EP0046841B2 - Schaltmechanismus für Leitungsschutzschalter - Google Patents

Schaltmechanismus für Leitungsschutzschalter Download PDF

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Publication number
EP0046841B2
EP0046841B2 EP81103221A EP81103221A EP0046841B2 EP 0046841 B2 EP0046841 B2 EP 0046841B2 EP 81103221 A EP81103221 A EP 81103221A EP 81103221 A EP81103221 A EP 81103221A EP 0046841 B2 EP0046841 B2 EP 0046841B2
Authority
EP
European Patent Office
Prior art keywords
lever
contact
ratchet
operating mechanism
leg
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
EP81103221A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0046841B1 (de
EP0046841A1 (de
Inventor
Günter Böker
Dieter Kropp
Georg Schedler
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.)
OFFERTA DI LICENZA AL PUBBLICO
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6110064&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0046841(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Priority to AT81103221T priority Critical patent/ATE9422T1/de
Publication of EP0046841A1 publication Critical patent/EP0046841A1/de
Publication of EP0046841B1 publication Critical patent/EP0046841B1/de
Application granted granted Critical
Publication of EP0046841B2 publication Critical patent/EP0046841B2/de
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2300/00—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
    • H01H2300/046—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H using snap closing mechanisms
    • H01H2300/048—Snap closing by latched movable contact, wherein the movable contact is held in a minimal distance from the fixed contact during first phase of closing sequence in which a closing spring is charged

Definitions

  • the invention relates to a switching mechanism for circuit breakers, in which an operating knob acts on a spring-loaded contact lever via a ratchet lever and forms a latching point with the ratchet lever with the aid of a bracket articulated on it.
  • the object of the invention is to improve the switching mechanism mentioned at the outset in such a way that it requires the lowest possible release forces with the least amount of components and achieves short switch-off times. It should also be easy to install and take up little space. Furthermore, the mechanism should be expandable in a simple manner to generate a sudden contact actuation.
  • ratchet lever and the contact lever are pivotally mounted as a pre-assembled unit on a common axis fixed to the housing and the ratchet lever acts on the contact lever in the contact closing direction via a leg spring, with a release lever mounted separately in the housing being provided for the release.
  • the mechanism can be designed in such a way that the pawl lever acts on the contact lever in the closed position on the contact lever in the contact-closing direction via one leg of the leg spring that wraps around the common axis and is supported on the housing with the other leg.
  • the ratchet lever can also be clamped to the contact lever via a spring which generates the contact pressure in the switched-on position, a second leg spring acting on the ratchet lever with one end, wrapping around the common axis and supporting the other end on a housing stop, is provided for switching off .
  • a locking lever which temporarily locks the contact lever during the switching-on process in the open position and on which the operating knob acts in the unlocking direction is provided on the axis of the release lever.
  • the switching mechanism according to FIGS. 1 to 3 consists of a double-armed contact lever 1, which forms a contact piece 2 at a lever arm end, which cooperates with a stationary contact 3.
  • the contact lever is mounted together with a jack arm 4, which is also double-armed, on an axle 5 fixed to the housing.
  • a leg spring 6, which also serves as a switch-off and contact pressure spring, wraps around the axis 5 and engages with one leg 6a between the latch lever 4 and the contact-side lever arm of the contact lever 1, while the other leg 6b is supported on a housing stop 7.
  • the pawl lever 4 acts on the leg spring 6 with an attachment 4a and, with this attachment, engages an angled portion 1a of the contact lever 1.
  • the contact lever has a U-shaped cross-sectional profile at its contact-side end, so that the leg 6a of the leg spring 6 and also the contact-side lever arm of the ratchet lever is located between the side cheeks of the contact lever.
  • the contact lever 1 forms, together with the ratchet lever 4, the leg spring 6 and the axis 5, a unit which can be preassembled and can therefore be used completely in the switch housing.
  • a steel ball 4b is attached, preferably welded, to the latching end of the latch lever, which together with an angled portion 8a of a bracket 8 forms the latching point.
  • the bracket 8 is articulated on an operating knob 9 and is also still under the action of a release lever 11 which can be pivoted about an axis 10 fixed to the housing.
  • the release lever interacts with the bracket 8 with a lever arm 11a.
  • Coupling means 14 for unlatching adjacent mechanisms are also provided on this leg 11b.
  • the leg of the contact lever 1 remote from the contact can also influence the release lever 11 on its leg 11a.
  • the steel ball 4b of the ratchet lever is latched to the bend 8a of the bracket 8.
  • the extension 4a of the ratchet lever presses on the leg 6a of the leg spring, which in turn rests against the rear of the web 1b of the contact lever and holds it in the contact closed position.
  • the contact pressure for the closed position is thus generated by the leg 6a of the leg spring.
  • the plunger 12 of the release coil 13 strikes the leg 11b of the release lever and rotates it counterclockwise, so that the leg 11a presses the bracket 8 away from the steel ball 4b of the ratchet lever, thereby releasing the latch.
  • the leg 6a of the leg spring now also rotates counterclockwise via the shoulder 4a of the ratchet lever until it strikes the bend 1 a of the contact lever 1 and takes it along.
  • the contact point 2, 3 is thus opened.
  • the trigger lever strikes the contact lever with a projection 11c and accelerates the contact opening by this impact action.
  • the control knob also changes into the switch-off position shown in FIG. 2 by a spring, not shown.
  • the mechanism is switched on again in the manner (FIG. 3) that the manual control knob 9 is pivoted counterclockwise, as a result of which the stirrup 8 is meanwhile bent lung 8a rests against the steel ball 4b, takes the ratchet lever 4, which in turn presses with the shoulder 4a on the leg 6a of the leg spring.
  • the contact lever is taken along and guided into the closed position.
  • the hand control knob is pivoted further into the position shown in FIG. 1, the leg spring 6 is further pretensioned.
  • the approach 4a of the ratchet lever lifts off from the bend 1 of the contact lever, so that the distance between the attachment and the bend achieved in the switched-on position is available as a burn-up reserve.
  • a double-armed, cross-sectionally provided with a U-shaped profile contact lever 20 is also provided, which forms a unit together with a one-armed latch lever 23 and a common axis 24 and a spring 25.
  • Contact lever and pawl lever are braced against each other by the spring 25, the spring resting on the one hand on the pawl lever and on the other hand on the back of the contact lever pressing the pawl lever in the released state with an edge 23a against the back 20a of the contact lever.
  • the axis 24 of the contact lever pawl lever unit is fixed in the switch housing, not shown.
  • the contact lever interacts with its contact piece 21, with a stationary contact piece 22.
  • the spring 25 forms the contact pressure spring, while a further spring 26, which acts on the pawl lever 23, loops around the axis 24 and is supported with the other end on a housing stop 27, acts as an opening spring.
  • the latching-side end 23b of the latch lever 23 forms a spherical cap which, as in the embodiment according to FIGS. 1 to 3, cooperates with an angled portion 8a of a bracket 8.
  • the bracket 8 is articulated to an operating knob 9 as in the embodiment according to FIGS. 1 to 3 and is under the action of a release lever 11 which can be pivoted about an axis 10 fixed to the housing.
  • the release lever interacts with the bracket 8 with a lever arm 11.
  • a locking lever 28 which can be locked with a hook-shaped lever arm 28a on a pin 29 attached to the contact lever.
  • the pin 29 is only inserted into two aligned openings of the cheeks of the contact lever. It passes through an elongated hole 23c provided in the ratchet lever and is guided between the housing walls in a manner not shown.
  • the other lever arm 28b of the locking lever interacts with a pin 9a of the control knob 9.
  • a spring 30 wrapping around the axis 10 acts with the one end on the locking lever in a counterclockwise direction, while it engages with the other end on the release lever in a clockwise direction.
  • the electromagnetic short-circuit release takes place as in the exemplary embodiment according to FIGS. 1 to 3.
  • the switch goes into the position shown in FIG. 6.
  • the hand control knob 9 is pivoted counterclockwise, as a result of which the bracket 8 takes the pawl lever and thus the contact lever at the same time.
  • the contact lever 20 is held on the pin 29 by the hook-like lever arm 28a of the latching lever 28, so that there is initially no contact with the stationary contact 22 (FIG. 5).
  • the pin 9a engages behind the lever arm 28b of the latching lever and pivots it clockwise, so that the hook-like lever arm 28a finally releases the pin 29 and the contact lever jumps into the switched-on position by the bias of the spring 25.
  • the invention is particularly advantageous because the contact lever ratchet lever unit can be mounted outside the device and installation in the switch housing is possible in the tensioned state.
  • the mechanism requires relatively few individual parts that can be manufactured and assembled fully automatically.
  • the latching lever can be inserted either in the embodiment according to FIGS. 1 to 3 or in the embodiment according to FIGS. 4 to 6 if the contact and latch levers are provided with a corresponding receptacle for the locking pin.
  • the mechanism according to FIGS. 4 to 6 can also be used without a locking lever if the sudden contact actuation is not necessary.

Landscapes

  • Mechanisms For Operating Contacts (AREA)
  • Breakers (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
EP81103221A 1980-08-21 1981-04-29 Schaltmechanismus für Leitungsschutzschalter Expired EP0046841B2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81103221T ATE9422T1 (de) 1980-08-21 1981-04-29 Schaltmechanismus fuer leitungsschutzschalter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3031482 1980-08-21
DE19803031482 DE3031482A1 (de) 1980-08-21 1980-08-21 Schaltmechanismus fuer leitungsschutzschalter

Publications (3)

Publication Number Publication Date
EP0046841A1 EP0046841A1 (de) 1982-03-10
EP0046841B1 EP0046841B1 (de) 1984-09-12
EP0046841B2 true EP0046841B2 (de) 1989-11-08

Family

ID=6110064

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81103221A Expired EP0046841B2 (de) 1980-08-21 1981-04-29 Schaltmechanismus für Leitungsschutzschalter

Country Status (3)

Country Link
EP (1) EP0046841B2 (enrdf_load_stackoverflow)
AT (1) ATE9422T1 (enrdf_load_stackoverflow)
DE (2) DE3031482A1 (enrdf_load_stackoverflow)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3335887C2 (de) * 1983-10-03 1986-08-07 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Schaltmechanismus für Leitungsschutzschalter
AT378284B (de) * 1983-11-28 1985-07-10 Felten & Guilleaume Ag Oester Schaltmechanik fuer leitungsschutzschalter
US4628288A (en) * 1984-05-15 1986-12-09 Mitsubishi Denki Kabushiki Kaisha Circuit interrupter
US4641001A (en) * 1984-06-15 1987-02-03 Mitsubishi Denki Kabushiki Kaisha Circuit interrupter
JPH0119315Y2 (enrdf_load_stackoverflow) * 1984-09-19 1989-06-05
US4743878A (en) * 1985-05-01 1988-05-10 Mitsubishi Denki Kabushiki Kaisha Circuit interrupter
DE3530635A1 (de) * 1985-08-28 1987-03-12 Bbc Brown Boveri & Cie Schaltwerk fuer einen elektrischen schalter
CH670330A5 (enrdf_load_stackoverflow) * 1986-07-25 1989-05-31 Weber Ag
FR2610760B1 (fr) * 1987-02-10 1993-05-14 Serd Soc Et Realisa Disjonct Interrupteur automatique multipolaire basse-tension a commande manuelle
EP0369807A3 (en) * 1988-11-18 1991-08-21 National Electrical Designs Limited A miniature circuit breaker
FR2646015B1 (fr) * 1989-04-18 1991-06-07 Gec Unelec Disjoncteur electrique
DE4040301A1 (de) * 1990-12-17 1992-07-02 Geyer Gmbh & Co Christian Schaltmechanismus
IT1302051B1 (it) * 1998-09-08 2000-07-20 Gewiss Spa Interruttore elettrico magnetotermico.
ATE315832T1 (de) * 1998-11-19 2006-02-15 Sace Spa Thermomagnetischer schutzschalter
DE10133879B4 (de) 2001-07-12 2004-07-08 Siemens Ag Schaltgerät mit einem Schaltschloss
CZ300092B6 (cs) * 2001-09-20 2009-01-28 Moeller Gebäudeautomation KG Spínací mechanika pro ochranný spínac
DE102005029059A1 (de) * 2005-06-23 2006-12-28 Abb Patent Gmbh Schaltgerät, Leitungsschutzschalter und dergleichen
SI23333B (sl) * 2010-03-08 2014-12-31 Eti Elektroelement D.D. Varnostno električno stikalo
CN110824348A (zh) * 2019-11-20 2020-02-21 国网辽宁省电力有限公司葫芦岛供电公司 一种手车式真空断路器梅花圆触头可调节式对接装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1192730B (de) * 1962-03-09 1965-05-13 Licentia Gmbh Schaltmechanismus fuer Selbstschalter
DE2047223C3 (de) * 1970-09-25 1974-04-11 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Schaltmechanismus für Installationsselbstschalter
CH543173A (de) * 1971-09-30 1973-10-15 Carl Maier & Cie Elek Sche Sch Leitungsschutzschalter
US3872273A (en) * 1973-10-15 1975-03-18 Ite Imperial Corp Switchgear operating mechanism overcenter spring toggle with latched restraint
DE2504954B2 (de) * 1975-02-06 1976-12-02 Fa. Heinrich Kopp, Inh. Theodor Simoneit, 8756 Kahl Mechanisches sprungwerk, insbesondere fuer kleine hochleistungs-selbstschalter
FR2331879A1 (fr) * 1975-11-13 1977-06-10 Legrand Sa Disjoncteur, en particulier disjoncteur multipolaire
DE2943696C2 (de) * 1979-10-30 1982-06-24 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Schaltmechanismus für Leitungsschutzschalter

Also Published As

Publication number Publication date
EP0046841B1 (de) 1984-09-12
DE3031482A1 (de) 1982-04-01
DE3031482C2 (enrdf_load_stackoverflow) 1988-03-31
EP0046841A1 (de) 1982-03-10
DE3165952D1 (en) 1984-10-18
ATE9422T1 (de) 1984-09-15

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