EP0548730B1 - Déclencheur thermique - Google Patents

Déclencheur thermique Download PDF

Info

Publication number
EP0548730B1
EP0548730B1 EP92121252A EP92121252A EP0548730B1 EP 0548730 B1 EP0548730 B1 EP 0548730B1 EP 92121252 A EP92121252 A EP 92121252A EP 92121252 A EP92121252 A EP 92121252A EP 0548730 B1 EP0548730 B1 EP 0548730B1
Authority
EP
European Patent Office
Prior art keywords
strip
notch
region
free end
bent
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
EP92121252A
Other languages
German (de)
English (en)
Other versions
EP0548730A2 (fr
EP0548730A3 (en
Inventor
Peter Dr. Hoyer
Klaus Dr. Wittmann
Georgi Cwetanski
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 Patent GmbH
Original Assignee
ABB Patent 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
Application filed by ABB Patent GmbH filed Critical ABB Patent GmbH
Publication of EP0548730A2 publication Critical patent/EP0548730A2/fr
Publication of EP0548730A3 publication Critical patent/EP0548730A3/de
Application granted granted Critical
Publication of EP0548730B1 publication Critical patent/EP0548730B1/fr
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
    • H01H69/00—Apparatus or processes for the manufacture of emergency protective devices
    • H01H69/01—Apparatus or processes for the manufacture of emergency protective devices for calibrating or setting of devices to function under predetermined conditions
    • 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
    • H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
    • H01H71/7427—Adjusting only the electrothermal 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
    • H01H71/14—Electrothermal mechanisms
    • H01H71/16—Electrothermal mechanisms with bimetal element

Definitions

  • the invention relates to a thermal release which can be installed in an electrical switching device and is designed as a strip and is clamped in place at one end and the other, free end of which is bent when an overcurrent occurs due to the heating caused by the overcurrent, the strip being in the region of the free one End has at least one notch and the end region between the at least one notch is used for adjustment and can be bent in a suitable manner for this purpose.
  • thermobimetals In electrical switchgear, thermal overcurrent relays or motor circuit breakers, strip-like or strip-shaped thermobimetals are normally used as triggers when overcurrents occur, which are heated either by direct or indirect heating. Recently it has also become known to use strips of so-called shape memory alloys instead of thermobimetals.
  • the bimetallic metals - just like the shape memory alloys - are clamped in place at one end, while the other end is freely movable and presses against a ratchet lever when it is bent out, opening a latching point and an energy store for actuating contact pieces be released. All the triggers have in common that they have to be adjusted in order to achieve a certain tripping characteristic, that is to say for tripping at a certain overcurrent.
  • thermobimetal In the case of miniature circuit breakers, the thermobimetal is often fastened to one leg of a U-shaped or V-shaped fastening part, with a screw between the leg with which the thermobimetal can be adjusted. Adjustment by a screw is also known in other designs; here the nut part into which the screw is screwed is stationary; the screw presses against the bimetal in the area of his foot and bends the free end.
  • thermobimetal there is a weakening in the area of the base of the thermobimetal, which allows the thermobimetal to bend with plastic deformation in the area of the foot.
  • thermobimetal is deformed in the area of the foot changes the angle of the free end in relation to the latching point or the phase failure protection slide, which can cause friction which has an influence on the triggering accuracy.
  • a plate is provided in the area of the foot, one edge of which runs perpendicular to the longitudinal extent and parallel to the surface of the bimetal; the adjustment is made by adjusting the plate by deforming it or a web serving to hold the plate on a stationary element in such a way that said edge bends the thermobimetal.
  • thermobimetal arrangement which comprises three thermobimetals which are provided at their free end with a notch transverse to the longitudinal extension of the thermobimetal, whereby a tongue is formed, by bending them out of the strip plane, the triggering values of the switching device can be changed for the purpose of calibration.
  • thermal bimetal which has a notch in the longitudinal direction at its free end, whereby two longitudinally extending, side by side tongues are formed, one of which is narrower, curved, around which Reduce the distance between the bimetal and a release lever.
  • plastic support plates or washers are used between the phase failure protection slides and the thermobimetals.
  • the object of the invention is to adjust a thermal release using a strip of a bimetallic metal and the like by adjusting the force direction of the release at the same time.
  • the adjustment of the free end or bending of the free end of the strip takes place by means of a fork-like device in which the strip is held stationary in the area of the notch and the end is gripped with a fork part and bent in a corresponding manner.
  • the width B4 of the area 18 is smaller than the width B3; it may be half the size of this.
  • thermobimetal 15 shows a side view of the thermobimetal 15. It can be seen that this is bent in the area of the notches 16, 17 by an angle ⁇ , the area 18 being flat. This area 18 is processed further.
  • thermobimetal 15 can be preformed, for example in the region of the notch 16 and 17, so that the region 18 is bent by an angle ⁇ 1.
  • the angle ⁇ 1 can be smaller than the angle ⁇ (see Fig. 2).
  • 2 shows three elements of a device with which the end region 18 is deformed. This device has a fixed stop 21 to which two movable fork fingers 22 are assigned. The two fork fingers 22 take the free end 18 between them and can thus deform the end region 18, and when the two fork fingers 22 rotate around one another, the bent version according to FIG. 3 can be produced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Thermally Actuated Switches (AREA)

Claims (1)

  1. Déclencheur thermique agencé sous forme de bande, de préférence sous forme de bilame (15) thermique, destiné à être monté dans un appareil électrique de commutation et dont une extrémité est montée fixe tandis que l'autre extrémité qui est libre, lors de l'apparition d'une surintensité, se déforme par suite de l'échauffement provoqué par la surintensité, la bande présentant dans la région de son extrémité libre au moins une encoche (16, 17), la zone d'extrémité (18) définie par l'encoche au nombre d'au moins un servant au réglage et pouvant être tordue à cet effet, caractérisé par le fait que la zone d'extrémité entre l'encoche (16, 17) et l'extrémité présente une section réduite par rapport au reste de la bande et par le fait que la zone d'extrémité (18) libre elle-même est pliée et forme ainsi deux tronçons (19, 20) qui sont pliés l'un par rapport à l'autre suivant un angle obtus.
EP92121252A 1991-12-24 1992-12-14 Déclencheur thermique Expired - Lifetime EP0548730B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4142965 1991-12-24
DE4142965A DE4142965A1 (de) 1991-12-24 1991-12-24 Thermischer ausloeser

Publications (3)

Publication Number Publication Date
EP0548730A2 EP0548730A2 (fr) 1993-06-30
EP0548730A3 EP0548730A3 (en) 1993-10-13
EP0548730B1 true EP0548730B1 (fr) 1995-08-23

Family

ID=6448130

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92121252A Expired - Lifetime EP0548730B1 (fr) 1991-12-24 1992-12-14 Déclencheur thermique

Country Status (2)

Country Link
EP (1) EP0548730B1 (fr)
DE (2) DE4142965A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4336073A1 (de) * 1993-10-22 1995-04-27 Abb Patent Gmbh Thermischer Überstromauslöser für ein elektrisches Schaltgerät
DE19735135A1 (de) * 1997-08-13 1999-02-25 Siemens Ag Verfahren zur Justierung von Schaltelementen aus Bimetallen
DE10114563A1 (de) * 2001-03-24 2002-10-24 Conti Temic Microelectronic Stellelement, insbesondere als Teil eines Stellantriebs für eine Bildaufnahmeeinrichtung
DE10119290A1 (de) * 2001-04-20 2002-10-24 Conti Temic Microelectronic Stellelement, insbesondere als Teil eines Stellantriebs für ein Bilderfassungssystem
US7391289B2 (en) * 2004-08-03 2008-06-24 Siemens Energy & Automation, Inc. Systems, methods, and device for actuating a circuit breaker
AT512262B1 (de) * 2011-12-09 2016-08-15 Eaton Ind Austria Gmbh Verfahren zum justieren einer auslöseeinheit für einen schutzschalter

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE883778C (de) * 1943-07-30 1953-07-20 Voigt & Haeffner Ag Zweimetallstreifen, insbesondere fuer mehrpolige Ausloeser elektrischer Schaltgeraete
DE1029916B (de) * 1957-02-13 1958-05-14 Anni Margareta Leyhausen Geb E Verfahren zum Einstellen von Ausloesevorrichtungen an elektrischen Kleinselbstschaltern
FR1392626A (fr) * 1964-02-04 1965-03-19 Comp Generale Electricite Dispositif de fixation et de réglage notamment pour relais thermique
FR1564704A (fr) * 1968-02-21 1969-04-25

Also Published As

Publication number Publication date
DE4142965A1 (de) 1993-07-01
EP0548730A2 (fr) 1993-06-30
DE59203382D1 (de) 1995-09-28
EP0548730A3 (en) 1993-10-13

Similar Documents

Publication Publication Date Title
DE3716996A1 (de) Verformungselement
DE102015213375B4 (de) Thermische Überlast-Auslösevorrichtung und Schutzschaltgerät
EP0548730B1 (fr) Déclencheur thermique
DE3409393C2 (de) Thermoschutzschalter
EP2591488B1 (fr) Régulateur bilame
EP0833357B1 (fr) Procédé pour l'ajustage d'un déclencheur thermique de surcharge
EP0195816A1 (fr) Declencheur bimetallique.
DE1126975B (de) UEberstromschutzschalter mit thermischer Ausloesung
DE2502579C2 (de) Druckknopfbetaetigter ueberstromschalter mit thermischer ausloesung
EP0743708B1 (fr) Borne de raccordement pour barre de distribution
DE1908806C3 (de) Thermisches mehrpoliges Bimetall-Schutzrelais
DE2646840A1 (de) Elektrischer schutzschalter
EP0336251B1 (fr) Borne à vis
EP2139085B1 (fr) Boîtier doté d'un élément de fermeture
DE2717444C2 (de) Mehrpoliges thermisches Überstromrelais
DE4308539B4 (de) Einrichtung zur Übertragung der Bewegung eines Thermobimetallelementes
CH627876A5 (de) Zeitschalter.
DE19537253C2 (de) Kippschalter
EP0890968B1 (fr) Disjoncteur unipolaire
DE1614675B2 (de) Ausloeseeinrichtung fuer bimetallrelais
EP4498528B1 (fr) Borne monobloc à ressort pour au moins un conducteur électrique
DE2947626C2 (de) Thermobimetallanordnung für ein elektrisches Schaltgerät
DE1465443C3 (de) Bimetallgesteuertes Gerät, insbesondere Schalter
DE2755546C2 (de) Motorschutzschalter
DE102011004216A1 (de) Vorrichtung zur Justage der Spitze eines Bimetallstreifens

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): DE FR GB IT

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB IT

17P Request for examination filed

Effective date: 19940307

17Q First examination report despatched

Effective date: 19940812

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

REF Corresponds to:

Ref document number: 59203382

Country of ref document: DE

Date of ref document: 19950928

ET Fr: translation filed
ITF It: translation for a ep patent filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19951108

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

Ref country code: DE

Payment date: 19990820

Year of fee payment: 8

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

Ref country code: FR

Payment date: 19990823

Year of fee payment: 8

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

Ref country code: GB

Payment date: 19990914

Year of fee payment: 8

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 NON-PAYMENT OF DUE FEES

Effective date: 20001214

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20001214

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

Ref country code: FR

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

Effective date: 20010831

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

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: 20011002

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

Ref country code: IT

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

Effective date: 20051214