EP0809325A1 - Dispositif d'installation électrique et borne de connexion pour le dispositif - Google Patents

Dispositif d'installation électrique et borne de connexion pour le dispositif Download PDF

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Publication number
EP0809325A1
EP0809325A1 EP97108102A EP97108102A EP0809325A1 EP 0809325 A1 EP0809325 A1 EP 0809325A1 EP 97108102 A EP97108102 A EP 97108102A EP 97108102 A EP97108102 A EP 97108102A EP 0809325 A1 EP0809325 A1 EP 0809325A1
Authority
EP
European Patent Office
Prior art keywords
terminal
clamping
busbar
web
screw
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.)
Granted
Application number
EP97108102A
Other languages
German (de)
English (en)
Other versions
EP0809325B1 (fr
Inventor
Klaus-Peter Eppe
Volker Schmitt
Rolf Goehle
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 Patent GmbH
Original Assignee
ABB Patent GmbH
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 ABB Patent GmbH filed Critical ABB Patent GmbH
Publication of EP0809325A1 publication Critical patent/EP0809325A1/fr
Application granted granted Critical
Publication of EP0809325B1 publication Critical patent/EP0809325B1/fr
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
    • H01R4/28—Clamped connections, spring connections
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/36—Conductive members located under tip of screw
    • H01R4/363—Conductive members located under tip of screw with intermediate part between tip and conductive member

Definitions

  • the invention relates to an electrical installation device according to the preamble of claim 1 and a connecting terminal according to the preamble of claim 3.
  • a line circuit breaker, a residual current circuit breaker or any other installation device in which such connection terminals are provided is referred to as an installation device.
  • connection terminal which has a box-shaped terminal frame, the wall of which receives the clamping screw and is formed by two superimposed web ends, projections being provided on the web ends, which are inserted or pressed into the side walls of the clamping frame so that the clamping frame does not deform when jammed.
  • connection terminal in which an annular box frame and an annular terminal frame are intertwined, the clamping screw which is screwed into the terminal frame, a web of the Reaches through the box frame. Electrical connection elements can be clamped between the box frame and the clamp frame on the one hand and the web and the head of the clamp screw on the other hand.
  • the terminal lug of a busbar is inserted between the screw head and the upper web of the box frame and clamped therein; on the other hand, the connecting line, seen from the front, is clamped behind the busbar. If, for example, a three-phase busbar block is clamped on, it is no longer possible to see whether the connecting conductor is clamped correctly. This can result in incorrect connections.
  • the object of the invention is to provide an installation switch and a connection terminal for the installation switch of the type mentioned, in which the disadvantages of the known installation switches or connection terminals are prevented and in which incorrect connections are reliably avoided.
  • the installation switch is designed in such a way that, based on the front side, the busbar can be clamped with its connecting lug behind the connecting wire to the connecting terminal.
  • the terminal for the installation switch is designed as specified in claim 3.
  • the terminal body is cylindrical and has an internal thread at one end for receiving the clamping screw and axially extending slots on opposite surface lines through which the terminal spaces are accessible.
  • the slots can be shorter than the length of the terminal body, so that the end edges of the slots, which are opposite the clamping screw, serve as counter bearings for the connecting lug or the connecting conductors.
  • a clamping piece can also be used in the end region of the slots opposite the clamping screw, which divides the two clamping spaces for the connecting lug and the conductor end from one another.
  • This clamping piece can then be bent at least on the clamping surface, which faces the clamping screw, in a V-shape, according to claim 6; this forms a channel in which the lead wire is guided against rotation. This means that when the clamping screw is screwed on, the line wire is not twisted in relation to the clamping piece.
  • the clamping piece is bent rectangular and has an elongated tab which engages through an opening into the interior of the installation switch, so that an inner conductor of the installation switch can be connected to it.
  • a further embodiment of the connecting terminal can go in that the terminal body has a U-shape, the legs of which are at least partially curved in a circle, so that a cylinder-like section is formed which carries an internal thread into which the clamping screw can be screwed.
  • the legs of the U-shape are in the region of their free ends by means of a respective web, which is in the shape of a cylinder adapt, connected to each other, wherein the connection can preferably be a welded connection.
  • the screw is a head-free bolt screw (grub screw) which can be completely screwed into the cylindrical section.
  • grub screw head-free bolt screw
  • a space with a rectangular cross-section, seen in the direction of the U-shape contour, is formed in the area of the web of the U-shape, which space serves to accommodate the clamping piece. If this clamping piece is inserted into the terminal body, then a conductor connection and / or a connecting tab of a busbar can be clamped between the screw end and the clamping piece and the clamping piece and the web.
  • a connecting conductor is clamped between the screw head and the clamping piece and, seen from the front, a connecting lug is clamped between the clamping piece and the web. This makes it possible for the connecting conductor to be clamped to the terminal in front of the busbar, so that it is always visible whether the connecting conductor is correctly connected.
  • the terminal requires a few openings on the installation device, such as an opening at the top of the front through which the clamping screw is accessible, and then further openings on the side wall through which the connecting conductor or the connecting tab can be inserted into the terminal.
  • the opening through which the connecting conductor is inserted is closer to the front than the opening through which the connecting lug is inserted. This enables the conductor connections to be more accessible and more visible, especially in multi-row distributions.
  • a flag is formed on the web in the opposite direction to the legs of the U-shape, which protrudes downward and then closes the insertion opening for the connecting flag of the busbar when the terminal frame or the terminal body is accidentally moved upward .
  • a major advantage is that the accessibility and visibility of the conductor connections in multi-row distributions is considerably improved.
  • the permissible torque when a conductor is jammed is also higher, which is due to the fact that the screw is guided in a thread inside the leg, that is to say the cylindrical shape. Since the thread pitch can be increased in this embodiment, the number of screw turns required to fix the conductor can also be reduced.
  • the clamping screw can be assigned a pressure piece for improved power transmission to the connecting conductor.
  • FIG. 1 shows a clamp 10 according to the invention, with a clamp body 11, a clamp screw 12 and a clamping piece 13, which is shown outside the clamp body.
  • the clamp body 11 has a U-shape with a web 14 and adjoining legs 15 and 16, which are formed in the region 14 and 18 adjacent to the web 14 in a straight or planar manner and are aligned perpendicular to the likewise planar web.
  • arcuate and curved sections 19 and 20 Connected to the flat sections 17 and 18 in cross section are arcuate and curved sections 19 and 20, which complement each other to form a cylindrical shape, the central axis of which runs perpendicular to the web and on whose inner surface an internal thread 21 is attached.
  • the free ends of the leg sections 19 and 20 have webs 22, 23; 24, 25, which also complement each other to form a circle in cross section and which also carry the internal thread 21 on their inside.
  • the webs 22, 23: 24, 25 are welded to one another at their joints, for example by means of laser welding or electron beam welding.
  • the web 14 has an L-shaped flag 26, the legs 27 of which run perpendicular to the plane of the web 14 and project in the opposite direction to the legs 15 and 16 have a T-shaped extension 28.
  • the clamping piece 13 is inserted into the space which is laterally delimited by the two sections 17 and 18 and has a rectangular contour, which has a section 29 which is rectangular in cross section and adapted to the contour, with a lower and upper side plane 30, 31, a web 32 and a web 33, the web 33 being overhanged by a tab 34 which lies in the extension of the side wall 30 and in the assembled state for connecting inner conductors within the installation switching device, that holds the clamp serves. Stops 35, 36 are integrally formed on the web 33 on both sides, projecting beyond the longitudinal edge of the side wall 30 with the tab 34.
  • the clamping piece 13 according to FIG. 1 can be produced in that an elongated copper strip with the two tabs 35 and 36 is formed at one end by rolling up to the rectangular cross section. With the web 32 first, the clamping piece is pushed into the area between the two leg sections 17 and 18. The clamping piece 13 can also be pushed up into the area of the thread 21 between the two sections 19 and 20.
  • the clamp is installed in an installation device 40, see Fig. 2, and the clamping screw is accessible through an opening 41 on the front side and the clamp itself through two openings 42 and 43 on the side wall, through the opening 42 a connecting conductor and through the Opening 43, which lies in a slot 44, a terminal lug of a busbar can be inserted.
  • This configuration can be seen in FIG. 3.
  • a cutout 47 and a cutout 48 are shown on the end faces, which together with the cutouts on the other half (not shown) of a circuit breaker housing complement the recesses 42 and 43 with the slot 44.
  • a clamp 50 is inserted into a clamp receiving space 49 (without the screw 12 being drawn), the clamp piece 13 with the web 32 also being visible.
  • the flag 26 is visible, which engages with the T-shaped section 28 in a recess 51 in the housing. If the clamp body is now shifted upwards, the flag with the T-shaped projections 28 covers the access slot or the access opening 48 or 43 and if the screw is practically screwed onto the upper side wall 31 of the clamping piece, then the screw covers the screw also access through the openings 42 and 47 into the interior of the clamp body 50.
  • the connecting terminal can also be produced simply in that a cylindrical tube piece 60 is provided with opposing slots 61 and 62 which run in the axial direction. At one end, located in Fig. 4 there is an internal thread 63, into which a clamping screw, for example a grub screw such as that which is designated in FIG. 1 with the reference number 12, can be screwed.
  • a clamping screw for example a grub screw such as that which is designated in FIG. 1 with the reference number 12
  • the lower edges 64 and 65 of the slots 61 and 62 then serve as a clamping stop, so that a connecting conductor can be clamped between the connecting terminal and the two edges 64 and 65.
  • the connecting conductor can also be a connecting lug of a busbar.
  • a cap screw could also be used.
  • the slot 43, 44 (Fig. 2) can also be designed so that a connecting conductor can be connected there.
  • the opening 42 in such a way that a connecting lug of a busbar can be used. This means that the installation device can also be used when it is to be used in an existing installation system.
  • a connecting conductor is to be inserted between the clamping screw 12 and the clamping piece 29, then the connecting conductor would twist when the screw 12 was closed; this can be prevented by providing the side plane 31 facing the clamping screw 12 with a V-shape 31a, the V-bottom of which extends in the direction of insertion of the connecting conductor. Possibly. such a V-shape can also be provided in the lower side plane 30.
  • transverse beads could also be provided, which provide protection against rotation.

Landscapes

  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
  • Breakers (AREA)
EP97108102A 1996-05-25 1997-05-20 Dispositif d'installation électrique et borne de connexion pour le dispositif Expired - Lifetime EP0809325B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19621194A DE19621194A1 (de) 1996-05-25 1996-05-25 Elektrisches Installationsgerät und Anschlußklemme für das Installationsgerät
DE19621194 1996-05-25

Publications (2)

Publication Number Publication Date
EP0809325A1 true EP0809325A1 (fr) 1997-11-26
EP0809325B1 EP0809325B1 (fr) 2001-11-07

Family

ID=7795368

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97108102A Expired - Lifetime EP0809325B1 (fr) 1996-05-25 1997-05-20 Dispositif d'installation électrique et borne de connexion pour le dispositif

Country Status (2)

Country Link
EP (1) EP0809325B1 (fr)
DE (2) DE19621194A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1028488A1 (fr) * 1999-02-10 2000-08-16 ABBPATENT GmbH Borne de connexion pour un appareillage d'installation électrique
WO2003041226A1 (fr) * 2001-11-06 2003-05-15 Abb Service S.R.L. Borne pour dispositif modulaire basse tension
EP1916740A1 (fr) * 2006-10-28 2008-04-30 ABB PATENT GmbH Commutateur d'installation et borne par serrage pour un commutateur d'installation

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19938883A1 (de) * 1999-08-17 2001-04-19 Langmatz Lic Gmbh Schraubklemme für elektrische Kabel
DE19962289A1 (de) * 1999-12-23 2001-06-28 Abb Patent Gmbh Anschlussklemmenanordnung für ein elektrisches Installationsgerät
DE102005055598A1 (de) * 2005-11-19 2007-05-31 Phoenix Contact Gmbh & Co. Kg Schraubklemme und Reihenklemme
DE102007041249A1 (de) 2006-10-28 2008-04-30 Abb Ag Installationsschaltgerät und Anschlussklemme für ein Installationsschaltgerät

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4526437A (en) * 1983-03-17 1985-07-02 Erico Products, Inc. Electrical bracket
WO1988007772A1 (fr) * 1987-04-03 1988-10-06 Eleco Italiana S.R.L. Raccord de derivation electrique
EP0454019A1 (fr) * 1990-04-26 1991-10-30 ABBPATENT GmbH Borne de raccordement à vis, spécialement pour un appareil de commutation adjacent ou des appareils similaires

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5107396A (en) * 1991-06-03 1992-04-21 General Electric Company Circuit breaker combined terminal lug and connector
DE9406108U1 (de) * 1994-04-13 1994-06-16 Klöckner-Moeller GmbH, 53115 Bonn Rahmenklemme für elektrische Geräte
FR2724062B1 (fr) * 1994-08-26 1996-11-15 Soule Sa Connecteur pour raccorder un cable electrique rigide basse tension a un appareil

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4526437A (en) * 1983-03-17 1985-07-02 Erico Products, Inc. Electrical bracket
WO1988007772A1 (fr) * 1987-04-03 1988-10-06 Eleco Italiana S.R.L. Raccord de derivation electrique
EP0454019A1 (fr) * 1990-04-26 1991-10-30 ABBPATENT GmbH Borne de raccordement à vis, spécialement pour un appareil de commutation adjacent ou des appareils similaires

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1028488A1 (fr) * 1999-02-10 2000-08-16 ABBPATENT GmbH Borne de connexion pour un appareillage d'installation électrique
WO2003041226A1 (fr) * 2001-11-06 2003-05-15 Abb Service S.R.L. Borne pour dispositif modulaire basse tension
EP1916740A1 (fr) * 2006-10-28 2008-04-30 ABB PATENT GmbH Commutateur d'installation et borne par serrage pour un commutateur d'installation
WO2008052710A1 (fr) * 2006-10-28 2008-05-08 Abb Ag Appareil de branchement d'une installation et borne de raccordement pour un appareil de branchement d'installation

Also Published As

Publication number Publication date
DE19621194A1 (de) 1997-11-27
DE59705237D1 (de) 2001-12-13
EP0809325B1 (fr) 2001-11-07

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