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WO1996013877A1 - Connecteur de fils electriques - Google Patents

Connecteur de fils electriques Download PDF

Info

Publication number
WO1996013877A1
WO1996013877A1 PCT/US1995/011744 US9511744W WO9613877A1 WO 1996013877 A1 WO1996013877 A1 WO 1996013877A1 US 9511744 W US9511744 W US 9511744W WO 9613877 A1 WO9613877 A1 WO 9613877A1
Authority
WO
WIPO (PCT)
Prior art keywords
wedge
wire
hole
flange
wire connector
Prior art date
Application number
PCT/US1995/011744
Other languages
English (en)
Inventor
Hitesh Cherry
Michael A. Kandros
Daniel V. Nardone
Original Assignee
The Whitaker Corporation
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 The Whitaker Corporation filed Critical The Whitaker Corporation
Publication of WO1996013877A1 publication Critical patent/WO1996013877A1/fr

Links

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
    • H01R4/28—Clamped connections, spring connections
    • H01R4/50—Clamped connections, spring connections utilising a cam, wedge, cone or ball also combined with a screw
    • H01R4/5083—Clamped connections, spring connections utilising a cam, wedge, cone or ball also combined with a screw using a wedge

Definitions

  • the present invention relates to wire connectors for electrical distribution systems of the type having an outer C-shaped clamping member and a wedge for interconnecting two or more wires.
  • wire connectors are widely used to interconnect electrical equipment to power conductors without physically breaking or rerouting the power conductor.
  • the wire connector usually consists of two parts, a C-shaped clamping member and a wedge.
  • Such wire connectors are disclosed in United States Patent numbers 3,280,856 and 3,349,167 both of which are incorporated herein by reference.
  • a typical wire connector is shown in Figures 1 and 2 in a typical application.
  • a wire connector 10 includes a C-shaped clamping member 12 and a wedge 14.
  • the clamping member 12 has a web 16 and two oppositely formed rolled edges 18 that diverge from left to right, as viewed in Figure 1.
  • the rolled edges 18 form opposing channels for receiving a power cable 20, or wire, and a tap lug 22 with the wedge 14 therebetween.
  • power cable herein is intended to include all electrical conductors for interconnecting electrical equipment to electrical power sources, either positive or negative polarity or ground, including cables, wires, and similar structures, of both stranded and solid construction.
  • the tap lug 22 has a cylindrical shank 24 that is disposed within one of the channels and a flange 26 having mounting holes therein.
  • the wedge has opposite edges that diverge similarly to the rolled edges 18 and are concave to better seat the cylindrical shaped power cable 20 and shank 24.
  • the clamping member 12 When installing the wire connector, the clamping member 12 is placed with one rolled edge over the power cable and the shank 24 of the tap lug 22 in the opposite channel. The wedge is then inserted into the larger end of the clamping member and forced into tight engagement with the cable 20 and shank 24. This operation is performed either with a hand tool or a power assisted tool.
  • the power source for the power assisted tool can be hydraulic, electric, or solid propellant, as is well known in the industry.
  • a jumper cable 28, or wire, having a long tongue terminal 30 terminated to one end thereof is electrically connected to the flange 26 by means of a pair of bolts 32 and nuts 34. The other end of the jumper cable is connected to an electrical device 36, such as a transformer or a lightning arrester.
  • This electrical connection may be made to an exterior terminal, such as shown at 38 in Figure 1, or it may be made inside the outer case of the device 36.
  • the tap lug 22 is a convenient way of electrically connecting the terminal 30 to the wire connector 10. However, when this tap lug is not available, the connection can be made by placing a short jumper wire, not shown, in the wire clamp in place of the shank 24, terminating the free end of the jumper wire with a terminal similar to the terminal 30 and then bolting the two terminals together.
  • Use of the jumper wire instead of the tap lug is illustrated in the above referenced '856 and '167 patents. In either case, there are three electrical interfaces between the jumper 28 and the power cable 20.
  • wire connector that will interconnect the terminal 30 of the jumper cable 28 directly to the wire connector without the need for the tap lug 22 or the terminated short jumper, thereby eliminating one of the parts and one of the electrical interfaces. Additionally, a specific wire connector should consistently accommodate a known range of sizes of the power cable 20 to eliminate confusion as to proper combinations of sizes.
  • the wire connector includes a C-shaped clamp member having a web and two rolled over edges on opposite sides of said web. The two rolled over edges diverge toward a first end of the clamp member and form inwardly facing concave channels.
  • a wedge is provided having first and second opposite edges diverging toward a first end of the wedge that are conformably received in a closed position between the two rolled over edges of the clamp member.
  • the first opposite edge has a concave portion and the second opposite edge has a convex portion and are arranged so that when the wedge is in its closed position the convex portion engages one of the concave channels and the concave portion forms a wire receiving cavity with the other of the concave channels for securing to a first wire.
  • An attachment is provided and arranged to secure a terminated end of a second wire to the wedge.
  • FIGURE 1 is a schematic representation of a known wire connector showing how it is used;
  • FIGURE 2 is an isometric view of the wire connector shown in Figure 1;
  • FIGURE 3 is a cross-sectional view taken along the lines 3-3 of Figure 1, showing a wire connector with an associated terminal lug;
  • FIGURE 4 is similar to Figure 3 showing a larger sized terminal lug;
  • FIGURE 5 is a schematic representation of a wire connector incorporating the teachings of the present invention
  • FIGURE 6 is an isometric view of the wire connector shown in Figure 5;
  • FIGURES 7 and 8 are front and side views, respectively, of the wedge shown in Figure 6;
  • FIGURES 9 and 10 are front and side views, respectively, of a second embodiment of the wedge shown in Figure 6;
  • FIGURE 11 is a side view of a third embodiment of the wedge shown in Figure 6.
  • FIG. 5 There is shown in Figures 5 and 6 a wire connector 50 having a C-shaped clamping member 52 and a wedge 54.
  • the clamping member 52 has a web 56 and two oppositely formed rolled edges 58 and 59 that diverge from left to right, as viewed in Figure 5.
  • the rolled edges 58 and 59 form opposing concave channels 60, as best seen in Figure 6, for receiving a power cable 62 and the wedge 54 therebetween.
  • the wedge 54 is relatively flat and elongated having two opposite edges 64 and 66 that diverge from a smaller end 68 toward a larger end 70 so that when assembled to the clamping member 52, in its fully inserted closed position as shown in Figure 5, the edge 64 is adjacent and substantially parallel to the rolled edge 58 and the edge 66 is adjacent and substantially parallel to the rolled edge 59.
  • the wire connector 50 has a longitudinal axis 72 that extends through the wedge 54 equidistant from the edges 64 and 66, as shown in Figure 5.
  • a flange 74 extends from the larger end 70 of the wedge 54.
  • a jumper cable 76, or wire, having a long tongue terminal 78 terminated to one end thereof is electrically attached to the flange 74 by means of a pair of bolts 80 and nuts 82.
  • the other end of the jumper cable is connected to an electrical device 84, such as a transformer or a lightning arrester.
  • This electrical connection may be made to an exterior terminal, such as shown at 86 in Figure 5, or it may be made inside the outer case of the device 84.
  • the edge 64 has a concave surface 88 and the opposite edge 66 has a convex surface 90, both concave and convex surfaces diverging toward the larger end 70 and running substantially the entire length of the wedge 54.
  • the flange 74 is rigidly attached to the larger end 70 of the wedge 54, as shown in Figures 7 and 8.
  • the flange may either by welded to the wedge or formed integral with the wedge by any suitable method such as casting or forging so that the wedge and flange are of unitary construction.
  • the flange 74 is elongated having a longitudinal axis that is perpendicular to the axis 72 and includes two major substantially flat surfaces 92 and 94 that are parallel.
  • Two mounting holes 96 are formed through the flange and spaced to conform to the standard spacing of the holes in the terminal 78.
  • the mounting holes 96 will accommodate a wide range of sizes of terminals for varied current requirements.
  • the flange 74 is joined to the wedge adjacent the larger end 70, well below the concave surface 88, as viewed in Figure 7, so that it does not interfere with the power cable 62 in operation.
  • the convex surface 90 extends from the smaller end 68 to the surface 92 of the flange and is long enough so that when the wire connector 50 is assembled to a power cable of minimum diameter, within the range of acceptable sizes, a space 98 separates the end of the clamping member 52 and the flange 74, as best seen in Figure 6.
  • the convex surface 90 is in wedging engagement with a concave channel 60 while the cable 62 is wedged between the concave surface 88 and the other concave channel 60. Because the convex surface 90 is of known size and shape, the range of sizes of power cables that can be accommodated is also known and does not vary when the size of the terminal 78 changes due to varying current requirements of the device 84.
  • a recess 100 and stiffening rib 102 may be optionally formed in each side of the wedge 54 for making the wedge lighter and easier to grip during use in the field. Note that the two mounting holes 96 have axes 104 that are substantially parallel to the axis 72, as shown in Figure 8.
  • a second embodiment of the wedge 54 is shown in Figures 9 and 10.
  • a wedge 110 is shown having edges 64 and 66 that diverge from a smaller end 68 to a larger end 70, including a concave surface 88, a convex surface 90, and a longitudinal axis 72, similar to those identically numbered elements in the wedge 54.
  • a flange 112 is rigidly attached to and extends from the larger end 70 of the wedge 110 well below the concave surface 88 as shown.
  • the flange 112 is elongated having opposite major substantially flat surfaces 114 and 116 that are parallel.
  • a pair of mounting holes 118 are formed through the flange 112 and are identically sized and spaced as the holes 96 of the flange 74, however, the holes 118 have axes 120 that are substantially perpendicular to the axis 72.
  • the convex surface 90 of the wedge 110 extends from the smaller end 68 to a surface 122 of the flange 112 and is long enough so that when the wire connector 50 is assembled to a power cable of minimum diameter, a space separates the end of the clamping member 52 and the flange 112, in a manner similar to the operation of the wedge 54. This assures that the wedge 110 will properly mate with the clamping member 52.
  • a third embodiment of the wedge 54 is shown in Figure 11.
  • a wedge 130 is shown having edges 64 and 66 that diverge from a smaller end 68 to a larger end 70, including a concave surface 88, a convex surface 90, and a longitudinal axis 72, similar to those identically numbered element in the wedge 110.
  • the wedge 130 instead of a flange 112, the wedge 130 has an extended portion 132, or shank that is long enough to accommodate mounting holes 118 therein in a manner similar to that of the flange 112. Otherwise, the wedge 130 operates in an identical manner to the wedge 54.
  • An important advantage of the present invention is that the number of electrical interfaces between the terminal 78 and the power cable 62 is reduced from three to two thereby reducing power loss.
  • the need for a tap lug 22 is eliminated thereby reducing the number of parts needed to utilize the wire connector 50.
  • the known size and shape of the convex surface 90 permits specifying a precise range of sizes for the power cables that can be accommodated by a specific wire connector 50, thereby eliminating a source of confusion and error.

Landscapes

  • Suspension Of Electric Lines Or Cables (AREA)

Abstract

L'invention se rapporte à un connecteur de fils (50) présentant un élément de serrage en forme de C (52) et une cale d'accouplement (54). L'élément de serrage comprend deux bords retournés, de profil opposé (58, 59), qui forment deux passages concaves opposés (60) destinés à recevoir un câble électrique (62) ainsi que la cale qui bloque solidement le câble en position. Une languette (74) s'étendant à partir de la cale comporte des trous de montage (96). Un fil de liaison (76) présentant une extrémité (78) pourvue d'une borne est connecté électriquement à une surface (92) de la languette par l'intermédiaire de deux boulons (80) passant à travers des trous ménagées dans la borne et les trous de la languette, et de deux écrous (82) serrés en position. La cale comporte deux bords opposés (64, 66) dont l'un présente une surface concave (88) qui entre en contact avec le câble électrique, et l'autre une surface convexe (90) qui entre en contact avec l'un des passages convexes (60) de l'élément de serrage (52).
PCT/US1995/011744 1994-10-31 1995-09-12 Connecteur de fils electriques WO1996013877A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US33178294A 1994-10-31 1994-10-31
US08/331,782 1994-10-31

Publications (1)

Publication Number Publication Date
WO1996013877A1 true WO1996013877A1 (fr) 1996-05-09

Family

ID=23295358

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1995/011744 WO1996013877A1 (fr) 1994-10-31 1995-09-12 Connecteur de fils electriques

Country Status (1)

Country Link
WO (1) WO1996013877A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016023052A1 (fr) * 2014-08-12 2016-02-18 Gebauer & Griller Kabelwerke Gesellschaft M.B.H. Système de contact

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1479041A (fr) * 1966-05-09 1967-04-28 Amp Inc Procédé de connexion de conducteurs et connecteur électrique pour ce procédé
US3462543A (en) * 1968-06-12 1969-08-19 Amp Inc Electrical terminals to terminate conductor members
DE2164926A1 (de) * 1971-12-28 1973-07-12 Calor Emag Elektrizitaets Ag Elektrischer anschluss fuer leiterrohre

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1479041A (fr) * 1966-05-09 1967-04-28 Amp Inc Procédé de connexion de conducteurs et connecteur électrique pour ce procédé
US3462543A (en) * 1968-06-12 1969-08-19 Amp Inc Electrical terminals to terminate conductor members
DE2164926A1 (de) * 1971-12-28 1973-07-12 Calor Emag Elektrizitaets Ag Elektrischer anschluss fuer leiterrohre

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016023052A1 (fr) * 2014-08-12 2016-02-18 Gebauer & Griller Kabelwerke Gesellschaft M.B.H. Système de contact
CN106575828A (zh) * 2014-08-12 2017-04-19 格鲍尔格里勒电缆有限公司 接通系统
CN106575828B (zh) * 2014-08-12 2020-08-14 格鲍尔格里勒电缆有限公司 用于建立导电接通的接通系统和借其建立冷焊的方法
US10971831B2 (en) 2014-08-12 2021-04-06 Gebauer & Griller Kabelwerke Contact system
DE112015003736B4 (de) 2014-08-12 2023-02-02 Gebauer & Griller Kabelwerke Gesellschaft M.B.H. Kontaktsystem und verfahren zur herstellung eines elektrisch leitenden kontaktes zwischen einem aluminiumleiter und einem kontaktbauteil

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