EP1637938A1 - Anchor pallet for a watch movement - Google Patents

Anchor pallet for a watch movement Download PDF

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Publication number
EP1637938A1
EP1637938A1 EP04022204A EP04022204A EP1637938A1 EP 1637938 A1 EP1637938 A1 EP 1637938A1 EP 04022204 A EP04022204 A EP 04022204A EP 04022204 A EP04022204 A EP 04022204A EP 1637938 A1 EP1637938 A1 EP 1637938A1
Authority
EP
European Patent Office
Prior art keywords
plane
channel
lubricant
pallet
pulse
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.)
Withdrawn
Application number
EP04022204A
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German (de)
French (fr)
Inventor
Hans-Georg Hintze
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Glashuetter Uhrenbetrieb GmbH
Original Assignee
Glashuetter Uhrenbetrieb GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Glashuetter Uhrenbetrieb GmbH filed Critical Glashuetter Uhrenbetrieb GmbH
Priority to EP04022204A priority Critical patent/EP1637938A1/en
Priority to DE602005027643T priority patent/DE602005027643D1/en
Priority to EP20050019154 priority patent/EP1637939B1/en
Priority to JP2005260337A priority patent/JP4669354B2/en
Priority to CN2005101034773A priority patent/CN1749886B/en
Priority to US11/227,294 priority patent/US7338200B2/en
Publication of EP1637938A1 publication Critical patent/EP1637938A1/en
Priority to HK06105287.5A priority patent/HK1085279A1/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Withdrawn legal-status Critical Current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
    • G04B15/14—Component parts or constructional details, e.g. construction of the lever or the escape wheel

Definitions

  • the present invention generally relates to pallets of an escapement mechanism anchor for a watch movement. More particularly, the invention relates to anchor vanes having a channel serving as a lubricant reservoir to provide improved lubrication between the pallet and the teeth of the escape wheel.
  • Lubricating the escapements of watch movements with ruby paddles is a delicate process.
  • the method of disposing a drop of lubricant on the teeth of the escape wheel does not ensure lubrication over a long period of time to the extent that the lubricant is rapidly removed to the rest plane of the pallet on which it accumulates, so that it is no longer available for the desired lubrication.
  • the patent CH 116 857 proposes to solve this problem by piercing right through the pallets anchor by a capillary channel which extends between the rest plane and the vanishing plane of the pallet, this channel serving as a reservoir lubricant .
  • a disadvantage of this arrangement is that access to the channel is poor, so that the filling is difficult.
  • the patent CH 685 463 attempts to remedy these drawbacks by proposing to provide on at least one of the side faces of the pallet a groove open on the outside which connects the rest plane to the rear face of the pallet.
  • the impact on the pallet at the moment of the impulse may cause said lubricant out of the groove to the extent that The capillarity effect in an open groove is less than that in a closed channel.
  • Patent CH 690 013 proposes to overcome the above drawbacks by providing an open capillary slot on the rest, pulse and leakage planes and in which the lubricant is received. Such an embodiment is unfavorable for the operation of the exhaust since the tooth of the escape wheel moves along two faces during the pulse, which can cause additional wear.
  • the present invention aims to overcome the aforementioned drawbacks as well as others by providing an anchor pallet for a watch movement to ensure improved and prolonged lubrication of the exhaust.
  • the invention relates to an anchor pallet intended to cooperate with the teeth of an escape wheel of a clockwork movement, said pallet comprising a leakage plane and an impulse plane and at least one a capillary channel serving as a reservoir for a lubricant, characterized in that said capillary channel connects said flight plane to said impulse plane.
  • This configuration of the capillary channel which extends directly from the plane of leakage to the impulse plane makes it possible to significantly reduce the length of the capillary channel with respect to that of the channels of the prior art, without affecting the quality of the lubrication. at the contact between the pallet and the teeth of the escape wheel.
  • the pallet according to the invention makes it possible to achieve a reduction in the length of this channel of the order of 30%.
  • the problem of creating bubbles in the channel is less critical and the cleaning of the channel is facilitated. It will be noted that, thanks to the arrangement of the invention, it has been surprisingly successful to bring a sufficient quantity of the lubricant onto the rest plane without the channel in question being connected to this plane.
  • the channel opens into the first third of the pulse plane starting from the output edge of the pulse plane.
  • the section of the channel has a variable profile over its entire length and preferably the channel is frustoconical and converges in the direction of the pulse plane.
  • the taper of the capillary channel advantageously makes it possible to give a direction to the displacement of the lubricant in the channel, the lubricant being attracted by capillarity towards the pulse plane during the passage of the tooth on this pulse plane.
  • the dimension of the channel where it opens on the pulse plane is less than the thickness of the teeth of the escape wheel. In this way, it prevents the teeth of the escape wheel from entering the portion of the capillary channel that opens on the pulse plane and thereby avoids premature wear. It goes without saying that the exhaust will be adjusted so that the teeth of the escape wheel during their rotation pass next to the channel and preferably centered with respect to the channel. Note also in this regard that the pallet according to the invention allows the use of exhaust wheels whose teeth do not include the bevel usually made to concentrate the lubricant on the friction surface, in this case on the plane of 'impulse.
  • an anchor 1 having a conventional structure carrying two pallets 2 (only the output pallet having been shown in the drawing).
  • the pallet 2 is a generally ruby piece whose all faces are polished and which is driven and glued into a housing 4 formed in the arm 1a of the anchor 1.
  • the pallet 2 comprises a pulse plane 2a, a plane of rest 2b and a leakage plane 2c, the pulse plane 2a and the leakage plane 2c intersecting at an output edge or pulse nozzle 2d.
  • the pulse plane 2a and the rest plane 2b respectively cooperate with the teeth 6 of the escape wheel and more particularly with the rest plane 6a and the beak 6b of the teeth 6.
  • the escape wheel 6 rotates in a conventional manner step by step in the direction of the arrow F.
  • the particularly important lubrication points are therefore the pulse plane 2a and the rest plane 2b so that a presence of lubricant between the teeth of the wheel of exhaust and these plans is necessary during the different phases of operation of the exhaust.
  • the pallet 2 comprises a channel 8 whose dimensions allow it to behave as a capillary with respect to the lubricant 10 while also serving as a reservoir for this lubricant. It will be noted in this connection that the channel can advantageously be made using a laser beam parameterized appropriately.
  • the capillary channel 8 connects said leakage plane 2c to said pulse plane 2a and thus establishes a communication between these two planes.
  • the channel 8 comprises a lubricant inlet 8a disposed in the leakage plane 2c and an outlet orifice 8b of lubricant opening into the pulse plane 2a.
  • the inlet port 8a is located in the vicinity of the pulse nozzle 2d while the outlet orifice 8b is located in the first third of the pulse plane 2a from the pulse nozzle 2d.
  • the channel 8 opens substantially in the first third of the pulse plane 2a.
  • this configuration can reduce the channel length by about 30% and reach about xx mm.
  • the channel 8 extends in the plane of symmetry of the pallet 2.
  • the section of the channel 8 has a variable profile over its entire length and gradually decreases from the inlet orifice 8a to the outlet port 8b.
  • the channel 8 thus has in the example illustrated a convergent frustoconical shape in the direction of the pulse plane 2a.
  • the taper of the channel is typically between 3 ° and 10 ° and is preferably of the order of 6 °.
  • the section of the channel 8 can also be constant. In the case of a pallet comprising a channel 8, the latter typically has a mean diameter of the order of 3 / 100mm.
  • the lubricant 10 which is deposited on the leakage plane 2c of the pallet 2 in the form of a drop is introduced by capillarity into the channel 8 and filled the latter to the outlet orifice 8b at which it forms. a drop 12 which protrudes slightly from the pulse plane 2a.
  • the quantity of lubricant deposited on the leakage plane 2c is greater than the volume of the channel so that once the channel 8 has filled a drop 14 is also formed on the leakage plane 2c around the inlet orifice 8a of the channel 8.
  • the pallet 2 and a tooth 6 of the escape wheel are represented during the rest phase, that is to say when the rest plane 6a of the tooth 6 bears on the plane of rest 2b of the pallet so that the escape wheel is stopped. It can be seen that a lubricant film 16 is interposed between the rest plane 6a of the tooth 6 and the rest plane 2b of the pallet 2.
  • the beak 6b of the tooth 6 which bears a small amount of lubricant on its resting plane 6a and in the region of its spout 6b, leaves the resting plane 2b of the pallet 2 leaving a small amount of lubricant Q1 on the rest plane 2b of the pallet 2.
  • the rest spout 6b of the tooth 6 then sweeps the surface of the pulse plane 2a passing over the drop 12. Before the spout 6b passes over the drop 12, the lubricant disposed around it is then sufficient to lubricate the friction surfaces of the tooth and pallet. During the passage of the mouthpiece of the tooth on the drop, it causes a small amount of lubricant from the channel 8.
  • the channel 8 is filled again from the drop 14 disposed on the inlet port .
  • the lubricant Q2 taken by the tooth is distributed around the spout 6b as shown in Figure 4 which shows the position of the tooth 6 relative to the pallet 2 just before the end of the pulse, the spout of pulse 2d sliding on the pulse plane 6c of the tooth 6.
  • the escape wheel 6 is then ready to cooperate, by the rest plane 6a of the tooth 6 following, with the rest plane 2b of the pallet 2 , the lubricant quantities Q1 and Q2 forming the lubricant film 16 again when the rest plane of the tooth 6 bears again on the rest plane of the pallet 2.
  • the exhaust system When the exhaust system is running, it is thus forms a lubricant circuit which only returns the lubricant from the vanishing plane 2c of the pallet on the impulse plane but which, against all odds, ensures a sufficient and continuous lubrication of the friction surfaces of the pallets, in particular of the rest plane 2b during the different phases of the func exhaust system.
  • This lubrication is of course ensured until the lubricant reserve formed by the lubricant drop 12 disposed on the leakage plane 2c and the lubricant contained in the channel 8 has completely been exhausted, despite the fact that the outlet orifice 8b of the channel 8 does not lead to the rest plane 2b of the pallet 2.
  • the thickness of the teeth will be greater than the diameter of the outlet orifice. 8b of the canal. Typically this thickness will be twice the diameter of the outlet orifice.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Gears, Cams (AREA)
  • Lubricants (AREA)
  • General Details Of Gearings (AREA)

Abstract

The pallet has a capillary channel used as a lubricant reservoir. The channel connects an escape plane (2c) to an impulse plane (2a). The channel has an inlet opening (8a) located near an impulse nozzle (2d), and an outlet opening (8b) located in one-third of the impulse plane from the impulse nozzle. The capillary channel opens into the one-third of the impulse plane.

Description

La présente invention concerne généralement des palettes d'ancre de mécanisme d'échappement pour mouvement d'horlogerie. Plus particulièrement, l'invention concerne des palettes d'ancre présentant un canal servant de réservoir de lubrifiant pour assurer une lubrification améliorée entre la palette et les dents de la roue d'échappement.The present invention generally relates to pallets of an escapement mechanism anchor for a watch movement. More particularly, the invention relates to anchor vanes having a channel serving as a lubricant reservoir to provide improved lubrication between the pallet and the teeth of the escape wheel.

La lubrification des échappements des mouvements d'horlogerie ayant des palettes en rubis est un procédé délicat. Le procédé consistant à disposer une goutte de lubrifiant sur les dents de la roue d'échappement ne permet pas d'assurer une lubrification sur une longue durée dans la mesure où le lubrifiant est chassé rapidement vers le plan de repos de la palette sur lequel il s'accumule, de sorte qu'il n'est plus disponible pour la lubrification souhaitée.Lubricating the escapements of watch movements with ruby paddles is a delicate process. The method of disposing a drop of lubricant on the teeth of the escape wheel does not ensure lubrication over a long period of time to the extent that the lubricant is rapidly removed to the rest plane of the pallet on which it accumulates, so that it is no longer available for the desired lubrication.

Le brevet CH 116 857 propose de résoudre ce problème en perçant de part en part les palettes d'ancre par un canal capillaire qui s'étend entre le plan de repos et le plan de fuite de la palette, ce canal servant de réservoir au lubrifiant. Un inconvénient de cette disposition réside en ce que l'accès au canal est mal aisé, de sorte que le remplissage est délicat. De plus, compte tenu de la longueur du canal, il est difficile de le remplir sans que des bulles d'air s'y introduisent et empêchent la libre circulation du lubrifiant. Le nettoyage de tels canaux s'avère en outre difficile.The patent CH 116 857 proposes to solve this problem by piercing right through the pallets anchor by a capillary channel which extends between the rest plane and the vanishing plane of the pallet, this channel serving as a reservoir lubricant . A disadvantage of this arrangement is that access to the channel is poor, so that the filling is difficult. In addition, given the length of the channel, it is difficult to fill it without air bubbles enter and prevent the free flow of lubricant. Cleaning such channels is also difficult.

Le brevet CH 685 463 tente de remédier à ces inconvénients en proposant de ménager sur au moins l'une des faces latérales de la palette une gorge ouverte sur l'extérieur qui relie le plan de repos à la face arrière de la palette. Outre le fait que le lubrifiant dans la gorge est exposé à l'air et a donc tendance à se dégrader rapidement, le choc sur la palette au moment de l'impulsion risque d'entraîner ledit lubrifiant hors de la gorge dans la mesure où l'effet de capillarité dans une gorge ouverte est inférieur à celui dans un canal fermé.The patent CH 685 463 attempts to remedy these drawbacks by proposing to provide on at least one of the side faces of the pallet a groove open on the outside which connects the rest plane to the rear face of the pallet. In addition to the fact that the lubricant in the groove is exposed to the air and therefore tends to degrade rapidly, the impact on the pallet at the moment of the impulse may cause said lubricant out of the groove to the extent that The capillarity effect in an open groove is less than that in a closed channel.

Le brevet CH 690 013 propose de remédier aux inconvénients ci-dessus en réalisant une fente capillaire ouverte sur les plans de repos, d'impulsion et de fuite et dans laquelle est reçu le lubrifiant. Une telle réalisation est peu favorable pour le fonctionnement de l'échappement puisque la dent de la roue d'échappement se déplace le long de deux faces lors de l'impulsion, ce qui peut engendrer une usure supplémentaire.Patent CH 690 013 proposes to overcome the above drawbacks by providing an open capillary slot on the rest, pulse and leakage planes and in which the lubricant is received. Such an embodiment is unfavorable for the operation of the exhaust since the tooth of the escape wheel moves along two faces during the pulse, which can cause additional wear.

La présente invention a pour but de remédier aux inconvénients susmentionnés ainsi qu'à d'autres encore en fournissant une palette d'ancre pour mouvement d'horlogerie permettant d'assurer une lubrification améliorée et prolongée de l'échappement.The present invention aims to overcome the aforementioned drawbacks as well as others by providing an anchor pallet for a watch movement to ensure improved and prolonged lubrication of the exhaust.

A cet effet, l'invention concerne une palette d'ancre destinée à coopérer avec les dents d'une roue d'échappement d'un mouvement d'horlogerie, ladite palette comprenant un plan de fuite et un plan d'impulsion et au moins un canal capillaire servant de réservoir pour un lubrifiant, caractérisée en ce que ledit canal capillaire relie ledit plan de fuite audit plan d'impulsion.For this purpose, the invention relates to an anchor pallet intended to cooperate with the teeth of an escape wheel of a clockwork movement, said pallet comprising a leakage plane and an impulse plane and at least one a capillary channel serving as a reservoir for a lubricant, characterized in that said capillary channel connects said flight plane to said impulse plane.

Cette configuration du canal capillaire qui s'étend directement du plan de fuite au plan d'impulsion permet de réduire de manière significative la longueur du canal capillaire par rapport à celle des canaux de l'art antérieur et ceci sans altérer la qualité de la lubrification au niveau du contact entre la palette et les dents de la roue d'échappement. Typiquement, la palette selon l'invention permet d'atteindre une réduction de la longueur de ce canal de l'ordre de 30%. Comme la longueur du canal capillaire est raccourcie par rapport à celle des canaux de l'art antérieur, le problème de création de bulles dans le canal est moins critique et le nettoyage du canal est facilité. On notera que grâce à la disposition de l'invention on réussi de façon surprenante à amener une quantité suffisante du lubrifiant sur le plan de repos sans que le canal en question n'est de liaison avec ce plan.This configuration of the capillary channel which extends directly from the plane of leakage to the impulse plane makes it possible to significantly reduce the length of the capillary channel with respect to that of the channels of the prior art, without affecting the quality of the lubrication. at the contact between the pallet and the teeth of the escape wheel. Typically, the pallet according to the invention makes it possible to achieve a reduction in the length of this channel of the order of 30%. As the length of the capillary channel is shortened compared to that of the prior art channels, the problem of creating bubbles in the channel is less critical and the cleaning of the channel is facilitated. It will be noted that, thanks to the arrangement of the invention, it has been surprisingly successful to bring a sufficient quantity of the lubricant onto the rest plane without the channel in question being connected to this plane.

Selon un mode de réalisation avantageux, le canal débouche dans le premier tiers du plan d'impulsion en partant de l'arête de sortie du plan d'impulsion.According to an advantageous embodiment, the channel opens into the first third of the pulse plane starting from the output edge of the pulse plane.

Selon une caractéristique préférée, la section du canal présente un profil variable sur toute sa longueur et de préférence le canal est tronconique et converge en direction du plan d'impulsion.According to a preferred feature, the section of the channel has a variable profile over its entire length and preferably the channel is frustoconical and converges in the direction of the pulse plane.

La conicité du canal capillaire permet avantageusement de donner une direction au déplacement du lubrifiant dans le canal, le lubrifiant étant attiré par capillarité vers le plan d'impulsion lors du passage de la dent sur ce plan d'impulsion.The taper of the capillary channel advantageously makes it possible to give a direction to the displacement of the lubricant in the channel, the lubricant being attracted by capillarity towards the pulse plane during the passage of the tooth on this pulse plane.

Selon encore une autre caractéristique préférée de l'invention, la dimension du canal à l'endroit où il débouche sur le plan d'impulsion est inférieure à l'épaisseur des dents de la roue d'échappement. De cette façon, on évite que les dents de la roue d'échappement ne pénètrent dans la partie du canal capillaire qui débouche sur le plan d'impulsion et par là-même on évite une usure prématurée. Il va de soi que l'échappement sera réglé de manière que les dents de la roue d'échappement lors de leur rotation passent en regard du canal et de préférence de manière centrée par rapport au canal. On notera également à ce propos que la palette selon l'invention permet d'utiliser des roues d'échappement dont les dents ne comprennent pas le biseau habituellement réalisé pour concentrer le lubrifiant sur la surface de friction, en l'occurrence sur le plan d'impulsion.According to yet another preferred feature of the invention, the dimension of the channel where it opens on the pulse plane is less than the thickness of the teeth of the escape wheel. In this way, it prevents the teeth of the escape wheel from entering the portion of the capillary channel that opens on the pulse plane and thereby avoids premature wear. It goes without saying that the exhaust will be adjusted so that the teeth of the escape wheel during their rotation pass next to the channel and preferably centered with respect to the channel. Note also in this regard that the pallet according to the invention allows the use of exhaust wheels whose teeth do not include the bevel usually made to concentrate the lubricant on the friction surface, in this case on the plane of 'impulse.

D'autres caractéristiques et avantages de la présente invention apparaîtront plus clairement à la lecture de la description suivante d'exemples de réalisation, ladite description étant faite à titre non limitatif et en relation avec les dessins joints parmi lesquels :

  • la figure 1 représente en perspective une palette d'ancre selon l'invention contre laquelle s'appuie un flan d'une dent de la roue d'échappement; et
  • les figures 2 à 4 sont des vues en plan partielles d'une palette et d'une dent de la roue d'échappement à différents stade du passage de la dent sur la palette lors de la rotation de la roue d'échappement.
Other features and advantages of the present invention will emerge more clearly on reading the following description of exemplary embodiments, said description being given in a nonlimiting manner and in relation to the attached drawings among which:
  • FIG. 1 is a perspective view of an anchor pallet according to the invention against which a blank of a tooth of the escape wheel is based; and
  • Figures 2 to 4 are partial plan views of a pallet and a tooth of the escape wheel at different stages of the passage of the tooth on the pallet during the rotation of the escape wheel.

En se référant à la figure 1, on voit une ancre 1 ayant une structure classique portant deux palettes 2 (seule la palette de sortie ayant été représentée au dessin). La palette 2 est une pièce généralement en rubis dont toutes les faces sont polies et qui est chassée et collée dans un logement 4 ménagé dans le bras 1a de l'ancre 1. La palette 2 comprend un plan d'impulsion 2a, un plan de repos 2b et un plan de fuite 2c, le plan d'impulsion 2a et le plan de fuite 2c s'intersectant selon une arête de sortie ou bec d'impulsion 2d . Le plan d'impulsion 2a et le plan de repos 2b coopèrent respectivement avec les dents 6 de la roue d'échappement et plus particulièrement avec le plan de repos 6a et le bec de repos 6b des dents 6. La roue d'échappement 6 tourne de manière classique pas à pas dans le sens de la flèche F. Les points de lubrification particulièrement important sont donc le plan d'impulsion 2a et le plan de repos 2b de sorte qu'une présence de lubrifiant entre les dents de la roue d'échappement et ces plans est nécessaire au cours des différentes phases de fonctionnement de l'échappement.Referring to Figure 1, there is shown an anchor 1 having a conventional structure carrying two pallets 2 (only the output pallet having been shown in the drawing). The pallet 2 is a generally ruby piece whose all faces are polished and which is driven and glued into a housing 4 formed in the arm 1a of the anchor 1. The pallet 2 comprises a pulse plane 2a, a plane of rest 2b and a leakage plane 2c, the pulse plane 2a and the leakage plane 2c intersecting at an output edge or pulse nozzle 2d. The pulse plane 2a and the rest plane 2b respectively cooperate with the teeth 6 of the escape wheel and more particularly with the rest plane 6a and the beak 6b of the teeth 6. The escape wheel 6 rotates in a conventional manner step by step in the direction of the arrow F. The particularly important lubrication points are therefore the pulse plane 2a and the rest plane 2b so that a presence of lubricant between the teeth of the wheel of exhaust and these plans is necessary during the different phases of operation of the exhaust.

Pour ce faire, la palette 2 comprend un canal 8 dont les dimensions lui permette de se comporter comme un capillaire à l'égard du lubrifiant 10 tout en servant également de réservoir pour ce lubrifiant. On notera à ce propos que le canal peut être avantageusement réalisé à l'aide d'un faisceau laser paramétré de façon appropriée.To do this, the pallet 2 comprises a channel 8 whose dimensions allow it to behave as a capillary with respect to the lubricant 10 while also serving as a reservoir for this lubricant. It will be noted in this connection that the channel can advantageously be made using a laser beam parameterized appropriately.

Selon l'invention, le canal capillaire 8 relie ledit plan de fuite 2c audit plan d'impulsion 2a et établit ainsi une communication entre ces deux plans. Le canal 8 comprend un orifice d'entrée 8a de lubrifiant disposé dans le plan de fuite 2c et un orifice de sortie 8b de lubrifiant débouchant dans le plan d'impulsion 2a. L'orifice d'entrée 8a est situé au voisinage du bec d'impulsion 2d tandis que l'orifice de sortie 8b est situé dans le premier tiers du plan d'impulsion 2a à partir du bec d'impulsion 2d. Une telle configuration permet de réduire la longueur du canal capillaire 8 par rapport aux canaux de l'art antérieur ce qui évite notamment la formation de bulles dans le canal et donc le blocage du lubrifiant dans ce dernier. Dans le mode de réalisation illustré aux figures, on peut voir que le canal 8 débouche sensiblement dans le premier tiers du plan d'impulsion 2a. Typiquement, cette configuration permet de réduire la longueur du canal d'environ 30% et d'atteindre environ xx mm. De préférence, le canal 8 s'étend dans le plan de symétrie de la palette 2. On voit également que la section du canal 8 présente un profil variable sur toute sa longueur et diminue progressivement de l'orifice d'entrée 8a vers l'orifice de sortie 8b. Le canal 8 présente donc dans l'exemple illustré une forme tronconique convergente en direction du plan d'impulsion 2a. La conicité du canal est typiquement comprise entre 3° et 10° et est de préférence de l'ordre de 6°. Selon une variante, la section du canal 8 peut être également constante. Dans le cas d'une palette comprenant un canal 8, ce dernier présente typiquement un diamètre moyen de l'ordre de 3/100mm.According to the invention, the capillary channel 8 connects said leakage plane 2c to said pulse plane 2a and thus establishes a communication between these two planes. The channel 8 comprises a lubricant inlet 8a disposed in the leakage plane 2c and an outlet orifice 8b of lubricant opening into the pulse plane 2a. The inlet port 8a is located in the vicinity of the pulse nozzle 2d while the outlet orifice 8b is located in the first third of the pulse plane 2a from the pulse nozzle 2d. Such a configuration makes it possible to reduce the length of the capillary channel 8 with respect to the channels of the prior art, which in particular avoids the formation of bubbles in the channel and therefore the blockage of the lubricant therein. In the embodiment illustrated in the figures, it can be seen that the channel 8 opens substantially in the first third of the pulse plane 2a. Typically, this configuration can reduce the channel length by about 30% and reach about xx mm. Preferably, the channel 8 extends in the plane of symmetry of the pallet 2. It is also seen that the section of the channel 8 has a variable profile over its entire length and gradually decreases from the inlet orifice 8a to the outlet port 8b. The channel 8 thus has in the example illustrated a convergent frustoconical shape in the direction of the pulse plane 2a. The taper of the channel is typically between 3 ° and 10 ° and is preferably of the order of 6 °. According to one variant, the section of the channel 8 can also be constant. In the case of a pallet comprising a channel 8, the latter typically has a mean diameter of the order of 3 / 100mm.

Le lubrifiant 10 qui est déposé sur le plan de fuite 2c de la palette 2 sous la forme d'une goutte s'introduit par capillarité dans le canal 8 et rempli ce dernier jusqu'à l'orifice de sortie 8b au niveau duquel se forme une goutte 12 qui fait légèrement saillie à partir du plan d'impulsion 2a. La quantité de lubrifiant déposée sur le plan de fuite 2c est supérieure au volume du canal si bien qu'une fois le canal 8 rempli une goutte 14 se forme également sur le plan de fuite 2c autour de l'orifice d'entrée 8a du canal 8.The lubricant 10 which is deposited on the leakage plane 2c of the pallet 2 in the form of a drop is introduced by capillarity into the channel 8 and filled the latter to the outlet orifice 8b at which it forms. a drop 12 which protrudes slightly from the pulse plane 2a. The quantity of lubricant deposited on the leakage plane 2c is greater than the volume of the channel so that once the channel 8 has filled a drop 14 is also formed on the leakage plane 2c around the inlet orifice 8a of the channel 8.

A la figure 2, on a représenté la palette 2 et une dent 6 de la roue d'échappement lors de la phase de repos, c'est-à-dire lorsque le plan de repos 6a de la dent 6 appuie sur le plan de repos 2b de la palette de sorte que la roue d'échappement est arrêtée. On voit qu'un film de lubrifiant 16 est interposé entre le plan de repos 6a de la dent 6 et le plan de repos 2b de la palette 2.In FIG. 2, the pallet 2 and a tooth 6 of the escape wheel are represented during the rest phase, that is to say when the rest plane 6a of the tooth 6 bears on the plane of rest 2b of the pallet so that the escape wheel is stopped. It can be seen that a lubricant film 16 is interposed between the rest plane 6a of the tooth 6 and the rest plane 2b of the pallet 2.

Au cours de la phase suivante représentée à la figure 3, le bec de repos 6b de la dent 6 qui porte une petite quantité de lubrifiant sur son plan de repos 6a et dans la région de son bec de repos 6b, quitte le plan de repos 2b de la palette 2 en laissant une petite quantité de lubrifiant Q1 sur le plan de repos 2b de la palette 2. Le bec de repos 6b de la dent 6 balaie alors la surface du plan d'impulsion 2a en passant sur la goutte 12. Avant que le bec de repos 6b ne passe sur la goutte 12, le lubrifiant disposé autour de celui-ci est alors suffisant pour assurer la lubrification des surfaces de frottement de la dent et de la palette. Lors du passage du bec de repos de la dent sur la goutte, celui-ci entraîne une petite quantité de lubrifiant à partir du canal 8. Le canal 8 se rempli à nouveau à partir de la goutte 14 disposée sur l'orifice d'entrée. Le lubrifiant Q2 prélevé par la dent se répartit autour du bec de repos 6b comme cela est illustré à la figure 4 qui représente la position de la dent 6 par rapport à la palette 2 juste avant la fin de l'impulsion, le bec d'impulsion 2d glissant sur le plan d'impulsion 6c de la dent 6. La roue d'échappement 6 est alors prête à venir coopérer, par le plan de repos 6a de la dent 6 suivante, avec le plan de repos 2b de la palette 2, les quantités de lubrifiant Q1 et Q2 formant à nouveau le film de lubrifiant 16 lorsque le plan de repos de la dent 6 vient à nouveau en appui sur le plan de repos de la palette 2. Lors du fonctionnement de l'échappement, il se forme ainsi un circuit de lubrifiant qui ne ramène le lubrifiant que depuis le plan de fuite 2c de la palette sur le plan d'impulsion mais qui assure contre toute attente une lubrification suffisante et continue des surfaces de frottement des palettes notamment du plan de repos 2b au cours des différentes phases de fonctionnement de l'échappement. Cette lubrification est bien entendu assurée jusqu'à épuisement complet de la réserve de lubrifiant formée par la goutte 12 de lubrifiant disposée sur le plan de fuite 2c et le lubrifiant contenu dans le canal 8 et ceci en dépit du fait que l'orifice de sortie 8b du canal 8 ne débouche pas sur le plan de repos 2b de la palette 2.During the next phase shown in FIG. 3, the beak 6b of the tooth 6 which bears a small amount of lubricant on its resting plane 6a and in the region of its spout 6b, leaves the resting plane 2b of the pallet 2 leaving a small amount of lubricant Q1 on the rest plane 2b of the pallet 2. The rest spout 6b of the tooth 6 then sweeps the surface of the pulse plane 2a passing over the drop 12. Before the spout 6b passes over the drop 12, the lubricant disposed around it is then sufficient to lubricate the friction surfaces of the tooth and pallet. During the passage of the mouthpiece of the tooth on the drop, it causes a small amount of lubricant from the channel 8. The channel 8 is filled again from the drop 14 disposed on the inlet port . The lubricant Q2 taken by the tooth is distributed around the spout 6b as shown in Figure 4 which shows the position of the tooth 6 relative to the pallet 2 just before the end of the pulse, the spout of pulse 2d sliding on the pulse plane 6c of the tooth 6. The escape wheel 6 is then ready to cooperate, by the rest plane 6a of the tooth 6 following, with the rest plane 2b of the pallet 2 , the lubricant quantities Q1 and Q2 forming the lubricant film 16 again when the rest plane of the tooth 6 bears again on the rest plane of the pallet 2. When the exhaust system is running, it is thus forms a lubricant circuit which only returns the lubricant from the vanishing plane 2c of the pallet on the impulse plane but which, against all odds, ensures a sufficient and continuous lubrication of the friction surfaces of the pallets, in particular of the rest plane 2b during the different phases of the func exhaust system. This lubrication is of course ensured until the lubricant reserve formed by the lubricant drop 12 disposed on the leakage plane 2c and the lubricant contained in the channel 8 has completely been exhausted, despite the fact that the outlet orifice 8b of the channel 8 does not lead to the rest plane 2b of the pallet 2.

On notera que lors du montage du mécanisme d'échappement, on devra veiller à ce que la roue d'échappement soit ajustée par rapport aux palettes pour que, lors de la rotation de la roue, les dents passent en regard du canal 8 pour prélever le lubrifiant nécessaire à l'alimentation du circuit de lubrifiant. A ce propos, et notamment pour éviter que les dents pénètrent dans l'orifice de sortie 8b lors de leur passage sur le plan d'impulsion 2a, on notera également que l'épaisseur des dents sera supérieure au diamètre de l'orifice de sortie 8b du canal. Typiquement cette épaisseur sera deux fois supérieure au diamètre de l'orifice de sortie.Note that when mounting the exhaust mechanism, we must ensure that the escape wheel is adjusted relative to the pallets so that, during the rotation of the wheel, the teeth pass next to the channel 8 to collect the lubricant needed to supply the lubricant circuit. In this regard, and especially to prevent the teeth from entering the outlet orifice 8b during their passage on the pulse plane 2a, it will also be noted that the thickness of the teeth will be greater than the diameter of the outlet orifice. 8b of the canal. Typically this thickness will be twice the diameter of the outlet orifice.

Bien que la présente invention ait été décrite en relation avec des exemples de réalisation particuliers, il est clair, cependant, qu'elle n'est pas limitée audits exemples et qu'elle est susceptible de nombreuses variantes et modifications sans sortir de son cadre défini par les revendications annexées. Par exemple, on peut prévoir selon une variante de l'invention, deux ou plusieurs canaux capillaires parallèles s'étendant entre le plan de repos et le plan d'impulsion.Although the present invention has been described in connection with particular embodiments, it is clear, however, that it is not limited to examples and that it is capable of many variations and modifications without departing from its defined scope. by the appended claims. For example, it is possible according to a variant of the invention to provide two or more parallel capillary channels extending between the rest plane and the pulse plane.

On notera également que l'invention est bien entendu applicable à tout genre d'échappement comportant des palettes, que ces palettes soient rapportées ou d'une seule pièce avec la pièce jouant le rôle de l'ancre.Note also that the invention is of course applicable to any type of exhaust with pallets, that these pallets are reported or in one piece with the part playing the role of the anchor.

Claims (7)

Palette d'ancre destinée à coopérer avec les dents d'une roue d'échappement d'un mouvement d'horlogerie, ladite palette comprenant un plan de fuite et un plan d'impulsion et au moins un canal capillaire servant de réservoir pour un lubrifiant, caractérisée en ce que ledit canal capillaire relie ledit plan de fuite audit plan d'impulsion .Anchor pallet intended to cooperate with the teeth of an escape wheel of a clockwork movement, said pallet comprising a leakage plane and a pulse plane and at least one capillary channel serving as a reservoir for a lubricant characterized in that said capillary channel connects said leakage plane to said impulse plane. Palette d'ancre selon la revendication 1, caractérisée en ce que le canal débouche dans le premier tiers du plan d'impulsion en partant de l'arête de sortie du plan d'impulsion.Anchor pallet according to claim 1, characterized in that the channel opens into the first third of the pulse plane from the output edge of the pulse plane. Palette d'ancre selon la revendication 1 ou 2, caractérisée en ce que la section du canal présente un profil variable sur toute sa longueur.Anchor pallet according to claim 1 or 2, characterized in that the section of the channel has a variable profile over its entire length. Palette d'ancre selon la revendication 3, caractérisée en ce que le canal est tronconique et converge en direction du plan d'impulsion.Anchor pallet according to claim 3, characterized in that the channel is frustoconical and converges in the direction of the pulse plane. Palette d'ancre selon la revendication 4, caractérisée en ce que la conicité du canal est comprise entre 3 et 10° et de préférence de l'ordre de 6°.Anchor pallet according to claim 4, characterized in that the conicity of the channel is between 3 and 10 ° and preferably of the order of 6 °. Palette d'ancre selon l'une quelconques des revendications précédentes, caractérisée en ce que la dimension du canal à l'endroit où le canal débouche sur le plan d'impulsion est inférieure à l'épaisseur des dents de la roue d'échappement.Anchor pallet according to any one of the preceding claims, characterized in that the dimension of the channel at the point where the channel opens on the pulse plane is less than the thickness of the teeth of the escape wheel. Palette d'ancre selon l'une quelconque des revendications précédentes, caractérisée en ce que le diamètre moyen du canal est de l'ordre de 3/100 mmAnchor pallet according to any one of the preceding claims, characterized in that the average diameter of the channel is of the order of 3/100 mm
EP04022204A 2004-09-17 2004-09-17 Anchor pallet for a watch movement Withdrawn EP1637938A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP04022204A EP1637938A1 (en) 2004-09-17 2004-09-17 Anchor pallet for a watch movement
DE602005027643T DE602005027643D1 (en) 2004-09-17 2005-09-02 Anchor lever for clockwork
EP20050019154 EP1637939B1 (en) 2004-09-17 2005-09-02 Anchor pallet for a watch movement
JP2005260337A JP4669354B2 (en) 2004-09-17 2005-09-08 Claw of ankle for clock movement
CN2005101034773A CN1749886B (en) 2004-09-17 2005-09-15 Anchor pallet for a watch movement
US11/227,294 US7338200B2 (en) 2004-09-17 2005-09-16 Pallet-stones for a clockwork movement
HK06105287.5A HK1085279A1 (en) 2004-09-17 2006-05-04 Pallet-stone for watch movement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04022204A EP1637938A1 (en) 2004-09-17 2004-09-17 Anchor pallet for a watch movement

Publications (1)

Publication Number Publication Date
EP1637938A1 true EP1637938A1 (en) 2006-03-22

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Application Number Title Priority Date Filing Date
EP04022204A Withdrawn EP1637938A1 (en) 2004-09-17 2004-09-17 Anchor pallet for a watch movement

Country Status (6)

Country Link
US (1) US7338200B2 (en)
EP (1) EP1637938A1 (en)
JP (1) JP4669354B2 (en)
CN (1) CN1749886B (en)
DE (1) DE602005027643D1 (en)
HK (1) HK1085279A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3067757A1 (en) * 2015-03-13 2016-09-14 The Swatch Group Research and Development Ltd. Microstructured tribological tank
US11520290B2 (en) * 2018-03-29 2022-12-06 Rolex Sa Wheel for horology movement

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH116857A (en) * 1926-05-14 1926-10-01 Otto Ahrens Lever escapement for timepieces.
US2685165A (en) * 1953-08-18 1954-08-03 Vesta S A Anchor pallet for clockworks
CH321946A (en) * 1954-01-28 1957-05-31 Foerderung Forschung Gmbh Anchor lifting stone for movements with an anchor and gear wheel
CH685463GA3 (en) * 1993-09-28 1995-07-31 Hormec Technic Sa Cramp or anchor for jewels of watch movement

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH444050A (en) * 1965-09-13 1967-05-13 Kruse Herbert Anchor escapement for watch movement
JPS49102379A (en) * 1973-01-31 1974-09-27
CH690013A5 (en) * 1995-10-06 2000-03-15 Laesser Alain Anchor palette for a watch movement and fabrication method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH116857A (en) * 1926-05-14 1926-10-01 Otto Ahrens Lever escapement for timepieces.
US2685165A (en) * 1953-08-18 1954-08-03 Vesta S A Anchor pallet for clockworks
CH321946A (en) * 1954-01-28 1957-05-31 Foerderung Forschung Gmbh Anchor lifting stone for movements with an anchor and gear wheel
CH685463GA3 (en) * 1993-09-28 1995-07-31 Hormec Technic Sa Cramp or anchor for jewels of watch movement

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3067757A1 (en) * 2015-03-13 2016-09-14 The Swatch Group Research and Development Ltd. Microstructured tribological tank
WO2016146305A1 (en) * 2015-03-13 2016-09-22 The Swatch Group Research And Development Ltd Tribological microstructured receptacle
US11520290B2 (en) * 2018-03-29 2022-12-06 Rolex Sa Wheel for horology movement

Also Published As

Publication number Publication date
CN1749886A (en) 2006-03-22
US20060062087A1 (en) 2006-03-23
CN1749886B (en) 2010-05-05
HK1085279A1 (en) 2006-08-18
US7338200B2 (en) 2008-03-04
JP2006084466A (en) 2006-03-30
JP4669354B2 (en) 2011-04-13
DE602005027643D1 (en) 2011-06-09

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