EP1111644B1 - Sicherheitsvorrichtung für elektrisches Gerät - Google Patents

Sicherheitsvorrichtung für elektrisches Gerät Download PDF

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Publication number
EP1111644B1
EP1111644B1 EP99440368A EP99440368A EP1111644B1 EP 1111644 B1 EP1111644 B1 EP 1111644B1 EP 99440368 A EP99440368 A EP 99440368A EP 99440368 A EP99440368 A EP 99440368A EP 1111644 B1 EP1111644 B1 EP 1111644B1
Authority
EP
European Patent Office
Prior art keywords
contact
contacts
assembly according
obturator
lever
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.)
Expired - Lifetime
Application number
EP99440368A
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English (en)
French (fr)
Other versions
EP1111644A1 (de
Inventor
Daniel Hasenfratz
Francis Decker
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.)
Hager Electro SAS
Original Assignee
Hager Electro SAS
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 Hager Electro SAS filed Critical Hager Electro SAS
Priority to DE69915845T priority Critical patent/DE69915845T2/de
Priority to EP99440368A priority patent/EP1111644B1/de
Priority to AT99440368T priority patent/ATE262732T1/de
Publication of EP1111644A1 publication Critical patent/EP1111644A1/de
Application granted granted Critical
Publication of EP1111644B1 publication Critical patent/EP1111644B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/501—Means for breaking welded contacts; Indicating contact welding or other malfunction of the circuit breaker

Definitions

  • the present invention relates to a modular electrical device with a safety device, e.g. differential switches or circuit breakers, and aims to prevent the padlocking of a device when the contacts have been accidentally welded, notably as a result of a short circuit.
  • a safety device e.g. differential switches or circuit breakers
  • Lockout is carried out using a lockout kit to lock the device in one of its positions normal operating, contacts open or closed.
  • This kit applies to the joystick level, which is by therefore stuck in one of its stable positions corresponding to the aforementioned states. It is fixed to the housing of the device electric via at least one orifice made in a disposed ear along the opening in which said lever moves. Activation of the lockout kit, fixing it to the the apparatus by inserting an organ into at least one of said holes, then allows the installation of a padlock which prohibits to remove said kit.
  • the operator then knows in principle the state of the contacts, and can work without any deterioration of this state is to be feared.
  • the threshold force must correspond to a rupture of the internal components of the device, otherwise the abutment offset would be ineffective and ineffective in solving the problem posed.
  • the drum carrying the handle also has a recess which is arranged to coincide with openings in the side walls of the circuit breaker box, to allow padlocking, and whose positions are offset when the contacts are soldered.
  • control handle is blocked at the padlocking when the contacts are soldered to each other.
  • the security device of the invention using other solutions techniques than those that have been exposed, is also much more complete than his predecessors. It does not only perform the main function mentioned, namely to prevent lockout, but it also allows in most configurations a signaling of the real state of the contacts, including understood when welded.
  • the invention relates to devices electrical, in particular modular, comprising at least one movable contact intended to cooperate with at least one corresponding fixed contact, said contact mobile being integral with a contact carrier connected to a control lever rotatable between two stable rest positions, a first position corresponding to the opening of said contacts and a second position corresponding to the closing of the contacts, said lever moving, in an opening made in one face of the housing of the modular device, the long lateral ears provided with at least one orifice intended to allow a padlocking in one or other of the stable positions of the joystick.
  • the security device specific to the invention comprises at least one movable shutter controlled either directly by the movable contact, either by the contact carrier, or even by a mechanism which is linked to one or the other and reflects its displacement, said obturator obstructing the opening in the lateral ear bordering the opening in which the control lever moves when the contacts are soldered, and leaving it clear when the contacts are open or closed.
  • the position of the contact carrier or of the movable contact which therefore determines primarily the position of the shutter (s) relative to the orifices provided for lockout. How the shutter works, and that's where resides the main originality of the device of the invention, is totally independent of that of the control lever. Whatever relative configuration of the contacts, optimally reflected by the moving contact or by the contact carrier, the shutter (s) take a position which is according to said configuration. On one occasion, when the contacts are welded, said position results in closing the installation holes of the kit padlocking.
  • the lever In the case of soldering of the contacts, the lever can on the other hand return to the stop without altering the anti-lockout function, since there is independence between the respective movements of the lever and of the contact carrier, and therefore the shutter.
  • the shutter (s) move preferably in a housing made in at least one of the ears side, provided hollow for this purpose with an opening towards the inside of the modular unit housing.
  • the shutter (s) include a surface visible from the outside of the case when they obstruct the orifice (s) padlocking, signaling that the contacts are soldered.
  • this or these shutters are coupled to means to hide the inscription, appearing at the level of the box the device, indicating that the contacts are closed, in case of welding of said contact.
  • the shutter (s) are movable in rotation around of the axis of rotation of the control handle.
  • the security device of the invention consists of a free annular body rotating around a shaft secured to a drum forming the base of the control handle, said annular body comprising at least on the one hand a protrusion forming a guided shutter in the housing of the lateral ear bordering the opening in which moves said lever, and on the other hand a connecting member to the contact carrier or to connection mechanism to the latter or to the movable contact.
  • the connecting member to the contact carrier is a rod of radial appearance, the end of which cooperates with said contact carrier.
  • This rod connection is then preferably provided, at its free end, with a lug perpendicular to the axis of the rod, in permanent contact with a surface of the contact carrier configured as a ramp, in contact with which said lug can be move 'when the contact carrier moves, transmitting the movement of this last to the shutter.
  • the annular body has another protuberance of radial appearance cooperating elastically with an element fixed to the housing of the device, against which it abuts, forming a spring to hold the end of the connecting rod in contact with the contact carrier.
  • the protrusions forming shutter, spring and rod connection to the contact carrier are in one piece with the annular body central.
  • the part thus defined can be made of plastic, which gives in addition to sufficient elasticity in the spring due to the choice of its shape.
  • the connecting member secured to the annular body forming the base of the device of the invention consists of an arm radial with a lug parallel to the axis of rotation around which is connected pivoting the end of a link, the other end of which is also connected by a pivoting link, to an indicator of the state of the contacts, the displacements are directly caused by movements of contact holders to which it is connected.
  • This indicator indicating through a window in the housing the modular device near the control lever if the contacts are open or closed, consists of a single piece linked to the contact carrier, it is subject to backlash for the purpose of presenting information supra.
  • Their connection can for example be rotary and be carried out using of a pin of the indicator pivoting in a corresponding orifice located in part upper of the contact carrier.
  • the link then transmits the movement to the annular body, one of which upper part constitutes the shutter blocking the lockout hole if the contacts are soldered.
  • the annular body comprises a link arm to a second shutter guided in the same way in a housing made in the second ear disposed laterally to the opening in which the second moves the control lever, the two shutters being arranged symmetrically on either side of said controller.
  • the second shutter then overcomes for example a curvilinear portion placed at the end of said link arm.
  • This can be in one piece with the annular body, or be connected to the latter by insertion of its free end between two radial studs protruding from the external surface of said annular body or in an accommodation in the periphery of the latter.
  • This link arm connecting the two sides of the control lever, a part of the signaling aspect achieved by the invention and previously mentioned responsibility.
  • this arm is straight and disposed relative to the lever so that it can hide the marking on the said handle in the event of contact soldering.
  • this link arm can be arranged at the outside of the drum supporting the joystick, or inside thereof, which then comprises a hollow curvilinear portion over at least the relative stroke lever / link arm.
  • the housings of the modular elements include in many cases a base on which is fixed a cover on which are inscribed the technical indications relating to the product, and at which level the control lever because said cover faces the user when the device is mounted on its rail.
  • FIG. 1 shows a part of a cover (1), in particular revealing an opening (2) in which the control lever moves between two ears (3, 4). These are each provided with a through hole (5, 6) intended for the padlocking, that is to say designed to house a member of the padlocking kit (not shown).
  • a signaling window (7) lets appear a surface which indicates the state of the contacts using a color code: if the surface is green, the contacts are open, while if it is red, the contacts are closed. The substitution of said surfaces will be explained further. detail below, along with the operation of the device the invention itself.
  • Both ears (3, 4) are hollow, as shown in Figure 2, in order to allow the shutters (see Figures 8 and 9) to move there, according to a rotational movement relative to the axis of rotation of the joystick.
  • the differential switch has at least one fixed contact (8) and at least one movable contact (9) integral with a contact carrier (10) pivoting, the latter being connected to the control lever (11) via a mechanism known per se comprising in particular a connecting rod (12) and links (13, 14).
  • This mechanism reflects the position of the joystick control to the contact carrier (10), then to the movable contact (9), and vice versa.
  • the contact carrier (10) has a notch (15) in which takes places the end of a part (16) said to indicate the state of the contacts, pivoting around a shaft (19), and driven by the contact carrier (10) when moves.
  • the indicator piece (16) has a surface (17) arranged at proximity of the cover (1), parallel in appearance to the wall of the latter comprising the opening (2) in which the handle (11) moves, which is movable on the upper surface (18) of a plate fixed to the housing and comprising in particular the pivot shafts (19) of the indicator (16) and (24) of the lever (11).
  • the contact carrier (10) also has a projection (20), one of which edges forms a ramp (21) against which the end of a rod (22) secured to an annular body (23) free to rotate around the shaft (24) of the lever (11).
  • Said annular body (23) has another protuberance of radial appearance which constitutes the shutter (25) because it is guided in the hollow ear (3) and may during its movement obstruct the orifice lockout (5).
  • a third outgrowth (26) emanating from the body annular (23) serves as an elastic spring by pressing against a fixed element (27) to the housing. It keeps the rod (22) in contact with the ramp (21).
  • FIG. 3 shows the contacts (8, 9) welded.
  • Contact holder (10) cannot then pivot correctly, due to the stress exerted on it by the movable contact (9) welded to the fixed contact (8), and the position of the projection (20) and consequently of the ramp (21) give the rod (22) an orientation such that the shutter (25) obstructs the orifice (5).
  • This configuration of the security device of the invention does not include a single shutter (25), as shown in Figure 4, in which the second ear (4 ') is therefore not hollow. Because of the cut, only the drum (28) at the base of the handle (11) appears, the latter not being visible.
  • This view also shows that an orifice (40) can be made, in the ear (3), above the shutter (25), revealing the surface upper of it in case of soldering of the contacts (8, 9).
  • Figure 5 very clearly shows the integration of the the invention in the differential switch. It also highlights the guidance produced by the hollow ear (3) on the shutter (25), which is hidden in this view because the contacts (8, 9) are open, which has the effect of pushing said obturator (25) to the left of the ear (3). Finally, it shows very clearly the interactions between the end of the rod (22) and the ramp (21) via a lug (29), and between the spring (26) and a fixed stud (27).
  • Figures 6 to 8 illustrate a variant of the device described above.
  • this variant involves a link (30) pivoting on the one hand at the level of the body ring (23), and on the other hand on the indicator (16) of the state of the contacts.
  • a short arm (31) provided with a lug (32) allows the pivoting of one of the ends of the link (30).
  • a second similar lug (33) disposed on the indicator (16) allows the pivoting of the second end.
  • the operation is similar to that which has been described in detail with reference to the previous solution: the contact carrier (10) controls the movement of the indicator (16), which in turn drives the rod (30) rotating the annular body (23), and therefore the shutter (25).
  • Two different states of the contacts are shown in figures 6 and 7: open contacts and welded contacts respectively.
  • a link arm (34) connects the annular body supporting the lever (11), said arm (34) being able, moreover, to obscure the marking (OFF) of this when the contacts are soldered.
  • Figures 9 to 12 show another variant, in which there are also a double shutter (25, 25 '), but the link arm (34) is not in this case not permanently fixed to the annular body (23): its free end takes place in a housing (36) provided for this purpose in the periphery of said annular body (23). Disassembly makes it possible to house said link arm (34) inside the drum (28). The marking is then carried out on the tree internal (24) thereof, opposite a window (37) formed in said drum (28). The latter has a curved window (38), which appears on the section of Figure 10, in its left side, of a length allowing the achievement of the shutter stroke (25, 25 '). In case of soldering of the contacts (8, 9), the arm (34) is located behind the window (37), obscuring the marking.
  • Figures 11 to 13 show the three possible stable states for the differential switch taken as an example in the text: open contacts, closed or welded. In all these cases, the position of the shutters is shown, and it can be noted that when the contacts (8, 9) are soldered, it is possible to return the lever (11) to the same position as when the contacts (8, 9) are open, with no particular impact on the components. Only the position of the shutters (25, 25 ') reflects the difference in state of said contacts (8, 9).
  • the shutters can be coated with a color particular, for example red, which makes them immediately identifiable when the contacts are soldered and they appear in the holes (5, 6) through or in an upper orifice (40) of the type shown in figure 4.

Landscapes

  • Switch Cases, Indication, And Locking (AREA)
  • Breakers (AREA)
  • Prostheses (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Claims (15)

  1. Modulares elektrisches Gerät mit Sicherheitsvorrichtung, das ein Gehäuse und wenigstens einen beweglichen Kontakt (9) umfasst, der dazu bestimmt ist, mit wenigstens einem entsprechenden festen Kontakt (8) zusammenzuwirken, wobei der bewegliche Kontakt mit einem Kontaktträger (10) fest verbunden ist, der seinerseits mit einem Steuergriff (11) verbunden ist, der zwischen zwei stabilen Ruhepositionen, einer ersten Position, die den geöffneten Kontakten entspricht, und einer zweiten Position, die den geschlossenen Kontakten entspricht, drehbar ist, wobei sich der Griff in einer Öffnung, die in einer Seite des Gehäuses des modularen Geräts ausgespart ist, längs seitlicher Ansätze (3, 4) verlagert, die mit wenigstens einer Öffnung (5) versehen sind, die dazu bestimmt ist, eine Verriegelung in der einen oder der anderen der stabilen Positionen des Griffs zu ermöglichen, wobei die Sicherheitsvorrichtung dazu vorgesehen ist, die Verriegelung bei einem Verschweißen eines beweglichen Kontakts mit einem festen Kontakt zu verhindern, dadurch gekennzeichnet, dass die Sicherheitsvorrichtung wenigstens einen beweglichen Verschluss (25) umfasst, der entweder direkt durch den beweglichen Kontakt oder durch den Kontaktträger oder aber durch einen Mechanismus gesteuert wird, der mit dem einen oder dem anderen verbunden ist und auf diesen die Verlagerung zurückwirken lässt, wobei der Verschluss die in dem seitlichen Ansatz ausgesparte Öffnung blockiert, die an die Öffnung angrenzt, in der sich der Steuergriff verlagert, wenn die Kontakte verschweißt sind, und sie frei lässt, wenn die Kontakte offen oder geschlossen, jedoch nicht verschweißt sind.
  2. Baueinheit nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass sich der oder die Verschlüsse in einem Aufnahmesitz verlagern, der in wenigstens einem der seitlichen Ansätze ausgespart ist, hierzu hohl ausgebildet ist und eine Öffnung besitzt, die in den Innenraum des Gehäuses des modularen Gerätes mündet.
  3. Baueinheit nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der oder die Verschlüsse eine sichtbare Oberfläche außerhalb des Gehäuses aufweisen, wenn sie die Verriegelungsöffnung(en) blockieren, was angibt, dass die Kontakte verschweißt sind.
  4. Baueinheit nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der oder die Verschlüsse mit Mitteln gekoppelt sind, die eine Aufschrift verbergen, die auf Seiten des Griffs des Gerätes sichtbar ist und angibt, dass die Kontakte offen sind, wenn die Kontakte verschweißt sind.
  5. Baueinheit nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der oder die Verschlüsse um die Drehachse des Steuergriffs rotatorisch beweglich sind.
  6. Baueinheit nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass sie aus einem ringförmigen Körper gebildet ist, der um eine Welle, die mit einer die Basis des Steuergriffs bildenden Trommel fest verbunden ist, frei drehbar ist und einerseits wenigstens einen den Verschluss bildenden Vorsprung, der im Aufnahmesitz dem seitlichen Ansatz, die an die Öffnung angrenzt, in der sich der Griff verlagert, geführt wird, und andererseits ein Verbindungsorgan mit dem Kontaktträger oder dem Mechanismus für die Verbindung mit diesem letzteren umfasst.
  7. Baueinheit nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass das Verbindungsorgan mit dem Kontaktträger ein Stift mit radialem Verlauf ist, dessen Ende mit dem Kontaktträger zusammenwirkt.
  8. Baueinheit nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass der Stift an seinem freien Ende mit einer Nase versehen ist, die mit einer Oberfläche des Kontaktträgers, die als Rampe konfiguriert ist, in ständigem Kontakt ist, wobei sich die Nase in Kontakt mit jener verlagern kann, wenn sich der Kontaktträger bewegt, wodurch seine Bewegung an den Verschluss übertragen wird.
  9. Baueinheit nach einem der Ansprüche 7 und 8, dadurch gekennzeichnet, dass der ringförmige Körper einen weiteren Vorsprung mit radialem Verlauf umfasst, der mit einem am Gehäuse des Gerätes befestigten Element, an dem er anschlägt, elastisch zusammenwirkt und eine Feder bildet, die das Ende des Verbindungsstifts mit dem Kontaktträger in Kontakt hält.
  10. Baueinheit nach einem der Ansprüche 7 bis 9, dadurch gekennzeichnet, dass die den Verschluss bildenden Vorsprünge, die Feder und der Verbindungsstift zusammen mit dem Kontaktträger mit dem mittigen ringförmigen Körper einteilig ausgebildet sind.
  11. Baueinheit nach Anspruch 6, dadurch gekennzeichnet, dass das Verbindungsorgan ein radialer Arm ist, der mit einem Ansatz versehen ist, der zu der Drehachse parallel ist, um das das Ende eines Schwingarms schwenken kann, dessen anderes Ende ebenfalls über eine Schwenkverbindung mit einem Anzeiger des Zustandes der Kontakte verbunden ist, dessen Verlagerungen direkt durch die Bewegungen des Kontaktträgers, mit dem er verbunden ist, hervorgerufen werden.
  12. Baueinheit nach einem der Ansprüche 6 bis 11, dadurch gekennzeichnet, dass der ringförmige Körper einen Verbindungsarm mit einem zweiten Verschluss aufweist, der in einem Aufnahmesitz geführt wird, der in dem zweiten Ansatz ausgespart ist, der seitlich zu der Öffnung angeordnet ist, in der sich der Steuergriff verlagert, wobei die zwei Verschlüsse beiderseits des Griffs symmetrisch angeordnet sind.
  13. Baueinheit nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass der Verbindungsarm mit dem ringförmigen Körper einteilig ausgebildet ist.
  14. Baueinheit nach Anspruch 12, dadurch gekennzeichnet, dass der Verbindungsarm, der mit dem zweiten Verschluss fest verbunden ist, mit dem ringförmigen Körper verbunden ist, indem sein freies Ende zwischen zwei von der äußeren Oberfläche des ringförmigen Körpers vorstehende radiale Kontaktstücke oder in einen im Umfang dieses letzteren ausgesparten Aufnahmesitz eingeführt ist.
  15. Baueinheit nach einem der Ansprüche 12 bis 14, dadurch gekennzeichnet, dass der Verbindungsarm mit dem zweiten Verschluss geradlinig ist und in Bezug auf den Griff in der Weise angeordnet ist, dass er die Markierung, die auf dem Griff angeordnet ist, bei einem Verschweißen der Kontakte verbergen kann.
EP99440368A 1999-12-21 1999-12-21 Sicherheitsvorrichtung für elektrisches Gerät Expired - Lifetime EP1111644B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE69915845T DE69915845T2 (de) 1999-12-21 1999-12-21 Sicherheitsvorrichtung für elektrisches Gerät
EP99440368A EP1111644B1 (de) 1999-12-21 1999-12-21 Sicherheitsvorrichtung für elektrisches Gerät
AT99440368T ATE262732T1 (de) 1999-12-21 1999-12-21 Sicherheitsvorrichtung für elektrisches gerät

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP99440368A EP1111644B1 (de) 1999-12-21 1999-12-21 Sicherheitsvorrichtung für elektrisches Gerät

Publications (2)

Publication Number Publication Date
EP1111644A1 EP1111644A1 (de) 2001-06-27
EP1111644B1 true EP1111644B1 (de) 2004-03-24

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EP99440368A Expired - Lifetime EP1111644B1 (de) 1999-12-21 1999-12-21 Sicherheitsvorrichtung für elektrisches Gerät

Country Status (3)

Country Link
EP (1) EP1111644B1 (de)
AT (1) ATE262732T1 (de)
DE (1) DE69915845T2 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100470435B1 (ko) * 2004-11-04 2005-02-07 새턴정보통신(주) 누전차단기용 조작노브의 자동 리턴 장치
CZ300138B6 (cs) * 2006-01-25 2009-02-18 Oez, S. R. O. Signalizacní ústrojí stavu termomagnetické spoušte, zvlášte u výkonového jistice
CN101510488B (zh) * 2008-02-14 2012-01-11 西门子公司 断路器合闸准备就绪指示件组件

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8019255U1 (de) * 1980-07-18 1980-10-23 Christian Geyer Gmbh & Co, 8500 Nuernberg Elektrischer Installationsschalter und Leitungsschutzschalter
FR2649826B1 (fr) * 1989-07-11 1995-11-24 Merlin Gerin Mecanisme de commande pour disjoncteur electrique
IT1239465B (it) * 1990-04-04 1993-11-02 Cge Comp Gen Elettromecc Mezzi di consenso per il lucchettaggio di dispositivi di comando manuale di apparecchi elettromeccanici
FR2660794B1 (fr) * 1990-04-09 1996-07-26 Merlin Gerin Mecanisme de commande d'un disjoncteur electrique.
DE4222551C2 (de) * 1992-07-09 2001-07-19 Schupa Gmbh Mechanische Schaltknopfsperre für Schaltgeräte mit zusätzlicher Aufnahme für ein Vorhängeschloß
FR2733087B1 (fr) * 1995-04-13 1997-06-06 Schneider Electric Sa Appareil electrique et notamment disjoncteur equipe d'un dispositif de securite

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Publication number Publication date
EP1111644A1 (de) 2001-06-27
DE69915845T2 (de) 2005-03-24
DE69915845D1 (de) 2004-04-29
ATE262732T1 (de) 2004-04-15

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