EP0756754B1 - Systeme d'entrainement pour un dispositif de blocage empechant l'arbre de commande de rebondir - Google Patents

Systeme d'entrainement pour un dispositif de blocage empechant l'arbre de commande de rebondir Download PDF

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Publication number
EP0756754B1
EP0756754B1 EP95915770A EP95915770A EP0756754B1 EP 0756754 B1 EP0756754 B1 EP 0756754B1 EP 95915770 A EP95915770 A EP 95915770A EP 95915770 A EP95915770 A EP 95915770A EP 0756754 B1 EP0756754 B1 EP 0756754B1
Authority
EP
European Patent Office
Prior art keywords
gripper
switch shaft
detent arm
driving arrangement
arrangement 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 - Lifetime
Application number
EP95915770A
Other languages
German (de)
English (en)
Other versions
EP0756754A1 (fr
Inventor
Ludvik Godesa
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0756754A1 publication Critical patent/EP0756754A1/fr
Application granted granted Critical
Publication of EP0756754B1 publication Critical patent/EP0756754B1/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
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/504—Manual reset mechanisms which may be also used for manual release provided with anti-rebound means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
    • H01H2001/508—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position with mechanical means to prevent return/reverse movement of movable contact once opening or closing cycle has started

Definitions

  • the invention relates to a drive device Circuit breaker with a common for several poles Switching shaft, which on the one hand is operated by a toggle lever Spring accumulator in the switch-on direction and on the other hand through Switch-off forces on the pole side can be acted upon in the switch-off direction is, as protection against rebounding the shift shaft from their end position when switching off a mechanical locking device is provided.
  • a drive device of this type is through the US-A-4 468 533.
  • the locking device includes thereby a hook-like lever, the hook-like area comes close to a stationary bolt when switched off and spread over it.
  • the one on the shift shaft seated lever mounted hook-like lever is with a Return spring acts on the hook-like lever pulls back and the normal mobility of the selector shaft restores.
  • the bouncing of the selector shaft when the switch-off position is reached is due to a number of different factors dependent. Not only are important in this context the mechanical properties of the moving parts, d. H. your Mass, its elastic caused by the forces Deformation and its speed, but also that of each to be interrupted by the switch contacts of the circuit breaker Electricity, from which an electrodynamic effect the moving parts runs out. Therefore, it prepares considerable Difficulties in designing the aforementioned locking device that they bounce across the entire range of performance Circuit breaker, d. H. from normal operating currents up to the largest short-circuit currents. For example a locking device of the type mentioned in a particular Switching current must be effective, but neither at a lower one even at a higher current. The invention is therefore the Task based on a locking device of the aforementioned Art to train so that regardless of the strength of the Switching process is effective.
  • At least one tentacle is attached to the control shaft and that the gripper is pivotally arranged about a fixed bearing is, the tentacle is a work surface for loading of the gripper in terms of capturing the tentacle.
  • This arrangement is independent of that on the selector shaft seated levers can be used, through which the driving forces initiated in the shift shaft and forwarded by this will. Therefore, the locking device formed by the gripper to be attached at a suitable place and at suitable dimensioning can also be used repeatedly.
  • the Gripper a cavity open on one side with one of the tentacles adapted arcuate outer wall be formed and there may be an overlap between the catch arm and the gripper be dimensioned much larger than this to block the Shift shaft against turning back is required.
  • the working area of the locking device becomes considerable because the gripper extends the tentacle differently can spread without causing a stop in a End position comes, which affect the effectiveness of the device could.
  • the gripper cavity may have an arcuate end wall have, while the tentacle has a straight end edge. This ensures that the gripper is reflected by bouncing even if the overlap pass through completely between the catch arm and the gripper and the gripper with the end face of its cavity hits the end of the tentacle.
  • the locking device can on the selector shaft two identical arrangements of catch arm and gripper arranged and the return springs of the two grippers can be different be strong.
  • the tentacle is close to one that is as stable as possible Bearing is supported.
  • This can be particularly the case with the arrangement can be achieved with two tentacles and grippers that the two grippers are arranged symmetrically to two support plates are which take up the knee levers between them and on which there are shaft bearings for the selector shaft.
  • the grippers can be connected to a protruding over the support plates and at the same time one Stop for the switch-off position of the selector shaft Carrying bolts must be stored.
  • Figure 1 shows a switching shaft of a low-voltage circuit breaker with adjacent parts of a drive device with two locking devices against bouncing the Selector shaft.
  • Figure 2 is in a larger than in Figure 1 Scale one of the locking devices in a side view shown.
  • the control shaft 1 shown in the figures is on two support plates 2 and 3 mounted parallel and rigid are connected together.
  • the support plates 2 and 3 take up a lever arrangement between them, in particular transmit a driving force to the shift shaft Toggle lever 4 belong.
  • One between the support plates 2 and 3 arranged spring not visible in the figures is by a hand lever arranged on the side of the support plate 3 5 exciting.
  • the for latching the spring in tensioned state and for the transmission of the spring force the switch shaft and from there to the switch contacts Parts are common in low voltage circuit breakers known and are therefore not in the present context described in more detail.
  • each of the locking devices 6 comprises a catch arm seated on the control shaft 1 7 with a shape apparent from FIG. 2. Heard further to each of the locking devices 6, a gripper 10, the Figure also emerges in more detail from Figure 2. How one recognizes, the tentacle 7 has an arcuate contour a substantially straight end edge 11. On the overhang End part 12 of the support plates 2 and 3 connecting Support pin 13, the gripper 10 is pivotally mounted.
  • a wire spring one of which serves as the return spring 14 Leg 15 on the control shaft 1 and its other leg 16 abuts the gripper 10, the windings also enclose the protruding end part 12 of the supporting bolt 13.
  • the gripper 10 has a cavity 17 open on one side with an arcuate outer wall 20 that the contour of the Catch arm 7 is adapted. However, one is different arcuate end wall 21 of the cavity 17, which is an areal Touching the end of the tentacle 7 with the gripper 10 excludes.
  • the catch arm 7 also has a working surface 22, which with a cavity 17 with respect to the pivot axis of the gripper 10 opposite extension 23 cooperates.
  • FIG 2 shows the locking device in the idle state, in which the control shaft 1 between its end positions is freely rotatable.
  • the Shift shaft 1 rotates in the direction of that in FIG shown arrow 24 from.
  • the work surface 22 meets of the catch arm 7 against the extension 23 of the gripper 10 and causes the gripper 10 against the force of the return spring 14 to pivot against the direction of rotation of the selector shaft 1.
  • the end edge 11 and the cavity move 17 towards each other.
  • the gripper overlaps work surface 22 on extension 23 10 with its cavity 17 the tentacle 7 to different degrees. As soon as a certain overlap between these parts is reached the shift shaft 1 cannot rebound.
  • the gripper 10 returns the starting position shown back and gives the tentacle 7 free again.
  • This process is considerable Range of forces that the selector shaft at the is exposed to different switching processes.
  • the gripper 10 always remains in engagement with it for a certain time the tentacle 7, because a radial collision of the tentacle 7 and the gripper 10 usually does not take place and thus the gripper 10 is not thrown back prematurely by bouncing can be.
  • the support plates are on both sides 2 and 3 a catch arm 7 and a gripper 10 each. Differently is only the strength of the return spring 14, whereby one of the devices at lower and the another device at higher speeds of the switch-off process is effective.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

Dans le système d'entraînement d'un sectionneur de puissance, il est prévu un dispositif de blocage destiné à empêcher l'arbre de commande de rebondir hors de sa position de disjonction. Ce dispositif de blocage (6) comprend un bras d'arrêt (7) situé sur l'arbre de commande (1), ainsi qu'une griffe (10) pouvant pivoter autour d'un support fixe. La griffe (10) comporte un évidement en voûte qui se positionne dans une large mesure sur le bras d'arrêt (7). Une surface de travail située sur le bras collecteur (7) permet d'actionner la griffe (10) de manière que son évidement (17) se positionne sur le bras d'arrêt (7).

Claims (6)

  1. Dispositif d'entraínement d'un disjoncteur comportant un arbre (1) de commande commun à plusieurs pôles, qui est peut-être soumis, d'une part, dans le sens de fermeture, par l'intermédiaire de leviers (4) coudés, à l'action d'un ressort accumulateur et, d'autre part, dans le sens d'ouverture, à des forces d'ouverture du côté des pôles, une griffe (10) soumise à l'action d'un ressort (14) de rappel étant prévue pour empêcher l'arbre (1) de commande de rebondir de sa position d'extrémité lors de l'ouverture, caractérisé en ce qu'il est fixé sur l'arbre (1) de commande au moins un bras (7) d'arrêt et en ce que la griffe (10) est montée pivotante par rapport à un palier (12) monté fixe, le bras (7) d'arrêt comportant une surface (22) active servant à soumettre la griffe (10) à une charge en vue de saisir le bras (7) d'arrêt.
  2. Dispositif d'entraínement suivant la revendication 1, caractérisé en ce que la griffe (10) est réalisée en une cavité (17) ouverte d'un seul côté, comportant une paroi (20) extérieure en forme d'arc adaptée au bras (7) d'arrêt, et en ce qu'il est prévu un recouvrement du bras (7) d'arrêt et de la griffe (10) sensiblement plus grand que ce qui est nécessaire pour empêcher l'arbre (1) de commande de rebondir.
  3. Dispositif d'entraínement suivant la revendication 2, caractérisé en ce que la cavité (17) de la griffe (10) comporte une paroi (21) d'extrémité en forme d'arc et en ce que le bras (7) d'arrêt a un bord (11) d'extrémité droit.
  4. Dispositif d'entraínement suivant l'une des revendications précédentes, caractérisé en ce qu'il est monté sur l'arbre (1) de commande deux dispositifs identiques, constitués d'un bras (7) d'arrêt et d'une griffe (10), et en ce qu'il est prévu des dimensions fortement différentes des ressorts (14) de rappel des deux griffes (10).
  5. Dispositif d'entraínement suivant la revendication 4, caractérisé en ce que les deux griffes (10) sont montées symétriquement par rapport à deux plateaux (2,3) de support qui reçoivent les leviers (4) coudés et sur lesquels se trouvent les paliers d'arbre destinés à l'arbre (1) de commande.
  6. Dispositif d'entraínement suivant la revendication 5, caractérisé en ce que les griffes (10) sont montées sur un axe (13) de support reliant les plateaux (2,3) de support, dépassant des plateaux (2,3) de support et formant en même temps une butée pour la position d'ouverture de l'arbre (1) de commande.
EP95915770A 1994-04-20 1995-04-10 Systeme d'entrainement pour un dispositif de blocage empechant l'arbre de commande de rebondir Expired - Lifetime EP0756754B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4416091 1994-04-20
DE4416091A DE4416091C1 (de) 1994-04-20 1994-04-20 Antriebsvorrichtung mit einer Sperrvorrichtung gegen ein Zurückprellen der Schaltwelle
PCT/DE1995/000494 WO1995029499A1 (fr) 1994-04-20 1995-04-10 Systeme d'entrainement pour un dispositif de blocage empechant l'arbre de commande de rebondir

Publications (2)

Publication Number Publication Date
EP0756754A1 EP0756754A1 (fr) 1997-02-05
EP0756754B1 true EP0756754B1 (fr) 1998-03-04

Family

ID=6517518

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95915770A Expired - Lifetime EP0756754B1 (fr) 1994-04-20 1995-04-10 Systeme d'entrainement pour un dispositif de blocage empechant l'arbre de commande de rebondir

Country Status (5)

Country Link
US (1) US5743385A (fr)
EP (1) EP0756754B1 (fr)
JP (1) JP3792253B2 (fr)
DE (2) DE4416091C1 (fr)
WO (1) WO1995029499A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1008731C2 (nl) * 1998-03-27 1999-09-28 Holec Holland Nv Schakelaar met moment-inschakeling.
DE10060195C1 (de) * 2000-11-24 2002-07-25 Siemens Ag Antriebsstrang für einen bewegbaren Kontakt eines elektrischen Schalters
CN100401438C (zh) * 2003-02-07 2008-07-09 拉森和托布洛有限公司 安全锁紧装置
DE20314795U1 (de) * 2003-09-19 2005-01-27 Siemens Ag Elektrischer Schalter
CZ300139B6 (cs) * 2006-03-06 2009-02-18 Oez, S. R. O. Spínací ústrojí elektrického prístroje, zvlášte výkonového jistice
CN101656178B (zh) * 2009-09-21 2014-02-26 浙江中凯科技股份有限公司 一种带短路保护功能的触头系统
US9208962B2 (en) * 2013-11-26 2015-12-08 General Electric Company Circuit breaker including an anti-rebound system, anti-rebound system for a circuit breaker and method
US9536694B2 (en) 2014-12-04 2017-01-03 Eaton Corporation Electrical switching apparatus and pole shaft catch assembly therefor
CN106128874B (zh) * 2015-05-04 2018-10-16 现代电力与能源系统株式会社 断路器
CN109659204A (zh) * 2017-10-12 2019-04-19 江苏高博锐电气有限公司 一种断路器锁套式防弹跳机构
CN109659205A (zh) * 2017-10-12 2019-04-19 江苏高博锐电气有限公司 一种断裂器卡板式防弹跳机构

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1096168A (fr) * 1954-03-23 1955-06-09 Cem Comp Electro Mec Dispositif antirebondissement
JPS58131622A (ja) * 1982-01-29 1983-08-05 三菱電機株式会社 気中しや断器
US4468553A (en) * 1982-04-13 1984-08-28 Conceptual Engineering Associates, Inc. Automatic chain welding apparatus
US5226528A (en) * 1990-11-06 1993-07-13 Schaffer John S Switch operating mechanism
FR2688626B1 (fr) * 1992-03-13 1994-05-06 Merlin Gerin Disjoncteur a boitier moule a pont de contacts freine en fin de course de repulsion.
US5486667A (en) * 1994-02-28 1996-01-23 General Electric Company Rating module unit for high ampere-rated circuit breaker
FR2723252B1 (fr) * 1994-08-01 1996-09-13 Schneider Electric Sa Mecanisme de disjoncteur equipe d'un dispositif a ccumulateur d'energie a butee d'amortissement

Also Published As

Publication number Publication date
WO1995029499A1 (fr) 1995-11-02
DE4416091C1 (de) 1995-06-22
DE59501564D1 (de) 1998-04-09
JP3792253B2 (ja) 2006-07-05
EP0756754A1 (fr) 1997-02-05
US5743385A (en) 1998-04-28
JPH09512133A (ja) 1997-12-02

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