EP1914605A1 - Lever escapement - Google Patents

Lever escapement Download PDF

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Publication number
EP1914605A1
EP1914605A1 EP06021911A EP06021911A EP1914605A1 EP 1914605 A1 EP1914605 A1 EP 1914605A1 EP 06021911 A EP06021911 A EP 06021911A EP 06021911 A EP06021911 A EP 06021911A EP 1914605 A1 EP1914605 A1 EP 1914605A1
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EP
European Patent Office
Prior art keywords
pallet
exhaust according
teeth
anchor
pallets
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Application number
EP06021911A
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German (de)
French (fr)
Inventor
Anthony Krüttli
Frédéric Maier
Jean-Pierre Musy
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Patek Philippe SA Geneve
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Patek Philippe SA Geneve
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Publication date
Application filed by Patek Philippe SA Geneve filed Critical Patek Philippe SA Geneve
Priority to EP06021911A priority Critical patent/EP1914605A1/en
Publication of EP1914605A1 publication Critical patent/EP1914605A1/en
Withdrawn legal-status Critical Current

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    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B15/00—Escapements
    • G04B15/06—Free escapements
    • G04B15/08—Lever escapements

Definitions

  • the present invention relates to the field of watchmaking and relates more particularly to an escapement anchor.
  • the anchor In conventional anchor escapements, the anchor has entry and exit pallets which cooperate with a toothed wheel called escape wheel, driven by the barrel.
  • the entry and exit pallets generally each have a pulse face through which the escape wheel transmits energy to the anchor.
  • the design of the pallets and their impulse face namely their position, their shape and their dimensions, plays an essential role in the quality of operation of the exhaust, in particular in its efficiency.
  • a disadvantage of these exhausts is that the entry and exit pallets are interdependent in their design. For example, if one of the pallets is designed first, the position, shape and dimensions of the other pallet will be imposed by those of the first pallet. It follows that the exhaust performance can be optimal at the entrance or exit, but not both at once.
  • the present invention aims to provide an anchor escapement that allows greater freedom in the design of the pallets of the anchor to facilitate, in particular, obtaining a better performance.
  • an escapement comprising an anchor cooperating with a toothed mobile, the anchor comprising first and second pallets, each of said pallets comprising a pulse face, characterized in that the first and second pallets are located in two different planes and cooperate with respective first and second teeth of the toothed mobile.
  • an escapement according to the invention comprises an anchor 1 and a toothed mobile 2.
  • the anchor 1 consists of a lower part 3 and an upper part 4 extending in two different parallel planes. These two anchor parts 3, 4 are integral and mounted on a common axis 5.
  • the lower part 3 has at its two ends, respectively, a stinger 6 and a first pallet 7.
  • the upper part 4 has at its two ends, respectively , a fork 8 and a second pallet 9.
  • the fork 8 cooperates with an anchor 10 carried by a large plate 11 mounted on the axis of a rocker, to give an impulse to the balance at each alternation of the latter
  • the stinger 6 cooperates with a small plate 12 secured to the large plate 11 to prevent the reversal of the anchor.
  • the vanes 7, 9 are respectively located at the end of two arms 3a, 4a starting from the axis 5 and away from this axis in opposite directions. In a view from above, the vanes 7, 9 are therefore spaced laterally from one another, and are more precisely located on either side of a plane containing the imaginary axes of rotation of the balance, of the anchor and the escape wheel.
  • the pallets 7, 9 are respectively the first and second pallets seen by a given point of the periphery of the mobile 2 when the latter rotates in its normal direction of rotation (clockwise) from a position where said given point is away from the anchor 1.
  • Each pallet 7, 9 comprises an impulse face 14, a rest face 15, a cuff 16, a rest spout 17 and an impulse spout 18.
  • the pallet 7 could be carried by the upper anchor part 4 which carries the fork 8 and the pallet 9 could be carried by the lower anchor part 3 which carries the stinger 6.
  • the anchor 1 could be monobloc, provided that the pallets 7, 9 are in two different planes.
  • the toothed mobile 2 consists of two superimposed wheels 20, 21 located respectively in the same planes as the vanes 7, 9. These wheels 20, 21 are integral with each other and mounted on a common axis 22. Each wheel 20, 21 has on its periphery or slice a respective toothing 23, 24. The teeth 23, 24 are angularly offset relative to each other, by an angular offset of the wheels 20, 21, and cooperate respectively with the pallets 7, 9. Each tooth 23, 24 of the wheels 20, 21 comprises a pulse face 25, a rest face 26, a rest pin 27 and a heel 28.
  • the toothed wheel 2 could consist of a single wheel bearing two teeth superimposed.
  • the operation of the exhaust comprises several successive phases, namely, for each pallet 7, 9, a rest phase where the rest spoiler 17 of the pallet cooperates with the rest face 26 of a tooth 23, 24, a phase of release of the mobile 2 and a pulse phase.
  • the escapement according to the invention is preferably shared impulse, that is to say that the impulse phase comprises a first part where the mouthpiece 27 of the tooth 23, 24 slides on the impulse face 14 of the pallet 7, 9 and a second part where the pulse nozzle 18 of the pallet 7, 9 slides on the impulse face 25 of a tooth 23, 24.
  • the exhaust according to the invention functions as a Swiss lever escapement.
  • the exhaust according to the invention could be totally impulse on the anchor, that is to say that the teeth 23, 24 could be pointed and therefore not have a pulse face.
  • the escapement according to the invention would function as an English anchor escapement.
  • the position, the shape and the dimensions of each of the pallets 7, 9 can be chosen independently of the other pallet, in particular to optimize the efficiency exhaust at the two pallets at a time.
  • the teeth 23, 24 are also independent of each other as to their position, shape and dimensions.
  • the safety devices (fall, recoil, etc.) of the exhaust are obtained simply by indexing (angular offset) of the teeth 23, 24, that is to say the wheels 20, 21.
  • the wheels 20, 21 may have a small number of teeth, ten in the illustrated example, for the same diameter as a conventional escape wheel, and therefore a large angular space between two consecutive teeth, which allows the pallets 7, 9 to have a large width, in other words a long impulse face 14. The efficiency of the exhaust is thus improved, without increasing the radial space requirement .
  • the above-mentioned conditions relating to the angular lengths Ics, Ls, ds and ds increase the angle of lift of the anchor 1 which is advantageously greater than 15 °, preferably greater than 16.5 °.
  • the plate pin 10 is further from the axis of the balance than in conventional exhausts.
  • the path traveled by the pin 10 will be greater for the same angle of displacement of the pendulum. This allows the balance to maintain a conventional lifting angle, of the order of 48 to 54 °.
  • the escapement according to the invention works in the same way as if it had a single wheel having a number of teeth equal to the sum of the numbers of teeth of the wheels 20, 21, namely 20 teeth in the illustrated example.
  • the fact that each of the wheels 20, 21 has few teeth therefore does not force the escape pinion, designated by the reference 30, pinion which is secured to the wheels 20, 21 and cooperates with the seconds wheel, to have a small number of teeth.
  • This pinion 30 may instead have a usual number of teeth, typically greater than six, which allows it to be manufactured under standard conditions.
  • the escapement according to the invention is simple to produce.
  • the wheels 20, 21 and their teeth 23, 24 can be of shape and conventional manufacturing.
  • the wheels 20, 21 may have the same diameter, in particular the same total outer diameter defined by the apex of the teeth 23, 24, and even be identical as in the example illustrated.
  • teeth 23, 24 are identical because this allows the available torque to the first pallet 7 is the same as that available to the second pallet 9, which facilitates the achievement of optimum performance at level of both palettes at a time.
  • the anchor 1 as well as the exhaust as a whole may further retain a conventional overall shape and dimensions in top view.
  • the total height of the exhaust can also be the same as that of a conventional exhaust including a dart and a small plate.
  • the anchor 1 and the mobile 2 may be made of a light material such as silicon, silicon carbide, quartz or glass, which will give them a low inertia.

Abstract

The escapement has an anchor (1) cooperating with a toothed mobile (2) and including two pallets (7, 9), where each pallet includes a pulse face. The pallets are provided in two different planes and cooperate with two respective identical teeth (23, 24) of the toothed mobile. The pallets are laterally remote from each other. The teeth provided on the periphery of the toothed mobile are integrated to each other and are angularly shifted with respect to each other.

Description

La présente invention concerne le domaine de l'horlogerie et porte plus particulièrement sur un échappement à ancre.The present invention relates to the field of watchmaking and relates more particularly to an escapement anchor.

Dans les échappements à ancre conventionnels, l'ancre comporte des palettes d'entrée et de sortie qui coopèrent avec une roue dentée dite roue d'échappement, entraînée par le barillet. Les palettes d'entrée et de sortie présentent généralement chacune une face d'impulsion par laquelle la roue d'échappement transmet de l'énergie à l'ancre. La conception des palettes et de leur face d'impulsion, à savoir leur position, leur forme et leurs dimensions, joue un rôle essentiel dans la qualité de fonctionnement de l'échappement, en particulier dans son rendement. Un inconvénient de ces échappements est que les palettes d'entrée et de sortie sont interdépendantes dans leur conception. Par exemple, si l'une des palettes est conçue en premier, la position, la forme et les dimensions de l'autre palette seront imposées par celles de la première palette. Il en découle que le rendement de l'échappement peut être optimal à l'entrée ou à la sortie, mais pas aux deux à la fois.In conventional anchor escapements, the anchor has entry and exit pallets which cooperate with a toothed wheel called escape wheel, driven by the barrel. The entry and exit pallets generally each have a pulse face through which the escape wheel transmits energy to the anchor. The design of the pallets and their impulse face, namely their position, their shape and their dimensions, plays an essential role in the quality of operation of the exhaust, in particular in its efficiency. A disadvantage of these exhausts is that the entry and exit pallets are interdependent in their design. For example, if one of the pallets is designed first, the position, shape and dimensions of the other pallet will be imposed by those of the first pallet. It follows that the exhaust performance can be optimal at the entrance or exit, but not both at once.

La présente invention vise à proposer un échappement à ancre qui permette une plus grande liberté dans la conception des palettes de l'ancre pour faciliter, notamment, l'obtention d'un meilleur rendement.The present invention aims to provide an anchor escapement that allows greater freedom in the design of the pallets of the anchor to facilitate, in particular, obtaining a better performance.

A cette fin, il est prévu un échappement comportant une ancre coopérant avec un mobile denté, l'ancre comportant des première et seconde palettes, chacune desdites palettes comportant une face d'impulsion, caractérisé en ce que les première et seconde palettes sont situées dans deux plans différents et coopèrent avec des première et seconde dentures respectives du mobile denté.To this end, there is provided an escapement comprising an anchor cooperating with a toothed mobile, the anchor comprising first and second pallets, each of said pallets comprising a pulse face, characterized in that the first and second pallets are located in two different planes and cooperate with respective first and second teeth of the toothed mobile.

Des modes de réalisation particuliers de l'invention sont définis dans les revendications dépendantes annexées 2 à 18.Particular embodiments of the invention are defined in the appended dependent claims 2-18.

D'autres caractéristiques et avantages de la présente invention apparaîtront à la lecture de la description détaillée suivante faite en référence aux dessins annexés dans lesquels :

  • les figures 1 et 2 sont des vues en perspective de dessus d'un échappement à ancre selon l'invention, montrant l'échappement dans une position de fin de dégagement au niveau d'une première palette, respectivement d'une seconde palette ;
  • la figure 3 est une vue en perspective de côté de l'échappement selon l'invention ; et
  • la figure 4 est une vue en coupe de l'échappement selon l'invention, prise suivant un plan contenant les axes imaginaires de rotation du balancier, de l'ancre et de la roue d'échappement.
Other features and advantages of the present invention will appear on reading the following detailed description given with reference to the accompanying drawings in which:
  • Figures 1 and 2 are perspective views from above of an anchor escapement according to the invention, showing the exhaust in an end of release position at a first pallet or a second pallet;
  • Figure 3 is a side perspective view of the exhaust according to the invention; and
  • Figure 4 is a sectional view of the exhaust according to the invention, taken along a plane containing the imaginary axes of rotation of the balance, the anchor and the escape wheel.

En référence aux figures 1 à 4, un échappement selon l'invention comprend une ancre 1 et un mobile denté 2.With reference to FIGS. 1 to 4, an escapement according to the invention comprises an anchor 1 and a toothed mobile 2.

L'ancre 1 est constituée d'une partie inférieure 3 et d'une partie supérieure 4 s'étendant dans deux plans parallèles différents. Ces deux parties d ancre 3, 4 sont solidaires et montées sur un axe commun 5. La partie inférieure 3 comporte à ses deux extrémités, respectivement, un dard 6 et une première palette 7. La partie supérieure 4 comporte à ses deux extrémités, respectivement, une fourchette 8 et une seconde palette 9. De manière connue, la fourchette 8 coopère avec une cheville 10 portée par un grand plateau 11 monté sur l'axe d'un balancier, pour donner une impulsion au balancier à chaque alternance de ce dernier, et le dard 6 coopère avec un petit plateau 12 solidaire du grand plateau 11 pour empêcher le renversement de l'ancre.The anchor 1 consists of a lower part 3 and an upper part 4 extending in two different parallel planes. These two anchor parts 3, 4 are integral and mounted on a common axis 5. The lower part 3 has at its two ends, respectively, a stinger 6 and a first pallet 7. The upper part 4 has at its two ends, respectively , a fork 8 and a second pallet 9. In known manner, the fork 8 cooperates with an anchor 10 carried by a large plate 11 mounted on the axis of a rocker, to give an impulse to the balance at each alternation of the latter , and the stinger 6 cooperates with a small plate 12 secured to the large plate 11 to prevent the reversal of the anchor.

Les palettes 7, 9 sont situées respectivement à l'extrémité de deux bras 3a, 4a partant de l'axe 5 et s'éloignant de cet axe dans des sens opposés. En vue de dessus, les palettes 7, 9 sont donc distantes latéralement l'une de l'autre, et sont plus précisément situées de part et d'autre d'un plan contenant les axes imaginaires de rotation du balancier, de l'ancre et de la roue d'échappement. Les palettes 7, 9 sont respectivement la première et la seconde palette que voit un point donné de la périphérie du mobile 2 lorsque ce dernier tourne dans son sens de rotation normal (sens horaire) depuis une position où ledit point donné est éloigné de l'ancre 1. Chaque palette 7, 9 comprend une face d'impulsion 14, une face de repos 15, un revers 16, un bec de repos 17 et un bec d'impulsion 18.The vanes 7, 9 are respectively located at the end of two arms 3a, 4a starting from the axis 5 and away from this axis in opposite directions. In a view from above, the vanes 7, 9 are therefore spaced laterally from one another, and are more precisely located on either side of a plane containing the imaginary axes of rotation of the balance, of the anchor and the escape wheel. The pallets 7, 9 are respectively the first and second pallets seen by a given point of the periphery of the mobile 2 when the latter rotates in its normal direction of rotation (clockwise) from a position where said given point is away from the anchor 1. Each pallet 7, 9 comprises an impulse face 14, a rest face 15, a cuff 16, a rest spout 17 and an impulse spout 18.

Dans une variante, la palette 7 pourrait être portée par la partie d'ancre supérieure 4 qui porte la fourchette 8 et la palette 9 pourrait être portée par la partie d'ancre inférieure 3 qui porte le dard 6. Par ailleurs, l'ancre 1 pourrait être monobloc, pour autant que les palettes 7, 9 soient dans deux plans différents.In a variant, the pallet 7 could be carried by the upper anchor part 4 which carries the fork 8 and the pallet 9 could be carried by the lower anchor part 3 which carries the stinger 6. Moreover, the anchor 1 could be monobloc, provided that the pallets 7, 9 are in two different planes.

Le mobile denté 2 est constitué de deux roues superposées 20, 21 situées respectivement dans les mêmes plans que les palettes 7, 9. Ces roues 20, 21 sont solidaires l'une de l'autre et montées sur un axe commun 22. Chaque roue 20, 21 comporte sur sa périphérie ou tranche une denture respective 23, 24. Les dentures 23, 24 sont décalées angulairement l'une par rapport à l'autre, par un décalage angulaire des roues 20, 21, et coopèrent respectivement avec les palettes 7, 9. Chaque dent 23, 24 des roues 20, 21 comprend une face d'impulsion 25, une face de repos 26, un bec de repos 27 et un talon 28. Dans une variante, le mobile denté 2 pourrait être constitué d'une seule roue portant deux dentures superposées.The toothed mobile 2 consists of two superimposed wheels 20, 21 located respectively in the same planes as the vanes 7, 9. These wheels 20, 21 are integral with each other and mounted on a common axis 22. Each wheel 20, 21 has on its periphery or slice a respective toothing 23, 24. The teeth 23, 24 are angularly offset relative to each other, by an angular offset of the wheels 20, 21, and cooperate respectively with the pallets 7, 9. Each tooth 23, 24 of the wheels 20, 21 comprises a pulse face 25, a rest face 26, a rest pin 27 and a heel 28. In a variant, the toothed wheel 2 could consist of a single wheel bearing two teeth superimposed.

Le fonctionnement de l'échappement comprend plusieurs phases successives, à savoir, pour chaque palette 7, 9, une phase de repos où le bec de repos 17 de la palette coopère avec la face de repos 26 d'une dent 23, 24, une phase de dégagement du mobile 2 et une phase d'impulsion. L'échappement selon l'invention est de préférence à impulsion partagée, c'est-à-dire que la phase d'impulsion comprend une première partie où le bec de repos 27 de la dent 23, 24 glisse sur la face d'impulsion 14 de la palette 7, 9 et une seconde partie où le bec d'impulsion 18 de la palette 7, 9 glisse sur la face d'impulsion 25 d'une dent 23, 24. Dans ce cas, l'échappement selon l'invention fonctionne comme un échappement à ancre suisse. Dans une variante, toutefois, l'échappement selon l'invention pourrait être à impulsion totale sur l'ancre, c'est-à-dire que les dents 23, 24 pourraient être pointues et donc ne pas avoir de face d'impulsion. Dans ce cas, l'échappement selon l'invention fonctionnerait comme un échappement à ancre anglais.The operation of the exhaust comprises several successive phases, namely, for each pallet 7, 9, a rest phase where the rest spoiler 17 of the pallet cooperates with the rest face 26 of a tooth 23, 24, a phase of release of the mobile 2 and a pulse phase. The escapement according to the invention is preferably shared impulse, that is to say that the impulse phase comprises a first part where the mouthpiece 27 of the tooth 23, 24 slides on the impulse face 14 of the pallet 7, 9 and a second part where the pulse nozzle 18 of the pallet 7, 9 slides on the impulse face 25 of a tooth 23, 24. In this case, the exhaust according to the invention functions as a Swiss lever escapement. In a variant, however, the exhaust according to the invention could be totally impulse on the anchor, that is to say that the teeth 23, 24 could be pointed and therefore not have a pulse face. In this case, the escapement according to the invention would function as an English anchor escapement.

Grâce au positionnement des palettes 7, 9 et des dentures respectives 23, 24 dans deux plans superposés, la position, la forme et les dimensions de chacune des palettes 7, 9 peuvent être choisies indépendamment de l'autre palette, notamment pour optimiser le rendement de l'échappement au niveau des deux palettes à la fois. Les dentures 23, 24 sont elles aussi indépendantes l'une de l'autre quant à leurs position, forme et dimensions. Les sécurités (chute, recul, etc.) de l'échappement sont obtenues simplement par un indexage (décalage angulaire) des dentures 23, 24, c'est-à-dire des roues 20, 21. Comme chacune des roues 20, 21 ne travaille qu'avec une palette 7, 9, les roues 20, 21 peuvent avoir un petit nombre de dents, dix dans l'exemple illustré, pour un même diamètre qu'une roue d'échappement conventionnelle, et donc un grand espace angulaire entre deux dents consécutives, ce qui permet aux palettes 7, 9 d'avoir une grande largeur, en d'autres termes une longue face d'impulsion 14. Le rendement de l'échappement en est ainsi amélioré, sans augmenter l'encombrement radial.Thanks to the positioning of the pallets 7, 9 and the respective teeth 23, 24 in two superposed planes, the position, the shape and the dimensions of each of the pallets 7, 9 can be chosen independently of the other pallet, in particular to optimize the efficiency exhaust at the two pallets at a time. The teeth 23, 24 are also independent of each other as to their position, shape and dimensions. The safety devices (fall, recoil, etc.) of the exhaust are obtained simply by indexing (angular offset) of the teeth 23, 24, that is to say the wheels 20, 21. As each of the wheels 20, 21 only works with a pallet 7, 9, the wheels 20, 21 may have a small number of teeth, ten in the illustrated example, for the same diameter as a conventional escape wheel, and therefore a large angular space between two consecutive teeth, which allows the pallets 7, 9 to have a large width, in other words a long impulse face 14. The efficiency of the exhaust is thus improved, without increasing the radial space requirement .

De préférence, même dans le cas où l'échappement est à impulsion partagée, la longueur angulaire Le de la face d'impulsion 14 de la première palette 7 est supérieure à 8°, de préférence supérieure à 11°, de préférence encore supérieure à 14°, et la longueur angulaire Ls de la face d'impulsion 14 de la seconde palette 9 est supérieure à 7°, de préférence supérieure à 10°. Les longueurs angulaires Le et Ls sont mesurées depuis l'axe imaginaire de rotation du mobile 2 et, pour chacune des palettes 7, 9, dans une position de fin de dégagement où le bec de repos 17 de la palette est en contact avec le bec de repos 27 d'une dent (figures 1 et 2). Les inventeurs ont constaté que le rendement de l'échappement peut encore être amélioré en ajoutant aux conditions mentionnées plus haut relatives aux longueurs angulaires Le et Ls les conditions suivantes :

  • de > 2°
  • ds > 2°
  • Le / de > 2,5
  • Ls / ds > 2,5
ou de est la longueur angulaire de la face d'impulsion 25 des dents 23 de la roue 20 et ds est la longueur angulaire de la face d'impulsion 25 des dents 24 de la roue 21, les longueurs angulaires de et ds étant mesurées depuis l'axe imaginaire de rotation du mobile 2.Preferably, even in the case where the escapement is shared pulse, the angular length of the impulse face 14 of the first pallet 7 is greater than 8 °, preferably greater than 11 °, more preferably greater than 14 °, and the angular length Ls of the impulse face 14 of the second pallet 9 is greater than 7 °, preferably greater than 10 °. The angular lengths Le and Ls are measured from the imaginary axis of rotation of the mobile 2 and, for each of the vanes 7, 9, in an end-of-disengagement position where the vanishing spout 17 of the pallet is in contact with the spout. resting 27 of a tooth (Figures 1 and 2). The inventors have found that the efficiency of the exhaust can be further improved by adding to the conditions mentioned above relative to the angular lengths Le and Ls the following conditions:
  • from> 2 °
  • ds> 2 °
  • 2,5
  • Ls / ds> 2.5
where is the angular length of the impulse face 25 of the teeth 23 of the wheel 20 and ds is the angular length of the impulse face 25 of the teeth 24 of the wheel 21, the angular lengths of and ds being measured from the imaginary axis of rotation of the mobile 2.

Les conditions susmentionnées relatives aux longueurs angulaires Le, Ls, de et ds augmentent l'angle de levée de l'ancre 1 qui est avantageusement supérieur à 15°, de préférence supérieur à 16,5°. Pour éviter que cela n'entraîne une augmentation de l'angle de levée du balancier, qui nuirait à l'isochronisme, la cheville de plateau 10 est plus éloignée de l'axe du balancier que dans les échappements conventionnels. Ainsi, le chemin parcouru par la cheville 10 sera plus grand pour un même angle de déplacement du balancier. Ceci permet au balancier de conserver un angle de levée conventionnel, de l'ordre de 48 à 54°.The above-mentioned conditions relating to the angular lengths Ics, Ls, ds and ds increase the angle of lift of the anchor 1 which is advantageously greater than 15 °, preferably greater than 16.5 °. To prevent this from causing an increase in the lifting angle of the balance, which would be detrimental to isochronism, the plate pin 10 is further from the axis of the balance than in conventional exhausts. Thus, the path traveled by the pin 10 will be greater for the same angle of displacement of the pendulum. This allows the balance to maintain a conventional lifting angle, of the order of 48 to 54 °.

L'échappement selon l'invention travaille de la même manière que s'il comportait une seule roue ayant un nombre de dents égal à la somme des nombres de dents des roues 20, 21, à savoir 20 dents dans l'exemple illustré. Le fait que chacune des roues 20, 21 comporte peu de dents n'oblige donc pas le pignon d'échappement, désigné par le repère 30, pignon qui est solidaire des roues 20, 21 et coopère avec la roue de secondes, à avoir un petit nombre de dents. Ce pignon 30 peut au contraire avoir un nombre de dents usuel, typiquement supérieur à six, ce qui lui permet d'être fabriqué dans des conditions standard.The escapement according to the invention works in the same way as if it had a single wheel having a number of teeth equal to the sum of the numbers of teeth of the wheels 20, 21, namely 20 teeth in the illustrated example. The fact that each of the wheels 20, 21 has few teeth therefore does not force the escape pinion, designated by the reference 30, pinion which is secured to the wheels 20, 21 and cooperates with the seconds wheel, to have a small number of teeth. This pinion 30 may instead have a usual number of teeth, typically greater than six, which allows it to be manufactured under standard conditions.

On observera de plus que l'échappement selon l'invention est simple à réaliser. Les roues 20, 21 et leurs dentures 23, 24 peuvent être de forme et de fabrication conventionnelles. Les roues 20, 21 peuvent avoir le même diamètre, en particulier le même diamètre extérieur total défini par le sommet des dents 23, 24, et même être identiques comme dans l'exemple illustré.It will further be observed that the escapement according to the invention is simple to produce. The wheels 20, 21 and their teeth 23, 24 can be of shape and conventional manufacturing. The wheels 20, 21 may have the same diameter, in particular the same total outer diameter defined by the apex of the teeth 23, 24, and even be identical as in the example illustrated.

Il est d'ailleurs avantageux que les dentures 23, 24 soient identiques car cela permet que le couple disponible à la première palette 7 soit le même que celui disponible à la seconde palette 9, ce qui facilite l'obtention d'un rendement optimal au niveau des deux palettes à la fois.It is also advantageous that the teeth 23, 24 are identical because this allows the available torque to the first pallet 7 is the same as that available to the second pallet 9, which facilitates the achievement of optimum performance at level of both palettes at a time.

L'ancre 1 de même que l'échappement dans son ensemble peuvent en outre conserver une forme et des dimensions globales conventionnelles en vue de dessus. La hauteur totale de l'échappement peut elle aussi être la même que celle d'un échappement conventionnel comprenant un dard et un petit plateau.The anchor 1 as well as the exhaust as a whole may further retain a conventional overall shape and dimensions in top view. The total height of the exhaust can also be the same as that of a conventional exhaust including a dart and a small plate.

Enfin, l'ancre 1 et le mobile 2 peuvent être réalisés dans un matériau léger tel que le silicium, le carbure de silicium, le quartz ou le verre, qui leur conférera une faible inertie.Finally, the anchor 1 and the mobile 2 may be made of a light material such as silicon, silicon carbide, quartz or glass, which will give them a low inertia.

Claims (18)

Echappement comportant une ancre (1) coopérant avec un mobile denté (2), l'ancre (1) comportant des première et seconde palettes (7, 9), chacune desdites palettes comportant une face d'impulsion (14), caractérisé en ce que les première et seconde palettes (7, 9) sont situées dans deux plans différents et coopèrent avec des première et seconde dentures respectives (23, 24) du mobile denté (2).Exhaust comprising an anchor (1) cooperating with a toothed gear (2), the anchor (1) having first and second paddles (7, 9), each of said paddles having a pulse face (14), characterized in that that the first and second pallets (7, 9) are located in two different planes and cooperate with respective first and second teeth (23, 24) of the toothed gear (2). Echappement selon la revendication 1, caractérisé en ce que les première et seconde palettes (7, 9) comportent également chacune une face de repos (15).Exhaust according to claim 1, characterized in that the first and second pallets (7, 9) also each comprise a rest face (15). Echappement selon la revendication 1 ou 2, caractérisé en ce que les première et seconde palettes (7, 9) sont distantes latéralement l'une de l'autre.Exhaust according to claim 1 or 2, characterized in that the first and second pallets (7, 9) are laterally spaced from one another. Echappement selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les première et seconde dentures (23, 24) sont situées sur la périphérie du mobile denté (2).Exhaust according to any one of claims 1 to 3, characterized in that the first and second sets of teeth (23, 24) are located on the periphery of the toothed gear (2). Echappement selon l'une quelconque des revendications 1 à 4, caractérisé en ce que les première et seconde dentures (23, 24) sont solidaires l'une de l'autre et décalées angulairement l'une par rapport à l'autre.Exhaust according to any one of claims 1 to 4, characterized in that the first and second teeth (23, 24) are integral with each other and offset angularly relative to each other. Echappement selon la revendication 5, caractérisé en ce que les première et seconde dentures (23, 24) sont identiques.Exhaust according to claim 5, characterized in that the first and second sets of teeth (23, 24) are identical. Echappement selon l'une quelconque des revendications 1 à 6, caractérisé en ce que le mobile denté (2) comprend des première et seconde roues (20, 21) superposées et solidaires, les première et seconde roues comprenant respectivement les première et seconde dentures (23, 24).Exhaust according to any one of claims 1 to 6, characterized in that the toothed wheel (2) comprises first and second wheels (20, 21) superimposed and secured, the first and second wheels respectively comprising the first and second teeth ( 23, 24). Echappement selon l'une quelconque des revendications 1 à 7, caractérisé en ce que l'ancre (1) comprend des première et seconde parties (3, 4) s'étendant respectivement dans lesdits deux plans et comportant respectivement les première et seconde palettes (7, 9), ces première et seconde parties (3, 4) étant solidaires l'une de l'autre et montées sur un axe commun (5).Exhaust according to any one of claims 1 to 7, characterized in that the anchor (1) comprises first and second parts (3, 4) respectively extending in said two planes and respectively comprising the first and second pallets ( 7, 9), these first and second parts (3, 4) being integral with each other and mounted on a common axis (5). Echappement selon la revendication 8, caractérisé en ce que l'une (3) desdites parties comporte en outre un dard (6) et l'autre (4) desdites parties comporte en outre une fourchette (8).Exhaust according to claim 8, characterized in that one (3) of said parts further comprises a stinger (6) and the other (4) of said parts further comprises a fork (8). Echappement selon l'une quelconque des revendications 1 à 9, caractérisé en ce qu'il est à impulsion partagée.Exhaust according to any one of claims 1 to 9, characterized in that it is shared pulse. Echappement selon l'une quelconque des revendications 1 à 10, caractérisé en ce que la première palette (7) est la première desdites palettes (7, 9) que voit un point donné de la périphérie du mobile (2) lorsque ce dernier tourne dans son sens de rotation normal depuis une position où ledit point donné est éloigné de l'ancre (1), et en ce que la longueur angulaire (Le) de la face d'impulsion (14) de la première palette (7) est supérieure à 8°, ladite longueur angulaire (Le) étant mesurée depuis l'axe imaginaire de rotation du mobile (2) et dans une position de fin de dégagement où un bec de repos (17) de la première palette (7) est en contact avec un bec de repos (27) d'une dent (23) de la première denture.Exhaust according to any one of claims 1 to 10, characterized in that the first pallet (7) is the first of said pallets (7, 9) that sees a given point of the periphery of the mobile (2) when it rotates in its normal direction of rotation from a position where said given point is remote from the anchor (1), and in that the angular length (Le) of the impulse face (14) of the first pallet (7) is greater than at 8 °, said angular length (Le) being measured from the imaginary axis of rotation of the mobile (2) and in an end-of-clearance position where a quill (17) of the first pallet (7) is in contact with a spout (27) of a tooth (23) of the first toothing. Echappement selon la revendication 11, caractérisé en ce que la longueur angulaire (Le) de la face d'impulsion (14) de la première palette (7) est supérieure à 11°.Exhaust according to claim 11, characterized in that the angular length (Le) of the impulse face (14) of the first pallet (7) is greater than 11 °. Echappement selon la revendication 12, caractérisé en ce que la longueur angulaire (Le) de la face d'impulsion (14) de la première palette (7) est supérieure à 14°.Exhaust according to claim 12, characterized in that the angular length (Le) of the impulse face (14) of the first pallet (7) is greater than 14 °. Echappement selon l'une quelconque des revendications 1 à 13, caractérisé en ce que la seconde palette (9) est la seconde desdites palettes (7, 9) que voit un point donné de la périphérie du mobile (2) lorsque ce dernier tourne dans son sens de rotation normal depuis une position où ledit point donné est éloigné de l'ancre (1), et en ce que la longueur angulaire (Ls) de la face d'impulsion (14) de la seconde palette (9) est supérieure à 7°, ladite longueur angulaire (Ls) étant mesurée depuis l'axe imaginaire de rotation du mobile (2) et dans une position de fin de dégagement où un bec de repos (17) de la seconde palette (9) est en contact avec un bec de repos (27) d'une dent (24) de la seconde denture.Exhaust according to any one of claims 1 to 13, characterized in that the second pallet (9) is the second of said pallets (7, 9) that sees a given point of the periphery of the mobile (2) when it rotates in its normal direction of rotation from a position where said given point is remote from the anchor (1), and in that the angular length (Ls) of the impulse face (14) of the second pallet (9) is greater than at 7 °, said angular length (Ls) being measured from the imaginary axis of rotation of the mobile (2) and in an end-of-release position where a quill (17) of the second pallet (9) is in contact with a spout (27) of a tooth (24) of the second toothing. Echappement selon la revendication 14, caractérisé en ce que la longueur angulaire (Ls) de la face d'impulsion (14) de la seconde palette (9) est supérieure à 10°.Exhaust according to claim 14, characterized in that the angular length (Ls) of the impulse face (14) of the second pallet (9) is greater than 10 °. Echappement selon l'une quelconque des revendications 1 à 15, caractérisé en ce que la longueur angulaire (de, ds) de la face d'impulsion (25) des dents (23, 24) des première et seconde dentures, mesurée depuis l'axe imaginaire de rotation du mobile (2), est supérieure à 2°, en ce que le rapport entre la longueur angulaire (Le) de la face d'impulsion (14) de la première palette (7) et la longueur angulaire (de) de la face d'impulsion (25) des dents (23) de la première denture est supérieur à 2,5, et en ce que le rapport entre la longueur angulaire (Ls) de la face d'impulsion (14) de la seconde palette (9) et la longueur angulaire (ds) de la face d'impulsion (25) des dents (24) de la seconde denture est supérieur à 2,5, la longueur angulaire (Le, Ls) de la face d'impulsion (14) de chacune des palettes (7, 9) étant mesurée depuis l'axe imaginaire de rotation du mobile (2) et dans une position de fin de dégagement où un bec de repos (17) de la palette (7, 9) est en contact avec un bec de repos (27) d'une dent (23, 24).Exhaust according to any one of claims 1 to 15, characterized in that the angular length (of, ds) of the impulse face (25) of the teeth (23, 24) of the first and second teeth, measured from the imaginary axis of rotation of the mobile (2), is greater than 2 °, in that the ratio between the angular length (Le) of the impulse face (14) of the first pallet (7) and the angular length (of) of the impulse face (25) of the teeth (23) of the first toothing is greater than 2.5, and in that the ratio of the angular length (Ls) of the impulse face (14) of the second pallet (9) and the angular length (ds) of the impulse face (25) of the teeth (24) of the second toothing is greater than 2.5, the length angular (Le, Ls) of the impulse face (14) of each of the vanes (7, 9) being measured from the imaginary axis of rotation of the mobile (2) and in an end of disengagement position where a nozzle of rest (17) of the pallet (7, 9) is in contact with a rest (27) of a tooth (23, 24). Echappement selon l'une quelconque des revendications 1 à 16, caractérisé en ce que l'angle de levée de l'ancre (1) est supérieur à 15°.Exhaust according to any one of claims 1 to 16, characterized in that the lifting angle of the anchor (1) is greater than 15 °. Echappement selon la revendication 17, caractérisé en ce que l'angle de levée de l'ancre (1) est supérieur à 16,5°.Exhaust according to claim 17, characterized in that the lifting angle of the anchor (1) is greater than 16.5 °.
EP06021911A 2006-10-19 2006-10-19 Lever escapement Withdrawn EP1914605A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06021911A EP1914605A1 (en) 2006-10-19 2006-10-19 Lever escapement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06021911A EP1914605A1 (en) 2006-10-19 2006-10-19 Lever escapement

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EP1914605A1 true EP1914605A1 (en) 2008-04-23

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EP06021911A Withdrawn EP1914605A1 (en) 2006-10-19 2006-10-19 Lever escapement

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EP (1) EP1914605A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011121432A1 (en) 2010-04-01 2011-10-06 Patek Philippe Sa Geneve Escapement for a timepiece, with impact protection
EP2400352A1 (en) * 2010-06-22 2011-12-28 The Swatch Group Research and Development Ltd. Escapement system for a timepiece
WO2014146842A1 (en) * 2013-03-22 2014-09-25 Omega Sa Unitary coaxial escapement anchor
JP2015025719A (en) * 2013-07-25 2015-02-05 セイコーインスツル株式会社 Escapement, movement for use in timepieces, and timepiece
JP2015025721A (en) * 2013-07-25 2015-02-05 セイコーインスツル株式会社 Gears for use in timepiece, escape mechanism, movement for use in timepiece, and mechanical timepiece
CN109254517A (en) * 2017-07-12 2019-01-22 天津海鸥表业集团有限公司 Escapement speed regulation module of watch and application

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CH93617A (en) * 1919-09-20 1922-03-16 Tavannes Watch Co Sa Anchor escapement.
US2133216A (en) * 1936-03-07 1938-10-11 Edward E Taliaferro Escapement
DE2520758A1 (en) * 1975-05-09 1976-11-18 Paul Merkle Timepiece indexing mechanism using two coupled indexing wheels - wheels cooperate with double anchor arm
EP1045297A1 (en) * 1999-04-12 2000-10-18 Omega SA Coaxial lever escapement
EP1517197A1 (en) * 2003-09-22 2005-03-23 Paul Gerber Escapement for a watch

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH93617A (en) * 1919-09-20 1922-03-16 Tavannes Watch Co Sa Anchor escapement.
US2133216A (en) * 1936-03-07 1938-10-11 Edward E Taliaferro Escapement
DE2520758A1 (en) * 1975-05-09 1976-11-18 Paul Merkle Timepiece indexing mechanism using two coupled indexing wheels - wheels cooperate with double anchor arm
EP1045297A1 (en) * 1999-04-12 2000-10-18 Omega SA Coaxial lever escapement
EP1517197A1 (en) * 2003-09-22 2005-03-23 Paul Gerber Escapement for a watch

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011121432A1 (en) 2010-04-01 2011-10-06 Patek Philippe Sa Geneve Escapement for a timepiece, with impact protection
US8757869B2 (en) 2010-04-01 2014-06-24 Patek Philippe Sa Geneve Impact-proof timepiece escapement
EP2400352A1 (en) * 2010-06-22 2011-12-28 The Swatch Group Research and Development Ltd. Escapement system for a timepiece
CN103026303A (en) * 2010-06-22 2013-04-03 斯沃奇集团研究和开发有限公司 Escapement system for a timepiece
CN105319939A (en) * 2010-06-22 2016-02-10 斯沃奇集团研究和开发有限公司 Escapement system for a timepiece
WO2014146842A1 (en) * 2013-03-22 2014-09-25 Omega Sa Unitary coaxial escapement anchor
JP2015025719A (en) * 2013-07-25 2015-02-05 セイコーインスツル株式会社 Escapement, movement for use in timepieces, and timepiece
JP2015025721A (en) * 2013-07-25 2015-02-05 セイコーインスツル株式会社 Gears for use in timepiece, escape mechanism, movement for use in timepiece, and mechanical timepiece
CN109254517A (en) * 2017-07-12 2019-01-22 天津海鸥表业集团有限公司 Escapement speed regulation module of watch and application
CN109254517B (en) * 2017-07-12 2023-11-07 天津海鸥表业集团有限公司 Escapement speed regulation module of watch and application

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