US3041575A - Connecting means - Google Patents

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US3041575A
US3041575A US53313A US5331360A US3041575A US 3041575 A US3041575 A US 3041575A US 53313 A US53313 A US 53313A US 5331360 A US5331360 A US 5331360A US 3041575 A US3041575 A US 3041575A
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connector
cables
strips
conductors
housing
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US53313A
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Wilhelm A Schneider
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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
    • H01R4/28—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
    • 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
    • H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
    • H01R4/2404—Connections using contact members penetrating or cutting insulation or cable strands the contact members having teeth, prongs, pins or needles penetrating the insulation
    • H01R4/2412—Connections using contact members penetrating or cutting insulation or cable strands the contact members having teeth, prongs, pins or needles penetrating the insulation actuated by insulated cams or wedges

Definitions

  • This invention relates to insulation piercing wire connectors of the type used for joining the ends of electric conductors to provide a continuous circuit through the conductors. More particularly the invention relates to a novel pre-assembled water-tight tubular connector into the bores of which insulated conductors are inserted and wherein the connection may be manually installed without the use of any tools.
  • a sealed cable connector is adapted for application to ends of insulated cables which can be made by hand .and without preparation of the cables.
  • An object of this invention is to provide an improved pre-assembled electrical connector that may be put in use in a fraction of a minute.
  • a further object is to provide an electrical connector which may be applied to insulated cables without the use of any tools.
  • a further object is to provide an electrical connector which can be quickly applied without removal or stripping of the insulation covering of the connected portions of the insulated wires.
  • a further object is to provide an electrical connector in which all parts are assembled with the clamping memher in open position and the'parts are retained in assembled relation ready for use.
  • FIG. 1 is a perspective view, partly cut away, of a connector, embodying principles of this invention, applied as a coupling for a two-conductor cable;
  • FIG. 2 is a view in section and partly in elevation of the tubular connector and associated connectors of FIG. 1 before being clamped into its final position;
  • FIG. 3 is a view in section and partly in elevation of the connector of FIG. 1 shown in operative engagement coupled on to a two-conductor cable;
  • FIG. 4 is a cross-section of FIG, 3 taken on line 4-4.
  • Connector 10 is formed of a cylindrical metal tubular housing 14 having at each end thereof threaded shanks on which threaded caps 16 and 16' are screwed.
  • Strips 22 and 22' extend radially outward from their secured portions to humps 24 and 24', and then taper toward each other from the humps to their extremeties, as shown in FIGS. 2 and 3.
  • Strips 22 and 22 are provided on their under or inner sides with radially inward projecting spaced pointed prongs 26. In the specific embodiment, described herein, four such prongs 26 are indicated-on each strip, but it is understood any appropriate number of prongs may be employed.
  • Corresponding prongs 26 on respective strips 22 and 22' are in opposition and are of such nature that they are capable of penetrating the insulation on cables 12 and 12' as hereinafter described.
  • Pistons 28 and 28 are normally spaced from each side of disc 18 and are each provided with a hollowed out center portion in the shape of truncated cones 30 and 30 whose respective narrow portions form channels 32 and 32 for passage of cables 12 and 12'.
  • the surface of hollowed cones 30 and 30, adjacent their wider portion thereof, abuts the respective inward'tapering surfaces of strips 22 and 22'.
  • the means for providing axial movement of pistons 28 and 23' includes slidable metal sleeves 34 and 34' positioned in opposite ends of connector 10 and in contact with the respective pistons.
  • the dimensions of sleeves 34 and 34 are such that a light press fit is provided between their outside diameter .and the inner surface of housing 14.
  • Sleeves 34 and 34' have inwardly diverging end portions 36 and 36', respectively, each of which has an axial opening 38 and 38' through which respective cables 12 and 12' may be inserted.
  • Each set of deformable insulating material 40 and 40' is provided within respective sleeves 34 and 34', and have their exposed ends in abutment with respective pistons 28 and 28.
  • Each set of insulating material 40 and 40" has .a respective axial bore 42 and 42' slightly larger than the overall outer peripheries of cables 12 and 12'.
  • Threaded caps 16 and 16 are provided with respective axial entrances 44 and 44' which engage, respectively, the external sections of the conical end portions 36 and 36 of sleeves 34 and 34.
  • each end of connector 10 there is thus provided an axially aligned continuous passage, in alignment with respective cavities 20 and 20, permitting cables 12 and 12 to be oppositely disposed therein in approximate end-to-end relation.
  • the end of insulated cable 12 is passed through entrance 44, opening 38, bore 42, channel 32 and between strips 22 and 22' into cavity 26.
  • the end of insulated cable 12' is inserted through entrance 44', opening 38', bore 42', channel 32' and between strips 22 and 22 into cavity 20'.
  • Cables 12 and 12 are of the conventional oval crosssectional type having a groove 50' in the insulation on one side of each cable. As shown in FIG. 1, one side respective strips 22 and 22'.
  • each of the bores 42 and 42' is provided with a guide knob 52 which interfits with groove 50, so that cables 12 and 12' can only be inserted in one position into the bores. In this way, conductors 46 and 48 will only be joined to conductors 46 and 48 through strips 22 and 22'.
  • connector receives the cable ends to be spliced, without any preparation of the cables. All splices are made without removing any insulation.
  • cables 12 and 12' are inserted through the entrances 44 and 44', far enough into connector 10', to abut respective cavities and 20. By positioning the cables along the entire length of the passages in connector 10 each cable can be gripped by both sets of prongs 26 on each side of strips 22 and 22'. After cables 12 and 12 are in place caps 16 and 16' may be simultaneously tightened, or'they may be alternately rotated to bring the caps axially toward each other, best shown in FIG. 3.
  • time consumed in making a splice between two-conductor cables has been as little as 10 seconds.
  • a pre-assembled connector for electrically coupling the ends of a pair of insulated conductors to provide electrically conductive joints between said conductors comprising an elongated hollow housing having aligned end openings, a disc of rigid insulatingmaterial positioned within said housing in the intermediate portion thereof, said disc having opposing cavities therein aligned with said end openings for receiving the ends of said conductors, a pair of diametrically opposing resilient metallic strips mounted insaid disc such that their extremities extend therethrough on opposite sides of said disc, said strips being longitudinally aligned within said housing and provided with radially inward projecting prongs thereon, axially slidable pistons ofrigid insulating material positioned within said housing and spaced from each side of said disc, each of said pistons provided with a hollowed out central conical portion whose respective wider portions are in opposing relation, said strips being in slidable engagement with the conical surfaces of said pistons, and independently operable adjustable means connected at each end of said housing adapted to move
  • said means comprise a cap on each end of said housing threaded internally for threaded engagement with said housing which is provided with external threads at each end thereof, said caps having aligned axial openings for the passage of said conductors therethrough, slidable metal sleeves disposed within said housing having inward diverging conical end portions adjacent said caps, two bodies of insulating material having axial bores therethrough respectively positioned within said sleeves and contiguous with said respective pistons, whereby when said caps are tightened they engage said sleeves which in turn force said pistons axially toward each other.

Description

June 26, 1962 w. A. SCHNEIDER CONNECTING MEANS Filed Aug. :51, 1960 FIG. 2
INVENTOR, WILHELM A. SCHNEIDER BY y ATTORNEY.
United States Patent O 3,041,575 CONNECTING MEANS Wilhelm A. Schneider, Fair Haven, N.J., assignor to the United States of America as represented by the Secretary of the Army Filed Aug. 31, 1960, Ser. No. 53,313
3 Claims. (Cl. 33999) (Granted under Title 35, US. Code (1952), sec. 266) The invention described herein may be manufactured and used by or for the Government for governmental purposes, without the payment of any royalty thereon.
This invention relates to insulation piercing wire connectors of the type used for joining the ends of electric conductors to provide a continuous circuit through the conductors. More particularly the invention relates to a novel pre-assembled water-tight tubular connector into the bores of which insulated conductors are inserted and wherein the connection may be manually installed without the use of any tools.
In military field operation, it is vital to repair any damage to electrical circuits immediately to preclude further damage or injury in the electrical equipment or elsewhere. In addition to the need for haste there are often adverse environmental conditions under which the repairs have to be made. Furthermore, any connection made should provide a reliable electrical continuity and good mechanical pull out strength. To meet as closely as possible all these requirements, a sealed cable connector according to this invention, is adapted for application to ends of insulated cables which can be made by hand .and without preparation of the cables.
An object of this invention is to provide an improved pre-assembled electrical connector that may be put in use in a fraction of a minute.
A further object is to provide an electrical connector which may be applied to insulated cables without the use of any tools.
A further object is to provide an electrical connector which can be quickly applied without removal or stripping of the insulation covering of the connected portions of the insulated wires.
A further object is to provide an electrical connector in which all parts are assembled with the clamping memher in open position and the'parts are retained in assembled relation ready for use.
For a more detailed description of the invention, together with other and further objects thereof, reference is had to the following description taken in connection with the accompanying drawing, wherein;
FIG. 1 is a perspective view, partly cut away, of a connector, embodying principles of this invention, applied as a coupling for a two-conductor cable;
FIG. 2 is a view in section and partly in elevation of the tubular connector and associated connectors of FIG. 1 before being clamped into its final position;
FIG. 3 is a view in section and partly in elevation of the connector of FIG. 1 shown in operative engagement coupled on to a two-conductor cable; and
FIG. 4 is a cross-section of FIG, 3 taken on line 4-4.
In the drawing and referring first to the complete assembly of connector and conductors in FIG. 1, there is disclosed a connector in clamped engagement with the insulated two-conductor cables 12 and 12' to be connected thereby. Connector 10 is formed of a cylindrical metal tubular housing 14 having at each end thereof threaded shanks on which threaded caps 16 and 16' are screwed.
A disc 18, positioned transverse to housing 14, having opposing central cavities 2.0 and 28*, is permanently mounted within housing 14, near its midpoint. Cavities 20 and 20' are in alignment and lie close to the axis of Patented June 26, 1962 housing 14. Extending through disc 18, in a region close to the peripheral edge of cavities 20 and 20, is a narrow longitudinal resilient metal strip 22 secured at its midpoint in any desired manner, as by molding or by a preformed slot in disc 18. An identical strip 22' is spaced diametrically opposite strip 22 and is secured to disc 18 in the same manner as the latter. Elongated strips 22 and 22 are provided with humped portions 24 midway between their extremities and their secured middle portions. Strips 22 and 22' extend radially outward from their secured portions to humps 24 and 24', and then taper toward each other from the humps to their extremeties, as shown in FIGS. 2 and 3. Strips 22 and 22 are provided on their under or inner sides with radially inward projecting spaced pointed prongs 26. In the specific embodiment, described herein, four such prongs 26 are indicated-on each strip, but it is understood any appropriate number of prongs may be employed. Corresponding prongs 26 on respective strips 22 and 22' are in opposition and are of such nature that they are capable of penetrating the insulation on cables 12 and 12' as hereinafter described.
A pair of identical tubular pistons 28 and 28', made of rigid insulating material, are slidably positioned within housing 14 such that their outer diameters are substantially the same as the inner diameter of the housing. Pistons 28 and 28 are normally spaced from each side of disc 18 and are each provided with a hollowed out center portion in the shape of truncated cones 30 and 30 whose respective narrow portions form channels 32 and 32 for passage of cables 12 and 12'. The surface of hollowed cones 30 and 30, adjacent their wider portion thereof, abuts the respective inward'tapering surfaces of strips 22 and 22'. By such an arrangement, when the pistons 28 and 28' are axially moved toward each other, the resilient strips are forced radially inward.
The means for providing axial movement of pistons 28 and 23' includes slidable metal sleeves 34 and 34' positioned in opposite ends of connector 10 and in contact with the respective pistons. The dimensions of sleeves 34 and 34 are such that a light press fit is provided between their outside diameter .and the inner surface of housing 14. Sleeves 34 and 34' have inwardly diverging end portions 36 and 36', respectively, each of which has an axial opening 38 and 38' through which respective cables 12 and 12' may be inserted.
Two respective sets of deformable insulating material 40 and 40' are provided within respective sleeves 34 and 34', and have their exposed ends in abutment with respective pistons 28 and 28. Each set of insulating material 40 and 40" has .a respective axial bore 42 and 42' slightly larger than the overall outer peripheries of cables 12 and 12'.
Threaded caps 16 and 16 are provided with respective axial entrances 44 and 44' which engage, respectively, the external sections of the conical end portions 36 and 36 of sleeves 34 and 34.
Through each end of connector 10, there is thus provided an axially aligned continuous passage, in alignment with respective cavities 20 and 20, permitting cables 12 and 12 to be oppositely disposed therein in approximate end-to-end relation. Assuming that connector 10 is to be used to join the two conductors 46 and 48 to their corresponding conductors 46 and 48', the end of insulated cable 12 is passed through entrance 44, opening 38, bore 42, channel 32 and between strips 22 and 22' into cavity 26. Likewise, the end of insulated cable 12' is inserted through entrance 44', opening 38', bore 42', channel 32' and between strips 22 and 22 into cavity 20'.
Cables 12 and 12 .are of the conventional oval crosssectional type having a groove 50' in the insulation on one side of each cable. As shown in FIG. 1, one side respective strips 22 and 22'.
3 of each of the bores 42 and 42' is provided with a guide knob 52 which interfits with groove 50, so that cables 12 and 12' can only be inserted in one position into the bores. In this way, conductors 46 and 48 will only be joined to conductors 46 and 48 through strips 22 and 22'.
In use, connector receives the cable ends to be spliced, without any preparation of the cables. All splices are made without removing any insulation. As indicated in FIG. 2, cables 12 and 12' are inserted through the entrances 44 and 44', far enough into connector 10', to abut respective cavities and 20. By positioning the cables along the entire length of the passages in connector 10 each cable can be gripped by both sets of prongs 26 on each side of strips 22 and 22'. After cables 12 and 12 are in place caps 16 and 16' may be simultaneously tightened, or'they may be alternately rotated to bring the caps axially toward each other, best shown in FIG. 3. This action urges sleeves 34 and 34 and insulation material 40 and 40' against pistons 28 and 28' whose sloping conical surfaces 30 and 30 wedge against the As this pressure is applied, strips 22 and 22' are forced radially toward each other, and prongs 26 cut through the insulation on the conductors, firmly gripping said conductors in operative position, as shown in FIGS. 3 and 4, insuring good electrical contact while increasing the mechanical strength of the splice. At the same time, deformable material and 40* are compressed around cables 12 and 12' at openings 38 and 38 in such manner to provide water-tight seals, around the cables, at the ends of connector 10, as shown in FIG, 3.
By using the connector, according to this invention, time consumed in making a splice between two-conductor cables has been as little as 10 seconds.
While there has been described what is at present a preferred embodiment of the invention, it will be obvious to those skilled in the art that various changes and modifications may be made therein without departing from the invention, and it is therefore aimed in the appended claims to cover all such changes and modifications as fall within the true spirit and scope of the invention.
What is claimed is:
1. A pre-assembled connector for electrically coupling the ends of a pair of insulated conductors to provide electrically conductive joints between said conductors comprising an elongated hollow housing having aligned end openings, a disc of rigid insulatingmaterial positioned within said housing in the intermediate portion thereof, said disc having opposing cavities therein aligned with said end openings for receiving the ends of said conductors, a pair of diametrically opposing resilient metallic strips mounted insaid disc such that their extremities extend therethrough on opposite sides of said disc, said strips being longitudinally aligned within said housing and provided with radially inward projecting prongs thereon, axially slidable pistons ofrigid insulating material positioned within said housing and spaced from each side of said disc, each of said pistons provided with a hollowed out central conical portion whose respective wider portions are in opposing relation, said strips being in slidable engagement with the conical surfaces of said pistons, and independently operable adjustable means connected at each end of said housing adapted to move said pistons axially toward each other whereby said strips are forced radially inward so that said prongs come into engagement with said conductors.
2. The device of claim 1 wherein said means comprise a cap on each end of said housing threaded internally for threaded engagement with said housing which is provided with external threads at each end thereof, said caps having aligned axial openings for the passage of said conductors therethrough, slidable metal sleeves disposed within said housing having inward diverging conical end portions adjacent said caps, two bodies of insulating material having axial bores therethrough respectively positioned within said sleeves and contiguous with said respective pistons, whereby when said caps are tightened they engage said sleeves which in turn force said pistons axially toward each other.
3. The device of claim 2 wherein said bodies of insulating material are deformable.
References Cited in the file of this patent UNITED STATES PATENTS 1,898,359 Gilbert Feb. 21, 1933 2,470,423 Alford May 17, 1949 2,720,635 Odegaard Oct. 11, 1955 2,725,545 Gordon Nov. 29, 1955 FOREIGN PATENTS 770,307 Great Britain Mar. 20, 1957
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Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3141720A (en) * 1961-09-22 1964-07-21 James G Johnson Connector for printed or etched flat conductor cables
US3166373A (en) * 1962-03-06 1965-01-19 Arthur A Berndt Composite strand connectors
US3546660A (en) * 1968-02-10 1970-12-08 Ver Draht & Kabelwerke Ag Electrical connector with insulation piercing means
US3766514A (en) * 1971-11-26 1973-10-16 H Kimm Electric wire connecting device
US3810078A (en) * 1973-02-08 1974-05-07 J Chordas Compression splice for electrically coupling electrical conductors
US3824529A (en) * 1972-11-28 1974-07-16 Bunker Ramo Flat cable connector
US3842191A (en) * 1973-12-17 1974-10-15 Nat Telephone Supply Co Insulated wire splice
US3907395A (en) * 1974-07-26 1975-09-23 Nexus Inc Electrical plug and jack assembly
US4153327A (en) * 1978-05-05 1979-05-08 Northern Telecom Limited Connector for telephone cords
US4451104A (en) * 1982-05-27 1984-05-29 At&T Technologies, Inc. Apparatus for splicing electric wires
US4588252A (en) * 1980-12-31 1986-05-13 Ice Roger L Electrode extension holders
EP0209452A1 (en) * 1985-07-17 1987-01-21 Goro S.A. Multiple-purpose connector for connecting different cable types of electrical conductors together
US4752252A (en) * 1986-09-29 1988-06-21 Amp Incorporated Axial grip connector having eccentric jaws
WO1989008337A1 (en) * 1988-02-23 1989-09-08 Raychem Pontoise S.A. Cable connecting module
US5502280A (en) * 1993-07-30 1996-03-26 Etcon Corporation Cable splice protector
US5760332A (en) * 1993-07-30 1998-06-02 Etcon Corporation Cable splice protector
US6069320A (en) * 1993-07-30 2000-05-30 Etcon Corporation Cable splice protector
US20070000304A1 (en) * 2005-06-07 2007-01-04 Bernhard Wild Sensor unit having a connection cable
US10962089B2 (en) * 2015-03-17 2021-03-30 Siemens Aktiengesellschaft Clamping device for a cable

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1898359A (en) * 1930-03-11 1933-02-21 Gilbert & Hertz Inc Safety plug
US2470423A (en) * 1945-12-29 1949-05-17 William H Alford Electrical splicer
US2720635A (en) * 1954-12-13 1955-10-11 Odegaard John Electrical outlet having insulation piercing means for contacting the conductor of an electric cord
US2725545A (en) * 1953-12-28 1955-11-29 Gordon Harry Electrical connector having insulation penetrating means contactiong the conductors
GB770307A (en) * 1955-04-29 1957-03-20 Rolls Royce Improvements relating to electrical plug and socket connector devices

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1898359A (en) * 1930-03-11 1933-02-21 Gilbert & Hertz Inc Safety plug
US2470423A (en) * 1945-12-29 1949-05-17 William H Alford Electrical splicer
US2725545A (en) * 1953-12-28 1955-11-29 Gordon Harry Electrical connector having insulation penetrating means contactiong the conductors
US2720635A (en) * 1954-12-13 1955-10-11 Odegaard John Electrical outlet having insulation piercing means for contacting the conductor of an electric cord
GB770307A (en) * 1955-04-29 1957-03-20 Rolls Royce Improvements relating to electrical plug and socket connector devices

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3141720A (en) * 1961-09-22 1964-07-21 James G Johnson Connector for printed or etched flat conductor cables
US3166373A (en) * 1962-03-06 1965-01-19 Arthur A Berndt Composite strand connectors
US3546660A (en) * 1968-02-10 1970-12-08 Ver Draht & Kabelwerke Ag Electrical connector with insulation piercing means
US3766514A (en) * 1971-11-26 1973-10-16 H Kimm Electric wire connecting device
US3824529A (en) * 1972-11-28 1974-07-16 Bunker Ramo Flat cable connector
US3877774A (en) * 1972-11-28 1975-04-15 Bunker Ramo Flat cable connector
US3810078A (en) * 1973-02-08 1974-05-07 J Chordas Compression splice for electrically coupling electrical conductors
US3842191A (en) * 1973-12-17 1974-10-15 Nat Telephone Supply Co Insulated wire splice
US3907395A (en) * 1974-07-26 1975-09-23 Nexus Inc Electrical plug and jack assembly
US4153327A (en) * 1978-05-05 1979-05-08 Northern Telecom Limited Connector for telephone cords
US4588252A (en) * 1980-12-31 1986-05-13 Ice Roger L Electrode extension holders
US4451104A (en) * 1982-05-27 1984-05-29 At&T Technologies, Inc. Apparatus for splicing electric wires
EP0209452A1 (en) * 1985-07-17 1987-01-21 Goro S.A. Multiple-purpose connector for connecting different cable types of electrical conductors together
FR2585194A1 (en) * 1985-07-17 1987-01-23 France Etat MULTIPURPOSE CONNECTOR FOR CONNECTING DIFFERENT TYPES OF ELECTRIC CABLES OR CONDUCTORS
US4726785A (en) * 1985-07-17 1988-02-23 Goro, S.A. Connector for coupling different types of electric cables
US4752252A (en) * 1986-09-29 1988-06-21 Amp Incorporated Axial grip connector having eccentric jaws
WO1989008337A1 (en) * 1988-02-23 1989-09-08 Raychem Pontoise S.A. Cable connecting module
US5174783A (en) * 1988-02-23 1992-12-29 Raychem Limited Cable connecting module
US5502280A (en) * 1993-07-30 1996-03-26 Etcon Corporation Cable splice protector
US5760332A (en) * 1993-07-30 1998-06-02 Etcon Corporation Cable splice protector
US6069320A (en) * 1993-07-30 2000-05-30 Etcon Corporation Cable splice protector
US20070000304A1 (en) * 2005-06-07 2007-01-04 Bernhard Wild Sensor unit having a connection cable
US7469586B2 (en) * 2005-06-07 2008-12-30 Robert Bosch Gmbh Sensor unit having a connection cable
US10962089B2 (en) * 2015-03-17 2021-03-30 Siemens Aktiengesellschaft Clamping device for a cable

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