EP2335319A1 - Appareil de commutation d'installation présentant une vis de serrage - Google Patents

Appareil de commutation d'installation présentant une vis de serrage

Info

Publication number
EP2335319A1
EP2335319A1 EP09737341A EP09737341A EP2335319A1 EP 2335319 A1 EP2335319 A1 EP 2335319A1 EP 09737341 A EP09737341 A EP 09737341A EP 09737341 A EP09737341 A EP 09737341A EP 2335319 A1 EP2335319 A1 EP 2335319A1
Authority
EP
European Patent Office
Prior art keywords
terminal
clamping
clamp
leg
switching device
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
EP09737341A
Other languages
German (de)
English (en)
Other versions
EP2335319B1 (fr
Inventor
Walter Kahl
Klaus Rack
René Claudinon
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 EP2335319A1 publication Critical patent/EP2335319A1/fr
Application granted granted Critical
Publication of EP2335319B1 publication Critical patent/EP2335319B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/36—Conductive members located under tip of screw
    • 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
    • H01R4/301—Clamped connections, spring connections utilising a screw or nut clamping member having means for preventing complete unscrewing of screw or nut
    • 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
    • H01R13/447—Shutter or cover plate
    • 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
    • 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

Definitions

  • the invention relates to a service switching device having a housing, comprising a front side, a mounting side and intermediate narrow sides and Breitsei- th, and with a terminal held in a terminal receiving space of the housing terminal comprising a clamping frame with at least one terminal space in the terminal receiving space perpendicular to the mounting side guided lijnsverschiebiezing, a clamping screw with an actuating end and a clamping end opposite this, which in a threaded opening of the clamping frame between a screwed-in position with the clamp closed and a unscrewed position with the clamp open and can be screwed in, with the Klemmende the terminal screw a terminal cover coupled and thus in the direction of movement of the clamping screw is entrained, which is dimensioned so that it covers the terminal space in touch-safe even when screwed screwed in accordance with d A preamble of claim 1.
  • Generic service switching devices may be in particular circuit breaker, residual current circuit breaker or the like, which may have a housing in shell construction or in pedestal design and latched on its mounting side with locking lugs on standard profile rails of an installation system.
  • the terminal In generic service switching devices is in the delivery state at the customer, the terminal usually not in a defined state. Depending on how it leaves the factory, it may be closed, half open or fully open. When the terminal is halfway or fully open, the terminal frame may reciprocate in the terminal receiving space. If a user of a generic service switching device that installs this in an electrical installation device, for example, snaps into a house distribution box on a hat profile support rail and then connecting connecting conductors or busbars, he must first bring the terminal in a defined opening state. This is an additional step that is laborious.
  • the object is achieved by a generic service switching device with the characterizing features of claim 1.
  • first latching means are arranged on the terminal cover part and second latching means on the housing wall in such a way that they latch together when the clamp is open, thereby preventing the clamping frame from shifting.
  • a fixation of the clamping screw in the open position is thus achieved by means of the terminal cover.
  • the terminal cover part acquires additional functionality, in addition to the functionality of touch-proof covering of the terminal connection space described in WO 2008/052710.
  • the extended functionality is based on the snap-in function.
  • the terminal cover engages in the open position with the housing.
  • the advantage of the invention lies in the creation of a "terminal feniens" without the use of additional parts.
  • Show it: 1 shows a schematic view of the external view of a service switching device according to the invention according to a first embodiment
  • FIG. 2 shows schematically a sectional view of a first embodiment of a connection clamp according to the invention
  • Figure 3 schematically an enlarged view of the clamping frame with the
  • Figure 4 schematically a view on the narrow side of an inventive
  • Installation switching device according to a third embodiment, wherein a housing half shell is removed, with the clamp closed, as well
  • Figure 5 is a schematic view of the narrow side of a service switching device according to the invention according to FIG. 4 with the clamp open.
  • FIG. 1 shows schematically a partial view of a service switching device 1 with a Isolierstoffgeophuse 8 comprising a front front side 2, a rear front side 3, a front side opposite mounting side 4, a front and the rear front connecting the front narrow side 5, the rear front side 3 and the fastening side 4 connecting rear narrow side 6 and two broad sides 7, of which only one in the figure 1 is visible.
  • the service switching device may be, for example, a circuit breaker, a residual current circuit breaker or the like. Inside the insulating material are live parts.
  • connection terminal 10 comprises a terminal screw 24 accessible from the rear front side 3 through a terminal opening 9, as well as a front terminal space 20 and a rear terminal space 21 arranged one behind the other as viewed from the front and through a front 91 and a rear housing opening 92 in FIG the rear narrow side 6 of the housing for the connection of a connecting conductor or a busbar or the terminal lug of a busbar are accessible.
  • the first, front housing opening 91 has an approximately in the longitudinal direction of the rear narrow side 6 extending rectangular contour and serves for the connection of connecting wires. On its side facing the front 2 narrow side, it goes into a window-like opening 11, which extends a little further towards the front side 2 out.
  • the second, rear housing opening 92 is mounted in a channel-shaped shoulder in the rear narrow side 6 and has a transverse rectangular contour. It is intended for clamping the terminal lug of a busbar.
  • the clamping screw 24 is coupled to a terminal cover, which in the longitudinal displacement direction of the clamping screw, see arrow 50, is taken from this and the front terminal space 20 touch safe from the outside.
  • a second leg 66 of this terminal cover part is visible from the outside as shown in FIG. 1 when the device housing is shot. It partly covers the front housing opening 91. To the right and left of the second leg 66 of the terminal cover part, an uncovered area 93 of the front housing opening 91 remains free.
  • the uncovered region 93 is so narrow that it is not possible to reach through the latter with a human finger or a standardized test finger through the front housing opening 91 into the interior of the terminal receiving space and there to touch approximately live parts.
  • the rear housing opening 92 is so narrow that a reaching through with a human or a test finger is effectively prevented.
  • the switching device according to the invention is configured overall safe to touch.
  • FIG. 2 shows a schematic sectional view of an embodiment of a connecting terminal 10 according to the invention.
  • This comprises a clamping frame 12, which can be cylindrical or else with a box-shaped outer contour and has an internal clamping space for receiving the connecting leads to be clamped.
  • the terminal space is closed at the opposite side of the clamping opening 9 by a limiting web 17.
  • the latter In the upper half of the clamping frame 12 facing the terminal opening 9, the latter carries an internal thread 23 into which a clamping screw 24 carrying a corresponding external thread 25 can be screwed in and screwed in the direction of the directional arrow 50 and unscrewed.
  • the terminal screw 24 has an actuating end 26 with a slot 28 for engagement of an actuating tool, such as a screwdriver, and the actuating end 26 opposite terminal end 30, with a connection conductor (not shown here) by pressure against a busbar 36 is clamped.
  • an actuating tool such as a screwdriver
  • the slot 28 may have all possible known configurations or profiles for interaction with a variety of known operating tools, such as a Phillips, a Pozidrive, a Torx profile, but it can also be a combination of different profiles are used.
  • the busbar 36 is mounted fixed to the housing in the interior of the terminal space in the embodiment shown here. It subdivides the terminal space into a front terminal space 20 between the bus bar 36 and the terminal opening 9, and a rear terminal space 21 between the bus bar 36 and the limiting web 17 delimiting the clamping frame 12 towards the fastening side 4.
  • the clamping frame 12 is guided in the terminal receiving space longitudinally displaceable parallel to the narrow side wall.
  • the clamping end of the clamping screw is first pressed against the conductor inserted in the front clamping space and clamps it against the busbar.
  • this is supported to a certain extent on the busbar 36 and the clamping frame 12 is moved upward in the direction of the front, until finally the limiting web 17 in the rear terminal space 21 possibly introduced busbar (not shown here) against the bus bar 36 presses.
  • the above-described principle is also referred to as counter-rotating Zylinderhubklemme.
  • the clamping frame 12 When the clamp is closed, that is, when the clamping screw 24 is screwed and rests against the busbar 36 with its clamping end 30, the clamping frame 12 is fixed to a certain extent on the housing-fixed busbar 36. However, if the clamp is open, the clamping frame 12 can move freely in the clamping receiving space without further measures, a defined position of the clamping frame 12 is then no longer given.
  • the bus bar 36 runs into the interior of the device into a terminal end forming a connection conductor 37, to which further components and assemblies of the installation switching device are connected, for example triggers or contact points.
  • the busbar 36 is bent in a U-shape, so that a curved piece 361 and an adjoining leg 362 extending parallel to the busbar 36 in the rear terminal space 21 are formed. If now the terminal lug of a busbar is inserted into the rear terminal space 21, this is encompassed on both sides by the leg 362 and the limiting web 17, and by tightening the clamping screw 24 a good mechanical and electrical contact is ensured.
  • the terminal screw 24 is in the embodiments shown here, a headless bolt, also called grub screw. This has the advantage that it can be screwed completely into the clamping frame 12 without a head protruding outwards. But of course, a terminal according to the invention could also be designed with a cap screw.
  • terminal screw 24 is screwed with its terminal end 30 on the bus bar 36, as shown in Figure 2, ie without inserted connecting conductor in the front terminal space 20, so would be without further action by the front Housing opening 91 through the shaft of the terminal screw 24 accessible for accidental contact. This is especially true for device variants which have a terminal opening with a large cross section for the connection of conductors with a large conductor cross section.
  • a terminal cover 60 is rotatably riveted to the clamping end 30 of the clamping screw 24.
  • the terminal cover 60 has approximately an L-shape and is rotatably riveted with its first, the short leg 62 with a rivet 31 projecting at the clamping end 30 of the clamping screw.
  • the rotatable riveting is known in principle and can be done in various ways.
  • the first leg carries an opening 34 through which the rivet pin 31 engages, and in the region of the opening 34 a recess 35 is provided.
  • the depression 35 is dimensioned such that it absorbs the beading or compression 33 which arises during riveting at the free end of the rivet stud 31 so that it does not protrude downwards in the direction of a connecting lead to be clamped over the first limb 62.
  • the riveting can be carried out, for example, path-controlled, so that the Nietwulst 33 leaves a certain margin in the contact region with the first leg 62 and thus the clamping screw 24 can rotate relative to the terminal cover 60.
  • the terminal cover part 60 is entrained by the terminal screw 24 when it is screwed in and out.
  • a plate-shaped second leg 66 Approximately perpendicular to the first leg 62 of the terminal cover 60 extends a plate-shaped second leg 66.
  • the plate-shaped leg 66 covers that part of the front terminal space 20, which is above the terminal end 30 of the terminal screw 24, from the side of the front housing opening 91 forth safe from contact. It will now be considered again the figure 1.
  • the terminal 10 of the invention with the terminal cover 60 is mounted so that the plate-shaped second leg 66 of the terminal 60 is guided on the inside of the housing wall in the region of the front housing opening 91 parallel to the course of the rear narrow side 6. As a result, damage to the terminal cover is avoided by improper handling of the installation switching device.
  • a first latching means in the form of a groove 661 is attached on a longitudinal side 662 of the second leg 66 of the terminal cover part 60.
  • a second locking means in the form of a locking lug 112 is attached at a suitable location.
  • the latching nose 112 fits into the groove 661.
  • the clamping screw 24 Since with the terminal cover 60, the clamping screw 24 is connected, and the clamping screw 24 is connected via the thread with the clamping frame 12, so the locking frame 112 with the groove 661 so also the clamping frame 12 is held with the clamp open and can in the Terminal receiving space can not be moved.
  • the terminals are opened during assembly of the device, so that the terminal cover engages in the manner described with the housing.
  • the clamping frame 12 During transport, the removal from the packaging and the insertion into the installation system, the clamping frame 12 then no longer move in the terminal receiving space, and the terminal remains open defined. It can then be used directly the connection conductor. The installer does not have to unscrew the clamp first. As a result, a handle and thus time and money saved in the creation of an electrical installation with a service switching device according to the invention.
  • the terminal cover 60 is made of an insulating material, such as plastic. When the terminal cover part 60 is pressed onto a connection conductor, which is not shown here, the electrical contact between the connection conductor and the clamping screw is produced at the rivet bead 33. In addition, the connection conductor may also partly come into contact with the plastic of the first leg 62.
  • FIG 3. A further embodiment is shown in FIG 3.
  • the terminal cover 60 is designed as a sheet metal angle. Its first leg is rotatably riveted with the clamping screw at the terminal end. The rotatable riveting of the first leg 62 of the terminal cover 60 with the rivet pin takes place in an analogous manner as described above.
  • the locking lug 112 is here attached laterally to the second leg 66 of the sheet metal angle 60. Accordingly, in the inner longitudinal side of the window-like opening into which the second leg 66 of the sheet metal bracket hineinschiebt when opening the terminal, a groove may be present with which the locking lug 112 can lock.
  • the sheet metal angle is covered on the side, which is accessible from the outside in the installed state, covered with an insulating material and thus carries on this side an insulating layer 95th It may be, for example, a sprayed-on plastic layer.
  • the terminal cover is characterized very stable and inexpensive to produce. It can also be seen in FIG. 3 that the second leg 66 of the terminal cover part with the applied insulating layer 95 is narrower than the first leg 62.
  • a guide nose 121 is attached laterally to the frame limb of the clamping frame 12. With this guide nose 121, the clamping frame is guided in a guide groove in the terminal receiving space, which is not shown here, and thus displaceably tied in the terminal receiving space.
  • a second guide nose lies opposite the first guide nose 121 shown here and can not be seen in the illustration of FIG. Figures 4 and 5 show a schematic representation of a plan view of the narrow side 6 of a service switching device according to the invention and again explain the interaction of the terminal cover with the locking means in the inner longitudinal side 111 of the window-like opening 11 of the housing. Identical or equivalent parts are designated by the same reference numerals as in the previous figures.
  • the terminal is closed.
  • the housing is constructed in shell construction, wherein in the illustration of Fig. 4, the left housing shell is omitted, so that an insight into the interior of the terminal is made possible.
  • FIG. 4 and 5 each have a groove 661 on each longitudinal side of the second leg 66 of the terminal cover 6 and on each longitudinal side 111 of the window-like opening 11 each have a latching lug.
  • the terminal cover part 60 When the clamp is open, the terminal cover part 60 is pushed into the window-like opening 11 by the displacement of the clamping screw upwards, and the latching lugs 112 engage with the grooves 661 in the terminal cover part 60.

Landscapes

  • Switch Cases, Indication, And Locking (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)

Abstract

L'invention concerne un appareil de commutation d'installation (1), comprenant un boîtier (8) présentant un côté frontal (3), un côté de fixation et des petits côtés (6) et des côtés larges disposés entre eux. ainsi qu'une borne de connexion (10) située dans un espace de réception de borne du boîtier (8), comprenant un cadre de serrage (12) ayant au moins un espace de serrage (20) qui est guidé, dans l'espace de réception de borne, déplaçable longitudinalement, perpendiculairement au côté de fixation, une vis de serrage (24) présentant une extrémité d'actionnement (26) et une extrémité de serrage (30) opposée à l'extrémité d'actionnement, qui peut être dévissée/vissée dans une ouverture taraudée du cadre de serrage (12), à savoir entre une position vissée lorsque la borne est fermée, et une position dévissée lorsque la borne est ouverte, un couvre-borne (60) étant accouplé avec l'extrémité de serrage (30) de la vis de serrage (24) et, de ce fait, pouvant être entraîné dans le sens du déplacement (50) de la vis de serrage (24), ledit couvre-borne étant dimensionné de façon qu'il recouvre, en assurant une protection contre le contact, l'espace de serrage, même lorsque la vis de serrage est vissée. Un premier moyen d'encliquetage est disposé sur le couvre-borne (60), et un second moyen d'encliquetage est disposé sur la paroi du boîtier, de telle façon  qu'ils s'enclenchent entre eux lors que la borne est ouverte, empêchant ainsi le cadre de serrage de coulisser.
EP09737341A 2008-10-10 2009-09-28 Appareil de commutation d'installation présentant une vis de serrage Not-in-force EP2335319B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008050929A DE102008050929A1 (de) 2008-10-10 2008-10-10 Installationsschaltgerät mit einer Klemmschraube
PCT/EP2009/006967 WO2010040457A1 (fr) 2008-10-10 2009-09-28 Appareil de commutation d'installation présentant une vis de serrage

Publications (2)

Publication Number Publication Date
EP2335319A1 true EP2335319A1 (fr) 2011-06-22
EP2335319B1 EP2335319B1 (fr) 2012-06-27

Family

ID=41461104

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09737341A Not-in-force EP2335319B1 (fr) 2008-10-10 2009-09-28 Appareil de commutation d'installation présentant une vis de serrage

Country Status (3)

Country Link
EP (1) EP2335319B1 (fr)
DE (1) DE102008050929A1 (fr)
WO (1) WO2010040457A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013002009A1 (de) * 2013-02-06 2014-08-07 Abb Ag Installationsschaltgerät mit Anschlussklemme und Klemmenabdeckteil
DE102016111711A1 (de) * 2016-06-27 2017-12-28 Abb Schweiz Ag Installationsschaltgerät mit einem Gehäuse und mit einer Schraubanschlussklemme
DE202018104336U1 (de) 2018-07-27 2018-11-15 Abb Schweiz Ag Elektrisches Installationsgerät mit einer Klemmschraube

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2601513B1 (fr) * 1986-07-09 1988-09-23 Alsthom Cgee Borne de connexion protegee
FR2612340B1 (fr) * 1987-03-13 1993-02-12 Merlin Gerin Borne de raccordement multiple pour appareil electrique modulaire
DE10018353C1 (de) * 2000-04-13 2001-12-20 Siemens Ag Einbaugerät mit einer Klemme und Verfahren zur Montage einer isolierenden Abdeckung
DE102007041650A1 (de) 2006-10-28 2008-04-30 Abb Ag Installationsschaltgerät und Anschlussklemme für ein Installationsschaltgerät

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2010040457A1 *

Also Published As

Publication number Publication date
EP2335319B1 (fr) 2012-06-27
WO2010040457A1 (fr) 2010-04-15
DE102008050929A1 (de) 2010-04-15

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