EP0267192A1 - Top clamp - Google Patents

Top clamp

Info

Publication number
EP0267192A1
EP0267192A1 EP86904452A EP86904452A EP0267192A1 EP 0267192 A1 EP0267192 A1 EP 0267192A1 EP 86904452 A EP86904452 A EP 86904452A EP 86904452 A EP86904452 A EP 86904452A EP 0267192 A1 EP0267192 A1 EP 0267192A1
Authority
EP
European Patent Office
Prior art keywords
housing
top clamp
cross
end wall
conductors
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.)
Withdrawn
Application number
EP86904452A
Other languages
German (de)
French (fr)
Inventor
Jan-Eric Johansson
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.)
Jamtplast AB
Original Assignee
Jamtplast AB
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 Jamtplast AB filed Critical Jamtplast AB
Publication of EP0267192A1 publication Critical patent/EP0267192A1/en
Withdrawn legal-status Critical Current

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
    • H01R4/10—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
    • H01R4/12—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 twisting
    • 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
    • H01R4/22—End caps, i.e. of insulating or conductive material for covering or maintaining connections between wires entering the cap from the same end

Definitions

  • This invention relates to a top clamp of the kind that includes a housing, suitably made of plastics, whose one end is open whilst the opposite end is closed by means of an end wall, a device for the twisting and the connection of conductors being arranged inside the housing.
  • Top clamps of the kind related above are above all used for the connection of insulated conductors,having one or several leads,inside conduit boxes that can be recessed in walls or ceilings. More specifically,the connection is done thus that the insulation is stripped from the lead-ends of the conductors arriving in the conduit box and that are intended to be connected, where ⁇ upon the thus stripped lead-ends arebrought together to a bundle onto which a top clamp is applied which is rotated a plurality of turns, the in the inside of the top cla located twisting device -that in practice consists of a conically tapering thread provided metal sleeve - effecting an efficient twisting and by those means a permanent connection of the leads.
  • the present invention aims to remove the above-mentioned drawbacks and to create a top clamp that not necessarily must be turned manually by the operator.
  • the top clamp according to the invention is primarily characterized in that on the outside of the end wall a projection is arranged having a cross-sectional form, preferably a hexagonal cross-sectional form, corre- sponding to the cross-sectional form of a rotatable socket in per se known power actuated nut tighteners.
  • FIG. 1 is a perspective view illustrating how a top clamp made in accordance with the invention can be made to rotate by means of a nut tightener in order to twist a plurality of conductors in a conduit box
  • Fig 2 an enlarged perspective view showing a top clamp made in accordance with the principle of the invention.
  • FIG. 1 designates a top clamp that r in a per se known manner,comprises a suitably conically tapering,plastic housing 2 into which an also conically tapering thread-provided metal sleeve 3 has been pressed.
  • the plastic housing 2 is open at its larger end 4 whilst the narrower end is closed by means of an end wall 5.
  • On the outside of the housing 2 two diametrically opposed wings 6,6' are formed /intended to facilitate the turning of the housing by means of the fingers of the hand.
  • a projection 7 with an appropriate length, i.e. 2-6 mm, is formed on the outside of the end wall 5 and in this case having a hexagonal cross-section. More specifically,the cross-sectional form of this projection 7 corresponds to the cross-sectional form of a rotatable socket 8 in- eluded in a nuttightener of a per se known,suitably battery powered kind, in Fig 1 generally designated with 9.
  • Fig 1 10 further denotes a conduit box whereto a plurality of different electric conductors 11 are brought together.
  • the socket 8 is applied onto the projection 7 of the top clamp and the nut tightener 9 is started.
  • the socket will then bring the top clamp into rotation whilst twisting the conductors in a per se known manner (for the sake of clarity the top clamp is shown separated from the conductors in Fig 1, although • in practice these after said rotation are closely connected to the metal sleeve 3) .
  • the too clamp in question thus, by means of the projection 7, can be simply and quickly connected to,optional and/or known power actuated nut tighteners,thus eliminating all need or a manual turning by the operator.

Landscapes

  • Joining Of Building Structures In Genera (AREA)
  • Manufacturing Of Electrical Connectors (AREA)

Abstract

Un serre-fils de plafond comprend un logement (2) en plastique dont une extrémité (4) est ouverte tandis que l'extrémité opposée est fermée au moyen d'une paroi d'extrémité (5), un dispositif (3) permettant de torsader et de connecter les conducteurs étant agencé à l'intérieur du logement. Un élément en saillie (7) agencé à l'extérieur de la paroi d'extrémité (5) possède une forme de section transversale correspondant à la forme de section transversale d'une douille rotative dans un dispositif de serrage d'écrou à commande électrique connu en soi.A ceiling wire clamp comprises a plastic housing (2), one end (4) of which is open while the opposite end is closed by means of an end wall (5), a device (3) for twist and connect the conductors being arranged inside the housing. A protruding element (7) arranged outside the end wall (5) has a cross-sectional shape corresponding to the cross-sectional shape of a rotating sleeve in an electrically operated nut clamping device known per se.

Description

TOP CLAMP
The technical field of the invention
This invention relates to a top clamp of the kind that includes a housing, suitably made of plastics, whose one end is open whilst the opposite end is closed by means of an end wall, a device for the twisting and the connection of conductors being arranged inside the housing.
Background of the invention Top clamps of the kind related above are above all used for the connection of insulated conductors,having one or several leads,inside conduit boxes that can be recessed in walls or ceilings. More specifically,the connection is done thus that the insulation is stripped from the lead-ends of the conductors arriving in the conduit box and that are intended to be connected, where¬ upon the thus stripped lead-ends arebrought together to a bundle onto which a top clamp is applied which is rotated a plurality of turns, the in the inside of the top cla located twisting device -that in practice consists of a conically tapering thread provided metal sleeve - effecting an efficient twisting and by those means a permanent connection of the leads. The operator has been reduced to effect the necessary turning movement by hand in the previously known top clamps of this kind, something which in practice is time-consuming as well as a strain for the fingers of the hand, especially if a multitude of frequently recurring, connecting operations are to be carried out during a working cycle time. This is the case in spite of the presence of wings on the outer side of the plastic housing facilitating the gripping thereof.
Short description of the inventive concept
The present invention aims to remove the above-mentioned drawbacks and to create a top clamp that not necessarily must be turned manually by the operator. To this purpose the top clamp according to the invention is primarily characterized in that on the outside of the end wall a projection is arranged having a cross-sectional form, preferably a hexagonal cross-sectional form, corre- sponding to the cross-sectional form of a rotatable socket in per se known power actuated nut tighteners.
Short description of the attached drawing
In the drawing Fig. 1 is a perspective view illustrating how a top clamp made in accordance with the invention can be made to rotate by means of a nut tightener in order to twist a plurality of conductors in a conduit box, and Fig 2 an enlarged perspective view showing a top clamp made in accordance with the principle of the invention.
Detailed description of' a preferred embodiment of the invention
In the drawing 1 designates a top clamp thatrin a per se known manner,comprises a suitably conically tapering,plastic housing 2 into which an also conically tapering thread-provided metal sleeve 3 has been pressed. The plastic housing 2 is open at its larger end 4 whilst the narrower end is closed by means of an end wall 5. On the outside of the housing 2 two diametrically opposed wings 6,6' are formed /intended to facilitate the turning of the housing by means of the fingers of the hand.
In accordance with the principle of the invention a projection 7 with an appropriate length, i.e. 2-6 mm, is formed on the outside of the end wall 5 and in this case having a hexagonal cross-section. More specifically,the cross-sectional form of this projection 7 corresponds to the cross-sectional form of a rotatable socket 8 in- eluded in a nuttightener of a per se known,suitably battery powered kind, in Fig 1 generally designated with 9. In Fig 1 10 further denotes a conduit box whereto a plurality of different electric conductors 11 are brought together.
The function of the invention
The ends of the conductors that are to be connected together are stripped in.■the usual way and brought together to a bundle onto which the top clamp 1 is applied so that the end of the leads stick into the threaded metal sleeve 3.
At the next stage the socket 8 is applied onto the projection 7 of the top clamp and the nut tightener 9 is started. The socket will then bring the top clamp into rotation whilst twisting the conductors in a per se known manner (for the sake of clarity the top clamp is shown separated from the conductors in Fig 1, although • in practice these after said rotation are closely connected to the metal sleeve 3) .
In accordance with the invention, the too clamp, in question thus, by means of the projection 7, can be simply and quickly connected to,optional and/or known power actuated nut tighteners,thus eliminating all need or a manual turning by the operator.
Possible modifications of the invention
It is evident that the invention is not only limited to the embodiment as shown in the drawing and description. Thus the projection in question can be given another optional cross-sectional form than hexagonal, in order to fit other types of nut tighteners.

Claims

1. Top clamp of the kind that includes a housing(2) suitably made of plastics, whose one end(4) is open whilst the opposite end is closed by means of an end wall(5), a device(3) for the twisting and connection of conductors being arranged inside the housing, c h a r a c t e r i z e d i n that a projection(7) is arranged on the outside of the end wall(5) and having a form in cross-section,e.g. hexagonal, that corresponds to the cross-sectional form of a rotatable socket(8) of known or arbitrary power-actu- tuated nut tighteners.
2. Top clamp according to claim 1, c h a r a c¬ t e r i z e d i n that the projection(7) is made integral with the housing(2).
EP86904452A 1985-07-16 1986-07-10 Top clamp Withdrawn EP0267192A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8503489 1985-07-16
SE8503489A SE8503489L (en) 1985-07-16 1985-07-16 TOPPKLEMMA

Publications (1)

Publication Number Publication Date
EP0267192A1 true EP0267192A1 (en) 1988-05-18

Family

ID=20360915

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86904452A Withdrawn EP0267192A1 (en) 1985-07-16 1986-07-10 Top clamp

Country Status (4)

Country Link
EP (1) EP0267192A1 (en)
AU (1) AU6148686A (en)
SE (1) SE8503489L (en)
WO (1) WO1987000697A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988002379A1 (en) * 1986-10-02 1988-04-07 Bp Chemicals Limited Process for polymerizing one or more 1-olefins in the gas phase in the presence of pulverulent inorganic material
FR2604710B1 (en) * 1986-10-02 1989-06-02 Bp Chimie Sa PROCESS FOR THE POLYMERIZATION OR CO-POLYMERIZATION OF ALPHA-OLEFINS IN THE GASEOUS PHASE, IN THE PRESENCE OF A PULVERULENT INORGANIC SUBSTANCE
DE3911688A1 (en) * 1989-04-10 1990-10-11 Sichert Gmbh & Co Berthold CABLE END LOCKING DEVICE
KR101608180B1 (en) 2015-12-16 2016-03-31 이방열 Double fixing type spring connector for wire connecting

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8700697A1 *

Also Published As

Publication number Publication date
SE8503489D0 (en) 1985-07-16
WO1987000697A1 (en) 1987-01-29
AU6148686A (en) 1987-02-10
SE8503489L (en) 1987-01-17

Similar Documents

Publication Publication Date Title
US4607544A (en) Tool for cutting, stripping and connecting electric wire
US3985411A (en) Hinged ground clamp
US5934943A (en) Electrical connector
US4883921A (en) Cable jointing clamp
US8348705B2 (en) Electrical connector
CA2210372C (en) Wire untwisting apparatus
EP0267192A1 (en) Top clamp
US6364690B1 (en) Connection method and cable connector
KR100739899B1 (en) No-crimp electrical connector side-by-side type
US5230260A (en) Tool for stripping cable insulation and method
HU209798B (en) Apparatus for the mounting of elastic packing shells of wirings
US4188840A (en) Conductor cable untwisting tool
KR930701842A (en) Electrical connector
US5732461A (en) Hand tool
JPH0270213A (en) Device for peeling off shield of cable
US3781771A (en) Coaxial cable connector
US3340496A (en) Electrical connector element
JP4381549B2 (en) Waterproof branch connector
US4334726A (en) Bonding device
US20240235065A1 (en) Wire connection bracket assembly
US11967794B2 (en) Wire connection bracket assembly
US20230058510A1 (en) Wire connection boot assembly
JPH043537Y2 (en)
GB2228466A (en) Unwinding device
JPH043538Y2 (en)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19880119

RIN1 Information on inventor provided before grant (corrected)

Inventor name: JOHANSSON, JAN-ERIC