EP3106927A2 - Gangreserveanzeige für uhr - Google Patents

Gangreserveanzeige für uhr Download PDF

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Publication number
EP3106927A2
EP3106927A2 EP16165724.2A EP16165724A EP3106927A2 EP 3106927 A2 EP3106927 A2 EP 3106927A2 EP 16165724 A EP16165724 A EP 16165724A EP 3106927 A2 EP3106927 A2 EP 3106927A2
Authority
EP
European Patent Office
Prior art keywords
differential
ratchet
shaft
board
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.)
Granted
Application number
EP16165724.2A
Other languages
English (en)
French (fr)
Other versions
EP3106927B1 (de
EP3106927A3 (de
Inventor
Matthäus Friedli
Florent Strahm
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.)
ETA SA Manufacture Horlogere Suisse
Original Assignee
ETA SA Manufacture Horlogere Suisse
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 ETA SA Manufacture Horlogere Suisse filed Critical ETA SA Manufacture Horlogere Suisse
Publication of EP3106927A2 publication Critical patent/EP3106927A2/de
Publication of EP3106927A3 publication Critical patent/EP3106927A3/de
Application granted granted Critical
Publication of EP3106927B1 publication Critical patent/EP3106927B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C10/00—Arrangements of electric power supplies in time pieces
    • G04C10/04—Arrangements of electric power supplies in time pieces with means for indicating the condition of the power supply
    • 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
    • G04B9/00—Supervision of the state of winding, e.g. indicating the amount of winding
    • 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
    • G04B1/00—Driving mechanisms
    • G04B1/10—Driving mechanisms with mainspring
    • G04B1/18—Constructions for connecting the ends of the mainsprings with the barrel or the arbor
    • 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
    • G04B13/00—Gearwork
    • G04B13/007—Gearwork with differential work
    • G04B13/008—Differentials
    • 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
    • G04B9/00—Supervision of the state of winding, e.g. indicating the amount of winding
    • G04B9/005—Supervision of the state of winding, e.g. indicating the amount of winding by optical indication of the amount of winding

Definitions

  • the invention relates to a clockwork motor comprising a barrel, pivoting about a shaft, enclosing a spring mounted between said barrel and said shaft, which carries pivotally a driving ratchet of said shaft, said motor having a differential of which a first input is driven indirectly by said ratchet and a second input is said drum, and whose output is a pivoting output wheel, coaxial with said shaft, arranged to constitute or drive a power reserve indicator, and wherein said differential comprises balls driving housing of said basket-shaped output wheel, and cooperating with an upper surface of said cylinder and with a lower surface, which is disposed on the side of said upper surface of said drum, with a differential board, which board is arranged to pivot on said shaft, coaxial with it, and is connected to said ratchet or a plate by means of friction, and which constitutes said first input.
  • the invention also relates to a power reserve indicator mechanism for displaying the power reserve of a clockwork motor comprising a drum consisting of a drum provided with a toothing and a lid enclosing a spring together. mounted between, on the one hand, said barrel and, on the other hand, a barrel shaft around which said barrel rotates, said barrel shaft bearing and pivotally attached to a transmission ratch outside said barrel and facing said lid, or respectively drum audit.
  • the invention further relates to a differential subassembly arranged to be mounted on a clock tree.
  • the invention also relates to a watch movement comprising at least one such motor, and / or at least one such power reserve indicator mechanism.
  • the invention also relates to a watch, or timepiece, comprising at least one such motor, and / or at least one such power reserve indicator mechanism.
  • the invention relates to the field of mechanical timepieces, particularly watches, comprising as energy source at least one spring-loaded cylinder engine.
  • the invention relates to the display complication of the available power reserve.
  • the power reserve indication of a mechanical watch, powered by one or more barrels, is a useful complication for the user.
  • the document EP1970778 on behalf of WATCHES BREGUET SA describes a power reserve indicator comprising a planetary differential gear, of rather complex execution, of which a first input is connected to the barrel shaft, a second input to the barrel, and an output to an indicator power reserve.
  • the frame of the differential gear is coaxial with the barrel shaft, the second input being integral with the barrel cover.
  • the output is a ring gear, which is kinematically connected to the first input by satellites meshing with each other, and which are carried by the cover.
  • the document DE1015747 in the name of FELSA AG describes a similar differential, with first input is connected to the barrel shaft via a gear, a second input to the barrel, and a differential output at an output wheel which comprises housing balls or rollers interposed between the barrel and the last mobile of this cog.
  • the invention proposes to provide a power-reserve display device that is easy to perform by transforming an existing mechanical movement that is inexpensive and consumes the minimum of space.
  • the invention relates to a clockwork motor according to claim 1.
  • the invention further relates to a power reserve indicator mechanism according to claim 6.
  • the invention further relates to a removable single-piece differential mounting unit according to claim 16.
  • the invention also relates to a watch movement comprising at least one such motor, and / or at least one such power reserve indicator mechanism.
  • the invention also relates to a watch, or timepiece, comprising at least one such motor, and / or at least one such power reserve indicator mechanism.
  • the invention relates to a power reserve display device for a mechanical timepiece, in particular a watch, comprising at least one energy source constituted by a spring-loaded barrel.
  • Patent applications of the same applicant, CH01102 / 14 and EP14177775.5 describe a power-reserve indicator for displaying the power-reserve indication of a plurality of energy accumulators each comprising an indicator cooperating with an input of a differential mechanism that this indicator comprises. power reserve, and an output of this differential mechanism cooperates with a display mechanism of the total power reserve of the plurality of energy accumulators, at least two of the inputs are coaxial.
  • the differential comprises a hub driving a carrier disc, which carries balls in contact with both a first input tray and a second input tray, which are mounted idle on this hub, under the action of friction imposed by one or more springs.
  • the hub is still secured to an outlet in the form of a wheel which meshes with a return plate that comprises an input mobile, pivoting about another fourth pivot axis, this board being coaxial and pivotally integral.
  • a pinion that attacks an entry board of a power reserve display mechanism, coaxial and integral in pivoting of a shaft arranged to carry a display element such as needle, disk, or the like.
  • the invention described below relates to different objects according to a common inventive step: an engine comprising a barrel, an additional mechanism designed for the cheaper conversion of such an engine to add the power reserve display function, or an autonomous power reserve mechanism comprising such an engine.
  • the invention in a first variant, relates to a clockwork motor comprising a barrel.
  • This barrel is of conventional type, pivoting about a shaft 11, enclosing a spring mounted between the barrel and the shaft 11, which carries pivotally a ratchet 21 for driving the shaft.
  • the engine 10 comprises a differential 20, coaxial with the barrel along the axis D of pivoting of the barrel which is also the axis of the shaft 11, and a first input is driven indirectly by the ratchet 21, and a second input is the barrel.
  • the output of this differential 20 is a pivoting output wheel 23, coaxial with the shaft 11, which is arranged, or to constitute a power reserve indicator, or to drive a power reserve indicator mechanism 50, in particular and not limited to a gear train 51 or the like.
  • this differential 20 comprises balls 25, which cooperate with an upper surface 13 of the barrel and with a lower surface 26 of a differential board 22.
  • This board of differential 22 is arranged to pivot on the shaft 11, is coaxial with it, and is connected to the ratchet 21 by a friction means 24, and which constitutes the first input.
  • These balls 25 cause in their rotation of the housing that includes the output wheel 23 basket.
  • This lower surface 26 is disposed on the side of the upper surface of the barrel.
  • the barrel conventionally consists of a drum 14 provided with a toothing and a lid 12 enclosing the spring together.
  • the ratchet 21 faces the lid 12 as visible in the figures, or respectively to the drum 14.
  • the first entry for the arming is driven indirectly by the ratchet 21 and the second entry for disarming is constituted by the cover 12, or respectively by the drum 14. And the balls 25 cooperate, on the one hand with an upper surface 13 of the cover 12, or respectively of the drum 14, and secondly with the lower surface 26 of the differential board 22.
  • the friction means 24 is a spring disposed between the ratchet 21 and the differential wheel 22.
  • the invention in a second variant, relates to a power reserve indicator mechanism 100 for displaying the power reserve of a clockwork motor comprising a barrel consisting of a drum 14 provided with a toothing and a a cover 12 enclosing together a spring mounted between on the one hand the barrel and on the other hand a barrel shaft 11 around which the barrel rotates, the barrel shaft 11 being load-bearing and pivotally integral with a transmission ratchet 21 outside the barrel and facing the lid 12, or drum 14.
  • This is an additional mechanism, it is sufficient to add to an existing barrel assembly if it is predisposed (by adequate machining of the barrel).
  • the power reserve indicator mechanism 100 can integrate a motor 10 as described above.
  • the transmission of movement of the ratchet 21 to the differential wheel 22 requires compliance with the direction of pivoting, and may require a gear ratio or reduction: due to the principle of differential ball is a reduction in a gear report of 2.
  • the power reserve indicator mechanism 100 comprises a plate 2, which carries the motor 10. And this plate 2 carries a differential drive gear 30 meshing with the ratchet 21 and with a differential gear wheel 40 that carries also the plate 2 and which meshes with the differential board 22.
  • the differential drive gear train 30 comprises a differential drive gear 32, which carries a differential gear 31, which meshes directly with the ratchet 21.
  • the toothing 33 of the differential drive gear 32 intermesh with the teeth 42 a differential wheel return 41.
  • the power reserve indicator mechanism 100 includes a plate 2 carrying the motor 10:
  • This plate comprises at least two pivots 60, each carrying a pinion 61 having a toothing 62 meshes, on the one hand with an external toothing that comprises the differential board 22, and secondly with an internal toothing 210 that includes a ratchet 21.
  • This fourth variant planetary gearing is, however, more expensive than the third variant with intermediate gear wheels.
  • the figure 5 illustrates, in a very simplified manner, to the extent that most of the components it comprises are similar to those set out above, another fifth advantageous variant, because reducing the axial size, in which the ratchet 21 directly forms the lid of the barrel, and there is naturally a game (not shown in the figure) between the ratchet 21 and the drum 14. The balls 25 then cooperate with an upper surface of the drum 14.
  • This ratchet 21 has a toothing 211, which attacks the differential board via an ad hoc cogwheel.
  • the toothing 211 cooperates with a first toothing 72 of a ratchet 71, a second gear 73 of which engages a toothing 75 of a reversing gear 74 which also meshes with the toothing 220 of the differential board 22.
  • the means friction 24 then takes direct support on a plate 2.
  • the driving of the train by the drum 14 of the cylinder must then be done in another peripheral zone of the barrel.
  • the figure 6 illustrates a sixth variant, comprising a differential subassembly 50 removable in one block.
  • This differential subassembly 50 is entirely assembled on a first shoulder ring 51, arranged to be mounted axially free on a bearing 112 of the shaft 11 on which it is threaded.
  • a first outer shoulder 52 of this first shoulder ring 51 carries the output wheel 23 of the differential free to pivot relative to the first shoulder ring 51.
  • the outlet wheel 23 forming a basket comprises, in housings 231, balls 25 which cooperate with the upper surface 13 of the drum 12 of the barrel, and with the lower surface 26 of a differential board 22.
  • these housings 231 are made with a narrowing at their lower orifice, the side facing the drum 12, so as to handle the subassembly 50 equipped without losing the balls 50. This shrinkage can be obtained during the stamping of the output wheel 23, or still be achieved by a light matte or the like.
  • the differential board 22 is mounted which is already driven on a second shoulder ring 56, abutting on a second outer shoulder 58 that includes this second shoulder ring 56.
  • This second shoulder ring 56 is free to pivot on the first shoulder ring 51, in particular in the non-limiting embodiment of the figure 6 a bore 57 of the second shoulder ring 56 pivots freely on an outer bearing surface 54 that includes the first shoulder ring 51.
  • the second shoulder ring 56 and the differential board 22 are also possible to realize in a single component the second shoulder ring 56 and the differential board 22, the important thing being to separate sufficiently the ratchet 21 teeth of that of the differential board 22.
  • the second shoulder ring 56 allows above all to use a plate 22 after stamping, much less expensive than a machined wheel.
  • the differential board 22 bears on the balls 25.
  • the differential subassembly 50 is finally capped by the ratchet 21 which is driven on the first shoulder ring 51, and bears on an upper bearing face 58 of the second shoulder ring 56.
  • the differential subassembly 50 can be handled in one piece, and be returned if necessary, in particular by a robotic mounting means.
  • the shaft 11 advantageously comprises drive means 111, represented in a nonlimiting manner on the figure 8 by plates, arranged to cooperate with complementary drive means 511 that includes the first shoulder ring 51, as visible on the figure 7 , for their driving in pivoting one by the other, and for the reassembly of the engine 10.
  • this pivoting drive can be achieved by any means known to those skilled in the art, directly or indirectly through a key or the like.
  • the invention also relates to such an independent differential subassembly 50, arranged to be mounted on a clockwork shaft 11, that it constitutes a removable subassembly in a single block and comprises a first shoulder ring 51, arranged to be freely mounted.
  • first shoulder ring 51 carries, coaxial, an output wheel 23 mounted free to pivot relative to the first shoulder ring 51, this output wheel 23 constituting a basket for a plurality of balls protruding at a lower end of said differential subset 50 and arranged to roll on a surface of revolution of a mobile or barrel, this first shoulder ring 51 carrying, directly or indirectly, a differential board 22 also free to pivot on the first shoulder ring 51 and mounted in friction support on the balls 25 on the opposite side at their projecting end at the lower end, and a ratchet 21 being driven on the first shoulder ring 51 so as to frictionally drive the differential board 22 .
  • the invention also relates to a watch movement 200 comprising at least one such motor 10, and / or at least one such power reserve indicator mechanism 100.
  • the invention also relates to a watch 300, or timepiece, comprising at least one such motor 10, and / or at least one such power reserve indicator mechanism 100.
  • the cover (or drum, depending on the arrangement) of the barrel is directly used as an entrance for disarming.
  • the output wheel 23 of the differential can not be directly driven through the transmission ratchet 21, in fact, the latter rotating in the same direction as the barrel, the output of the differential would rotate only in one direction.
  • a gear train is integrated to change the direction of pivoting.
  • the transmission ratchet integral with the barrel shaft, drives the differential board through a simple kinematics, in particular a gear train, with the interposition of an inverter to make up the correct direction of rotation: this is the object of the third and fourth variants, respectively double wheel, and planetary gear, which is a little more expensive but less cumbersome than the previous one. Overall gain of space remains, whatever the chosen solution, important compared to the prior art.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transmission Devices (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
  • Measurement Of Distances Traversed On The Ground (AREA)
  • Electromechanical Clocks (AREA)
  • Gears, Cams (AREA)
EP16165724.2A 2015-05-29 2016-04-18 Gangreserveanzeige für uhr Active EP3106927B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15169914.7A EP3098668B1 (de) 2015-05-29 2015-05-29 Gangreserveanzeige für uhr

Publications (3)

Publication Number Publication Date
EP3106927A2 true EP3106927A2 (de) 2016-12-21
EP3106927A3 EP3106927A3 (de) 2017-04-19
EP3106927B1 EP3106927B1 (de) 2020-06-03

Family

ID=53269358

Family Applications (2)

Application Number Title Priority Date Filing Date
EP15169914.7A Active EP3098668B1 (de) 2015-05-29 2015-05-29 Gangreserveanzeige für uhr
EP16165724.2A Active EP3106927B1 (de) 2015-05-29 2016-04-18 Gangreserveanzeige für uhr

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP15169914.7A Active EP3098668B1 (de) 2015-05-29 2015-05-29 Gangreserveanzeige für uhr

Country Status (4)

Country Link
US (1) US9971311B2 (de)
EP (2) EP3098668B1 (de)
JP (1) JP6196706B2 (de)
CN (2) CN106200341B (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3098668B1 (de) * 2015-05-29 2018-10-31 ETA SA Manufacture Horlogère Suisse Gangreserveanzeige für uhr
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
EP3627233B1 (de) 2018-09-19 2022-03-30 ETA SA Manufacture Horlogère Suisse Anzeigemechanismus der gangreserve einer uhr
JP7347103B2 (ja) * 2019-10-16 2023-09-20 セイコーエプソン株式会社 時計
EP4057080A1 (de) * 2021-03-09 2022-09-14 ETA SA Manufacture Horlogère Suisse Anzeigevorrichtung einer uhr auf mehreren mobilgeräten

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH110214A (de) 1924-06-17 1925-05-16 Knorr Bremse Ag Ubergangskupplung für Eisenbahn-Fahrzeuge.
DE1015747B (de) 1952-12-08 1957-09-12 Felsa A G Differentialgetriebe fuer die UEberwachung der Federspannung in Uhren
EP1970778A1 (de) 2007-03-13 2008-09-17 Montres Breguet S.A. Uhr mit Anzeige der Gangreserve

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US790509A (en) * 1904-08-16 1905-05-23 Joseph Mazer Watch.
US1173466A (en) * 1914-04-18 1916-02-29 Charles Teske Winding-index for indicator mechanism for timepieces, musical and other mechanisms.
US2443558A (en) * 1945-07-05 1948-06-15 Carl U Frennesen Mainspring tension indicator for watches and similar mechanisms
US2698066A (en) * 1952-07-18 1954-12-28 Elgin Nat Watch Co Power reserve indicator
US2774252A (en) * 1954-09-04 1956-12-18 Felsa S A Differential gear
JPH07261251A (ja) * 1994-03-23 1995-10-13 Olympus Optical Co Ltd 差動伝達手段を有するカメラ
EP1944662A1 (de) * 2007-01-15 2008-07-16 Vaucher Manufacture Fleurier SA Stundenschlagwerk
CH701173B1 (fr) * 2007-05-25 2010-12-15 Mps Micro Prec Systems Ag Différentiel à billes, notamment pour un indicateur de réserve de marche d'un mouvement horloger mécanique.
EP2264551B1 (de) * 2009-06-16 2013-08-07 Samep S.A. - Montres Emile Pequignet Differentialzahnradgetriebe für Uhrwerk
CN202837824U (zh) * 2012-07-20 2013-03-27 天津海鸥表业集团有限公司 手表发条能量显示机构
EP2977828B1 (de) * 2014-07-21 2017-08-30 ETA SA Manufacture Horlogère Suisse Anzeige der Gangreserve einer Uhr
EP3098668B1 (de) * 2015-05-29 2018-10-31 ETA SA Manufacture Horlogère Suisse Gangreserveanzeige für uhr

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH110214A (de) 1924-06-17 1925-05-16 Knorr Bremse Ag Ubergangskupplung für Eisenbahn-Fahrzeuge.
DE1015747B (de) 1952-12-08 1957-09-12 Felsa A G Differentialgetriebe fuer die UEberwachung der Federspannung in Uhren
EP1970778A1 (de) 2007-03-13 2008-09-17 Montres Breguet S.A. Uhr mit Anzeige der Gangreserve

Also Published As

Publication number Publication date
EP3106927B1 (de) 2020-06-03
JP2016224043A (ja) 2016-12-28
CN205827081U (zh) 2016-12-21
CN106200341A (zh) 2016-12-07
EP3098668B1 (de) 2018-10-31
JP6196706B2 (ja) 2017-09-13
CN106200341B (zh) 2018-10-02
US20160349709A1 (en) 2016-12-01
EP3106927A3 (de) 2017-04-19
EP3098668A1 (de) 2016-11-30
US9971311B2 (en) 2018-05-15

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