EP0915489B1 - Mécanisme de commande à bielles pour un interrupteur à trois positions - Google Patents
Mécanisme de commande à bielles pour un interrupteur à trois positions Download PDFInfo
- Publication number
- EP0915489B1 EP0915489B1 EP19980410128 EP98410128A EP0915489B1 EP 0915489 B1 EP0915489 B1 EP 0915489B1 EP 19980410128 EP19980410128 EP 19980410128 EP 98410128 A EP98410128 A EP 98410128A EP 0915489 B1 EP0915489 B1 EP 0915489B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- crank
- drive crank
- spring
- switch
- operating
- 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
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
- H01H3/3047—Power arrangements internal to the switch for operating the driving mechanism using spring motor adapted for operation of a three-position switch, e.g. on-off-earth
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
- H01H2003/3094—Power arrangements internal to the switch for operating the driving mechanism using spring motor allowing an opening - closing - opening [OCO] sequence
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
- H01H3/3005—Charging means
- H01H3/3026—Charging means in which the closing spring charges the opening spring or vice versa
Definitions
- the invention relates to an energy storage control mechanism for a electric switch or circuit breaker, having a rotary main shaft carrying or actuating the contacts, and capable of being brought selectively into three positions stable comprising a first central opening position, a second position of closing the switch, and a third earthing position, said shaft main being connected by transmission rods to a first device for DC1 command to close and open the switch, and to a second DC2 earthing control device.
- a known control mechanism of the kind mentioned comprises two devices for independent controls, one for closing and opening the switch, and the other for closing and opening of the earthing.
- Each of these devices of its kind Tumbler has a spring, and interlocking systems prohibit any wrong operation, in particular closing of the earthing when the switch is closed.
- Document FR-A-2660109 showing a mechanism according to the preamble of claim 1, makes use of a single spring imposing maneuvers abruptness of the main tree by means of toggle levers transmitting to the tree main an increasing torque from said central position to the positions of closing the switch and earthing to come to these last positions in neutral, stable locking of the main shaft.
- a locking device prevents any untimely rotation of the main shaft during the arming phase, and opposes any rebound during opening.
- the mechanism includes a additional safety constituted by an interlocking preventing the operation of the earthing when the switch is closed, and vice versa. This interlocking cooperates with the control shafts for example by preventing the installation of the operating lever.
- the object of the invention is to improve the performance of a control of a switch or circuit breaker with three working positions.
- the opposite end of the main spring is attached to a third drive crank to which the other connecting rod is articulated transmission of the second control device.
- the second drive crank cooperates in the armed position with a lock closure capable of maintaining the main spring and the transfer spring in the compressed state and prohibit any movement of the third crank for grounding.
- the first drive crank has a snap rim and a supporting surface cooperating respectively with the opening latch, and with a stop in the armed position.
- the energy storage mechanism comprises a shaft main 23 rotating integral with an operating crank 22, and coupled or constituted by the contact-carrying shaft of a switch or circuit breaker that can be brought selectively in one of three distinct stable positions.
- Main tree 23 can thus occupy either a first central position for opening the switch (FIGS. 1 and 2), either a second position for closing the switch (FIGS. 3 to 4), or a third earthing position diametrically opposite to the second position.
- the operating crank 22 carries an eccentric pin 21 on which are articulated two transmission rods 12, 14 respectively coupled to a first device for DC1 command to close and open the switch, and to a second DC2 control device for closing and opening the earthing.
- the first control device DC1 has an actuation shaft 24 on which are mounted a first drive crank 7 cooperating with a lock opening 2, and a second drive crank 6 coupled by a crankpin 10 to the connecting rod 12, and capable of cooperating with a closing lock 5.
- the second DC2 control device has a third crank drive 15 coupled by a crankpin 20 to the other connecting rod 14.
- a main spring 9 is inserted between the third drive crank 15, and a crank pin 13 secured to a first control crank 11 fixed on the shaft actuation 24.
- the pin 13 can move in a curvilinear light 33 formed in the first drive crank 7.
- the main spring 9 is associated a transfer spring 1, which is interposed between a fixed hooking member 19 and a crank pin 31 located on a second control crank 4 pivotally mounted on an axis 3.
- a mechanical link 25 is arranged between the first drive crank 7 and the second control crank 4 so as to make the two springs 1, 9 dependent on each other.
- the operation of the energy storage mechanism is as follows:
- crank pin 13 To perform a switch closing sequence, it is necessary to perform first arming the mechanism following a rotational movement of the first drive crank 7 around the actuation shaft 24.
- the action of the crank 7 on the crank pin 13 causes compression of the main spring 9, being given that the third drive crank 15 remains stationary.
- the movement of rotation of the crankpin 13 clockwise allows the crossing of the top dead center formed by the alignment of the shaft 24, of the crank pin 13 and from the attachment point 32 of the main spring 9 to the third crank 16.
- the crank pin is in abutment against the left end of the light 33 formed in the crank 7 so as to apply a torque to the second drive crank 6.
- the rotation of the first drive crank 7 causes simultaneously by through the mechanical link 25, the pivoting of the second crank control 4 anticlockwise, so as to compress the transfer spring 1.
- the opening lock 2 positively locks the first drive crank 7 in support against the stop 8, and maintains the two springs 9, 1 in the compressed state.
- the arming is finished and the energy retained in the transfer spring 1 will allow make an opening operation after having previously closed a the switch.
- the operating crank 22 and the transmission connecting rods 12, 14 remain stationary during the arming operation.
- the second drive crank 6 is rotate the operating handle 22 anti-clockwise around the shaft 23 via the transmission rod 12.
- the shaft 23 arrives in the closed position, and the movement of the connecting rod 14 and crank 15 assembly is without effect on the main spring 9 being in the relaxed state (FIG. 3).
- This earthing phase occurs by means of the actuation of the third crank 15, the operating sequence of which is described in detail in the document FR-A-2 660 109.
Landscapes
- Mechanisms For Operating Contacts (AREA)
- Switches With Compound Operations (AREA)
Description
- une première manivelle d'entraínement coopérant avec un verrou d'ouverture, et calée sur un arbre d'actionnement avec une deuxième manivelle d'entraínement articulée à l'une des bielles,
- une ouverture ménagée dans la première manivelle d'entraínement pour assurer le déplacement d'un maneton solidaire d'une première manivelle de commande pour la compression et la détente d'un ressort principal,
- et un ressort de transfert assujetti à un maneton d'une deuxième manivelle de commande reliée à la première manivelle d'entraínement par une liaison mécanique, l'ensemble étant agencé pour armer simultanément le ressort principal et le ressort de transfert, et pour transférer l'énergie du ressort de transfert vers le ressort principal lors de la libération de la première manivelle d'entraínement suite au déblocage du verrou d'ouverture, provoquant d'abord la compression et le franchissement du point mort du ressort principal, et ensuite la détente dudit ressort principal pour le déplacement de la deuxième manivelle d'entraínement vers la position d'ouverture de l'interrupteur.
- La figure 1 est une vue schématique en élévation du mécanisme de commande selon l'invention, ledit mécanisme étant représenté en position d'ouverture ;
- les figures 2 à 4 sont des vues identiques du mécanisme de la figure 1 respectivement en position armée prêt pour fermer, en position de fermeture, et en position fermée prêt à ouvrir.
Le fonctionnement du mécanisme à accumulation d'énergie est le suivant :
Claims (4)
- Mécanisme de commande à accumulation d'énergie pour un interrupteur ou disjoncteur électrique, ayant un arbre principal (23) rotatif portant ou actionnant les contacts, et susceptible d'être amené sélectivement en trois positions stables comprenant une première position centrale d'ouverture, une deuxième position de fermeture de l'interrupteur, et une troisième position de mise à la terre, ledit arbre principal (23) étant connecté par des bielles de transmission (12, 14) à un premier dispositif de commande (DC1) de fermeture et d'ouverture de l'interrupteur, et à un deuxième dispositif de commande (DC2) de mise à la terre,
caractérisé en ce que le premier dispositif de commande (DC1) comporte :une première manivelle d'entraínement (7) coopérant avec un verrou d'ouverture (2), et calée sur un arbre d'actionnement (24) avec une deuxième manivelle d'entraínement (6) articulée à l'une des bielles (12),une ouverture (33) ménagée dans la première manivelle d'entraínement (7) pour assurer le déplacement d'un maneton (13) solidaire d'une première manivelle de commande (11) pour la compression et la détente d'un ressort principal (9),et un ressort de transfert (1) assujetti à un maneton (31) d'une deuxième manivelle de commande (4) reliée à la première manivelle d'entraínement (7) par une liaison mécanique (25), l'ensemble étant agencé pour armer simultanément le ressort principal (9) et le ressort de transfert (1), et pour transférer l'énergie du ressort de transfert (1) vers le ressort principal (9) lors de la libération de la première manivelle d'entraínement (7) suite au déblocage du verrou d'ouverture (2), provoquant d'abord la compression et le franchissement du point mort du ressort principal (9), et ensuite la détente dudit ressort principal pour le déplacement de la deuxième manivelle d'entraínement (6) vers la position d'ouverture de l'interrupteur. - Mécanisme de commande selon la revendication 1, caractérisé en ce que l'extrémité opposée du ressort principal (9) est attachée à une troisième manivelle d'entraínement (16) à laquelle est articulée l'autre bielle de transmission (14) du deuxième dispositif de commande (DC2), par l'intermédiaire de la manivelle (15) et le maneton (17).
- Mécanisme de commande selon la revendication 2, caractérisé en ce que la deuxième manivelle d'entraínement (6) coopère en position armée avec un verrou de fermeture (5) susceptible d'assurer le maintien du ressort principal (9) et du ressort de transfert (1) dans l'état comprimé, et d'interdire tout déplacement de la troisième manivelle d'entraínement (15) pour la mise à la terre.
- Mécanisme de commande selon la revendication 1, caractérisé en ce que la première manivelle d'entraínement (7) comporte un rebord d'encliquetage (35) et une surface d'appui (36) coopérant respectivement avec le verrou d'ouverture (2), et avec une butée (8) en position armée.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9714185A FR2770680B1 (fr) | 1997-11-06 | 1997-11-06 | Mecanisme de commande a bielles pour un interrupteur a trois positions |
FR9714185 | 1997-11-06 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0915489A1 EP0915489A1 (fr) | 1999-05-12 |
EP0915489B1 true EP0915489B1 (fr) | 2002-04-03 |
Family
ID=9513290
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19980410128 Expired - Lifetime EP0915489B1 (fr) | 1997-11-06 | 1998-11-04 | Mécanisme de commande à bielles pour un interrupteur à trois positions |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0915489B1 (fr) |
DE (1) | DE69804566T2 (fr) |
ES (1) | ES2175640T3 (fr) |
FR (1) | FR2770680B1 (fr) |
NO (1) | NO317871B1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2877487B1 (fr) * | 2004-11-04 | 2007-04-06 | Areva T & D Sa | Dispositif de commande mecanique pour un commutateur a trois positions et un point mort |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2609839B1 (fr) * | 1987-01-21 | 1989-04-07 | Merlin Gerin | Mecanisme a accrochage de commande d'un disjoncteur a trois positions |
FR2660109B1 (fr) * | 1990-03-23 | 1992-06-05 | Merlin Gerin | Mecanisme de commande d'un interrupteur a trois positions. |
FR2696866B1 (fr) * | 1992-10-13 | 1994-12-02 | Merlin Gerin | Mécanisme d'actionnement d'un interrupteur à trois positions. |
-
1997
- 1997-11-06 FR FR9714185A patent/FR2770680B1/fr not_active Expired - Fee Related
-
1998
- 1998-11-04 EP EP19980410128 patent/EP0915489B1/fr not_active Expired - Lifetime
- 1998-11-04 DE DE1998604566 patent/DE69804566T2/de not_active Expired - Fee Related
- 1998-11-04 ES ES98410128T patent/ES2175640T3/es not_active Expired - Lifetime
- 1998-11-05 NO NO19985162A patent/NO317871B1/no not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
FR2770680B1 (fr) | 1999-12-03 |
NO317871B1 (no) | 2004-12-27 |
ES2175640T3 (es) | 2002-11-16 |
FR2770680A1 (fr) | 1999-05-07 |
NO985162L (no) | 1999-05-07 |
NO985162D0 (no) | 1998-11-05 |
EP0915489A1 (fr) | 1999-05-12 |
DE69804566D1 (de) | 2002-05-08 |
DE69804566T2 (de) | 2002-09-26 |
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