EP2871535B1 - Timepiece pallet with optimised horns - Google Patents
Timepiece pallet with optimised horns Download PDFInfo
- Publication number
- EP2871535B1 EP2871535B1 EP13191770.0A EP13191770A EP2871535B1 EP 2871535 B1 EP2871535 B1 EP 2871535B1 EP 13191770 A EP13191770 A EP 13191770A EP 2871535 B1 EP2871535 B1 EP 2871535B1
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- EP
- European Patent Office
- Prior art keywords
- radius
- pin
- horn
- lever
- pallet lever
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- 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.)
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- 210000003423 ankle Anatomy 0.000 description 20
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Images
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
-
- 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 invention relates to an anchor for a clockwork escapement mechanism comprising a rocker equipped with an anchor of given radius and oscillating according to a given radius of gyration, said anchor comprising, on either side of an opening, a first horn and a second horn for cooperation with such an ankle, wherein said first and second horns have a profile symmetrical to each other with respect to a median plane passing through an anchor pivot axis, and comprise each a concave intrados profile according to a first cylindrical sector bordering said opening and first radius of curvature, said intrados profile being connected to a convex extrados profile according to a second cylindrical sector of second radius of curvature.
- the invention also relates to a rocker equipped with a peg of ankle radius given and oscillating according to a given radius of gyration about a pendulum pivot axis
- the invention also relates to an escapement mechanism comprising a rocker pivoting about a rocker pivot axis and equipped with an anchor of given radius according to a given radius of gyration, and such an anchor that includes said exhaust mechanism .
- the invention also relates to a mechanical clockwork movement comprising at least one such escape mechanism.
- the invention also relates to a watch comprising at least one such mechanical clockwork movement.
- the invention relates to the field of watch exhaust mechanisms.
- the functions of the escapement must be preserved whatever the shocks suffered by the watch.
- the exhaust must be robust and able to withstand axial and radial shocks in all positions of the watch. For that, mechanical elements, called safety of the exhaust, come to limit the running of rotating or oscillating elements, in order to avoid any critical position that could either disturb the march or stop the watch.
- these securities are provided by at least the horns and the sting.
- This system has proven its reliability and robustness, but requires however a distinct component, which increases the cost of production and the risk of non-quality.
- Spreading the horns and the stinger on two separate levels requires sufficient sharing, which has a significant impact on the height of the movement, and therefore on the final thickness of the watch.
- the document FR 206 876 in the name of MARCKWALD describes an anchor with two horns symmetrical with respect to a median plane each with a concave intrados profile and a convex extrados profile.
- the document CH704246A2 in the name of NIVAROX-FAR SA describes a micromechanical component, including a balance, comprising a body forming a flywheel, metal alloy or silicon-based material. A one-piece peg with this body protrudes from it. In a variant a spiral spring is made in one piece with this body.
- the document DE593553C in the name of BONNOUVRIER describes a timepiece component, such as a pendulum ellipse or the like, comprising a plurality of cylinders arranged parallel to each other in the manner of a lantern gear, together defining an interior volume filled with lubricating grease. .
- the document GB831161A in the name of SMITH & SONS LTD describes a clockwork whose serge is overmolded on a shaft, an attachment pin for spiral spring being also immobilized by the overmoulding material.
- a recess in the serge faces the ankle.
- the invention proposes to improve the safety design, by combining the safety functions of the horns and the stinger of an anchor escapement, whether it is a Swiss lever escapement, English anchor, pegs, or the like.
- the invention optimizes the design of the horns, so as to ensure the safety functions hitherto devolved to the sting, intended to prevent accidental movement of the anchor fork during the additional oscillation arc balance.
- the anchor according to the invention is an anchor without sting.
- the anchor according to the invention is on one level, thanks to a specific form of horns, called “crab tongs”, which ensure, all safety.
- the invention makes it possible to simplify, not only the anchor, which is now possible on one level, which allows the use of all imaginable manufacturing techniques, but also the balance, since the small plate is no longer necessary because of the disappearance of the sting of the anchor.
- the invention relates to an anchor for a clockwork escapement mechanism comprising a rocker arm equipped with a peg of ankle radius given and oscillating according to a given radius of gyration, said anchor comprising, on the one hand, and other of an opening, a first horn and a second horn for cooperation with such an ankle, wherein said first and second horns have a profile symmetrical to each other with respect to a median plane passing through a pivot axis anchor, and each comprise a concave intrados profile according to a first cylindrical sector bordering said opening and first radius of curvature, said intrados profile being connected to a convex extrados profile in a second cylindrical sector of second radius curvature, characterized in that said first radius of curvature is greater than or equal to the total of said radius of gyration and said ankle radius, and in that said second radius of curvature is less than or equal to the difference between said radius of gyration and said ankle radius and opposite said opening.
- the invention also relates to an escapement mechanism comprising a rocker pivoting about a rocker pivot axis and equipped with an anchor of given radius according to a given radius of gyration, and such an anchor that includes said exhaust mechanism .
- the invention also relates to a mechanical clockwork movement comprising at least one such escape mechanism.
- the invention also relates to a watch comprising at least one such mechanical clockwork movement.
- the invention relates to the field of watch exhaust mechanisms.
- the invention improves safety design, combining the safety functions of the horns and the stinger of an anchor escapement.
- the invention is more precisely described in the preferred and most common, but not limiting, case of the Swiss anchor.
- the invention thus relates to an anchor 1, in particular a Swiss anchor, for a watchmaking escapement mechanism, which comprises a rocker 11 equipped with a pin 12 of given pin radius R0, this rocker 11 oscillating according to a radius given gyration RG.
- the anchor 1 according to the invention is preferably designed for a given type of balance, as a function of these parameters of given ankle radius R0 and given radius of gyration RG.
- the anchor 1 comprises, on either side of an opening 3, a first horn 2A and a second horn 2B for cooperation with such an anchor 12.
- the dimensioning of the opening 3 depends on the cooperation with the pendulum 11, and also the lever arm L of the anchor head relative to an anchor pivot axis D.
- the horns 2A, 2B each describe a circular path.
- the first radius of curvature RC1 is equal to the total of the radius of gyration RG, the radius of ankle R0, and one horn step EC
- the second radius of curvature RC2 is equal to the difference between on the one hand the radius of gyration RG and on the other hand the total of the radius of ankle R0 and this ecstasy of horn EC.
- this horn freckle EC is less than or equal to 0.050 mm.
- the intrados and extrados profiles 25 are thus arranged relative to each other so that a cylinder parallel to the anchor pivot axis D and radius equal to the radius of gyration RG is remote, with the horn fretting, the value of the radius of ankle R0, a profile resulting from the combination between, on the one hand, the extrados profile 25A, 25B, of one of the horns 2A, 2B, and on the other hand the lower surface profile 20B, 20A, on the other of the horns 2B, 2A, so that these lower profile 20 and extrados profile 25 are tangent to the trajectory 15 or 16 of a pin 12 of such a rocker 11 whose pivoting axis of balance D1 is located in the median plane P in a symmetrical rest position of the exhaust mechanism 10, visible on the figure 2 .
- such a lower profile 20 prevents any overturning of the anchor 1 in the event of impact
- such an extrados profile 25 prevents in turn any reversal of the anchor 1 in case of shock.
- the figure 3 illustrates such an anchor 1, in a bearing position on a limit stop 13B of the escape mechanism 10, during a clockwise oscillation, the trajectory 15 of the pin 12 is shown in broken lines, and, in the same way, the figure 4 represents the same anchor 1, in a bearing position on a limit stop 13A of the mechanism 10 during a oscillation in the clockwise direction, the trajectory 16 of the pin 12 is shown in broken lines.
- the anchor 1 comprises, at the ends of the extrados profiles 25A; 25B closest to the anchor pivot axis D, the end-of-travel zones 19A, 19B, which are arranged to constitute stop-stops for such an anchor 12.
- the intrados 20 profile of each of the horns 2A, 2B is centered on the intrados profile of the opposite horn respectively 2B, 2A, at a center OB, OA, which is also the center of the profile of extrados 25 of the horn considered 2A, 2B.
- the figure 6 illustrates a Swiss anchor 1 which comprises, around the horns 2A, 2B, an outer ring 17 of ankle stroke limitation, having a first inner limiting surface 17A facing the extrados profile 25A of the first horn 2A, and a second inner limiting surface 17B facing the extrados profile 25B of the second first horn 2B.
- the gap between the outer ring 17 and the extrados profiles 17A, 17B is equal to twice the radius of ankle R0 plus a radial clearance J less than or equal to 0.100 mm.
- the safety is further increased, especially during the occurrence of a shock when the ankle 12 leaves the distal end of one of the horns before joining the opposite horn.
- the figure 7 illustrates a Swiss anchor 1, variant of that of the figure 6 , and which comprises, at each of the intrados profiles 20A, 20B, a notch 18A, 18B, which is dimensioned for the passage of a shaft 110 of such a rocker 11. These notches can also be made on other anchor variants such as those of Figures 2 to 5 .
- the anchor 1 according to the invention is flat and devoid of dart.
- the invention also relates to a rocker arm 11 equipped with an anchor 12 of given ankle radius R0 and oscillating according to a given radius of gyration RG about a rocker pivot axis D1.
- the rocker 11 comprises a single plate carrying the pin 12. This rocker 11 is suitable for cooperating with an anchor 1 as described above.
- the sole plate carrying the ankle 12 is constituted by the serge of the balance 11.
- the invention also relates to an escapement mechanism 10 comprising a rocker arm 11 pivoting about a rocker pivot axis D1 and equipped with an anchor 12 of given radius R0 according to a given radius of gyration RG, and such an anchor 1 according to the invention.
- the rocker 11 comprises a single plate carrying the peg 12. More particularly, the single plate carrying the peg 12 is constituted by the serge of the rocker 11.
- the figure 9 shows a variant where the limiting abutments 13A, 13B are formed by protrusions of a bridge 111 of the exhaust mechanism, and the overall number of components is greatly reduced in this advantageous variant of the invention.
- the horns 2 can advantageously, as visible on the figure 5 , have recesses 29 and / or chambers, to reduce the inertia and unbalance of the anchor 1.
- the invention also relates to a mechanical clockwork movement 30 comprising at least one such escape mechanism 10.
- the invention also concerns a timepiece 40, in particular a watch, comprising at least one such mechanical clockwork movement 30.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Micromachines (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Transmission Devices (AREA)
- Vibration Dampers (AREA)
Description
L'invention concerne une ancre pour un mécanisme d'échappement d'horlogerie comportant un balancier équipé d'une cheville de rayon donné et oscillant selon un rayon de giration donné, ladite ancre comportant, de part et d'autre d'une ouverture, une première corne et une deuxième corne pour la coopération avec une telle cheville, où lesdites première et deuxième cornes ont un profil symétrique l'une de l'autre par rapport à un plan médian passant par un axe de pivotement d'ancre, et comportent chacune un profil d'intrados concave selon un premier secteur cylindrique bordant ladite ouverture et de premier rayon de courbure, ledit profil d'intrados étant connexe à un profil d'extrados convexe selon un deuxième secteur cylindrique de deuxième rayon de courbure.The invention relates to an anchor for a clockwork escapement mechanism comprising a rocker equipped with an anchor of given radius and oscillating according to a given radius of gyration, said anchor comprising, on either side of an opening, a first horn and a second horn for cooperation with such an ankle, wherein said first and second horns have a profile symmetrical to each other with respect to a median plane passing through an anchor pivot axis, and comprise each a concave intrados profile according to a first cylindrical sector bordering said opening and first radius of curvature, said intrados profile being connected to a convex extrados profile according to a second cylindrical sector of second radius of curvature.
L'invention concerne encore un balancier équipé d'une cheville de rayon de cheville donné et oscillant selon un rayon de giration donné autour d'un axe de pivotement de balancierThe invention also relates to a rocker equipped with a peg of ankle radius given and oscillating according to a given radius of gyration about a pendulum pivot axis
L'invention concerne encore un mécanisme d'échappement comportant un balancier pivotant autour d'un axe de pivotement de balancier et équipé d'une cheville de rayon donné selon un rayon de giration donné, et une telle ancre que comporte ledit mécanisme d'échappement.The invention also relates to an escapement mechanism comprising a rocker pivoting about a rocker pivot axis and equipped with an anchor of given radius according to a given radius of gyration, and such an anchor that includes said exhaust mechanism .
L'invention concerne encore un mouvement mécanique d'horlogerie comportant au moins un tel mécanisme d'échappement.The invention also relates to a mechanical clockwork movement comprising at least one such escape mechanism.
L'invention concerne encore une montre comportant au moins un tel mouvement mécanique d'horlogerie.The invention also relates to a watch comprising at least one such mechanical clockwork movement.
L'invention concerne le domaine des mécanismes d'échappement d'horlogerie.The invention relates to the field of watch exhaust mechanisms.
Dans une montre équipée d'un échappement, notamment à ancre suisse, les fonctions de l'échappement doivent être préservées quelques soient les chocs subis par la montre. L'échappement doit être robuste et en mesure de résister aux chocs axiaux et radiaux, et ceci dans toutes les positions de la montre. Pour cela, des éléments mécaniques, appelés sécurités de l'échappement, viennent limiter la course d'éléments en rotation ou en oscillation, afin d'éviter toute position critique qui pourrait, soit perturber la marche, soit arrêter la montre.In a watch equipped with an escapement, in particular with Swiss anchor, the functions of the escapement must be preserved whatever the shocks suffered by the watch. The exhaust must be robust and able to withstand axial and radial shocks in all positions of the watch. For that, mechanical elements, called safety of the exhaust, come to limit the running of rotating or oscillating elements, in order to avoid any critical position that could either disturb the march or stop the watch.
Particulièrement, dans un échappement à ancre suisse, ces sécurités sont assurées par au moins les cornes et le dard. Ce système a prouvé sa fiabilité et sa robustesse, mais nécessite toutefois un de composants distincts, qui augmente le coût de production et le risque de non-qualité. Le fait de répartir les cornes et le dard sur deux niveaux distincts nécessite un partagement suffisant, qui a un impact important sur la hauteur du mouvement, et donc sur l'épaisseur finale de la montre.Particularly, in a Swiss lever escapement, these securities are provided by at least the horns and the sting. This system has proven its reliability and robustness, but requires however a distinct component, which increases the cost of production and the risk of non-quality. Spreading the horns and the stinger on two separate levels requires sufficient sharing, which has a significant impact on the height of the movement, and therefore on the final thickness of the watch.
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L'invention se propose d'améliorer la conception des sécurités, en combinant les fonctions de sécurité des cornes et du dard d'un échappement à ancre, qu'il s'agisse d'un échappement à ancre suisse, à ancre anglais, à chevilles, ou similaire.The invention proposes to improve the safety design, by combining the safety functions of the horns and the stinger of an anchor escapement, whether it is a Swiss lever escapement, English anchor, pegs, or the like.
L'invention optimise la conception des cornes, de façon à assurer les fonctions de sécurité jusqu'alors dévolues au dard, destiné à empêcher les déplacements accidentels de la fourchette d'ancre pendant l'arc d'oscillation supplémentaire du balancier. L'ancre selon l'invention est donc une ancre sans dard.The invention optimizes the design of the horns, so as to ensure the safety functions hitherto devolved to the sting, intended to prevent accidental movement of the anchor fork during the additional oscillation arc balance. The anchor according to the invention is an anchor without sting.
L'ancre selon l'invention est sur un seul niveau, grâce à une forme spécifique des cornes, dite « en pinces de crabe », qui assurent, seules, toutes les sécurités.The anchor according to the invention is on one level, thanks to a specific form of horns, called "crab tongs", which ensure, all safety.
L'invention permet de simplifier, non seulement l'ancre, désormais réalisable sur un seul niveau, ce qui autorise le recours à toutes les techniques de fabrication imaginables, mais aussi le balancier, puisque le petit plateau n'est plus nécessaire du fait de la disparition du dard de l'ancre.The invention makes it possible to simplify, not only the anchor, which is now possible on one level, which allows the use of all imaginable manufacturing techniques, but also the balance, since the small plate is no longer necessary because of the disappearance of the sting of the anchor.
A cet effet, l'invention concerne une ancre pour un mécanisme d'échappement d'horlogerie comportant un balancier équipé d'une cheville de rayon de cheville donné et oscillant selon un rayon de giration donné, ladite ancre comportant, de part et d'autre d'une ouverture, une première corne et une deuxième corne pour la coopération avec une telle cheville, où lesdites première et deuxième cornes ont un profil symétrique l'une de l'autre par rapport à un plan médian passant par un axe de pivotement d'ancre, et comportent chacune un profil d'intrados concave selon un premier secteur cylindrique bordant ladite ouverture et de premier rayon de courbure, ledit profil d'intrados étant connexe à un profil d'extrados convexe selon un deuxième secteur cylindrique de deuxième rayon de courbure, caractérisée en ce que ledit premier rayon de courbure est supérieur ou égal au total dudit rayon de giration et dudit rayon de cheville, et en ce que ledit deuxième rayon de courbure est inférieur ou égal à la différence entre ledit rayon de giration et ledit rayon de cheville et à l'opposé de ladite ouverture.To this end, the invention relates to an anchor for a clockwork escapement mechanism comprising a rocker arm equipped with a peg of ankle radius given and oscillating according to a given radius of gyration, said anchor comprising, on the one hand, and other of an opening, a first horn and a second horn for cooperation with such an ankle, wherein said first and second horns have a profile symmetrical to each other with respect to a median plane passing through a pivot axis anchor, and each comprise a concave intrados profile according to a first cylindrical sector bordering said opening and first radius of curvature, said intrados profile being connected to a convex extrados profile in a second cylindrical sector of second radius curvature, characterized in that said first radius of curvature is greater than or equal to the total of said radius of gyration and said ankle radius, and in that said second radius of curvature is less than or equal to the difference between said radius of gyration and said ankle radius and opposite said opening.
L'invention concerne encore un mécanisme d'échappement comportant un balancier pivotant autour d'un axe de pivotement de balancier et équipé d'une cheville de rayon donné selon un rayon de giration donné, et une telle ancre que comporte ledit mécanisme d'échappement.The invention also relates to an escapement mechanism comprising a rocker pivoting about a rocker pivot axis and equipped with an anchor of given radius according to a given radius of gyration, and such an anchor that includes said exhaust mechanism .
L'invention concerne encore un mouvement mécanique d'horlogerie comportant au moins un tel mécanisme d'échappement.The invention also relates to a mechanical clockwork movement comprising at least one such escape mechanism.
L'invention concerne encore une montre comportant au moins un tel mouvement mécanique d'horlogerie.The invention also relates to a watch comprising at least one such mechanical clockwork movement.
D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description détaillée qui va suivre, en référence aux dessins annexés, où :
- la
figure 1 représente, de façon schématisée, partielle, et en section dans un plan passant par un axe de pivotement de balancier et un axe de pivotement d'ancre, un détail d'un mécanisme d'échappement selon l'invention, comportant une ancre sans dard, et un balancier sans petit plateau ; - la
figure 2 représente, de façon schématisée, partielle et en plan, une extrémité d'une ancre sans dard à cornes optimisées selon l'invention, dans une position de repos en symétrie entre deux butées de renversement ; - la
figure 3 représente, de façon analogue à lafigure 3 , la même ancre, dans une position d'appui sur butée lors d'une oscillation dans le sens horaire ; - la
figure 4 représente, de façon analogue à lafigure 3 , la même ancre, dans une position d'appui sur butée lors d'une oscillation dans le sens anti-horaire ; - la
figure 5 représente, de façon schématisée et en plan, une ancre suisse sans dard à cornes optimisées selon l'invention, dans une position d'appui sur butée lors d'une oscillation dans le sens anti-horaire ; - la
figure 6 représente, de façon schématisée et en plan, une ancre suisse sans dard à cornes optimisées selon l'invention, et comportant un anneau externe de limitation de course de cheville, dans une position d'appui sur butée lors d'une oscillation dans le sens anti-horaire ; - la
figure 7 représente, de façon schématisée et en plan, une ancre suisse sans dard à cornes optimisées selon l'invention, et comportant un anneau externe de limitation de course de cheville, et comportant encore des encoches dimensionnées pour le passage de l'arbre d'un balancier, dans une position d'appui sur butée lors d'une oscillation dans le sens anti-horaire ; - la
figure 8 représente, de façon schématisée, partielle, et en section dans un plan passant par un axe de pivotement de balancier et un axe de pivotement d'ancre, un détail d'un mécanisme d'échappement selon l'invention, comportant une ancre sans dard, et un balancier sans petit plateau ; - la
figure 9 représente, de façon schématisée, partielle, et en vue en paln, le mécanisme de lafigure 8 ; - la
figure 10 représente, sous forme d'un schéma-blocs, une montre comportant un mouvement comportant un mécanisme d'échappement selon l'invention.
- the
figure 1 represents, schematically, partially, and in section in a plane passing through a rocker pivot axis and an anchor pivot axis, a detail of an escapement mechanism according to the invention, comprising an anchor without stinger , and a pendulum without a small plate; - the
figure 2 represents, schematically, partially and in plan, an end of an anchor without stinger optimized horns according to the invention, in a position of rest in symmetry between two overturning stops; - the
figure 3 represents, in a similar way tofigure 3 , the same anchor, in a position of support on abutment during a oscillation in the clockwise direction; - the
figure 4 represents, in a similar way tofigure 3 , the same anchor, in a position of support on abutment during a swing in the counterclockwise direction; - the
figure 5 schematically shows in plan a Swiss leverless anchor with optimized horns according to the invention, in a position of abutment support during a swing in the counterclockwise direction; - the
figure 6 schematically shows in plan view a Swiss leverless anchor with horns optimized according to the invention, and comprising an external ankle stroke limitation ring, in a bearing abutment position during an oscillation in the direction anti-clockwise; - the
figure 7 schematically shows in plan a Swiss leverless anchor with horns optimized according to the invention, and comprising an external ankle stroke limiting ring, and further comprising notches sized for the passage of the shaft of a pendulum, in a position of support on abutment during a swing in the counterclockwise direction; - the
figure 8 represents, schematically, partially, and in section in a plane passing through a rocker pivot axis and an anchor pivot axis, a detail of an escapement mechanism according to the invention, comprising an anchor without stinger , and a pendulum without a small plate; - the
figure 9 represents, schematically, partially, and in paln view, the mechanism of thefigure 8 ; - the
figure 10 represents, in the form of a block diagram, a watch comprising a movement comprising an escape mechanism according to the invention.
L'invention concerne le domaine des mécanismes d'échappement d'horlogerie.The invention relates to the field of watch exhaust mechanisms.
L'invention améliore la conception des sécurités, en combinant les fonctions de sécurité des cornes et du dard d'un échappement à ancre. L'invention est plus précisément décrite dans le cas préféré et le plus usuel, mais non limitatif, de l'ancre suisse.The invention improves safety design, combining the safety functions of the horns and the stinger of an anchor escapement. The invention is more precisely described in the preferred and most common, but not limiting, case of the Swiss anchor.
L'invention concerne ainsi une ancre 1, notamment une ancre suisse, pour un mécanisme d'échappement 10 d'horlogerie, lequel comporte un balancier 11 équipé d'une cheville 12 de rayon de cheville donné R0, ce balancier 11 oscillant selon un rayon de giration donné RG.The invention thus relates to an
L'ancre 1 selon l'invention est de préférence conçue pour un type de balancier donné, en fonction de ces paramètres de rayon de cheville donné R0 et de rayon de giration donné RG.The
L'ancre 1 comporte, de part et d'autre d'une ouverture 3, une première corne 2A et une deuxième corne 2B pour la coopération avec une telle cheville 12. Le dimensionnement de l'ouverture 3 dépend de la coopération avec le balancier 11, et aussi du bras de levier L de la tête d'ancre par rapport à un axe de pivotement d'ancre D.The
Lors du pivotement de l'ancre 1 autour de cet axe de pivotement d'ancre D, les cornes 2A, 2B, décrivent chacune une trajectoire circulaire.During the pivoting of the
Selon l'invention, et tel que visible sur la
- un profil d'intrados 20 concave selon un premier secteur cylindrique 21 bordant l'ouverture 3 et de premier rayon de courbure RC1. Ce premier rayon de courbure R1 est supérieur ou égal au total du rayon de giration RG et du rayon de cheville R0 ;
ce profil d'intrados 20 étant connexe à un profil d'extrados 25 convexe selon un deuxième secteur cylindrique 26 de deuxième rayon de courbure RC2. Ce deuxième rayon de courbure R2 est inférieur ou égal à la différence entre le rayon de giration RG et le rayon de cheville R0 ; ce deuxième secteur cylindrique 26 est situé à l'opposé de l'ouverture 3.
- a
concave intrados 20 profile according to a first cylindrical sector 21 bordering theopening 3 and first radius of curvature RC1. This first ray of curvature R1 is greater than or equal to the total of the radius of gyration RG and the ankle radius R0; - this
lower profile 20 being connected to a convex extrados profile in a second cylindrical sector 26 of second radius of curvature RC2. This second radius of curvature R2 is less than or equal to the difference between the radius of gyration RG and the ankle radius R0; this second cylindrical sector 26 is situated opposite theopening 3.
Dans une réalisation particulière, le premier rayon de courbure RC1 est égal au total du rayon de giration RG, du rayon de cheville R0, et d'un ébat de corne EC, et le deuxième rayon de courbure RC2 est égal à la différence entre d'une part le rayon de giration RG et d'autre part le total du rayon de cheville R0 et de cet ébat de corne EC. De préférence, cet ébat de corne EC est inférieur ou égal à 0,050 mm.In a particular embodiment, the first radius of curvature RC1 is equal to the total of the radius of gyration RG, the radius of ankle R0, and one horn step EC, and the second radius of curvature RC2 is equal to the difference between on the one hand the radius of gyration RG and on the other hand the total of the radius of ankle R0 and this ecstasy of horn EC. Preferably, this horn freckle EC is less than or equal to 0.050 mm.
Les profils d'intrados 20 et d'extrados 25 sont ainsi agencés l'un par rapport à l'autre de façon à ce qu'un cylindre parallèle à l'axe de pivotement d'ancre D et de rayon égal au rayon de giration RG soit distant, à l'ébat de corne près, de la valeur du rayon de cheville R0, d'un profil résultant de la combinaison entre, d'une part le profil d'extrados 25A, 25B, de l'une des cornes 2A, 2B, et d'autre part le profil d'intrados 20B, 20A, de l'autre des cornes 2B, 2A, de façon à ce que ces profil d'intrados 20 et profil d'extrados 25 soient tangents à la trajectoire 15 ou 16 d'une cheville 12 d'un tel balancier 11 dont l'axe de pivotement de balancier D1 est situé dans le plan médian P dans une position symétrique de repos du mécanisme d'échappement 10, visible sur la
Ainsi, dans un première partie de l'oscillation du balancier 11 un tel profil d'intrados 20 prévient tout renversement de l'ancre 1 en cas de choc, et, dans une deuxième partie de l'oscillation du balancier 11 correspondant au reste de son oscillation un tel profil d'extrados 25 prévient à son tour tout renversement de l'ancre 1 en cas de choc.Thus, in a first part of the oscillation of the
La
De préférence, l'ancre 1 comporte, aux extrémités des profils d'extrados 25A ; 25B les plus proches de l'axe de pivotement d'ancre D, des zones de fin de course 19A, 19B, qui sont agencées pour constituer des butées d'arrêt d'un telle cheville 12.Preferably, the
Dans une réalisation préférée, tel que visible sur les
La
La
De préférence, dans ses différentes exécutions, l'ancre 1 selon l'invention est plate et dépourvue de dard.Preferably, in its various embodiments, the
L'invention concerne encore un balancier 11 équipé d'une cheville 12 de rayon de cheville donné R0 et oscillant selon un rayon de giration donné RG autour d'un axe de pivotement de balancier D1. Selon l'invention le balancier 11 comporte un plateau unique porteur de la cheville 12. Ce balancier 11 est approprié pour coopérer avec une ancre 1 telle que décrite ci-dessus.The invention also relates to a
Dans une réalisation particulière, le plateau unique porteur de la cheville 12 est constitué par la serge du balancier 11.In a particular embodiment, the sole plate carrying the
L'invention concerne encore un mécanisme d'échappement 10 comportant un balancier 11 pivotant autour d'un axe de pivotement de balancier D1 et équipé d'une cheville 12 de rayon donné R0 selon un rayon de giration donné RG, et une telle ancre 1 selon l'invention.The invention also relates to an
Avantageusement le balancier 11 comporte un plateau unique porteur de la cheville 12. Plus particulièrement, le plateau unique porteur de la cheville 12 est constitué par la serge du balancier 11.Advantageously, the
La
Les cornes 2 peuvent avantageusement, tel que visible sur la
L'invention concerne encore un mouvement mécanique d'horlogerie 30 comportant au moins un tel mécanisme d'échappement 10.The invention also relates to a
L'invention concerne encore une pièce d'horlogerie 40, notamment une montre, comportant au moins un tel mouvement mécanique d'horlogerie 30.The invention also concerns a
L'invention présente de nombreux avantages :
- la suppression du dard d'ancre traditionnel ;
- la suppression du petit plateau de balancier correspondant à ce dard ;
- la diminution des risques et coûts de non-qualité, grâce à la suppression d'un assemblage
- la réduction de l'encombrement en hauteur du mécanisme d'échappement (un seul niveau d'ancre au lieu de deux, un seul niveau de balancier au lieu de deux voire trois), et donc du mouvement complet ;
- la liberté de géométrie de forme autorisant une fabrication de l'ancre par étampage, ou par fabrication de type DRIE -Silicium/Ni- « LIGA » ou similaire, ou par injection plastique ;
- la possibilité de chasser la cheville de balancier directement dans un bras de la serge du balancier, l'assemblage d'un plateau n'étant alors plus nécessaire ;
- les sécurités sont parfaitement assurées dans toutes les positions ;
- l'invention est applicable à tout type d'échappement à ancre, notamment à ancre suisse.
- removal of the traditional anchor stinger;
- the removal of the small balance plate corresponding to this sting;
- reducing the risks and costs of non-quality, thanks to the removal of an assembly
- the reduction in the height of the escapement mechanism (only one level of anchor instead of two, a single level of balance instead of two or three), and therefore the complete movement;
- freedom of shape geometry authorizing manufacture of the anchor by stamping, or by DRIE -Silicon / Ni- "LIGA" type manufacturing or similar, or by plastic injection;
- the possibility of driving the balance peg directly into an arm of the balance rod serge, the assembly of a tray being then no longer necessary;
- the securities are perfectly insured in all positions;
- the invention is applicable to any type of escapement anchor, including Swiss anchor.
Claims (14)
- Pallet lever (1) for a timepiece escapement mechanism (10) including a balance (11) provided with a pin (12) of a given pin radius (R0) and oscillating over a given radius of gyration (RG), said pallet lever (1) including, on either side of an aperture (3), a first horn (2A) and a second horn (2B) for cooperation with a pin (12) of this type, wherein said first and second horns (2A; 2B) have a symmetrical profile to each other relative to a median plane (P) passing through a pallet lever pivot axis (D), and each includes a concave inner profile (20) over a first cylindrical sector (21) bordering said aperture (3) and having a first radius of curvature (RC1), said concave inner profile (20) being adjacent to a convex outer profile (25) over a second cylindrical sector (26) having a second radius of curvature (RC2), characterized in that said first radius of curvature (RC1) is greater than or equal to the sum of said radius of gyration (RG) and said pin radius (R0), and in that said second radius of curvature (RC2) is less than or equal to the difference between said radius of gyration (RG) and said pin radius (R0) and opposite said aperture (3).
- Pallet lever (1) according to claim 1, characterized in that said first radius of curvature (RC1) is equal to the sum of said radius of gyration (RG), said pin radius (R0), and a horn endshake (EC), and in that said second radius of curvature (RC2) is equal to the difference between, on the one hand, said radius of gyration (RG) and on the other hand, the sum of said pin radius (R0) and said horn endshake (EC).
- Pallet lever (1) according to claim 2, characterized in that said horn endshake (EC) is less than or equal to 0.050 mm.
- Pallet lever (1) according to any of the preceding claims, characterized in that said concave inner profile (20) of each of said horns (2A: 2B) is centred on said concave inner profile of the opposite horn (2B; 2A) at a centre (OB; OA) which is also that of said convex outer profile (25) of said horn concerned (2A; 2B).
- Pallet lever (1) according to any of the preceding claims, characterized in that the lever includes, about said horns (2A; 2B), an outer ring (17) limiting the pin travel, including a first inner limiting surface (17A) facing said convex outer profile (25A) of said first horn (2A), and a second inner limiting surface (17B) facing said convex outer profile (25B) of said second first horn (2B).
- Pallet lever (1) according to the preceding claim, characterized in that the space between said outer ring (17) and said convex outer profiles (17A; 17B) is equal to twice said pin ratio (R0) plus a radial play (J) less than or equal to 0.100 mm.
- Pallet lever (1) according to any of the preceding claims, characterized in that the lever includes, on each of said concave inner profiles (20A; 20B), a notch (18A, 18B) sized for the passage of a staff (19) of a said balance (11).
- Pallet lever (1) according to any of the preceding claims, characterized in that the lever includes, at the ends of said convex outer profiles (25A; 25B) closest to said pallet lever pivot axis (D), end of travel areas (19A; 19B) arranged to form stop members for a said pin (12).
- Pallet lever (1) according to any of the preceding claims, characterized in that the lever is a Swiss lever.
- Pallet lever (1) according to any of the preceding claims, characterized in that the pallet lever is on a single level.
- Escapement mechanism (10) comprising a balance (11) provided with a pin (12) of a given pin radius (R0) and oscillating over a given radius of gyration (RG) about a balance pivot axis (D1), characterized in that said pin (12) cooperates with a pallet lever (1) according to any of claims 1 to 10, comprised in said escapement mechanism (10).
- Escapement mechanism (10) according to claim 11, characterized in that said balance (11) comprises a roller carrying said pin (12) formed by the felloe of said balance (11).
- Mechanical timepiece movement (30) including at least one said escapement mechanism (10) according to claims 11 or 12.
- Watch (40) including at least one such mechanical timepiece movement (30) according to claim 13.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP13191770.0A EP2871535B1 (en) | 2013-11-06 | 2013-11-06 | Timepiece pallet with optimised horns |
US14/514,549 US9075395B2 (en) | 2013-11-06 | 2014-10-15 | Timepiece pallet lever with optimised horns |
JP2014222321A JP5941119B2 (en) | 2013-11-06 | 2014-10-31 | Watch ankle lever with optimized squares |
CN201410643378.3A CN104635468B (en) | 2013-11-06 | 2014-11-06 | Clock and watch escapement bar with optimal corner |
CN201420679902.8U CN204270013U (en) | 2013-11-06 | 2014-11-06 | Escapement bar, escapement, escapement, movement of mechanical clock and clock and watch |
HK15110067.0A HK1209499A1 (en) | 2013-11-06 | 2015-10-14 | Timepiece pallet lever with optimised horns |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP13191770.0A EP2871535B1 (en) | 2013-11-06 | 2013-11-06 | Timepiece pallet with optimised horns |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2871535A1 EP2871535A1 (en) | 2015-05-13 |
EP2871535B1 true EP2871535B1 (en) | 2017-06-28 |
Family
ID=49517432
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13191770.0A Active EP2871535B1 (en) | 2013-11-06 | 2013-11-06 | Timepiece pallet with optimised horns |
Country Status (5)
Country | Link |
---|---|
US (1) | US9075395B2 (en) |
EP (1) | EP2871535B1 (en) |
JP (1) | JP5941119B2 (en) |
CN (2) | CN104635468B (en) |
HK (1) | HK1209499A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2871535B1 (en) * | 2013-11-06 | 2017-06-28 | ETA SA Manufacture Horlogère Suisse | Timepiece pallet with optimised horns |
EP2947522B1 (en) * | 2014-05-20 | 2017-05-03 | Société anonyme de la Manufacture d'Horlogerie Audemars Piguet & Cie | Timepiece pallet for mechanical oscillator and timer-controlled timepiece trigger mechanism |
EP3557334A1 (en) * | 2018-04-17 | 2019-10-23 | Dominique Renaud SA | Escapement mechanism with lock pallet and timepiece comprising such an escapement mechanism |
WO2019219679A1 (en) * | 2018-05-16 | 2019-11-21 | Dominique Renaud Sa | Escapement mechanism for timepiece |
US11740589B2 (en) * | 2018-07-19 | 2023-08-29 | Werner Janer | Multi-cam, continuous-drive escapement mechanism |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
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US179769A (en) * | 1876-07-11 | champod | ||
DE593653C (en) * | 1934-03-02 | Louis Bonnouvrier | Escapement with noise dampening | |
US372003A (en) * | 1887-10-25 | Escapement for time-pieces | ||
US194744A (en) * | 1877-08-28 | Improvement in watch-escapements | ||
FR206876A (en) * | 1890-07-08 | 1890-10-30 | Marc Kwald | |
US725037A (en) * | 1902-09-03 | 1903-04-14 | Edward Buysse | Balance-escapement. |
US1105062A (en) * | 1912-06-25 | 1914-07-28 | Joe Steiner | Equalizing unlock and impulse action escapement. |
CH286179A (en) * | 1950-06-08 | 1952-10-15 | Luethi Arthur | Lifted. |
GB831161A (en) * | 1957-06-20 | 1960-03-23 | Smith & Sons Ltd S | Improvements in or relating to balance wheels for time pieces |
US3225866A (en) * | 1963-11-19 | 1965-12-28 | Marianne K Bernett | Lubrication system for fine mechanisms |
FR2063101A1 (en) * | 1969-09-15 | 1971-07-09 | Lip Horlogerie | |
CH1491672A4 (en) * | 1972-10-12 | 1976-03-15 | ||
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 |
CH699273B1 (en) * | 2006-06-30 | 2010-02-15 | Patek Philippe Sa | Exhaust anchor. |
EP1983388B1 (en) * | 2007-04-18 | 2010-01-20 | ETA SA Manufacture Horlogère Suisse | Direct-pulse escapement for timepiece |
CH702156B1 (en) * | 2009-11-13 | 2017-08-31 | Nivarox Far Sa | Spiral balance resonator for a timepiece. |
EP2336832B1 (en) * | 2009-12-21 | 2020-12-02 | Rolex Sa | Swiss lever escapement |
EP2413202B1 (en) * | 2010-07-30 | 2017-11-15 | ETA SA Manufacture Horlogère Suisse | Method for improving the wear and impact resistance of an horological component. Anchor for clock movement with wear and impact resistance |
CH704246B1 (en) * | 2010-12-21 | 2014-12-31 | Nivarox Sa | piece micromechanical component. |
EP2871535B1 (en) * | 2013-11-06 | 2017-06-28 | ETA SA Manufacture Horlogère Suisse | Timepiece pallet with optimised horns |
-
2013
- 2013-11-06 EP EP13191770.0A patent/EP2871535B1/en active Active
-
2014
- 2014-10-15 US US14/514,549 patent/US9075395B2/en active Active
- 2014-10-31 JP JP2014222321A patent/JP5941119B2/en active Active
- 2014-11-06 CN CN201410643378.3A patent/CN104635468B/en active Active
- 2014-11-06 CN CN201420679902.8U patent/CN204270013U/en not_active Withdrawn - After Issue
-
2015
- 2015-10-14 HK HK15110067.0A patent/HK1209499A1/en unknown
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
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CN104635468A (en) | 2015-05-20 |
JP2015090366A (en) | 2015-05-11 |
EP2871535A1 (en) | 2015-05-13 |
US20150124570A1 (en) | 2015-05-07 |
JP5941119B2 (en) | 2016-06-29 |
HK1209499A1 (en) | 2016-04-01 |
CN104635468B (en) | 2017-10-27 |
US9075395B2 (en) | 2015-07-07 |
CN204270013U (en) | 2015-04-15 |
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