EP1045297A1 - Coaxial lever escapement - Google Patents

Coaxial lever escapement Download PDF

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Publication number
EP1045297A1
EP1045297A1 EP99107164A EP99107164A EP1045297A1 EP 1045297 A1 EP1045297 A1 EP 1045297A1 EP 99107164 A EP99107164 A EP 99107164A EP 99107164 A EP99107164 A EP 99107164A EP 1045297 A1 EP1045297 A1 EP 1045297A1
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EP
European Patent Office
Prior art keywords
anchor
wheel
exhaust
teeth
fork
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.)
Granted
Application number
EP99107164A
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German (de)
French (fr)
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EP1045297B1 (en
Inventor
Kilian Eisenegger
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Omega SA
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Omega SA
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Filing date
Publication date
Application filed by Omega SA filed Critical Omega SA
Priority to EP19990107164 priority Critical patent/EP1045297B1/en
Priority to DE69909236T priority patent/DE69909236T2/en
Priority to JP2000109192A priority patent/JP2000304874A/en
Priority to CNB001067109A priority patent/CN1188754C/en
Publication of EP1045297A1 publication Critical patent/EP1045297A1/en
Priority to HK01102665A priority patent/HK1032120A1/en
Application granted granted Critical
Publication of EP1045297B1 publication Critical patent/EP1045297B1/en
Anticipated expiration legal-status Critical
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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
    • G04B15/14—Component parts or constructional details, e.g. construction of the lever or the escape wheel
    • 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 a one-piece coaxial exhaust timepiece comprising first and second escapement wheels mounted coaxially the first on the second, an intermediate wheel meshing with the first escape wheel, a balance plate carrying a plateau pin and a pulse paddle arranged for cooperate with the teeth carried by the second escape wheel, and a anchor located at the first escape wheel, this anchor comprising a fork cooperating with the plate pin, a pallet impulse arranged to cooperate with the first wheel teeth exhaust, and first and second rest paddles arranged to cooperate with the teeth of the second escape wheel.
  • FIGS. 1 and 2 of the present description which represents the prior art.
  • the height of wheels 2 and 3 of the coaxial exhaust can be considered a disadvantage for using this escapement in watches extra-flat, G. Daniels imagined an execution without an exhaust gear as was also the case with the execution set out in the patent cited more high.
  • the wheel 2 provides a double function: that of the exhaust pinion meshing with the intermediate wheel 4 and that of the escape wheel cooperating with the pallet 10 of the anchor 1, which saves an exhaust pinion which would overcome the wheels 2 and 3 and would increase the height of the assembly as is the case with the description of the cited patent.
  • the functioning of the version improved is similar to that of the cited patent.
  • the impulse to the plate 5 of the balance wheel is delivered by the wheel exhaust 3 via pallet 7 of plate 5, while the pulse by via the anchor 1 'is given by the escape wheel 2 via the pallet 10 and fork 9 of anchor 1 '.
  • the wheel 3 is blocked by one of the rest pallets 12 'or 13' of the anchor 1 '.
  • each of the first and second rest pallets is made of a monobloc stone engaged in a groove made in the anchor, said part projecting beyond one of the planar faces of the anchor and having a proper height to bring it to the level where the second wheel moves exhaust to cooperate with the teeth of said second wheel.
  • Figures 3 and 4 show in perspective, respectively seen from above and below the coaxial escapement with which the anchor 1 is associated according to the invention.
  • the coaxial exhaust includes a first escape wheel 2 mounted coaxially on a second exhaust wheel 3, of which it is integral.
  • An intermediate wheel 4 which may be the last of the finishing train driven by the barrel, turns in the direction of arrow F and transmits the driving force to the first wheel 2 exhaust with which it meshes.
  • Figures 3 and 4 show a platform 5 of the pendulum to which the conventional oscillator formed of the pendulum is linked and hairspring (not shown).
  • the plate 5 carries a pin 6 of the plate and a pulse palette 7. This pallet 7 is arranged to cooperate with the teeth 8 of the second escape wheel 3.
  • the anchor 1 is located at level of the first escape wheel 2.
  • the anchor 1 comprises a fork 9 which cooperates with the pin 6 of the plate 5.
  • the anchor comprises another pulse palette 10 arranged to cooperate with the teeth 11 of the first escape wheel 2.
  • the anchor finally comprises first 12 and second 13 rest paddles arranged to cooperate with the teeth 8 of the second escape wheel 3.
  • the anchor 1 according to the invention is remarkable in that each of the first 12 and second 13 pallets rest is made of a monobloc stone engaged in a groove 14 practiced in the thickness of the anchor 1, which distinguishes it from the prior art shown in Figure 2 where the pallet 12 'is engaged in a groove 27 practiced in a tenon 26 itself introduced into the anchor 1 '.
  • the stones 12 and 13 project beyond one of the planar faces of the anchor 1, in this case the face 15, and have a height such that they extend to the level where the second escape wheel 3 evolves to cooperate with the teeth 8 of said second wheel.
  • stones 12 and 13 are directly linked to anchor 1 without intermediate device.
  • Figure 5 is an enlarged plan view of the end portion of the anchor 1 which contains the fork 9 and FIG. 6 an enlargement of the zone VI of figure 5.
  • FIG. 5 shows the fork 9 provided with its horns, the pin 6 of tray introduced between the horns, and a dart 30, the latter also being shown in Figure 3.
  • the inner sections 16 and 17 of the fork 9 are rectilinear - this which is commonly the case - and not parallel - which is new.
  • FIG. 5 shows that the distance d separating the internal panels 16 and 17 from the fork 9 (sides drawn in solid lines) increases gradually as as we approach the bottom 18 of the fork. This so-called provision asymmetrical brings an advantage which we will explain now.
  • FIGS. 5 and 6 also show non-parallel sections 16 and 17, parallel sections 16 'and 17' drawn in dotted lines and which are used in known constructions.
  • the anchor 1 receives a pulse in the direction of arrow A
  • the anchor 1 receives a pulse in the direction of the same arrow A
  • the point of contact 32 is therefore higher on the periphery 33 of the pin 6 than does was the point of contact 31 on the same periphery 33.
  • the invention allows to gain the path that separates points 31 and 32 in the process of outlet of pin 6 of fork 9.
  • the friction path that exists between the initial contact point 32 and the ankle separation point with the pan 17, at the exit of the said ankle, is therefore shortened by the distance B which separates points 31 and 32.
  • it has been observed in the coaxial exhaust a more friction path as long as the existing path on a conventional exhaust. The improvement proposed is therefore all the more justified, although it could also be implemented on said conventional exhaust.
  • a second additional improvement consists in lubricating the pivots 20 and 21 of the shaft 19 which carries the anchor 1 (see FIG. 4). This lubrication has always avoided until today for fear of natural deterioration of the oil used. Oil free however i! a fretting phenomenon occurs corrosion "which is wear caused by dry friction on mobiles affected by small movements or vibrations. This results in a production iron oxide tending to seize the mechanism. We discovered however that with the oils known today, very liquid and not thickening, you can safely use them to oil the anchor pivots.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Table Equipment (AREA)
  • Adornments (AREA)
  • Micromachines (AREA)

Abstract

Coaxial release anchor (1) has first (12) and second (13) rest blades. Each blade is made from a single stone and engages in groove (14) machined in the anchor. Each blade stone rises above the level of the release anchor (1) so that it meshes in the te (8) of a second release wheel (3). The anchor itself is in the same plane as first release wheel (1).

Description

La présente invention est relative à un échappement coaxial d'une pièce d'horlogerie comprenant des première et seconde roues d'échappement montées coaxialement la première sur la seconde, une roue intermédiaire engrenant avec la première roue d'échappement, un plateau de balancier portant une cheville de plateau et une palette d'impulsion arrangée pour coopérer avec les dents portées par la seconde roue d'échappement, et une ancre située au niveau de la première roue d'échappement, cette ancre comportant une fourchette coopérant avec la cheville de plateau, une palette d'impulsion arrangée pour coopérer avec les dents de première roue d'échappement, et des première et seconde palettes de repos arrangées pour coopérer avec les dents de la seconde roue d'échappement.The present invention relates to a one-piece coaxial exhaust timepiece comprising first and second escapement wheels mounted coaxially the first on the second, an intermediate wheel meshing with the first escape wheel, a balance plate carrying a plateau pin and a pulse paddle arranged for cooperate with the teeth carried by the second escape wheel, and a anchor located at the first escape wheel, this anchor comprising a fork cooperating with the plate pin, a pallet impulse arranged to cooperate with the first wheel teeth exhaust, and first and second rest paddles arranged to cooperate with the teeth of the second escape wheel.

Le principe de fonctionnement d'un tel échappement a été décrit dans le brevet EP-B-0 018 796 et une amélioration visant à diminuer la hauteur du mécanisme est exposée dans l'ouvrage de G. Daniels intitulé "La Montre: Principes et Méthodes de Fabrication", pages 249 à 252, éditions Scriptar S.A., La Conversion / Lausanne, 1993.The operating principle of such an exhaust has been described in EP-B-0 018 796 and an improvement aimed at reducing the height of the mechanism is exposed in the work of G. Daniels entitled "The Watch: Principles and Methods of Manufacturing ", pages 249 to 252, editions Scriptar S.A., La Conversion / Lausanne, 1993.

Cette exécution améliorée est illustrée par les figures 1 et 2 de la présente description qui représente l'art antérieur. Comme la hauteur des roues 2 et 3 de l'échappement coaxial peut être considérée comme un désavantage pour l'utilisation de cet échappement dans les montres extraplates, G. Daniels a imaginé une exécution sans pignon d'échappement comme c'était encore le cas de l'exécution exposée dans le brevet cité plus haut. Dans cette version améliorée, on voit que la roue 2 assure une double fonction : celle de pignon d'échappement engrenant avec la roue intermédiaire 4 et celle de la roue d'échappement coopérant avec la palette 10 de l'ancre 1, ce qui fait l'économie d'un pignon d'échappement qui surmonterait les roues 2 et 3 et augmenterait la hauteur de l'ensemble comme c'est le cas de la description du brevet cité. A part cela le fonctionnement de la version améliorée est semblable à celle du brevet cité. Comme le montre la présente figure 1, l'impulsion au plateau 5 du balancier est délivrée par la roue d'échappement 3 via la palette 7 du plateau 5, alors que l'impulsion par l'intermédiaire de l'ancre 1' est donnée par la roue d'échappement 2 via la palette 10 et la fourchette 9 de l'ancre 1'. Une fois l'impulsion réalisée, la roue 3 est bloquée par une des palettes de repos 12' ou 13' de l'ancre 1'. This improved execution is illustrated by FIGS. 1 and 2 of the present description which represents the prior art. As the height of wheels 2 and 3 of the coaxial exhaust can be considered a disadvantage for using this escapement in watches extra-flat, G. Daniels imagined an execution without an exhaust gear as was also the case with the execution set out in the patent cited more high. In this improved version, we see that the wheel 2 provides a double function: that of the exhaust pinion meshing with the intermediate wheel 4 and that of the escape wheel cooperating with the pallet 10 of the anchor 1, which saves an exhaust pinion which would overcome the wheels 2 and 3 and would increase the height of the assembly as is the case with the description of the cited patent. Apart from that the functioning of the version improved is similar to that of the cited patent. As shown in this Figure 1, the impulse to the plate 5 of the balance wheel is delivered by the wheel exhaust 3 via pallet 7 of plate 5, while the pulse by via the anchor 1 'is given by the escape wheel 2 via the pallet 10 and fork 9 of anchor 1 '. Once the impulse is achieved, the wheel 3 is blocked by one of the rest pallets 12 'or 13' of the anchor 1 '.

L'ouvrage cité plus haut donne des indications sur la manière dont sont fixées les palettes de repos 12' et 13' sur l'ancre 1'. La façon de s'y prendre est montrée en figure 2 de la présente description. L'extrémité 25 de l'ancre 1' est pourvue d'un trou dans lequel est introduit un tenon 26. Ce tenon 26 est pourvu à son tour d'une fente 27 dans laquelle on engage la palette de repos 12'. Cette disposition amène la palette 12 au niveau de la roue 3 avec laquelle elle travaille et permet en même temps un ajustement complet de la profondeur de repos.The book cited above gives indications on how are fixed the rest pallets 12 'and 13' on the anchor 1 '. The way to go about it is shown in Figure 2 of this description. The end 25 of the anchor 1 'is provided with a hole into which a stud 26 is inserted. This stud 26 is in turn provided with a slot 27 into which the pallet of rest 12 '. This arrangement brings the pallet 12 to the level of the wheel 3 with which it works and at the same time allows a complete adjustment of the depth of rest.

De l'aveu même de l'auteur de l'ouvrage cité ci-dessus, la confection de l'échappement coaxial est difficile et exige des tolérances serrées. Selon cet auteur, l'échappement coaxial est plus complexe que l'échappement à ancre classique et des difficultés de construction peuvent être un stimulant incitant les fabricants à innover de telle sorte que ces difficultés soient évitées. Les difficultés citées expliquent d'ailleurs en partie pourquoi l'échappement coaxial n'équipe actuellement que quelques pièces d'horlogerie fabriquées et ajustées manuellement à grands frais. Si l'on veut donner une chance d'extension à ce type d'échappement, il faut chercher à le réaliser de telle sorte qu'il puisse être fabriqué industriellement et en séries.By the very admission of the author of the work cited above, the making of coaxial exhaust is difficult and requires tight tolerances. According to this author, coaxial escapement is more complex than anchor escapement classic and construction difficulties can be a stimulating incentive manufacturers to innovate so that these difficulties are avoided. The difficulties cited explain in part why the coaxial escapement currently only equips a few timepieces manufactured and adjusted manually at great expense. If we want to give a chance of extension to this type of exhaust, you have to try to make it so that it can be manufactured industrially and in series.

Ainsi en est-il de l'ancre de l'échappement décrit ci-dessus qui présente au moins un défaut à savoir la fixation des palettes de repos 12' et 13'. En effet, comme on l'a vu à propos de la figure 2, la palette n'est pas fixée directement sur l'ancre mais par l'intermédiaire d'un tenon 26 dont on pourrait se passer, d'abord parce que c'est une pièce supplémentaire, ensuite parce qu'il nécessite d'ajuster l'angle de repos, ce qui est fastidieux.So it is with the anchor of the exhaust described above which presents at least one defect, namely the fixing of the rest pallets 12 'and 13'. In effect, as we saw about figure 2, the pallet is not fixed directly on the anchor but via a tenon 26 of which could happen, first because it's an extra room, then because it requires adjusting the angle of rest, which is tedious.

Ainsi pour pallier le défaut cité ci-dessus, la présente invention est innovative en ce que chacune des première et seconde palettes de repos est faite d'une pierre monobloc engagée dans une rainure pratiquée dans l'ancre, ladite pièce dépassant une des faces planes de l'ancre et présentant une hauteur propre à l'amener au niveau où évolue la seconde roue d'échappement pour coopérer avec les dents de ladite seconde roue.Thus, to overcome the above-mentioned defect, the present invention is innovative in that each of the first and second rest pallets is made of a monobloc stone engaged in a groove made in the anchor, said part projecting beyond one of the planar faces of the anchor and having a proper height to bring it to the level where the second wheel moves exhaust to cooperate with the teeth of said second wheel.

D'autres innovations que celle citée ci-dessus sont encore apportées à l'ancre en question et seront décrites ci-après.Other innovations than that mentioned above are also made to the anchor in question and will be described below.

L'invention va être décrite maintenant en détail en s'appuyant sur la description qui va suivre, description illustrée par les dessins annexés donnés à titre d'exemple et parmi lesquels:

  • la figure 1 est une vue en perspective d'un échappement coaxial extraplat selon l'art antérieur,
  • la figure 2 est un détail montrant la fixation d'une palette de repos sur l'ancre selon l'art antérieur,
  • la figure 3 est une vue en perspective de dessus d'un échappement coaxial réalisé selon l'invention,
  • la figure 4 est une vue en perspective de dessous de l'échappement coaxial de la figure 3,
  • la figure 5 est une vue en plan d'une partie de l'ancre de l'échappement des figures 3 et 4 montrant la fourchette dans laquelle la cheville est introduite, et
  • la figure 6 est un agrandissement de la zone VI montrée en figure 5.
The invention will now be described in detail on the basis of the description which follows, a description illustrated by the appended drawings given by way of example and among which:
  • FIG. 1 is a perspective view of an extra flat coaxial exhaust according to the prior art,
  • FIG. 2 is a detail showing the attachment of a rest pallet to the anchor according to the prior art,
  • FIG. 3 is a perspective view from above of a coaxial exhaust produced according to the invention,
  • FIG. 4 is a perspective view from below of the coaxial exhaust of FIG. 3,
  • FIG. 5 is a plan view of part of the anchor of the exhaust from FIGS. 3 and 4 showing the fork into which the pin is introduced, and
  • FIG. 6 is an enlargement of zone VI shown in FIG. 5.

Les figures 3 et 4 montrent en perspective, respectivement vu de dessus et de dessous l'échappement coaxial auquel est associée l'ancre 1 selon l'invention. Si l'on considère la figure 3, l'échappement coaxial comprend une première roue 2 d'échappement montée coaxialement sur une seconde roue 3 d'échappement, dont elle est solidaire. Une roue intermédiaire 4, qui peut être la dernière du train de finissage entraíné par le barillet, tourne dans le sens de la flèche F et transmet la force motrice à la première roue 2 d'échappement avec laquelle elle engrène. Les figures 3 et 4 montrent un plateau 5 du balancier auquel est lié l'oscillateur classique formé du balancier et du spiral (non représentés). Le plateau 5 porte une cheville 6 de plateau et une palette 7 d'impulsion. Cette palette 7 est arrangée pour coopérer avec les dents 8 de la seconde roue d'échappement 3. L'ancre 1 est située au niveau de la première roue d'échappement 2. L'ancre 1 comporte une fourchette 9 qui coopère avec la cheville 6 du plateau 5. L'ancre comporte encore une palette d'impulsion 10 arrangée pour coopérer avec les dents 11 de la première roue d'échappement 2. L'ancre comporte enfin des première 12 et seconde 13 palettes de repos arrangées pour coopérer avec les dents 8 de la seconde roue d'échappement 3.Figures 3 and 4 show in perspective, respectively seen from above and below the coaxial escapement with which the anchor 1 is associated according to the invention. If we consider Figure 3, the coaxial exhaust includes a first escape wheel 2 mounted coaxially on a second exhaust wheel 3, of which it is integral. An intermediate wheel 4, which may be the last of the finishing train driven by the barrel, turns in the direction of arrow F and transmits the driving force to the first wheel 2 exhaust with which it meshes. Figures 3 and 4 show a platform 5 of the pendulum to which the conventional oscillator formed of the pendulum is linked and hairspring (not shown). The plate 5 carries a pin 6 of the plate and a pulse palette 7. This pallet 7 is arranged to cooperate with the teeth 8 of the second escape wheel 3. The anchor 1 is located at level of the first escape wheel 2. The anchor 1 comprises a fork 9 which cooperates with the pin 6 of the plate 5. The anchor comprises another pulse palette 10 arranged to cooperate with the teeth 11 of the first escape wheel 2. The anchor finally comprises first 12 and second 13 rest paddles arranged to cooperate with the teeth 8 of the second escape wheel 3.

Comme on le voit bien sur la figure 4, l'ancre 1 selon l'invention est remarquable en ce sens que chacune des première 12 et seconde 13 palettes de repos est faite d'une pierre monobloc engagée dans une rainure 14 pratiquée dans l'épaisseur de l'ancre 1, ce qui la distingue de l'art antérieur montré en figure 2 où la palette 12' est engagée dans une rainure 27 pratiquée dans un tenon 26 lui-même introduit dans l'ancre 1'. On observe aussi sur la figure 4 que les pierres 12 et 13 dépassent une des faces planes de l'ancre 1, en l'occurrence la face 15, et présentent une hauteur telle qu'elles s'étendent au niveau où évolue la seconde roue d'échappement 3 pour coopérer avec les dents 8 de ladite seconde roue. On comprend donc que, par cette disposition, les pierres 12 et 13 sont directement liées à l'ancre 1 sans artifice intermédiaire. On comprend aussi que, puisque ces pierres sont introduites dans les rainures 14 de l'ancre, elles possèdent d'emblée la bonne direction angulaire de repos sur les dents 8 de la roue 3. Cette direction est donnée donc par construction et l'on évite le réglage prévu dans l'art antérieur illustré à la figure 2. On notera de surcroít que les pierres 12 et 13 agissent ainsi en porte-à-faux, ce qui peut être considéré comme une construction audacieuse et en tout cas jamais proposée dans l'art antérieur. On notera encore, comme le montre la figure 3, que la profondeur des rainures 14 est assez grande pour un réglage de profondeur des palettes de repos.As can be seen in FIG. 4, the anchor 1 according to the invention is remarkable in that each of the first 12 and second 13 pallets rest is made of a monobloc stone engaged in a groove 14 practiced in the thickness of the anchor 1, which distinguishes it from the prior art shown in Figure 2 where the pallet 12 'is engaged in a groove 27 practiced in a tenon 26 itself introduced into the anchor 1 '. We observe also in figure 4 that the stones 12 and 13 project beyond one of the planar faces of the anchor 1, in this case the face 15, and have a height such that they extend to the level where the second escape wheel 3 evolves to cooperate with the teeth 8 of said second wheel. We therefore understand that, by this arrangement, stones 12 and 13 are directly linked to anchor 1 without intermediate device. We also understand that, since these stones are introduced into the grooves 14 of the anchor, they immediately have the correct angular direction of rest on the teeth 8 of the wheel 3. This direction is therefore given by construction and the adjustment provided in the art is avoided previous illustrated in Figure 2. Note also that the stones 12 and 13 act in a cantilever fashion, which can be considered a bold construction and in any case never proposed in the prior art. It will also be noted, as shown in FIG. 3, that the depth of the grooves 14 is large enough for a depth adjustment of the paddles rest.

On va décrire maintenant deux améliorations supplémentaires apportées à l'ancre 1, ces améliorations pouvant s'ajouter à celle décrite plus haut.We will now describe two additional improvements made to anchor 1, these improvements being able to be added to that described more high.

La première amélioration supplémentaire sera expliquée au moyen des figures 5 et 6. La figure 5 est une vue en plan agrandie de la partie extrême de l'ancre 1 qui contient la fourchette 9 et la figure 6 un agrandissement de la zone VI de la figure 5.The first additional improvement will be explained using the Figures 5 and 6. Figure 5 is an enlarged plan view of the end portion of the anchor 1 which contains the fork 9 and FIG. 6 an enlargement of the zone VI of figure 5.

La figure 5 montre la fourchette 9 munie de ses cornes, la cheville 6 de plateau introduite entre les cornes, et un dard 30, ce dernier étant aussi représenté en figure 3. Comme on l'observe en figure 5 et selon la présente invention, les pans intérieurs 16 et 17 de la fourchette 9 sont rectilignes - ce qui est communément le cas -, et non parallèles - ce qui est nouveau. En effet, la figure 5 montre que la distance d séparant les pans intérieurs 16 et 17 de la fourchette 9 (pans dessinés en traits pleins) va en augmentant au fur et à mesure que l'on s'approche du fond 18 de la fourchette. Cette disposition dite asymétrique apporte un avantage qu'on va expliquer maintenant.FIG. 5 shows the fork 9 provided with its horns, the pin 6 of tray introduced between the horns, and a dart 30, the latter also being shown in Figure 3. As seen in Figure 5 and according to this invention, the inner sections 16 and 17 of the fork 9 are rectilinear - this which is commonly the case - and not parallel - which is new. Indeed, FIG. 5 shows that the distance d separating the internal panels 16 and 17 from the fork 9 (sides drawn in solid lines) increases gradually as as we approach the bottom 18 of the fork. This so-called provision asymmetrical brings an advantage which we will explain now.

Les figures 5 et 6 présentent en plus des pans non parallèles 16 et 17, des pans parallèles 16' et 17' dessinés en pointillés et qui sont d'usage dans les constructions connues. Dans les constructions courantes, avec pans symétriques, et au moment où l'ancre 1 reçoit une impulsion dans le sens de la flèche A, il se produit un contact au point 31 entre le pan 17' et la cheville 6. Dans la construction de l'invention, avec pans non parallèles et au moment où l'ancre 1 reçoit une impulsion dans le sens de la même flèche A, il se produit un contact au point 32 entre le pan 17 et la cheville 6. Le point de contact 32 se trouve donc plus haut sur le pourtour 33 de la cheville 6 que ne l'était le point de contact 31 sur le même pourtour 33. Ainsi l'invention permet de gagner le chemin qui sépare les points 31 et 32 dans le processus de sortie de la cheville 6 de la fourchette 9. Le chemin de frottement qui existe entre le point de contact initial 32 et le point de séparation de la cheville d'avec le pan 17, à la sortie de ladite cheville, se trouve donc raccourci de la distance B qui sépare les points 31 et 32. Un chemin de frottement plus court entraínant bien naturellement un temps de frottement plus court, il en résulte un meilleur rendement du système ainsi qu'une meilleure précision. On notera qu'il a été observé dans l'échappement coaxial un chemin de frottement plus long que le chemin existant sur un échappement classique. L'amélioration proposée s'en trouve donc d'autant plus justifiée, bien qu'elle pourrait aussi être mise en oeuvre sur ledit échappement classique.FIGS. 5 and 6 also show non-parallel sections 16 and 17, parallel sections 16 'and 17' drawn in dotted lines and which are used in known constructions. In common constructions, with panels symmetrical, and when the anchor 1 receives a pulse in the direction of arrow A, there is a contact at point 31 between the pan 17 'and the ankle 6. In the construction of the invention, with non-parallel sections and at the time where the anchor 1 receives a pulse in the direction of the same arrow A, it produces a contact at point 32 between the pan 17 and the ankle 6. The point of contact 32 is therefore higher on the periphery 33 of the pin 6 than does was the point of contact 31 on the same periphery 33. Thus the invention allows to gain the path that separates points 31 and 32 in the process of outlet of pin 6 of fork 9. The friction path that exists between the initial contact point 32 and the ankle separation point with the pan 17, at the exit of the said ankle, is therefore shortened by the distance B which separates points 31 and 32. A shorter friction path naturally resulting in a shorter friction time, this results better system performance and better accuracy. We will note that it has been observed in the coaxial exhaust a more friction path as long as the existing path on a conventional exhaust. The improvement proposed is therefore all the more justified, although it could also be implemented on said conventional exhaust.

Une seconde amélioration supplémentaire consiste à lubrifier les pivots 20 et 21 de l'arbre 19 qui porte l'ancre 1 (voir figure 4). Cette lubrification a toujours été évitée jusqu'à aujourd'hui par crainte de détérioration naturelle de l'huile utilisée. Sans huile cependant i! se produit un phénomène de "fretting corrosion" qui est une usure provoquée à frottement sec sur des mobiles affectés de petits déplacements ou de vibrations. Il en résulte une production d'oxyde de fer tendant à gripper le mécanisme. On a découvert cependant qu'avec les huiles connues aujourd'hui, très liquides et ne s'épaississant pas, on peut sans crainte les utiliser pour huiler les pivots d'ancre.A second additional improvement consists in lubricating the pivots 20 and 21 of the shaft 19 which carries the anchor 1 (see FIG. 4). This lubrication has always avoided until today for fear of natural deterioration of the oil used. Oil free however i! a fretting phenomenon occurs corrosion "which is wear caused by dry friction on mobiles affected by small movements or vibrations. This results in a production iron oxide tending to seize the mechanism. We discovered however that with the oils known today, very liquid and not thickening, you can safely use them to oil the anchor pivots.

Claims (3)

Echappement coaxial d'une pièce d'horlogerie, comprenant des première (2) et seconde (3) roues d'échappement montées coaxialement la première sur la seconde, une roue intermédiaire (4) engrenant avec la première roue (2) d'échappement, un plateau (5) de balancier portant une cheville (6) de plateau et une palette (7) d'impulsion arrangée pour coopérer avec les dents (8) portées par la seconde roue (3) d'échappement, et une ancre (1) située au niveau de la première roue (2) d'échappement, cette ancre comportant une fourchette (9) coopérant avec la cheville (6) de plateau (5), une palette (10) d'impulsion arrangée pour coopérer avec les dents (11) de la première roue (2) d'échappement, et des première (12) et seconde (13) palettes de repos arrangées pour coopérer avec les dents (8) de la seconde roue (3) d'échappement, caractérisé par le fait que chacune des première (12) et seconde (13) palettes de repos est faite d'une pierre monobloc engagée dans une rainure (14) pratiquée dans l'ancre (1), ladite pierre dépassant une (15) des faces planes de l'ancre et présentant une hauteur (h) telle que ladite pierre s'étend au niveau des dents (8) de ladite seconde roue d'échappement (3).Coaxial escapement of a timepiece, comprising first (2) and second (3) escape wheels mounted coaxially first on the second, an intermediate wheel (4) meshing with the first exhaust wheel (2), a balance plate (5) carrying a dowel pin (6) and a pulse pallet (7) arranged to cooperate with the teeth (8) carried by the second exhaust wheel (3), and a anchor (1) located at the level of the first escape wheel (2), this anchor comprising a fork (9) cooperating with the pin (6) of plate (5), a pulse pallet (10) arranged to cooperate with the teeth (11) of the first exhaust wheel (2), and of the first (12) and second (13) rest paddles arranged to cooperate with the teeth (8) of the second escape wheel (3), characterized in that each first (12) and second (13) rest pallets is made of a stone monobloc engaged in a groove (14) formed in the anchor (1), said stone protruding from one (15) of the plane faces of the anchor and having a height (h) such that said stone extends at the teeth (8) of said second escape wheel (3). Echappement selon la revendication 1, caractérisé par le fait que les pans intérieurs (16, 17) que présente la fourchette (9) sont non parallèles, la distance (d) séparant ces pans allant en augmentant progressivement en direction du fond (18) de ladite fourchette.Exhaust according to claim 1, characterized in that the internal sections (16, 17) that the fork (9) has, are not parallel, the distance (d) separating these sections progressively increasing in direction of the bottom (18) of said fork. Echappement selon la revendication 1, caractérisé par le fait que l'arbre (19) de l'ancre (1) est pourvu de pivots (20, 21) lubrifiés.Exhaust according to claim 1, characterized in that the shaft (19) of the anchor (1) is provided with lubricated pivots (20, 21).
EP19990107164 1999-04-12 1999-04-12 Coaxial lever escapement Expired - Lifetime EP1045297B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP19990107164 EP1045297B1 (en) 1999-04-12 1999-04-12 Coaxial lever escapement
DE69909236T DE69909236T2 (en) 1999-04-12 1999-04-12 Coaxial anchor escapement
JP2000109192A JP2000304874A (en) 1999-04-12 2000-04-11 Coaxial lever escapement
CNB001067109A CN1188754C (en) 1999-04-12 2000-04-12 Escapements for coaxial control level
HK01102665A HK1032120A1 (en) 1999-04-12 2001-04-12 Coaxial lever escapement.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19990107164 EP1045297B1 (en) 1999-04-12 1999-04-12 Coaxial lever escapement

Publications (2)

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EP1045297A1 true EP1045297A1 (en) 2000-10-18
EP1045297B1 EP1045297B1 (en) 2003-07-02

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Family Applications (1)

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EP19990107164 Expired - Lifetime EP1045297B1 (en) 1999-04-12 1999-04-12 Coaxial lever escapement

Country Status (5)

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EP (1) EP1045297B1 (en)
JP (1) JP2000304874A (en)
CN (1) CN1188754C (en)
DE (1) DE69909236T2 (en)
HK (1) HK1032120A1 (en)

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WO2004008258A3 (en) * 2002-07-11 2004-07-29 Detra Sa Escapement device
EP1445669A1 (en) * 2003-02-10 2004-08-11 Richemont International S.A. Constant force escapement mechanism for a timepiece with indirect seconds
EP1517197A1 (en) * 2003-09-22 2005-03-23 Paul Gerber Escapement for a watch
EP1914605A1 (en) * 2006-10-19 2008-04-23 Patek, Philippe SA Lever escapement
EP1983388A1 (en) * 2007-04-18 2008-10-22 ETA SA Manufacture Horlogère Suisse Direct-pulse escapement for timepiece
EP1983390A1 (en) * 2007-04-18 2008-10-22 ETA SA Manufacture Horlogère Suisse Lever escapement comprising two escape wheels
EP1998236A1 (en) * 2007-05-30 2008-12-03 Omega SA Anchor escapement for a timepiece
US7553068B2 (en) 2007-04-18 2009-06-30 Eta Sa Manufacture Horlogère Suisse Lever escapement for a timepiece
US7607822B2 (en) 2007-04-18 2009-10-27 Eta Sa Manufacture Horlogère Suisse Escapement including two escape wheels
WO2011121432A1 (en) * 2010-04-01 2011-10-06 Patek Philippe Sa Geneve Escapement for a timepiece, with impact protection
EP2400351A1 (en) 2010-06-22 2011-12-28 Omega SA Single-piece mobile element for a clock piece
EP2595005A1 (en) 2011-11-16 2013-05-22 Omega SA Single-block mobile for a timepiece
WO2016113704A2 (en) 2015-01-16 2016-07-21 Creaditive Ag Timepiece, control element and method for operating a control element with high control quality
CN107924157A (en) * 2015-08-25 2018-04-17 西铁城时计株式会社 The escapement of clock and watch
EP3557334A1 (en) * 2018-04-17 2019-10-23 Dominique Renaud SA Escapement mechanism with lock pallet and timepiece comprising such an escapement mechanism
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EP1580625A1 (en) * 2004-03-23 2005-09-28 Asulab S.A. Device and method for fixing a pallet on an escapement anchor in a watch movement
DE602006005672D1 (en) * 2005-07-04 2009-04-23 Kestler Jens HIGHLY EFFICIENT LEVER-LOADING DEVICE
ATE433136T1 (en) * 2007-03-09 2009-06-15 Eta Sa Mft Horlogere Suisse ESCAPEMENT WITH TANGENTIAL IMPULSES
CH705276B1 (en) * 2007-12-28 2013-01-31 Chopard Technologies Sa Body workout and transmission to a lever escapement, and exhaust tray being equipped and timepiece comprising them.
JP6206877B2 (en) * 2014-03-06 2017-10-04 セイコーインスツル株式会社 Escapement, watch movement and watch
JP6787098B2 (en) * 2016-12-13 2020-11-18 セイコーエプソン株式会社 How to disengage watch movements, mechanical watches and claw levers
EP3489763B1 (en) * 2017-11-22 2021-06-16 Nivarox-FAR S.A. Pallet for watch movement escapement
EP3770694B1 (en) * 2019-07-23 2021-12-08 Omega SA Timepiece stop-cage comprising two elastic stopping elements
EP3770693B1 (en) 2019-07-23 2022-08-31 Omega SA Timepiece stop-cage mechanism with stop wheel

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WO2004008258A3 (en) * 2002-07-11 2004-07-29 Detra Sa Escapement device
EP1445669A1 (en) * 2003-02-10 2004-08-11 Richemont International S.A. Constant force escapement mechanism for a timepiece with indirect seconds
US6997602B2 (en) 2003-02-10 2006-02-14 Richemont International S.A. Constant-force device for indirect-second watches
EP1517197A1 (en) * 2003-09-22 2005-03-23 Paul Gerber Escapement for a watch
EP1914605A1 (en) * 2006-10-19 2008-04-23 Patek, Philippe SA Lever escapement
US7607822B2 (en) 2007-04-18 2009-10-27 Eta Sa Manufacture Horlogère Suisse Escapement including two escape wheels
EP1983388A1 (en) * 2007-04-18 2008-10-22 ETA SA Manufacture Horlogère Suisse Direct-pulse escapement for timepiece
EP1983390A1 (en) * 2007-04-18 2008-10-22 ETA SA Manufacture Horlogère Suisse Lever escapement comprising two escape wheels
US7708455B2 (en) 2007-04-18 2010-05-04 Eta Sa Manufacture Horlogère Suisse Direct impulse escapement for timepiece
US7553068B2 (en) 2007-04-18 2009-06-30 Eta Sa Manufacture Horlogère Suisse Lever escapement for a timepiece
US7604395B2 (en) 2007-04-18 2009-10-20 Eta Sa Manufacture Horlogère Suisse Anchor escapement including two escape wheel sets
US8308346B2 (en) 2007-05-30 2012-11-13 Omega Sa Lever escapement for a timepiece
US7661874B2 (en) 2007-05-30 2010-02-16 Omega S.A. Lever escapement for a timepiece
WO2008145539A1 (en) * 2007-05-30 2008-12-04 Omega Sa Lever escapement for timepiece
EP1998236A1 (en) * 2007-05-30 2008-12-03 Omega SA Anchor escapement for a timepiece
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
EP2400351A1 (en) 2010-06-22 2011-12-28 Omega SA Single-piece mobile element for a clock piece
US8439557B2 (en) 2010-06-22 2013-05-14 Omega S.A. Single piece wheel set for a timepiece
EP2595005A1 (en) 2011-11-16 2013-05-22 Omega SA Single-block mobile for a timepiece
WO2013072158A1 (en) 2011-11-16 2013-05-23 Omega Sa One-piece mobile for a timepiece
DE212012000207U1 (en) 2011-11-16 2014-07-18 Omega Sa Mobile monobloc element for a timepiece
WO2016113704A2 (en) 2015-01-16 2016-07-21 Creaditive Ag Timepiece, control element and method for operating a control element with high control quality
CN107924157A (en) * 2015-08-25 2018-04-17 西铁城时计株式会社 The escapement of clock and watch
EP3321747A4 (en) * 2015-08-25 2019-03-20 Citizen Watch Co., Ltd. Watch escapement
CN107924157B (en) * 2015-08-25 2019-12-13 西铁城时计株式会社 Escapement mechanism for a timepiece
US10534319B2 (en) 2015-08-25 2020-01-14 Citizen Watch Co., Ltd. Escapement for timepiece
EP3557334A1 (en) * 2018-04-17 2019-10-23 Dominique Renaud SA Escapement mechanism with lock pallet and timepiece comprising such an escapement mechanism
WO2019201976A1 (en) * 2018-04-17 2019-10-24 Dominique Renaud Sa Escapement mechanism with a rest lever and timepiece provided with such an escapement mechanism
US20210149342A1 (en) * 2018-04-17 2021-05-20 Eric FREYMOND Escapement mechanism with a rest lever and timepiece provided with such an escapement mechanism
US11846913B2 (en) * 2018-04-17 2023-12-19 François Besse Escapement mechanism with locking anchor and timepiece provided with such an escapement mechanism
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US11796962B2 (en) 2020-04-23 2023-10-24 Eta Sa Manufacture Horlogère Suisse Escapement mechanism of a timepiece

Also Published As

Publication number Publication date
HK1032120A1 (en) 2001-07-06
DE69909236T2 (en) 2004-04-22
CN1270331A (en) 2000-10-18
JP2000304874A (en) 2000-11-02
EP1045297B1 (en) 2003-07-02
DE69909236D1 (en) 2003-08-07
CN1188754C (en) 2005-02-09

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