• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a vortex mechanism (1) for a horological movement, comprising a rocker mechanism (2), an escapement mechanism (3) and a cage (12) mounted in a structure of the watch movement in rotation around a a vortex axis (Z0). The rocker mechanism comprises a spring (14) and a rocker wheel (16) mounted in the cage (12) pivotally about said vortex axis (Z0). The escape mechanism (3) comprises an escape wheel (5) with teeth (9) and an anchor (7) comprising pallets (17) configured to engage said teeth (9), the anchor (7) being mounted in the cage (12) and rotatably coupled to the cage (12) by means of a pivot device. The escape wheel (5) encircles the vortex axis (Z0) and is fixed or secured to said structure of the watch movement.
    公开号:CH710487A2
    申请号:CH01863/14
    申请日:2014-12-03
    公开日:2016-06-15
    发明作者:Stranczl Marc
    申请人:Nivarox-Far S A；
    IPC主号:
    专利说明:

    Description
    The present invention relates to a tourbillon mechanism for watch movement.
    [0002] Some watch movements include a tourbillon mechanism. It is known that the running of a watch differs according to the vertical position in which it is observed. The essential cause comes from the imbalance or unbalance of the balance and that of the balance spring. To cancel these differences in operation, it is necessary that the center of gravity of the balance spring system is at the center of rotation of these elements and is maintained during oscillations. The purpose of a vortex mechanism is not to remove these differences, but to compensate for them. To achieve this, the exhaust-pendulum assembly is taken all positions, by imposing a rotation which, generally, is one turn per minute. Under these conditions, we obtain a mixing of vertical positions, which ultimately results in an average step. The vortex regulating mechanism is generally composed of an escapement comprising a pendulum-balance assembly mounted in a rotating cage suspended between two pivot points. One of the drawbacks of known vortex mechanisms is their bulk, and in particular their thickness due to the stack, along the axis of rotation of the cage, the sprung balance and a conventional exhaust mechanism.
    It is often sought to reduce the thickness of components of a watch movement, for example for aesthetic reasons. There is also a constant desire to increase the performance of watch movements and to reduce the wear of the components constituting the movement.
    An object of the invention is to provide a compact vortex mechanism, in particular having a small thickness, for a watch movement.
    Another object of the invention is to provide a vortex mechanism having a low inertia.
    Another object of the invention is to provide a tourbillon mechanism for a watch movement having a good performance.
    Another object of the invention is to provide a tourbillon mechanism for a watch movement economic and easy to manufacture.
    Yet another object of the invention is to provide a tourbillon mechanism for a watch movement that has a very low power consumption.
    Yet another object of the invention is to provide a tourbillon mechanism for a watch movement that is robust.
    The objects of the invention are achieved through a tourbillon mechanism for a watch movement according to claim 1. The dependent claims describe advantageous aspects of the invention.
    In the present invention is described a vortex mechanism for a watch movement, comprising a balance mechanism, an escapement mechanism and a cage mounted in a watch movement structure rotated about a vortex axis. The balance mechanism comprises a spring and a balance wheel mounted in the cage pivotally about said vortex axis. The escape mechanism includes an escape wheel with teeth and an anchor comprising pallets configured to engage said teeth, the anchor being mounted in the cage and rotatably coupled to the cage by means of a pivot device. The escape wheel encircles the vortex axis and is fixed or secured to said structure of the watch movement. The pivot device is configured for resilient pivoting and anchor support.
    In one embodiment, the pivot device comprises one or more resilient arms connecting the anchor to an anchor zone fixed to the cage or secured thereto.
    In one embodiment, the pivot device comprises a pair of said elastic arms.
    In one embodiment, the pair of elastic arms with the anchoring zone may define a substantially triangular shape. In one embodiment, the elastic arms can have the same length and the same geometry.
    In one embodiment, the anchor pivots about a virtual axis of rotation at the intersection of the neutral fibers of the elastic arms.
    In one embodiment, the teeth of the escape wheel point towards the outside of the wheel and the vanes are arranged radially outside the escape wheel and point towards the inside of the wheel. wheel.
    The cage can be connected to a power source providing a torque on the cage, the power source being coupled to the cage by means of a drive train meshing with a pinion fixed or integral with the cage.
    In one embodiment, the set of elements integral with the pivot device may comprise one or more of the following elements: a part of the anchor or the whole of the anchor; part of the cage or the whole cage; the spring of the balance mechanism. The pivot device or the set of elements integral with the pivot device can form a monolithic structure.
    In one embodiment, the pivot device comprises a bistable mechanism.
    Description
    The present invention relates to a tourbillon mechanism for watch movement.
    [0002] Some watch movements include a tourbillon mechanism. It is known that the running of a watch differs according to the vertical position in which it is observed. The essential cause comes from the imbalance or unbalance of the balance and that of the balance spring. To cancel these differences in operation, it is necessary that the center of gravity of the balance spring system is at the center of rotation of these elements and is maintained during oscillations. The purpose of a vortex mechanism is not to remove these differences, but to compensate for them. To achieve this, the exhaust-pendulum assembly is taken all positions, by imposing a rotation which, generally, is one turn per minute. Under these conditions, we obtain a mixing of vertical positions, which ultimately results in an average step. The vortex regulating mechanism is generally composed of an escapement comprising a pendulum-balance assembly mounted in a rotating cage suspended between two pivot points. One of the drawbacks of known vortex mechanisms is their bulk, and in particular their thickness due to the stack, along the axis of rotation of the cage, the sprung balance and a conventional exhaust mechanism.
    It is often sought to reduce the thickness of components of a watch movement, for example for aesthetic reasons. There is also a constant desire to increase the performance of watch movements and to reduce the wear of the components constituting the movement.
    An object of the invention is to provide a compact vortex mechanism, in particular having a small thickness, for a watch movement.
    Another object of the invention is to provide a vortex mechanism having a low inertia.
    Another object of the invention is to provide a tourbillon mechanism for a watch movement having a good performance.
    Another object of the invention is to provide a tourbillon mechanism for a watch movement economic and easy to manufacture.
    Yet another object of the invention is to provide a tourbillon mechanism for a watch movement that has a very low power consumption.
    Yet another object of the invention is to provide a tourbillon mechanism for a watch movement that is robust.
    The objects of the invention are achieved through a tourbillon mechanism for a watch movement according to claim 1. The dependent claims describe advantageous aspects of the invention.
    In the present invention is described a vortex mechanism for a watch movement, comprising a balance mechanism, an escapement mechanism and a cage mounted in a watch movement structure rotated about a vortex axis. The balance mechanism comprises a spring and a balance wheel mounted in the cage pivotally about said vortex axis. The escape mechanism includes an escape wheel with teeth and an anchor comprising pallets configured to engage said teeth, the anchor being mounted in the cage and rotatably coupled to the cage by means of a pivot device. The escape wheel encircles the vortex axis and is fixed or secured to said structure of the watch movement. The pivot device is configured for resilient pivoting and anchor support.
    In one embodiment, the pivot device comprises one or more resilient arms connecting the anchor to an anchor zone fixed to the cage or secured thereto.
    In one embodiment, the pivot device comprises a pair of said elastic arms.
    In one embodiment, the pair of elastic arms with the anchoring zone may define a substantially triangular shape. In one embodiment, the elastic arms can have the same length and the same geometry.
    In one embodiment, the anchor pivots about a virtual axis of rotation at the intersection of the neutral fibers of the elastic arms.
    In one embodiment, the teeth of the escape wheel point towards the outside of the wheel and the vanes are arranged radially outside the escape wheel and point towards the inside of the wheel. wheel.
    The cage can be connected to a power source providing a torque on the cage, the power source being coupled to the cage by means of a drive train meshing with a pinion fixed or integral with the cage.
    In one embodiment, the set of elements integral with the pivot device may comprise one or more of the following elements: a part of the anchor or the whole of the anchor; part of the cage or the whole cage; the spring of the balance mechanism. The pivot device or the set of elements integral with the pivot device can form a monolithic structure.
    In one embodiment, the pivot device comprises a bistable mechanism. In one embodiment, the pivot device or a set of elements integral with the pivot device can be formed by deposition or etching processes.
    In embodiments, the pivot device or the set of integral elements may in particular be formed by a LIGA method.
    In embodiments, the pivot device or the set of integral elements may be of a silicon-based material.
    In embodiments, the pivot device or the set of integral elements may be manufactured by a silicon on insulator process called "SOI" (English: Silicon On Insulator). In this variant, the structure consists of a stack of a silicon layer on an insulating layer. This insulator may for example be silicon dioxide (SiO 2).
    In embodiments, the pivot device or the set of integral elements may be Ni, NiP, or amorphous metal.
    The pivot device or the set of integral elements may also include sacrificial structures that assist in the assembly.
    Other objects and advantageous aspects of the invention will appear on reading the claims, as well as the detailed description of the embodiments below, and the appended drawings, in which:
    Fig. 1 is a schematic sectional view of a tourbillon mechanism for a watch mechanism according to one embodiment of the invention;
    Fig. 2 is a view of an exhaust part of a vortex mechanism for a watch mechanism according to one embodiment of the invention;
    Fig. 3 is a view of an exhaust part of a tourbillon mechanism for a watch mechanism, according to another embodiment of the invention.
    Referring to the figures, a tourbillon mechanism for a watch movement comprises a rocker mechanism 2 and an exhaust mechanism 3 mounted in a cage 12.
    The rocker mechanism 2 comprises a spring 14 and a rocker wheel 16 fixed on an axle 18 pivotally mounted in the cage 12. The opposite ends 20 of the axis are housed in bearings 26 arranged in walls 28a, 28b of the cage 12. A spring 14, which is in the illustrated embodiment, in the form of a spiral, is fixed by a first end to the axis 18 (or directly to the balance wheel) , and by its other end to the cage 12 so as to apply a relative rotational elastic force between the balance wheel 16 and the cage 12.
    The escape mechanism comprises an escape wheel 5 provided with teeth 9, an anchor 7, and a plateau device 4 coupled to the balance 2.
    The anchor comprises a fork 13, pallets 17, 17a, 17b, and a rod 15 connecting the pallets with the fork. The rod is rotatably coupled to the cage 12 by means of a pivoting device 1 1 elastic we will describe in more detail below. The rod 15 and the vanes 17 pivot about a Zavirtuel axis of rotation being, in the example shown, between the vanes 17a, 17b approximately at the intersection of the neutral fibers of the elastic blades.
    The pallets cooperate with the teeth 9 of the escape wheel. One pallet forms the entry pallet 17a and the other constitutes the exit pallet 17b. The anchor further comprises a dart 27 fixed to the fork by means for example of a shaft driven or glued into a fixing hole at the base of the fork. The tray device 4 comprises a large plate 6 with an anchor 10 which engages the horns of the fork 13 and a small plate 8 provided with a notch 16 for the passage of the stinger 27. The illustrated mechanism operates according to the principle of a Swiss anchor type escapement. This principle being well known in itself, the conventional elements and their operation will not be described in detail herein.
    The teeth 9 of the escape wheel point towards the outside of the wheel and the vanes 17a, 17b are arranged radially on the outside of the escape wheel and point inwards, namely towards the outside. axis of rotation of the tourbillon cage. This advantageously makes it possible to increase the length of the elastic arms 21 of the pivot device 1 1 while ensuring a compact exhaust mechanism. The cage 12 is rotatably mounted, by means of bearings 30a, 30b, in a frame 22 or fixed structure of the watch movement. The cage 12 is connected to a source of energy providing a rotational torque on the cage. This source of energy can be coupled to the cage by means of a drive train 24 meshing with a pinion 32 fixed to or integral with the body of the cage 12. A second axis 34 can be fixed or secured to the cage 12 for example by extending from the center of the pinion 32 through the bearing 30b, aligned with the axis of rotation Z0 of the cage 12. A second display needle (not shown) can be attached to the end free of the second axis
    In one embodiment, the pivot device or a set of elements integral with the pivot device can be formed by deposition or etching processes.
    In embodiments, the pivot device or the set of integral elements may in particular be formed by a LIGA method.
    In embodiments, the pivot device or the set of integral elements may be of a silicon-based material.
    In embodiments, the pivot device or the set of integral elements may be manufactured by a silicon on insulator process called "SOI" (English: Silicon On Insulator). In this variant, the structure consists of a stack of a silicon layer on an insulating layer. This insulator may for example be silicon dioxide (SiO 2).
    In embodiments, the pivot device or the set of integral elements may be Ni, NiP, or amorphous metal.
    The pivot device or the set of integral elements may also include sacrificial structures that assist in the assembly.
    Other objects and advantageous aspects of the invention will appear on reading the claims, as well as the detailed description of the embodiments below, and the appended drawings, in which:
    Fig. 1 is a schematic sectional view of a tourbillon mechanism for a watch mechanism according to one embodiment of the invention;
    Fig. 2 is a view of an exhaust part of a vortex mechanism for a watch mechanism according to one embodiment of the invention;
    Fig. 3 is a view of an exhaust part of a tourbillon mechanism for a watch mechanism, according to another embodiment of the invention.
    Referring to the figures, a tourbillon mechanism for a watch movement comprises a rocker mechanism 2 and an exhaust mechanism 3 mounted in a cage 12.
    The rocker mechanism 2 comprises a spring 14 and a rocker wheel 16 fixed on an axle 18 pivotally mounted in the cage 12. The opposite ends 20 of the axis are housed in bearings 26 arranged in walls 28a, 28b of the cage 12. A spring 14, which is in the illustrated embodiment, in the form of a spiral, is fixed by a first end to the axis 18 (or directly to the balance wheel) , and by its other end to the cage 12 so as to apply a relative rotational elastic force between the balance wheel 16 and the cage 12.
    The escape mechanism comprises an escape wheel 5 provided with teeth 9, an anchor 7, and a plateau device 4 coupled to the balance 2.
    The anchor comprises a fork 13, pallets 17, 17a, 17b, and a rod 15 connecting the pallets with the fork. The rod is rotatably coupled to the cage 12 by means of a pivoting device 1 1 elastic we will describe in more detail below. The rod 15 and the vanes 17 pivot about a Zavirtuel axis of rotation being, in the example shown, between the vanes 17a, 17b approximately at the intersection of the neutral fibers of the elastic blades.
    The pallets cooperate with the teeth 9 of the escape wheel. One pallet forms the entry pallet 17a and the other constitutes the exit pallet 17b. The anchor further comprises a dart 27 fixed to the fork by means for example of a shaft driven or glued into a fixing hole at the base of the fork. The tray device 4 comprises a large plate 6 with an anchor 10 which engages the horns of the fork 13 and a small plate 8 provided with a notch 16 for the passage of the stinger 27. The illustrated mechanism operates according to the principle of a Swiss anchor type escapement. This principle being well known in itself, the conventional elements and their operation will not be described in detail herein.
    The teeth 9 of the escape wheel point towards the outside of the wheel and the vanes 17a, 17b are arranged radially on the outside of the escape wheel and point inwards, namely towards the outside. axis of rotation of the tourbillon cage. This advantageously makes it possible to increase the length of the elastic arms 21 of the pivot device 1 1 while ensuring a compact exhaust mechanism. The cage 12 is rotatably mounted, by means of bearings 30a, 30b, in a frame 22 or fixed structure of the watch movement. The cage 12 is connected to a source of energy providing a rotational torque on the cage. This source of energy can be coupled to the cage by means of a drive train 24 meshing with a pinion 32 fixed to or integral with the body of the cage 12. A second axis 34 can be fixed or secured to the cage 12 for example by extending from the center of the pinion 32 through the bearing 30b, aligned with the axis of rotation Z0 of the cage 12. A second display needle (not shown) can be attached to the end However, other configurations are possible, for example the display of seconds can be coupled by a gear device (not shown) to the pinion 32 or to another wheel integral or attached to the wheel. cage 12.
    The components forming the rocker mechanism 2 and the anchor 7 of the exhaust mechanism 3 are carried by the cage 12 and thus rotate with the cage relative to the frame 22 or a fixed structure of the watch movement. The escape wheel 5 is fixed or secured to the frame or a fixed structure of the watch movement.
    While the rocker wheel traverses its oscillation arc and that one of the vanes 17a, 17b engages a tooth 9 of the escape wheel 5, the cage 12 remains stationary, as well as the escape mechanism 3 and the drive train 24. The cage is well under the effect of the driving force acting on the cage gear 32, but no rotation is possible because the anchor 7, which is fixed to the body of the 12, is stopped against a tooth of the escape wheel 5 which is in fixed relationship with the frame.
    As soon as the pallet 17a, 17b is released from a tooth of the escape wheel, the cage 12 rotates at a small angle, for example at an angle equal to the displacement of the second hand, for immobilize as soon as the exhaust functions are completed and that one of the vanes 17a, 17b is again stopped against a tooth 9 of the escape wheel 5. After this movement, the assembly carried by the cage 12 occupies a new rest position.
    During the rotation of the cage 12, the pinion 32 is driven in a rotational movement, caused by its meshing in the toothing of the drive train 24.
    The rocker mechanism 2 is inside and in the axis of rotation of the cage 12 and its pivots rotate in bearings integral with the cage. As for the other parts of the exhaust with the exception of the escape wheel 5, they pivot with the tie 12. Thus, in a relatively short time, for example in one minute, by successive jumps, the entire cage 12 will have completed a tour by carrying with her all the organs she carries. It is known that the running of a watch differs according to the vertical position in which it is observed, the essential cause coming from the imbalance or imbalance of the pendulum and that of the hairspring. By making the pendulum device take all the rotational positions, for example one revolution per minute, we obtain a mixing of the vertical positions which results in an average step compensating for these differences.
    In embodiments, as illustrated in FIGS. 1 to 3, the pivot device 1 1 comprises an anchoring zone 12a, and one or more resilient arms 21 coupling the anchor 7 to the anchoring zone 12a.
    The anchoring zone may be fixed directly to the body 28 of the cage 12, or to a member fixed statically to the cage 12. In a variant, the anchoring zone 12 may also be formed of a alone with the body 28 of the cage 12. The anchor 7 may advantageously be formed in one piece with the elastic arm (s) 21.
    In an advantageous embodiment, the pivot device comprises at least two elastic arms 21 connected on either side of the rod 15 of the anchor. In the illustrated variant, the at least two elastic arms 21 with the anchoring zone 12a essentially form a triangle. The elastic arms may advantageously be arranged substantially in a plane orthogonal to the Zavirtuel axis of rotation of the anchor. The elastic arms can in particular be made in the form of thin blades. Other forms and configurations of elastic arms are however possible within the scope of the invention in that they fulfill the dual function of support and spring, to support the anchor and simultaneously allow the anchor to rotate for the exhaust function. In the illustrated embodiment, the pivot device 1 1 thus serves as a spring and support for the anchor 7 pivoting about the axis of rotation Za, without the need for another pivot or support for the anchor. This advantageously makes it possible, among other things, to reduce the losses due to friction in bearings, and to reduce the bulk of the assembly comprising the anchor and its support. Moreover there is no need for lubrication of the pivot.
    In the context of the invention, it is also possible to have an anchor comprising a pivot axis supported by bearings integral with the cage or attached to the cage. The pivot axis would be arranged at a position aligned with the axis of rotation Zavirtuel of the anchor illustrated in Figs. 1 to 3. In this variant (not shown), the pivot device of the anchor can have a configuration similar to known anchor pivots.
    In the case of the variant according to FIG. 1, the flexible pivot tends to return to the rest position. It is therefore necessary to increase the angle of pull on the levees to guarantee the draw. In summary, the Swiss anchor needs draw to function properly. This draw is performed by an inclination of the rest plane of the lifts. Referring to FIG. 3, in one embodiment the pivot device 1 1 comprises a bistable mechanism 26. With a bistable mechanism, the bistability replaces the function of the draw and the lifts can have rest plans that do not cause the wheel of 'exhaust. In this variant, the bistable mechanism comprises a pair of elastic tie rods 36, each coupled at one end to the anchor 7, and each at the other end comprising a hook 38 engaging the teeth of a ratchet 40 (toothing teeth). wolf). To create a bistability with this type of flexible pivot, it is necessary to apply a load that tends to flamber the beams of the flexible guide. The hook system 38 makes it possible to adjust the prestressing in buckling of the flexible guide in order to find the preload which makes the system bistable. In the context of this invention, other bistable construction forms may be used.
    In this variant with a bistable pivot mechanism, the draw via the corners on the pallets can be reduced or removed because this function is fulfilled by the bistability of the pivot mechanism. This increases the yield '
    34. Other configurations are however possible, for example the display of seconds can be coupled by a gear device (not shown) to the pinion 32 or to another wheel secured or fixed to the cage 12.
    The components forming the rocker mechanism 2 and the anchor 7 of the exhaust mechanism 3 are carried by the cage 12 and thus rotate with the cage relative to the frame 22 or a fixed structure of the watch movement. The escape wheel 5 is fixed or secured to the frame or a fixed structure of the watch movement.
    While the rocker wheel traverses its oscillation arc and that one of the vanes 17a, 17b engages a tooth 9 of the escape wheel 5, the cage 12 remains stationary, as well as the escape mechanism 3 and the drive train 24. The cage is well under the effect of the driving force acting on the cage gear 32, but no rotation is possible because the anchor 7, which is fixed to the body of the 12, is stopped against a tooth of the escape wheel 5 which is in fixed relationship with the frame.
    As soon as the pallet 17a, 17b is released from a tooth of the escape wheel, the cage 12 rotates at a small angle, for example at an angle equal to the displacement of the second hand, for immobilize as soon as the exhaust functions are completed and that one of the vanes 17a, 17b is again stopped against a tooth 9 of the escape wheel 5. After this movement, the assembly carried by the cage 12 occupies a new rest position.
    During the rotation of the cage 12, the pinion 32 is driven in a rotational movement, caused by its meshing in the toothing of the drive train 24.
    The rocker mechanism 2 is inside and in the axis of rotation of the cage 12 and its pivots rotate in bearings integral with the cage. As for the other parts of the exhaust with the exception of the escape wheel 5, they pivot with the tie 12. Thus, in a relatively short time, for example in one minute, by successive jumps, the entire cage 12 will have completed a tour by carrying with her all the organs she carries. It is known that the running of a watch differs according to the vertical position in which it is observed, the essential cause coming from the imbalance or imbalance of the pendulum and that of the hairspring. By making the pendulum device take all the rotational positions, for example one revolution per minute, we obtain a mixing of the vertical positions which results in an average step compensating for these differences.
    In embodiments, as illustrated in FIGS. 1 to 3, the pivot device 1 1 comprises an anchoring zone 12a, and one or more resilient arms 21 coupling the anchor 7 to the anchoring zone 12a.
    The anchoring zone may be fixed directly to the body 28 of the cage 12, or to a member fixed statically to the cage 12. In a variant, the anchoring zone 12 may also be formed of a alone with the body 28 of the cage 12. The anchor 7 may advantageously be formed in one piece with the elastic arm (s) 21.
    In an advantageous embodiment, the pivot device comprises at least two elastic arms 21 connected on either side of the rod 15 of the anchor. In the illustrated variant, the at least two elastic arms 21 with the anchoring zone 12a essentially form a triangle. The elastic arms may advantageously be arranged substantially in a plane orthogonal to the Zavirtuel axis of rotation of the anchor. The elastic arms can in particular be made in the form of thin blades. Other forms and configurations of elastic arms are however possible within the scope of the invention in that they fulfill the dual function of support and spring, to support the anchor and simultaneously allow the anchor to rotate for the exhaust function. In the illustrated embodiment, the pivot device 1 1 thus serves as a spring and support for the anchor 7 pivoting about the axis of rotation Za, without the need for another pivot or support for the anchor. This advantageously makes it possible, among other things, to reduce the losses due to friction in bearings, and to reduce the bulk of the assembly comprising the anchor and its support. Moreover there is no need for lubrication of the pivot.
    In the context of the invention, it is also possible to have an anchor comprising a pivot axis supported by bearings integral with the cage or attached to the cage. The pivot axis would be arranged at a position aligned with the axis of rotation Zavirtuel of the anchor illustrated in Figs. 1 to 3. In this variant (not shown), the pivot device of the anchor can have a configuration similar to known anchor pivots.
    In the case of the variant according to FIG. 1, the flexible pivot tends to return to the rest position. It is therefore necessary to increase the angle of pull on the levees to guarantee the draw. In summary, the Swiss anchor needs draw to function properly. This draw is performed by an inclination of the rest plane of the lifts. Referring to FIG. 3, in one embodiment the pivot device 1 1 comprises a bistable mechanism 26. With a bistable mechanism, the bistability replaces the function of the draw and the lifts can have rest plans that do not cause the wheel of 'exhaust. In this variant, the bistable mechanism comprises a pair of elastic tie rods 36, each coupled at one end to the anchor 7, and each at the other end comprising a hook 38 engaging the teeth of a ratchet 40 (toothing teeth). wolf). To create a bistability with this type of flexible pivot, it is necessary to apply a load that tends to flamber the beams of the flexible guide. The hook system 38 makes it possible to adjust the prestressing in buckling of the flexible guide in order to find the preload which makes the system bistable. In the context of this invention, other bistable construction forms may be used.
    In this variant with a bistable pivot mechanism, the draw via the corners on the pallets can be reduced or removed because this function is fulfilled by the bistability of the pivot mechanism. This increases the efficiency of the exhaust system. Advantageously, according to one embodiment the pivot device 1 1 or a set of elements integral with the pivot device such as a portion 15, 13 of the anchor 7 or the whole of the anchor, and or a portion of the cage 12 or the entire cage, and / or the spring 14 of the rocker mechanism may be formed by deposition or etching processes.
    In embodiments, the pivot device or the set of integral elements may in particular be formed of precious metal or not, typically by the electroforming technique known by the abbreviation LI.G.A. from the German terms "RoentgenLithography, Galvanoformung & Abformung" and in which a single or multi-level mold is filled with a metal, for example, by electroplating Ni or Ni-P . Of course, any type of electroforming, type L.I.G.A. or not, capable of forming all or part of the pivot device described above is possible.
    In embodiments, the pivot device or the set of integral elements may advantageously form a monolithic structure.
    In embodiments, the pivot device or the set of integral elements may be of a silicon-based material.
    In embodiments, the pivot device or the set of integral elements can be manufactured by a silicon on insulator process called "SOI" (English: Silicon On Insulator). In this variant, the structure consists of a stack of a silicon layer on an insulating layer. This insulator may for example be silicon dioxide (SiO 2). The SOI plate undergoes several successive engravings through masks of appropriate shapes. Engravings can be made wet or dry. Typically one will use a deep anisotropic reactive ion etching also known by the abbreviation D.R.I.E. from the words "Deep Reactive Ion Etching".
    In embodiments of the pivot device or the set of integral elements may be amorphous metal.
    The pivot device or the set of integral elements may also include sacrificial structures that assist in the assembly.
    The invention advantageously allows to improve the operation of a vortex mechanism compared to conventional solutions by removing a mobile in the cage of the vortex mechanism The resulting vortex mechanism can be much flatter because there is one less mobile and the efficiency is improved because the inertia is lower. Indeed, the vortex mechanism according to embodiments of the invention may have a lower inertia due to its smaller number of components. In a variant using the bistability of the flexible guide, this reduces the draft on the pallets and reduce or eliminate the recoil, which improves the efficiency.
    List of references [0052] watch movement 22 frame 30 bearings
    24 training wheels
    1 swirl mechanism
    2 pendulum mechanism
    14 spring
    16 balance wheel 18 axis
    20 ends
    3 exhaust mechanism
    5 an escape wheel 9 tooth 7 an anchor
    1 1 dis ositive ivot
    Advantageously, according to one embodiment the pivot device 1 1 or a set of elements integral with the pivot device such as a portion 15, 13 of the anchor 7 or the whole of the anchor, and or a portion of the cage 12 or the entire cage, and / or the spring 14 of the rocker mechanism may be formed by deposition or etching processes.
    In embodiments, the pivot device or the set of integral elements may in particular be formed of precious metal or not, typically by the electroforming technique known by the abbreviation LI.G.A. from the German terms "RoentgenLithography, Galvanoformung & Abformung" and in which a single or multi-level mold is filled with a metal, for example, by electroplating Ni or Ni-P . Of course, any type of electroforming, type L.I.G.A. or not, capable of forming all or part of the pivot device described above is possible.
    In embodiments, the pivot device or the set of integral elements may advantageously form a monolithic structure.
    In embodiments, the pivot device or the set of integral elements may be of a silicon-based material.
    In embodiments, the pivot device or the set of integral elements can be manufactured by a silicon on insulator process called "SOI" (English: Silicon On Insulator). In this variant, the structure consists of a stack of a silicon layer on an insulating layer. This insulator may for example be silicon dioxide (SiO 2). The SOI plate undergoes several successive engravings through masks of appropriate shapes. Engravings can be made wet or dry. Typically one will use a deep anisotropic reactive ion etching also known by the abbreviation D.R.I.E. from the words "Deep Reactive Ion Etching".
    In embodiments of the pivot device or the set of integral elements may be amorphous metal.
    The pivot device or the set of integral elements may also include sacrificial structures that assist in the assembly.
    The invention advantageously allows to improve the operation of a vortex mechanism compared to conventional solutions by removing a mobile in the cage of the vortex mechanism The resulting vortex mechanism can be much flatter because there is one less mobile and the efficiency is improved because the inertia is lower. Indeed, the vortex mechanism according to embodiments of the invention may have a lower inertia due to its smaller number of components. In a variant using the bistability of the flexible guide, this reduces the draft on the pallets and reduce or eliminate the recoil, which improves the efficiency.
    List of references [0052] watch movement 22 frame 30 bearings
    24 training wheels
    1 swirl mechanism
    2 pendulum mechanism
    14 spring
    16 balance wheel 18 axis
    20 ends
    3 exhaust mechanism
    5 an escape wheel 9 tooth 7 an anchor
    1 1 device p ivot
    权利要求:
    Claims (14)
    [1]
    21 elastic arm 12a support element26 bistable mechanism36 pulling elastic 38 hook 40 ratchet teeth 12a anchoring area 13 fork27 dart 15 stick 17 pallets input pallet 17a output pallet 17b 4 device tray6 large tray 10 peg 8 small tray notch12 cage28 bodies28a, 28b walls26 steps32 escape gear 34 wheel of second Z0axe of rotation of the vortex device Zaaxe virtual rotation of the anchorclaims1. A vortex mechanism for a watch movement, comprising a rocker mechanism (2), an escapement mechanism (3) and a cage (12) mounted in a structure of the watch movement in rotation around a vortex axis ( ZO), the rocker mechanism comprising a spring (14) and a rocker wheel (16) pivotally mounted in the cage about said vortex axis, the exhaust mechanism including an escape wheel (5) with teeth (9) and an anchor (7) comprising pallets (17, 17a, 17b) configured to engage said teeth, the anchor being mounted in the cage and rotatably coupled to the cage by means of a pivoting device (11 ), characterized in that the escape wheel encircles the vortex axis and is fixed or integral with said structure of the watch movement and in that the pivot device is configured for elastic pivoting and support of the anchor.
    [2]
    2. Mechanism according to the preceding claim, characterized in that the pivot device comprises one or more elastic arms (21) connecting the anchor to an anchoring zone (12a) fixed to or integral with the cage.
    [3]
    3. Mechanism according to the preceding claim, characterized in that the pivot device comprises a pair of said elastic arms.21 elastic arm 12a support element26 bistable mechanism36 pulling elastic 38 hook 40 ratchet teeth 12a anchoring area 13 fork27 dart 15 stick 17 pallets input pallet 17a output pallet 17b 4 device tray6 large tray 10 peg 8 small tray notch12 cage28 bodies28a, 28b walls26 steps32 escape gear 34 wheel of second Z0axe of rotation of the vortex device Zaaxe virtual rotation of the anchorclaims1. A vortex mechanism for a watch movement, comprising a rocker mechanism (2), an escapement mechanism (3) and a cage (12) mounted in a structure of the watch movement in rotation around a vortex axis ( ZO), the rocker mechanism comprising a spring (14) and a rocker wheel (16) pivotally mounted in the cage about said vortex axis, the exhaust mechanism including an escape wheel (5) with teeth (9) and an anchor (7) comprising pallets (17, 17a, 17b) configured to engage said teeth, the anchor being mounted in the cage and rotatably coupled to the cage by means of a pivoting device (11 ), characterized in that the escape wheel encircles the vortex axis and is fixed or integral with said structure of the watch movement and in that the pivot device is configured for elastic pivoting and support of the anchor.2. Mechanism according to the preceding claim, characterized in that the pivot device comprises one or more elastic arms (21) connecting the anchor to an anchoring zone (12a) fixed to or integral with the cage.3. Mechanism according to the preceding claim, characterized in that the pivot device comprises a pair of said elastic arms.
    [4]
    4. Mechanism according to the preceding claim, characterized in that the pair of elastic arms with the anchoring zone has a substantially triangular shape.
    [5]
    5. Mechanism according to one of the preceding claims, characterized in that the anchor pivots about a virtual axis of rotation (Za) located at the intersection of the neutral fibers of the elastic arms.
    [6]
    6. Mechanism according to one of the preceding claims, characterized in that the teeth of the escape wheel point outwardly of the wheel and the vanes are arranged radially outside the escape wheel and point to inside the wheel.
    [7]
    7. Mechanism according to one of the preceding claims, characterized in that the cage is connected to a power source providing a torque on the cage, the energy source being coupled to the cage by means of a gear train driving (24) meshing with a pinion (32) fixed or secured to the cage.
    [8]
    8. Mechanism according to one of the preceding claims, characterized in that the pivot device or a set of elements integral with the pivot device are formed by deposition or etching processes.
    [9]
    9. Mechanism according to the preceding claim, characterized in that the set of elements integral with the pivot device comprises one or more of the following elements: a part of the anchor or the whole of the anchor; part of the cage or the whole cage; the spring of the balance mechanism.
    [10]
    10. Mechanism according to one of the two preceding claims, characterized in that the pivot device or the set of elements integral with the pivot device form a monolithic structure.
    [11]
    11. Mechanism according to one of the three preceding claims, characterized in that the deposition process comprises an electroforming method of LIGA type.
    [12]
    12. Mechanism according to one of the two preceding claims, characterized in that the pivot device or the set of elements integral with the pivot device are in one or more of the following materials: silicon-based material, Ni, NiP, amorphous metal.
    [13]
    13. Mechanism according to one of the preceding claims, characterized in that the pivot device comprises a bistable mechanism (26).
    [14]
    14. Watch movement comprising a mechanism according to one of the preceding claims.4. Mechanism according to the preceding claim, characterized in that the pair of elastic arms with the anchoring zone has a substantially triangular shape.5. Mechanism according to one of the preceding claims, characterized in that the anchor pivots about a virtual axis of rotation (Za) located at the intersection of the neutral fibers of the elastic arms.6. Mechanism according to one of the preceding claims, characterized in that the teeth of the escape wheel point outwardly of the wheel and the vanes are arranged radially outside the escape wheel and point to inside the wheel.7. Mechanism according to one of the preceding claims, characterized in that the cage is connected to a power source providing a torque on the cage, the energy source being coupled to the cage by means of a gear train driving (24) meshing with a pinion (32) fixed or secured to the cage.8. Mechanism according to one of the preceding claims, characterized in that the pivot device or a set of elements integral with the pivot device are formed by deposition or etching processes.9. Mechanism according to the preceding claim, characterized in that the set of elements integral with the pivot device comprises one or more of the following elements: a part of the anchor or the whole of the anchor; part of the cage or the whole cage; the spring of the balance mechanism.10. Mechanism according to one of the two preceding claims, characterized in that the pivot device or the set of elements integral with the pivot device form a monolithic structure.11. Mechanism according to one of the three preceding claims, characterized in that the deposition process comprises an electroforming method of LIGA type.12. Mechanism according to one of the two preceding claims, characterized in that the pivot device or the set of elements integral with the pivot device are in one or more of the following materials: silicon-based material, Ni, NiP, amorphous metal.13. Mechanism according to one of the preceding claims, characterized in that the pivot device comprises a bistable mechanism (26).14. Watch movement comprising a mechanism according to one of the preceding claims.
    类似技术:
    公开号 | 公开日 | 专利标题
    EP3029530B1|2019-08-14|Tourbillon mechanism
    EP3545365B1|2020-12-16|Flexibly guided rotary resonator maintained by a free escapement with pallets
    EP2246752B1|2012-04-04|Tourbillon without the balance weight.
    EP3182213B2|2020-10-21|Mechanism for adjusting an average speed in a clock movement and clock movement
    WO2008125503A1|2008-10-23|Tourbillon movement for timepiece
    EP2887151B1|2017-10-18|Oscillating element for a clockwork
    EP1918790A2|2008-05-07|Tourbillon for watch movement and movement comprising same
    CH709328B1|2020-03-31|Escapement, timepiece movement and timepiece.
    EP2466397B1|2013-08-21|Rotating clock component with peripheral guide
    CH710487A2|2016-06-15|tourbillon mechanism.
    CH714361A2|2019-05-31|Flexible guided rotary resonator serviced by a free anchor escapement.
    CH716864A2|2021-05-31|Tourbillon for watch movement.
    WO2019179824A1|2019-09-26|Chronograph for a timepiece
    CH711594B1|2021-07-15|Anchor, regulator escapement, tourbillon, movement, and timepiece.
    CH704239A2|2012-06-29|Single block watch making mobile e.g. escape mechanism, for use during movement of mechanical watch, has guide surface located close to plane so as to maintain mobile in recessed or overhang manner, where mobile does not have guide shaft
    同族专利:
    公开号 | 公开日
    CH710487B1|2018-08-31|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CH01863/14A|CH710487B1|2014-12-03|2014-12-03|Tourbillon mechanism for watch movement.|CH01863/14A| CH710487B1|2014-12-03|2014-12-03|Tourbillon mechanism for watch movement.|
    [返回顶部]