EP0147629B1 - Disjoncteur de protection - Google Patents

Disjoncteur de protection Download PDF

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Publication number
EP0147629B1
EP0147629B1 EP84114175A EP84114175A EP0147629B1 EP 0147629 B1 EP0147629 B1 EP 0147629B1 EP 84114175 A EP84114175 A EP 84114175A EP 84114175 A EP84114175 A EP 84114175A EP 0147629 B1 EP0147629 B1 EP 0147629B1
Authority
EP
European Patent Office
Prior art keywords
lever
switch
pivot lever
handle
switch according
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
EP84114175A
Other languages
German (de)
English (en)
Other versions
EP0147629A1 (fr
Inventor
Udo Geus
Hajo Dipl.-Ing. Lindner
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.)
Lindner Fabrik Elektrischer Lampen und Apparate GmbH
Original Assignee
Lindner Fabrik Elektrischer Lampen und Apparate 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
Priority claimed from DE19833347097 external-priority patent/DE3347097A1/de
Application filed by Lindner Fabrik Elektrischer Lampen und Apparate GmbH filed Critical Lindner Fabrik Elektrischer Lampen und Apparate GmbH
Priority to AT84114175T priority Critical patent/ATE25789T1/de
Publication of EP0147629A1 publication Critical patent/EP0147629A1/fr
Application granted granted Critical
Publication of EP0147629B1 publication Critical patent/EP0147629B1/fr
Expired legal-status Critical Current

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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
    • H01H71/10—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 manually operated circuit breaker with the features of the preamble of claim 1.
  • Such a switch is known from DE-C-25 04 954 and has a switch lock which can be locked and unlocked by a handle designed as a rotary knob and on which a magnet and / or bimetallic release device acts.
  • the switching lock in turn essentially consists of two levers, namely a pivot lever and a release lever cooperating with it, both of which are mounted on a common axis of rotation fixed to the housing and can be pivoted about this, the pivot lever for transmitting the pivoting movement of the handle to an elastically coupled to it, is provided in the switch housing pivotable and interacting with a fixed contact movement contact arm.
  • the unlatching lever is actuated by the release devices and has at one end a latching point which serves to guide or release a transmission slide which acts as a knee joint and which transmits the force between the handle and the switching mechanism.
  • a hook-like projection on the unlatching lever engages over the transmission slide, which is designed as a wire bracket, and fixes it to a sliding inclined surface of the pivot lever, which is used for power transmission.
  • the pivoting lever and the unlatching lever move coaxially, so that the latching of the wire bracket end over the hook-like projection remains unchanged. If the release lever is rotated about the axis common to the two levers by means of a release device, the end of the wire bracket on the switch lock side is released so that it slides over the sliding inclined surface attached to the swivel lever, thereby rendering the support ineffective and the switch lock jumping into the off position.
  • the switching lock is therefore extremely sensitive to the smallest manufacturing tolerances, which unintentionally shift the compromise found between necessary, secure locking and easy triggering in one direction or the other.
  • the invention is based on the object of designing a circuit breaker in such a way that the latching between the transmission element interacting with the handle and the switching mechanism securely latches at the start of a switch-in pivoting movement without adversely affecting the speed of the unlatching, all parts being simple to produce and should be installable. This object is achieved by the characterizing features of claim 1.
  • the unlatching lever carries out a rotary-sliding movement in the housing, which leads to the latching element, which is designed as a latching lug, being closed.
  • the beginning of the switch-in swivel movement extends far beyond the movement path of the transmission bracket end to be latched, but withdraws more and more from the movement path in the course of the switch-in swivel movement, so that the mutual overlap causing the latching occurs at the end of the switch-on swivel movement, ie in the switch-on position a necessary minimum is reduced.
  • a further retraction movement of the locking lug, which ultimately causes the switch to be triggered, is only caused by the release elements (magnetic release, bimetallic release), which on the free end of the latch designed as a one-armed lever acts lever and rotates it further about its bearing axis arranged on the pivot lever.
  • the critical area of coverage of the elements to be mutually latched is thus only established immediately before or when the switch-on position is reached.
  • the switching behavior of the circuit breaker is further improved in that, according to claim 2, the contact arm is mounted exclusively on the pivot lever. Additional drive-transmitting means can be completely dispensed with, the contact arm is guided to the mating contact fixed to the housing in synchronism with the initial switch-on pivoting movement of the pivoting lever and lies there during. the further transfer of the handle to the switch-on position under high contact pressure.
  • the contact arm has an L-shaped angle bend at its fastening end, the end of which is articulated to the pivot lever by positive locking and the inside of the angle is acted upon by a compression spring in the direction of the pivot lever.
  • a compression spring in the direction of the pivot lever.
  • Self-cleaning of the contact surfaces is achieved by a sliding process that takes place between the fixed contact and the contactor during the last switch-on pivoting phase.
  • this is due to the fact that the contact arm not only rotates, but also rotates and rotates in the housing when it is lifted out of its form-fitting bed in the swivel lever.
  • a possibly welded contact point is not only torn open in the direction of movement of the contact arm during this movement sequence, but is also additionally broken open by the shear force acting transversely to the direction of movement.
  • the wall thickness (and thus the mass) of the unlatching lever can be further reduced without unnecessarily weakening the central area, which ensures secure contact with the projection.
  • the projecting web fulfills a double function, since it also serves as a counter bearing for a torsion spring, which presses the unlatching against the fixed housing projection.
  • Claims 11 and 12 teach a particularly advantageous arrangement of the parts interacting with the switch lock in relation to other switch parts, with claim 14 a quick return of the handle to the switch-off / release position to display the respective switching state is achieved.
  • the circuit breaker 1 consists essentially of a switch housing 2, from the upper side 3 of which a handle 4, designed as a rotary lever, projects for manual actuation of the circuit breaker.
  • the circuit breaker 1 In its interior 5, the circuit breaker 1 has a switch lock 6, which is arranged directly under the top 3 of the switch housing 2.
  • a magnetic release device 7 and a bimetal release device 8 are provided.
  • the pivoting end 12 of the bimetallic release device 8 is connected to a (movement) contact arm 13, which cooperates electrically with a fixed contact 14, which in turn is electrical with the magnetic release device 7, via a wire 11 to which the arc guide plate 39 is connected electrically and mechanically connected is.
  • the closed current path thus runs from the screw terminal 9 via the bimetallic release device 8, the wire 11, the contact arm 13, the fixed contact 14, and the magnetic release device 7 for screw terminal 10.
  • the switching lock 6 In order to control the movement of the contact arm 13, it is attached to the switching lock 6 with its fastening end 15.
  • This consists in particular of a pivot lever 17 rotatably mounted in the switch housing 2 by means of an axis 16 and a separately mounted release lever 18.
  • the latter is mounted on the pivot lever 17 at a distance from its axis 16 by means of a separate pivot axis 19 and forms a two-link chain with the pivot lever 17.
  • a torsion spring 20 which is guided around the axis of rotation 19 exerts a counterclockwise torque on the unlatching lever 18 with respect to the pivot lever 17.
  • the unlatching lever 18 is supported by means of a web 21 on a contact projection 22 which protrudes from the side wall of the housing against the switching mechanism 6.
  • a latching point in the form of a detent 24 projecting upwards from the unlatching lever 18, on which the switch-side end 25 of a transmission bracket 26 is locked, which is fastened with its second end 27 to the area of the handle 4 inside the housing that it is guided around the axis 28 of the handle 4 when it is pivoted and, in the switched-on position together with the inner part of the handle 4, forms a toggle lever which is locked beyond the dead center.
  • the switch lock end 25 of the transmission bracket is guided in a longitudinal groove 29 of the pivot lever 17 during the switch-on, switch-off and trigger movement.
  • the magnetic and bimetallic release devices 7, 8 act on the lower end 30 of the unlatching lever 18, which is designed as a one-armed lever, a plunger 31 of the magnetic release device 7 acting directly on the lower end and the movement of the pivoting end 12 of the bimetallic release device 8 by means of a connecting slide 32 lower end 30 of the release lever 18 is transmitted.
  • the fastening end 15 of the contact arm 13 is provided with an L-shaped bend 33 which is pressed into a form-fitting recess 35 of the pivot lever 17 by means of a compression spring 34.
  • An extinguishing chamber antechamber 36 is provided in the lower area of the circuit breaker and is delimited on one side by an extinguishing chamber 37.
  • An arc guide plate 39 leads from the underside 38 of the quenching chamber 37 in the direction of the switch lock and forms a stop 40 for the contact arm 13 which is in the release position.
  • An adjusting device 42 provided with an adjusting screw 41 is used to adjust the bimetallic release device 8.
  • the second end 27 of the transmission bracket 26 has migrated beyond the straight connecting line (dead center line) between the center of the axis 28 and the end 25 and thus exerts a clockwise torque on the handle, which is caused by the force the compression spring 34 is generated via the latching point (locking lug 24).
  • the locking lug 24 releases the end 25 of the transmission bracket 26, so that the two levers (swivel lever 17, unlatching lever 18) snap back suddenly and the Wegkon tact area between contact arm 13 and fixed contact 14 is torn. A resulting arc is dissipated into the quenching chamber 37 via the arc guide plate 39. Due to the prevailing spring forces of the springs 34 and a further torsion spring 44 located in the handle 4, the switching lock 6 will return to its switch-off position in time before the handle 4. The handle 4, which rotates somewhat more slowly, pulls the transmission bracket 26 back into the switched-off position, its end 25 sliding over a sliding inclined surface 43 on the rear side of the locking lug 24 and pressing it briefly downward against the force of the torsion spring 20.

Landscapes

  • Breakers (AREA)

Claims (14)

1. Disjoncteur pouvant être actionné manuellement, avec les caractéristiques suivantes :
le disjoncteur (1) présente un dispositif de déclenchement magnétique et/ou à bimétal (7, 8) agissant sur une serrure de commande (6) pouvant être verrouillée et déverrouillée par un élément de manipulation (4),
la serrure de commande (6) est constituée essentiellement par un levier pivotant (17) supporté à rotation dans un boîtier de commutateur (2) et un levier de déblocage (18) coopérant avec ce levier pivotant (17),
le levier pivotant (17) transmet le mouvement pivotant de l'élément de manipulation (4) à un bras de contact (13) qui lui est couplé élastiquement, pouvant pivoter dans le boîtier de commutateur (2) et coopérant avec un contact fixe (14),
le levier de déblocage (18) est sollicité par le dispositif magnétique et/ou à bimétal (7, 8) et est doté d'une zone d'encliquetage pour un étrier de transmission (26) agissant à la façon d'une genouillère entre l'élément de manipulation (4) et la serrure de commande (6), caractérisé par les caractéristiques suivantes :
le levier de déblocage (18) est réalisé en tant que levier situé parallèlement à côté du levier pivotant (17), est supporté sur un axe de rotation distinct (19) agencé sur le levier pivotant (17) avec un écartement par rapport à son axe (16), et forme conjointement avec le levier pivotant (17), une chaîne à double articulation, -
le levier de déblocage (18) s'appuie dans sa zone médiane (nervure 21) sur une saillie de rencontre (22) solidaire du boîtier, qui est agencée à une certaine distance de l'axe (16) du levier pivotant (17),
l'étrier de transmission (26) est guidé positivement par son extrémité côté serrure de commande (25) dans une rainure longitudinale (29) du levier pivotant (17) suivant la direction de sollicitation et agit alors directement sur la zone d'encliquetage réalisée en tant qu'appendice de verrouillage (24) faisant saillie vers le haut du levier de déblocage (18),
l'appendice de verrouillage (24) pénètre lors du mouvement de pivotement de fermeture du levier pivotant (17), avec un degré de recouvrement décroissant, dans la voie de déplacement fixée par la rainure longitudinale (29), de l'étrier de transmission (26) et libère celui-ci lors du mouvement pivotant de déclenchement du levier de déblocage (18).
2. Disjoncteur suivant la revendication 1, caractérisé en ce que le bras de contact (13) est supporté exclusivement sur le levier pivotant (17) et est enfoncé par son extrémité de fixation (15), au moyen d'un ressort de pression (34) avec liaison de forme dans un évidement à liaison de forme (35) du levier pivotant (17).
3. Disjoncteur suivant la revendication 2, caractérisé en ce que le bras de contact (13) est doté à son extrémité de fixation (15) d'un pliage angulaire en forme de L (33), dont la face interne de l'angle est sollicitée par le ressort de pression (34).
4. Disjoncteur suivant l'une quelconque des revendications précédentes, caractérisé en ce que la zone de contact du bras de contact (13) glisse avec une pression de contact élevée sur le contact fixe, suivant la direction longitudinale du bras de contact, lors du transfert de l'élément de manipulation (4) de la position de coupure à celle de fermeture.
5. Disjoncteur suivant l'une quelconque des revendications précédentes, caractérisé en ce que le bras de contact (13) est tiré suivant la direction longitudinale du bras de contact au début du transfert de l'élément de manipulation (4) de la position de fermeture à la position de coupure.
6. Disjoncteur suivant l'une quelconque des revendications précédentes, caractérisé en ce que l'axe de rotation distinct (19) du levier de déblocage (18) est agencé sur le côté opposé à l'élément de manipulation (4), du levier pivotant (17).
7. Disjoncteur suivant l'une quelconque des revendications précédentes, caractérisé en ce que l'appendice de verrouillage (24) est doté sur sa face dorsale opposée à l'élément de manipulation (4), d'une surface d'engagement glissant oblique (43).
8. Disjoncteur suivant l'une quelconque des revendications précédentes, caractérisé en ce que l'appendice de verrouillage (24) ne recouvre que partiellement la rainure longitudinale (29) dans le sens transversal en position de fermeture.
9. Disjoncteur suivant l'une quelconque des revendications précédentes, caractérisé en ce que le levier de déblocage (18) présente dans sa zone médiane, une nervure (21) faisant saillie contre une paroi latérale du boîtier, pour la sollicitation de la saillie de rencontre (22), cette dernière étant réalisée en tant que saillie de boîtier.
10. Disjoncteur suivant la revendication 9, caractérisé en ce que la face dorsale opposée à la saillie de rencontre (22), de la nervure (21) est sollicitée par une branche d'un ressort de torsion (20) sous pression, dont l'autre branche s'appuie sur le levier pivotant (17).
11. Disjoncteur suivant l'une quelconque des revendications précédentes, caractérisé en ce que le bras de contact (13) pénètre par son extrémité libre dans une anti-chambre (36) de la chambre d'extinction.
12. Disjoncteur suivant l'une quelconque des revendications précédentes, caractérisé en ce que le bras de contact (13) s'applique en position de déclenchement-coupure contre une tôle de guidage d'arc (39), de telle sorte que la serrure de commande (6) rencontre indirectement la butée (40) lors du mouvement de coupure.
13. Disjoncteur suivant l'une quelconque des revendications 2 à 12, caractérisé en ce que le ressort de pression (34) s'appuie sur l'extrémité supérieure dirigée vers la serrure de commande (6), de la tôle de guidage d'arc (39).
14. Disjoncteur suivant l'une quelconque des revendications précédentes, caractérisé en ce que l'élément de manipulation (4) est mis sous précontrainte dans la position de déclenchement-coupure par un autre ressort de torsion (44) disposé à l'intérieur de lui.
EP84114175A 1983-12-17 1984-11-23 Disjoncteur de protection Expired EP0147629B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84114175T ATE25789T1 (de) 1983-12-17 1984-11-23 Schutzschalter.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3345699 1983-12-17
DE3345699 1983-12-17
DE3347097 1983-12-27
DE19833347097 DE3347097A1 (de) 1983-12-27 1983-12-27 Schutzschalter

Publications (2)

Publication Number Publication Date
EP0147629A1 EP0147629A1 (fr) 1985-07-10
EP0147629B1 true EP0147629B1 (fr) 1987-03-04

Family

ID=25816525

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84114175A Expired EP0147629B1 (fr) 1983-12-17 1984-11-23 Disjoncteur de protection

Country Status (3)

Country Link
EP (1) EP0147629B1 (fr)
DE (1) DE3462562D1 (fr)
GR (1) GR81242B (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2589627B1 (fr) * 1985-10-31 1988-08-26 Merlin Gerin Mecanisme de commande pour disjoncteur electrique a basse tension
CH670330A5 (fr) * 1986-07-25 1989-05-31 Weber Ag
IT1275644B1 (it) * 1994-10-18 1997-10-17 Bticino Spa Interruttore automatico ad elevate prestazioni
JP3824124B2 (ja) * 1999-08-04 2006-09-20 富士電機機器制御株式会社 回路遮断器の開閉機構
CN109509689B (zh) * 2017-09-14 2024-03-26 浙江正泰电器股份有限公司 开关电器的操作机构

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2504954B2 (de) * 1975-02-06 1976-12-02 Fa. Heinrich Kopp, Inh. Theodor Simoneit, 8756 Kahl Mechanisches sprungwerk, insbesondere fuer kleine hochleistungs-selbstschalter
DE7500060U (de) * 1975-01-03 1975-05-22 Boshof R Leitungsschutzschalter in Schmalbauweise und niedriger Bauart
DE3038511A1 (de) * 1980-10-11 1982-06-03 Ellenberger & Poensgen Gmbh, 8503 Altdorf Ueberstromschutzschalter
DE3114717C2 (de) * 1981-04-11 1987-04-30 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Unterspannungsauslöser für einen Leitungsschutzschalter
DD204343A1 (de) * 1981-08-13 1983-11-23 Wolfgang Suess Leitungsschutzschalter in schmalbauweise

Also Published As

Publication number Publication date
EP0147629A1 (fr) 1985-07-10
GR81242B (en) 1985-04-16
DE3462562D1 (en) 1987-04-09

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