EP3032347B1 - Dispositif de remontage mécanique pour une montre - Google Patents

Dispositif de remontage mécanique pour une montre Download PDF

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Publication number
EP3032347B1
EP3032347B1 EP14197193.7A EP14197193A EP3032347B1 EP 3032347 B1 EP3032347 B1 EP 3032347B1 EP 14197193 A EP14197193 A EP 14197193A EP 3032347 B1 EP3032347 B1 EP 3032347B1
Authority
EP
European Patent Office
Prior art keywords
bearing
winding device
automatic winding
rotation
balls
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
EP14197193.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3032347A1 (fr
Inventor
Sylvain Maréchal
Benoît Junod
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.)
Montres Breguet SA
Original Assignee
Montres Breguet SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Montres Breguet SA filed Critical Montres Breguet SA
Priority to EP14197193.7A priority Critical patent/EP3032347B1/fr
Priority to US14/937,996 priority patent/US9400488B2/en
Priority to JP2015228602A priority patent/JP6100875B2/ja
Priority to CN201510900450.0A priority patent/CN105700323B/zh
Publication of EP3032347A1 publication Critical patent/EP3032347A1/fr
Priority to HK16114155A priority patent/HK1225815B/zh
Application granted granted Critical
Publication of EP3032347B1 publication Critical patent/EP3032347B1/fr
Active legal-status Critical Current
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
    • G04B11/00—Click devices; Stop clicks; Clutches
    • G04B11/001—Clutch mechanism between two rotating members with transfer of movement in both directions, possibly with limitation on the transfer of power
    • G04B11/003—Clutch mechanism between two rotating members with transfer of movement in both directions, possibly with limitation on the transfer of power with friction member, e.g. with spring action
    • 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
    • G04B5/19—Suspension of the oscillating weight at its centre of rotation
    • 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
    • G04B11/02—Devices allowing the motion of a rotatable part in only one direction
    • G04B11/028—Devices allowing the motion of a rotatable part in only one direction with friction member, e.g. click spring
    • 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
    • G04B5/10—Automatic winding up by self-winding caused by the movement of the watch by oscillating weights the movement of which is not limited
    • G04B5/12—Automatic winding up by self-winding caused by the movement of the watch by oscillating weights the movement of which is not limited acting in one direction only
    • 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
    • G04B5/24—Protecting means preventing overwinding

Definitions

  • the invention relates to a device for automatic winding of a motor means of a watch movement.
  • Watch movements require motor means to provide energy to a set of mechanisms for providing at least one time indication.
  • these means comprise a battery which supplies either electro-optical display means or one or more electric motors for driving analog display members.
  • the invention relates to self-winding watch movements using an oscillating mass.
  • the oscillating mass may, depending on the mechanism with which it is associated, either arm the spring using energy that the mass produces only in one direction of rotation, or in both directions of rotation.
  • the object of the invention is in particular automatic winding mechanisms whose oscillating weight arms the spring in a single direction of rotation.
  • the oscillating mass is mounted guided in rotation on an axis with an unbalance.
  • this oscillating mass moves in a first direction of rotation, said arming direction, it drives a gear train that arms a barrel spring.
  • this oscillating mass no longer acts on the transmission train of the spring, it is free in rotation.
  • the mass returns to its equilibrium point thanks to the unbalance after several oscillations which allowed it to arm the spring each time it moved in the direction of the arming.
  • the oscillating mass is generally suspended above the movement by means of a ball bearing having an outer ring, a core or inner ring, between which is disposed a ball cage, a screw fixing the inner ring on the movement.
  • the movement of the arm of the wearer of the watch can cause a rotation in one or other of the directions of rotation of the mass.
  • energy is recovered in only one of the two directions of rotation of the oscillating weight.
  • the transmission gear train ensuring the gear meshes with the outer race ring.
  • the mass drives a gear train, its speed of rotation is slowed compared to its speed when it rotates in the free direction.
  • the rolling noise in the winding direction is therefore relatively low.
  • the mass rotates at a higher speed which produces an increased rolling noise which is not desirable especially for high-end watches.
  • the problem is therefore to reduce the noise when the oscillating mass moves in the opposite direction to the winding direction.
  • the main purpose of the invention is therefore to overcome the aforementioned drawbacks as well as others by providing an automatic winding device which makes it possible to limit the noise during rotation of the mass in the free direction while ensuring safe operation. mass even in case of shocks.
  • the subject of the invention is a device for automatic winding of a mainspring of a watch movement comprising a mass fixed on a support via at least one bearing comprising a ring which drives, in a single direction of rotation. said winding direction, a transmission train for arming the mainspring, this winding device being characterized in that, on the one hand, the bearing is of the unidirectional type and blocks the rotation of the mass in the opposite direction to the direction of arming, said locking direction and in that, on the other hand, the device comprises a means for uncoupling the mass of said bearing in at least the locking direction when the mass exerts on the bearing a torque greater than a value setpoint to allow the mass to rotate at least in the blocking direction.
  • the mass rotates only in one direction, namely the direction of arming, so that the noise related to the rotation in the free direction became blocking direction is removed.
  • the rotation of the mass is made possible to avoid high stresses that can lead to damage to the bearing.
  • This device 2 comprises a mass 1 fixed to rotation on a support formed for example by the watch movement plate via a bearing 3.
  • the mass 1 is rotatably suspended above the back of the watch movement by means of the bearing 3.
  • 3 comprises an outer ring 4 which causes, in a single direction of rotation, said arming direction shown by the arrow Fa to figures (1 and 2 ), a gear train or gear (not shown) for transmitting the rotational movement of the oscillating mass 1 to the barrel ratchet (not shown) and arm the barrel spring (not shown).
  • the bearing 3 further comprises an inner core or ring 5, a plurality of balls 3a distributed in a cage 6 arranged between the outer ring 4 and the core 5.
  • the bearing 3 is of the unidirectional type and blocks the rotation of the mass in the opposite direction of the armature, said blocking direction Fb.
  • the device comprises a means 7 for uncoupling the mass 1 of the bearing 3dans at least the blocking direction Fb when the mass 1 exerts a torque greater than a set value on the ring integral with the mass 1 to allow the mass to rotate at least in the blocking direction.
  • This arrangement therefore allows the mass 1 to rotate in the direction F of arming. Therefore the noise that this mass makes when it circulates in the locking direction (which before, was free in rotation) is eliminated.
  • this solution poses a problem because the mass is rotated by the movement of the arm of the wearer of the watch and when this movement causes the mass to move in the locking direction Fb and the energy produced by this movement is too much important, this energy must be partially dissipated at risk of damaging the bearing 3. Therefore when this energy exceeds a predetermined threshold, the mass 1 can still flow in the blocking direction Fb.
  • the means 7 for disconnecting the core or inner ring 5 from the outer ring via the cage 6 avoids this degradation because beyond a threshold, the energy accumulated by the mass 1 can then be dissipated by relative rotation of the core 5 by set the outer ring 4 in the mass locking direction 1.
  • the ball cage 6 is designed to leave free in rotation, relative to the core 5, the outer ring 4 when it rotates in the direction of arming Fa and block the rotation of the outer ring 4 in the opposite direction of rotation said locking direction (represented by the arrow Fb to Figures 1 and 2 ).
  • Blocking the rotation in the blocking direction means that the outer ring 4 engages with the core 5 via the balls 3a and as the core 5 is integral with the support, the mass 1 is thus immobilized in this direction.
  • Mass 1 rotates only in one direction (anti-clockwise on the drawings figure 1 and 2 ) so do not make noise in the other direction.
  • the winding direction is a clockwise rotation.
  • the cage 6 is formed of a ring 8 having notches 9 at its circumference. These notches have a slightly greater depth than the balls 3a to accommodate the thickness of each ball 3a. These notches 9 each extend in the plane of the bearing by a ramp 10 which is inclined with respect to a tangent to the ring 8 and rises towards the periphery thereof so that (here clockwise) figure 1 and 2 ) the ball 3a establishes a wedging between the two rings in one of the two directions of rotation.
  • the means 7 of uncoupling can be mounted between the core 5 and the outer ring 4 ( figures 1 , 3 and 4 ) or between the mass 1 and the bearing 3 ( figures 2 , 5 and 6 ) that is to say the outer ring.
  • This means of uncoupling is intended to counter strong acceleration during a shock (for example: force developed by a tennis player who engages).
  • the setpoint of the torque is determined by friction forces or elastic forces.
  • this unidirectional bearing 3 is modified to integrate a means 7 of uncoupling to avoid harmful effects when the mass 1 is subjected to a strong impulse (shock) tending to rotate in the direction Fb blocking.
  • the bearing comprises a means 7 for uncoupling at least indirectly the oscillating mass 1 of the core 5 in the locking direction when the mass exerts a torque greater than a set value.
  • the automatic winding device comprises a "two-stage" bearing formed by at least three rings A, B, C mounted concentrically with, on the one hand, between two rings (A and B for the figure 1 and B and C for the figure 2 ), a connection R for a unidirectional rotation allowing the rotation of the mass in one direction that of the arming and, secondly, between two other rings (B and C for the figure 1 and B and A for the figure 2 ) a disengageable connection W in response to a force greater than a setpoint.
  • This disengageable link W is therefore, in one embodiment ( Figures 3a, 3b ), consisting of rolling elements such as balls 23a, or rollers between two tracks, one of the tracks having cavities 70, the other track also having cavities 71 that can be elastically deformed to let the rolling elements out of their tracks. cavities and allow rotation in the usual blocking direction.
  • the means 7 of uncoupling only acts in the blocking direction (anti-clockwise direction).
  • the means 7 is disposed between the cage 6 and the core 5.
  • the uncoupling means acts in both directions of rotation.
  • the use of the means 7 for uncoupling in the winding direction may be useful when the spring is fully armed.
  • This device makes it possible to use a fixed flange instead of a slippery flange in self-winding movements.
  • the means 7 for uncoupling therefore comprises rolling elements such as balls establishing a mechanical connection with two rings (C and B figure 1 or A and B figure 2 ) concentric each having a means 70, 71 for retaining a fraction of the rolling element, the means 71 for retaining one of the rings inoperative beyond a resistant torque exceeding a set value.
  • Each ball cooperates with two means 70, 71 retained, one 70 belonging to a ring (C figure 3b and 4b ) and the other 71 to another ring (B figures 3b , 4b ) so that the rotation of one bearing drives the other bearing.
  • the retaining means of one of the rings are, for example modified by deformation, the rolling elements no longer lead to one of the rings (the cavities 71 are deformed).
  • the Figures 3a and 3b show in front view and in section, a solution according to the arrangement of the figure 1 .
  • the device comprises between the core 5 and the unidirectional bearing 3, balls 23a able to circulate in a ball cage 23.
  • the cage 23 is formed of a part 230 integral in rotation with the core 5 and another complementary part 231 integral with rotation of the bearing 3.
  • the balls 23a establish a mechanical connection between the complementary parts 230 and 231 of the cage.
  • This cage has four guide faces 230a, 230b, 231a, 231b forming a tunnel.
  • the balls 23a are held spaced from each other in the cage by means of notches 60.
  • One 231 b of its guide faces is laterally movable to release the balls 23a from the notches and thus to disengage the two parts 230, 231 from the cage and allow a sliding rotation of the bearing 3 relative to the core 5 in the blocking direction.
  • the ball cage 23 which has four guide faces 230a, 230b, 231a, 231b forming a tunnel, has one 231b of its movable faces to temporarily increase the tunnel section.
  • the faces 230a and 230b form the cavities 70 or the retaining means 70, the faces 231a and 231b form the deformable cavities 71.
  • the diverging guiding face 231b is provided by an elastic blade 25 in the coupled position on the figure 3 .
  • the uncoupled position is not shown but in the drawing of the sectional view, it is sufficient to move the left end of the spring 25 upwards so that the ball can roll.
  • the solution is different from that of figure 3 in that the diverging guiding face 231b is formed by a solid part 26 held in position by an elastic blade 27 called a foil spring.
  • the figure 5a or 5b shows a technical solution according to the figure 2 .
  • the means 7 for uncoupling comprises a set of balls 31 housed in a ball separator 31 located between the unidirectional bearing 3 and the mass.
  • the balls 31 are biased by a spring 33 developing a radial thrust which holds them in radial cavities 32 arranged in an inner cylindrical surface 1 a of the mass 1 or in an inner cylindrical surface of a ring integral with the mass 1.
  • the oscillating mass is guided in rotation by external bearings 50.
  • the figure 6 can be likened to that of the figure 5 , we find the inner ring or core 5, the outer ring 4 concentric to the inner ring with its cage 6 ball 3a.
  • the means 7 for uncoupling is a spring means 37 housed in a circular groove and wedged in rotation with the bearing 3, which spring means comprises at least one tongue 38 bearing elastically radially on at least indirectly the mass 1, the tongue carrying a surface radial friction along its length (face turned outwards).
  • the elastic tongue may have a shape 40 at its end which is wedged in a notch 41 which completes the friction effect. It is planned on the figure 6a two tabs 38 opposite.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Rolling Contact Bearings (AREA)
  • Support Of The Bearing (AREA)
  • Electromechanical Clocks (AREA)
EP14197193.7A 2014-12-10 2014-12-10 Dispositif de remontage mécanique pour une montre Active EP3032347B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP14197193.7A EP3032347B1 (fr) 2014-12-10 2014-12-10 Dispositif de remontage mécanique pour une montre
US14/937,996 US9400488B2 (en) 2014-12-10 2015-11-11 Mechanical winding device for a watch
JP2015228602A JP6100875B2 (ja) 2014-12-10 2015-11-24 時計のための機械式巻上げデバイス
CN201510900450.0A CN105700323B (zh) 2014-12-10 2015-12-09 用于手表的机械上条装置
HK16114155A HK1225815B (zh) 2014-12-10 2016-12-13 用於手錶的機械上條裝置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14197193.7A EP3032347B1 (fr) 2014-12-10 2014-12-10 Dispositif de remontage mécanique pour une montre

Publications (2)

Publication Number Publication Date
EP3032347A1 EP3032347A1 (fr) 2016-06-15
EP3032347B1 true EP3032347B1 (fr) 2017-06-14

Family

ID=52013967

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14197193.7A Active EP3032347B1 (fr) 2014-12-10 2014-12-10 Dispositif de remontage mécanique pour une montre

Country Status (5)

Country Link
US (1) US9400488B2 (zh)
EP (1) EP3032347B1 (zh)
JP (1) JP6100875B2 (zh)
CN (1) CN105700323B (zh)
HK (1) HK1225815B (zh)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6667459B2 (ja) * 2014-06-19 2020-03-18 ロレックス・ソシエテ・アノニムＲｏｌｅｘ Ｓａ 時計伝達装置
EP3220206B1 (fr) * 2016-03-16 2020-09-30 Rolex Sa Dispositif horloger de transmission
US9851695B1 (en) * 2016-11-14 2017-12-26 Geoffrey H. H. Roth Watch bezel assembly
CN107422626B (zh) * 2017-09-13 2022-10-11 杭州正驰达精密机械有限公司 一种自动锤的转轴定位结构
EP3460586B1 (fr) * 2017-09-22 2022-04-06 Montres Breguet S.A. Dispositif pour remonter et / ou immobiliser un chronomètre de marine
EP3547043B1 (fr) * 2018-03-26 2021-02-17 Montres Breguet S.A. Mécanisme correcteur d'affichage d'horlogerie
EP3772673B1 (fr) 2019-08-08 2022-04-06 ETA SA Manufacture Horlogère Suisse Élément d'indexation d'horlogerie
CN111665706B (zh) * 2020-07-03 2021-03-30 郑君雄 一种自动上弦且可以受到震动发出警报的老人手表

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH328136A (de) * 1954-09-14 1958-02-28 Felsa Ag Uhrwerk mit einer eine arretierbare Masse aufweisenden automatischen Aufzugvorrichtung
US3019595A (en) * 1957-08-20 1962-02-06 Murrle Kurt Inertia wound watch with overwind preventer
US2988869A (en) * 1958-03-26 1961-06-20 Buren Watch Company S A Self-winding watch
CH460639A (fr) * 1965-09-28 1968-09-30 Enicar S A Pièce d'horlogerie à remontage automatique
CH516829A (fr) * 1968-12-04 1971-08-13 Sandoz & Cie Bezzola & Kocher Mécanisme de sûreté pour dispositif de remontage de montre automatique
CH508906A (fr) * 1968-12-23 1971-02-15 Movado Montres Montre à remontage automatique
KR950001429Y1 (ko) * 1988-01-25 1995-03-06 세이꼬 엡슨 가부시끼가이샤 발전장치 부착 전자 팔목시계
CH692874A5 (fr) * 1997-11-20 2002-11-29 Ebauchesfabrik Eta Ag Instrument de petit volume muni d'un dispositif de limitation de la puissance mécanique fournie par une masse oscillante.
DE69919509T2 (de) * 1999-04-23 2005-09-01 Rolex Sa Uhrwerk mit Schwungmassen-Selbstaufzug
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.
EP1918789B1 (fr) * 2006-10-31 2008-12-24 The Swatch Group Management Services AG Masse oscillante pour recharger la source d'énergie d'un instrument portable

Also Published As

Publication number Publication date
US20160170373A1 (en) 2016-06-16
US9400488B2 (en) 2016-07-26
CN105700323B (zh) 2018-05-18
HK1225815B (zh) 2017-09-15
JP2016114599A (ja) 2016-06-23
CN105700323A (zh) 2016-06-22
EP3032347A1 (fr) 2016-06-15
JP6100875B2 (ja) 2017-03-22

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