EP3158401B1 - Übertragungsvorrichtung für uhr - Google Patents

Übertragungsvorrichtung für uhr Download PDF

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Publication number
EP3158401B1
EP3158401B1 EP15728905.9A EP15728905A EP3158401B1 EP 3158401 B1 EP3158401 B1 EP 3158401B1 EP 15728905 A EP15728905 A EP 15728905A EP 3158401 B1 EP3158401 B1 EP 3158401B1
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EP
European Patent Office
Prior art keywords
ring
transmission device
notably
brake
barrel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP15728905.9A
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English (en)
French (fr)
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EP3158401A1 (de
Inventor
Jean-Louis Bertrand
Pascal Billet
Pierre-Alain Graemiger
Félix GRASSER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rolex SA
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Rolex SA
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Filing date
Publication date
Application filed by Rolex SA filed Critical Rolex SA
Publication of EP3158401A1 publication Critical patent/EP3158401A1/de
Application granted granted Critical
Publication of EP3158401B1 publication Critical patent/EP3158401B1/de
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Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B5/00—Automatic winding up
    • G04B5/02—Automatic winding up by self-winding caused by the movement of the watch
    • G04B5/18—Supports, suspensions or guide arrangements, for oscillating weights
    • 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
    • G04B11/00—Click devices; Stop clicks; Clutches
    • 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
    • G04B5/00—Automatic winding up
    • G04B5/20—Automatic winding up by movements of other objects, e.g. by opening a hand-bag, by opening a case, by opening a door; Winding up by wind power

Definitions

  • the invention relates to a timepiece transmission device as defined by the subject of claim 1. It also relates to a timepiece mechanism comprising such a device. It also relates to a watch movement comprising such a device or such a mechanism. Finally, it relates to a timepiece, in particular a wristwatch, comprising such a device, such a mechanism or such a movement.
  • the invention relates in particular to a unidirectional winding automaton device or an automaton chain.
  • a kinematic chain makes it possible to connect the oscillating mass to the barrel so as to allow the winding of a barrel spring.
  • the kinematic chain between the mass and the barrel is broken by means of a disengagement device so that the rotation of the mass has no effect on the barrel.
  • a known problem with this type of automaton lies in the fact that the oscillating mass can undergo substantial accelerations in the second direction of rotation, which induces parasitic noises as well as risks of premature wear of the automaton elements, in particular during shocks suffered by the wristwatch.
  • a unidirectional connection between the oscillating mass and the barrel can also be established by a free wheel such as a radial clutch with balls or rollers like the one disclosed by the document CH330891 or those of the document CH694025 .
  • a free wheel such as a radial clutch with balls or rollers like the one disclosed by the document CH330891 or those of the document CH694025 .
  • Such clutches comprise inner and outer rings which are capable of being secured in rotation by the wedging of at least one ball or a roller within a cage arranged at the interface of the two rings under the effect or not of a recall couple.
  • the cage consists of at least one part provided with an inclined plane shaped to wedge a ball or a roller.
  • Such a clutch or such a freewheel is represented by way of example on the figures 9a and 9b of this document.
  • Freewheels are commonly coupled and employed for the implementation of bidirectional winding automaton devices such as that disclosed for example by the patent CH694025 , so that it is difficult to achieve a compact PLC architecture.
  • Other known one-way link devices are further disclosed in the documents WO2013/014515 A1 , CH460639A Or CH694025A5 .
  • the object of the invention is to provide a transmission device making it possible to remedy the drawbacks mentioned above and to improve the transmission devices known from the prior art.
  • the invention proposes a timepiece transmission device as defined by the subject of claim 1.
  • a horological device according to the invention is defined by claim 1.
  • a mechanism according to the invention is defined by claims 11 to 17.
  • the timepiece 130 is for example a watch, in particular a wristwatch.
  • the timepiece comprises a timepiece movement 120, for example a mechanical movement.
  • the watch movement includes an automatic winding mechanism 110.
  • the mechanism comprises a winding chain or automaton chain 5 extending from an oscillating mass 30 to a barrel 41, these elements being excluded from the winding chain or automaton chain.
  • the winding chain includes a transmission device 100.
  • the brake can be arranged between the first part of the transmission device and the second part of the transmission device.
  • the brake or a first brake part can be included in the first part of the transmission device or in the second part of the transmission device.
  • the first one-way link device may comprise a freewheel device or a one-way clutch device, in particular a one-way radial clutch.
  • the freewheel device may comprise at least one locking element 1d, in particular at least one locking element of the ball or roller type.
  • the first part may comprise a first ring 1a of the freewheel device, in particular an inner ring of the freewheel device, and the second part may comprise a second ring 1b of the freewheel device, in particular an outer ring of the freewheel device .
  • the brake may in particular comprise an elastic element or spring comprising a first friction zone 29 capable of cooperating with a second friction zone 28 to provide braking by friction.
  • the elasticity or the stiffness of the spring makes it possible to define a force for pressing the first and second friction zones against each other. This plating force combined with the coefficient of friction between the first and second zones makes it possible to define a braking torque.
  • the first and second zones can be two flat or substantially flat surfaces, in particular a flat surface 29 of the spring and a flat surface 28 of the second ring.
  • the spring may comprise an elastic washer, in particular a spring washer, for example of the Belleville type.
  • the spring can be prestressed by the first part and/or by the second part.
  • the braking torque can therefore be defined in order to adequately oppose the mechanical torque produced by the oscillating mass around its axis in the direction of non-winding of the movement.
  • direction of non-winding of the movement we mean a direction of rotation of the oscillating mass for which the kinematic chain between the mass and the barrel is broken in such a way that the rotation of the mass has no effect on the barrel.
  • the oscillating weight can exert, around its axis of rotation, in the absence of acceleration, a maximum torque, that is to say it can exert, around its axis of rotation, a maximum static torque.
  • the braking torque is less than the maximum static torque produced by the oscillating mass so as not to stop the rotation of the mass, and thus favor the performance of the automaton, in particular its winding power.
  • the braking torque can be less than 75% of the maximum static torque, or even less than 70% of the maximum static torque.
  • the braking torque can be greater than 20% of the maximum static torque, or even greater than 25% of the maximum static torque.
  • the braking torque makes it possible to oppose the movement of the oscillating mass 3 in the direction of non-winding of the barrel 41, namely when the rings 1a and 1b are uncoupled.
  • the braking torque can vary, in particular according to the accelerations of the oscillating mass. These accelerations are different according to the users or carriers. To do this, an adjustment mechanism can act on the spring preload.
  • the one-way linkage device comprises a radial ball clutch 1.
  • a clutch technology like roller technology, has the advantage of minimizing the blind spot when changing from a non-winding direction to a direction of winding, ie the angle traveled by the oscillating weight in the direction of winding without winding the barrel just after having moved in the direction opposite to the direction of winding.
  • the clutch 1 comprises an inner ring 1a and an outer ring 1b.
  • a cage 1c for example integral with the inner ring 1a, is provided with various housings 11c in which the blocking elements 1d are housed.
  • the operation of such a clutch is illustrated in the figures 9a and 9b , the clutch being represented in the disengaged state on the figure 9a and the clutch being shown in the engaged state on the figure 9b .
  • the inner 1a and outer 1b rings here have the particularity of being able to be uncoupled by friction through the brake 2.
  • the brake is in contact with the first and second parts, in particular with the first and second rings.
  • the brake is for example added or fixed on the first ring.
  • the spring 2 is secured to the inner ring 1a by means of a first pinion 4 of the automaton chain 5 (or automaton cog chain) which is attached, in particular fully driven in, to the ring 1a, for example on a portion of the outer periphery of the ring 1a.
  • a mass segment 30 of the oscillating mass 3 is fixed, in particular attached, for example riveted, to a portion of the outer ring 1b.
  • the spring is integral at a first end of the inner ring 1a which is engaged with the automaton chain 5, while a second end of the spring bears against the contact surface 28 of the outer ring 1b which is integral with the oscillating weight 3.
  • the geometry, in particular the diameter and the section, of the spring as well as the preload which is applied to it make it possible to define a resistive torque which is sought.
  • the inner ring 1a carries a shaft 6 so as to allow the pivoting of the mass 3 relative to the frame of the movement within, for example, dedicated blanks 31, 32.
  • the automaton chain 5 is driven in rotation under the effect of the pinion 4 and thus allows the winding of the spring 42 of the barrel 41 by means of a ratchet 7
  • the inner ring 1a is driven in rotation under the effect of the outer ring 1b through the balls 1c which are wedged by the cage 1c, in particular by the housings 11c.
  • the spring 2, added or fixed on the inner ring 1a is driven in rotation under the effect of the outer ring 1b. This therefore has no braking effect on the ring 1b.
  • the kinematic chain between the oscillating weight and the barrel is broken using the release device 1 so that the rotation of the mass then has no effect on the barrel.
  • a pawl 8 in particular an elastic pawl 8 of ratchet 7 keeps the automaton chain 5 in position within the sets of gears.
  • the outer ring 1b moves relative to the inner ring 1a, held in position by the pawl 8, through the balls 1c which are free within the housings 11c of the cage 1c. More particularly, the outer ring 1b is uncoupled by friction from the inner ring 1a via the brake 2. The mass 3 and the outer ring 1b can then rotate relative to the inner ring 1a against the resistive torque produced by the friction of the spring 2 on the outer ring 1b.
  • a second embodiment of winding mechanism 310 is described below with reference to the figure 4 And 5 .
  • the numerical references of the elements are defined by the numerical references of the elements of the first mode providing the same functions, numerical references to which we have added 200.
  • the second mode is characterized by the fact that the clutch device 201 and the oscillating mass 203 are carried by a ball bearing 211 on the frame of the movement.
  • the inner ring 201a acts for example as the outer ring 211b of the bearing 211.
  • the inner ring 211a of the bearing 211 is here secured to the frame of the movement by a retaining screw 212a.
  • the principle of operation of this embodiment is identical to that of the previous embodiment, the elastic pawl 208 being provided to maintain the automaton chain 205 in position within the sets of gears during the rotation of the mass in a direction of non-winding of the movement.
  • the mass 203 and the outer ring 201b can rotate relative to the inner ring 201a, 211b against a resistive torque produced by the spring 202.
  • a third embodiment of winding mechanism 510 is described below with reference to the figures 6 to 8 .
  • the reference numerals of the elements are defined by the reference numerals of the elements of the second embodiment providing the same functions, numerical references to which 200 has been added.
  • the third embodiment is characterized in that the ball bearing 211 is replaced by a second radial ball clutch 421.
  • the clutches 401 and 421 are here mounted in opposition.
  • the first clutch 401 makes it possible to establish a unidirectional connection between the oscillating mass 403 and the ratchet 407 according to a first direction of rotation of the oscillating mass 403.
  • the balls 401d are blocked in their housing 411c, while the balls 421d are free in their housing 431c, which makes it possible to establish the rotation of the mass relative to the movement so as to allow the winding of the spring 442 of barrel 441.
  • the balls 421d are blocked in their housing 411c and hold the automaton chain 405 in position and thus provide the same function as a pawl, in particular the elastic pawls 8, 208 of the embodiments previously described.
  • the mass 403 and the outer ring 401b can rotate relative to the inner ring 401a, 421b against a resistive torque produced by the spring 402.
  • Such a configuration advantageously makes it possible to implement a chain of simplified automaton whose dead angle is minimized, in particular an automaton chain devoid of elastic pawl and whose dead angle is minimized.
  • the embodiments shown of automatic winding mechanisms therefore include the oscillating weight, the barrel and the automaton or winding chain connecting the oscillating weight to the barrel.
  • the barrel in particular the barrel ratchet, is linked kinematically to the first part, in particular to the first ring, or to the second part, in particular to the second ring.
  • a pinion, kinematically linked to the barrel, in particular to the barrel ratchet, is attached or fixed to the first part, in particular to the first ring, or to the second part, in particular to the second ring.
  • the mechanism comprises a frame and the second freewheel device 421.
  • the second freewheel device is interposed between the barrel, in particular the barrel ratchet, and the built.
  • the second freewheel device comprises a third ring 421a and a fourth ring 421b.
  • the fourth ring and the first ring 401a can be combined or form one and the same ring.
  • the first and second freewheel devices are of the same type.
  • a pawl is not a brake acting between two parts of a winding chain and is in particular not a brake acting on an oscillating weight of a winding mechanism.
  • the devices which are the subject of the invention implement an element generating a resistive torque which is provided to oppose the oscillating mass in a direction of non-winding of the movement so as to remedy the known defects of the prior art.
  • the devices which are the subject of the invention are particularly advantageous with regard to their simplicity and their compactness.
  • the brake is arranged so as to oppose the relative movement of the first and second parts, while allowing this movement.
  • the brake is not a relative blocking device of the first and second parts.
  • a horological device 500 comprising a barrel 441 of a mechanism 510, a frame 431 and a unidirectional connecting device 421, in particular a clutch device, in particular a freewheel device, between the barrel 441 and the frame 431.
  • the unidirectional link device 421 comprises a first ring 421a and a second ring 421b.
  • the device comprises an automaton chain 405 comprising at least one transmission 405 between the unidirectional link device and the barrel.
  • the device comprises an oscillating mass 403, and the unidirectional link device is arranged coaxially with the oscillating mass.
  • This other aspect of the invention also relates to a mechanism 510 for automatic winding of a watch movement, the mechanism comprising a device as defined above.
  • This other aspect of the invention also relates to a timepiece movement 520, the movement comprising a device as defined above or a mechanism as defined above.
  • This other aspect of the invention also relates to a timepiece 530, the part comprising a device as defined above or a mechanism as defined above or a movement as defined above.
  • freewheel or “freewheel device” does not mean “idle wheel”.
  • the term “freewheel” or “freewheel device” covers a type of unidirectional mechanical link device. In a unidirectional link device, a first part can rotate freely relative to a second part only in a first direction. In a second direction (opposite to the first direction), there is locking of the first part relative to the second part, possibly after a slight angle of displacement of the first part relative to the second part.
  • This angle is a function of the "blind spot" traversed by the oscillating mass in the direction of winding without winding the barrel just after having moved in the direction opposite to the direction of winding.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Braking Arrangements (AREA)
  • Transmission Devices (AREA)
  • One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
  • Measurement Of Unknown Time Intervals (AREA)

Claims (18)

  1. Uhrenübertragungsvorrichtung (100; 300; 500), umfassend:
    - eine erste Vorrichtung zur unidirektionalen Verbindung (1; 201; 401) zwischen einem ersten Teil (1a; 201a; 401a) und einem zweiten Teil (1b; 201b; 401b), die so ausgebildet ist, dass sie in einer ersten Drehrichtung die ersten und zweiten Teile in Bezug aufeinander hemmt, wobei die Vorrichtung zur unidirektionalen Verbindung mindestens ein Hemmelement (1d; 201d; 401d) vom Typ Kugel oder Rolle beinhaltet, und
    - eine Bremse (2; 202; 402), die dazu ausgebildet ist, das erste Teil relativ zum zweiten Teil zu bremsen, wobei sie gleichzeitig das Bewegen in eine zweite Drehrichtung ermöglicht,
    wobei die erste und zweite Drehrichtung entgegengesetzt sind.
  2. Übertragungsvorrichtung nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass der erste Teil einen ersten Ring (1a; 201a; 401a) einer Freilaufvorrichtung umfasst, insbesondere einen Innenring einer Freilaufvorrichtung, und der zweite Teil einen zweiten Ring (1b; 201b; 401b) einer Freilaufvorrichtung umfasst, insbesondere einen Außenring einer Freilaufvorrichtung.
  3. Übertragungsvorrichtung nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die Bremse in Kontakt mit den ersten und zweiten Teilen ist, insbesondere mit den ersten und zweiten Ringen.
  4. Übertragungsvorrichtung nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass die Bremse an dem Ring angebracht oder befestigt ist.
  5. Übertragungsvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Bremse (2; 202; 402) so ausgebildet ist, dass sie auf eine Fläche (28; 228; 428) des zweiten Teils wirkt, insbesondere auf eine plane Fläche (28; 228; 428) des zweiten Teils, oder auf eine Fläche des zweiten Rings, insbesondere auf eine plane Fläche (28; 228; 428) des zweiten Rings.
  6. Übertragungsvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Bremse eine Feder (2; 202; 402) umfasst, insbesondere eine Federscheibe (2; 202; 402).
  7. Übertragungsvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Bremse durch das erste Teil und/oder das zweite Teil vorgespannt wird.
  8. Übertragungsvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Vorrichtung eine Uhrenübertragungsvorrichtung für eine Automatenkette eines Uhrwerks ist.
  9. Übertragungsvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die erste Vorrichtung zur unidirektionalen Verbindung eine erste Freilaufvorrichtung ist.
  10. Übertragungsvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Bremse dazu ausgebildet ist, den ersten Teil relativ zu dem zweiten Teil durch Reibung zu bremsen.
  11. Automatischer Aufzugsmechanismus (110; 310; 510) eines Uhrwerks, umfassend eine Schwungmasse (30; 230; 430), ein Federhaus (41; 241; 441) und eine Automatenkette (5; 205; 405), wobei die Automatenkette eine Übertragungsvorrichtung (100; 300; 500) nach einem der vorhergehenden Ansprüche umfasst.
  12. Aufzugsmechanismus nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die Schwungmasse an dem ersten Teil angebracht oder befestigt ist, insbesondere an dem ersten Ring, oder an dem zweiten Teil, insbesondere an dem zweiten Ring.
  13. Aufzugsmechanismus nach Anspruch 11 oder 12, dadurch gekennzeichnet, dass ein Zahnrad (4; 204; 404), das kinematisch mit dem Federhaus (41; 241; 441) verbunden ist, insbesondere mit dem Federhaussperrrad (7; 207; 407), an dem ersten Teil angebracht oder befestigt ist, insbesondere an dem ersten Ring, oder an dem zweiten Teil, insbesondere an dem zweiten Ring.
  14. Aufzugsmechanismus nach einem der Ansprüche 11 bis 13, dadurch gekennzeichnet, dass das Federhaus, insbesondere das Federhaussperrrad, kinematisch mit dem ersten Teil verbunden ist, insbesondere mit dem ersten Ring, oder mit dem zweiten Teil, insbesondere mit dem zweiten Ring.
  15. Aufzugsmechanismus nach einem der Ansprüche 11 bis 14, dadurch gekennzeichnet, dass er ein Gestell (431) und eine zweite Vorrichtung zur unidirektionalen Verbindung (421) umfasst, wobei die zweite Vorrichtung zur unidirektionalen Verbindung zwischen das Federhaus, insbesondere das Federhaussperrrad, und das Gestell gesetzt ist, wobei die zweite Vorrichtung zur unidirektionalen Verbindung einen dritten Ring (421a) und einen vierten Ring (421b) umfasst.
  16. Aufzugsmechanismus nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass ein und derselbe Ring die ersten und vierten Ringe bildet.
  17. Uhrwerk (120; 320; 520), umfassend eine Vorrichtung (100; 300; 500) nach einem der Ansprüche 1 bis 10 und/oder einen Mechanismus (110; 310; 510) nach einem der Ansprüche 11 bis 16.
  18. Uhr (130; 330; 530), insbesondere Automatikarmbanduhr, umfassend eine Vorrichtung (100; 300; 500) nach einem der Ansprüche 1 bis 10 und/oder einen Mechanismus (110; 310; 510) nach einem der Ansprüche 11 bis 16 und/oder ein Uhrwerk (120; 320; 520) nach dem vorhergehenden Anspruch.
EP15728905.9A 2014-06-19 2015-06-17 Übertragungsvorrichtung für uhr Active EP3158401B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP14173119 2014-06-19
PCT/EP2015/063649 WO2015193400A1 (fr) 2014-06-19 2015-06-17 Dispositif horloger de transmission

Publications (2)

Publication Number Publication Date
EP3158401A1 EP3158401A1 (de) 2017-04-26
EP3158401B1 true EP3158401B1 (de) 2023-08-30

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EP15728905.9A Active EP3158401B1 (de) 2014-06-19 2015-06-17 Übertragungsvorrichtung für uhr

Country Status (5)

Country Link
US (1) US10261471B2 (de)
EP (1) EP3158401B1 (de)
JP (1) JP6667459B2 (de)
CN (1) CN106662838B (de)
WO (1) WO2015193400A1 (de)

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CH712163A1 (fr) * 2016-02-16 2017-08-31 Mps Micro Prec Systems Ag Roulement à billes et système d'accouplement comportant un tel roulement à billes.
EP3361324A1 (de) 2017-02-13 2018-08-15 Rolex Sa Steckverschlusssystem für uhr
EP3407143A1 (de) * 2017-05-24 2018-11-28 Rolex Sa Mechanische verbindungsvorrichtung
EP3547043B1 (de) * 2018-03-26 2021-02-17 Montres Breguet S.A. Korrekturmechanismus der uhranzeige
DE102018113535B4 (de) * 2018-06-06 2023-03-09 Lange Uhren Gmbh Antriebseinrichtung
CN112904703B (zh) * 2021-01-21 2022-06-21 维沃移动通信有限公司 可穿戴设备

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JPS50157963U (de) * 1974-06-17 1975-12-27
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CH694025A5 (fr) * 2000-03-17 2004-06-15 Soprod S A Dispositif d'accouplement pour transformer un mouvement de rotation dans les deux sens en un mouvement dans un sens.
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CH460639A (fr) * 1965-09-28 1968-09-30 Enicar S A Pièce d'horlogerie à remontage automatique
JPS50157963U (de) * 1974-06-17 1975-12-27
EP0482443B1 (de) * 1990-10-22 1994-07-13 Eta SA Fabriques d'Ebauches Bremsungsvorrichtung für ein Zahnrad
CH694025A5 (fr) * 2000-03-17 2004-06-15 Soprod S A Dispositif d'accouplement pour transformer un mouvement de rotation dans les deux sens en un mouvement dans un sens.
WO2013014515A1 (fr) * 2011-07-28 2013-01-31 Celsius X Vi Ii Mobile d'embrayage

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EP3158401A1 (de) 2017-04-26
CN106662838B (zh) 2020-08-04
WO2015193400A1 (fr) 2015-12-23
US20170123376A1 (en) 2017-05-04
US10261471B2 (en) 2019-04-16
JP6667459B2 (ja) 2020-03-18
JP2017518507A (ja) 2017-07-06
CN106662838A (zh) 2017-05-10

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