US3846577A - Electrical splice - Google Patents

Electrical splice Download PDF

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Publication number
US3846577A
US3846577A US00377949A US37794973A US3846577A US 3846577 A US3846577 A US 3846577A US 00377949 A US00377949 A US 00377949A US 37794973 A US37794973 A US 37794973A US 3846577 A US3846577 A US 3846577A
Authority
US
United States
Prior art keywords
compartment
sidewalls
conductors
pair
splice
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
US00377949A
Other languages
English (en)
Inventor
T Kuo
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.)
ABB Installation Products Inc
Original Assignee
Thomas and Betts 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
Application filed by Thomas and Betts Corp filed Critical Thomas and Betts Corp
Priority to US00377949A priority Critical patent/US3846577A/en
Priority to AU70550/74A priority patent/AU7055074A/en
Priority to GB2903474A priority patent/GB1426665A/en
Priority to NL7408971A priority patent/NL7408971A/xx
Priority to DE19742432054 priority patent/DE2432054C3/de
Priority to FR7423340A priority patent/FR2237324A1/fr
Priority to DE7422733U priority patent/DE7422733U/de
Priority to SE7408948A priority patent/SE7408948L/
Priority to IT51961/74A priority patent/IT1016334B/it
Priority to BE146433A priority patent/BE817501A/fr
Priority to JP49078365A priority patent/JPS5038084A/ja
Application granted granted Critical
Publication of US3846577A publication Critical patent/US3846577A/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
    • 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
    • H01R4/188—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 having an uneven wire-receiving surface to improve the contact
    • 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
    • H01R4/26—Connections in which at least one of the connecting parts has projections which bite into or engage the other connecting part in order to improve the contact

Definitions

  • An electrical splice comprises a generally elongate body member divided into first and second compartments each adapted to accept a differently sized conductor by notching opposing upstanding sidewalls in such manner as to provide a fist and a second pair of individually defiectable sidewalls and selectively disposing the first pair of sidewalls partially defining the first compartment in such manner as to restrict the opening thereto to prevent the inadvertent insertion therein of a conductor having a size approximating the 1 Claim, 7 Drawing Figures PATENTEDRUY 51914 $846577 SHEEI 2 BF 2 1 ELECTRICAL SPLICE BACKGROUND OF THE INVENTION: 1. Field of the Invention:
  • the invention is directed to the field of connectors and principally to a splice for joining differently sized conductors.
  • a recurring problem with prior art crimpable electrical line splices is their inability to provide an effective, reliable, and secure connection between differently sized conductors where the line splice, for example, has a uniformly sized conductor accepting compartment and a relatively small conductor is to be joined or spliced to a relatively large conductor.
  • the crimping pressure is generally controlled by the size of the larger conductor, in which case, upon crimping the line splice about both conductors, the smaller conductor may be insecurely held therewithin or may in many cases be damaged by the pressure required to afford a reliable crimp about the larger conductor.
  • the smaller conductor may be embedded within the strands of the larger conductor thereby precluding contact with the line splice itself, so that the smaller conductor may slip out of the splice or be insecurely held to the larger conductor within the splice.
  • AWG 22 wire conventionally designated as AWG 22 to, for example, an AWG 8 conductor.
  • cent prior art devices designed to at least partially alleviate this problem have included connectors having, for example, an H-shape providing a pair of overlapping compartments.
  • the drawback, however, in this design stems from the fact that both compartments must be compressed or crimped in series, in which case both the smaller and larger conductors will be subjected to the same crimping force tending to crush or severely deform the smaller conductor during the crimping operation.
  • two longitudinally spaced compartments of similar size are formed from a single ferrule to permit each of the compartments to be crimped separately by a suitably configured die, however, since the compartment adapted for the larger conductor is the same size as compartment adapted for the smaller conductor, the conductors may be inserted inproperly within the ferrule so that the larger forces applied to. the die arranged to crimp the ferrule portion containing the larger conductor are actually applied to that portion of the ferrule containing the smaller conductor which may be overly stressed and severely damaged thereby, resulting in a failure of the resulting joint or splice.
  • the invention overcomes the problems and limitations noted above with respect to prior art devices by side walls, each pair being deflectably deformable independently of the other pair.
  • Each pair of sidewalls and the associated portion of the base portion thus form a discrete, selectively sized conductor receiving compartment.
  • One pair of sidewalls is selectively formed to reduce the associated compartment size relative to that of the other compartment so that only the smaller of the conductors may be inserted in such compartment while the other compartment is selectively sized to receive the larger of the conductors therewithin.
  • the invention serves to properly segregate the larger and smaller conductors to be joined within the splice so that each conductor is required to be inserted within its associated compartment which may then be suitably deformed to complete the splice upon the application of preselected crimping pressures thereto.
  • Insulation or oxide piercing teeth may be provided on the inner surface of the body member to provide a unique splice for insulated or oxide coated conductors of varying sizes. this invention to provide an improved electrical connector.
  • FIG. 1 is a front elevational view of an electrical splice constructed in accordance with the concepts of the invention.
  • FIG. 2 is a top plan view of the device of FIG. 1.
  • FIG. 3 is a side elevational view of the device of F IG. 1.
  • FIG. 4 is a perspective view, partly cut away, and partly in section, of the device of FIG. 1 illustrating the manner in which such device may segregate conductors of different sizes. 7
  • FIG. 5 is a perspective view of the device of FIG. 4 crimped about the conductors inserted therewithin.
  • FIG. 6 is a perspective view of a further embodiment of an electrical splice constructed in accordance with the concepts of the invention.
  • FIG. 7 is a perspective view of still another embodiment of an electrical splice constructed in accordance with the concepts of the invention.
  • FIGS. 1, 2, and 3 there is shown an electrical splice 20 constructed in accordance with the 26 separated from a pair of second sidewalls 28 by a selectively dimensioned slotted portion 30 dividing the body member into a first compartment 32 defined by the pair of first sidewalls 26 and an associated length of the base portion 24 and a second compartment 34 defined by the pair of second sidewalls 28 and the remaining length of the base portion 24.
  • Each of the pair of first sidewalls 26 is selectively formed or bent to provide an overhanging portion 36 restricting the size of the first compartment 32.'By selecting the degree of displacement of each of the first sidewalls 26, thesize of the first compartment 32 may be effectively controlled to permit the receipt therewithin of a particularly sized conductor.
  • first sidewalls 26, shown in FIG. 1 comprise an overhanging portion 36 disposed at a generally oblique angle to the base portion 24, the overhanging portion 36 may be bent or formed, as shown for example in FIG. 7, to provide a pair of overhanging portions 38 disposed essentially parallel to the base portion 24 and spaced a given distance thereabove.
  • second sidewalls 28 shown in FIGS. 1, 2, and 3 as disposed generally perpendicular to the base portion 24 may alternatively, be selectively formed to provide overhanging portions 40, as shown in FIG. 7, while still maintaining the desired difference in size between the second compartment 34 and the first compartment 32.
  • the electrical-splice 20 may be readily, conveniently, and rapidly manufactured from fiat stock blanked to the final shape shown in any of the aforementioned figures. It will, of course, also be readily appreciated that by suitably forming the overhanging portions 38 and 40 shown in FIG. 7 to provide a compartment shape conforming generally to the contour of a particular conductor, further conductor segregation may be accom plished in a relatively convenient, simple, and expeditions manner to enhance the segregative feature of the device.
  • the sidewalls 26 and 28 may be selectively formed to provide for the reception of round, square, rectangular, or other commonly employed conductor cross sectional configurations.
  • the second compartment 34 may be adapted to receive a relatively large conductor of rectangular transverse cross section while the first compartment 32 may be adapted to receive a small conductor of circular transverse crosssection.
  • Each of the compartments 32 and 34 may thus be designed to provide the most efficient connection between two or more conductors to be joined by the splice 20.
  • a plurality of teeth 42 (FIG. 6) may be disposedon the inner surface of the splice, each of the Turning now to FIGS.
  • FIG. 4 and 5 there are shown disposed within the first compartment 32 of the electrical splice 20 a pair of relatively small conductors 44, 44' the ends of which extend through the first compartment 32 and into and beyond the second compartment 34. Also disposed within the second compartment 34 is a relatively large conductor 46 at least partially overlying the extending portions of the smaller conductors 44, 44'. Because of the restrictive opening of the first compartment 32, the larger conductor 46 is precluded from being inserted therewithin since its peripheral dimension is greater than the opening afforded by the first compartment 32. However, conductor 46 will fit properly within the second compartment 34 of the line splice 20, leaving the first compartment 32 free for the insertion therewithin of the smaller conductor 44, 44. A suitably stepped die set (not shown) may now be employed to individually crimp the associated side walls of each of the compartments 32 and 34 so that a tight,
  • non-destructive joint may be formed about the differently sized conductors.
  • the portion of the smaller conductors 44, 44' extending within the second compartment 34 may be subjected to. a relatively high crimping force distorting and deforming such portion of the conductors 44, 44' against the conductor 46, it will be seen that integrity of the splice is essentially uneffected thereby since the jointbetween the smaller conductors 44, 44' and the splice 20 is actually established within the first compartment 32, which will have been subjected to die forces designed to provide a proper crimp thereat.
  • the final assembly of the splice is shown in detail in FIG. 5.
  • the conductors 44, 44 are securely engaged within the first compartment 32 and the conductor 46 is securely engaged within the second compartment 34.
  • the ends of the conductors 44, 44' extending beyond the second compartment 34 and shown as seated on either side of the conductor 46 may be severed from the splice 20, if desired, to improve the appearance of the finished splice, although these ends may remain intact without effecting the security, integrity, or reliability of the splice.
  • the notched portion 30 of splice 20 provides a small window-like opening .for inspecting the relative dispositionvof the individual conductors in the splice 20 after the crimping operation.
  • One may thus readily ob serve whether the conductors 44, 44 have been inserted fully within the first compartment 32 and adjoin the conductor 46 at the juncture between the firstand second compartments 32 and 34, respectively.
  • An electrical splice comprising: a body member having a base portion extendingthe length of said body portion, a first compartment including a first given length of said base portion and a pair of first sidewalls, and a second compartment .including the remaining length of said base portion and a pair of second sidewalls foldable independently of said pair-of first sidewalls; said pair of first sidewalls being selectively folded inwardly towards one another to provide an overhangteeth 42 being proportioned'to penetrate the insulative 1 or oxide coating and engage theconductive portion of the conductors.
  • the arrangement of teeth 42 shown in FIG. 6 maybe employed, of course, with any of the configurations described heretofore;

Landscapes

  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Multi-Conductor Connections (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
US00377949A 1973-07-10 1973-07-10 Electrical splice Expired - Lifetime US3846577A (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
US00377949A US3846577A (en) 1973-07-10 1973-07-10 Electrical splice
AU70550/74A AU7055074A (en) 1973-07-10 1974-06-27 Electrical splice
GB2903474A GB1426665A (en) 1973-07-10 1974-07-01 Electrical crimping sleeve
NL7408971A NL7408971A (nl) 1973-07-10 1974-07-02 Verbindingsstuk voor elektrische geleiders.
FR7423340A FR2237324A1 (fr) 1973-07-10 1974-07-04
DE7422733U DE7422733U (de) 1973-07-10 1974-07-04 Verbindungsstück für elektrische Leiter
DE19742432054 DE2432054C3 (de) 1973-07-10 1974-07-04 Verbindungsstück für elektrische Leiter
SE7408948A SE7408948L (sv) 1973-07-10 1974-07-08 Elektriskt forbindningsdon.
IT51961/74A IT1016334B (it) 1973-07-10 1974-07-08 Giunto elettrico per conduttori
BE146433A BE817501A (fr) 1973-07-10 1974-07-10 Perfectionnements aux connecteurs de raccordement de conducteurs electriques
JP49078365A JPS5038084A (fr) 1973-07-10 1974-07-10

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00377949A US3846577A (en) 1973-07-10 1973-07-10 Electrical splice

Publications (1)

Publication Number Publication Date
US3846577A true US3846577A (en) 1974-11-05

Family

ID=23491132

Family Applications (1)

Application Number Title Priority Date Filing Date
US00377949A Expired - Lifetime US3846577A (en) 1973-07-10 1973-07-10 Electrical splice

Country Status (10)

Country Link
US (1) US3846577A (fr)
JP (1) JPS5038084A (fr)
AU (1) AU7055074A (fr)
BE (1) BE817501A (fr)
DE (1) DE7422733U (fr)
FR (1) FR2237324A1 (fr)
GB (1) GB1426665A (fr)
IT (1) IT1016334B (fr)
NL (1) NL7408971A (fr)
SE (1) SE7408948L (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0649187A1 (fr) * 1993-10-13 1995-04-19 Hoechst Aktiengesellschaft Article moulé avec contact électrique
EP2333903A1 (fr) * 2009-12-09 2011-06-15 Robert Bosch GmbH Connexion réalisée par sertissage dotée de différentes hauteurs de sertissage

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1189569A (fr) * 1957-01-10 1959-10-05 Burndy Corp Connexion sertie à saillies

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1189569A (fr) * 1957-01-10 1959-10-05 Burndy Corp Connexion sertie à saillies

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0649187A1 (fr) * 1993-10-13 1995-04-19 Hoechst Aktiengesellschaft Article moulé avec contact électrique
US5692922A (en) * 1993-10-13 1997-12-02 Hoechst Aktiengesellschaft Molding with electrical contact
EP2333903A1 (fr) * 2009-12-09 2011-06-15 Robert Bosch GmbH Connexion réalisée par sertissage dotée de différentes hauteurs de sertissage

Also Published As

Publication number Publication date
JPS5038084A (fr) 1975-04-09
GB1426665A (en) 1976-03-03
NL7408971A (nl) 1975-01-14
BE817501A (fr) 1975-01-10
AU7055074A (en) 1976-01-08
SE7408948L (sv) 1975-01-13
DE2432054B2 (de) 1975-12-11
DE7422733U (de) 1974-10-24
IT1016334B (it) 1977-05-30
DE2432054A1 (de) 1975-01-30
FR2237324A1 (fr) 1975-02-07

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