EP0202546B1 - Schaltmechanismus für einen Leitungsschutzschalter - Google Patents

Schaltmechanismus für einen Leitungsschutzschalter Download PDF

Info

Publication number
EP0202546B1
EP0202546B1 EP86106283A EP86106283A EP0202546B1 EP 0202546 B1 EP0202546 B1 EP 0202546B1 EP 86106283 A EP86106283 A EP 86106283A EP 86106283 A EP86106283 A EP 86106283A EP 0202546 B1 EP0202546 B1 EP 0202546B1
Authority
EP
European Patent Office
Prior art keywords
contact
lever
switching mechanism
place
contact 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
EP86106283A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0202546A3 (en
EP0202546A2 (de
Inventor
Günter Dipl.-Ing. Böker
Dieter Kropp
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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
Priority claimed from DE19858514562 external-priority patent/DE8514562U1/de
Priority claimed from DE19853517748 external-priority patent/DE3517748C1/de
Application filed by Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Priority to AT86106283T priority Critical patent/ATE65345T1/de
Publication of EP0202546A2 publication Critical patent/EP0202546A2/de
Publication of EP0202546A3 publication Critical patent/EP0202546A3/de
Application granted granted Critical
Publication of EP0202546B1 publication Critical patent/EP0202546B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/04—Contacts
    • 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
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H2009/305—Means for extinguishing or preventing arc between current-carrying parts including means for screening for arc gases as protection of mechanism against hot arc gases or for keeping arc gases in the arc chamber
    • 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
    • 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
    • H01H71/526—Manual reset mechanisms which may be also used for manual release actuated by lever the lever forming a toggle linkage with a second lever, the free end of which is directly and releasably engageable with a contact structure

Definitions

  • the invention relates to a switching mechanism for a circuit breaker with a rigid contact lever located under the action of a contact spring according to the preamble of claim 1.
  • Such a switching mechanism is known from DE-A-29 38 858.
  • the contact lever is in the contact closing direction under the action of a leg spring that presses it from the back against a latching point and a fixed contact piece.
  • a pin is provided in the contact lever as a latching point.
  • the invention has for its object to improve the known switching mechanism so that the disadvantages mentioned are avoided and with a simple structure of all mechanism parts in particular the contact lever is guided exactly in its pivoting plane.
  • the invention has the advantage that the tension spring provided as a contact spring has a stabilizing effect on the flat contact lever. Due to the hanging point of the contact spring in the pulling direction in front of the two support points of the contact lever and its pulling action, there is an assignment of the three force application points in a triangular plane, which coincides with the functional level of the contact lever. Since the latching point formed directly on the contact lever also lies in this plane, there are no tilting movements in the switching mechanism and the risk of tilting is excluded. It is easy to use a flat contact lever, which is easy to manufacture and in which even in series production there are always uniform conditions at the latching point. The design of the lever and its contact point as a flat contact also only requires a narrow gap in the partition of the housing between the mechanism space and the switching chamber.
  • a manual control toggle 2 is pivotally mounted, on which in turn a latch bracket 3 is rotatably articulated.
  • the latter is supported with its free end 3a on a nose-shaped, directly attached latching point 4a of a rigid contact lever 4, which is designed as a flat stamped part with contours located in the plane of the drawing and is freely movable about an axis 5 fixed to the housing by means of an elongate recess 4b arranged approximately in its center is pivotable.
  • a line-shaped punched contact point 4c opposite the latching point which protrudes into a switching chamber 1c which is separated from the switching mechanism space 1b by an intermediate wall 1a and works there on a fixed contact piece 6.
  • a quenching plate packet 14 and an arc guide plate 15 are also arranged in the switching chamber in a known manner, the latter being brought up to the intermediate wall 1a and forming the end of the housing base.
  • the fixed contact piece 6 is connected to a magnetic trigger element 7, which is only indicated and which, in the event of a fault, acts on a double lever 8 with its plunger 7a in a known manner.
  • a coupling bracket 9 is suspended on the opposite lever arm of the approximately centrally mounted double lever, which, with an angled pin 9a, engages through a recessed link 4d of the contact lever 4.
  • a tension spring 10 is suspended below the link 4d, in the area between the latching point 4a and the elongated recess 4b of the contact lever serving as a bearing point.
  • This tension spring guided freely via the double lever 8 is at its other end above the magnetic release element 7 hung on a housing-fixed pin 1d, which at the same time also serves as the fixed point of a spring 11 which loads the manual control knob 2 in connection with the latch bracket 3 in the direction of switching off.
  • a release lever 12 is also provided in the switching mechanism, which is arranged pivotable about an axis 13 fixed to the housing in a plane parallel to the contact lever 4.
  • the unlatching lever has an elongated hole 12a, which is offset at approximately a right angle to the link 4d and is also penetrated by the pin 9a of the coupling bracket.
  • the eye 4e lies in the pulling direction of the spring 10 in front of the theoretical connecting line indicated by chain lines between the two support points of the contact lever, which are formed on the one hand by the latching point 4a and on the other hand by the contact point 4c.
  • the two support points, each marked by an arrow, form, together with the point of application of the tension spring 10, the direction of action of which by appropriate positioning on the pin 1d at the same height, a triangular surface which corresponds to the functional level of the contact lever 4 lying in the plane of the drawing.
  • the tension spring 10 is freely stretched in any position between the eye 4e and the pin 1d, so that no tilting movements are transmitted to the flat contact lever.
  • the contact lever which is freely floating on the axis 5, has sufficient burn-up reserve at the contact point in the switched-on position due to its elongated recess 4b 4c and is always pressed by the tension spring 10 onto the fixed contact piece 6. If there is a switch-off process, the free end 3a of the latch bracket 3 is released from the latching point 4a by means of the latching lever 12 pivoting clockwise. The contact lever, which is no longer supported at this point, pivots counterclockwise under the action of the tension spring 10 about the contact point 4c until the recess 4b comes into contact with the axis 5.
  • the contact lever which now swivels about the axis 5 in the same direction, then briefly opens the contact point and the contact-side end comes to rest against the intermediate wall 1a or at a stop edge 1a 'in the position 4c' indicated in dashed lines.
  • the intermediate wall 1 a there is therefore only an open gap-shaped recess for the contact lever end, the length of which corresponds approximately to the usual contact opening path of 6 mm. Since the punched contact lever is preferably only 1.5 mm thick, the gap left in the intermediate wall 1 a can also be kept correspondingly narrow.
  • the above-described shutdown of the switching mechanism is initiated by the triggering elements.
  • these are the magnetic tripping element 7 and, in the case of an overcurrent, a bimetal, not shown, which in each case transmit their movements to the double lever 8, which in turn rotates the unlatching lever 12 by means of a corresponding pivoting movement counterclockwise via the coupling bracket 9 and the elongated hole 12a the axis 13 pivots.
  • the setting 4d serves as a guide for the pin 9a, which lifts the unlatching lever 12 to release the latch.
  • the switching mechanism is switched on again on the hand control knob 2, the latch bracket 3 below the action of the spring 11 comes to lie in front of the latching point 4a and, by pivoting the manual control knob, clamps the switching mechanism into the position shown in a known manner. Due to the stabilizing effect of the tension spring 10, the same conditions are always created at the latching point.

Landscapes

  • Breakers (AREA)
  • Tumbler Switches (AREA)
EP86106283A 1985-05-17 1986-05-07 Schaltmechanismus für einen Leitungsschutzschalter Expired - Lifetime EP0202546B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86106283T ATE65345T1 (de) 1985-05-17 1986-05-07 Schaltmechanismus fuer einen leitungsschutzschalter.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19858514562 DE8514562U1 (de) 1985-05-17 1985-05-17 Schaltmechanismus eines Leitungsschutzschalters
DE19853517748 DE3517748C1 (de) 1985-05-17 1985-05-17 Schaltmechanismus für einen Leitungsschutzschalter
DE8514562U 1985-05-17
DE3517748 1985-05-17

Publications (3)

Publication Number Publication Date
EP0202546A2 EP0202546A2 (de) 1986-11-26
EP0202546A3 EP0202546A3 (en) 1989-05-10
EP0202546B1 true EP0202546B1 (de) 1991-07-17

Family

ID=25832318

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86106283A Expired - Lifetime EP0202546B1 (de) 1985-05-17 1986-05-07 Schaltmechanismus für einen Leitungsschutzschalter

Country Status (4)

Country Link
EP (1) EP0202546B1 (pt)
DE (1) DE3680237D1 (pt)
ES (1) ES8704668A1 (pt)
PT (1) PT82331B (pt)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8702467U1 (de) * 1987-02-18 1987-04-02 Brown, Boveri & Cie Ag, 6800 Mannheim Fehlerstromschutzschalter
DE3717431A1 (de) * 1987-05-23 1988-12-08 Asea Brown Boveri Elektrisches schaltgeraet
FR2766292B1 (fr) * 1997-07-16 1999-09-03 Schneider Electric Sa Dispositif de commande d'un appareil de protection electrique tel un disjoncteur comprenant un moyen de signalisation du declenchement, et disjoncteur equipe d'un tel dispositif
CN102044384B (zh) * 2009-10-09 2014-09-03 Ls产电株式会社 用于小型塑壳式断路器的开关机构
CN105977110B (zh) * 2016-07-19 2019-03-26 浙江创奇电气有限公司 操作机构中的防误脱扣的u型锁扣和操作机构及其断路器

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1904731C3 (de) * 1969-01-31 1975-11-20 Joseph Dipl.-Ing. 8500 Nuernberg Westermeyer Elektrischer Kleinselbstschalter
DE2938858C2 (de) * 1979-09-26 1983-10-13 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Schaltmechanismus für einen Leitungsschutzschalter

Also Published As

Publication number Publication date
ES8704668A1 (es) 1987-04-16
PT82331B (pt) 1992-06-30
DE3680237D1 (de) 1991-08-22
EP0202546A3 (en) 1989-05-10
PT82331A (de) 1986-05-01
EP0202546A2 (de) 1986-11-26
ES554908A0 (es) 1987-04-16

Similar Documents

Publication Publication Date Title
DE2721162C2 (de) Überstromschutzschalter mit Ein- und Ausschaltwippe
DE1638154C3 (de) Selbstschalter
DE2403839C2 (de) Stromkreisunterbrecher mit ein freigebbares Element verriegelnder Verriegelungsvorrichtung
DE3739806C2 (pt)
EP0202546B1 (de) Schaltmechanismus für einen Leitungsschutzschalter
DE3517748C1 (de) Schaltmechanismus für einen Leitungsschutzschalter
DE4208716C2 (de) Schutzschaltgerät
DE3516217C2 (pt)
DE3789738T2 (de) Ausschalter.
EP0380012B1 (de) Kontaktsystem für strombegrenzende Leistungsschalter
DE2445693A1 (de) Elektrischer stromunterbrecher
EP0500138B1 (de) Schutzschalter
EP0279363A2 (de) Fehlerstromschutzschalter
DE3909681C2 (pt)
DE1040668B (de) Elektrischer Kleinselbstschalter
DE2343908A1 (de) Stromunterbrecher mit ueberstrom- und hilfs-ausloesung
EP0263331B1 (de) Überstromschutzschalter
DE3007243C2 (de) Fehlerstromschutzschalter
DE1916956C3 (de) Elektrischer Schnappschalter
DE9302253U1 (de) Schaltvorrichtung für Leistungsschaltgeräte
DE1588259B2 (de) Strombegrenzungsschalter
CH465030A (de) Elektrischer Schalter
CH634689A5 (de) Leitungsschutzschalter in flachbauweise mit elektromagnetischer, thermischer und manueller ausloesung.
DE4303589A1 (de) Kaskaden-Schnappschalter
DE2413499A1 (de) Ueberstrom-schutzschalter

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE FR GB IT LI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE FR GB IT LI

17P Request for examination filed

Effective date: 19890510

17Q First examination report despatched

Effective date: 19901016

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR GB IT LI

REF Corresponds to:

Ref document number: 65345

Country of ref document: AT

Date of ref document: 19910815

Kind code of ref document: T

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
REF Corresponds to:

Ref document number: 3680237

Country of ref document: DE

Date of ref document: 19910822

ET Fr: translation filed
ITF It: translation for a ep patent filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: CH

Ref legal event code: PUE

Owner name: LICENTIA PATENT- VERWALTUNGS-GMBH TRANSFER- AEG NI

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20040629

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20050518

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20050519

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20050520

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20050523

Year of fee payment: 20

Ref country code: CH

Payment date: 20050523

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20050525

Year of fee payment: 20

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20060506

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

Ref country code: GB

Ref legal event code: PE20

BE20 Be: patent expired

Owner name: *AEG NIEDERSPANNUNGSTECHNIK G.M.B.H. & CO. K.G.

Effective date: 20060507