US3774142A - Sleeve for grounding bushing-mounted contact to plate - Google Patents

Sleeve for grounding bushing-mounted contact to plate Download PDF

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Publication number
US3774142A
US3774142A US00252074A US3774142DA US3774142A US 3774142 A US3774142 A US 3774142A US 00252074 A US00252074 A US 00252074A US 3774142D A US3774142D A US 3774142DA US 3774142 A US3774142 A US 3774142A
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US
United States
Prior art keywords
sleeve
holes
plate
fingers
bushing
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
US00252074A
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English (en)
Inventor
F Siegler
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.)
Elco Corp
Original Assignee
Elco Corp
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Filing date
Publication date
Application filed by Elco Corp filed Critical Elco Corp
Application granted granted Critical
Publication of US3774142A publication Critical patent/US3774142A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H01R13/405—Securing in non-demountable manner, e.g. moulding, riveting
    • H01R13/41—Securing in non-demountable manner, e.g. moulding, riveting by frictional grip in grommet, panel or base

Definitions

  • ABSTRACT In an electrical interconnection assembly of the type which comprises a conductive plate having elongated contacts mounted in respective apertures thereof by means of respective'thermoplastic insulating bushings, a removable sleeve is provided for grounding any contact to said plate without damaging the plate, the bushing, or the contact.
  • the sleeve comprises a cylindrical member having a sharpened lead-in edge at a first end, a fluted body portion, and at the other end,
  • the present invention comprises aground sleeve which can be applied over any contact tail and between the insulating bushing and the sides of thehole in the plate in order to groundsuch contact to the plate"withoutdamaging the contact, the insulating bushing, or the plate, and which can be readily be removed, if desired.
  • cardedge connectors are commonly. interconnected is bymounting the cardedge connectors on a metal plate such that the tails or secendary mating portionsof the contacts of the cardedge connectors protrude from the lower surface of the plate.
  • the cardedge connectors themselves consist of insulated housings having'cylindrical hubson their lower surface,.which hubs are mounted in apertures of the metal plate by forcefit,with the contact tails being in turn mounted in the hubs, also by force fit, such that nector was removed and a metal bushing was substi-' tuted which served both to mount the contact in the plate and connect the contact electrically to the plate.
  • FIG. l is a partial bottom axonometeric view ofa plate having a cardedgeconnector mounted thereon
  • FIG. 2 is a sectional view taken along the line22 of FIG. 1.
  • FIG. 3 is anaxonometeric cutaway view of the ground sleeve according to the invention.
  • a connector 12 is mounted on plate 10 by means of insulating hubs, such as 20, which extend from the lower surface of connector 12 and are remined in respective apertures of plate 10 by force fit, with contact tails 18 being in turn held in the respective hubs, also by force fit.
  • the insulator of connector 12 is mounted on plate 10 by means of insulating hubs, such as 20, which extend from the lower surface of connector 12 and are remined in respective apertures of plate 10 by force fit, with contact tails 18 being in turn held in the respective hubs, also by force fit.
  • hubs 20 may be an integral part, is made of thermoplastic material, such as nylon or polycarbonate which, as is well known, is slightly compressible.
  • any contact tail 18 may be connected to plate 10 electrically in a reliable, economical, and simple manner by the use of the ground sleeve of FIG. 3.
  • the ground sleeve comprises a generally cylindrical member, one end of which has a sharpened or tapered lead-in end 26 (FIG. 3) and the other end of which has a reducing portion 28 which provides an internal shoulder 30 facing lead-in end 26 and an external shoulder 36.
  • Connected to reducing portion28 and extending from shoulder 36 are four integral fingers, such as 32, each of which has an arcuate cross section. The fingers extend from an end of reducing portion 28 of the sleeve toward an imaginary extension of a central axis (not shown) of the sleeve.
  • the outer surface of the portion of the sleeve between the reducing and lead-in portions is fluted as indicated at 34 to provide a plurality of edges to aid in making a low resistance connection with the walls of the aperture of plate 10.
  • the entire sleeve is preferably made of springy material, such as heat-treated beryllium copper.
  • springy material such as heat-treated beryllium copper.
  • the sleeve was about Veinch high, with its other dimensions scaled proportionately as indicated in FIG. 3.
  • the entire sleeve can be formed by machining and other well known metal-working techniques from an integral cylindrical blank.
  • an insulating sleeve according to the invention is fitted over a contact tail as indicated at 22 (FIG. 1).
  • the tail will spread gripping fingers 32 (FIG. 3), whereby these fingers will exert a strong gripping force against the four sides of tail 18.
  • gripping fingers 32 As many gripping fingers 32 as sides of tail 18 (four), these fingers will not engage or damage the corners of tails 18, thus advantageously leaving such corners sharp, as required for effective wire wrapping operations.
  • the sleeve With the aid of a simple, cylindrical installation tool (not shown) designed to engage the upwardly-facing shoulder 36 (FIG. 3) of the sleeve, the sleeve is forced downward until its sharp lead-in edge 26 fits between the edge of bushing 20 of card-edge connector 12 and the side of the aperature in the plate. With plate 10 and connector 12 well supported and using an arbor press or a hammer, the sleeve is pushed between the bushing 20 and the side of the hole until shoulder 30 of the sleeve meets the end of the bushing as indicated at 38 (FIG. 2). The sleeve is now fully installed.
  • the sleeve can easily be removed with the aid of a pliers having a knife-edge cylindrical grasping jaw.
  • thermoplastic hub 20 of connector 12 will spring back to its normal shape and still retain its contact firmly.
  • gripping fingers 32 can be spaced in a non-symmetrical fashion, rather than as indicated, in order to engage the sides of a non-square rectangular contact tail, if desired.
  • an electrical interconnection assembly of the type which comprises a perforated plate having conductive portions at least at the holes thereof, with electrically conductive elongated members mounted in said holes by means of compressible insulating bushings which are force-fit between said elongated members and the sides of said holes, the improvement comprising metal sleeve means for selectively connecting any of said members to said plate, said sleeve means, comprising a cylindrical conductive member having a central longitudinal axis, having one end tapered to sharp lead-in edge means for fitting between said bushing and the side of said hole, and finger means at the other end of said conductive member for gripping said member when said sleeve means is inserted thereover, said finger which coverage towards said central axis means including a plurality of resilient fingers.
  • an electrical interconnection assembly of the type which comprises a perforated plate having conductive portions at least at the holes thereof, with electrically conductive elongated members mounted in said holes by means of compressible insulating bushings which are force-fit between said elongated members and the sides of said holes, the improvement comprising a sleeve for selectively connnecting any member to said plate, said sleeve comprising a cylindrical conductive member, one end of which is tapered to a sharp lead-in edge which is dimensioned to fit between said bushing and the side of said hole, the other end of which comprises a plurality of fingers dimensioned to grip said member when said sleeve is inserted thereover, said sleeve having a body which is straight along any longitudinal path thereon, and a cylindrical cross section, said outer surface being fluted to aid in making a good electrical connection with the sides of said hole.
  • an electrical interconnection assembly of the type which comprises a perforated plate having conductive portions at least at the holes thereof, with electrically conductive elongated members mounted in said holes by means of compressible insulating bushings which are force-fit between said elongated members and the sides of said holes, the improvement comprising a sleeve for selectively connecting any member to said plate, said sleeve comprising a cylindrical conductive member, one end of which is tapered to a sharp lead-in edge which is dimensioned to fit between said bushing and the side of said hole, the other end of which comprises a plurality of fingers dimensioned to grip said member when said sleeve is inserted thereover, said sleeve including a shoulder surface on the inside of said sleeve adjacent said other end thereof and facing said one end thereof for limiting travel of 1 said sleeve when it meets said bushing after said sleeve is inserted between said bushing and said side of said hole.
  • an electrical interconnection assembly of the type which comprises a perforated plate having conductive portions at least at the holes thereof, with electrically conductive elongated members mounted in said holes by means of compressible insulating bushings which are force-fit between said elongated members and the sides of said holes, the improvement comprising a sleeve for selectively connecting any member to said plate, said sleeve comprising a cylindrical conductive member, one end of which is tapered to a sharp lead-in edge which is dimensioned to fit between said bushing and the side of said hole, the other end of which comprises a plurality of fingers dimensioned to grip said member when said sleeve is inserted thereover, said fingers extend outward from the end of said sleeve toward an imaginary center axial extension of said sleeve.
  • an electrical interconnection assembly of the type which comprises a perforated plate having conductive portions at least at the holes thereof, with electrically conductive elongated members mounted in said holes by means of compressible insulating bushings which are force-fit between said elongated members and the sides of said holes, the improvement comprising a sleeve for selectively connecting any member to said plate, said sleeve comprising a cylindrical conductive member, one end of which is tapered to a sharp lead-in edge which is dimensioned to fit between said bushing and the side of said hole, the other end of which comprises a plurality of fingers dimensioned to grip said member when said sleeve is inserted thereover, said sleeve having a body portion between said two ends thereof which has a cylindrical cross section of uniform diameter, a reducing portion adjoining the end of said body portion remote from said one end of said sleeve which narrows the diameter of said sleeve, said fingers adjoining a surface of said reducing portion adjacent the
  • said reducing portion has an inner surface which forms a shoulder facing said one end of said sleeve, thereby to limit travel of said sleeve when said shoulder meets said bushing after said sleeve is inserted between said bushing and the side of said hole.
  • the sleeve is claim 5 wherein said fingers extend outwardly from the end of said sleeve toward an imaginary central axial extension of said. sleeve.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Insulating Bodies (AREA)
  • Insertion, Bundling And Securing Of Wires For Electric Apparatuses (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
US00252074A 1972-05-10 1972-05-10 Sleeve for grounding bushing-mounted contact to plate Expired - Lifetime US3774142A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US25207472A 1972-05-10 1972-05-10

Publications (1)

Publication Number Publication Date
US3774142A true US3774142A (en) 1973-11-20

Family

ID=22954483

Family Applications (1)

Application Number Title Priority Date Filing Date
US00252074A Expired - Lifetime US3774142A (en) 1972-05-10 1972-05-10 Sleeve for grounding bushing-mounted contact to plate

Country Status (11)

Country Link
US (1) US3774142A (xx)
JP (1) JPS5520638B2 (xx)
BE (1) BE799300A (xx)
CA (1) CA977432A (xx)
DE (1) DE2323739A1 (xx)
DK (1) DK138380B (xx)
FR (1) FR2184011B1 (xx)
GB (1) GB1385664A (xx)
IL (1) IL42070A (xx)
IT (1) IT986298B (xx)
NL (1) NL7306156A (xx)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3907400A (en) * 1973-11-21 1975-09-23 Du Pont Contact post
US3964813A (en) * 1975-02-10 1976-06-22 The United States Of America As Represented By The United States National Aeronautics And Space Administration Connector
US4005524A (en) * 1974-07-26 1977-02-01 Chromalloy-Alcon, Inc. Method of making an antenna connector
US4109295A (en) * 1977-08-01 1978-08-22 Ncr Corporation Solderless circuit board component
US4169649A (en) * 1976-12-16 1979-10-02 Vero Electronics Limited Connectors for use in frames for holding circuit cards
US4684200A (en) * 1985-11-12 1987-08-04 Amp Incorporated Press fit cable termination for printed circuit boards
US4718854A (en) * 1986-12-18 1988-01-12 Amp Incorporated Low profile press fit connector
FR2611240A1 (fr) * 1987-02-20 1988-08-26 Alpes Fses Manufacture Manchon tubulaire de fixation d'un appareil a un panneau de tole
FR2696878A1 (fr) * 1992-10-13 1994-04-15 Souriau & Cie Attache amovible pour solidariser un support plat à un élément et connecteur la comportant.
NL1009530C2 (nl) * 1998-06-30 2000-01-04 Framatome Connectors Belgium Connector.
NL1009531C2 (nl) * 1998-06-30 2000-01-04 Framatome Connectors Belgium Connector en werkwijze voor het vervaardigen van een connector.
NL1009529C2 (nl) * 1998-06-30 2000-01-04 Framatome Connectors Belgium Connector.
RU208939U1 (ru) * 2020-03-11 2022-01-24 Алевтина Александровна Лутова Механический узел

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19844829A1 (de) * 1998-09-30 2000-04-20 Itt Mfg Enterprises Inc Elektrischer Steckverbinder und Erdungselement

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1204625A (en) * 1915-04-30 1916-11-14 New Process Specialty Company Bushing for electric tubular insulation.
US1832940A (en) * 1929-12-27 1931-11-24 Ohio Brass Co Splicer
US3214200A (en) * 1963-09-05 1965-10-26 Varian Associates Tube coupling having deforming means
US3231843A (en) * 1961-08-03 1966-01-25 Burndy Corp Grounding connector
US3337833A (en) * 1964-09-04 1967-08-22 Elco Corp Modular electrical ground bushing
US3553628A (en) * 1968-09-13 1971-01-05 Thomas & Betts Corp Connector system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1204625A (en) * 1915-04-30 1916-11-14 New Process Specialty Company Bushing for electric tubular insulation.
US1832940A (en) * 1929-12-27 1931-11-24 Ohio Brass Co Splicer
US3231843A (en) * 1961-08-03 1966-01-25 Burndy Corp Grounding connector
US3214200A (en) * 1963-09-05 1965-10-26 Varian Associates Tube coupling having deforming means
US3337833A (en) * 1964-09-04 1967-08-22 Elco Corp Modular electrical ground bushing
US3553628A (en) * 1968-09-13 1971-01-05 Thomas & Betts Corp Connector system

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3907400A (en) * 1973-11-21 1975-09-23 Du Pont Contact post
US4005524A (en) * 1974-07-26 1977-02-01 Chromalloy-Alcon, Inc. Method of making an antenna connector
US3964813A (en) * 1975-02-10 1976-06-22 The United States Of America As Represented By The United States National Aeronautics And Space Administration Connector
US4169649A (en) * 1976-12-16 1979-10-02 Vero Electronics Limited Connectors for use in frames for holding circuit cards
US4109295A (en) * 1977-08-01 1978-08-22 Ncr Corporation Solderless circuit board component
US4684200A (en) * 1985-11-12 1987-08-04 Amp Incorporated Press fit cable termination for printed circuit boards
US4718854A (en) * 1986-12-18 1988-01-12 Amp Incorporated Low profile press fit connector
FR2611240A1 (fr) * 1987-02-20 1988-08-26 Alpes Fses Manufacture Manchon tubulaire de fixation d'un appareil a un panneau de tole
US5441423A (en) * 1992-10-13 1995-08-15 Framatome Connectors France Removable attachment to integrally join a flat support to an element
EP0593336A1 (fr) * 1992-10-13 1994-04-20 FRAMATOME CONNECTORS FRANCE Société anonyme Attache amovible pour solidariser un support plat à un élément et connecteur la comportant
FR2696878A1 (fr) * 1992-10-13 1994-04-15 Souriau & Cie Attache amovible pour solidariser un support plat à un élément et connecteur la comportant.
NL1009530C2 (nl) * 1998-06-30 2000-01-04 Framatome Connectors Belgium Connector.
NL1009531C2 (nl) * 1998-06-30 2000-01-04 Framatome Connectors Belgium Connector en werkwijze voor het vervaardigen van een connector.
NL1009529C2 (nl) * 1998-06-30 2000-01-04 Framatome Connectors Belgium Connector.
EP0969566A1 (en) * 1998-06-30 2000-01-05 Framatome Connectors International Connector and method for manufacturing a connector
EP0969565A1 (en) * 1998-06-30 2000-01-05 Framatome Connectors International Connector
EP0969567A1 (en) * 1998-06-30 2000-01-05 Framatome Connectors International Connector
US6123584A (en) * 1998-06-30 2000-09-26 Framatome Connectors Int'l Connector
US6159048A (en) * 1998-06-30 2000-12-12 Framatome Connectors International Connector for high frequency signals
US6375507B1 (en) 1998-06-30 2002-04-23 Framatome Connectors International Connector and method for manufacturing a connector
RU208939U1 (ru) * 2020-03-11 2022-01-24 Алевтина Александровна Лутова Механический узел

Also Published As

Publication number Publication date
IL42070A (en) 1976-02-29
IL42070A0 (en) 1973-06-29
FR2184011A1 (xx) 1973-12-21
DE2323739A1 (de) 1973-11-29
CA977432A (en) 1975-11-04
AU5474773A (en) 1974-10-24
BE799300A (fr) 1973-08-31
FR2184011B1 (xx) 1977-02-11
DK138380C (xx) 1979-02-12
GB1385664A (en) 1975-02-26
IT986298B (it) 1975-01-20
JPS4954882A (xx) 1974-05-28
DK138380B (da) 1978-08-21
JPS5520638B2 (xx) 1980-06-04
NL7306156A (xx) 1973-11-13

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