US3585566A - Modular secondary connector - Google Patents

Modular secondary connector Download PDF

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Publication number
US3585566A
US3585566A US860228A US3585566DA US3585566A US 3585566 A US3585566 A US 3585566A US 860228 A US860228 A US 860228A US 3585566D A US3585566D A US 3585566DA US 3585566 A US3585566 A US 3585566A
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US
United States
Prior art keywords
modules
module
adjacent
faces
cable
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
US860228A
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English (en)
Inventor
James A Sievert
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.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing 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 Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Application granted granted Critical
Publication of US3585566A publication Critical patent/US3585566A/en
Anticipated expiration legal-status Critical
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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
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/20—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping using a crimping sleeve
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/03—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the relationship between the connecting locations
    • H01R11/05—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the relationship between the connecting locations the connecting locations having different types of direct connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/50—Clamped connections, spring connections utilising a cam, wedge, cone or ball also combined with a screw
    • H01R4/5016—Clamped connections, spring connections utilising a cam, wedge, cone or ball also combined with a screw using a cone
    • H01R4/5025—Clamped connections, spring connections utilising a cam, wedge, cone or ball also combined with a screw using a cone combined with a threaded ferrule operating in a direction parallel to the conductor

Definitions

  • MODULAR SECONDARY CONNECTOR This invention relates to electrical connectors and in particular to preinsulated modular secondary connectors for underground residential distribution systems.
  • the present invention provides a modular connector'capable of accepting any desired number of tap connection modules within the current-carrying capacity of the system.
  • Each module is self-insulated and is easily and quickly introduced into the assembly without requiring preliminary removal of insulation.
  • the modules may be placed in any desired direction. Since modules are added only as required, no surplus taps are necessary.
  • FIG. 1 is a plan view, partly cut away to show interior detail, of a modular secondary connector having three taps,
  • FIG. 2 is a sectional view taken approximately at line 2-2 of FIG. 1, and
  • FIG. 3 is a sectional view taken approximately at line 3-3 of FIG. 1.
  • FIG. 1 The assembly of FIG. 1 will be seen to consist of three T- connection tap modules 11, 12, 13 held together with a bolt 14 and nut 15.
  • the three modules each have a different cable contact extension; but it will be apparent that any combination of such elements may equally well be used.
  • By selection of a bolt of suitable length it will also be apparent that any number of modules may be secured together.
  • the module comprises an annular body 16 having flat parallel end faces and a radial extension forming an elongate terminal 17, and covered with a rubbery insulating coating 18.
  • the rubbery coating extendsbeyond the flat end faces of the annular body 16 a distance sufficient to provide a water-impenetrable seal when two adjacent modules are drawn into metal-to-metal contact by the bolt 14 and nut 15.
  • Full conductive contact between modules may be achieved by face-to-face contact as shown between modules 12 and 13.
  • the simple structure there indicated provides maximum economy and is entirely adequate where a specified number of modules are to be permanently combined.
  • An alternative structure shown at the juncture of modules 11 and 12 in FIG. 1 and in lateral cross section in FIG. 3, cmploys a doubly tapered seize ring 19 fitting within correspondingly tapered annular channels 20, 21 in the opposing faces of the two modules. Once the modules are forced together, the ring 19 becomes permanently seized or welded to the annular bodies to form a permanent junction. The bolt 14 may then be withdrawn without separation of the modules, thereby facilitating the insertion of a longer boltand the addition of further modules as desired.
  • Terminal 17 is illustrated in FIGS. 1 and 2 as a simple crimp type tubular terminal for making permanent contact with a bar cable-end by mechanical crimping.
  • the insulation 18 in this case covers only the first portion of the terminal.
  • the terminal 17 of module 12 has a tapered socketlike open interior for accepting a tapered terminal plug, not shown.
  • a key 22 fitting within a hole in the sidewall is urged inwardly by the elastic covering 18' for retaining the suitably grooved plug.
  • the insulating covering 18 extends slightly beyond the open end of the terminal 17 and is constricted to provide'a tight seal over the connecting plug or cable.
  • the terminal 17" of module 13 consists of a half cylinder which mates with a corresponding half-cylinder terminal plug, not shown, being held in close contact therewith by a screw 23.
  • terminal and the cable are to be provided with further sealants, insulating and protective coverings, and the like at the area of contact, e.g. by wrapping with rubbery adherent strip material, or by covering with an elastic tube, or by other means.
  • the head 24 of the bolt 14 is pennanently covered with an insulating cap 25 bonded thereto and which, similarly to the coverings 18, extends slightly beyond the fiat forward face of the head and when placed under compression forrns'a tight seal with said covering.
  • the nut 15 is also covered with a tightly fitting insulating covering 26.
  • the covering 26 is supplied as a separate component which is snapped over the nut after the connector has been otherwise assembled.
  • An inner ridge 27 fits into a peripheral groove 28 in the nut for this purpose.
  • the annular ring 16 has an outer diameter of 1.25 inch (31.6 mm.) and an inner diameter of 0.65 inch (16.5 mm.), and is 1.80 inches (4.6 cm.) between the two end faces.
  • the terminal 17 extends a total of 3.50 inches (8.9 cm.) fromthe center of the ring and has an outer diameter of l inch (2.5 cm.).
  • the modules are mounted on a 95-inch 15.4 mm.) bolt. All metal parts are of aluminum.
  • the insulating covering has a minimum thickness of about oneeighth inch (4 mm.) and is a hard rubbery material, preferably of Nordel ethylene-propylene terpolymer, having a Shore A densometer value of about 60.
  • the polymer coating extends about 0.03 inch (0.75 mm.) past the contacting metal surface in each instance, and is lightly beveled at the edges so that full metal-to-metal contact may be attained.
  • a module for a modular secondary connector comprising an annular metal body having flat parallel end faces and a radial extension forming a cable-receiving terminal, and an elastomeric insulating coating over said body and at least the first portion of said extension and extending fractionally past the plane of each of said faces.
  • a modular assembly of a plurality of modules as defined in claim 1 including terminally insulated bolt and nut means holding said modules in tight face-to-face contact.
  • a modular assembly of a plurality of modules as defined in claim 2 including terminally insulated bolt and nut means holding said modules in tight face-to-face contact.
  • Method of connecting cables suitable for use in underground residential distribution systems comprising connecting each said cable to a connector module as defined in claim 1, insulatively protecting the connection, and assembling said modules together under compression sufficient to provide tight conductive contact between adjacent faces of said modules and to compress the adjacent fractional extensions of said insulating coatings to form a water-impenetrable seal.
  • Method of connecting cables suitable for use in un derground residential distribution systems comprising connecting each said cable to a connector module as defined in claim 2, insulatively protecting the connection, assembling said modules with an intervening seize ring between each two adjacent modules along a central support, and compressing modules and ring together under pressure sufficient to cause seizure of said rings in said modules and permanent Eoii ductive contact between said modules and to compress the adjacent fractional extensions of said insulating coatings to form a water-impenetrable seal.
US860228A 1969-09-23 1969-09-23 Modular secondary connector Expired - Lifetime US3585566A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US86022869A 1969-09-23 1969-09-23

Publications (1)

Publication Number Publication Date
US3585566A true US3585566A (en) 1971-06-15

Family

ID=25332761

Family Applications (1)

Application Number Title Priority Date Filing Date
US860228A Expired - Lifetime US3585566A (en) 1969-09-23 1969-09-23 Modular secondary connector

Country Status (7)

Country Link
US (1) US3585566A (de)
CH (1) CH526863A (de)
FR (1) FR2062463A5 (de)
GB (1) GB1259919A (de)
NO (1) NO128840B (de)
SE (1) SE362169B (de)
ZA (1) ZA706460B (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3701087A (en) * 1970-10-29 1972-10-24 Henri Gabriel Bernard Electric connector device
US3813635A (en) * 1970-10-13 1974-05-28 Itt Terminal connector
US3931456A (en) * 1974-05-15 1976-01-06 The United States Of America As Represented By The United States National Aeronautics And Space Administration Office Of General Counsel-Code Gp High voltage distributor
US4241975A (en) * 1979-03-22 1980-12-30 International Telephone And Telegraph Corporation Cast bus bar connector having hollow cross-sectional area
US4382651A (en) * 1980-07-18 1983-05-10 Homac Mfg. Company Transformer bar connector
US4529256A (en) * 1981-11-26 1985-07-16 C. A. Weidmuller Gmbh Electrical connector
WO2006108445A1 (en) * 2005-04-14 2006-10-19 Fci Electrique France Connecting device for electrically connecting at least three electrical conductors, and kit comprising such devices

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009046150A1 (de) * 2009-10-29 2011-05-05 Robert Bosch Gmbh Kontaktprüfungseinrichtung für Starter

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3813635A (en) * 1970-10-13 1974-05-28 Itt Terminal connector
US3701087A (en) * 1970-10-29 1972-10-24 Henri Gabriel Bernard Electric connector device
US3931456A (en) * 1974-05-15 1976-01-06 The United States Of America As Represented By The United States National Aeronautics And Space Administration Office Of General Counsel-Code Gp High voltage distributor
US4241975A (en) * 1979-03-22 1980-12-30 International Telephone And Telegraph Corporation Cast bus bar connector having hollow cross-sectional area
US4382651A (en) * 1980-07-18 1983-05-10 Homac Mfg. Company Transformer bar connector
US4529256A (en) * 1981-11-26 1985-07-16 C. A. Weidmuller Gmbh Electrical connector
WO2006108445A1 (en) * 2005-04-14 2006-10-19 Fci Electrique France Connecting device for electrically connecting at least three electrical conductors, and kit comprising such devices

Also Published As

Publication number Publication date
NO128840B (de) 1974-01-14
SE362169B (de) 1973-11-26
DE2047823A1 (de) 1971-04-22
CH526863A (de) 1972-08-15
GB1259919A (en) 1972-01-12
DE2047823B2 (de) 1972-08-24
FR2062463A5 (de) 1971-06-25
ZA706460B (en) 1971-05-27

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