EP2489100B1 - Borne à vis avec couvercle et appareil de coupure d'installation - Google Patents

Borne à vis avec couvercle et appareil de coupure d'installation Download PDF

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Publication number
EP2489100B1
EP2489100B1 EP10760937.2A EP10760937A EP2489100B1 EP 2489100 B1 EP2489100 B1 EP 2489100B1 EP 10760937 A EP10760937 A EP 10760937A EP 2489100 B1 EP2489100 B1 EP 2489100B1
Authority
EP
European Patent Office
Prior art keywords
terminal
screw
frame
cover
clamping 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.)
Not-in-force
Application number
EP10760937.2A
Other languages
German (de)
English (en)
Other versions
EP2489100A1 (fr
Inventor
Ralf Wieland
Klaus-Peter Eppe
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 AG Germany
Original Assignee
ABB AG Germany
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 AG Germany filed Critical ABB AG Germany
Publication of EP2489100A1 publication Critical patent/EP2489100A1/fr
Application granted granted Critical
Publication of EP2489100B1 publication Critical patent/EP2489100B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5855—Electric connections to or between contacts; Terminals characterised by the use of a wire clamping screw or nut
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/08—Terminals; Connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H9/0264—Protective covers for terminals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/44—Means for preventing access to live contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/22—Bases, e.g. strip, block, panel
    • H01R9/24—Terminal blocks
    • H01R9/26—Clip-on terminal blocks for side-by-side rail- or strip-mounting
    • H01R9/2625—Clip-on terminal blocks for side-by-side rail- or strip-mounting with built-in electrical component
    • H01R9/2633—Clip-on terminal blocks for side-by-side rail- or strip-mounting with built-in electrical component with built-in switch

Definitions

  • the invention relates to a screw terminal for an electrical installation switching device for connecting an electrical connection conductor, comprising a terminal frame having a first and a second transverse leg, a first and second longitudinal leg, wherein the transverse and longitudinal legs frame a front and rear terminal insertion, wherein the first transverse leg a Having threaded bore for receiving a clamping screw, and wherein the second transverse leg is covered with a bottom plate comprehensive insulating cover, according to the preamble of claim 1.
  • the invention further relates to an electrical service switching device according to claim 7.
  • Screw terminals are widely used, in particular, in domestic installation technology and serve to connect electrical connection conductors to an installation device, for example a circuit breaker or a fault current circuit breaker.
  • Such service switching devices have a Isolierstoffgeophuse with at least one front side, one of these opposite mounting side, may be provided on the fastening devices for snapping or otherwise attaching the installation switching device to a support rail or other fastening device, as well as with the front and the attachment side connecting narrow and broadsides.
  • connection conductors are usually mounted in the region of the narrow sides in the service switching device. Inside the service switching device are the other required for the intended function of the installation switching device components or assemblies, such as triggers, shifter and contacts, arc quenching, alignment, etc.
  • Known screw terminals are realized for example as so-called box terminals. They have a clamping frame with an approximately rectangular cross-section and a clamping screw, which projects through a threaded bore in a first transverse leg of the terminal frame in this. Turning the clamping screw moves the clamp frame along the axis of the clamping screw. Inside the terminal frame, a terminal space is formed for clamping a terminal conductor.
  • a variant of the box terminal additionally has a contact strip on which presses the clamping screw, so that the connection conductor between the contact strip and the second transverse leg is clamped.
  • the clamping screw When the clamping screw is screwed in this latter type of box terminals, it first strikes the contact strip. Upon further rotation of the clamping screw in the screwing direction, the clamping screw is supported on the contact strip, and the clamping frame pushes thereby in the direction of the free end of the clamping screw to the top. As a result, the second transverse leg is moved upward in the direction of the contact strip. An inserted in the terminal space between the second transverse leg and the contact strip connecting conductor is thereby clamped between the contact strip and the second transverse leg.
  • the housing of the service switching device in the interior of which such a screw terminal is arranged, has a Gesimousein Kunststoffö réelle, through which a connecting conductor in the housing and in the terminal space of the terminal frame is inserted.
  • the connection conductor When the connection conductor is clamped, the second transverse leg of the terminal frame, against which the connection lead to be connected, can be visible and touchable through the insertion opening. Since the terminal frame is under tension during operation, avoid touching the terminal frame.
  • the cover includes a bottom plate and a cover rib that covers the leading edge of the second transverse leg of the screw when the cover is attached to the screw.
  • the cover has on the Abdecksteg two snap hooks, which extends parallel to the bottom plate to the rear toward the rear edge of the second transverse leg.
  • the snap hooks snap into two locking grooves in the longitudinal legs of the screw.
  • To mount the cover it must be pushed onto the clamping frame from the front. There is no guide for the cover, so this screw is not suitable for automated assembly. Because the snap hooks are attached to the cover bar, there is a lock on one side to the front side.
  • the bottom plate could therefore stand out on one side of the second transverse leg and the insulating effect would no longer be given. If you wanted to prevent that, you would also need to attach more locking elements, which would further complicate the assembly.
  • the object of the invention is therefore to develop a screw of the type mentioned in such a way that the attachment of the cover improves on the clamping frame and is suitable for automated assembly.
  • the bottom plate carries on a first and second opposite narrow side each have a first and second Abdecksteg, which Abdeckstege are oriented perpendicular to the broad side of the bottom plate, and the bottom plate further carries on a third and fourth, opposite narrow side depending on a first and second snap hook.
  • the two front and rear cover webs created a kind of receiving pocket for the second transverse leg of the screw.
  • the cover is thereby guided when plugging.
  • the cover webs are well fixed to the clamping frame.
  • the clamping screw protrudes through the threaded hole in the terminal frame, and the terminal frame is slidably guided in its installed position in the housing of the service switching device parallel to the central axis of the clamping screw, so that the connection conductor is clamped in the terminal frame
  • the surface contour of the bottom plate of the surface contour of the second transverse leg is adjusted.
  • the second transverse leg may have a slightly V-shaped cross-sectional contour, so that the surface contour of the second transverse leg is channel-shaped with a longitudinal direction of extension of the channel from the front to the rear terminal insertion opening.
  • a connecting conductor to be connected is better guided and held with its connection end in the second transverse limb.
  • the bottom plate has a corresponding channel shape, so that the bottom plate fits like a key to the lock on the second transverse leg when the cover is plugged.
  • the latching grooves are mounted near the front terminal insertion opening.
  • a free surface in the rear part of the longitudinal leg is available for the installation of the screw in the housing.
  • the locking grooves are mounted in the middle between the front and rear insertion opening. Due to the central locking provided thereby lifting the bottom plate of the second transverse leg is further difficult.
  • a contact strip is provided within the terminal frame, on which presses the clamping screw, and the connection conductor is clamped between the second transverse leg and the contact strip.
  • a screw terminal 10 according to the invention is shown, once seen from the rear and once from the front terminal insertion 64, 34 ago.
  • the screw terminal 10 comprises a terminal frame 14, a clamping screw, not shown here, and a cover 80.
  • the terminal frame 14 and the clamping screw each consist of an electrically conductive material, usually of metal, such as stainless steel or a copper alloy.
  • the cover 80 is made of an insulating material. It can be produced particularly economically as an injection-molded part on a thermoplastic.
  • the terminal frame 14 in this example is for receiving a lead with a relatively large cross-section of 50 mm 2 is provided. But on other types of terminal frame, for example, for a conductor cross section of 35 mm 2 , the invention is applicable.
  • the terminal frame 14 is approximately cuboidal and has an approximately rectangular cross-section with a first longitudinal leg 20, a second longitudinal leg 22 extending parallel thereto, a first transverse leg 24 running perpendicular to the longitudinal legs 20, 22 and a second transverse leg 26 extending parallel to the first transverse leg 24 ,
  • the clamping frame 14 is usually used as a stamped bent part of a metal strip produced.
  • the first transverse leg 24 is formed by overlapping stacking of the two end pieces 241, 242 of the sheet metal strip after the cuboid box shape has been bent.
  • the second transverse leg 26 has a channel-shaped contour, which facilitates the insertion and holding of a terminal end to be clamped.
  • the transverse legs 24, 26 and the longitudinal legs 20, 22 respectively frame a front and rear terminal insertion opening 34, 64 for insertion of a terminal conductor end.
  • the first transverse leg 24 has a threaded bore 28 into which a clamping screw (not shown in FIG Fig. 1 and 2 , see reference 64 in Fig. 5 ) can be used.
  • a connecting conductor inserted into the front terminal connection opening 34 can thus be clamped by tightening the clamping screw between the clamping screw and the second transverse leg 26.
  • the cover 80 is in Fig. 3 shown alone. It comprises a bottom plate 81, which is formed substantially rectangular.
  • the bottom plate 81 has a contour adapted to the contour of the second transverse leg 26 contour, so it is also formed channel-shaped.
  • first and a second narrow side 82, 83 of the bottom plate 81 are each a Abdecksteg 84, 85 formed, which webs perpendicular to the broad side of the bottom plate 81 rise.
  • the first and second narrow sides 82, 83 are those that would abut the second transverse leg 26 at the front and rear terminal insertion openings 34, 64, respectively, when the cover 80 is engaged.
  • cover 80 is attached to the second transverse leg 26, so cover the two Abdeckstege 84, 85 at the front and at the rear terminal insertion opening 34, 64 each of the narrow side of the second transverse leg 26 from.
  • the Abdeckstege 84, 85 also have a V-shaped contour, this is adapted to the V-shaped cross-sectional contour of the channel-shaped bottom plate 81.
  • the two Abdeckstege 84, 85 together with the bottom plate 81 a box-shaped receptacle for the terminal frame 14 with its second transverse leg 26.
  • the clamping frame 14 is guided between the two cover webs 84, 85, and the two cover webs 84, 85 are then fixed well to the clamping frame 14.
  • each snap hook 90, 91 has an L-shaped holding part 95, 96, and a latching nose 97, 98.
  • a first leg of each holding part 95, 96 is perpendicular to the third and fourth narrow side 86, 87 from a second leg points perpendicular to the bottom plate upwards, so that it runs approximately parallel to the first and second longitudinal legs 20, 22, when the cover is attached to the clamping frame.
  • the second legs of the holding parts 95, 96 form additional guide aids when attaching the cover 80 to the clamping frame 14.
  • a first and a second locking groove 92, 93 are introduced, in which the locking lugs 96, 97 can latch when plugging the cover 80.
  • the locking grooves 92, 93 may also be formed as latching openings.
  • the latching grooves 92, 93 are mounted near the front terminal insertion opening 34, respectively, and the snap hooks 90, 91 are mounted near the first narrow side 82 of the cover plate 81. The latching of the cover 80 on the terminal frame 14 takes place in the front part.
  • the locking grooves 92, 93 may also be mounted centrally between the front and the rear terminal insertion opening. The locking of the cover 80 would then be done centrally.
  • an electrical installation device 60 is shown, for example, a circuit breaker, a residual current circuit breaker or the like.
  • the installation switching device device 60 comprises a first housing part 52 and a second housing part 54, which surround the live parts of the service switching device 60.
  • the side facing away from the second housing part 54 of the first housing part 52 is referred to as the first broad side 53 and is hidden in this representation.
  • the side facing away from the first housing part 52 of the second housing part 54 is referred to as the second broad side 55.
  • An attachment side 66 of the installation device 60 is perpendicular to the broad sides 53, 55.
  • the attachment side 66 is configured such that the installation device 60 can be fixed by means of this attachment side 66 to a support rail, not shown here, for example, a DIN rail.
  • the fastening side 66 opposite side of the installation device 60 is referred to as the front 68.
  • the front side 68 comprises a central area, which is referred to as the front front 70, and two adjacent areas, which are set back relative to the front front 70 and are referred to as the rear front 72.
  • the housing parts 52, 54 are designed such that they form a housing insertion opening 62 in the region of the first narrow side 74, through which an electrical connection conductor 58 can be inserted into the interior of the housing of the installation device 60.
  • an electrical connection conductor 58 can be inserted into the interior of the housing of the installation device 60.
  • the terminal conductor 58 is inserted through the housing insertion opening 62 into the front terminal insertion opening 34 of the terminal frame 14 of the screw 10 and clamped there in a known manner.
  • a cover 80 is attached.
  • the cover 80 obscures the portion of the end face of the clamp frame formed by the second transverse leg and extends away from the clamp frame, downwardly in the illustration shown.
  • the remaining parts of the energized terminal frame 14 are of the Housing parts 52, 54 hidden. Thus, no live part of the installation device 60 is visible and touchable from the outside.
  • the terminal frame is provided for a conductor cross-section of 50 mm 2 .
  • the connected terminal conductor 58 has a relatively small cross section of only 6 mm 2 .
  • the second transverse leg In order to firmly clamp this connection conductor 58, the second transverse leg must therefore be positioned relatively close to the clamping screw of the screw terminal. In the illustration shown, the terminal frame and thus the cover 80 is thus relatively high up.
  • the remaining insertion opening 62 has a maximum size. Without additional measures such as the attachment of a cover 80 according to the invention, it would be easily possible to touch the finger with the finger through the insertion opening 62 through the terminal frame.
  • the cover 80 in the illustration shown prevents contact via the plate 81 and the first cover web 84.
  • Fig. 5 is that off Fig. 4 known installation device 60 shown with the housing open.
  • a first housing part 52 receives a screw 10 and a contact strip 56, wherein the screw 10 is arranged on the edge of the first housing part 52.
  • the flat contact strip 56 is positioned so that one end is within the terminal frame 14 of the screw terminal 10, from where the contact strip 56 protrudes into the interior of the housing.
  • the contact strip is mounted fixed relative to the housing halves 52, 54, for example, by being clamped in corresponding grooves which are formed by webs integrally formed on the inside of the housing.
  • the clamping frame 14 is longitudinally displaceably guided in the housing interior parallel to the longitudinal direction of the first narrow side 74 of the housing.
  • a connection conductor 58 is connected to the screw terminal 10.
  • a clamping screw 64 presses on the contact strip 56.
  • the clamping frame 14 is moved upward in the direction of the rear front side 72, so that the connecting conductor 58 between the contact strip 56 and the second transverse leg 26th the clamping frame 14 is clamped.
  • the clamping screw 64 for an operating tool, such as a screwdriver, accessible.
  • an insulating cover 80 is attached, which, as in Fig. 4 already clarified, prevents contact with live parts.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Clamps And Clips (AREA)

Claims (7)

  1. Borne à vis (10) pour appareil d'installation électrique (60) pour le raccordement d'un conducteur de raccordement électrique (58), comprenant un châssis de borne (14) avec une première et une deuxième branche transversale (24, 26), une première et une deuxième branche longitudinale (20, 22), les branches transversales et longitudinales encadrant une ouverture d'insertion de borne avant et arrière (34, 64), la première branche transversale (24) présentant un alésage fileté (28) pour recevoir une vis de serrage (64), et la deuxième branche transversale (26) étant recouverte d'un recouvrement (80) isolant entourant une plaque de fond (81), caractérisée en ce que la plaque de fond (81) porte, au niveau d'un premier et d'un deuxième côté étroit (82, 83), opposés l'un à l'autre, une première et une deuxième nervure de recouvrement respective (84, 85), et en ce que la plaque de fond (81) porte, au niveau d'un troisième et d'un quatrième côté étroit (86, 87), opposés l'un à l'autre, un premier et un deuxième crochet d'encliquetage respectif (90, 91), lesquelles nervures de recouvrement et lesquels crochets d'encliquetage sont orientés perpendiculairement au côté large de la plaque de fond, de telle sorte que lors de l'enfichage du recouvrement (80) sur le châssis de borne (14), la première et la deuxième nervure de recouvrement (84, 85) recouvrent les côtés étroits de la deuxième branche transversale (26) au niveau de l'ouverture d'insertion de borne (34, 64) avant et arrière, et les crochets d'encliquetage (90, 91) s'encliquètent dans des rainures d'encliquetage (92, 93) sur les branches longitudinales (20, 22), ce qui provoque la fixation du recouvrement (80) sur le châssis de borne (14).
  2. Borne à vis (10) selon la revendication 1, caractérisée en ce que la vis de serrage (64) pénètre à travers l'alésage fileté (28) dans le châssis de borne (14), et en ce que le châssis de borne (14) est guidé de manière déplaçable dans sa position installée dans le boîtier de l'appareil de branchement d'installation parallèlement à l'axe médian de la vis de serrage (64), de telle sorte que le conducteur de raccordement (58) puisse être fixé fermement dans le châssis de borne (14).
  3. Borne à vis (10) selon la revendication 1, caractérisée en ce que le contour de la surface de la plaque de fond (81) est adapté au contour de la surface de la deuxième branche transversale (26).
  4. Borne à vis (10) selon la revendication 1, caractérisée en ce que les rainures d'encliquetage (92, 93) sont pratiquées à proximité de l'ouverture d'insertion avant (34).
  5. Borne à vis (10) selon la revendication 1, caractérisée en ce que les rainures d'encliquetage (92, 93) sont pratiquées au centre entre l'ouverture d'insertion avant (34) et l'ouverture d'insertion arrière (64).
  6. Borne à vis (10) selon la revendication 1, caractérisée en ce qu'il est prévu à l'intérieur du châssis de borne (14) une langue de contact (56) sur laquelle presse la vis de serrage (64), et en ce que le connecteur de raccordement (58) peut être fixé fermement entre la deuxième branche transversale (26) et la langue de contact (56).
  7. Appareil de branchement d'installation (60), comprenant au moins une borne à vis (10) selon l'une quelconque des revendications précédentes.
EP10760937.2A 2009-10-17 2010-10-06 Borne à vis avec couvercle et appareil de coupure d'installation Not-in-force EP2489100B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200910049709 DE102009049709A1 (de) 2009-10-17 2009-10-17 Schraubklemme mit Abdeckung und Installationsschaltgerät
PCT/EP2010/006089 WO2011044998A1 (fr) 2009-10-17 2010-10-06 Borne à vis à capot et appareil de commutation d'installation

Publications (2)

Publication Number Publication Date
EP2489100A1 EP2489100A1 (fr) 2012-08-22
EP2489100B1 true EP2489100B1 (fr) 2013-08-14

Family

ID=42990109

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10760937.2A Not-in-force EP2489100B1 (fr) 2009-10-17 2010-10-06 Borne à vis avec couvercle et appareil de coupure d'installation

Country Status (3)

Country Link
EP (1) EP2489100B1 (fr)
DE (1) DE102009049709A1 (fr)
WO (1) WO2011044998A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103296501B (zh) * 2013-05-27 2016-02-03 深圳远征技术有限公司 线材连接器
US9293841B2 (en) 2013-07-10 2016-03-22 Panduit Corp. Mechanical lug with dovetail interlock feature
DE102022205610A1 (de) 2022-06-01 2023-12-07 Siemens Aktiengesellschaft Untersteckschutzteil

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3690165B2 (ja) * 1998-12-22 2005-08-31 松下電工株式会社 ピラー端子
DE10131070B4 (de) * 2001-06-27 2006-10-26 Ellenberger & Poensgen Gmbh Elektrische Schraubklemme
AT500453B8 (de) * 2004-01-27 2007-02-15 Moeller Gebaeudeautomation Kg Liftklemme
EP1983541A1 (fr) 2007-04-19 2008-10-22 Abb Ag Borne à vis et appareil d'installation
ITGE20070130A1 (it) * 2007-12-28 2009-06-29 Gewiss Spa Morsetto perfezionato, particolarmente per interruttori automatici

Also Published As

Publication number Publication date
DE102009049709A1 (de) 2011-04-21
WO2011044998A1 (fr) 2011-04-21
EP2489100A1 (fr) 2012-08-22
WO2011044998A8 (fr) 2012-04-26

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