/306—Lead-in-hole components, e.g. affixing or retention before soldering, spacing means
    • 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
    • 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
    • H05K3/40—Forming printed elements for providing electric connections to or between printed circuits
    • H05K3/403—Edge contacts; Windows or holes in the substrate having plural connections on the walls thereof

Definitions

  • ABSTRACT A flexible, semirigid substrate, composed of a nonconducting material, supports a plurality of spaced, longitudinal conductors on one side thereof and a plurality of parallel, spaced, transverse conductors on the other side thereof. Through-hole connections are made through the substrate between selected longitudinal conductors and selected transverse conductors.
  • the transverse conductors extend to a common edge of the substrate, which is formed with a longitudinal fold.
  • the portion of each of the transverse conductors which extends over the longitudinal fold in the substrate is formed with an elongated opening which is disposed symmetrically about the axis of the transverse conductor.
  • the longitudinal opening provides a saddle for receiving a portion of a terminal which rests in the saddle and can be subsequently soldered with the transverse conductor associated with the saddle.
  • An example of an electrical device requiring interconnecting wiring is an electrical communications switch, such as a crossbar switch.
  • the conventional crossbar switch has been of sufficient size to permit interconnecting conductors and wiring between selected terminals of the switch to be assembled and secured with the switch with little difficulty.
  • Another object of this invention is to provide a new and improved double-sided circuit having terminal-receiving portions which facilitate the easy assembly and securing of the circuit with closely spaced terminals in an area of high terminal density.
  • Still another object of this invention is the provision of a new and improved double-sided circuit which is relatively thin and semirigid to permit the circuit to be inserted between closely spaced rows of terminals and assembled with terminals of one row for interconnecting selected terminals within the row.
  • a further object of this invention is the provision of a new and improved double-sided circuit having terminating conductors formed with saddlelike openings for assembly and securing with closely spaced terminals of an electrical device to interconnect selected ones of the terminals.
  • FIG. 1 is a partial perspective view of an electrical device such as a small crossbar switch showing an area of high terminal density on one side of the switch;
  • FIG. 3 is a sectional view, taken along line 3-3 of FIG. 2, showing a cross section of the circuit with a terminal of an electrical device, shown in phantom view, being assembled with the circuit;
  • FIG. 5 is a partial perspective view showing a terminal assembled and secured within a saddle portion of a conductor of a double-sided circuit.
  • FIG. 1 there is illustrated in partial view an electrical device, such as a small crossbar switch, designated generally by the reference numeral 11.
  • the switch 11 is of the type described and claimed in the aforementioned U.S. Pat. No. 3,445,795.
  • a plurality of terminals 12-12 extend from a rather confined area of one side of the switch and are connected to circuit portions of the switch, such as switching contacts, to provide interconnections between the circuit portions and external circuits.
  • the terminals are arranged in spaced rows with each terminal in each row being spaced 0.209 inch from adjacent terminals in'the same row. Each row of terminals is 0.220 inch from adjacent rows of terminals.
  • a plurality of groups 17A through 17L of terminating conductors 18-18 are secured to the opposite side of the substrate l4 and extend generally in a transverse direction between opposite longitudinal edges 19 and 21 of the substrate.
  • the leftmost conductor extends substantially across the entire width of the substrate 14 and the rightmost conductor extends from the longitudinal edge 19 toward the longitudinal edge 21 but only for a short distance.
  • the remaining terminating conductors 18-18 extend varying distances from the edge 19 of the substrate 14 toward the edge 21 thereof.
  • the remaining groups 178 through 17L of the terminating conductors 18- 18 are arranged in a similar fashion.
  • FIG. 3 there is illustrated a cross section of the double-sided circuit 13, taken along line 3-3 of FIG. 2. Also illustrated in phantom view is ,one terminal 12 extending from the switch 11 with an intermediate portion of the terminal being positioned within the saddle 26. It is noted that the saddle 26. does not provide an opening wherein the terminal 12 passes through the circuit, but rather provides a nesting facility ontowhich the intermediate portion of the associated terminal is positioned. This permits an easy and fast assembly of the double-sided circuit 13 with a selected row of the terminals 12-12.
  • a first one of the double-sided circuits 13-13 is positioned beneath the lowermost row of terminals 12-12 with longitudinal edge 21 of the circuit being positioned substantially adjacent to the portion of the switch 11 from which the terminals extend.
  • the circuit is manipulated to align the leftmost terminating conductor 18 of the circuit with the leftmost terminal 12 of the switch 11 in the lowermost row.
  • the terminating conductors 18-18 of the double-sided circuit 13 have been placed on the substrate 14 in a parallel and spaced fashion with the centerline spacing between the terminating conductors being equal to the centerline spacing between the terminals in any row.
  • the terminating conductors 18- 18 are now aligned with associated terminals 12-12 with which they are to be assembled and secured.
  • the circuit 13 is then raised so that portions of each of the terminals 12-12 are engaged by the saddle 26 of the associated terminating conductors 18-18.
  • the soldering operation of soldering the terminating conductors to the associated terminals 12-12 of a given row can be accomplished in a relatively short period of time and with relative ease. This permits an operator who is performing the soldering operation to move a soldering device and solder supply in a relatively straight line along the longitudinal path of the saddles 26-26 adjacent to the free ends of the tenninals 12-12.
  • the operator then places a second circuit 13 between the lowermost row of terminals 12-12 and the next-to-lowermost row of terminals.
  • the aligning and assembling procedure then follows the same pattern as that outlined in assembling the circuit 13 with the lowermost row of terminals 12-12. This pattern is followed until each row of terminals 12-12 is assembled and electrically secured with an associated one of the double-sided printed circuits 13-13.
  • the width of the double-sided printed circuit 13 is sufficient to permit a substantial free-end portion of the terminal 12 to extend from the saddles 26-26 after the circuit has been assembled and secured with the terminals. This substantial freeend portion of the terminals 12-12 permits subsequent wirewrap connections to be made between the terminals and external circuits which utilize the switching capabilities of the switch 11.
  • the semirigid nature of the printed circuit 13 permits the operator to easily manipulate and position the circuits between the closely spaced rows of terminals 12-12 and to easily align the circuit with the associated terminals. Additionally, due to the semirigid feature of the circuit 13, the circuit is easily held during the soldering of the terminating conductors 18- 18 with the associated terminals 12-12. Further, the semirigid natureof the printed circuit 13 permits the circuit to maintain a position which is relatively close to the underside of the row of terminals 12-12 to which it is assembled and secured, thereby precluding the drooping of the circuit onto the row of terminals immediately therebelow.
  • the outer films 27 and 28 are not necessary to accomplish the intended purpose of the inventive design of the circuit 13.
  • the films 27 and 28 are placed over the conductors in the manner previously described and as shown in FIGS. 2 and 3.
  • a double-sided circuit which comprises:
  • a substrate composed of a nonconductive material
  • the one conductive path being connected to each of the pair of conductive paths to connect the pair of conductive paths together;
  • each of the pair of conductive paths supported on the substrate being formed with a saddle having a depression contoured to receive at least portions of terminations of external circuits to facilitate interconnecting of the terminations, the contoured depression of the saddle being spaced from the connection of the one conductive path and the pair of conductive paths.
  • portions of the substrate which include at least portions of the pair of conductive paths are formed with a fold whereat the saddles of the pair of conductive paths are located so that the saddles are prominently positioned for assembly with external terminations.
  • a double-sided circuit which comprises:
  • a substrate composed of a nonconductive material which is at least semirigid
  • a second plurality of spaced, parallel conductors supported on the opposite side of the substrate; selected conductors of the first plurality on the one side of the substrate being connected to selected conductors of the second plurality on the opposite side of the substrate;
  • the second plurality of conductors being arranged on the substrate in a connecting relationship with the first plurality of conductors to interconnect selected conductors of the first plurality;
  • each of the first plurality of the conductors includes an opening formed in the displaced portion of each of the conductors on the fold of the substrate.
  • first plurality of conductors is divided into groups of conductors extending transversely of the substrate and the second plurality of conductors extend longitudinally of the substrate with each of the conductors of the second plurality being connected selectively to at least one conductor in each of the group of conductors to interconnect selected conductors of different groups.
  • An electrical device having circuit portions which comprises:
  • a double-sided circuit including:
  • the second plurality of conductors being arranged on the substrate in a connecting relationship with the first plurality of conductors to interconnect selected conductors of the first plurality,
  • At least portions of the substrate which support the first plurality of conductors thereon being formed with a at least one other selected terminal in another group through the interconnecting relationship of the first and second plurality of conductors.
  • the terminals which extend from the device being arranged in at least one row containing a plurality of groups of terminals; the first plurality of conductors being divided into groups of conductors extending transversely of the substrate and the second plurality of conductors extending longitudinally of the substrate with each of the conductors of the second plurality being connected selectively to at least one conductor in each of the groups of conductors, and selected terminals of each group in the row being connected to selected conductors of the first plurality of conductors to interconnect each selected terminal of one group with of conductors exclusive of the portions of the conductors which include the nests.
  • a double-sided circuit which comprises:
  • each of the pair of conductive paths supported on the substrate being formed with a saddle upon which at least portions of terminations of external circuits can rest to facilitate interconnecting of the terminations;
  • the substrate which include at least portions of the pair of conductive paths formed with a fold whereat the saddles of the pair of conductive paths are located so that the saddles are prominently positioned for assembly with external terminations;
  • each of the pair of conductive paths which form the saddle formed with an opening to provide the saddle on the fold of the substrate.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Metallurgy (AREA)
  • Combinations Of Printed Boards (AREA)
  • Multi-Conductor Connections (AREA)
  • Structure Of Telephone Exchanges (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
US95809A 1970-12-07 1970-12-07 Double-sided circuit having terminal-receiving portions Expired - Lifetime US3644661A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US9580970A 1970-12-07 1970-12-07

Publications (1)

Publication Number Publication Date
US3644661A true US3644661A (en) 1972-02-22

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Application Number Title Priority Date Filing Date
US95809A Expired - Lifetime US3644661A (en) 1970-12-07 1970-12-07 Double-sided circuit having terminal-receiving portions

Country Status (9)

Country Link
US (1) US3644661A (sv)
JP (1) JPS5348279Y2 (sv)
CA (1) CA941516A (sv)
DE (1) DE7146117U (sv)
ES (1) ES398010A1 (sv)
FR (1) FR2117443A5 (sv)
GB (1) GB1370140A (sv)
IT (1) IT962033B (sv)
SE (1) SE380962B (sv)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4514799A (en) * 1981-02-24 1985-04-30 Bell & Howell Company Bus system architecture and microprocessor system
US4567543A (en) * 1983-02-15 1986-01-28 Motorola, Inc. Double-sided flexible electronic circuit module
US4934045A (en) * 1988-02-05 1990-06-19 Semiconductor Energy Laboratory Co., Ltd. Method of producing electric circuit patterns
US5148355A (en) * 1988-12-24 1992-09-15 Technology Applications Company Limited Method for making printed circuits
US5323214A (en) * 1992-08-05 1994-06-21 Ricoh Company, Ltd. Image forming apparatus having an electrostatic actuator
US5573409A (en) * 1991-10-17 1996-11-12 Itt Corporation Interconnector
US20030173112A1 (en) * 2002-03-15 2003-09-18 Barnes Stephen Matthew Interconnect bus crossover for MEMS

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4514799A (en) * 1981-02-24 1985-04-30 Bell & Howell Company Bus system architecture and microprocessor system
US4567543A (en) * 1983-02-15 1986-01-28 Motorola, Inc. Double-sided flexible electronic circuit module
US5072519A (en) * 1988-02-03 1991-12-17 Semiconductor Energy Laboratory Co., Ltd. Method of producing electric circuit patterns
US4934045A (en) * 1988-02-05 1990-06-19 Semiconductor Energy Laboratory Co., Ltd. Method of producing electric circuit patterns
US5025555A (en) * 1988-02-05 1991-06-25 Semiconductor Energy Laboratory Co., Ltd. Method of producing electric circuit patterns
US5148355A (en) * 1988-12-24 1992-09-15 Technology Applications Company Limited Method for making printed circuits
US5573409A (en) * 1991-10-17 1996-11-12 Itt Corporation Interconnector
US5323214A (en) * 1992-08-05 1994-06-21 Ricoh Company, Ltd. Image forming apparatus having an electrostatic actuator
US20030173112A1 (en) * 2002-03-15 2003-09-18 Barnes Stephen Matthew Interconnect bus crossover for MEMS
US6727436B2 (en) * 2002-03-15 2004-04-27 Memx, Inc. Interconnect bus crossover for MEMS

Also Published As

Publication number Publication date
IT962033B (it) 1973-12-20
SE380962B (sv) 1975-11-17
ES398010A1 (es) 1974-07-01
DE7146117U (de) 1972-04-20
GB1370140A (en) 1974-10-09
CA941516A (en) 1974-02-05
JPS5348279Y2 (sv) 1978-11-18
FR2117443A5 (sv) 1972-07-21
JPS47649U (sv) 1972-08-04

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AS Assignment

Owner name: AT & T TECHNOLOGIES, INC.,

Free format text: CHANGE OF NAME;ASSIGNOR:WESTERN ELECTRIC COMPANY, INCORPORATED;REEL/FRAME:004251/0868

Effective date: 19831229