FR2663152A1 - Mechanism of a circuit breaker with grouped, extended coil springs, and method of mounting the springs - Google Patents

Mechanism of a circuit breaker with grouped, extended coil springs, and method of mounting the springs Download PDF

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Publication number
FR2663152A1
FR2663152A1 FR9007315A FR9007315A FR2663152A1 FR 2663152 A1 FR2663152 A1 FR 2663152A1 FR 9007315 A FR9007315 A FR 9007315A FR 9007315 A FR9007315 A FR 9007315A FR 2663152 A1 FR2663152 A1 FR 2663152A1
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France
Prior art keywords
spring
plate
external
opposite
turns
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FR9007315A
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French (fr)
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FR2663152B1 (en
Inventor
Lepretre Pascal
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Merlin Gerin SA
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Merlin Gerin SA
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Priority to FR9007315A priority Critical patent/FR2663152B1/en
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Publication of FR2663152B1 publication Critical patent/FR2663152B1/en
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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
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • 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
    • H01H5/04—Energy stored by deformation of elastic members
    • H01H5/06—Energy stored by deformation of elastic members by compression or extension of coil springs

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  • Breakers (AREA)

Abstract

The mechanism of a low-voltage circuit breaker with a moulded box includes a spring device consisting of two grouped, extended coil springs (20, 21), the ends of which are anchored to mechanism plates (22, 23). The ends of the inner spring (21) are shaped into a hook (26) for hooking on to a central orifice of the mechanism plates (22, 23). Each mechanism plate carries two lateral projections (27) in the shape of teeth, which, in assembled position, are inserted between two successive turns of the outer spring (20).

Description

MECANISME D'UN DISJONCTEUR A RESSORTS A BOUDIN GROUPES TENDUS ET
PROCEDE DE MONTAGE DES RESSORTS.MECHANISM OF A SPRING CIRCUIT BREAKER WITH TIGHT GROUPS AND
METHOD OF MOUNTING THE SPRINGS.

L'invention est relative à un mécanisme d'un disjoncteur basse tension ayant une manette de commande d'ouverture et de fermeture de contacts, une genouillère articulée, d'une part au contact mobile et, d'autre part à un crochet de déclenchement et un ressort à boudin tendu, ancre a l'axe de la genouillère et à la manette, pour engendrer un mouvement brusque d'ouverture et de fermeture des contacts.The invention relates to a mechanism of a low voltage circuit breaker having a control lever for opening and closing of contacts, an articulated toggle joint, on the one hand to the movable contact and, on the other hand to a trip hook. and a tensioned coil spring, anchored to the axis of the toggle joint and to the lever, to generate an abrupt movement of opening and closing of the contacts.

Le pouvoir de coupure du disjoncteur est en grande partie déterminé par la vitesse de déplacement du contact mobile, ellemême étant directement fonction de la force du ressort du mécanisme. Des disjoncteurs connus comportent deux ou trois ressorts disposés côte à côte, mais l'accroissement de la force se fait au détriment de l'encombrement.The breaking capacity of the circuit breaker is largely determined by the speed of movement of the movable contact, itself being directly a function of the force of the mechanism's spring. Known circuit breakers include two or three springs arranged side by side, but the increase in force is at the expense of space.

La présente invention a pour but de réaliser un ressort de force accrue, tout en conservant l'encombrement.The object of the present invention is to produce a spring of increased force, while retaining the bulk.

La présente invention est caractérisée en ce que ledit ressort est constitué de deux ressorts groupés concentriques, dont les extrémités sont accrochées à deux platines, que chaque platine présente un orifice central dans lequel est accrochée l'extrémité en forme de crochet du ressort interne, et deux saillies en forme de dents latérales susceptibles de se visser dans l'extrémité du ressort externe en s'insérant entre deux spires successives de ce ressort, et que l'une des platines est montée à rotation sur l'axe de la genouillère, et l'autre sur un pivot de la manette.The present invention is characterized in that said spring consists of two concentric grouped springs, the ends of which are hooked to two plates, that each plate has a central orifice in which the hook-shaped end of the internal spring is hung, and two projections in the form of lateral teeth capable of being screwed into the end of the external spring by being inserted between two successive turns of this spring, and that one of the plates is mounted for rotation on the axis of the toggle joint, and the other on a pivot of the joystick.

I1 est courant de disposer coaxialement plusieurs ressorts à boudin comprimés, ceux-ci étant intercalés entre deux coupelles d'appui. I1 est par contre difficile d'accrocher deux ressorts groupés tendus à une même platine sans risque de déséquilibre. It is common to have several compressed coil springs coaxially, these being interposed between two support cups. On the other hand, it is difficult to hang two grouped springs stretched on the same plate without risk of imbalance.

Selon la présente invention, le ressort interne comporte à son extrémité un crochet coopérant avec un orifice central de la platine. Le ressort externe est accroche a cette platine par deux dents s'insérant entre les spires du ressort, symétriquement par rapport à l'axe de ce dernier. La symétrie axiale est ainsi conservée, et la platine reste parfaitement alignée au cours des mouvements d'élongation ou de compression des ressorts. La saillie des dents est suffisante pour obtenir un ancrage de la platine, cette saillie correspondant par exemple a la section du ressort externe.According to the present invention, the internal spring comprises at its end a hook cooperating with a central orifice of the plate. The external spring is hooked to this plate by two teeth inserted between the turns of the spring, symmetrically relative to the axis of the latter. The axial symmetry is thus preserved, and the plate remains perfectly aligned during the movements of elongation or compression of the springs. The projection of the teeth is sufficient to obtain an anchoring of the plate, this projection corresponding for example to the section of the external spring.

L'invention porte également sur un procédé de montage, de tels ressorts groupés tendus, lequel procédé est caractérisé en ce qu'on accroche le ressort interne à l'une des platines, qu'on fixe cette platine au ressort externe en la vissant dans la dernière spire du ressort, qu'on fixe le ressort interne à la platine opposée, qu'on dispose l'une des dents en regard de l'extrémité du ressort externe en glissant la dent oppose e entre les deux premières spires, et qu'on visse la platine opposée pour insérer ladite une dent entre les deux premières spires.The invention also relates to a method of mounting such tensioned group springs, which method is characterized in that the internal spring is hooked to one of the plates, that this plate is fixed to the external spring by screwing it into the last turn of the spring, that the internal spring is fixed to the opposite plate, that one of the teeth is placed opposite the end of the external spring by sliding the opposite tooth between the first two turns, and that 'we screw the opposite plate to insert said a tooth between the first two turns.

L'ancrage de la deuxième platine nécessite un mouvement de rotation, par exemple de 900 degrés pour visser les dents entre les spires du ressort externe. Cette rotation d'un quart de tour est parfaitement tolérée par le ressort interne, et elle correspond avantageusement au sens de polarisation de ce ressort. Les platines d'extrémités des ressorts sont agencees en douilles, montées à rotation sur l'axe de la genouillère et sur un pivot porté par la manette. L'ensemble est particulièrement simple et permet d'augmenter notablement la force du ressort tout en conservant l'encombrement original.The anchoring of the second plate requires a rotational movement, for example of 900 degrees to screw the teeth between the turns of the external spring. This quarter-turn rotation is perfectly tolerated by the internal spring, and it advantageously corresponds to the direction of polarization of this spring. The end plates of the springs are arranged in sockets, mounted to rotate on the axis of the toggle joint and on a pivot carried by the lever. The assembly is particularly simple and makes it possible to notably increase the force of the spring while preserving the original bulk.

D'autres avantages et caractéristiques ressortiront plus clairement de la description qui va suivre, d'un mode de mise en oeuvre de l'invention, donné à titre d'exemple non limitatif et représenté au dessin annexé dans lequel: - la figure 1 est une coupe axiale d'un mécanisme de disjoncteur équipe d'un ressort selon l'invention; - la figure 2 est une vue à échelle agrandie du ressort selon la figure 1; - la figure 3 est une vue éclatée du ressort selon la figure 2.Other advantages and characteristics will emerge more clearly from the description which follows, of an embodiment of the invention, given by way of nonlimiting example and represented in the appended drawing in which: - Figure 1 is an axial section of a circuit breaker mechanism fitted with a spring according to the invention; - Figure 2 is an enlarged view of the spring according to Figure 1; - Figure 3 is an exploded view of the spring according to Figure 2.

Sur la figure 1, on reconnait un disjoncteur à boltier moule 10, ayant un contact mobile 11, porté par un barreau 12 d'un mécanisme d'actionnement 13. Ce mécanisme comprend une genouillère à bielle inférieure 14, articulée au barreau 12, et à bielle supérieure articulée à un crochet de déclenchement 15.In FIG. 1, a molded bolt circuit breaker 10 can be recognized, having a movable contact 11, carried by a bar 12 of an actuating mechanism 13. This mechanism comprises a toggle link with lower link 14, articulated to the bar 12, and with upper connecting rod articulated to a trigger hook 15.

Une manette 16 de commande manuelle d'ouverture et de fermeture du disjoncteur est montée à pivotement et porte un pivot 17 de fixation d'un dispositif à ressort 18, dont l'autre extrémité est articulée sur l'axe 19 de la genouillère. Un tel mécanisme est bien connu, et il suffit de rappeler qu'un déplacement de la manette 16 provoque une modification de la ligne d'action du dispositif à ressort 1 8 pour engendrer sélectivement le brisage ou l'extension de la genouillère, et ainsi l'ouverture ou la fermeture du contact 11 du disjoncteur.A lever 16 for manual opening and closing control of the circuit breaker is pivotally mounted and carries a pivot 17 for fixing a spring device 18, the other end of which is articulated on the axis 19 of the toggle joint. Such a mechanism is well known, and it suffices to recall that a displacement of the lever 16 causes a modification of the line of action of the spring device 1 8 to selectively cause the breaking or the extension of the toggle joint, and thus the opening or closing of contact 11 of the circuit breaker.

Selon la présente invention, le dispositif à ressort 18 est constitué d'un ressort à boudin tendu externe 20, d'un ressort à boudin tendu interne 21, et de deux platines 22,23. Chaque platine 22,23 comporte un trou 24 d'articulation de la platine respectivement sur le pivot 17 et l'axe 19, ainsi qu'un orifice central 25 d'accrochage de l'extrémité conformée en crochet 26 du ressort interne 21. La base de la platine 22,23 pressente deux saillies opposées 27 en forme de dents, susceptibles de s'insérer entre deux spires successives du ressort externe 20.According to the present invention, the spring device 18 consists of an external tension coil spring 20, an internal tension coil spring 21, and two plates 22,23. Each plate 22, 23 has a hole 24 for articulation of the plate respectively on the pivot 17 and the axis 19, as well as a central orifice 25 for hooking the hook shaped end 26 of the internal spring 21. The base of the plate 22, 23 has two opposite projections 27 in the form of teeth, capable of being inserted between two successive turns of the external spring 20.

Le montage du dispositif à ressort 18 est réalisé de la manière suivante:
En un premier temps, on fixe l'une des platines, par exemple la platine 22 au ressort externe 20 en introduisant les dents 27, par exemple par vissage entre les spires d'extrémités 28 du ressort externe 20. Le crochet 26 du ressort interne 21 est alors introduit dans l'orifice 25 pour ancrer ce ressort à la platine 22. L'extrémité opposée en forme de crochet 26 est accrochée d'une manière similaire à la platine 23, dont l'une des dents 27 est amenée en regard de l'extrémité 29 du ressort externe 20.On glisse alors la dent opposée 27 derrière la dernière spire du ressort, pour l'introduire entre deux spires successives avant de faire pivoter la platine 23, d'un quart de tour dans le sens d'enroulement du ressort 20, pour visser la dent 27 sous l'extrémité 29, et ancrer la platine 23 sur le ressort externe 20. La rotation d'un quart de tour est transmise au ressort interne 21, dont le sens de polarisation correspond avantageusement au sens de rotation de la platine 23.The mounting of the spring device 18 is carried out as follows:
Firstly, one of the plates is fixed, for example the plate 22 to the external spring 20 by introducing the teeth 27, for example by screwing between the end turns 28 of the external spring 20. The hook 26 of the internal spring 21 is then introduced into the orifice 25 to anchor this spring to the plate 22. The opposite hook-shaped end 26 is hooked in a similar manner to the plate 23, one of the teeth 27 of which is brought opposite from the end 29 of the external spring 20. Then slide the opposite tooth 27 behind the last turn of the spring, to introduce it between two successive turns before rotating the plate 23, by a quarter of a turn in the direction d winding of the spring 20, to screw the tooth 27 under the end 29, and anchor the plate 23 on the external spring 20. The rotation of a quarter turn is transmitted to the internal spring 21, the direction of polarization of which advantageously corresponds in the direction of rotation of the plate 23.

Il est facile de voir que le dispositif à ressort 18 présente une symétrie axiale et que les platines 22,23 ne sont nullement déséquilibrées lors des mouvements d'élongation ou de compression des ressorts 20,21.It is easy to see that the spring device 18 has axial symmetry and that the plates 22, 23 are in no way unbalanced during the movements of elongation or compression of the springs 20, 21.

L'ensemble est particulièrement simple et permet d'accroltre la force d'un ressort d'un mécanisme de disjoncteur, notamment des disjoncteurs standards, par un dispositif selon l'invention, à ressorts à boudin groupés.The assembly is particularly simple and makes it possible to increase the force of a spring of a circuit breaker mechanism, in particular standard circuit breakers, by a device according to the invention, with grouped coil springs.

L'invention est bien entendu nullement limitée au mode de mise en oeuvre plus particulièrement décrit. The invention is of course in no way limited to the embodiment more particularly described.

Claims (6)

REVENDICATIONS 1. Mécanisme d'un disjoncteur basse tension ayant une manette (16) de commande d'ouverture et de fermeture de contacts (11), une genouillère articulée, d'une part au contact mobile (11) et, d'autre part à un crochet (15) de déclenchement et un ressort (18) à boudin tendu, ancré à'axe (19) de la genouillère et à la manette (16) pour engendrer un mouvement brusque d'ouverture et de fermeture des contacts, caractérisé en ce que ledit ressort est constitue de deux ressorts (20,21) groupés concentriques, dont les extrémités sont accrochées à deux platines (22,23), que chaque platine présente un orifice central (25) dans lequel est accrochée l'extrémité en forme de crochet (26) du ressort interne (21) et deux saillies (-27) en forme de dents latérales susceptibles de se visser dans l'extrémité du ressort externe (20) en s'insérant entre deux spires successives de ce ressort et que l'une (22) des platines est montée à rotation sur l'axe (19) de la genouillère et l'autre sur un pivot (17) de la manette (16).1. Mechanism of a low voltage circuit breaker having a handle (16) for controlling the opening and closing of contacts (11), an articulated toggle joint, on the one hand to the movable contact (11) and, on the other hand to a hook (15) for triggering and a spring (18) with a tensioned coil, anchored to the axis (19) of the toggle joint and to the lever (16) to generate a sudden movement of opening and closing of the contacts, characterized in what said spring consists of two springs (20,21) grouped concentrically, the ends of which are hooked to two plates (22,23), that each plate has a central orifice (25) in which the end is shaped hook (26) of the internal spring (21) and two projections (-27) in the form of lateral teeth capable of being screwed into the end of the external spring (20) by being inserted between two successive turns of this spring and that one (22) of the plates is rotatably mounted on the axis (19) of the toggle joint and the another on a pivot (17) of the lever (16). 2. Mécanisme selon la revendication 1, caractérisé en ce que chaque platine (22,23) est constituée d'une plaque dont la base a une largeur sensiblement égale au diamètre interne du ressort extérieur (20) et porte lesdites dents (27) faisant saillie de part et d'autre de ladite base pour pénêtrer entre les spires du ressort externe (20).2. Mechanism according to claim 1, characterized in that each plate (22,23) consists of a plate whose base has a width substantially equal to the internal diameter of the outer spring (20) and carries said teeth (27) making projection on either side of said base to penetrate between the turns of the external spring (20). 3. Mécanisme selon la revendication 2, caractérisé en ce que la hauteur de saillie de chaque dent (27) correspond sensiblement à la section du ressort externe (20).3. Mechanism according to claim 2, characterized in that the projection height of each tooth (27) corresponds substantially to the section of the external spring (20). 4. Procédé de montage du ressort selon la revendication 1 ,2 ou 3, caractérisé en ce qu'on accroche le ressort interne (21) à l'une (22) des platines, qu'on fixe cette platine (22) au ressort externe (20) en la vissant dans la dernière spire du ressort, qu'on fixe le ressort interne (21) à la platine opposée (23), qu'on dispose l'une des dents (27) en regard de l'extrémité (29) du ressort externe (20), en glissant la dent opposée entre les deux premières spires, et qu'on visse la platine opposée (23) pour insérer ladite dent (27) entre les deux premières spires.4. A method of mounting the spring according to claim 1, 2 or 3, characterized in that the internal spring (21) is hooked to one (22) of the plates, that this plate (22) is fixed to the spring external (20) by screwing it into the last turn of the spring, that the internal spring (21) is fixed to the opposite plate (23), that one of the teeth (27) is placed opposite the end (29) of the external spring (20), by sliding the opposite tooth between the first two turns, and screwing the opposite plate (23) to insert said tooth (27) between the first two turns. 5. Procédé selon la revendication 4, caractérisé en ce qu'on tourne ladite platine (23) opposée dans le sens d'enroulement du ressort externe (20) d'un quart de tour pour la visser dans le ressort externe.5. Method according to claim 4, characterized in that said plate (23) opposite is rotated in the direction of winding of the external spring (20) by a quarter turn to screw it into the external spring. 6. Procédé selon la revendication 4 ou 5, caractérisé en ce que le sens de rotation de ladite platine (23) opposée correspond au sens de polarisation du ressort interne (21). 6. Method according to claim 4 or 5, characterized in that the direction of rotation of said opposite plate (23) corresponds to the direction of polarization of the internal spring (21).
FR9007315A 1990-06-11 1990-06-11 MECHANISM OF A SPRING CIRCUIT BREAKER WITH TENSIONED BULB AND METHOD OF MOUNTING THE SPRINGS. Expired - Lifetime FR2663152B1 (en)

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Application Number Priority Date Filing Date Title
FR9007315A FR2663152B1 (en) 1990-06-11 1990-06-11 MECHANISM OF A SPRING CIRCUIT BREAKER WITH TENSIONED BULB AND METHOD OF MOUNTING THE SPRINGS.

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Application Number Priority Date Filing Date Title
FR9007315A FR2663152B1 (en) 1990-06-11 1990-06-11 MECHANISM OF A SPRING CIRCUIT BREAKER WITH TENSIONED BULB AND METHOD OF MOUNTING THE SPRINGS.

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FR2663152A1 true FR2663152A1 (en) 1991-12-13
FR2663152B1 FR2663152B1 (en) 1996-04-26

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FR9007315A Expired - Lifetime FR2663152B1 (en) 1990-06-11 1990-06-11 MECHANISM OF A SPRING CIRCUIT BREAKER WITH TENSIONED BULB AND METHOD OF MOUNTING THE SPRINGS.

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1914772A1 (en) * 2006-10-17 2008-04-23 LS Industrial Systems Co., Ltd Air circuit breaker, breaking spring of air circuit breaker and connection method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH221428A (en) * 1941-11-08 1942-05-31 Landis & Gyr Ag Furnishing with a kinking element.
US2995043A (en) * 1960-06-20 1961-08-08 G & W Electric Speciality Co Two position snap action operator
US3002068A (en) * 1960-08-04 1961-09-26 Fed Pacific Electric Co Circuit breakers
DE2651376A1 (en) * 1975-11-12 1977-05-26 Electronic Components Ltd PUSH BUTTONS FOR AN ELECTRIC SWITCH
EP0206883A1 (en) * 1985-06-12 1986-12-30 Merlin Gerin Moulded case circuit breaker

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH221428A (en) * 1941-11-08 1942-05-31 Landis & Gyr Ag Furnishing with a kinking element.
US2995043A (en) * 1960-06-20 1961-08-08 G & W Electric Speciality Co Two position snap action operator
US3002068A (en) * 1960-08-04 1961-09-26 Fed Pacific Electric Co Circuit breakers
DE2651376A1 (en) * 1975-11-12 1977-05-26 Electronic Components Ltd PUSH BUTTONS FOR AN ELECTRIC SWITCH
EP0206883A1 (en) * 1985-06-12 1986-12-30 Merlin Gerin Moulded case circuit breaker

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1914772A1 (en) * 2006-10-17 2008-04-23 LS Industrial Systems Co., Ltd Air circuit breaker, breaking spring of air circuit breaker and connection method thereof

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