• 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:
    Constant force clocking mechanism (1) comprising energy storage means (2) arranged to deliver energy in the form of an output torque, through a transmission train (3), an escapement wheel (4) forming an exhaust mechanism (10) with a resonator wheel (5) subjected to the torque of a return means (6), this escapement wheel (4) co-operating with the movable resonator (5), either directly or through a stop (7), the escapement mechanism (10) being arranged to operate when the escapement mobile (4) receives a torque greater than or equal to one maintenance torque specific to the exhaust mechanism (10), and the transmission train (3) comprises a torque regulating means (30) arranged to deliver to the mobile escapement (4) a constant torque.
    公开号:CH712463A2
    申请号:CH01423/16
    申请日:2016-10-25
    公开日:2017-10-31
    发明作者:Conus Thierry；Di Domenico Gianni；Favre Jérôme；Hinaux Baptiste；Léchot Dominique
    申请人:Swatch Group Res & Dev Ltd；
    IPC主号:
    专利说明:

    Description
    Field of the Invention [0001] The invention relates to a clockwork movement comprising a regulating mechanism which comprises a resonator mechanism and an escape mechanism, said movement comprising at least one energy storage means and / or a cylinder arranged to deliver energy in the form of an output torque, through a transmission train, to an escapement mobile that includes said exhaust mechanism, and said resonator mechanism comprising a resonator mobile, subject the pair of at least one elastic return means, and which is arranged to cooperate with said exhaust mobile, either directly or through a stop.
    The invention also relates to a watch comprising such a watch movement.
    The invention relates to the field of watchmaking mechanisms, and more particularly constant force escapement mechanisms.
    BACKGROUND OF THE INVENTION [0004] A mechanical clockwork movement is conventionally a compromise that best grants an energy producer, who is not always isochronous, and a consumer of energy, which is a factor of loss. not insignificant.
    [0005] A traditional Swiss anchor escape mechanism has a yield of typically 35% or even 40% at best. In such an escapement, the interaction between the escape wheel and the anchor, in the usual case of steel teeth on ruby pallets, generates considerable friction, and adversely affects the efficiency of the escapement.
    [0006] EP 13 199 427 in the name of SWATCH GROUP RESEARCH & DEVELOPMENT Ltd replaces this mechanical interaction with magnetic forces using magnets in repulsion, which greatly minimizes friction losses.
    However, the efficiency is intrinsically related to the level of torque provided by the energy producer, usually a barrel, because of the design of the anchor escapement. Indeed, it is an escapement with constant force, that is to say that it theoretically always provides the same energy to the resonator. A variable amount of excess energy is dissipated in your rebounds of the escape wheel. The higher the input torque to the escape wheel, the higher the total power delivered by the barrel, which makes the escape wheel bounce longer. This phenomenon results in a decrease in the efficiency of the exhaust when the torque at the escape wheel is high.
    At low torque, the rebound share of the wheel is low. The efficiency of the exhaust is high, much higher than that of a traditional Swiss anchor escapement.
    [0009] At high torque, the part of the rebounds of the wheel is high. The efficiency of the exhaust is lower than low torque, and returns to a level comparable to that of a traditional Swiss lever escapement.
    In order to better regulate the movement, it is advantageous to provide a constant energy level to the escapement mobile, and also to provide a constant energy level to the mobile of the resonator. SUMMARY OF THE INVENTION [0011] The invention proposes to overcome the torque variations due to the gear train, and consequently to benefit from a constant amplitude, while minimizing the energy loss by clipping. While guaranteeing the supply of a constant energy level to the escapement mobile, and also to the mobile of the resonator, and thus optimizing respectively the efficiency and the isochronism, the power reserve of the movement is logically increased. .
    For this purpose, the invention relates to a clock control mechanism according to claim 1.
    The invention also relates to a watch comprising such a movement.
    BRIEF DESCRIPTION OF THE DRAWINGS [0014] Other features and advantages of the invention will appear on reading the detailed description which follows, with reference to the appended drawings, in which: FIG. 1 is a graph showing the variation, as a function of time, of the torque supplied over time to a constant force escapement by a traditional barrel and wheel: FIG. 2 is a block diagram illustrating symbolically the cooperation of a system providing a constant torque, a cog, a constant force escapement, and a resonator; fig. 3 is a graph similar to FIG. 1, representing, in the case of the invention, the variation, as a function of time, of the torque supplied to a constant force escapement by a constant force system and a traditional wheel; fig. 4 is a diagrammatic plan view of a non-limiting example of a constant-force system with a chain rocket; fig. 5 is a diagrammatic perspective view of another non-limiting example of a constant-force system with a chain rocket; fig. 6 shows schematically and in plan, a non-limiting example of a cog according to the invention, similar to that of FIG. 5, and where a gear reducer is interposed between a cylinder and a drum carrying the chain; fig. 7 illustrates an escapement mechanism comprising a two-part anchor hinged with a bis-table blade arranged to accumulate the energy and restore it instantaneously; fig. 8 is a block diagram showing a watch comprising a movement according to the invention, without a stop between the escapement mobile and the resonator mobile; fig. 9 is a block diagram showing a watch comprising a movement according to the invention, comprising a stop between the escapement mobile and the resonator mobile.
    DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS To optimize both the isochronism and the power reserve of a mechanical clockwork movement, the invention combines a constant force transmission, for example but not limited to rocket type. -chaîne, with any constant force regulating device, for example but not limited to a bistable escapement mechanism or a winding equalizer.
    The invention thus optimizes the use of energy from the energy source, in particular a barrel, by operating a constant force escapement mechanism to the nearest value of the maintenance torque. minimum to ensure the operation, and where the yield is the highest. It is further proposed to maintain this constant minimum torque for as long as possible, using a torque control mechanism entering the constant-force escapement car, in particular by using a rocket-chain transmission. .
    It is useful to remember that the concept "constant force" designates, depending on the use case, two different things: - on the one hand at the beginning of the gear, as a rocket-chain device, - secondly at the end of the gear, like a bistable anchor or a winding of equality.
    It is known that the torque provided by a traditional cylinder to any exhaust is not constant, it decreases over time. In addition, the transmission train adds rapid variations that can be significant.
    An escapement at constant force therefore receives a torque that varies over time, as illustrated in FIG. 1, which shows the decrease of the torque supplied to a constant force escapement by a traditional barrel and a cog. Because of the imperfections of the gear, the torque varies between two envelope curves Cr min and Cr max. The shaded area represents the energy El lost in the exhaust by shock or friction. The system stops when the torque is lower than Cstopl, which limits the power reserve to t1, whereas it would be t2 if the gear was perfect, that is to say if it did not create Torque variations supplied to the exhaust. Excess energy is dissipated in shocks or friction.
    The invention combines a constant force transmission, rocket-chain type or the like, with any constant-force regulator device, according to FIG. 2, which shows the cooperation of a system providing a constant torque from a power source 2, a gear train 3, a constant force escapement mechanism 10, and a resonator 1.
    The fact of combining, upstream a system providing a constant torque, and downstream a constant force escapement mechanism may, prima facie, appear redundant.
    However it is not, because this combination solves several problems of the prior art, particularly the recurring problem of torque variations due to the workings, which have the property to stop the movement too early, while minimizing the energy lost by clipping.
    An escapement at constant force then receives a constant torque over time, as illustrated in FIG. 3, which represents the torque supplied to a constant force escapement by a constant-force system, of rocket-chain type or the like, and a traditional wheel according to the invention. Because of the imperfections of the gear, the torque varies randomly between the envelope curves Cr min and Cr max, which are this time substantially horizontal lines, and no longer decreasing curves. The shaded area represents the energy E2 lost in the exhaust by shocks or friction. The system stops when the torque is lower than Cstop2, after a power reserve t. If the difference "a" between the pair Cr min and Cstop2 is minimized, the energy lost in the shocks E2 can be significantly lower than the value E1 of the prior art illustrated in FIG. 2. The energy of the barrel is better used and the power reserve is increased.
    Different embodiments are possible, with any combination of a system providing a constant torque with any constant force escapement.
    More particularly, a rocket-chain system as illustrated in FIG. 4, according to the teachings of patent EP2735919 in the name of MONTRES BREGUET, provides a constant torque. The chain can be replaced by a belt, or other.
    Fig. 3 5 Also illustrates a rocket-chain system according to the teachings of the patent application EP 16 159 798.8 in the name of THE SWATCH GROUP RESEARCH & DEVELOPMENT LTD.
    FIG. 6 shows a variant with the interposition of a gear reduction gear 31 between the barrel 20 and the gear train, with a drum 21 carrying the chain 9.
    More particularly, a constant force escapement system may comprise a bistable anchor, always restoring the same amount of energy, as shown in FIG. 7 corresponding to the patent application EP 2 706 416 A1 in the name of NIVAROX-FAR SA.
    More particularly, and as visible in your figures, (Invention concerns a watch movement 200 comprising a regulator mechanism 100 which comprises at least one resonator mechanism 1 and an exhaust mechanism 10. The invention is illustrated in FIG. the non-limiting case of a single resonator and a single escape mechanism.
    This movement 200 comprises at least one energy storage means 2, or / and a cylinder 20, which is arranged to deliver energy in the form of an output torque, through a gear train. transmission 3, to an escape wheel 4 that includes this exhaust mechanism 10.
    The resonator mechanism 1 comprises a mobile resonator 5, subjected to the torque of at least one elastic return means 8, and which is arranged to cooperate with the mobile exhaust 4, either directly or through a stop 7, including an anchor.
    The resonator mobile 5 and the return means 6 are here illustrated, non-limitingly, respectively in the form of a balance and a spiral.
    According to the invention, the regulator mechanism 100 is a constant-force mechanism, and the exhaust mechanism 10 is a constant-force escapement mechanism, which is arranged to operate when the escapement mobile 4 receives a torque greater than or equal to a maintenance torque specific to the escapement mechanism 10 with constant force.
    The exhaust mechanism 10 comprises for this purpose intermediate mechanical means 50 of accumulation and energy restoration, for the transmission to the mobile resonator 5 pulses constant amount of energy.
    And the gear train 3 comprises a torque control means 30, which is arranged to deliver to the mobile exhaust 4 a constant torque.
    This constant torque is preferably between 1.0 and 2.0 times the maintenance torque, more particularly between 1.0 and 1.5 times the maintenance torque, more particularly between 1.0 and 1.2 times the maintenance torque, and the as close as possible to this maintenance torque, depending on the torque-consuming complications, and the structure of the finishing gear. This pair corresponds to self-starting and canceling rebounds.
    In a particular embodiment illustrated by FIGS. 4 to 6, the torque regulating means 30 comprises a fuse 8 with a continuously variable cross section of which a chain 9 wound by a drum 21 driven by the energy storage means 2 or / and a cylinder 20 is unrolled.
    In a particular embodiment, the intermediate means 50 for accumulating and restoring energy, or comprise at least one flexible bistable blade which is arranged to accumulate energy up to a constant level, at the limits of instability, and retransmitting it instantly and in its entirety before starting to accumulate energy again, or comprise at least one intermediate elastic return means, such as a secondary spring, or a trigger, which is rearmed periodically by energy storage means 2 or / and a cylinder 20.
    In particular in the variant of FIG. 7, these intermediate means 50 for accumulating and restoring energy comprise at least one bistable flexible blade 55, which is arranged to accumulate energy up to a constant level, at the limits of the instability, and to retransmit it instantly and in full before starting to accumulate energy again. More particularly, the regulating mechanism 100 comprises a stopper 7, which comprises at least one such flexible bistable blade 55.
    In another variant, the intermediate means 50 for accumulating and restoring energy comprise at least one intermediate elastic return means, which is rearmed periodically by energy storage means 2 and / or a barrel 20 .
    权利要求:
    Claims (12)
    [1]
    In another variant, the intermediate means 50 of accumulation and energy restoration comprise at least a first mobile meshing directly or indirectly with such energy storage means 2 or / and a cylinder 20, and a second mobile meshing directly or indirectly with the regulating mechanism 100, the second mobile being freely pivotable relative to the first mobile to which an intermediate elastic return means brings it to a stop and drive position. More particularly, the regulator mechanism 100 comprises a stopper 7, and an intermediate elastic return means generating the constant force, is mounted on this stop 7. In another variant, the regulator mechanism 100 comprises a winding equalizer for regulating the torque transmitted to the escapement mechanism 10, comprising such an intermediate elastic return means, which is mounted on the axis of the escapement wheel 4. In another variant, the transmission train 3 comprises a reduction gear train, which is arranged to convert the output torque into an intermediate torque, less than the output torque, at the input of the torque control means 30. [0044] More particularly, the energy storage means 2 comprises at least one barrel 20. The invention then optimally uses the entire energy of the barrel, which no longer rotates at a constant speed, since its tangential speed instantaneous total depends on the instantaneous winding radius of the chain 9 on the rocket 8. In a particular application, the escape mechanism 10 is a constant-force mechanism as described in the patent application EP 2 977 830 in the name of Nivarox-FAR SA. In a particular application, the exhaust mechanism 10 is a constant force expansion mechanism, more particularly as described in the patent application EP 15 188 481.8-1503 in the name of Montres Breguet SA. In a particular application, the exhaust mechanism 10 is an equal winding mechanism. In another particular application, the exhaust mechanism 10 is a bis-table escapement mechanism. More particularly, this 10bistable exhaust mechanism comprises a bistable flexible anchor, for example according to the teachings of EP 2 706 416 B1 in the name of The Swatch Group Research & Development Ltd. The invention also relates to a watch 1000 comprising such a watch movement 200. FIGS. 8 and 9 schematically the overall arrangement, respectively in a variant without stop, and in a variant with stopper. In short, the invention makes it possible to obtain a mechanical clockwork movement, with regulator and exhaust mechanism, with a double controlled energy flow rate. The high value of the efficiency, which has become constant, increases the power reserve by more than 50% compared to a traditional Swiss anchor configuration, for a given barrel, resonator and control power. For the user, this means that the watch can stay longer without being reassembled or rearmed. The invention combines the isochronism and regularity of the clean exhaust mechanism with constant force, with a notable energy saving. claims
    A watch movement (200) comprising a regulating mechanism (100) comprising a resonator mechanism (1) and an escape mechanism (10), said movement (200) comprising at least one energy storage means ( 2) or / and a barrel (20) arranged to deliver energy in the form of an output torque, through a transmission train (3), to an escape wheel (4) that comprises said exhaust mechanism (10), and said resonator mechanism (1) comprising a resonator mobile (5), subjected to the torque of at least one elastic return means (6), and which is arranged to cooperate with said mobile exhaust (4), either directly or through a stop (7), characterized in that said regulating mechanism (100) is a constant-force mechanism, in that said exhaust mechanism (10) is a constant force escapement mechanism which is arranged to operate when said movable exhaust (4) receives a torque greater than or equal to a maintenance torque specific to said escapement mechanism (10) with constant force, and for this purpose comprises intermediate means (50) for mechanical accumulation and energy recovery for transmitting to said mobile resonator (5) pulses with constant energy quantity, and characterized in that said transmission train (3) comprises a torque control means (30) arranged to deliver to said mobile escape (4) a constant torque.
    [2]
    2. Movement (200) according to claim 1, characterized in that said torque regulating means (30) is arranged to deliver said exhaust mobile (4) a constant torque between 1.0 and 2.0 times said maintenance torque .
    [3]
    3. Movement (200) according to claim 1 or 2, characterized in that said torque regulating means (30) comprises a fuze (8) with a continuously variable section which unwinds a chain (9) wound by a drum (21). ) driven by said energy storage means (2) or / and a said barrel (20).
    [4]
    4. Movement (200) according to one of claims 1 to 3, characterized in that said intermediate means (50) of accumulation and energy restoration, or comprise at least one flexible bistable blade (55) arranged to accumulate energy up to a constant level, at the limits of instability, and retransmit instantly and in its entirety before starting to accumulate energy, or comprise at least one intermediate resilient return means reset periodically by said energy storage means (2) and / or said barrel (20).
    [5]
    5. Movement (200) according to claim 4, characterized in that said intermediate means (50) for accumulation and energy restoration comprise at least one flexible bistable blade (55) arranged to accumulate energy up to a constant level, at the limits of instability, and retransmit instantly and in its entirety before starting to accumulate energy.
    [6]
    6. Movement (200) according to one of claims 1 to 5, characterized in that said regulating mechanism (100) comprises a said stop (7) which comprises at least one flexible bistable blade (55) arranged to accumulate. the energy to a constant level, to the limits of instability, and retransmit it instantly and in its entirety before starting to accumulate energy again.
    [7]
    7. Movement (200) according to one of claims 1 to 6, characterized in that said intermediate means (50) of accumulation and energy restoration comprise at least one intermediate resilient return means reset periodically by a said means energy storage (2) or / and a said cylinder (20).
    [8]
    8. Movement (200) according to claim 7, characterized in that said intermediate means (50) for accumulating and restoring energy comprise at least a first mobile (51) meshing directly or indirectly with a said storage means. energy (2) or / and a said cylinder (20), and a second mobile (52) meshing directly or indirectly with said regulating mechanism (100), said second mobile (52) being free to pivot relative to said first mobile ( 51) to which an intermediate resilient biasing means (53) returns it to a stop and drive position.
    [9]
    9. Movement (200) according to claim 7 or 8, characterized in that the regulating mechanism (100) comprises a said stop (7), and in that a said intermediate elastic return means generating said constant force is mounted on said stop (7).
    [10]
    10. Movement (200) according to one of claims 7 to 9, characterized in that the regulating mechanism (100) comprises a winding equal regulation of the torque transmitted to said exhaust mechanism (10), comprising a said means intermediate elastic return member mounted on the axis of said escapement (4).
    [11]
    11. Movement (200) according to one of claims 1 to 10, characterized in that said transmission train (3) comprises a gear reducer arranged to convert said output torque into a lower intermediate torque to said output torque, to input of said torque regulating means (30).
    [12]
    12. Watch (1000) comprising a watch movement (200) according to one of claims 1 to 11.
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    同族专利:
    公开号 | 公开日
    CH712463B1|2020-08-14|
    CH712205A2|2017-09-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    CN110398893A|2018-04-25|2019-11-01|斯沃奇集团研究和开发有限公司|Clock and watch speed adjusting gear with hinged resonator|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CH00318/16A|CH712205A2|2016-03-11|2016-03-11|Watchmaker mechanism with magnetic escapement.|
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