WO1987000697A1 - Top clamp - Google Patents

Top clamp Download PDF

Info

Publication number
WO1987000697A1
WO1987000697A1 PCT/SE1986/000331 SE8600331W WO8700697A1 WO 1987000697 A1 WO1987000697 A1 WO 1987000697A1 SE 8600331 W SE8600331 W SE 8600331W WO 8700697 A1 WO8700697 A1 WO 8700697A1
Authority
WO
WIPO (PCT)
Prior art keywords
top clamp
housing
cross
projection
end wall
Prior art date
Application number
PCT/SE1986/000331
Other languages
French (fr)
Inventor
Jan-Eric Johansson
Original Assignee
Jämtplast 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 Jämtplast Ab filed Critical Jämtplast Ab
Publication of WO1987000697A1 publication Critical patent/WO1987000697A1/en

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.

Abstract

A top clamp comprising a housing (2) 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 twisting and connecting conductors being arranged inside the housing. A projection (7) is arranged on the outside of the end wall (5) having a cross-sectional form corresponding to the cross-sectional form of a rotatable socket in a power actuated nut tightener being per se known.

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).
PCT/SE1986/000331 1985-07-16 1986-07-10 Top clamp WO1987000697A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8503489-0 1985-07-16
SE8503489A SE8503489L (en) 1985-07-16 1985-07-16 TOPPKLEMMA

Publications (1)

Publication Number Publication Date
WO1987000697A1 true WO1987000697A1 (en) 1987-01-29

Family

ID=20360915

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1986/000331 WO1987000697A1 (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)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0392089A2 (en) * 1989-04-10 1990-10-17 Sichert GmbH & Co. Cable end closure device
US4970279A (en) * 1986-10-02 1990-11-13 Bp Chemicals Limited Process for polymerizing one or more 1-olefins in the gas phase in the presence of pulverulent inorganic material
US5063110A (en) * 1986-10-02 1991-11-05 Bp Chemicals Limited Composition comprising prepolymer powder and pulverulent inorganic material
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
No relevant documents have been disclosed. *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4970279A (en) * 1986-10-02 1990-11-13 Bp Chemicals Limited Process for polymerizing one or more 1-olefins in the gas phase in the presence of pulverulent inorganic material
US5063110A (en) * 1986-10-02 1991-11-05 Bp Chemicals Limited Composition comprising prepolymer powder and pulverulent inorganic material
EP0392089A2 (en) * 1989-04-10 1990-10-17 Sichert GmbH & Co. Cable end closure device
EP0392089A3 (en) * 1989-04-10 1991-04-17 Sichert GmbH & Co. Cable end closure device
KR101608180B1 (en) 2015-12-16 2016-03-31 이방열 Double fixing type spring connector for wire connecting

Also Published As

Publication number Publication date
SE8503489D0 (en) 1985-07-16
EP0267192A1 (en) 1988-05-18
AU6148686A (en) 1987-02-10
SE8503489L (en) 1987-01-17

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