EP0243647B1 - Disjoncteur avec déclenchement thermique - Google Patents

Disjoncteur avec déclenchement thermique Download PDF

Info

Publication number
EP0243647B1
EP0243647B1 EP87103951A EP87103951A EP0243647B1 EP 0243647 B1 EP0243647 B1 EP 0243647B1 EP 87103951 A EP87103951 A EP 87103951A EP 87103951 A EP87103951 A EP 87103951A EP 0243647 B1 EP0243647 B1 EP 0243647B1
Authority
EP
European Patent Office
Prior art keywords
carrier
housing
accordance
protective switch
integral
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
EP87103951A
Other languages
German (de)
English (en)
Other versions
EP0243647A1 (fr
Inventor
Willy Feller
Peter Hilfiker
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.)
Rockwell Automation Switzerland GmbH
Original Assignee
Sprecher und Schuh 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 Sprecher und Schuh AG filed Critical Sprecher und Schuh AG
Publication of EP0243647A1 publication Critical patent/EP0243647A1/fr
Application granted granted Critical
Publication of EP0243647B1 publication Critical patent/EP0243647B1/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
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0207—Mounting or assembling the different parts of the circuit breaker
    • 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
    • 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
    • H01H71/08—Terminals; Connections
    • H01H2071/084—Terminals; Connections specially adapted for avoiding decalibration of trip unit, e.g. bimetal, when fixing conductor wire to connector
    • 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
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0207—Mounting or assembling the different parts of the circuit breaker
    • H01H71/0214—Housing or casing lateral walls containing guiding grooves or special mounting facilities

Definitions

  • the present invention relates to a circuit breaker with thermal overcurrent release according to the preamble of claim 1 and is based on DE-C 890 207.
  • the bimetallic elements assigned to each phase act with their free end on a common actuating element, which is generally designed as a slide. Appropriate measures must be taken to ensure that all bimetallic elements have the same effect on the actuating element while heating the same. This means that at a certain ambient temperature and no current flow through the bimetal elements, the bending ends of all the bimetal elements must have the same position with respect to the actuating member.
  • a circuit breaker of the type mentioned in which the bimetallic element is fastened to a carrier which forms a unit with the bimetallic element.
  • This unit can be inserted into a housing part during assembly.
  • the carrier has opposite arms in pairs, which can be bent elastically in the bending direction of the bimetallic element.
  • these arms resiliently rest on the side walls of the housing part, as a result of which the unit mentioned is held in a certain position. Since this positioning of the structural unit is carried out by clamping force alone, it cannot be ensured that the bending end of the bimetallic element assumes a precisely defined position.
  • means must also be provided in order to be able to set the latter exactly after the bimetal element has been inserted.
  • the present invention has for its object to provide a circuit breaker of the type mentioned, which also allows a simple and as little complex assembly with a compact design, but in which an adjustment of the thermal overcurrent release after installing the bimetallic elements can be omitted.
  • the guides formed on the housing bring the carrier, together with the bimetal elements attached to it, into a precisely defined position when the carrier is inserted.
  • the bimetallic elements, or their specific areas to be bent already assume the correct position after installation, so that adjustment is not necessary.
  • a prerequisite for this, however, is that the position of the bimetallic elements with respect to their support is the same for all bimetallic elements at the same temperature, which can be achieved without great effort when fastening the bimetallic elements to the assigned supports.
  • the correct installation of the carrier including the bimetal elements can thus be carried out in a simple manner, that is to say by inserting the structural units formed from the carrier and bimetal elements.
  • Preferred embodiments form the subject of claims 2 - II.
  • the carriers are provided with a connecting terminal projecting from them and are connected to heating elements connected to a bimetallic element at one end with connecting elements which carry a contact piece of a switching contact.
  • FIGS. 1-3 show, in different views, a structural unit 2 of a multi-phase circuit breaker with a thermal overcurrent release, which unit has a bimetal element I.
  • the structural units assigned to the other phases and not shown in FIGS. 1-3 are constructed in the same way as structural unit 2 according to FIGS. 1-3. All units 2 are accommodated next to one another in a manner known per se in a housing which is not shown in the figures.
  • this housing consists of an upper housing part 3 and a cover 4 which can be screwed to it. Both the upper housing part and the cover 4 are only indicated in the figures.
  • the bimetallic element I is provided with a heating winding 5 which is connected at one end to the bimetallic element I at the fastening point designated by 6.
  • a connection element 7 is fastened to this heating winding 5, which is formed in one piece with an arc running rail 8.
  • the connection element 7 carries a contact piece 9 of a switching contact 10, the movable contact piece II of which is fastened to a support arm 12 shown schematically in FIG. The latter can be moved in the direction of arrow C to open the switching contact 10.
  • the elongated bimetallic element I is firmly connected at one end la to a metallic carrier 13.
  • the latter carries a protruding terminal 14, which consists of the carrier 13 in one piece.
  • the connection terminal 14 is provided with a threaded bore 15 (FIG. 3) into which a clamping screw 16 (FIG. I) is screwed.
  • the free end 1b of the bimetallic element I which bends when heated in the direction of the arrow E (FIG. 2) engages in a groove 18a of a slide 18 which is displaceably mounted in the housing in the bending direction E of the bimetallic element I.
  • This slide 18 serves to actuate a trigger mechanism, not shown in the figures.
  • the carrier 13 is fork-shaped at its free end and has two tongues 19 and 20 running at a distance from one another (FIG. 2).
  • a catch 21 (FIG. 4), which is attached to the upper housing part 3, grips between the two tongues 19, 20.
  • One tongue 20 is plastically deformable, which makes it possible to compensate for manufacturing inaccuracies.
  • the tongue 20 is narrower than the other tongue 19.
  • the support 13 together with the bimetallic element 1 is guided on the one hand when the assembly 2 is pushed in and on the other hand also held in the position defined by the guide grooves 24, 25 . Due to the formed at the other end of the carrier 13 and the housing-fixed latch 21 between receiving tongues 19, 20, the carrier 13 is positioned as already mentioned with respect to this latch 21. It follows from this that in the course of the insertion of the structural unit 2 in the direction of arrow F into the upper housing part 3, the carrier 13 is forcibly brought into a position defined by the guide grooves 24, 25 and the locking lug 21.
  • the bendable end Ib of the bimetal element also has a precisely defined position with respect to the slide 18 and also with respect to the bimetal elements assigned to the other phases.
  • FIG. 4 in which the carriers 13, 113 of two adjacent units 2, 102 and the ends Ib, 100b of the corresponding bimetal elements I, 100 are shown purely schematically.
  • the tongues 19, 20, respectively. 119, 120 encompass the latches 21 fixed to the housing, respectively. 121, which are arranged at a given fixed distance a from each other.
  • the bendable ends Ib, 100b of the bimetallic elements I, 100 are arranged at a certain distance at the same temperature, which is determined by the distance a of the detents 21 , 121 is defined.
  • connection terminal 14 is also provided with a projection 26 which engages in a groove 27 which is formed in the upper part 3 of the housing and extends in the insertion direction F.
  • This protrusion 26 engaging in the groove 27 takes over the torques which occur when the clamping screw 16 is tightened in the direction of the arrow D. This prevents the carrier 13 connected to the connecting terminal 14 from being deformed when the clamping screw 16 is tightened.
  • two extensions 28, 29 protrude from the connecting element 7, which engage in grooves 30, 31 on the cover 4.
  • the groove 31 is not visible in FIG. 3 and the groove 30 is not shown in FIG. 2.
  • the grooves 30, 31 also extend in the direction of insertion F. Through these grooves 30, 31, the connection element 7 and with it also the Uchtbogen running rail 8 is positioned.
  • the bimetallic element I is connected to the carrier 13, the connecting terminal 14, the connecting element 7 together with the Uchtbogen running rail 8 and the contact piece 9 to form a structural unit 2, which can be easily installed by pushing it into the upper housing part 3.
  • the grooves 24, 25 in the upper housing part 3 provide guidance and simultaneous positioning, to which the locking lug 21 also contributes.
  • the connecting element 7 is likewise guided and positioned in the region of the contact piece 9, specifically by means of the grooves 30, 31 in the cover 4.
  • the assembly 2 is fixed on the one hand by means of the tongues 19, 20 encompassing the detent 21 and on the other hand by clamping the connecting element 7 between the stop 34 and the shoulders 32, 33 on the cover 4.
  • the unit 2 When the structural unit 2 is pushed in, it is thus forcibly positioned, so that readjustment is unnecessary.
  • the unit 2 is also fixed in place, forcibly and without additional work steps, by screwing on the cover 4, which in the region designated by 35 in FIG. 2 presses against the end 1 a of the bimetal element and the end of the carrier 13 connected to it.

Landscapes

  • Thermally Actuated Switches (AREA)

Claims (11)

1. Disjoncteur de protection avec déclenchement thermique par surintensité de courant, comprenant au moins un élément bimétallique (1) fixé sur un support (13) et formant, conjointement avec ledit support (13), un ensemble pouvant être engagé dans une partie (3) d'un coffret (3, 4) qui, lors de l'engagement du support (13) dans la partie (3) du coffret, est maintenu dans le coffret dans une position déterminée par des moyens de centrage (21; 24, 25) sur le coffret (3, 4) destinés à agir sur le support (13), caractérisé en ce que les moyens de centrage comprennent des guidages (24; 25) dans le coffret (3, 4) qui s'étendent dans la direction d'engagement (F) du support (13) et de l'élément bimétallique (1), guident le support (13) et définissent la position du support (13) , y compris l'élément bimétallique (1), dans la direction de pliage (E) dudit élément bimétallique (1).
2. Disjoncteur de protection selon la revendication 1, caractérisé en ce qu'il comprend des rainures de guidage (24; 25) solidaires du coffret dans lesquelles s'engagent des saillies (22; 23) qui s'écartent du support (13).
3. Disjoncteur de protection selon l'une des revendications 1 ou 2, caractérisé en ce que les moyens de centrage comprennent des éléments d'arrêt (19, 20; 21) coopérant les uns avec les autres et disposés d'une part sur le coffret (3, 4) et, d'autre part, sur le support (13).
4. Disjoncteur de protection selon la revendication 3, caractérisé en ce que l'un des éléments d'arrêt est conformé en talon d'arrêt (21) de préférence solidaire du coffret qui s'engage entre deux languettes (13, 20) prévues de préférence sur le support (13).
5. Disjoncteur de protection selon la revendication 4, caractérisé en ce que l'une des languettes (20) est déformable.
6. Disjoncteur de protection selon l'une des revendications 1 à 5, caractérisé en ce que le support (13) est muni d'une borne de connexion (14) s'écartant de celui-ci.
7. Disjoncteur de protection selon la revendication 6, caractérisé en ce que la borne de connexion (14) munie d'un taraudage (15) pour la réception d'une vis de serrage (16) est bloquée en rotation dans le sens de rotation (D) de la vis de serrage (16) au moyen d'un guidage (27) solidaire du coffret.
8. Disjoncteur de protection selon l'une des revendications 1 à 7, caractérisé en ce qu'un élément de connexion (7) qui porte un plot de contact (9) d'un contact de commutation (10) est relié à un enroulement chauffant (5) rattaché à l'une des extrémités de l'élément bimétallique (1).
9. Disjoncteur de protection selon la revendication 8, caractérisé en ce que l'élément de connexion (7) est guidé, de préférence dans la région du plot de contact (9), dans des guidages (30, 31) solidaires du coffret qui s'étendent dans la direction d'engagement (F) du support (13).
10. Disjoncteur de protection selon la revendication 9, caractérisé en ce que les guidages sont des rainures de guidage (30, 31) dans lesquelles s'engagent des prolongements (28, 29) qui s'écartent de l'élément de connexion (7).
11. Disjoncteur de protection selon l'une des revendications 9 ou 10, caractérisé en ce que l'élément de connexion (7) est appliqué contre une butée (34) par des moyens d'arrêt (32, 33) solidaires du coffret.
EP87103951A 1986-04-07 1987-03-18 Disjoncteur avec déclenchement thermique Expired - Lifetime EP0243647B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1352/86 1986-04-07
CH135286 1986-04-07

Publications (2)

Publication Number Publication Date
EP0243647A1 EP0243647A1 (fr) 1987-11-04
EP0243647B1 true EP0243647B1 (fr) 1990-09-12

Family

ID=4208464

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87103951A Expired - Lifetime EP0243647B1 (fr) 1986-04-07 1987-03-18 Disjoncteur avec déclenchement thermique

Country Status (5)

Country Link
US (1) US4745389A (fr)
EP (1) EP0243647B1 (fr)
JP (1) JP2539617B2 (fr)
DE (1) DE3764853D1 (fr)
FI (1) FI84673C (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA885255B (en) * 1987-04-21 1989-04-26 Circuit Breaker Ind An electric circuit breaker
FR2669144B1 (fr) * 1990-11-08 1995-02-10 Telemecanique Assemblage d'un bilame pour appareil de coupure de courant et d'une piece servant de support au bilame.
DE19636562B4 (de) * 1996-09-09 2004-08-26 Siemens Ag Thermischer Überlastschutz
DE102004054176A1 (de) * 2004-11-10 2006-05-24 Abb Patent Gmbh Thermischer Auslöser

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE890207C (de) * 1951-05-06 1953-09-17 Siemens Ag Anordnung zum formschluessigen Einbau von Schalt-, insbesondere Bi-Metallelementen in Isoliergehaeuse
FR1405810A (fr) 1962-04-28 1965-07-16 Ellenberger & Poensgen Disjoncteur à maximum multipolaire actionné par bouton-poussoir
JPS593474Y2 (ja) * 1978-08-28 1984-01-31 富士電機株式会社 熱動形過負荷継電器
DE7828060U1 (de) * 1978-09-21 1979-11-29 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Bimetallauslöser
CH662211A5 (de) * 1982-03-22 1987-09-15 Sprecher & Schuh Ag Verfahren zum herstellen eines mehrphasigen thermischen ausloesers sowie ein nach diesem verfahren hergestellter ausloeser.

Also Published As

Publication number Publication date
FI84673B (fi) 1991-09-13
JP2539617B2 (ja) 1996-10-02
US4745389A (en) 1988-05-17
FI871475A0 (fi) 1987-04-03
DE3764853D1 (de) 1990-10-18
EP0243647A1 (fr) 1987-11-04
FI84673C (fi) 1991-12-27
JPS62243221A (ja) 1987-10-23
FI871475A (fi) 1987-10-08

Similar Documents

Publication Publication Date Title
EP3476007B1 (fr) Borne de connexion de conducteur
EP0107611B1 (fr) Dispositif de sectionnement avec lamelles de contact pontant pour appareil interrupteur débrochable
DE2216145A1 (de) Adapter fuer stromschienen
CH631579A5 (de) Elektrische klemme zum anbringen an einer tragschiene.
EP0334975A1 (fr) Connexion de conducteur
EP0985864A2 (fr) Dispositif de support pour des câbles
DE3327675C2 (fr)
DE2832224C2 (fr)
EP0243647B1 (fr) Disjoncteur avec déclenchement thermique
CH643401A5 (de) Schutzleiter-reihenklemme.
EP0198265A2 (fr) Support pour la fixation par encliquetage d'appareils de commutation ou d'installation électriques sur rails profilés normalisés
DE2615242C2 (de) Montagesockel
DE2706988A1 (de) Schraubenlose anschlussklemme zur stromuebertragung von elektrischen leitern
DE3502864A1 (de) Vorrichtung zur stumpfen elektrischen verbindung von stromschienen
CH652269A5 (en) Quick mounting base made of plastic, for fixing an electrical device or printed-circuit board
EP0168714B1 (fr) Fixation rapide d'un boîtier d'appareil d'installation électrique sur un rail de support profilé
DE19531115A1 (de) Anschlußklemme
DE4011447A1 (de) Schnellbefestigung fuer ein elektrisches installationsgeraet
EP0336251B1 (fr) Borne à vis
EP0451723B1 (fr) Dispositif à fixation rapide par encliquetage d'appareil d'installation sur un rail profilé normalisé
EP0155905B1 (fr) Borne de raccordement pour un appareil électrique de panneau
DE7234016U (de) Kupplung für elektrische Verteilungsschienen
EP1050090A1 (fr) Element d'assemblage
EP0139980A2 (fr) Cable clamp
DE3136545A1 (de) Vorrichtung zum befestigen eines installationsgeraetes auf zwei normprofiltragschienen

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: A1

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

17P Request for examination filed

Effective date: 19871121

17Q First examination report despatched

Effective date: 19900108

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

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

ET Fr: translation filed
ITF It: translation for a ep patent filed

Owner name: SAIC BREVETTI S.R.L.

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

Ref document number: 3764853

Country of ref document: DE

Date of ref document: 19901018

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
ITTA It: last paid annual fee
REG Reference to a national code

Ref country code: CH

Ref legal event code: PFA

Free format text: SPRECHER + SCHUH MANAGEMENT AG

Ref country code: CH

Ref legal event code: PUE

Owner name: SPRECHER & SCHUH AG

ITPR It: changes in ownership of a european patent

Owner name: CAMBIO RAGIONE SOCIALE;SPRECHER + SCHUH MANAGEMENT

ITPR It: changes in ownership of a european patent

Owner name: CESSIONE;SPRECHER + SCHUH AG

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

Ref country code: FR

Ref legal event code: CD

EAL Se: european patent in force in sweden

Ref document number: 87103951.7

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: CH

Payment date: 20050310

Year of fee payment: 19

Ref country code: SE

Payment date: 20050310

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: 20060317

Year of fee payment: 20

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

Ref country code: SE

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

Effective date: 20060319

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

Ref country code: GB

Payment date: 20060329

Year of fee payment: 20

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

Ref country code: CH

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

Effective date: 20060331

Ref country code: LI

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

Effective date: 20060331

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

Ref country code: IT

Payment date: 20060331

Year of fee payment: 20

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

Ref country code: DE

Payment date: 20060502

Year of fee payment: 20

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

EUG Se: european patent has lapsed
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: 20070317

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20