EP1146534B1 - Mécanisme de commutation pour un disjoncteur - Google Patents

Mécanisme de commutation pour un disjoncteur Download PDF

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Publication number
EP1146534B1
EP1146534B1 EP00890116A EP00890116A EP1146534B1 EP 1146534 B1 EP1146534 B1 EP 1146534B1 EP 00890116 A EP00890116 A EP 00890116A EP 00890116 A EP00890116 A EP 00890116A EP 1146534 B1 EP1146534 B1 EP 1146534B1
Authority
EP
European Patent Office
Prior art keywords
switching
ratchet
contact
rotation
rotational axis
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
EP00890116A
Other languages
German (de)
English (en)
Other versions
EP1146534A1 (fr
Inventor
Alfred Ing. Nyzner
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.)
Felten & Guilleaume KG
Original Assignee
Felten & Guilleaume 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 to EP00890116A priority Critical patent/EP1146534B1/fr
Priority to ES00890116T priority patent/ES2170047T3/es
Priority to DE50000092T priority patent/DE50000092D1/de
Priority to SI200030010T priority patent/SI1146534T1/xx
Priority to PT00890116T priority patent/PT1146534E/pt
Application filed by Felten & Guilleaume KG filed Critical Felten & Guilleaume KG
Priority to AT00890116T priority patent/ATE211581T1/de
Priority to DK00890116T priority patent/DK1146534T3/da
Publication of EP1146534A1 publication Critical patent/EP1146534A1/fr
Application granted granted Critical
Publication of EP1146534B1 publication Critical patent/EP1146534B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01H71/002—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00 with provision for switching the neutral conductor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/18—Contacts characterised by the manner in which co-operating contacts engage by abutting with subsequent sliding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/22—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact
    • H01H1/221—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member
    • H01H2001/223—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member using a torsion spring
    • 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 switching mechanism for a circuit breaker, the two together has switching switching paths, each of which is movable, on a switching bridge Have fixed contact, with a mechanical axis of rotation fixed to the housing pivotally mounted carrier is provided, which is a normal to the mechanical axis of rotation has extending partition, on the two side surfaces of which a cylinder, a system stop concentric to the mechanical axis of rotation and a leg rest It is molded onto which cylinder the switching bridges with their bores and torsion springs are placed with their windings, so that the longitudinal axes of the switching bridge axes of rotation form, the first leg of the torsion springs on the switching bridges and the second legs rest on the leg supports, with which the switching bridges are constantly in Direction of the investment strokes, which have different strengths are, one at the upper end of the intermediate wall opposite the cylinders Is formed on which the first end of a helical compression spring is placed, the second end of which is supported on the housing, furthermore a
  • a switching mechanism of this type has become known from EP-B1-696 041 .
  • This granted patent teaches or expressly states in its claim 1 that the mechanical axis of rotation is aligned coaxially to the switching bridge axis of rotation.
  • this is achieved in that the switching bridge axes of rotation in the direction the movable contacts are offset from the mechanical axis of rotation.
  • the re-ignition voltage of two arcs lying in series to one another is significantly higher than the re-ignition voltage of a single arc, so that the simultaneous opening of the two switching paths according to the invention means that the short-circuit current can be finally interrupted earlier than if, as in EP-B1-696 041 , only one initially of the two switching sections is opened.
  • a second factor, which is essential for the rapid extinguishing of an arc driven by an alternating voltage, is to open the arc running distance as quickly as possible over great length. Since with the design of the switching mechanism according to the invention a simultaneous disconnection of the short-circuit circuit at two points - and thus the formation of two arcs in series - is achieved, the entire arc running distance is from the outset twice as long as when the circuit is opened at only one point. During the opening movement of the movable contact pieces, two arcing paths are opened at the same time, which means that the entire arcing path to be bridged by the current to be switched off is opened twice as fast as in the case of a switching mechanism according to EP-B1-696 041, where initially only one Arc is formed.
  • the moving contacts must move at such an angle during the opening movement be pivoted relative to the fixed contacts, that in the OFF position movable from the fixed contacts in one a puncture-proof Interruption-ensuring distance are arranged.
  • switching bridge axis of rotation is arranged coaxially to the mechanical axis of rotation, as in EP-B1-696 041 , it is associated with the fact that the switching bridges extend over the entire distance between the movable contacts and the mechanical axis of rotation.
  • the switching bridge axes of rotation in the direction of the movable contacts offset from the mechanical axis of rotation, so are the switching bridges are significantly shorter.
  • the switching mechanism shown in this document like the switching mechanism according to the invention, has a carrier tab 4 on which a switching bridge 5, a jack support 6 and a jack 3 are rotatably mounted.
  • the entire mechanism is mounted so as to be pivotable about a mechanical axis of rotation 11 fixed to the housing.
  • the pawl support 6 can also be pivoted about this axis of rotation 11 relative to the carrier bracket 4.
  • the switching bridge 5 can be pivoted about the axis of rotation 12 relative to the carrier bracket 4, this axis of rotation 12 being spaced apart from the axis of rotation 11 of the mechanical system, ie the axes of rotation 12 and 11 are arranged offset to one another.
  • AT-B-404 648 can therefore not suggest that in order to achieve this advantageous effect in a two-pole switching device, the switching bridge axes of rotation are offset from the mechanical axis of rotation of this two-pole switching device.
  • the system stops as different, spaced apart components are formed from the leg supports.
  • the forces exerted on the switching bridges by the torsion springs can thus be greatly increased simply by changing the distance between the leg supports and the system stops to adjust.
  • the pawl axis of rotation spaced from the System stops and the leg supports is arranged.
  • the pawl can thus be independent of the other components of the switching mechanism and can therefore be attached to the carrier with little technical effort.
  • Fig. 1 the housing of a circuit breaker is shown, which two Switching paths, namely one for the phase conductor L of a single-phase AC circuit and one for the associated neutral conductor N.
  • Each of these switching paths comprises a connecting terminal 2 for the supply line and one Terminal 3 for the discharge (see Fig. 3).
  • first terminal 2 is one Busbar 4 connected to the first winding end of an impact armature 5th connected.
  • the second winding end of the anchor trigger 5 is with a connected to further busbar 6, which carries a fixed contact 7.
  • This switching bridge 9 is flexible Conductor rope 10 with the free end of a bimetallic strip 11 in connection. That immobile relative to the housing held second end of this bimetallic strip 11 is via a Busbar 12 connected to the second terminal 3.
  • This busbar 12 is connected to a spark horn 13, which with the busbar 6 one to the contacts 7.8 adjoining spark gap forms a spark quenching chamber in the end area 14, consisting of a plurality of mutually parallel quenching plates, is arranged.
  • Arcs are extinguished in this quenching chamber 14, which 7.8 in when the contacts open at a different time from the zero crossing between them and along the busbar 6 and the spark horn 13 run into the extinguishing chamber 14.
  • Anchor trigger 5 and bimetallic strip 11 are from the current to this switching path connected phase conductor and are used to monitor the height of this Current. Both components act when there is an impermissible amount of this current a switching mechanism 15 and can thus turn off the circuit breaker, that is Lift off the movable contact 8 from the fixed contact 7, which initiate Shutdown is carried out by the switching mechanism 15.
  • the striking anchor trigger 5 is used in a manner known per se to detect a short-term occurring (short circuit) current which exceeds the nominal value by a multiple and the bimetallic trigger 11 for detection of just a little above the nominal value current that is present for a long time (overload).
  • the switching path of the neutral conductor N which is not shown in the drawing figures, is so constructed like the phase conductor switching path just discussed, but it has none Anchor trigger and no bimetallic strip, so the current flowing through it not monitored.
  • the switching bridge 9 'of the neutral conductor switching path is common moved with the switching bridge 9 of the phase conductor switching path, so that the neutral conductor switching path is always switched with the phase conductor switching path.
  • the housing of the circuit breaker is still two full switching paths in it are housed, only one division unit (18mm) wide.
  • the present invention relates to the structural design of the Switching mechanism 15. This first includes the two switching bridges 9,9 'of the two Switching paths of the circuit breaker, each of which carries a movable contact 8,8 '.
  • the switching mechanism 15 has three main components, namely the carrier 17, the Pawl support 29 and the pawl 33 (see Fig. 4).
  • the carrier 17 is pivotable about a mechanical axis of rotation 16 in the housing stored, which is realized in the form that a pin is fixed in the housing and the carrier 17 has a bore corresponding to the outer diameter of this pin, with which it is stuck over this pen.
  • the carrier 17 has a normal to the mechanical axis of rotation 16 extending intermediate wall 18, on the two side surfaces of some components, namely, cylinders 19, 19 ', contact stops 26, 26' and leg supports 25, 25 'are formed are.
  • the cylinders 19, 19 ' serve for the rotatable mounting of the switching bridges 9, 9' on the carrier 17, thus form switching bridge axes of rotation 36.
  • the abutment stops 26, 26 ' preferably also have a cylindrical shape and are with Distance from the cylinders 19, 19 'and concentric to the mechanical axis of rotation 16 at the Partition 18 integrally formed.
  • the switching bridge axes of rotation 36 are thus in the direction the movable contacts 8, 8 'are arranged offset from the mechanical axis of rotation 16.
  • these torsion springs 21, 21 'with their windings 22, 22' are on the cylinders 19,19 'placed, their first legs 23,23' are in the area of the movable contacts 8.8 'on the switching bridges 9.9' and their second legs 24.24 'are on the Leg supports 25, 25 '(see Fig. 3).
  • the switching bridges 9,9 ' have exactly the same dimensions, so they are congruent executed.
  • the system stops 26, 26 ' are in alignment with one another and concentric with the Mechanism axis of rotation 16 arranged, but their strengths or diameters are so far different from each other than the diameter of the neutral conductor switching path assigned system stop 26 'smaller than the diameter of the phase conductor switching path assigned system stop 26 (see FIG. 6). It follows that the two movable contacts 8,8 'when looking at the switching mechanism 15 in the direction of Mechanism axis of rotation 16 - in the state lifted from the fixed contacts 7, 7 'to one another are angularly offset by the amount a (see Fig. 7).
  • the pawl support designated 29 has a bore 30 with which it on the System stop 26 is placed and thus rotatably mounted on the carrier 17.
  • this pawl support 29 has a Shoulder 31 on which a pawl 33 can attach.
  • This pawl 33 is a U-shaped component, preferably bent from a thin sheet, which has holes 38 in its legs for receiving a hollow rivet 39.
  • the upper end of the intermediate wall 18 of the carrier 17 is also a bore 40 introduced through which the hollow rivet 39 is passed.
  • the pawl 33 is thus at the upper end of the intermediate wall 18 rotatably mounted about a pawl axis of rotation 32.
  • the pawl 33 has a projection at its end opposite the bores 38 37 on who can sit on the shoulder 31. Is - as shown in Fig. 2 and 3 - the Pawl 33 locked in this way with the pawl support 29, the three main components of the Switch mechanism 15 (carrier 17, pawl support 29 and pawl 33) form-fitting with each other connected and the switching mechanism 15 can by means of the actuating lever 35, which has a Bracket 34 is coupled to the pawl 33, moved, i.e. from their ON position (Fig. 2) to their OFF position (Fig. 3) and vice versa.
  • Competent residual current detection component impact armature trigger 5 or bimetallic strip 11
  • Competent residual current detection component impact armature trigger 5 or bimetallic strip 11
  • the Impact anchor 50 of the impact anchor trigger 5 is struck directly on this section 41; the free, in the event of impermissible heating due to impermissibly high continuous current in the direction the second terminal 3 moving end of the bimetallic strip 11 takes one Drawbar 42 with which is connected to section 41 via a tubular rivet 43.
  • This pivoting is carried out by a helical compression spring 28, the first end of which is placed on a pin 27, the upper on the cylinders 19, 19 'opposite End of the intermediate wall 18 of the carrier 17 is formed.
  • the second end of this Helical compression spring 28 is supported on the housing.
  • the first end is one another torsion spring 45 set.
  • Your free leg 46 sits on section 41 of the Pawl support 29, whereby the pawl support 29 from this torsion spring 45 in Is biased clockwise.
  • This bias causes that after the latching of latch projection 37 and shoulder 31 has been released, the latch support 29 against the Pivoted clockwise and thus the shoulder 31 is moved towards the pawl 33.
  • the operating lever 35 has been brought into the OFF position (which is automatic by a spring built into it), so that the pawl projection 37 can again System come on shoulder 31.

Landscapes

  • Breakers (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Keying Circuit Devices (AREA)
  • Push-Button Switches (AREA)
  • Switches With Compound Operations (AREA)
  • Protection Of Static Devices (AREA)
  • Emergency Protection Circuit Devices (AREA)

Claims (4)

  1. Mécanisme de commutation (15) pour un disjoncteur, comportant deux trajets de commutation à commuter ensemble qui présentent chacun un contact (8, 8') mobile fixé sur un pont de commutation (9, 9'), dans lequel
    il est prévu un support (17) supporté de façon pivotante autour d'un axe de rotation de mécanisme (16) solidaire du boítier, qui présente une cloison (18) normale à l'axe de rotation de mécanisme (16), dont les deux faces latérales portent chacune un cylindre (19, 19'), une butée d'appui (26, 26') concentrique de l'axe de rotation du mécanisme (16) et un appui de bras (25, 25'), les cylindres (19, 19') recevant les ponts de commutation (9, 9') dans leurs alésages (20, 20') ainsi que des ressorts de torsion (21, 21') dans leurs filetages (22, 22'), de telle sorte que les axes longitudinaux des cylindres (19, 19') forment des axes de rotation des ponts de contact (36), les premiers bras (23, 23') des ressorts de torsion (21, 21') reposant sur les ponts de commutation (25, 25') et les deuxièmes bras (24, 24') sur les appuis de bras (25, 25'), ce qui a pour effet que les ponts de commutation (9, 9') sont constamment mis en charge dans le sens des appuis de bras (26, 26') présentant des épaisseurs différentes l'une de l'autre,
    un goujon (27) est formé à l'extrémité supérieure de la cloison (18) faisant face aux cylindres (19, 19'), sur lequel est posée la première extrémité du ressort hélicoïdal de compression (28) dont la deuxième extrémité s'appuie sur le boítier,
    il est prévu un appui de cliquet (29) qui est posé par son alésage (30) sur la butée d'appui (26) et présente au niveau de l'extrémité supérieure de la cloison (18) un épaulement (31) sur lequel une saillie (37) d'un cliquet (33) peut se mettre en prise, lequel cliquet (33) est supporté avec possibilité de rotation autour d'un axe de rotation de cliquet (32) à l'extrémité supérieure de la cloison (18), et
    il est prévu un étrier (34) qui couple le cliquet (33) avec un levier d'actionnement (35),
    caractérisé en ce que les axes de rotation des ponts de commutation (36) sont décalés par rapport à l'axe de rotation du mécanisme (16) en direction des contacts mobiles (8, 8').
  2. Mécanisme de commutation selon la revendication 1, caractérisé en ce que les butées d'appui (26, 26') sont conçues comme des éléments différents des appuis de bras (25, 25') et distants les uns des autres.
  3. Mécanisme de commutation selon la revendication 1 ou 2, caractérisé en ce que l'axe de rotation du cliquet (32) est disposé à distance des butées d'appui (26, 26') et des appuis de bras (25, 25').
  4. Mécanisme de commutation selon l'une quelconque des revendications 1 à 3, caractérisé en ce qu'une autre forme cylindrique (44) est formée sur le support (17) et en ce qu'il est prévu un autre ressort de torsion (45) dont la première extrémité est fixée sur cette forme (44) et dont le bras libre (46) s'appuie sur la partie (41) de l'appui de cliquet (29).
EP00890116A 2000-04-11 2000-04-11 Mécanisme de commutation pour un disjoncteur Expired - Lifetime EP1146534B1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
ES00890116T ES2170047T3 (es) 2000-04-11 2000-04-11 Mecanismo de conmutacion para un disyuntor.
DE50000092T DE50000092D1 (de) 2000-04-11 2000-04-11 Schaltmechanik für einen Schutzschalter
SI200030010T SI1146534T1 (en) 2000-04-11 2000-04-11 Switching mechanism for a circuit breaker
PT00890116T PT1146534E (pt) 2000-04-11 2000-04-11 Mecanismo de comutacao para disjuntores de proteccao
EP00890116A EP1146534B1 (fr) 2000-04-11 2000-04-11 Mécanisme de commutation pour un disjoncteur
AT00890116T ATE211581T1 (de) 2000-04-11 2000-04-11 Schaltmechanik für einen schutzschalter
DK00890116T DK1146534T3 (da) 2000-04-11 2000-04-11 Koblingsmekanik for en sikkerhedsafbryder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00890116A EP1146534B1 (fr) 2000-04-11 2000-04-11 Mécanisme de commutation pour un disjoncteur

Publications (2)

Publication Number Publication Date
EP1146534A1 EP1146534A1 (fr) 2001-10-17
EP1146534B1 true EP1146534B1 (fr) 2002-01-02

Family

ID=8175927

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00890116A Expired - Lifetime EP1146534B1 (fr) 2000-04-11 2000-04-11 Mécanisme de commutation pour un disjoncteur

Country Status (7)

Country Link
EP (1) EP1146534B1 (fr)
AT (1) ATE211581T1 (fr)
DE (1) DE50000092D1 (fr)
DK (1) DK1146534T3 (fr)
ES (1) ES2170047T3 (fr)
PT (1) PT1146534E (fr)
SI (1) SI1146534T1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111788651A (zh) * 2018-02-23 2020-10-16 伊顿智能动力有限公司 电气开关设备

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI116863B (fi) 2004-01-19 2006-03-15 Abb Oy Nollajohtimella varustettu kytkinlaite
NL1027343C2 (nl) * 2004-10-26 2006-04-27 Eaton Electric Nv Beveiligingsschakelaar.
FR2956922B1 (fr) * 2010-03-01 2012-08-24 Schneider Electric Ind Sas Dispositif de coupure
CN114914129A (zh) * 2021-02-09 2022-08-16 施耐德电器工业公司 一种直流断路器

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4882557A (en) * 1987-11-13 1989-11-21 Airpax Corporation Multipole circuit breaker system with differential pole operation
DE59006962D1 (de) * 1989-08-08 1994-10-06 Felten & Guilleaume Ag Oester Leitungsschutzschalter.
EP0570647B1 (fr) * 1992-05-13 1994-03-02 Hager Electro S.A. Mécanisme de serrure pour disjoncteur et disjoncteurs l'incorporant
DE69202052D1 (de) * 1992-05-13 1995-05-18 Hager Electro Montageverfahren für Phasen-Neutralleiter-Schutzschalter und Schutzschalter dieser Bauart.
AT404648B (de) * 1992-06-29 1999-01-25 Felten & Guilleaume Ag Oester Selbstschalter
FR2709205B1 (fr) * 1993-08-17 1995-10-20 Merlin Gerin Interrupteur différentiel tétrapolaire.
FR2723470A1 (fr) * 1994-08-04 1996-02-09 Legrand Sa Disjoncteur

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111788651A (zh) * 2018-02-23 2020-10-16 伊顿智能动力有限公司 电气开关设备
CN111788651B (zh) * 2018-02-23 2022-11-29 伊顿智能动力有限公司 电气开关设备

Also Published As

Publication number Publication date
PT1146534E (pt) 2002-07-31
ES2170047T3 (es) 2002-08-01
ATE211581T1 (de) 2002-01-15
DE50000092D1 (de) 2002-02-28
SI1146534T1 (en) 2002-06-30
DK1146534T3 (da) 2002-04-22
EP1146534A1 (fr) 2001-10-17

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