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EP0444010B1 - Schaltschloss für einen Fehlerstromschutzschalter - Google Patents

Schaltschloss für einen Fehlerstromschutzschalter Download PDF

Info

Publication number
EP0444010B1
EP0444010B1 EP19910890024 EP91890024A EP0444010B1 EP 0444010 B1 EP0444010 B1 EP 0444010B1 EP 19910890024 EP19910890024 EP 19910890024 EP 91890024 A EP91890024 A EP 91890024A EP 0444010 B1 EP0444010 B1 EP 0444010B1
Authority
EP
European Patent Office
Prior art keywords
switch latch
release
permanent
restoring lever
switch
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
EP19910890024
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0444010A3 (en
EP0444010A2 (de
Inventor
Gerhard Ing. Amon
Gerhard Schuh
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.)
Felten & Guilleaume Fabrik Elektrischer Apparate A
Original Assignee
Felten & Guilleaume Fabrik Elektrischer Apparate AG
Felten and Guilleaume Austria AG
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 Felten & Guilleaume Fabrik Elektrischer Apparate AG, Felten and Guilleaume Austria AG filed Critical Felten & Guilleaume Fabrik Elektrischer Apparate AG
Publication of EP0444010A2 publication Critical patent/EP0444010A2/de
Publication of EP0444010A3 publication Critical patent/EP0444010A3/de
Application granted granted Critical
Publication of EP0444010B1 publication Critical patent/EP0444010B1/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
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H01H71/528—Manual reset mechanisms which may be also used for manual release actuated by lever comprising a toggle or collapsible link between handle and contact arm, e.g. sear pin 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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/32—Electromagnetic mechanisms having permanently magnetised part
    • 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
    • H01H71/1072—Release mechanisms which are reset by opening movement of contacts

Definitions

  • the invention relates to a switch lock for a residual current circuit breaker with a pivotably mounted actuating button, which can be coupled at least directly to movable contacts of a contact apparatus, with a pivotally mounted pawl coupled to the actuating button, which is assigned a spring-loaded pawl support which is pivotally mounted in the switching lock and which Trigger plunger of a permanent magnet trigger is assigned, with a reset lever pivotally mounted on the switch lock, which is loaded by a spring in the direction of the return of the trigger plunger of the permanent magnet trigger, and which is arranged in the "ON" position of the actuation button at a distance from the trigger plunger of the permanent magnet trigger.
  • the invention has for its object to provide a switch lock of the type mentioned above, in which a reliable resetting of the permanent magnet release provided in the residual current circuit breaker is possible without impairing the tripping behavior.
  • the reset lever is a two-armed lever, one arm of which is assigned to the actuating plunger of the permanent magnet release and of which the second arm is assigned to the actuation button, in that the actuation button has a control cam which is directly assigned to one arm of the reset lever and which, in the "ON" position of the actuating button, holds the reset lever in a pivoted position in which its arm assigned to the trigger plunger of the permanent magnet trigger is arranged outside the range of movement of the trigger plunger.
  • the other components of the switch lock can be designed so that an optimal release behavior is achieved.
  • the required movements of the reset lever are achieved in a particularly simple manner in the invention, since the actuating button has a control cam which is assigned to one arm of the reset lever.
  • the reset lever is pivotally mounted about an axis attached to a lock plate of the switch lock.
  • the lock plate of the switch lock on the side of which the permanent magnet release is arranged and the reset lever is mounted, is of stepped construction, the switch lock being narrower in the area of the permanent magnet release than in the area of the actuating button .
  • This embodiment has the advantage that the actuation button can be made wide for problem-free operation by hand without the switch lock being too wide overall, since the permanent magnet release is arranged in the narrower area of the switch lock.
  • a particularly favorable spatial arrangement of the reset lever in the switch lock according to the invention is obtained if the reset lever projects through a slot arranged in the area of the step of the stepped lock plate of the switch lock.
  • This embodiment also has the advantage that the reset lever on its bearing pin without special measures is held because the reset lever is guided with one of its arms in the slot.
  • the end of the slot located away from the reset lever lies outside the pivoting range of the arm of the reset lever facing the actuating button.
  • the reset lever is placed on its bearing bolt for assembly and then pivoted under the action of the spring assigned to it so that its arm assigned to the actuating button reaches through the slot.
  • the spring loading the reset lever is supported with its one leg on the step of the stepped lock plate of the switch lock, that the spring is guided in possibly several turns around the axis of the reset lever and that the other leg the spring rests on a tongue protruding from the reset lever.
  • This embodiment which ensures a sufficiently strong load on the return lever, also forms the basis for an embodiment in which the free end of the tongue protruding from the return lever is bent and has a hole into which the axis of the return lever engages.
  • the reset lever is not only passed through a hole provided in it, but also through the hole provided on the free end of the bent tongue on its bearing bolt.
  • a favorable spatial arrangement and a problem-free actuation of the reset lever by the control cam on the actuation button results if it is provided that the arm of the reset lever, on which the control cam of the actuation button engages, is bent.
  • Another feature of the invention also works in this sense, according to which the arms of the return lever enclose an obtuse angle with one another.
  • the free end of the arm of the reset lever which is assigned to the trigger plunger of the permanent magnet trigger, is angled away from the lock plate. It is preferred that a tongue pointing towards the release plunger is provided at the end of the angled part of the arm.
  • the attachment of the permanent magnet trigger to the switch lock is particularly simple in one embodiment of the invention, which is characterized in that the permanent magnet trigger has at least two projecting pins on its wall of the housing facing the switch lock, which engage in holes in the stepped lock plate of the switch lock.
  • the permanent magnet release on the lock plate of the key switch is fixed by a spring clip, preferably a wire spring clip.
  • An undesirable slipping of the spring clip can be prevented by engaging the spring clip with a bend at the end of its leg resting on the wall of the permanent magnet release facing away from the switch lock in a hole in this wall. It can also be provided that a corresponding bend or offset is also provided on the leg of the spring resting on the one lock plate of the key switch.
  • a switch lock 1 is used in residual current circuit breakers in order to trigger the contacts 5 in the "ON" position on fixed contacts 3 on movable switching bridges 7 of the contact apparatus under the action of a shaft carrying the switching bridges 7 in the event of tripping Suddenly lift off the spring.
  • a permanent magnet release 11 is assigned to the switch lock 1, which in the event of a trip (in the total current transformer of the residual current circuit breaker is a Current induced, which triggers the permanent magnet trigger 11) adjusts the coupling elements of the switch lock such that the movable switching bridges 7 are removed under the action of the spring mentioned above from the fixed contacts 3 fixed in the housing and suitably combined with terminals 13.
  • the switching lock 1 consists of two lock plates 14 and 15, of which the rear lock plate 14 in FIGS. 1 to 5 is essentially flat.
  • the other lock plate 15 removed in FIGS. 1 and 2 is cranked so that between the lock plates 14 and 15 there is a narrow space 17 and a wide space 19.
  • an actuating button 20 is pivotally mounted about an axis 21 fastened in the lock plates 14 and 15 and is supported by a button spring, one end of which engages in a recess in the cranked lock plate 15, into which 1 and 3 shown "OFF" position charged.
  • the lock mechanism consists of a button flap 25 which is pivotally coupled to the actuating button 20 by means of a pin bolt 23 and which is connected in an articulated manner via a hinge pin 27 to a latch plate 29 and to a roller plate 31.
  • the roller bracket 31 is coupled by a further hinge pin 33 to the shaft 9 which carries the movable switching bridges 7 and which is pivotably mounted in the housing of the residual current circuit breaker against the force of a spring.
  • the pawl tab 29 is coupled to a pawl 37 which can be pivoted about a rivet pin 35 in the switching lock 1 by means of a further articulated pin 39.
  • the rivet bolt 35 is fastened in the lock plates 14 and 15.
  • the free end 41 of the pawl 37 is assigned to a pawl support 43, which is provided by a support spring assigned to it 45 in the sense of pivoting about a bolt 44, which is fastened in the lock plates 14 and 15, is loaded in a clockwise direction (FIG. 1).
  • the support spring 45 is a leg spring which is wound in several turns around a rivet bolt 47 and which is supported at one end on the flat lock plate 14.
  • the rivet bolt 47 also serves to connect the two lock plates 14 and 15 together. This also applies to the rivet bolt 35 about which the pawl 37 can be pivoted.
  • the pawl support 43 is a two-armed, angled lever, on one lever arm of which a support surface 49 for the free end 41 of the pawl 37 is formed.
  • the other arm of the pawl support 43 carries an angled extension 50 which projects through a curved, slot-shaped recess 51 in the upper lock plate 15.
  • the projection 50 is assigned to the trigger plunger 53 of the permanent magnet trigger 11.
  • a reset 55 is pivotally mounted on the switching lock 1 on its cranked lock plate 15 about a bearing pin 57.
  • the reset 55 is designed as a two-armed lever and is loaded by a return spring 59, which is supported with its one leg 61 on the lock plate 15 in the region of its offset 16, in the sense of pivoting counterclockwise.
  • the other leg 62 of the return spring 59 is supported on a tongue 63, which is preferably formed in one piece with the reset 55 and whose free end 65 has an opening through which the bearing pin 57 is inserted.
  • One arm 67 of the reset 55 is assigned to the plunger 53 of the permanent magnet release 11.
  • the other arm 69 of the reset 55 which forms an obtuse angle with the arm 67 assigned to the trigger plunger 53, is in turn angled and assigned to the actuating button 20.
  • the arm 69 of the reset lever 55 engages through a slot 71 in the lock plate 15, which is formed in the region of the first bend adjacent to the narrower space 17 thereof.
  • a control cam 22 is formed on the actuating button 20, which engages on the arm 69 of the resetter 55 in the "ON" position of the actuating button 20 shown in FIGS. 2 and 4.
  • the reset 55 is pivoted into the position shown in FIG. 4, in which the end of its arm 67 is so far away from the release plunger 53 of the permanent magnet release 11 that it can be pushed out freely from the permanent magnet release 11 in the direction of arrow 54 in the event of a release .
  • the actuating button 20 When the key switch 1 is triggered, the actuating button 20 also pivots under the action of the button spring provided in it into the position shown in FIGS. 1 and 3, in which its control cam 22 no longer acts on the arm 69 of the reset 55 and this under the action of Return spring 59 in that shown in Fig. 3 Position is pivoted and thereby pushing the release plunger 53 back, whereby the armature of the permanent magnet release 11 is moved back into its initial position held by the permanent magnet (shown in FIGS. 3 and 4) (the permanent magnet release can advantageously be the one from AT-PS 378 862 and AT-PS 381 599 have known construction).
  • the bearing pin 57 need not have any special security against falling of the reset 55, since this is guided in the slot 71 with sufficient precision and to move in the direction of the axis of the bearing pin 57 is prevented.
  • the reset 55 can be pivoted clockwise so far that the free end of its arm 69 is no longer accommodated in the slot 71 (it then lies below the step 16 in the lock plate 15), whereupon the reset 55 is simply removed from the bearing pin 57 can be deducted.
  • the assembly is carried out in the reverse order.
  • the free end 73 of the arm 67 of the reset 55 which engages or is assigned to the release plunger 53 of the permanent magnet release 11, is bent up from the plane of the drawing in FIGS. 3 and 4 and has an extension 75 pointing towards the release plunger 53.
  • the permanent magnet release 11 has on its side, not visible in FIGS. 3 and 4, facing the switch lock 1, at least two locking projections which engage in holes in the lock plate 15.
  • the position of the permanent magnet release 11 on the switching lock 1 and thus also in relation to the extension 50 of the pawl support 43 and the end 73, 75 of the reset 55 is precisely defined and it is sufficient to fix the permanent magnet release 11, for example with the aid of a spring clip 77.
  • a thigh 79 rests on the side of the permanent magnet release 11 visible in FIGS. 3 and 4 and the other leg 80 rests against the lock plate 15 from the inside.
  • a depression or a hole can be provided in the permanent magnet release 11 on the side visible in FIGS. 3 and 4, in which a bent or bent-down end of the leg 79 of the spring clip 77 engages.
  • a similar securing of position can also be provided on the other leg 80 of the spring clip.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Push-Button Switches (AREA)
EP19910890024 1990-02-19 1991-02-13 Schaltschloss für einen Fehlerstromschutzschalter Expired - Lifetime EP0444010B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT37890A AT404771B (de) 1990-02-19 1990-02-19 Schaltschloss für einen fehlerstromschutzschalter
AT378/90 1990-02-19

Publications (3)

Publication Number Publication Date
EP0444010A2 EP0444010A2 (de) 1991-08-28
EP0444010A3 EP0444010A3 (en) 1992-05-13
EP0444010B1 true EP0444010B1 (de) 1995-01-11

Family

ID=3489003

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910890024 Expired - Lifetime EP0444010B1 (de) 1990-02-19 1991-02-13 Schaltschloss für einen Fehlerstromschutzschalter

Country Status (11)

Country Link
EP (1) EP0444010B1 (cs)
AT (1) AT404771B (cs)
AU (1) AU636708B2 (cs)
CZ (1) CZ279385B6 (cs)
DE (1) DE59104185D1 (cs)
ES (1) ES2070482T3 (cs)
HU (1) HU208881B (cs)
PL (1) PL164308B1 (cs)
PT (1) PT96801B (cs)
SK (1) SK278581B6 (cs)
TR (1) TR25103A (cs)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109686628A (zh) * 2019-01-22 2019-04-26 浙江明晖智能电气有限公司 一种塑壳断路器
CZ309177B6 (cs) * 2006-04-07 2022-04-20 HESS R&D, s.r.o Vypínač

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19654469A1 (de) * 1996-12-27 1998-07-02 Maier & Cie C Fehlerstrom-Schutzschalter
IT1311069B1 (it) * 1999-03-04 2002-02-28 Abb Ricerca Spa Dispositivo di sgancio per l'apertura dei contatti di uninterruttore ad esso associato
AT503871B1 (de) * 2003-04-16 2008-08-15 Moeller Gebaeudeautomation Kg Elektrisches gerät
DE102011003801A1 (de) * 2011-02-08 2012-08-09 Siemens Aktiengesellschaft Fehlerstromschutzschalter

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2003328C3 (de) * 1970-01-26 1973-09-20 Starkstrom-Schaltgeraetefabrik E. Spindler & O. Deissler, 5277 Rodt Ein- oder mehrphasiger Motorschutzschalter
FR2434473A1 (fr) * 1978-08-25 1980-03-21 Legrand Sa Disjoncteur a contact mobile articule par pivot a un organe d'accrochage lui-meme mobile
FR2574983B2 (fr) * 1984-12-18 1988-09-23 Socomec Sa Mecanisme de rearmement automatique du declencheur pour interrupteur a translation a enclenchement et a teledeclenchement brusques
JPS59189529A (ja) * 1983-04-13 1984-10-27 株式会社日立製作所 配線用遮断器

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ309177B6 (cs) * 2006-04-07 2022-04-20 HESS R&D, s.r.o Vypínač
CN109686628A (zh) * 2019-01-22 2019-04-26 浙江明晖智能电气有限公司 一种塑壳断路器

Also Published As

Publication number Publication date
DE59104185D1 (de) 1995-02-23
HU910440D0 (en) 1991-08-28
SK278581B6 (en) 1997-10-08
EP0444010A3 (en) 1992-05-13
ES2070482T3 (es) 1995-06-01
AU7111191A (en) 1991-08-22
AT404771B (de) 1999-02-25
HUT56658A (en) 1991-09-30
EP0444010A2 (de) 1991-08-28
CS9100422A2 (en) 1991-09-15
AU636708B2 (en) 1993-05-06
PT96801B (pt) 1998-08-31
TR25103A (tr) 1992-11-01
ATA37890A (de) 1998-06-15
PL164308B1 (pl) 1994-07-29
HU208881B (en) 1994-01-28
CZ279385B6 (cs) 1995-04-12
PT96801A (pt) 1992-12-31

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