EP0797232B1 - Thermischer Differential-Auslöser mit Bimetall - Google Patents

Thermischer Differential-Auslöser mit Bimetall Download PDF

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Publication number
EP0797232B1
EP0797232B1 EP97400540A EP97400540A EP0797232B1 EP 0797232 B1 EP0797232 B1 EP 0797232B1 EP 97400540 A EP97400540 A EP 97400540A EP 97400540 A EP97400540 A EP 97400540A EP 0797232 B1 EP0797232 B1 EP 0797232B1
Authority
EP
European Patent Office
Prior art keywords
bimetallic
strips
rules
trip
strip
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
EP97400540A
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English (en)
French (fr)
Other versions
EP0797232A1 (de
Inventor
Patrick Roger
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 Industries SAS
Original Assignee
Schneider Electric Industries SAS
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 Industries SAS filed Critical Schneider Electric Industries SAS
Publication of EP0797232A1 publication Critical patent/EP0797232A1/de
Application granted granted Critical
Publication of EP0797232B1 publication Critical patent/EP0797232B1/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
    • 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
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/14—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection
    • H01H83/142—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection with bimetal elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H2011/0087—Welding switch parts by use of a laser beam

Definitions

  • the present invention relates to a differential thermal release for electrical switch device, in particular for circuit breaker, comprising a trip device with two strips mounted movable parallel to a same direction and associated with a trigger mechanism as well as several bimetallic strips, the opposite faces of which are applicable against both strips by through a single adjustment piece, so that a concomitant deflection or differentiated bimetallic strips generates a simultaneous or differential displacement of strips, the adjustment piece being for each bimetal fixed to the head of the bimetal in a position which is adjustable according to the direction of movement of the strips, and which is obtained after a heating of calibration of the bimetallic strips.
  • Such a trigger is known from document WO-86 02197.
  • the present invention aims to allow a simple and in situ adjustment of the trip path for bimetallic strips of a trip device of the type described, avoiding risk of jamming and facilitating the operation of fixing the adjusting parts.
  • the head of each bimetallic strip comprises an inclined and laterally cleared edge so that the adjustment piece is placed before fixing so freely sliding on the inclined edge, being vertically held on the crimps.
  • the inclination of the edge allows on the one hand the adjustment piece to be positioned vertically on the edge and on the other hand facilitates its fixing, in particular by a laser welding beam.
  • the two strips of the triggering crew are obtained by cutting breakable zones from a laying frame and include housings facing each other for the adjustment parts, these housings being arranged to keep the adjustment pieces affixed to the bimetallic strips in an inclined position until they are fixed to the bimetallic strips.
  • Figure 1 shows in perspective a differential thermal trip device according to the invention.
  • Figure 2 schematically shows a top view of the trigger of the Figure 1 after fixing the adjustment pads to the bimetallic strips.
  • Figure 3 shows in elevation the head of a bimetal strip with the adjustment pad associated with it.
  • the differential thermal release 10 is intended to be included in a electrical protection device such as a motor circuit breaker, a circuit breaker or a thermal relay, for example three-pole, ensuring the protection of a charge against overcurrents or phase imbalances.
  • a electrical protection device such as a motor circuit breaker, a circuit breaker or a thermal relay, for example three-pole, ensuring the protection of a charge against overcurrents or phase imbalances.
  • the trip device further comprises a crew of trigger 20 provided with two strips 30.40 movable parallel to the direction X and serving as organs detecting the displacement, concomitant or differentiated, of bimetallic strips.
  • the strip 30 includes abutment surfaces 31a, b, c can be stressed by the respective bimetallic strips, these surfaces 31 being arranged on branches 32a, b, c perpendicular to a bar 33 of the strip oriented along X; similarly, the strip 40 comprises abutment surfaces 41a, b, c which can be urged by the bimetallic strips in the direction X 'opposite to X and arranged on branches 42a, b, c perpendicular to a strip 43 of the strip oriented along X.
  • a lever 21 capable of acting on a mechanism trigger 14 of which only the attack element has been shown here.
  • each bimetallic strip 11 there is provided at the head 13 of each bimetallic strip 11 a adjusting part 15a, b, c constituted in the present example by a pad (see figures), but which could also be a needle or the like.
  • a pad see figures
  • Each pad 15 cooperates at one end 16 or 17 with an abutment surface 31.41 of a respective strip 30.40.
  • the pellets are carried by the sliders in side pockets 35,45 formed in the branches 32,42 thereof, the strips being initially assembled or formed into a single rectangular frame 30.40, being kept a slight distance h above a horizontal edge upper 18 of the head 13 of the bimetallic strips and in contact with an inclined edge 19 of the head 13, so that it can slide freely on this edge, both to be positioned high on it and to move laterally without jamming.
  • Frame 30.40 has weakened areas at two opposite corners 36,46 which will allow after adjustment the dissociation by cutting.
  • the pockets 35.45 formed in the branches 32,42 of the strips include inclined edges to carry the pads against the inclined edges 19 of the bimetallic strips. As soon as the pastilles have been welded to bimetal strips, cutting for example by laser or other means of the zones weakened 36,46 to separate the two strips.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Thermally Actuated Switches (AREA)
  • Breakers (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Fats And Perfumes (AREA)
  • Lubricants (AREA)

Claims (4)

  1. Differential-Thermoauslöser mit Bimetallstreifen für elektrische Schaltgeräte, vor allem Schutzschalter, die eine Auslösungsvorrichtung mit zwei Schaltleisten (30, 40) haben, die beweglich und parallel in eine selbe Richtung angebracht und mit einem Auslösungsmechanismus verbunden sind, sowie mehrere Bimetallstreifen (11), deren gegenüberliegende Seiten mittels einem einzigen Regelteil (15) gegen die eine oder andere Schaltleiste in Auflage gebracht werden können, damit eine simultane oder differenzierte Ablenkung der Bimetallstreifen ein simultanes oder differenziertes Verschieben der Schaltleisten bewirkt, wobei das Regelteil für jeden Bimetallstreifen (11) an der Spitze (13) des Bimetallspreifens in einer Stellung befestigt wird, die in der Bewegungsrichtung (X) der Schaltleisten (30, 40) einstellbar ist und die nach einem Abgleichserhitzen der Bimetallstreifen erreicht wird.
       dadurch gekennzeichnet, daß die Spitze (13) jedes Bimetallstreifens eine geneigte und seitlich frei liegende Kante (19) hat, damit das Regelteil (15) vor der Befestigung frei gleitend auf die geneigte Kante aufgesetzt wird und dabei vertikal auf den Schaltleisten (30,40)gehalten ist.
  2. Auslöser nach Patentanspruch 1, dadurch gekennzeichnet, daß das Regelteil (15) an der geneigten Kante (19) des Bimetallstreifens in geringem Abstand über einer horizontalen Kante (18) dieser letzteren befestigt ist.
  3. Auslöser nach Patentanspruch 1, dadurch gekennzeichnet, daß die zwei Schaltleisten (30,40) der Auslösungsvorrichtung durch Schneiden von trennbaren Zonen (36, 46) eines Stellrahmens (30, 40) erhalten werden und Einlagerungen (35, 45) enthalten, die im jeweiligen Hinblick darauf geschaffen sind, um die, auf den Bimetallstreifen (11) in geneigter Stellung aufgesetzten Regelteile (15) bis zur Befestigung dieser an den Bimetallstreifen zu halten.
  4. Auslöser nach Patentanspruch 3, dadurch gekennzeichnet, daß der Stellrahmen (30, 40) eine allgemeine, rechteckige Form hat, wobei die trennbaren Zonen (36, 46) sich an den Ecken des Rechtecks befinden.
EP97400540A 1996-03-20 1997-03-12 Thermischer Differential-Auslöser mit Bimetall Expired - Lifetime EP0797232B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9603567 1996-03-20
FR9603567A FR2746542B1 (fr) 1996-03-20 1996-03-20 Declencheur thermique differentiel a bilames

Publications (2)

Publication Number Publication Date
EP0797232A1 EP0797232A1 (de) 1997-09-24
EP0797232B1 true EP0797232B1 (de) 2002-07-24

Family

ID=9490429

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97400540A Expired - Lifetime EP0797232B1 (de) 1996-03-20 1997-03-12 Thermischer Differential-Auslöser mit Bimetall

Country Status (7)

Country Link
US (1) US5825273A (de)
EP (1) EP0797232B1 (de)
KR (1) KR970067429A (de)
CN (1) CN1166684A (de)
AT (1) ATE221250T1 (de)
DE (1) DE69714109T2 (de)
FR (1) FR2746542B1 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19619295C2 (de) * 1996-05-13 2003-10-23 Siemens Ag Justierverfahren für thermische Überlastauslöser
US6095678A (en) * 1997-06-11 2000-08-01 Rockwell Technologies, Llc Method of calibrating a thermal trigger for an electrical switching device
JP4045709B2 (ja) * 1999-04-02 2008-02-13 富士電機機器制御株式会社 回路しゃ断器の熱動形過負荷引外し装置
JP2002093298A (ja) * 2000-09-18 2002-03-29 Fuji Electric Co Ltd 回路しゃ断器
ITMI20012836A1 (it) * 2001-12-28 2003-06-28 Abb Service Srl Componenti di unita' termostatiche e metodo di saldatura laser per illoro ottenimento
US8026784B2 (en) * 2007-08-07 2011-09-27 Hella Kgaa Ganged power circuit switches for on-board electrical system in motor vehicles
CN102800537B (zh) * 2012-07-27 2014-12-10 浙江中凯科技股份有限公司 过电流脱扣器的信号传输机构
CN102867707B (zh) * 2012-09-21 2015-10-28 德力西电气有限公司 一种调节热过载脱扣三相双金同步的方法及其装置
CN102969206B (zh) * 2012-11-13 2014-10-29 德力西电气有限公司 一种电动机保护器脱扣动作一致性调试方法及调试装置
AU2018348031B2 (en) 2017-10-10 2023-11-23 Stepan Company Polymeric dispersants from phenyl glycidyl ether

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4528539A (en) * 1984-06-28 1985-07-09 Eaton Corporation Reduced-size thermal overload relay
DE3435228A1 (de) * 1984-09-26 1986-04-03 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Bimetallausloeser
FR2618019B1 (fr) * 1987-07-08 1989-11-17 Telemecanique Electrique Relais thermique
FR2666928B1 (fr) * 1990-09-13 1992-11-27 Telemecanique Procede de reglage de bilames pour interrupteur de protection thermique differentielle.

Also Published As

Publication number Publication date
EP0797232A1 (de) 1997-09-24
US5825273A (en) 1998-10-20
FR2746542A1 (fr) 1997-09-26
FR2746542B1 (fr) 1998-04-24
DE69714109T2 (de) 2003-03-06
CN1166684A (zh) 1997-12-03
ATE221250T1 (de) 2002-08-15
DE69714109D1 (de) 2002-08-29
KR970067429A (ko) 1997-10-13

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