EP0050719B1 - Dispositif de contact et d'extinction pour disjoncteurs miniatures électriques - Google Patents

Dispositif de contact et d'extinction pour disjoncteurs miniatures électriques Download PDF

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Publication number
EP0050719B1
EP0050719B1 EP19810106503 EP81106503A EP0050719B1 EP 0050719 B1 EP0050719 B1 EP 0050719B1 EP 19810106503 EP19810106503 EP 19810106503 EP 81106503 A EP81106503 A EP 81106503A EP 0050719 B1 EP0050719 B1 EP 0050719B1
Authority
EP
European Patent Office
Prior art keywords
contact piece
piece
swivel
contact
guide plate
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
Application number
EP19810106503
Other languages
German (de)
English (en)
Other versions
EP0050719A1 (fr
Inventor
Peter Flohr
Bernd Willems
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.)
Heinrich Kopp GmbH and Co KG
Original Assignee
Heinrich Kopp GmbH and Co KG
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 DE19803031549 external-priority patent/DE3031549A1/de
Priority claimed from DE19813130944 external-priority patent/DE3130944A1/de
Application filed by Heinrich Kopp GmbH and Co KG filed Critical Heinrich Kopp GmbH and Co KG
Priority to AT81106503T priority Critical patent/ATE16540T1/de
Publication of EP0050719A1 publication Critical patent/EP0050719A1/fr
Application granted granted Critical
Publication of EP0050719B1 publication Critical patent/EP0050719B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • H01H73/18—Means for extinguishing or suppressing arc
    • 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 contact and extinguishing device for small electrical self-switches according to the preamble of claim 1.
  • the electromagnetic release element is designed as a striking anchor system, the field winding of which is surrounded by a magnetic yoke in the form of a frame.
  • a quenching plate packet is arranged below the release member, which can be bridged in front of its end face on an extension of each of its two arc guide plates by means of a swivel contact piece to be actuated by the spring mechanism.
  • the swivel contact piece is electrically insulated on an extension of the guide plate below in a notch of a housing attachment and the extension of the guide plate above is designed as a horn-like fixed contact piece.
  • the invention is based on the object, in the case of the contact and extinguishing device for small electrical self-switches of the type mentioned at the beginning, to constructively combine the individual parts of the components in question, to design them as such in a more assembly-friendly manner and at the same time to improve in functional terms.
  • the magnetic yoke and the arc guide plate which is continued as a fixed contact piece, are punched and folded in one piece from a copper-plated steel sheet strip
  • the other arc guide plate also consists of a copper-plated steel sheet strip, which is insulated on the end face of the quenching plate package immediately before the Bearing of the swivel contact piece and in front of a discharge tongue of the same is provided with a nose ramp protruding in the direction of the discharge tongue of the swivel contact piece and the end facing away from the fire-extinguishing plate package has an angled part anchored in the housing, which is mechanically connected to one of the externally accessible connecting terminals.
  • a socket-shaped attachment of the magnetic core guiding the impact anchor is only riveted on the end face to the overlapping legs of the magnetic yoke.
  • a finished assembly element is created, which combines the entire tripping element, the fixed contact piece and one of the two arcing baffles in order to be able to be inserted into the correspondingly designed switch housing.
  • the other arc guide plate provided on the opposite side of the quenching plate stack is likewise produced from a copper-plated steel plate strip.
  • the guide plate designed as a typical running rail for the switching arc is provided at its end facing away from the quenching plate package with an anchoring anchored in the housing, which is mechanically connected to one of the connection terminals of the circuit breaker. Because of this, the current routing via the electrothermal release element and the swivel contact piece is no longer required, so that the guide plate in question reaches a higher potential, which favors the arc running into the quenching device.
  • the guide plate Since the mounting of the movable swivel contact piece is electrically insulated on the aforementioned guide plate in the notch of a housing extension, the guide plate is itself in front of this bearing point with a nose-shaped in the direction of the pivot Contact piece protruding ramp to allow the switching arc to run largely unhindered in the direction of the quenching plate package. Nevertheless, this area represents a problem in that the arc base point running along the swivel contact piece must pass over the inevitable interruption to the guide plate and the guide plate itself only flows through the arc current after commutation.
  • the swivel contact piece is provided directly above its bearing point with a drain tongue pointing to the ramp of the guide plate. In this way, an almost closed track results for the relevant base point of the switching arc running from the contact interruption point in the direction of the quenching plate package.
  • this corresponding design of swivel contact piece and baffle strip in the area of the insulated bearing point has the consequence that with each switch-off under load the arc current flowing through the swivel contact piece follows the special design of the contact piece into the intended discharge tongue before it from here onto the immediately adjacent and also correspondingly shaped baffle. Due to the geometrical shape of the outlet tongue, a high field concentration is created at this point, which results in a particularly strong magnetic blow to the base of the switching arc column. Because of this, the existing interruption point between the outlet tongue and the ramp is positively overflowed, so that the arc column is able to enter the quenching plate package unhindered on this side as well.
  • the mechanical connection between the baffle in question and the connection terminal is carried out with the aid of a support part for an electrothermal release element which crosses the angled portions of the bend of the baffle by slots.
  • the carrier part also forms the mounting bracket for the screwable socket clamp, while the anchoring lugs crimped with it serve to bend the mounting part to the switch housing or to cover it.
  • the bend includes an externally accessible adjusting screw for the adjustment of the electrothermal release element.
  • the inside of the switching chamber between the electrothermal release member and the horn-like protruding fixed contact piece in front of the face of the quenching plate package, mounted on the baffle plate isolated below, consists of a copper-plated, cross-sectionally U-shaped sheet metal strip, the crosspiece of which is just above the bearing runs out into the drain tongue bent above.
  • a tensioning bracket of the spring mechanism engages in the swivel contact piece at the level of the contact contact point, while the free end of the swivel contact piece is acted upon by the release member of the mechanism.
  • the electrical connection of the swivel contact with the electrothermal release device is made via a flexible wire that is welded directly to the (silver-plated) contact point with the swivel contact, which wire can be mechanically hardened for better guidance above the weld.
  • the point of interruption between the fixed contact piece and the pivoting contact piece is covered against the running direction of the switching arc that arises by an impact surface of the plastic tension lever of the spring mechanism.
  • the electric arc is caused to move extremely quickly with its two base points away from the contact break point and along the contact pieces via the subsequent guide plates into the quenching plate package.
  • the contact and extinguishing device of the switching device is composed of the electromagnetic trigger element 1 and the electrothermal trigger element 2 in the effect on the contact arrangement, which consists of the fixed contact piece 4 and the movable swivel contact piece 5 and is arranged in front of the end face of the quenching plate packet 3.
  • the manual switch-on or switch-off process and the respective short-circuit or overcurrent release of the switching device take place by means of a spring mechanism 6 of a known type and switch not considered here guide.
  • the magnetic yoke 1a of the trigger element 1 in conjunction with the horn-like fixed contact piece 4 and the subsequent arc guide plate 3a of the quenching plate package 3 form a coherent assembly part made of copper-plated steel plate.
  • the armature 1b, which is sprung in its direction of impact, and the excitation coil 1c made of anodized aluminum wire and wrapped around it in a single-layered manner are held within the magnetic yoke 1a, which is folded in a rectangular frame-shaped manner, by means of the magnetic core 1d, which for this purpose is located on the end face of the release element 1 with the overlapping folding legs of the magnetic yoke 1a is riveted.
  • This prefabricated structural unit only needs to be inserted into the correspondingly profiled plastic housing of the switching device, the ends of the excitation coil 1c being welded on the one hand in the immediate vicinity of the contact contact point with the magnetic yoke 1 and on the other hand to the external terminal 7a.
  • the guide plate 3b made of copper-clad steel sheet on the opposite side of the quenching plate package 3 has, in its capacity as a guide rail for the switching arc in the region of the bearing point of the pivoting contact piece 5, a run-up ramp 3e which is exposed in the form of a nose and is also at its outer end for connection to the connecting terminal 7b provided with a T-like bend 3c.
  • the longer leg of this bend 3c at the level of the terminal 7b is equipped on both sides with an anchoring projection 3d.
  • the swivel contact piece 5 also consists of copper-plated steel sheet and has a silver coating at its point of contact with the fixed contact piece 4.
  • welding is carried out at this point with the flexible strand 5b, via which the pivotable contact piece 5 is electrically connected along its free-standing end to the bimetal strip of the electrothermal release element 2.
  • the swivel contact piece 5, which is mounted in the notch of the housing attachment 5a and is electrically insulated on the baffle plate 3b of the quenching plate packet 3, is provided with a special outlet tongue 5c in the region of this bearing point.
  • the guide plate 3b is bent up to the full width immediately in front of the housing shoulder 5a forming the notch bearing point to the run-up ramp 3e, which in its inclination is exactly aligned with the outlet tongue 5c protruding against it when the contact path is open.
  • an almost continuous guide rail is created for the base point of the arc column running off the contact interruption point along the pivoting contact piece 5, at the separation point of which the field concentration caused by the arc current also advantageously produces a magnetic blow on the switching arc in the direction of the subordinate arc stack 3 exercises.
  • the flow of the switching arc from the contact interruption point is determined from the point of view of fluid mechanics by an impact surface which the tensioning lever 8 made of plastic on the spring mechanism 6 side opposes the resulting arc.
  • the arc gases are thrown back together with the gases escaping from the plastic part 8 as a result of high heat and are driven explosively into the free-standing opposite direction. Accordingly, the switching arc migrates immediately after it has arisen and at high speed with both base points of the column along the contact pieces onto the associated guide plates 3a and 3b in the direction of the quenching plate package 3, in order to split it into a plurality of partial arcs on its end face and subsequently between the plates cooled, deionized and quickly extinguished.

Claims (4)

1. Dispositif de contact et d'annulation pour petits interrupteurs automatiques équipés d'un mécanisme de déclenchement électromagneti- que (1) en tant que système à induit de choc dont la bobine d'excitation (1 c) est entourée en forme de cadre d'une culasse magnétique (1a) et équipés d'une unité de plaque d'annulation (3) disposée au-dessous du mécanisme de déclenchement avec possibilité de shuntage devant le côté frontal à chaque prolongation de ses deux tôles conducteur de l'arc (3a, 3b) à l'aide d'un élément de contact pivotant (5) à actionner par le mécanisme à fixation immédiate (6), l'élément de contact (5) étant isolé électriquement et disposé sur une des prolongations de tôle conducteur (3b) dans une rainure d'un épaulement de boîtier (5a) et l'autre prolongation du tôle conducteur (3a) étant formée en tant qu'élément de contact fixe (4) saillant en forme de corne, caractérisé en ce que la culasse magnétique (1a) et le tôle conducteur de l'arc (3a) étendu comme élément de contact fixe (4) sont découpés et pliés en une pièce d'un ruban de tôle d'acier plaqué de cuivre et en ce que l'autre tôle conducteur de l'arc (3b) est également composé d'un ruban de tôle d'acier plaqué de cuivre équipé d'une rampe ascendante (3e) saillant en forme de nez en direction de la langue dérouleur (5c) de l'élément de contact pivotant (5) et disposé au côté frontal de l'unité de plaque d'annulation (3) immédiatement devant le logement isolé de l'élément de contact pivotant (5) ainsi que devant une langue dérouleur (5c) de l'élément de contact pivotant, le ruban de tôle d'acier disposant d'une pièce coudée (3c) ancrée dans le boîtier au côté opposé de l'unité de plaque d'annulation (3), cette pièce coudée étant raccordée mécaniquement à une des bornes de raccordement (7b) accessible de l'extérieur.
2. Dispositif de contact et d'annulation selon la revendication 1, caractérisé en ce que le raccord mécanique entre le tôle conducteur (3b) et la borne de raccordement (7b) est réalisé à l'aide d'un support (2b) pour un mécanisme de déclenchement électrothermique (2), ce composant recouvrant les points d'ancrage (3s) de la pièce coudée (3c) à travers des fentes, et en ce que la pièce coudée (3c) sert à loger également une vis de réglage pour l'ajustage du mécanisme de déclenchement électrothermique (2).
3. Dispositif de contact et d'annulation selon la revendication 1, caractérisé en ce que l'élément de contact pivotant (5) se compose d'un ruban de tôle avec une coupe transversale en forme de U dont la barre transversale se termine dans la langue dérouleur saillante courbée (5c) juste au-dessus du logement du ruban de tôle.
4. Dispositif de contact et d'annulation selon la revendication 1, caractérrisé en ce que le point d'interruption entre l'élément de contact fixe (4) et l'élément de contact pivotant (5) est couvert, au sens de mouvement opposé de l'arc de déclenchement, d'une surface de rebondissement d'un levier de tension (8) en matière plastique du mécanisme à fixation immédiate.
EP19810106503 1980-08-21 1981-08-21 Dispositif de contact et d'extinction pour disjoncteurs miniatures électriques Expired EP0050719B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81106503T ATE16540T1 (de) 1980-08-21 1981-08-21 Kontakt- und loescheinrichtung fuer elektrische kleinselbstschalter.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3031549 1980-08-21
DE19803031549 DE3031549A1 (de) 1980-08-21 1980-08-21 Kontakt- und loescheinrichtung fuer elektrische schaltgeraete
DE19813130944 DE3130944A1 (de) 1981-08-05 1981-08-05 Kontakt- und loescheinrichtung fuer elektrische schaltgeraete
DE3130944 1981-08-05

Publications (2)

Publication Number Publication Date
EP0050719A1 EP0050719A1 (fr) 1982-05-05
EP0050719B1 true EP0050719B1 (fr) 1985-11-13

Family

ID=25787365

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810106503 Expired EP0050719B1 (fr) 1980-08-21 1981-08-21 Dispositif de contact et d'extinction pour disjoncteurs miniatures électriques

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EP (1) EP0050719B1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3514390A1 (de) * 1985-04-20 1986-10-23 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Leitungsschutzschalter
FR2630580B1 (fr) * 1988-04-21 1990-08-03 Hager Electro Appareil modulaire de protection ou de commande electrique
FR2648613B1 (fr) * 1989-06-16 1991-09-13 Hager Electro Perfectionnement aux appareils electriques de coupure
DE4313207A1 (de) * 1993-04-22 1994-10-27 Kopp Heinrich Ag Leitungsschutzschalter
CN1037794C (zh) * 1994-02-10 1998-03-18 松下电工株式会社 电流断路器
CN108666184B (zh) * 2017-03-31 2023-08-15 温州圣普电气有限公司 大电流小型断路器

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1966598C3 (de) * 1969-01-31 1981-03-19 Westermayer, Joseph, Dipl.-Ing., 8500 Nürnberg Elektrischer Kleinselbstschalter mit Schaltmechanik und Lichtbogenkammer
DE2138438C3 (de) * 1971-07-31 1975-09-04 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Magnetische Auslösespule für Leitungsschutzschalter mit U-förmigem Eisenrückschluß
FR2204872B1 (fr) * 1972-10-30 1976-08-20 Legrand Sa
DE7508649U (de) * 1974-05-14 1975-08-28 Kopp H Hochleistungs-Selbstschalter
DE2504954B2 (de) * 1975-02-06 1976-12-02 Fa. Heinrich Kopp, Inh. Theodor Simoneit, 8756 Kahl Mechanisches sprungwerk, insbesondere fuer kleine hochleistungs-selbstschalter
CH618288A5 (fr) * 1977-08-05 1980-07-15 Weber Ag Fab Elektro
US4217472A (en) * 1977-11-02 1980-08-12 Gould Inc. Compact circuit breaker having high interrupting capacity
CH640082A5 (de) * 1979-02-06 1983-12-15 Weber Ag Fab Elektro Leitungsschutzschalter.

Also Published As

Publication number Publication date
EP0050719A1 (fr) 1982-05-05

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