EP0072972B1 - Disjoncteur automatique - Google Patents

Disjoncteur automatique Download PDF

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Publication number
EP0072972B1
EP0072972B1 EP19820107287 EP82107287A EP0072972B1 EP 0072972 B1 EP0072972 B1 EP 0072972B1 EP 19820107287 EP19820107287 EP 19820107287 EP 82107287 A EP82107287 A EP 82107287A EP 0072972 B1 EP0072972 B1 EP 0072972B1
Authority
EP
European Patent Office
Prior art keywords
sliding
switch according
automatic switch
sliding member
contact carrier
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
EP19820107287
Other languages
German (de)
English (en)
Other versions
EP0072972A2 (fr
EP0072972A3 (en
Inventor
Uwe Dr. Dipl.-Ing. Drücker
Eduard Petrus
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
Application filed by Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of EP0072972A2 publication Critical patent/EP0072972A2/fr
Publication of EP0072972A3 publication Critical patent/EP0072972A3/de
Application granted granted Critical
Publication of EP0072972B1 publication Critical patent/EP0072972B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
    • H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
    • H01H77/10—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening
    • H01H77/102—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening characterised by special mounting of contact arm, allowing blow-off movement
    • H01H77/105—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening characterised by special mounting of contact arm, allowing blow-off movement whereby the blow-off movement unlatches the contact from a contact holder
    • 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
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2409—Electromagnetic mechanisms combined with an electromagnetic current limiting mechanism

Definitions

  • the invention relates to a circuit breaker according to the first part of claim 1.
  • Such a self-switch is e.g. known from DE-C-11 67 957.
  • the movable contact carrier which carries the movable contact piece, is firmly connected to a U-shaped pawl, which is supported on a half shaft.
  • the half shaft is attached to the end of a multi-part lock lever of a key switch and transmits the force of a contact pressure spring to the movable contact carrier.
  • the pawl with the half shaft thus forms a spring-loaded latching mechanism for the movable contact carrier.
  • the half-wave slips into the U-shaped pawl, which releases the latching mechanism and the movable contact carrier very quickly, d. H. current limiting, is thrown into its open position. In this position, however, the switch is not yet ready to be switched on again, since the switch lock is still latched.
  • the key switch is only activated by the normal triggers that do not limit the current. Only when the switch lock is also released does the movable contact carrier make a further movement into the open position. The switch is then ready to be switched on again.
  • the known design has a rather complicated lever mechanism with a malfunction-prone half-wave, which is subject to relatively high wear.
  • Another disadvantage is that the movable contact carrier requires two opening movements in order to reach the final opening position.
  • the invention has for its object to provide an insensitive latching mechanism with high mechanical wear resistance and with as few individual components as possible for a circuit breaker of the type mentioned.
  • This object is achieved by the characterizing features of claim 1.
  • the slide piece rests under spring pressure on the projection provided in the area of the sliding surface near the switch lock.
  • the movable contact carrier is thus latched, the required contact pressure being generated simultaneously by the spring-mounted slider.
  • the latching point formed from the projection on the sliding surface and from the slider is released.
  • the release of the latching takes place in that the projection pushes the slider back against the spring force in the direction of the pivot point of the tensioning lever and thus the part surface of the sliding surface extending in the direction of the contacts can slide on the slider until the movable contact carrier has its z. B. has reached a limited end position by a stop. Since the key switch has not yet been released during this process, the lock lever and the tensioning lever with the slider remain in their original position, so that the slider is now at the end of the sliding surface in the area close to the contact. If the switch lock is released, e.g. B.
  • the slider moves from the contact-near area of the sliding surface back into the switch-near area of the sliding surface, so that the switching device is ready to be switched on again, the slider again in front of the projection in the switching lock Area.
  • the design according to the invention requires very few individual components.
  • the latching point formed by the sliding piece and the projection on the sliding surface is less susceptible to malfunction, independent of position and insensitive to vibrations and other influences. This latching point has an extremely high wear resistance.
  • Another advantage is that the movable contact carrier has already reached its full opening angle after the individual latch has been released. This opening angle corresponds approximately to the actuation angle of the switching shaft of the key switch. Since the full opening of the contact system already takes place when the movable contact carrier is spun on, there is a better arc quenching.
  • FIG. 1 shows sectional images
  • Fig. 3 shows a side view.
  • the contact system according to FIGS. 1 to 3 has a fixed contact piece 10 and a movable contact piece 11 which is fastened to a movable contact piece carrier 12.
  • a stop attached to the movable contact piece 11 for the action of an armature (not shown) of a quick-action release is shown.
  • 14 denotes a current supply to the movable contact piece 11.
  • the contact piece carrier 12 is rotatably mounted in a fixed pivot point 15. 16 with a fixed stop for an edge 17 of the contact piece carrier 12 is designated.
  • a tensioning lever 18 is also rotatably mounted, which is connected in an articulated manner via a slide roller 19 to a lock lever 20 of a switching lock 21.
  • the switching shaft of the switching lock 21, not shown in its details, is designated by 22. With 23 the maximum opening angle of the control shaft 22 is designated.
  • the contact piece carrier 12 has at its upper end a kidney-shaped recess 24 which forms a sliding surface 25 for the sliding roller 19 at the edge remote from the fulcrum 15.
  • the sliding surface 25 has a partial surface 26 with a constant distance 27 from the fulcrum 15 in the area close to the contact and a second partial surface 28 with a constant distance 29 from the fulcrum 15 in the area close to the switch lock.
  • the transition from the partial surface 26 to the partial surface 28 takes place with a constantly increasing distance to the pivot point 15, so that a projection 30 is formed on the sliding surface 25.
  • the sliding roller 19 is seated on a hinge pin 31 which passes through the recess 24 and is articulated in the two partial levers 20a, 20b of the lock lever 20.
  • the tensioning lever 18 consists of a lower part 18a, which is mounted in the fulcrum 15, and an upper part 18b, through which the hinge pin 31 passes.
  • the part 18b is provided with a spring 32 and is slidably mounted in the lower part 18a.
  • the upper part 18b has an adjusting screw 33 above the roller 19, with which the force of the spring can be adjusted and thus also the contact pressure.
  • Fig. 1 shows the switch in the on state.
  • the slide roller 19 rests under spring pressure on the projection 30, so that the necessary contact pressure of the movable contact piece on the fixed contact piece 10 is reached.
  • the contact piece carrier 12 is moved in the opening direction 34.
  • the sliding roller 19 is moved in the direction of the pivot point 15 against the force of the spring 32, so that the sliding surface 25 can now slide with its partial surface 28 over the sliding roller 19. Since the partial surface 26 has a constant distance 27 from the fulcrum, there is a uniform sliding between the sliding roller and partial surface 28 up to the end position of the contact piece carrier 12, i.
  • the force of the spring 32 is set so that the slide roller 19 cannot slide over the projection 30 during the switch-on movement. This sliding away only takes place, as explained above, when a short circuit occurs and when the movable contact carrier 12 moves in the opening direction 34 as a result.
  • the lock lever 20 is also provided with an adjusting device 35 with which a desired latch cover can be set. Furthermore is. 1 and 2, the contact carrier 12 is expediently double-walled, the clamping lever 18 being located between the two walls.
  • the slide formed according to the embodiment as a sliding roller 19 usefully can, for. B. also be a spigot.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Push-Button Switches (AREA)
  • Mechanisms For Operating Contacts (AREA)

Claims (10)

1°) Disjoncteur automatique comportant un support de contact mobile (12) qui tourillonne sur un pivot (15) fixe en position, qui peut être manoeuvré par l'intermédiaire d'un verrou d'enclenchement (21) et qui peut être, en outre, engagé par un mécanisme d'engagement sollicité par un ressort, caractérisé par les caractéristiques suivantes:
a. les extrémités libres d'un levier de verrou (20) et d'un levier de contrainte (18), qui tourillonne sur un pivot (15) fixe en position, sont reliées l'une à l'autre, avec articulation, par l'intermédiaire d'une pièce de glissement (19),
b. le support de contact mobile (12) présente une surface de glissement (25) qui court dans la direction de la mise en/hors circuit (34) et qui forme un guide de glissement pour la pièce de glissement (19) qui s'y appuie sous la pression d'un ressort (32),
c. une saillie (30), prévue sur la surface de glissement (25) dans la zone proche du verrou d'enclenchement, constitue avec la pièce de glissement (19) une position d'engagement,
d. l'angle de rotation du levier de contrainte (18) est un peu supérieur à l'angle d'ouverture, limité par une butée (16), du support de contact mobile (12).
2°) Disjoncteur automatique selon la revendication 1, caractérisé en ce que le support de contact (12) présente un évidement (24) de forme à peu près oblongue, pour recevoir la pièce de glissement (19); et en ce que la surface de glissement (25) est formée sur le bord interieur, éloigné du pivot (15) fixe en position, de l'évidement (24) dont l'extrémité proche des contacts et l'extrémité proche du verrou d'enclenchement constituent respectivement une butée de limitation pour le dalet de glissement (19).
3°) Disjoncteur automatique selon la revendication 1 ou la revendication 2, caractérisé en ce que la surface de glissement (25) présente, dans la zone proche du contact, une première surface partielle (26), à distance constante (25) du pivot (15) fixe en position, qui, dans la zone proche du verrou d'enclenchement, se transforme, en formant la saillie (30) et en s'éloignant progressivement du pivot (15) fixe en position, en une seconde surface partielle (26) à distance constante (29) du pivot (15) fixe en position; et en ce que la longueur de la première surface partielle (26) est égale à l'arc d'ouverture du support de contact (12) en cet endroit.
4°) Disjoncteur automatique selon l'une des revendications 1 à 3, caractérisé en ce que le passage de la première surface partielle (26) à la seconde surface partielle (28), avec formation de la saillie (30), se fait sous forme d'un plan oblique.
5°) Disjoncteur automatique selon l'une des revendications 1 à 4, caractérisé en ce que le levier de verrouillage (20) présente deux leviers partiels (20a, 20b) qui enserrent le support de contact mobile (12) et sont reliés l'un à l'autre par l'intermédiaire d'un axe articulé (31) qui traverse l'évidement (24) et porte la pièce de glissement (19); et en ce que le levier de contrainte (18), muni d'un ressort (32), est traversé par l'axe d'articulation (31).
6°) Disjoncteur automatique selon l'une des revendications 1 à 5, caractérisé en ce que le levier de contrainte (18) est constitué d'une partie inférieure (18a) reliée au pivot (15) fixe en position et d'une partie supérieure (18b) traversée par l'axe d'articulation (31); en ce que la partie supérieure (18) coulisse dans la partie inférieure (18a) avec interposition du ressort (32); et en ce que la partie supérieure (18b) est munie d'une vis de réglage (33) pour le réglage de la pression de contact.
7°) Disjoncteur automatique selon l'une des revendications 1 à 6, caractérisé en ce que la position de la pièce de glissement (19) sur la surface de glissement (25) est determinée de façon que dans l'état de mise en circuit, la pièce de glissement (19) s'appuie contre la saillie (30) en produisant une force de contact suffisante.
8°) Disjoncteur automatique selon l'une des revendications 1 à 7, caractérisé en ce que le support de contact (12) est exécuté à double paroi et en ce que le levier de contrainte (18) est disposé entre les deux parois.
9°) Disjoncteur automatique selon l'une des revendications 1 à 8, caractérisé en ce que le levier de verrouillage (20) peut être réglé en longueur par un dispositif de réglage (35).
10°) Disjoncteur automatique selon l'une des revendications 1 à 9, caractérisé en ce que la pièce de glissement (19) est conçue sous forme de galet de glissement ou de téton.
EP19820107287 1981-08-22 1982-08-11 Disjoncteur automatique Expired EP0072972B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3133285 1981-08-22
DE19813133285 DE3133285C2 (de) 1981-08-22 1981-08-22 Selbstschalter

Publications (3)

Publication Number Publication Date
EP0072972A2 EP0072972A2 (fr) 1983-03-02
EP0072972A3 EP0072972A3 (en) 1984-12-19
EP0072972B1 true EP0072972B1 (fr) 1986-06-11

Family

ID=6139902

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19820107287 Expired EP0072972B1 (fr) 1981-08-22 1982-08-11 Disjoncteur automatique

Country Status (2)

Country Link
EP (1) EP0072972B1 (fr)
DE (1) DE3133285C2 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT206253Z2 (it) * 1985-10-18 1987-07-13 Sace Spa Interruttore elettrico limitatore di corrente ad apertura dei contatti per repulsione elettrodinamica.
US4998081A (en) * 1989-05-18 1991-03-05 Siemens Energy & Automation, Inc. Power interrupter with force-sensitive contact latch
DE4022078A1 (de) * 1990-07-10 1992-01-16 Siemens Ag Leistungsschalter mit unabhaengiger verklinkungseinrichtung des bewegbaren schaltkontaktes
DE4337344B4 (de) * 1993-11-02 2005-08-25 Moeller Gmbh Strombegrenzendes Kontaktsystem für Leistungsschalter
CZ300885B6 (cs) * 2002-01-22 2009-09-02 Oez S.R.O. Záves tažné pružiny, zejména pro silové pružiny u spínacích prístroju

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1413974A1 (de) * 1962-03-12 1969-02-06 Licentia Gmbh Selbstschalter
FR1372874A (fr) * 1963-10-18 1964-09-18 Licentia Gmbh Interrupteur automatique à ouverture électrodynamique
DE1513341A1 (de) * 1965-12-29 1969-12-18 Licentia Gmbh Selbstschalter mit strombegrenzendem Kontaktsystem
US3562680A (en) * 1969-09-17 1971-02-09 Fuji Electric Co Ltd Circuit breaker
DE2128633A1 (de) * 1971-06-09 1973-01-04 Bbc Brown Boveri & Cie Selbstschalter mit magnetischer und elektrodynamischer kurzschlussausloesung
DE2231179A1 (de) * 1972-06-26 1974-01-17 Bbc Brown Boveri & Cie Leistungsschalter in ein- oder mehrpoliger ausfuehrung
JPS5942935B2 (ja) * 1978-07-05 1984-10-18 富士電機株式会社 回路しゃ断器

Also Published As

Publication number Publication date
DE3133285A1 (de) 1983-03-10
EP0072972A2 (fr) 1983-03-02
EP0072972A3 (en) 1984-12-19
DE3133285C2 (de) 1984-05-30

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