EP3754433A1 - Assembly for anchor escapement of timepiece movement - Google Patents
Assembly for anchor escapement of timepiece movement Download PDFInfo
- Publication number
- EP3754433A1 EP3754433A1 EP20180912.6A EP20180912A EP3754433A1 EP 3754433 A1 EP3754433 A1 EP 3754433A1 EP 20180912 A EP20180912 A EP 20180912A EP 3754433 A1 EP3754433 A1 EP 3754433A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- anchor
- plate
- wall
- pin
- 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.)
- Pending
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Classifications
-
- 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 an assembly for an anchor escapement, comprising an anchor, a plate and a pin integral with the plate, intended to cooperate with each other and with an escape wheel, in a service position, while presenting a safety against overturning,
- the anchor being devoid of stinger and comprising, on the one hand, an inlet pallet and an outlet pallet, intended to cooperate alternately with the escape wheel and, on the other hand, a fork intended to cooperate with the pin and the plate and comprising first and second horns delimiting a fork entry
- the plate being at least partially located at the same level as the pin, depending on the direction of the thickness of the plate, the plate having an anti-overturning wall of generally cylindrical shape in which a notch is formed, in a region adjacent to the ankle, the anchor, the plate and the ankle being shaped and dimensioned such so that, in the service position, the anti-overturning wall is capable of defining a stop for the first and second horns.
- escapements of this type have not established themselves on the market and traditional Swiss lever escapements, including a stinger, are by far the most widespread, and have been for several tens of years. years.
- a main aim of the present invention is to provide an assembly allowing the production of an escapement with safe operation and having a reduced size with reference to conventional exhausts.
- the present invention relates more particularly to an assembly of the type indicated above, characterized in that the anchor, the plate and the peg are further shaped and dimensioned such that, in the service position, each horns is capable of penetrating inside the notch exclusively when the ankle is at least partially located in the entrance of the fork.
- the only configuration of the assembly according to the invention in which a horn can enter the notch of the plate, during operation, is that in which this horn must precisely enter the notch to allow the normal pivoting of the fork on either side of neutral. An exhaust of reduced thickness is thus obtained, the operation of which is completely safe.
- each of the horns of the fork has an internal wall delimiting the entrance to the fork and an external wall shaped and dimensioned such that in a rebat situation, the distance between the point of contact of the ankle on the outer wall of the horn concerned and the end of the outer wall closest to the inner wall is greater than the distance between the ankle and that of the junctions between the anti-overturning wall and the notch which is closest to the horn concerned.
- each horn has a shape and dimensioning such that it cannot enter the notch of the plate in a rebat situation but can only enter it when the peg is at least partially located in the fork. .
- the anchor comprising a rod connecting the input and output pallets to the fork and capable of pivoting between two extreme positions, in the service position, by defining a maximum displacement angle of the fork.
- anchor provision can advantageously be made for the outer wall of each of the horns to have, from its end closest to the inner wall, a first portion defining a safety surface and having an average angle, with reference to the rod such as the surface safety device is substantially tangent to the anti-overturning wall when it is situated opposite the latter, then a second portion having an angle of the order of 0 to 60 ° with reference to the rod, preferably less than 45 ° , for example 30 °, and extending at least to the point of contact of the ankle on the external wall in a rebat situation.
- the present invention also relates to an escapement comprising an assembly meeting the characteristics set out above associated with an escape wheel.
- this escapement can be intended to be arranged, in the service position, such that the distance between the axes of rotation of the anchor and of the plate is at least equal to twice that of the distance between the axes of rotation of the anchor and the escape wheel.
- the escapement prefferably, provision can be made for the escapement to be intended to be arranged, in the service position, such that the axes of rotation of the escape wheel, anchor and plate are coplanar.
- the present invention also relates to a horological movement comprising an escapement meeting the above characteristics, and possibly comprising limiting pins arranged on either side of the anchor to define its maximum travel, as well as a timepiece. provided with such a watch movement.
- the figures 1a, 1b and 2a, 2b represent simplified views, on the one hand from above and, on the other hand, partial and side views of a range for horological movement, respectively, of conventional Swiss anchor type and according to a preferred embodiment of the present invention.
- a comparative examination of these different views makes it possible to highlight the structural characteristics which differentiate the set of components according to the present invention from a set of components according to the state of the art which is the most widespread on the market.
- the Swiss lever escapement 100 illustrated on figures 1a and 2a comprises an escape wheel 102 integral with an escape pinion 104 and arranged to cooperate with the input 106 and output 108 vanes of an anchor 110, intended to be pivoted on its axis 112.
- a rod 114 connects the pallets 106, 108 to a fork whose entrance is delimited by two horns 116.
- the fork is surmounted by a stinger 118 intended to ensure safety against overturning.
- Input 120 and output 122 limiting pins are typically provided to limit the amplitude of rotation of anchor 110.
- the anchor is intended to cooperate with a double plate, in particular to retransmit part of the energy received. from the escape wheel to the balance (not visible) to maintain the oscillations.
- the double plate comprises, for this purpose, a small plate 124 whose cylindrical periphery defines an anti-overturning wall by its cooperation with the dart 118, this wall being provided with a notch 126 intended to allow the rotation of the anchor 110 on either side of the neutral point, leaving sufficient space to define a passage for the dart 118.
- the small plate 124 is generally secured to a large plate 128 by means of a barrel 130, the large plate 128 carrying a pin 132 intended to cooperate with the fork of the anchor 110 in order, on the one hand, to trigger a rotation of the anchor 110 at each alternation by exerting an adequate force on a first horn 116 and, on the other hand , receive a pulse from the other of the horns 116 before coming out of the fork.
- FIG. 1 An exhaust 1 according to a preferred embodiment of the invention is illustrated on figures 1b and 2b , by way of nonlimiting example, of which it appears that this exhaust comprises an escape wheel 2 integral with an exhaust pinion 4 and arranged to cooperate with the inlet 6 and outlet 8 vanes of an anchor 10, intended to be pivoted on its axis 12.
- a rod 14 connects the pallets 6, 8 to a fork, the entrance of which is delimited by two horns 16, 18.
- the horns 16, 18, in addition to their conventional function, are intended here to provide a safety against overturning.
- Input 20 and output 22 limiting pins are typically provided to limit the amplitude of rotation of anchor 10.
- the anchor 10 is intended to cooperate with a plate 24 of reduced thickness with reference to the conventional double plate.
- the plate 24 has a cylindrical periphery defining an anti-overturning wall by its cooperation with the horns 16 and 18, this wall being provided with a notch 26 intended to allow the rotation of the anchor 10 on either side of the point dead, leaving sufficient space to define a passage for the horns 16, 18.
- the plate 24 carries a small radial protuberance 28 defining a support for an ankle 32 intended to cooperate with the fork of the anchor 10, as will emerge more clearly from the explanations which will follow, in relation to the description of figures 3a to 3n .
- the anchor 10 is devoid of stinger makes it possible to reduce its thickness as well as that of the plate, as emerges from a comparative examination of the figures 2a and 2b .
- the figure 3a represents the assembly for escapement while the balance (not visible) is in the phase of additional descending angle, the anchor 10 and the escape wheel being at rest.
- the rod 14 of the anchor 10 bears against the output limiting pin 22 and the outlet pallet 8 of the anchor 10 bears against a tooth of the escape wheel 2.
- the figure 3b shows a configuration in which the peg 32 of the plate 24 is about to enter the fork while it is still located opposite the horn 18.
- the horn 16 is partially located opposite the notch 26 of the plate 24 but it still remains close to the anti-overturning wall and thereby maintains the safety against the overturning of the anchor 10.
- the figures 3c and 3d represent the release phase during which the pin 32 comes into contact with the horn 16 and acts on it to rotate the anchor 10 which then leaves its stop position. At the same time, the anchor 10 begins to undergo an impulse from the escape wheel 2, in a conventional manner.
- the pulse phase continues until the configuration of the figure 3g , passing through neutral, illustrated on figure 3e , the anchor 10 transmitting to the balance a fraction of the energy received from the escape wheel 2, by the intermediary of the pin 32 of the plate 24 between the neutral point and the end of the impulse phase shown on the figure 3g .
- the anchor 10 is blocked against the entry limiting pin 20 by the pull exerted by the escape wheel 2 on the entry pallet 6.
- the figure 3j represents the configuration corresponding to the end of the following additional descending angle phase, once the pin 32 has already entered the entry of the fork and when it comes into contact with the horn 18 to begin the release phase next, in the opposite direction.
- the pin 32 being located in the entrance of the fork, the notch 26 of the plate is positioned opposite the horn 18 to allow the pivoting of the anchor 10 in the anti-clockwise direction in the view of the figure 3j .
- the figures 3k, 3l and 3m represent respectively the continuation of the release phase, the passage through the neutral point, then the next impulse phase.
- FIG 3n illustrates the start of the next additional upward angle phase, with the next additional downward angle phase corresponding again to the illustration in figure 3a .
- the configuration shown on figure 3n corresponds to the moment when the pin 32 has just left the fork and it can be seen that the horn 16 is then again located in the immediate vicinity of the anti-overturning wall of the plate 24.
- the figures 4a, 4b and 4c present three different types of escapements in a rebate situation and their comparative examination makes it possible to highlight certain features of the present invention.
- the figure 4a illustrates the rebate situation for the front escapement as described in the patent CH44855 cited above, and allows to see the limits of this exhaust in terms of operating safety.
- this escapement presented a high risk of blocking in the event of rebat insofar as the horn 216 of the fork, against which the pin 232 abuts in the rebat situation, is liable to penetrate the fork. 'inside the notch 226 of the plate 224 and to block the rotation of the plate 224 and therefore the operation of the corresponding watch movement.
- the figure 4b presents the rebat situation in the case of the conventional Swiss lever escapement, in which the lugs 116 and the dart 118 are shaped, with respect to the plate 124 and its notch 126, such that the lugs 116 cannot enter the notch 126 in a rebat situation, due to the stop position of the dart 118 against the anti-overturning wall of the plate 124.
- the fork of the anchor 10 has a shape substantially different from the typical shape of a conventional anchor fork, in order to optimize the nature of its interaction with the peripheral wall of the plate 24.
- each of the horns 16, 18 of the fork has an internal wall 36 delimiting the entrance to the fork and an external wall 38 shaped and dimensioned such that in a rebat situation, the distance between the point of contact of the fork. the pin 32 on the outer wall 38 of the horn concerned (the horn 16 in the configuration illustrated on the figure 4c ) and the end 40 of the outer wall 38 closest to the inner wall 36 is greater than the distance between the pin 32 and that of the junctions 42 between the anti-overturning wall and the notch 26 which is closest to the horn concerned. Thanks to such a geometric arrangement, the horns 16, 18 cannot enter the notch 26 in a rebat situation, as was the case with the prior art mentioned above, which is clear from a comparative examination. illustrations of figures 4a and 4c .
- each of the horns 16, 18 has, from its end 40 closest to the inner wall 36, a first portion 38a defining a safety surface and having an average angle, in reference to the rod 14 of the anchor 10, such that the safety surface is substantially tangent to the anti-overturning wall when it is located opposite the latter (that is to say essentially when the anchor 10 is in the rest phase), then a second portion 38b having an angle of the order of 0 to 60 ° with reference to the rod 14, preferably less than 45 °, for example 30 °, and extending at least up to 'at the point of contact of the ankle 32 on the outer wall 38 in the rebat situation.
- the first portion 38a capable of coming into contact with the anti-overturning wall of the plate 24 offers a contact surface with the latter inducing limited friction.
- this geometry defines horns of greater width than that of the horns of the prior art, and therefore less fragile and less likely to be damaged in the event of an impact.
- the orientation of the second portion 38b makes it possible to further increase the width of the horns 16, 18 not only to make them more solid but also to ensure that the geometric condition stated above, in relation to the rebat situation, is fully met , that is to say that the distance between the point of contact of the ankle 32 on a horn in rebat situation and the end 40 of the outer wall 38 of this horn is much greater than the distance between the ankle 32 and the junction 42 closest to the relevant horn.
- the assembly according to the present invention offers a level of safety equivalent to that of the assembly for escapements of the Swiss lever type, while having a reduced thickness with reference to the latter.
- the release and impulse functions performed by the internal wall 36 of the fork are located at the same level as the anti-overturning function performed by the external wall 38 of the fork whereas these functions are performed at different levels. in a traditional lever escapement with dart.
- FIG. 4b A comparative examination of figures 4b and 4c furthermore enables an additional advantage of the present invention to be observed with reference to a conventional Swiss lever escapement. It appears on the figure 4b that the elongation of the balance at the time of rebat is of the order of 330 to 340 degrees (360 ° - ⁇ on the figure 4b ) while it may be greater than 360 degrees in the case of the invention, as illustrated in figure 4c , from which it emerges that the elongation is here 360 ° + ⁇ ( ⁇ typically exhibiting a value of the order of a few degrees), which is more favorable from the point of view of the isochronism of the corresponding oscillator.
- the ankle can be made integral with the plate by any suitable means.
- the demand EP 2924517 which describes such a configuration. Provision can also be made for the ankle to be carried directly by the balance, for example, without departing from the scope of the invention.
- the axes of rotation of the escape wheel, of the anchor and of the plate may or may not be coplanar without impacting the implementation of the invention.
- the figure 5 shows a schematic top view of a plurality of anchors according to different respective embodiments of the present invention, and provides an overview of the flexibility available to those skilled in the art to design an anchor meeting the characteristics of the invention. 'invention.
Abstract
La présente invention concerne un échappement (1) comportant u ne ancre (10), un plateau (24) et une cheville (32) solidaire du plateau (24), destinés à coopérer les uns avec les autres, l'ancre (10) étant dépourvue de dard et comportant une fourchette destinée à coopérer avec la cheville (32) et le plateau (24) et comprenant des première et deuxième corn es (16, 18) déli mitant une entrée de fourchette, le plateau (24) présentant une paroi anti-renversement dans laquelle une encoche (26) est ménagée, dan s une région ad jacente à la cheville (32), l'ancre (10), le plateau (24) et la cheville (32) étant conformés et dimensionnés de telle manière que, dans la pos ition de service, la paroi anti-renversement soit susceptible de définir une butée pour les première et deuxième cornes (16, 18), et chacune des cornes (16, 18) soit sus ceptible de pénétrer à l'intérieur de l'encoche (26) exclusivement lorsque la cheville (32) est au moins partiellement située dans l'entrée de la fourchette.The present invention relates to an escapement (1) comprising an anchor (10), a plate (24) and a pin (32) integral with the plate (24), intended to cooperate with each other, the anchor (10) being devoid of sting and comprising a fork intended to cooperate with the peg (32) and the plate (24) and comprising first and second corners (16, 18) delimiting a fork entry, the plate (24) having a anti-overturning wall in which a notch (26) is formed, in a region adjacent to the ankle (32), the anchor (10), the plate (24) and the ankle (32) being shaped and sized to such that, in the service pos ition, the anti-overturning wall is capable of defining a stop for the first and second horns (16, 18), and each of the horns (16, 18) is capable of penetrating into the 'inside the notch (26) exclusively when the peg (32) is at least partially located in the entrance of the fork.
Description
La présente invention concerne un ensemble, pour échappement à ancre, comportant une ancre, un plateau et une cheville solidaire du plateau, destinés à coopérer les uns avec les autres et avec une roue d'échappement, dans une position de service, tout en présentant une sécurité contre le renversement, l'ancre étant dépourvue de dard et comportant, d'une part, une palette d'entrée et une palette de sortie, destinées à coopérer en alternance avec la roue d'échappement et, d'autre part, une fourchette destinée à coopérer avec la cheville et le plateau et comprenant des première et deuxième cornes délimitant une entrée de fourchette, le plateau étant au moins partiellement situé au même niveau que la cheville, suivant la direction de l'épaisseur du plateau, le plateau présentant une paroi anti-renversement de forme générale cylindrique dans laquelle une encoche est ménagée, dans une région adjacente à la cheville, l'ancre, le plateau et la cheville étant conformés et dimensionnés de telle manière que, dans la position de service, la paroi anti-renversement soit susceptible de définir une butée pour les première et deuxième cornes.The present invention relates to an assembly for an anchor escapement, comprising an anchor, a plate and a pin integral with the plate, intended to cooperate with each other and with an escape wheel, in a service position, while presenting a safety against overturning, the anchor being devoid of stinger and comprising, on the one hand, an inlet pallet and an outlet pallet, intended to cooperate alternately with the escape wheel and, on the other hand, a fork intended to cooperate with the pin and the plate and comprising first and second horns delimiting a fork entry, the plate being at least partially located at the same level as the pin, depending on the direction of the thickness of the plate, the plate having an anti-overturning wall of generally cylindrical shape in which a notch is formed, in a region adjacent to the ankle, the anchor, the plate and the ankle being shaped and dimensioned such so that, in the service position, the anti-overturning wall is capable of defining a stop for the first and second horns.
Un échappement comprenant un ensemble répondant aux caractéristiques ci-dessus a déjà été divulgué dans l'art antérieur, il y a bien longtemps.An escapement comprising an assembly meeting the above characteristics has already been disclosed in the prior art, a long time ago.
En effet, le brevet
Malgré un tel avantage en termes d'encombrement, les échappements de ce type ne se sont pas imposés sur le marché et les échappements traditionnels à ancre suisse, comprenant un dard, sont de loin les plus répandus, et ce, depuis plusieurs dizaines d'années.Despite such an advantage in terms of size, escapements of this type have not established themselves on the market and traditional Swiss lever escapements, including a stinger, are by far the most widespread, and have been for several tens of years. years.
La Demanderesse a conduit des études poussées en matière de géométries d'échappements et a pu mettre en évidence un inconvénient de l'échappement mentionné ci-dessus. En effet, l'échappement tel qu'il est décrit dans le brevet suisse précédemment cité présente un risque de dysfonctionnement en cas de rebat étant donné que la corne contre laquelle la cheville de plateau bute dans cette situation est susceptible de pénétrer dans l'encoche du plateau lorsque le balancier change de sens de rotation. Il y a alors un risque d'arrêt brutal de l'échappement et donc du mouvement horloger correspondant, voire un risque d'endommagement de l'ancre.The Applicant has carried out extensive studies in the field of escapement geometries and has been able to highlight a drawback of the exhaust mentioned above. Indeed, the escapement as described in the aforementioned Swiss patent presents a risk of malfunction in the event of rebat given that the horn against which the plate pin abuts in this situation is liable to enter the notch. of the plate when the balance changes direction of rotation. There is then a risk of sudden stopping of the escapement and therefore of the corresponding watch movement, or even a risk of damage to the anchor.
Un but principal de la présente invention est de proposer un ensemble permettant la réalisation d'un échappement au fonctionnement sûr et présentant un encombrement réduit en référence aux échappements conventionnels.A main aim of the present invention is to provide an assembly allowing the production of an escapement with safe operation and having a reduced size with reference to conventional exhausts.
A cet effet, la présente invention concerne plus particulièrement un ensemble du type indiqué plus haut, caractérisé par le fait que l'ancre, le plateau et la cheville sont en outre conformés et dimensionnés de telle manière que, dans la position de service, chacune des cornes soit susceptible de pénétrer à l'intérieur de l'encoche exclusivement lorsque la cheville est au moins partiellement située dans l'entrée de la fourchette.To this end, the present invention relates more particularly to an assembly of the type indicated above, characterized in that the anchor, the plate and the peg are further shaped and dimensioned such that, in the service position, each horns is capable of penetrating inside the notch exclusively when the ankle is at least partially located in the entrance of the fork.
Grâce à ces caractéristiques, la seule configuration de l'ensemble selon l'invention dans laquelle une corne peut pénétrer dans l'encoche du plateau, en cours de fonctionnement, est celle dans laquelle cette corne doit justement entrer dans l'encoche pour permettre le pivotement normal de la fourchette de part et d'autre du point mort. On obtient ainsi un échappement d'épaisseur réduite dont le fonctionnement est totalement sécurisé.Thanks to these characteristics, the only configuration of the assembly according to the invention in which a horn can enter the notch of the plate, during operation, is that in which this horn must precisely enter the notch to allow the normal pivoting of the fork on either side of neutral. An exhaust of reduced thickness is thus obtained, the operation of which is completely safe.
De manière préférée, chacune des cornes de la fourchette présente une paroi interne délimitant l'entrée de la fourchette et une paroi externe conformée et dimensionnée de telle manière qu'en situation de rebat, la distance entre le point de contact de la cheville sur la paroi externe de la corne concernée et l'extrémité de la paroi externe la plus proche de la paroi interne soit supérieure à la distance entre la cheville et celle des jonctions entre la paroi anti-renversement et l'encoche qui est la plus proche de la corne concernée.Preferably, each of the horns of the fork has an internal wall delimiting the entrance to the fork and an external wall shaped and dimensioned such that in a rebat situation, the distance between the point of contact of the ankle on the outer wall of the horn concerned and the end of the outer wall closest to the inner wall is greater than the distance between the ankle and that of the junctions between the anti-overturning wall and the notch which is closest to the horn concerned.
Grâce à ces caractéristiques géométriques spécifiques, chaque corne présente une forme et un dimensionnement tels qu'elle ne peut pas entrer dans l'encoche du plateau en situation de rebat mais ne peut y pénétrer que lorsque la cheville est au moins partiellement située dans la fourchette.Thanks to these specific geometric characteristics, each horn has a shape and dimensioning such that it cannot enter the notch of the plate in a rebat situation but can only enter it when the peg is at least partially located in the fork. .
Selon un mode de réalisation préféré, l'ancre comportant une baguette reliant les palettes d'entrée et de sortie à la fourchette et susceptible de pivoter entre deux positions extrêmes, dans la position de service, en définissant un angle de débattement maximal de l'ancre, on peut avantageusement prévoir que la paroi externe de chacune des cornes présente, depuis son extrémité la plus proche de la paroi interne, une première portion définissant une surface de sécurité et présentant un angle moyen, en référence à la baguette tel que la surface de sécurité soit sensiblement tangente à la paroi anti-renversement lorsqu'elle est située en regard de cette dernière, puis une deuxième portion présentant un angle de l'ordre de 0 à 60° en référence à la baguette, de préférence inférieur à 45°, par exemple 30°, et s'étendant au moins jusqu'au point de contact de la cheville sur la paroi externe en situation de rebat.According to a preferred embodiment, the anchor comprising a rod connecting the input and output pallets to the fork and capable of pivoting between two extreme positions, in the service position, by defining a maximum displacement angle of the fork. anchor, provision can advantageously be made for the outer wall of each of the horns to have, from its end closest to the inner wall, a first portion defining a safety surface and having an average angle, with reference to the rod such as the surface safety device is substantially tangent to the anti-overturning wall when it is situated opposite the latter, then a second portion having an angle of the order of 0 to 60 ° with reference to the rod, preferably less than 45 ° , for example 30 °, and extending at least to the point of contact of the ankle on the external wall in a rebat situation.
Dans une variante de réalisation particulière, on peut prévoir que la cheville soit rendue solidaire du plateau par l'intermédiaire d'un support réalisé d'une pièce avec le plateau.In a particular variant embodiment, provision can be made for the peg to be made integral with the plate by means of a support produced in one piece with the plate.
En complément ou en alternative, on peut prévoir que la cheville soit portée directement par le balancier.In addition or as an alternative, provision can be made for the ankle to be carried directly by the balance.
De manière générale, la présente invention concerne également un échappement comprenant un ensemble répondant aux caractéristiques énoncées ci-dessus associé à une roue d'échappement.In general, the present invention also relates to an escapement comprising an assembly meeting the characteristics set out above associated with an escape wheel.
Selon un mode de réalisation préféré, on peut prévoir que cet échappement soit destiné à être agencé, dans la position de service, de telle manière que la distance entre les axes de rotation de l'ancre et du plateau soit au moins égale au double de la distance entre les axes de rotation de l'ancre et de la roue d'échappement.According to a preferred embodiment, provision can be made for this escapement to be intended to be arranged, in the service position, such that the distance between the axes of rotation of the anchor and of the plate is at least equal to twice that of the distance between the axes of rotation of the anchor and the escape wheel.
De manière préférée, on peut prévoir que l'échappement soit destiné à être agencé, dans la position de service, de telle manière que les axes de rotation de la roue d'échappement, de l'ancre et du plateau soient coplanaires.Preferably, provision can be made for the escapement to be intended to be arranged, in the service position, such that the axes of rotation of the escape wheel, anchor and plate are coplanar.
La présente invention concerne également un mouvement horloger comportant un échappement répondant aux caractéristiques ci-dessus, et comprenant éventuellement des goupilles de limitation agencées de part et d'autre de l'ancre pour définir son débattement maximal, ainsi qu'une pièce d'horlogerie pourvue d'un tel mouvement horloger.The present invention also relates to a horological movement comprising an escapement meeting the above characteristics, and possibly comprising limiting pins arranged on either side of the anchor to define its maximum travel, as well as a timepiece. provided with such a watch movement.
D'autres caractéristiques et avantages de la présente invention apparaîtront plus clairement à la lecture de la description détaillée d'un mode de réalisation préféré qui suit, faite en référence aux dessins annexés donnés à titre d'exemple non limitatif et dans lesquels:
- les
figures 1a et 1b représentent une même vue de dessus simplifiée d'un assortiment pour mouvement horloger, respectivement, de type à ancre suisse conventionnel et selon un mode de réalisation préféré de la présente invention; - les
figures 2a et 2b représentent une même vue de côté simplifiée d'une partie des assortiments respectifs desfigures 1a et 1b ; - les
figures 3a à 3n représentent une même vue de dessus simplifiée d'une partie de l'assortiment selon le mode de réalisation préféré de la présente invention tel qu'illustré sur lafigure 1b , dans différentes configurations successives; - les
figures 4a, 4b et 4c représentent une même vue de dessus simplifiée d'une partie d'un assortiment pour mouvement horloger en situation de rebat, respectivement selon une première construction de l'art antérieur, selon une deuxième construction de l'art antérieur et selon le mode de réalisation préféré de l'invention tel qu'illustré sur lafigure 1b , et - la
figure 5 représente une vue de dessus schématique d'une pluralité d'ancres selon différentes variantes de réalisation respectives de la présente invention.
- the
figures 1a and 1b show the same simplified top view of an assortment for a watch movement, respectively, of the conventional Swiss lever type and according to a preferred embodiment of the present invention; - the
figures 2a and 2b represent the same simplified side view of part of the respective assortments offigures 1a and 1b ; - the
figures 3a to 3n show the same simplified top view of part of the set according to the preferred embodiment of the present invention as illustrated onfigure 1b , in different successive configurations; - the
figures 4a, 4b and 4c show the same simplified top view of part of an assortment for a watch movement in a rebate situation, respectively according to a first construction of the prior art, according to a second construction of the prior art and according to the preferred embodiment of the invention as illustrated onfigure 1b , and - the
figure 5 shows a schematic top view of a plurality of anchors according to different respective embodiments of the present invention.
Les
De manière connue, l'échappement à ancre suisse 100 illustré sur les
L'illustration de la
Un échappement 1 selon un mode de réalisation préféré de l'invention est illustré sur les
L'ancre 10 est destinée à coopérer avec un plateau 24 d'épaisseur réduite en référence au double plateau conventionnel. Le plateau 24 présente une périphérie cylindrique définissant une paroi anti-renversement par sa coopération avec les cornes 16 et 18, cette paroi étant munie d'une encoche 26 destinée à permettre la rotation de l'ancre 10 de part et d'autre du point mort, en ménageant une place suffisante pour définir un passage pour les cornes 16, 18. Le plateau 24 porte une petite excroissance radiale 28 définissant un support pour une cheville 32 destinée à coopérer avec la fourchette de l'ancre 10, comme cela ressortira plus clairement des explications qui vont suivre, en relation avec la description des
Ainsi, le fait que l'ancre 10 soit dépourvue de dard permet de réduire son épaisseur ainsi que celle du plateau comme cela ressort d'un examen comparé des
Toutefois, il convient de relever dans le même temps que les cornes 16, 18 remplacent le dard dans sa fonction anti-renversement et qu'elles présentent une largeur supérieure à la largeur typique du dard. Ainsi, l'encoche 26 du plateau 24 doit être agrandie en référence aux échappements conventionnels et le plateau 24 lui-même doit également être agrandi de ce fait. Ces modifications impliquent un allongement de la baguette 14 d'ancre dans le cas où la roue d'échappement 2 est inchangée en référence à un échappement à ancre suisse conventionnel, comme cela ressort tout particulièrement d'un examen comparé des
Le fonctionnement de l'échappement 1 selon ce mode de réalisation préféré de l'invention va à présent être décrit en relation avec les
La
On peut d'ores et déjà noter à ce stade que si le mouvement horloger correspondant devait subir un choc, dans cette configuration, tel que la roue d'échappement libèrerait l'ancre 10, cette dernière ne pourrait pas pivoter dans la mesure où la corne 16 est agencée immédiatement à proximité de la paroi du plateau 24, celle-ci remplissant ainsi le rôle d'une paroi anti-renversement.It can already be noted at this stage that if the corresponding watch movement were to undergo an impact, in this configuration, such that the escape wheel would release the
La
Les
La phase d'impulsion se poursuit jusqu'à la configuration de la
La cheville 32 sort alors de la fourchette, comme représenté sur la
La
Les
La
Les
La
La
Il ressort de la
En effet, chacune des cornes 16, 18 de la fourchette présente une paroi interne 36 délimitant l'entrée de la fourchette et une paroi externe 38 conformée et dimensionnée de telle manière qu'en situation de rebat, la distance entre le point de contact de la cheville 32 sur la paroi externe 38 de la corne concernée (la corne 16 dans la configuration illustrée sur la
En outre, la paroi externe 38 de chacune des cornes 16, 18 présente, depuis son extrémité 40 la plus proche de la paroi interne 36, une première portion 38a définissant une surface de sécurité et présentant un angle moyen, en référence à la baguette 14 de l'ancre 10, tel que la surface de sécurité soit sensiblement tangente à la paroi anti-renversement lorsqu'elle est située en regard de cette dernière (c'est-à-dire essentiellement lorsque l'ancre 10 est en phase de repos), puis une deuxième portion 38b présentant un angle de l'ordre de 0 à 60° en référence à la baguette 14, de préférence inférieur à 45°, par exemple 30°, et s'étendant au moins jusqu'au point de contact de la cheville 32 sur la paroi externe 38 en situation de rebat. Ainsi, la première portion 38a susceptible d'entrer en contact avec la paroi anti-renversement du plateau 24 offre une surface de contact avec cette dernière induisant des frottements limités. En outre, cette géométrie définit des cornes de largeur supérieure à celle des cornes de l'art antérieur, donc moins fragiles et moins susceptibles d'être endommagées en cas de choc. L'orientation de la deuxième portion 38b permet d'augmenter davantage la largeur des cornes 16, 18 non seulement pour les rendre plus solides mais également pour assurer que la condition géométrique énoncée plus haut, en relation avec la situation de rebat, soit bien remplie, c'est-à-dire que la distance entre le point de contact de la cheville 32 sur une corne en situation de rebat et l'extrémité 40 de la paroi externe 38 de cette corne soit bien supérieure à la distance entre la cheville 32 et la jonction 42 la plus proche de la corne concernée.In addition, the
Il apparait ainsi de la
Un examen comparé des
Grâce aux caractéristiques qui viennent d'être présentées, on peut réaliser un échappement conforme aux caractéristiques de l'invention d'épaisseur réduite en référence à un échappement à ancre suisse conventionnel mais présentant un niveau de sécurité au moins équivalent à celui de ce dernier.Thanks to the characteristics which have just been presented, it is possible to produce an escapement conforming to the characteristics of the invention of reduced thickness with reference to a conventional Swiss lever escapement but having a level of safety at least equivalent to that of the latter.
La description qui précède s'attache à décrire un mode de réalisation particulier à titre d'illustration non limitative et, l'invention n'est pas limitée à la mise en œuvre de certaines caractéristiques particulières qui viennent d'être décrites, comme par exemple la géométrie de l'ancre 10 ou la forme exacte de sa fourchette, voire la forme de la cheville de plateau ou de son support permettant de la rendre solidaire du plateau. En effet, la cheville peut être rendue solidaire du plateau par tout moyen adapté. On connait notamment la demande
Pour ce qui concerne plus particulièrement la géométrie de l'ancre 10, la
L'homme du métier ne rencontrera aucune difficulté particulière pour adapter le présent enseignement à la mise en œuvre d'un ensemble permettant la réalisation d'un échappement dans lequel l'ancre est dépourvue de dard mais sa fourchette est agencée de telle manière que ses cornes ne puissent entrer dans l'encoche de plateau que lorsque la cheville de ce dernier est située au moins partiellement à l'intérieur de la fourchette.Those skilled in the art will encounter no particular difficulty in adapting the present teaching to the implementation of an assembly allowing the production of an escapement in which the anchor has no stinger but its fork is arranged in such a way that its horns can only enter the notch of the tray when the pin of the latter is located at least partially inside the fork.
Claims (11)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH00832/19A CH716337A1 (en) | 2019-06-19 | 2019-06-19 | Set for anchor escapement of watch movement. |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3754433A1 true EP3754433A1 (en) | 2020-12-23 |
Family
ID=67551035
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20180912.6A Pending EP3754433A1 (en) | 2019-06-19 | 2020-06-18 | Assembly for anchor escapement of timepiece movement |
Country Status (5)
Country | Link |
---|---|
US (1) | US11550262B2 (en) |
EP (1) | EP3754433A1 (en) |
JP (1) | JP2021001880A (en) |
CN (1) | CN112114508B (en) |
CH (1) | CH716337A1 (en) |
Citations (7)
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CH2209A (en) * | 1890-04-30 | 1890-12-15 | Ludwig Marckwald | Free watch escapement with separate rest and impulse teeth |
CH44855A (en) | 1909-01-01 | 1909-09-16 | Edmond Debely | Simplified lever escapement for pendulum timepieces |
DE867671C (en) * | 1950-12-05 | 1953-02-19 | Ebauches Sa | Lever escapement |
CH567293B5 (en) * | 1972-07-19 | 1975-09-30 | Far Fab Assortiments Reunies | Anchor escapement for timepiece |
CH699273B1 (en) * | 2006-06-30 | 2010-02-15 | Patek Philippe Sa | Exhaust anchor. |
US20100208555A1 (en) * | 2009-02-17 | 2010-08-19 | Hiraoka Masashi | Escapement governor, mechanical watch, pallet fork (incomplete) manufacturing method, and roller manufacturing method |
EP2924517A1 (en) | 2014-03-24 | 2015-09-30 | Nivarox-FAR S.A. | One-piece composite pin - small plate part |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB574229A (en) * | 1943-11-13 | 1945-12-28 | Thomas Alfred Gummersall | A silent lever escapement |
GB679416A (en) * | 1950-06-22 | 1952-09-17 | Far Fab Assortiments Reunies | Lever escapement |
DE1244665B (en) * | 1962-11-03 | 1967-07-13 | United States Time Corp | Pointer mechanism drive |
CH510285A (en) * | 1969-10-22 | 1971-03-31 | Far Fab Assortiments Reunies | Anchor escapement for timepiece |
CH1020375A4 (en) * | 1975-08-05 | 1977-06-30 | ||
DE60314156T2 (en) * | 2003-12-04 | 2008-01-24 | Montres Breguet S.A. | Chronometer escapement for wristwatches |
EP2466395A1 (en) * | 2010-12-14 | 2012-06-20 | Chopard Technologies SA | Pallet and escapement equipped with said pallet |
CH706532B1 (en) * | 2012-11-26 | 2013-11-29 | Detra Sa Zi | Anchor escapement for a timepiece. |
EP2863273B1 (en) * | 2013-10-16 | 2016-01-13 | Montres Breguet SA | Escapement mechanism for watch movement |
EP3070537A1 (en) * | 2015-03-18 | 2016-09-21 | L. Leroy S.A. | Time base comprising an escapement with direct pulse and constant force |
-
2019
- 2019-06-19 CH CH00832/19A patent/CH716337A1/en unknown
-
2020
- 2020-06-17 JP JP2020104707A patent/JP2021001880A/en active Pending
- 2020-06-18 CN CN202010558070.4A patent/CN112114508B/en active Active
- 2020-06-18 EP EP20180912.6A patent/EP3754433A1/en active Pending
- 2020-06-19 US US16/906,294 patent/US11550262B2/en active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH2209A (en) * | 1890-04-30 | 1890-12-15 | Ludwig Marckwald | Free watch escapement with separate rest and impulse teeth |
CH44855A (en) | 1909-01-01 | 1909-09-16 | Edmond Debely | Simplified lever escapement for pendulum timepieces |
DE867671C (en) * | 1950-12-05 | 1953-02-19 | Ebauches Sa | Lever escapement |
CH567293B5 (en) * | 1972-07-19 | 1975-09-30 | Far Fab Assortiments Reunies | Anchor escapement for timepiece |
CH699273B1 (en) * | 2006-06-30 | 2010-02-15 | Patek Philippe Sa | Exhaust anchor. |
US20100208555A1 (en) * | 2009-02-17 | 2010-08-19 | Hiraoka Masashi | Escapement governor, mechanical watch, pallet fork (incomplete) manufacturing method, and roller manufacturing method |
EP2924517A1 (en) | 2014-03-24 | 2015-09-30 | Nivarox-FAR S.A. | One-piece composite pin - small plate part |
Also Published As
Publication number | Publication date |
---|---|
JP2021001880A (en) | 2021-01-07 |
US11550262B2 (en) | 2023-01-10 |
CN112114508B (en) | 2023-07-25 |
CH716337A1 (en) | 2020-12-30 |
CN112114508A (en) | 2020-12-22 |
US20200401083A1 (en) | 2020-12-24 |
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