US3634807A - Detachable electrical contact arrangement - Google Patents

Detachable electrical contact arrangement Download PDF

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Publication number
US3634807A
US3634807A US21118A US3634807DA US3634807A US 3634807 A US3634807 A US 3634807A US 21118 A US21118 A US 21118A US 3634807D A US3634807D A US 3634807DA US 3634807 A US3634807 A US 3634807A
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US
United States
Prior art keywords
sheet
contact elements
contact
arrangement
connection
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
US21118A
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English (en)
Inventor
Friedrich Grobe
Artur Weitze
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens Corp
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 DE19691916160 external-priority patent/DE1916160C/de
Application filed by Siemens Corp filed Critical Siemens Corp
Application granted granted Critical
Publication of US3634807A publication Critical patent/US3634807A/en
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
    • H01R12/7082—Coupling device supported only by cooperation with PCB
    • 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
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/0001—Technical content checked by a classifier
    • H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00

Definitions

  • a detachable electrical contact arrangement for positioning between contact surfaces on units to form electrical connections therebetween characterized by a thin insulating sheet having contact elements disposed thereon in a predetermined pattern and the contact elements having a current path through the sheet which is not more than one millimeter in length.
  • the contact elements are either elastic hollow metal spheres or elastic wire balls mounted in openings in an insulating sheet,
  • the insulating sheet has a net configuration form of strips and the contact elements are metal deposits surrounding the strip or points of intersection of the strip.
  • a third embodiment is a thin flexible metal sheet sandwiched between a pair of insulating film or sheets which metal sheet has had portions removed to provide a plurality of contact elements interconnected by connecting strips.
  • the insulating film is provided with openings to expose the surface of the contact element and a portion of the film and connecting strips are subsequently removed to electrically isolate selected contact ele ments from adjacent contact elements.
  • the present invention is directed to a detachable electrical contact arrangement and a method for making the arrangement for providing electrical connections between contact surfaces on electrical units such as micro assemblies and wiring plates or boards.
  • detachable electrical contacts comprising contact elements positioned between contact surfaces are frequently employed in high-frequency technology such as spring bands for high frequency and tight sealing screen housings or hollow waveguide flange connection and for electrically contacting timing plungers for microwave lines. These types of contacts are only suitable for connections which have large surfaces.
  • Another typical type of contact arrangement has a rigid plate having S-shaped contact elements which establish connections between contact surfaces of two printed circuit boards.
  • An example of this type of arrangement is displayed in the printed German Pat. No. 1,275,170 published Aug. 14, 1968.
  • the present invention is directed to a detachable electrical contact arrangement which requires minimum space and which has a lower inductivity which is desirable in highfrequency applications and the method of making the arrangement.
  • the arrangement provides contact elements having a current path of a length not greater than 1 mm. carried on a flexible sheet of insulating elastomer material which maintains the spacing between the element while enabling flexing of the arrangement in a direction perpendicular to its plane.
  • Embodiments of the present invention include an arrangement having elastic contact elements which are either wire balls or hollow spheres mounted in an aperture of a flexible sheet of insulation material.
  • Another embodiment of the arrangement utilizes a netlike sheet of insulating material having openings with contact elements formed by the depositing of metal thereon.
  • a third embodiment of the invention utilizes sheetlike contact elements laminated to a sheet of insulation material with selected contact elements electrically insulated from adjacent contact elements which are electrically connected.
  • Another object of the present invention is to provide electrical contact arrangements and method making the arrangement which has a sheet of insulating material that is flexible to allow movement of the contact elements in a direction perpendicular to the plane of the sheet while being relatively un-' movable in the direction parallel to the plane of the sheet.
  • a still further object of the present invention is to provide an electrical contact arrangement and method of making the arrangement which has a plurality of contact elements which are electrically interconnected and selected contact elements that are electrically isolated therefrom for forming coaxial connections between units.
  • FIG. 1 is an isometric view with portions exploded for purposes of illustration of the present invention utilized for forming a connection between electrical units;
  • FIG. 2 is an enlarged side view of a portion of FIG. I illustrating the electrical connections formed by the present invention
  • FIG. 3 is a plan view of the present invention illustrated in FIG. 2;
  • FIG. 4a is a plan view of an embodiment of the detachable electrical contact arrangement of the present invention.
  • FIG. 4b is an end view of the arrangement illustrated in FIG.
  • FIG. 5 is four views identified as A, B, C and D of a sheet metal contact element of the present invention.
  • FIG. 6 is four views identified as A, B, C and D of another embodiment of the sheet metal contact element of the present invention.
  • FIG. 7 is a third embodiment of the arrangement of the present invention utilizing contacts such as those illustrated in FIGS. 5 and 6.
  • the microassembly l is provided with surface contacts 5 on a surface facing the wiring board 3 which is provided with surface contacts 6.
  • the detachable electrical contact arrangement 2 has contact elements 7 carried on a sheet 8 of insulating material and is disposed between the contact surfaces 5 and 6 to complete an electrical connection therebetween.
  • the contact elements 7 are arranged on the sheet or film 8 in rows and columns with uniform spacing of the elements in the rows and between the columns to provide the desired rectangular pattern with the desired distance such as 2.54 or 1.27 mm.
  • the film 8 has a thickness of approximately 0.0125 mm. and the contact elements 7 have a current path which is not greater than 1 mm. for connecting the contact surfaces 5 and the contact surfaces 6.
  • the contact elements 7 are hollow metal spheres which are elastically deformable under the contact pressure and are supported or mounted within apertures in the sheet or film 8. Instead of using hollow metal spheres, wire balls can be used on the contact elements 7 and mounted in the openings in the sheet or film 8.
  • the sheet 8 is flexible to allow adjustment of the contact elements 7 in a direction at right angles or perpendicular to the plane of the sheet to compensate for irregularities in the surface of the unit 1 or board 3 which have the contact surfaces 5 and 6, respectively.
  • the sheet 8 maintains the contact elements 7 substantially immovable in a direction parallel to the plane of the sheet 8 and maintains the contact elements in a substantially fixed spacing.
  • the sheet 8 has the characteristics of a diaphragm and enables flexing to compensate for forming a connection between a series of contact surfaces which are disposed on a nonplanar surface.
  • FIGS. 4a and b of the contact arrangement 2a utilizes the sheet 9 which has a net configuration having points of intersection between longitudinal and transverse extending strips which strips define mesh openings in the sheet.
  • Contact elements 10 are formed at the intersections of the transverse and longitudinal strips and can be formed at points on each strip intermediate of the points of intersection.
  • contact elements 10 are formed by depositing metal on the strips of the netlike carrier sheet 9 by a metallizing process such as soldering, welding or electrodepositing. The metal is deposited on both sides of the sheet 9 with the material on both sides being interconnected by the deposited metal of a contact element extending through the mesh openings of the film 9.
  • surfaces of the strips forming the netlike car rier sheet 9 can be metallized with a deposit or coating of metal extending between adjacent contact elements.
  • the contact elements 10a are located at points of intersection of the strips to form a frame with the contact element 10b disposed in the center of the frame.
  • all of the contact elements 10a can be electrically interconnected by metallizing selected strips of the sheet 9 while the contact elements 10b are electrically isolated therefrom.
  • Such an arrangement can be used in a coaxial connection with the contact element 10b forming a connection for the outer conductor and the contacts 10a, which form a module frame which can frame a rim length less than 2.54 mm. to form the connection for the outer casing or outer conductor.
  • FIG. 7 A third embodiment of the detachable electrical contact arrangement 2b is illustrated in FIG. 7.
  • the contact arrangement 2b comprises a metal film or sheet 14 having portions removed to provide a series of contacts 11 with the contacts lla interconnected in a quadratic arrangement.
  • Contact elements 1112 are connected into the quadratic arrangement of contacts by retaining strip 17 and positioned substantially in the center of the square formed by the frame having the contacts 11a at each corner.
  • the flexible metal sheet or plate has the thickness of approximately 0.03 mm. and is made of a flexible material such as beryllium bronze.
  • a film or sheet of insulating material 15 having a pattern of openings or apertures 16 arranged in a pattern and spacing identical to the contact elements 11a and Ilb is superimposed on the sheet 14 and laminated thereto.
  • a second sheet of insulating material 1511 is disposed on the opposite side of metal sheet 14 so that the metal sheet is laminated between a pair of insulating sheets.
  • the retaining strips 17 are removed to electrically isolate the contacts llb from the remaining contacts 110.
  • the removal can be performed by a punching process, by a burning process using a laser or electron beam, or a melting process using a current pulse.
  • the contact arrangement 2b can be used to make coaxial contact connections with the contact element 11b providing the connections for the inner conductor while the electrically interconnected contact elements lla provide the connection for the outer conductor.
  • the contacts 11a and 11b are diagonally slotted or provided with a star-shaped slot to form a plurality of segments 12 or 12a ina frame having a rim length of 1 mm.
  • the segments 12 are bent in opposite directions so that adjacent segments extend outwardly in opposite direction from the plane of the contact element 11 to ensure the formation of a good electrical connection when the contact arrangement 2b is inserted between the contact surfaces on the wiring board 3 and microunit 1.
  • lumps or projection 13 of metal instead of bending the segments 12 out of the plane of the contact 11, it is preferred to provide lumps or projection 13 of metal on the segments 12a.
  • the lumps or projections can be fonned by a metallizing process such as electrodepositing solder or welding.
  • the pro ections or lumps 13 are posrtloned so that adjacent lumps are extending in opposite directions from the plane of the contact 11.
  • Gold is the preferred material for forming the lumps or projections and preferably is the material used in forming the contact surfaces such as 5 and 6 on the electrical units.
  • the amount of set in the bent segment 12 of the contact element illustrated in FIG. 5 and the height of the projection 13 in the element of FIG. 6 should be sufficient so that the segments l2 and 12a are deflected when the arrangement 2b is forming an electrical connection.
  • the amount of deflection occurring during the fonning of the electrical connection should not plastically deform the segments 12 and 12a to cause a permanent set therein.
  • a contact pressure of ten ponds (Gram force) has been found sufficient to obtain a good electrical connection without plastically deforming the segment 12 and 121). While forming the connection, the frictional movement of the segment 12 or projection 13 of the contact elements on the contact surfaces provides a self-cleaning of the contact elements and contact surface which is beneficial to the fonnation of a good electrical connection.
  • a detachable electrical contact arrangement for disposing between units such as microassemblies and wiring plates each of which has electrical contacts on a surface facing the other unit for forming electrical connections therebetween particularly a multipole connection, said arrangement comprising a sheet of insulating material having electrical contact elements arranged thereon in a predetermined pattern, said contact elements being formed in a flexible plate secured to said sheet, said plate being provided with two or more slots to form segments with alternate segments projecting in opposite directions from the plane of the plate to provide a current path through said sheet of a length less than one millimeter, and said sheet having characteristics so that the contact elements are movable in a direction at right angles to the plane of the sheet to enable adjusting during formation of a connection and are substantially unmovable in a direction parallel to the plane of the sheet.
  • a detachable electrical contact arrangement according to claim 1, wherein the tip of each of the segments is provided with deposits of contact material extending in the direction of the contact surfaces.
  • a detachable electrical contact arrangement for disposing between units such as micro assemblies and wiring plates each of which has electrical contacts on a surface facing the other unit for forming electrical connections therebetween particularly a multipole connection, said arrangement comprising a sheet of insulating material having electrical contact elements arranged thereon in a predetermined pattern, said contact elements providing a current path through said sheet of a length less than one millimeter, one of said contact elements being a connector for an inner conductor of the coaxial connection and the adjacent contact elements surrounding said one element being interconnected electrically to provide a connection for the outer conductor of the coaxial connection, and said sheet having characteristics so that the contact elements are movable in a direction at right angles to the plane of the sheet to enable adjusting during formation of a connection and are substantially unmovable in a direction parallel to the plane of the sheet.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)
  • Multi-Conductor Connections (AREA)
  • Measuring Leads Or Probes (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
US21118A 1969-03-28 1970-03-19 Detachable electrical contact arrangement Expired - Lifetime US3634807A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691916160 DE1916160C (de) 1969-03-28 Losbare elektrische Kontakte zwischen Mikrobaugruppen und/oder Verdrahtungsplatten

Publications (1)

Publication Number Publication Date
US3634807A true US3634807A (en) 1972-01-11

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
US21118A Expired - Lifetime US3634807A (en) 1969-03-28 1970-03-19 Detachable electrical contact arrangement

Country Status (6)

Country Link
US (1) US3634807A (enrdf_load_stackoverflow)
BE (1) BE748115A (enrdf_load_stackoverflow)
FR (1) FR2035959A1 (enrdf_load_stackoverflow)
GB (1) GB1257418A (enrdf_load_stackoverflow)
LU (1) LU60609A1 (enrdf_load_stackoverflow)
NL (1) NL7003475A (enrdf_load_stackoverflow)

Cited By (82)

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US3862790A (en) * 1971-07-22 1975-01-28 Plessey Handel Investment Ag Electrical interconnectors and connector assemblies
US3868676A (en) * 1971-11-24 1975-02-25 Burroughs Corp Display panel electrode termination
US3881799A (en) * 1972-09-11 1975-05-06 George H Elliott Resilient multi-micro point metallic junction
US4774760A (en) * 1986-05-05 1988-10-04 International Business Machines Corporation Method of making a multipad solder preform
FR2643753A1 (fr) * 1989-02-28 1990-08-31 Commissariat Energie Atomique Procede d'interconnexion de composants electriques au moyen d'elements conducteurs, deformables et sensiblement spheriques
US4954878A (en) * 1989-06-29 1990-09-04 Digital Equipment Corp. Method of packaging and powering integrated circuit chips and the chip assembly formed thereby
US5105537A (en) * 1990-10-12 1992-04-21 International Business Machines Corporation Method for making a detachable electrical contact
US5118299A (en) * 1990-05-07 1992-06-02 International Business Machines Corporation Cone electrical contact
US5137461A (en) * 1988-06-21 1992-08-11 International Business Machines Corporation Separable electrical connection technology
US5163834A (en) * 1990-12-17 1992-11-17 International Business Machines Corporation High density connector
US5185073A (en) * 1988-06-21 1993-02-09 International Business Machines Corporation Method of fabricating nendritic materials
US5207585A (en) * 1990-10-31 1993-05-04 International Business Machines Corporation Thin interface pellicle for dense arrays of electrical interconnects
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US5949246A (en) * 1997-01-28 1999-09-07 International Business Machines Test head for applying signals in a burn-in test of an integrated circuit
US6027346A (en) * 1998-06-29 2000-02-22 Xandex, Inc. Membrane-supported contactor for semiconductor test
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US6194669B1 (en) * 1999-02-05 2001-02-27 Trw Inc. Solder ball grid array for connecting multiple millimeter wave assemblies
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Cited By (202)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3862790A (en) * 1971-07-22 1975-01-28 Plessey Handel Investment Ag Electrical interconnectors and connector assemblies
US3868676A (en) * 1971-11-24 1975-02-25 Burroughs Corp Display panel electrode termination
US3881799A (en) * 1972-09-11 1975-05-06 George H Elliott Resilient multi-micro point metallic junction
US4774760A (en) * 1986-05-05 1988-10-04 International Business Machines Corporation Method of making a multipad solder preform
US5137461A (en) * 1988-06-21 1992-08-11 International Business Machines Corporation Separable electrical connection technology
US5185073A (en) * 1988-06-21 1993-02-09 International Business Machines Corporation Method of fabricating nendritic materials
FR2643753A1 (fr) * 1989-02-28 1990-08-31 Commissariat Energie Atomique Procede d'interconnexion de composants electriques au moyen d'elements conducteurs, deformables et sensiblement spheriques
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Also Published As

Publication number Publication date
GB1257418A (enrdf_load_stackoverflow) 1971-12-15
DE1916160A1 (de) 1970-10-08
NL7003475A (enrdf_load_stackoverflow) 1970-09-30
BE748115A (fr) 1970-09-28
LU60609A1 (enrdf_load_stackoverflow) 1970-05-26
DE1916160B2 (de) 1972-11-02
FR2035959A1 (enrdf_load_stackoverflow) 1970-12-24

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