EP0575216B1 - Verriegelungsvorrichtung für Lastschalter mit Klappdeckel - Google Patents

Verriegelungsvorrichtung für Lastschalter mit Klappdeckel Download PDF

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Publication number
EP0575216B1
EP0575216B1 EP93401415A EP93401415A EP0575216B1 EP 0575216 B1 EP0575216 B1 EP 0575216B1 EP 93401415 A EP93401415 A EP 93401415A EP 93401415 A EP93401415 A EP 93401415A EP 0575216 B1 EP0575216 B1 EP 0575216B1
Authority
EP
European Patent Office
Prior art keywords
flap
button
chassis
feeler
sliding member
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
EP93401415A
Other languages
English (en)
French (fr)
Other versions
EP0575216A1 (de
Inventor
André Cheurlin
José Garcia
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.)
Schneider Electric SE
Original Assignee
Schneider Electric SE
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 Schneider Electric SE filed Critical Schneider Electric SE
Publication of EP0575216A1 publication Critical patent/EP0575216A1/de
Application granted granted Critical
Publication of EP0575216B1 publication Critical patent/EP0575216B1/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
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H01H9/28—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member
    • H01H9/281—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member making use of a padlock
    • H01H9/282—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member making use of a padlock and a separate part mounted or mountable on the switch assembly and movable between an unlocking position and a locking position where it can be secured by the padlock
    • 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
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H01H9/28—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member
    • 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
    • H01H71/62—Manual reset mechanisms which may be also used for manual release with means for preventing resetting while abnormal condition persists, e.g. loose handle arrangement
    • 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
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H01H9/28—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member
    • H01H2009/288—Provisions relating to welded contacts

Definitions

  • the present invention relates to a shutter locking device for an electromechanical circuit breaker.
  • the manual control button can take, in addition to its normal on and off positions, an intermediate position corresponding to the welded state of the contacts. This intermediate position is due to the characteristics of the trigger mechanism interposed between the button and the contacts.
  • the invention aims to take advantage of this intermediate fault position of the manual control button to enhance the security provided by the locking device.
  • the invention relates to a locking device for a circuit breaker comprising in a housing separable contacts, the contacts which can be actuated by a manual control button accessible at the front of the housing and capable of assuming a running position and a normal position. stop; the device comprises a flap which is located in front of the housing which can be folded down towards a safety position preventing the engagement of the button and which can be maintained in this position by at least a padlock or the like.
  • the lockable sliding member comprises the pivoting flap and means are provided for sliding the flap relative to a fixed frame of the device.
  • the lockable sliding member comprises a slide carried and guided by the flap, the slide and the flap having openings appropriate padlock passage, these openings can not be compared when the slide is blocked by the probe.
  • the slide may have retaining or hooking elements on a fixed frame; these elements cooperate with complementary elements of the chassis so that, when the slider is not blocked by the probe, they maintain the slider and its supporting flap and that when in a button inhibition position the slider is blocked by the probe, a spring recalls the shutter-slide assembly in a release position of the button.
  • the circuit breaker partially illustrated in FIG. 1 is a motor protection circuit breaker which comprises, in a housing 10, separable contacts which can be controlled manually by a start button 11 and a stop button 12.
  • the circuit breaker is housed in a box 13 so that the buttons are normally accessible on the front face 14 of the box through a window 15 of the box.
  • triggers 16 sensitive to electrical faults and a reset mechanism capable of opening and closing the contacts 18 depending on the state of the triggers and the position of the buttons.
  • the stop button 12 occupies an erased position 12A visible in FIG. 3 and in dashed lines in FIG. 1.
  • the stop button occupies an output position 12B visible in solid lines in FIG. 1. It may happen that, despite an opening order communicated to the contacts by the mechanism, the contacts are welded and remain closed; the mechanism 17 translates this defect by imposing on the button an intermediate position 12C visible in FIG. 4 and in dashes in FIG. 1.
  • the positions 12B, 12C of the button are therefore characterized by a more or less significant projection of the button from the front face 14 of the housing.
  • the faceplate comprises a fixed frame 30 attached to the box, as well as a pivoting flap 40, carrying a probe 50 and a safety slide 60.
  • the frame 30 includes a frame 31 which surrounds the window 15 and bearings 32 which serve to house the pivots 41 of the pivoting flap 40.
  • the pivoting of the flap 40 takes place around a horizontal axis X between a raised position (FIG. 2 ) where the shutter releases the window 15 and a folded position ( Figures 3 and 4) where the shutter hides the window 15 at least in its parts corresponding to the buttons 11,12. Lugs 33 of the chassis maintain the flap in the folded position under conditions which will be described below, while a return spring 34 biases the flap towards its raised position.
  • the flap 40 is generally planar and has a protruding pocket 42 housing the probe 50, as well as guide elements 43, 44 and abutment for the slide 60. Three openings 45 for the passage of padlocks are formed in a wing. 46 of the flap perpendicular to its flat part.
  • the feeler 50 comprises a feeler element formed by a pusher 51 guided in translation in the pocket 42 and subject to a compression spring 52.
  • the translation position of the pusher is obviously a function of the position and the direction of movement of the button 12.
  • the pusher 51 has a wide zone 53 for blocking the slider 60, a narrow zone 54 allowing the displacement of the slider and a shoulder 55 which ensures its abutment against the slider under the effect of the spring 52.
  • the safety slider 60 is generally planar and includes slots 61 cooperating with the guide elements 43 provided on the flap 40, as well as a window 62 allowing assembly with the flap 40.
  • the window 62 has in particular a zone 63 the width of which is intermediate between that of the narrow part 54 and that of the wide part 53 of the pusher.
  • Three passage openings 65 for padlocks are provided in a wing 66 of the slide perpendicular to its flat part.
  • the wing 66 is parallel and adjoining the wing 46 of the flap.
  • Fingers 67 or other hooking elements are provided on the slide to engage under the lugs 33 of the fixed frame, in order to maintain the shutter-slide assembly in the safety position illustrated in FIGS. 3 and 5.
  • the faceplate described operates in the following manner.
  • the operator wants to padlock the device, he rotates the flap 40 carrying the slider 60 to the folded position ( Figure 6), then tries to slide the slider against the flap according to arrow F ( Figures 2 and 6).
  • the button 12 has previously been put in the stop position; if this is not the case, the pusher 51 presses the button and puts it in the stop position, the force of the spring 52 being chosen to be greater than the resistant force of the button.
  • the narrow part 54 of the probe is at the level of the plane of the slide and the latter can therefore come to the safety position of FIG. 5; the openings 45 and 65 coincide and make it possible to engage the padlocks 68 to lock the circuit breaker.
  • the operator can no longer operate the buttons which are hidden by the shutter-slider assembly. If the contacts remain welded, as a result of an incident, the wide part 53 of the pusher 51 remains at the level of the plane of the slide and therefore obstructs its passage.
  • the fingers 67 cannot engage under the lugs 33, so that on the one hand the openings 65 cannot come opposite the openings 45 and that, on the other hand, the shutter-slide assembly is recalled by the spring 34 in its raised position (in dashes in FIG. 3). It will be noted that, during operation, the probe remains inaccessible and the force exerted on the faulty button remains limited to that provided by the spring of the probe.
  • the flap is pivotally mounted about an axis X and sliding perpendicular to this axis, so that there is no longer any need to use a specific slide.
  • the shutter 70 is mounted on a frame 30 so as to pivot about a horizontal axis located below the window 15 and this by means of pivots 71 each provided with a flat 71a.
  • the chassis 30 comprises lugs 35 projecting perpendicularly to the front plane of the box 13; the lugs 35 each comprise an opening 36, with a function similar to that of the openings 45 previously described, for receiving respective padlocks 68.
  • the flap 70 is returned to its low rest position (FIGS. 8 and 10) by a tension spring 37
  • the pivots 71 of the shutter 70 are arranged so as to be able to slide in slides formed by vertical lateral grooves 38 formed in ribs 39 in front of the chassis 30.
  • the shutter 70 is able to pivot and slide while tensioning the spring 37.
  • the shutter 70 has a fixed feeler 80 provided with a ramp 81 for cooperating with the stop button 12 of the circuit breaker.
  • the probe 80 could also be movable and include an associated spring determining the pressure force exerted on the button 12.
  • the flap 70 On the side opposite to the probe, the flap 70 carries tabs 72 provided with openings 73 for passage for the padlocks.
  • the operator successively rotates the flap 70 in the direction of arrow G to bring it from the rest position of Figures 8 and 10 to the folded position or cover position of Figure 11, position in which the padlocks can not yet be mounted.
  • the flats 71a of the pivots 71 thus pass from a biased position which prevented the sliding of the flap (see in dashes in FIG. 13) to a vertical position which allows this sliding.
  • it goes up the shutter according to arrow H to slide the flats 71a to their high stop position in the grooves 38 ( Figures 9 and 12), position in which the openings 36 and 73 coincide. If the contacts are open, the probe does not encounter any obstacle during its sliding.
  • the probe abuts on the button and prevents the flap from coming into the lockout position of FIGS. 9 and 12. It is observed that, in the positions Figures 11 and 12, the flap is applied in abutment on surfaces 74 of the frame and that, to pass from the position of Figure 11 to that of Figure 12, the flap must engage under a heel - or more heels holding - 75 and this by a wall element 76; this forces the shutter to a precise positioning and to a movement strictly parallel to itself and accentuates the inviolability of the device by preventing forcing of the rotating button.
  • the pivoting flap can slide parallel to its axis of rotation; a torsion spring with non-contiguous turns then ensures the return of the flap to its rest position by translation then rotation.
  • the welding of the contacts is then carried out by cooperation of the probe with a lateral face of the control button.
  • the flat pivots 77 of the shutter can pivot (arrow G) and slide (arrow H) in cylindrical holes 78 of the bearings 79 of the chassis, while the guide of the shutter in elements of shape, for example grooves 80 of the bearings, prevent pivoting during sliding and sliding during pivoting.
  • the flap can pivot around another axis parallel to the front face of the housing, in particular a vertical axis.
  • a lever can be associated with the probe to amplify its movement.
  • the circuit breaker can have a single manual control button and the probe can move parallel to the front face of the box.
  • chassis must be understood broadly; the chassis is removably attached to the cabinet or can be constituted by an irremovable part of the cabinet.

Landscapes

  • Switch Cases, Indication, And Locking (AREA)
  • Breakers (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)

Claims (8)

  1. Verriegelungsvorrichtung für Schutzschalter mit einem Gehäuse (10) für trennbare Kontakte (18), wobei letztere durch einen Handbedienknopf (12) betätigt werden können, der von außen auf der Vorderseite des Gehäuses zugänglich ist und eine Einschalt- sowie eine Ausschaltposition einnehmen kann, wobei die Vorrichtung eine schwenkbare Klappe (40) aufweist, die sich vor dem Gehäuse (10) befindet und in eine Sicherheitsstellung, in der der Handbedienknopf (12) nicht betätigt werden kann, abgeklappt und in dieser Stellung mit mindestens einem Vorhängeschloß (68) oder ähnlichen Bauteil gesichert werden kann,
    dadurch gekennzeichnet, daß sie
    - einen Abtaster (50 ; 80) besitzt, der von der schwenkbaren Klappe (40 ; 70) getragen wird und eine Zwischenstellung des Handbedienknopfes (12) im Falle einer Störung erkennen kann,
    - ein verschiebbares Bauteil (60 ; 70) besitzt, das der schwenkbaren Klappe zugeordnet ist und mit dem Abtaster bei Erkennung der o.a. Zwischenstellung blockiert werden kann, sodaß die Klappe nicht mit einem Vorhängeschloß gesichert werden kann.
  2. Verriegelungsvorrichtung nach Patentanspruch 1, dadurch gekennzeichnet, daß sie einen festen Träger (30) und das verschieb- und blockierbare Bauteil die schwenkbare Klappe (70) aufweist, wobei Mittel (38) zum Verschieben der Klappe auf dem Träger vorgesehen sind.
  3. Verriegelungsvorrichtung nach Patentanspruch 1, dadurch gekennzeichnet, daß die Drehzapfen (71, 77) der Klappe mit Schienen (38, 78) zusammenwirken, die zum Träger gehören und parallel zur Vorderseite (14) des Gehäuses verlaufen.
  4. Verriegelungsvorrichtung nach Patentanspruch 2, dadurch gekennzeichnet, daß die Klappe (70) beim Verschieben unter mindestens einen zum Träger gehörenden Absatz (75) zum Festhalten der Klappe geschoben wird.
  5. Verriegelungsvorrichtung nach Patentanspruch 1, dadurch gekennzeichnet, daß sie einen festen Träger (30) und das verschieb- und blockierbare Bauteil einen von der Klappe (40) gehaltenen und geführten Schieber (60) aufweist, der Finger o. ä. Bauteile (67) zum Einhaken am Träger besitzt, die jedoch nicht einhaken können, wenn der Schieber vom Abtaster (50) blockiert ist.
  6. Verriegelungsvorrichtung nach Patentanspruch 1 bis 5, dadurch gekennzeichnet, daß das verschieb- und blockierbare Bauteil (60 ; 70) und der Träger (30) geeignete Öffnungen (65, 45 ; 73, 36) zum Anbringen von Vorhängeschlössern aufweisen, wobei diese Öffnungen nicht übereinander zu liegen kommen können, wenn das verschiebbare Bauteil vom Abtaster (50 ; 80) blockiert ist.
  7. Verriegelungsvorrichtung nach Patentanspruch 1 bis 6, dadurch gekennzeichnet, daß die Klappe (40 ; 70) von einer Rückholfeder in eine Stellung zurückgebracht wird, in der der Handbedienknopf(12) freigelegt ist.
  8. Verriegelungsvorrichtung nach Patentanspruch 1 bis 7, dadurch gekennzeichnet, daß der Abtaster (50) einen Drucktaster (51) aufweist, der mit einer Feder (52) unter Druckbeanspruchung gesetzt wird, mit der die auf den Handbedienknopf(12) ausgeübte Kraft bestimmt wird.
EP93401415A 1992-06-18 1993-06-02 Verriegelungsvorrichtung für Lastschalter mit Klappdeckel Expired - Lifetime EP0575216B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9207408A FR2692717B1 (fr) 1992-06-18 1992-06-18 Dispositif de verrouillage a volet pour disjoncteur.
FR9207408 1992-06-18

Publications (2)

Publication Number Publication Date
EP0575216A1 EP0575216A1 (de) 1993-12-22
EP0575216B1 true EP0575216B1 (de) 1996-01-10

Family

ID=9430885

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93401415A Expired - Lifetime EP0575216B1 (de) 1992-06-18 1993-06-02 Verriegelungsvorrichtung für Lastschalter mit Klappdeckel

Country Status (6)

Country Link
EP (1) EP0575216B1 (de)
JP (1) JPH0676725A (de)
KR (1) KR970006435B1 (de)
CN (1) CN1033834C (de)
DE (1) DE69301278T2 (de)
FR (1) FR2692717B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19522049C2 (de) * 1995-06-17 2001-04-26 Hager Electro Gmbh Mechanische Sicherungsvorrichtung gegen Verschwenken des Schalthebels eines Leitungsschutzschalters

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19843207A1 (de) * 1998-09-16 2000-03-23 Siemens Ag Bedienungspult für einen Leistungsschalter
JP7101701B2 (ja) * 2017-11-17 2022-07-15 株式会社荏原製作所 ブレーカ用ロックアウトキー取付具

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3186981A (en) * 1962-03-26 1965-06-01 Ryan Aeronautical Company Push button switch override clip
FR2378345A1 (fr) * 1977-01-24 1978-08-18 Merlin Gerin Disjoncteur electrique a poignee rotative a grand angle de deplacement
FR2390569A1 (fr) * 1977-05-09 1978-12-08 Hazemeyer Sa Dispositif pour le cadenassage d'un appareil electrique
US4260861A (en) * 1979-07-30 1981-04-07 Gould Inc. Handle locking means for circuit breaker
FR2609208A2 (fr) * 1986-04-08 1988-07-01 Telemecanique Electrique Dispositif cadenassable pour commander un interrupteur

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19522049C2 (de) * 1995-06-17 2001-04-26 Hager Electro Gmbh Mechanische Sicherungsvorrichtung gegen Verschwenken des Schalthebels eines Leitungsschutzschalters

Also Published As

Publication number Publication date
FR2692717A1 (fr) 1993-12-24
FR2692717B1 (fr) 1997-01-31
KR970006435B1 (ko) 1997-04-28
JPH0676725A (ja) 1994-03-18
EP0575216A1 (de) 1993-12-22
DE69301278T2 (de) 1996-07-04
DE69301278D1 (de) 1996-02-22
CN1080089A (zh) 1993-12-29
CN1033834C (zh) 1997-01-15
KR940001218A (ko) 1994-01-11

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