EP2725600B1 - Appareil de protection contre les basses tensions - Google Patents

Appareil de protection contre les basses tensions Download PDF

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Publication number
EP2725600B1
EP2725600B1 EP20120189791 EP12189791A EP2725600B1 EP 2725600 B1 EP2725600 B1 EP 2725600B1 EP 20120189791 EP20120189791 EP 20120189791 EP 12189791 A EP12189791 A EP 12189791A EP 2725600 B1 EP2725600 B1 EP 2725600B1
Authority
EP
European Patent Office
Prior art keywords
lever
arm
catch
protection device
switching point
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.)
Active
Application number
EP20120189791
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German (de)
English (en)
Other versions
EP2725600A1 (fr
Inventor
Eric Kuttruff
Juerg Pfister
Thomas Busenhart
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 Schweiz AG
Original Assignee
ABB Schweiz AG
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Filing date
Publication date
Application filed by ABB Schweiz AG filed Critical ABB Schweiz AG
Priority to EP20120189791 priority Critical patent/EP2725600B1/fr
Publication of EP2725600A1 publication Critical patent/EP2725600A1/fr
Application granted granted Critical
Publication of EP2725600B1 publication Critical patent/EP2725600B1/fr
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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
    • H01H71/505—Latching devices between operating and release mechanism
    • 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
    • H01H71/505—Latching devices between operating and release mechanism
    • H01H2071/508—Latching devices between operating and release mechanism with serial latches, e.g. primary latch latched by secondary latch for requiring a smaller trip force
    • 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
    • H01H71/58—Manual reset mechanisms which may be also used for manual release actuated by push-button, pull-knob, or slide

Definitions

  • the present invention relates to a low-voltage protection device according to the introductory part of claim 1.
  • the low-voltage protection device prevents electrical accidents and fires in electrical systems and is generally designed as a fault-protected socket or as line or motor protection switch.
  • a designed as a circuit breaker protection device of the type mentioned is in DE 10 2004 055 564 A1 described.
  • This circuit breaker includes a two switching pieces having switching point and a switching mechanism with a serving as a drive knob for manual closing and opening the switch.
  • the driving force generated manually or else by a supercharged drive spring is transmitted to a pivotally mounted, two-armed contact lever via a pivotally coupled to the drive the contact lever has two lever arms, of which the first is pivotally connected to a trained as a flap output member of the rotary joint gear ,
  • the second lever arm carries a movable of the two contact pieces.
  • a latch mechanism acts with a pawl lever on a bracket of the rotary joint mechanism and inhibits the movement of the bracket and thus also acting as the output element tab with closed switching point.
  • EP 0 641 045 B1 describes a designed as a fault-protected socket low-voltage protection device.
  • This protective device includes a housing which accommodates modular units of a socket and a residual current circuit breaker, such as plug contacts, a contact arrangement with at least one switching point formed by two switching pieces, a summation current transformer, a magnetic release, a switching mechanism with a latch having a latch and a test circuit.
  • the switching mechanism has a drive of a movable of the two contact pieces Serving actuator, is transmitted from the driving force via a provided in the switch lock, verklinkbares rotary joint gear on a pivotally mounted contact carrier of the movable contact piece.
  • the object is to provide a low-voltage protection device of the type mentioned, the switching mechanism is characterized by a small footprint.
  • a low-voltage protection device comprising a two switching pieces having switching point and a switching mechanism with a manually operable drive to close and open the switching point, a non-positively coupled to the drive rotary joint gear, a pivotally mounted, two-armed contact lever with two lever arms, of which the first lever arm is pivotally connected to a driven member of the rotary joint gear and the second lever arm carries a movable one of the two contact pieces, and a latch mechanism which inhibits the movement of the driven member when the switch is closed.
  • the latch mechanism includes two pivotally mounted pawls and the output member forming, two-armed latch lever with two lever arms, of which the manual closing of the switch the first lever arm is latched into the first latch and the second lever arm after the notching of the first lever arm from the first pawl in the second latch is latched.
  • the manual closure of the switch can be done in two consecutive phases.
  • the pawl lever can first engage in a first of the two pawls.
  • the manually applied driving force can now be transmitted to the contact lever via the latch lever which can be fixed on the contact lever.
  • the first pawl can be opened and the ratchet lever can be disengaged.
  • the briefly releasable latch lever can now engage in the second latch.
  • a contact spring transmits sufficient contact force on the closed switch and charged for automatic opening of the switch energy storage elements, such as a drive spring and a contact lever spring, the switching mechanism charged with sufficient energy are.
  • a switching mechanism containing the drive, the swivel joint, the pawl mechanism and the contact lever is therefore designed to be extremely compact and has small space dimensions. The properties of the low-voltage protection device therefore remain intact despite reduced geometric dimensions of the switching mechanism.
  • the first pawl may be formed with two arms and be mounted on the contact lever, a first positive connection formed by the first lever arm of the ratchet lever and a first arm of the first pawl can fix the latch lever on manual closing on the contact lever and can after releasing the first positive connection of the second arm of the pawl lever and a first at least two arms of the second pawl form a second releasable when opening the switching point positive engagement.
  • the protective device according to the invention can have a stationary stop cooperating with the first arm of the first pawl for releasing the first positive connection.
  • the second arm of the first pawl can be guided on manual opening of the switching point to the second arm of the second pawl.
  • the swivel linkage may have a pivotally mounted, from the drive and a rechargeable during manual closing of the switching point drive spring drive force acted upon drive member and a with the Drive member hingedly connected coupling member and the articulated with the coupling member latch lever.
  • the coupling element of the rotary joint transmission may be bent in the manner of a banana.
  • the drive may further comprise a manually displaceable for manually opening and closing the switch against the action of a return spring, positively coupled to a drive member of the swivel gear slider, and in the slide a first trigger lever can be pivotally mounted, the Manual opening of the switching point to the first lever arm of the first pawl is feasible.
  • first release lever is designed with two arms, then a first of the two arms can carry a trigger head striking the first arm of the first pawl during manual opening and a stop can be arranged on the slider on which the second arm of the first trigger lever engages when the switch point is closed manually is supportable.
  • the movable contact piece can be mounted pivotably against the force of a contact spring on the second lever arm of the contact lever.
  • the low-voltage protection device may further comprise a current trigger which can be activated by a fault current, a short-circuit current or an overcurrent and which can be guided via a pivotably mounted, resetable second triggering lever directly to the second arm or to a third arm of the second pawl.
  • the mechanical actuator of the current release can be directly guided to the second arm or to a third arm of the second pawl.
  • the switching point 20 is formed by two switching pieces 21 and 22, of which the switching piece 21 is mounted pivotably relative to the force of a contact spring 23 on an arm 62 of the contact lever 60.
  • the switching piece 22 is fixedly held in the housing 10.
  • switching point 20 is the movable Switching piece 21 supported by a contact force formed by the prestressed contact spring 23 on the fixed contact piece 22.
  • the drive 30 has a (not visible in the upper section) guided through the housing 10 actuating button 31 to which a slide 32 held in the housing is attached.
  • the remote from the actuating button 31 end of the slider 32 is supported on a stationary return spring 33.
  • On the slide 32 a pivotable about a held in the slide 30 axis 321, two-armed release lever 34 is mounted.
  • An arm 341 of the trigger lever 34 has a trigger head 342, which cooperates with the latch mechanism 70 when manually opening the switch 20.
  • a stop 322 mounted on the slide 30 ensures that the pivoting range of the release lever 34, which is then temporarily pivoted clockwise in the case of manual closing of the switching point, is limited.
  • the drive spring 40 is supported with a low bias on a fixedly arranged in the housing 10 stop 11 and a bearing 521 of a drive member 52 of the rotary joint gear 50.
  • the drive member 52 is pivotally mounted on the stationary shaft 51 and is acted upon by the drive 30 and the supercharged drive spring 40 with driving force.
  • a banana-shaped bent trained coupling member 53 is pivotally connected at its one end to a lever arm of the drive member 52.
  • the other end of the coupling member 53 is connected to a trained as a pawl 54 output member of the rotary joint gear 50.
  • the output member resp. the pawl lever 54 is pivotally connected via a pivot joint 63 with a lever arm 64 of the contact lever 60.
  • a contact lever spring 66 is supported on a stop 14 fixedly arranged in the housing 10 and a spring stop 65 integrated in the lever arm 62.
  • the latch mechanism 70 includes the pivot lever pivotally mounted on the pivot 63 63, a two-armed pawl 71 pivotally mounted on the arm 64 of the contact lever 60, and a pawl 73 pivotable about a fixed axis 72.
  • the two switching pieces 21, 22 are electrically isolated from each other and the drive spring 40 and the contact lever spring 66 are largely discharged.
  • the actuating button 31 is guided against the force of the return spring 33 upwards in a defined position.
  • the drive member 52 is supported by a force determined by the slightly biased drive spring 40 on the stationary held in the housing 10 stop 11 and is pivotally mounted against the support force in the counterclockwise direction about the axis 51.
  • the movable contact piece 21 and thus also the contact lever 60 are supported at open switching point 20 with a low biasing force on a fixedly arranged in the housing 10 stop 13.
  • the contact lever 60 and thus also the switching piece 21 are mounted counter to the supporting force in a clockwise direction about the axis 61 pivotally.
  • the drive member 52 - and via the rotary joint gear 50 and the contact lever 60 and the movable contact piece 21 - are therefore in a defined position.
  • the two pawls 71 and 73 are also in defined positions and are respectively counter to the force of a non-designated prestressed spring counterclockwise (pawl 71), respectively. pivoted clockwise (latch 73).
  • the actuating button 31 and thus the slider 32 is pressed against the restoring force of the spring 33 down.
  • a transmission is operative, which converts the thrust of the slider 32 in a counter-clockwise pivotal movement of the drive member 52 and at the same time causes the trigger lever 34 is pivoted clockwise.
  • the trigger head 342 is then pivoted to the left, whereas the located above the axis 321 lever arm of the trigger lever 34 is then pivoted to the right and supported on the stop 322.
  • This pivotal movement acts on the coupling lever 53 on the pawl lever 54 and turns it on the pivot 63 in the counterclockwise direction in the Fig. 1 apparent position.
  • first phase rotates (with further rotated counterclockwise drive member 52) of the contact lever 60 in a clockwise direction.
  • the movable contact 21 is brought close to the fixed contact 22 and the switch 20 is not yet closed.
  • the drive spring 40 and the contact lever spring 66 are much more charged than at the beginning of the first phase.
  • the end Fig.2 apparent end of the first phase is determined by a stationary held in the housing stop 12, to which when closing the switch 20 to the left moved arm 711 of the pawl 71 is performed. As in Fig.2 shown, the pawl 71 is then rotated counterclockwise while the positive connection V 1 between the lever arm 711 and the lever arm 541 repealed.
  • the latch lever 54 A attached to its end located above the swivel joint 63 lever arm 542, not designated nose rotates counterclockwise slightly about the pivot 63. hooked with a projection (at the end of Ams 731 Fig.1 ) of the two-armed latch 73 is attached.
  • the manual closing of the switch 20 takes place in two successive phases.
  • the pawl lever 54 initially latches into the pawl 71 pivotally mounted on the contact lever 60.
  • the manually applied driving force is then transmitted to the contact lever 60 via the latch lever 54 fixed to the contact lever when the rotary joint 63 is fixed.
  • the pawl 71 is opened and the latch lever is disengaged.
  • the briefly released latch lever 54 can now latch in the pivotally mounted on the stationary axis 72 pawl 73.
  • the pawl lever 54 may have a much smaller length compared to a pawl lever which is latched in the manual closing of the switch only in a single pawl.
  • a drive mechanism 30, the rotary joint gear 50, the latch mechanism 70 and the contact lever 60 containing switching mechanism is therefore extremely compact and has small space dimensions. The properties of the low-voltage protection device therefore remain intact despite reduced geometric dimensions of the switching mechanism.
  • the trigger head 342 proposes the lever arm 711 of the pawl 71.
  • the pawl 71 is now rotated counterclockwise and strikes with its lever arm 712 on a lever arm 732 of the pawl 73.
  • the pawl is turned clockwise.
  • FIG. 4 apparent power trigger 80 is provided.
  • This current release is activated when a fault current, a short-circuit current or an overcurrent occurs.
  • a mechanical actuator which is typically designed as a ram 81 in the event of a fault or short-circuit current release, shifts as a result of electromagnetic or thermal forces and strikes a pivotably mounted, releasable release lever 82. This lever is rotated counterclockwise, thereby striking a lever arm 733 of the pawl 73 at.
  • a simplified embodiment of the low-voltage protection device is achieved when the lever arm 733 is omitted and the release lever 82 cooperates with the lever arm 732.
  • the release lever 82 can be omitted and the trigger 80 can act directly on the arm 733 or even the arm 732.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Claims (11)

  1. Appareil de protection contre les basses tensions, contenant un point de commutation (20) présentant deux éléments de commutation (21, 22) et un mécanisme de commutation comprenant
    un entraînement à commande manuelle (30) pour fermer et ouvrir le point de commutation (20),
    une transmission à liaison pivotante (50) accouplée par engagement par force à l'entraînement,
    un levier de contact à deux bras (60) monté de manière pivotante, comprenant deux bras de levier (62, 64) dont le premier bras de levier (64) est connecté de manière articulée à un organe de sortie de la transmission à liaison pivotante (50) et le deuxième bras de levier (62) porte un élément de commutation mobile (21) parmi les deux éléments de commutation (21, 22), et comprenant un mécanisme à cliquet (70) qui, lorsque le point de commutation (20) est fermé, bloque le déplacement de l'organe de sortie,
    le mécanisme à cliquet (70) contenant deux cliquets (71, 73) montés de manière pivotante, caractérisé en ce que le mécanisme à cliquet (70) contient en outre un levier à cliquet (54) à deux bras, formant l'organe de sortie, comprenant deux bras de levier (541, 542),
    dont le premier bras de levier (541), lors d'une fermeture manuelle du point de commutation (20), peut être encliqueté dans le premier cliquet (71) et le deuxième bras de levier (542), après le désencliquetage du premier bras de levier (541) hors du premier cliquet (71), peut être encliqueté dans le deuxième cliquet (73).
  2. Appareil de protection selon la revendication 1, caractérisé en ce que le premier cliquet (71) est réalisé avec deux bras et est monté sur le levier de contact (60), en ce qu'un premier engagement par correspondance de forme (V1) formé par le premier bras de levier (541) du levier à cliquet (54) et par un premier bras (711) du premier cliquet (71) fixe le levier à cliquet (54) sur le levier de contact (60) lors de la fermeture manuelle du point de commutation (20) et en ce qu'après le desserrage du premier engagement par correspondance de forme (V1), le deuxième bras (542) du levier à cliquet (54) et un premier (731) d'au moins deux bras (731, 732, 733) du deuxième cliquet (73) forment un deuxième engagement par correspondance de forme (V2) desserrable lors de l'ouverture du point de commutation (20).
  3. Appareil de protection selon la revendication 2, caractérisé en ce qu'il présente une butée fixe (12) coopérant avec le premier bras (711) du premier cliquet (71) pour desserrer le premier engagement par correspondance de forme (V1).
  4. Appareil de protection selon l'une quelconque des revendications 2 ou 3, caractérisé en ce que le deuxième bras (712) du premier cliquet (71), lors de l'ouverture manuelle du point de commutation (20), peut être guidé sur le deuxième bras (732) du deuxième cliquet (73).
  5. Appareil de protection selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la transmission à liaison pivotante (50) présente un organe d'entraînement (52) monté de manière pivotante, pouvant être sollicité par une force d'entraînement par l'entraînement (30) et par un ressort d'entraînement (40) pouvant être chargé lors de la fermeture manuelle du point de commutation (20), ainsi qu'un organe d'accouplement (53) connecté de manière articulée à l'organe d'entraînement (52) ainsi que le levier à cliquet (54) connecté de manière articulée à l'organe d'accouplement (53).
  6. Appareil de protection selon la revendication 5, caractérisé en ce que l'organe d'accouplement (53) de la transmission à liaison pivotante (50) est réalisé sous forme courbée à la manière d'une banane.
  7. Appareil de protection selon l'une quelconque des revendications 5 ou 6, caractérisé en ce que l'entraînement (30) présente un coulisseau (32) pouvant être déplacé en vue de l'ouverture et de la fermeture manuelles du point de commutation (20) à l'encontre de l'effet d'un ressort de rappel (33), accouplé par engagement par force à un organe d'entraînement (52) de la transmission à liaison pivotante (50), et en ce que dans le coulisseau (32) est monté de manière pivotante un premier levier de déclenchement (34) qui, lors de l'ouverture manuelle du point de commutation (20), peut être guidé sur le premier bras de levier (711) du premier cliquet (71).
  8. Appareil de protection selon la revendication 7, caractérisé en ce que le premier levier de déclenchement (34) est réalisé avec deux bras, en ce qu'un premier bras (341) du premier levier de déclenchement (34) porte une tête de déclenchement (342) butant contre le premier bras (711) du premier cliquet (71) lors de l'ouverture manuelle du point de commutation (20), et en ce qu'une butée (322) est disposée sur le coulisseau (34), sur laquelle butée peut être supporté un deuxième bras du premier levier de déclenchement (34) lors de la fermeture manuelle du point de commutation (20).
  9. Appareil de protection selon l'une quelconque des revendications 1 à 8, caractérisé en ce que l'élément de commutation mobile (21) est supporté de manière à pouvoir pivoter à l'encontre de la force d'un ressort de contact (23) sur le deuxième bras de levier (62) du levier de contact (60).
  10. Appareil de protection selon l'une quelconque des revendications 2 à 9, contenant en outre un déclencheur de courant (80) pouvant être activé par un courant de défaut, un courant de court-circuit ou une surintensité, caractérisé en ce qu'un organe d'actionnement mécanique (81) du déclencheur de courant (80) peut être guidé directement, par le biais d'un deuxième levier de déclenchement (82) pouvant être rappelé, et monté de manière pivotante, sur le deuxième bras (732) ou sur un troisième bras (733) du deuxième cliquet (73).
  11. Appareil de protection selon l'une quelconque des revendications 2 à 9, contenant en outre un déclencheur de courant (80) pouvant être activé par un courant de défaut, un courant de court-circuit ou une surintensité, caractérisé en ce qu'un organe d'actionnement mécanique (81) du déclencheur de courant (80) peut être guidé directement sur le deuxième bras (732) ou sur un troisième bras (733) du deuxième cliquet (73).
EP20120189791 2012-10-24 2012-10-24 Appareil de protection contre les basses tensions Active EP2725600B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20120189791 EP2725600B1 (fr) 2012-10-24 2012-10-24 Appareil de protection contre les basses tensions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20120189791 EP2725600B1 (fr) 2012-10-24 2012-10-24 Appareil de protection contre les basses tensions

Publications (2)

Publication Number Publication Date
EP2725600A1 EP2725600A1 (fr) 2014-04-30
EP2725600B1 true EP2725600B1 (fr) 2014-10-15

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107968024B (zh) * 2017-10-29 2020-06-16 默飓电气有限公司 一种断路器操作机构

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3028326A1 (de) * 1980-07-25 1982-03-18 Siemens AG, 1000 Berlin und 8000 München Fehlerstromschutzschalter-steckdose
EP0641045B1 (fr) 1993-08-31 1996-10-16 CMC Carl Maier + Cie AG Prise de courant à protection différentielle
DE19819242B4 (de) * 1998-04-29 2005-11-10 Ge Power Controls Polska Sp.Z.O.O. Thermomagnetischer Leistungsschalter
US6262644B1 (en) * 2000-03-08 2001-07-17 General Electric Company Latch resetting arrangement
DE102004055564B4 (de) 2004-11-18 2022-05-05 Abb Ag Elektrisches Installationsschaltgerät

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