EP3106927B1 - Gangreserveanzeige für uhr - Google Patents

Gangreserveanzeige für uhr Download PDF

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Publication number
EP3106927B1
EP3106927B1 EP16165724.2A EP16165724A EP3106927B1 EP 3106927 B1 EP3106927 B1 EP 3106927B1 EP 16165724 A EP16165724 A EP 16165724A EP 3106927 B1 EP3106927 B1 EP 3106927B1
Authority
EP
European Patent Office
Prior art keywords
differential
barrel
plate
arbor
ratchet wheel
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
EP16165724.2A
Other languages
English (en)
French (fr)
Other versions
EP3106927A2 (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
    • 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
    • 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
    • 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 around a shaft, enclosing a spring mounted between said barrel and said shaft, which pivotally bears a ratchet for driving said shaft, said motor comprising a differential, a first input is driven indirectly by said ratchet and a second input of which is said drum, and the output of which is a pivoting output wheel, coaxial with said shaft, arranged to constitute or drive a power reserve indicator, and where said differential comprises balls arranged to drive housings of said output wheel forming a basket, and cooperating with an upper surface of said barrel and with a lower surface, which is arranged on the side of said upper surface of said drum, of a differential board, which board is arranged to pivot on said shaft, coaxial with it, and is connected to said ratchet by a friction means, and which constitutes the adite first entry.
  • the invention also relates to a timepiece movement comprising at least one such motor.
  • the invention also relates to a watch, or timepiece, comprising at least one such motor, and / or at least one such movement.
  • the invention relates to the field of mechanical timepieces, in particular watches, comprising as energy source at least one spring barrel motor.
  • the invention relates to the complication of displaying the available power reserve.
  • the indication of the power reserve of a mechanical watch, supplied with energy by one or more barrels, is a useful complication for the user.
  • the document EP1970778 in the name of MONTRES 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 inlet being secured to the barrel cover.
  • the output is a crown with internal teeth, which is kinematically connected to the first input by satellites in engagement with each other, and which are carried by the cover.
  • the document DE1015747 on behalf of FELSA AG describes a similar differential, with first input is connected to the barrel shaft via a gear train, a second input to the barrel, and a differential output at an output wheel which comprises housings of balls or rollers interposed between the barrel and the last mobile of this train.
  • the invention proposes to provide a power reserve display device which is easy to produce by transforming an existing mechanical movement, inexpensive, and consuming the minimum of space.
  • the invention relates to a timepiece motor according to claim 1.
  • the invention also relates to a timepiece movement comprising at least one such motor.
  • the invention also relates to a watch, or timepiece, comprising at least one such motor, and / or at least one such movement.
  • 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 barrel.
  • CH709904 and EP2977828 describe a clockwork 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 including an output of this differential mechanism cooperates with a mechanism for displaying the total power reserve of the plurality of energy accumulators, at least two of the inputs of which are coaxial.
  • the differential comprises a hub driving a carrier disc, which carries balls in contact with both a first input plate and a second input plate, which are idly mounted on this hub, under the action of friction imposed by one or more springs.
  • the hub is also integral with an outlet in the form of a wheel which meshes with a deflection plate which has an input mobile, pivoting around another fourth pivot axis, this plate being coaxial and pivotally integral of a pinion which attacks an input board of a power reserve display mechanism, coaxial and pivotally attached to a shaft arranged to carry a display element such as a needle, disc, or the like.
  • the invention described below relates to various objects according to a common inventive step: an engine comprising a barrel, an additional mechanism designed for the transformation at low cost of such an engine to add to it the power reserve display function, or an autonomous power reserve mechanism comprising such a motor.
  • the invention relates to a clockwork motor 10 comprising a barrel.
  • This barrel is of conventional type, pivoting around a shaft 11, enclosing a spring mounted between the barrel and the shaft 11, which pivotally bears a ratchet 21 for driving the shaft.
  • the motor 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 of which a first inlet is driven indirectly by the ratchet 21, and of which a second inlet is the barrel.
  • the output of this differential 20 is a pivoting output wheel 23, coaxial with the shaft 11, which is arranged, either to constitute a power reserve indicator, or else to drive a power reserve indicator mechanism 100, in particular and not limitatively by means of a gear train or the like.
  • this differential 20 comprises balls 25, which cooperate with a surface upper 13 of the barrel and with a lower surface 26 of a differential board 22.
  • This differential board 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 is the first entry.
  • These balls 25 cause in their rotation of the housings that comprises the output wheel 23 forming 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 teeth and a cover 12 enclosing the spring together.
  • the ratchet 21 faces the cover 12 as visible in the figures, or respectively to the drum 14.
  • the first entry for winding 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 of the drum 14 respectively, and on the other hand 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 10 comprising a barrel consisting of a drum 14 provided with toothing and d '' 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 pivots, the barrel shaft 11 being load-bearing and pivotally attached to a transmission ratchet 21 outside the barrel and facing the cover 12, or respectively to the drum 14.
  • the power reserve indicator mechanism 100 can integrate a motor 10 as described above.
  • the transmission of movement from the ratchet 21 to the differential wheel 22 requires compliance with the direction of pivoting, and may require a reduction or reduction ratio: due to the principle of ball differential it is a reduction in one ratio of 2.
  • the power reserve indicator mechanism 100 comprises a plate 2, which carries the motor 10. And this plate 2 carries a gear train for the differential drive 30 meshing with the ratchet 21 and with a gear train for the differential gear 40 that carries also the plate 2 and which meshes with the differential board 22.
  • the differential drive return gear 30 comprises a differential drive return gear 32, which carries a differential drive return 31, which meshes directly with the ratchet 21.
  • the toothing 33 of the differential drive return gear 32 meshes with the toothing 42 d '' a differential wheel return 41.
  • the power reserve indicator mechanism 100 comprises a plate 2 carrying the motor 10:
  • This plate comprises at least two pivots 60, each carrying a idler gear 61 of which a toothing 62 meshes, on the one hand with an external toothing which comprises the differential plate 22, and on the other hand with an internal toothing 210 which comprises a ratchet 21.
  • This embodiment with planetary gear train is, however, more expensive than the third variant with intermediate reinforcement cogs.
  • the figure 5 illustrates, in a very simplified manner, insofar as most of the components which it comprises are similar to those set out above, another embodiment not forming part of the invention but close to the invention, but advantageous because reducing the axial size, in which the ratchet 21 directly forms the cover of the barrel, and there is naturally a clearance (not shown in the figure) between this 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 by means of an ad hoc train.
  • the toothing 211 cooperates with a first toothing 72 of a ratchet gear 71, of which a second toothing 73 attacks 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 bears directly on a plate 2.
  • the drive train by the drum 14 of the barrel must then be done in another peripheral zone of the barrel.
  • the figure 6 illustrates another variant, according to the invention, comprising a differential sub-assembly 50 removable in a single block.
  • This differential sub-assembly 50 is entirely assembled on a first shouldered ring 51, arranged to be mounted axially free on a bearing 112 of the shaft 11 on which it is threaded.
  • a first external shoulder 52 of this first shouldered ring 51 carries the output wheel 23 of the differential, free to pivot relative to the first shouldered ring 51.
  • the output 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 produced with a constriction at their lower orifice, on the side facing the drum 12, so as to be able to handle the sub-assembly 50 fitted without losing the balls 25. This constriction can be obtained during stamping of the output wheel 23, or else be produced by a light matting or the like.
  • the differential board is mounted 22 which is already driven out on a second shouldered ring 56, in abutment on a second external shoulder 58 which comprises this second shouldered ring 56.
  • This second shouldered ring 56 is free to pivot on the first shouldered ring 51, in particular in the non-embodiment limiting of the figure 6 a bore 57 of the second shouldered ring 56 pivots freely on an external bearing 54 which comprises the first shouldered ring 51.
  • the second shouldered ring 56 and the differential board 22 can also be produced in a single component, the important thing being to sufficiently separate the toothing of the ratchet 21 from that of the differential board 22.
  • the second shouldered ring 56 allows above all to use a board 22 from stamping, much less expensive than a machined wheel.
  • the differential board 22 is supported on the balls 25.
  • the differential sub-assembly 50 is finally capped by the ratchet 21 which is driven out on the first shouldered ring 51, and in abutment on an upper bearing face 58 of the second shouldered ring 56.
  • the differential sub-assembly 50 can be manipulated in one piece, and be returned if necessary, in particular by a robotic mounting means.
  • the shaft 11 advantageously comprises drive means 111, shown in a nonlimiting manner on the figure 8 by dishes, arranged to cooperate with complementary drive means 511 that comprises the first shouldered ring 51, as visible on the figure 7 , for their pivoting drive one by the other, and for reassembling the motor 10.
  • this pivoting drive can be carried out by any means known to those skilled in the art, directly or even indirectly via a key or the like.
  • the invention also relates to such an independent differential sub-assembly 50, arranged to be mounted on a clockwork shaft 11, which constitutes a removable sub-assembly in a single block and comprises a first shouldered ring 51, arranged to be mounted free axially on a span of a shaft 11 and integral in pivoting with this shaft 11, which first shoulder ring 51 carries, coaxially, an output wheel 23 mounted to pivot freely relative to the first shoulder ring 51, this output wheel 23 constituting a basket for a plurality of balls 25 projecting from a lower end of said differential sub-assembly 50 and arranged to roll on a surface of revolution of a mobile or of a barrel, this first shouldered ring 51 carrying, directly or indirectly, a differential board 22 also free to pivot on the first shouldered ring 51 and mounted as a friction bearing on the balls 25 on the side opposite their projecting end at the lower end, and a ratchet 21 being driven out on the first shouldered ring 51 so as to frictionally drive the differential
  • the invention also relates to a timepiece 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 gain in height compared to a standard differential is significant.
  • the cover (or the drum, depending on the arrangement) of the barrel acts directly as an entry for disarming.
  • the output wheel 23 of the differential cannot 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 only rotate in one direction.
  • a gear train is incorporated to change the direction of pivoting.
  • the transmission ratchet integral with the barrel shaft, drives the differential plate through simple kinematics, in particular a gear train, with the interposition of an inverter to make up for the correct direction of pivoting: this is the object of the third variant with double gear train.
  • the overall space saving remains, whatever the solution chosen, significant compared to the prior art.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
  • Transmission Devices (AREA)
  • Gears, Cams (AREA)
  • Measurement Of Distances Traversed On The Ground (AREA)
  • Electromechanical Clocks (AREA)

Claims (5)

  1. Uhrenantrieb (10), umfassend ein Federhaus, das um eine Welle (11) schwenkbar ist und eine zwischen einer Trommel (14) des Federhauses und der Welle (11) montierte Feder umschließt, wobei die Welle ein Sperrrad (21) für den Antrieb der Welle (11) drehfest trägt, wobei der Antrieb (10) ein Differential (20) aufweist, dessen erster Eingang indirekt durch das Sperrrad (21) angetrieben wird, und dessen zweiter Eingang das Federhaus ist und dessen Ausgang ein schwenkbares, zu der Welle (11) koaxiales Ausgangsrad (23) ist, dazu vorgesehen, einen Gangreserveanzeiger (100) zu bilden oder anzutreiben, und wobei das Differential (20) Kugeln (25) enthält, die dazu vorgesehen sind, einen Korb bildende Aufnahmeräume des Ausgangsrades (23) anzutreiben, und mit einer oberen Oberfläche (13) des Federhauses und mit einer unteren Oberfläche (26) auf Seiten der oberen Oberfläche (13) des Federhauses einer Differentialplatte (22) zusammenwirken, wobei die Platte (22) dazu vorgesehen ist, an der Welle (11) koaxial zu dieser zu schwenken, und mit dem Sperrrad (21) über ein Klemmmittel (24) verbunden ist und den ersten Eingang bildet, dadurch gekennzeichnet, dass das Differential (20) eine abnehmbare einteilige Differential-Unterbaugruppe (50) ist und einen ersten Schulterring (51) aufweist, der so angeordnet ist, dass er an einem Umfang der Welle (11) axial frei beweglich montiert und mit der Welle (11) drehfest verbunden ist, wobei der erste Schulterring (51) das Ausgangsrad (23) trägt, das in Bezug auf den Schulterring (51) frei schwenkbar montiert ist, wobei der Ring (51) ferner direkt oder indirekt die Differentialplatte (22) trägt, die ebenfalls an dem Schulterring (51) frei schwenkbar ist, wobei sich die Differentialplatte (22) auf den Kugeln (25) abstützt und das Sperrrad (21) auf den ersten Schulterring (51) aufgebracht ist, derart, dass die Differentialplatte (22) durch Reibung angetrieben wird.
  2. Uhrenantrieb (10) nach Anspruch 1, dadurch gekennzeichnet, dass sich das Sperrrad (21) außerhalb des Federhauses befindet, welches eine mit einer Zahnung und mit einem Deckel (12) versehene Trommel (14) umfasst, und dem Deckel (12) bzw. der Trommel (14) gegenüberliegt, und dass das Differential (20) so angeordnet ist, dass es axial zwischen dem Deckel (12) bzw. der Trommel (14) und dem Sperrrad (21) eingefügt ist.
  3. Uhrwerk (200), umfassend eine Platte (2), die einen Antrieb (10) nach Anspruch 1 oder 2 trägt, dadurch gekennzeichnet, dass die Platte (2) ein erstes Differentialantrieb-Umlenkräderwerk (30) trägt, das in Eingriff steht mit dem Sperrrad (21) und mit einem zweiten Differential-Umlenkräderwerk (40), das ebenfalls die Platte (2) trägt und das mit der Differentialplatte (22) in Eingriff steht.
  4. Uhrwerk (200) nach Anspruch 3, dadurch gekennzeichnet, dass die Platte (22) so angeordnet ist, dass sie sich an der Welle (11) koaxial hierzu schwenkt, und mit dem Sperrrad (21) und mit einer Platte (2) durch ein Reibungmittel (24) verbunden ist.
  5. Tragbare Uhr (300) oder Zeitmessgerät, umfassend mindestens einen Antrieb (10) nach Anspruch 1 oder 2 und ein Uhrwerk (200) nach Anspruch 3 oder 4.
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 EP3106927A2 (de) 2016-12-21
EP3106927A3 EP3106927A3 (de) 2017-04-19
EP3106927B1 true EP3106927B1 (de) 2020-06-03

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ID=53269358

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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) CN205827081U (de)

Families Citing this family (4)

* 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

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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.
CH110214A (de) 1924-06-17 1925-05-16 Knorr Bremse Ag Ubergangskupplung für Eisenbahn-Fahrzeuge.
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
DE1015747B (de) * 1952-12-08 1957-09-12 Felsa A G Differentialgetriebe fuer die UEberwachung der Federspannung in Uhren
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
DE602007002471D1 (de) 2007-03-13 2009-10-29 Montres Breguet Sa Uhr mit Anzeige der Gangreserve
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

Non-Patent Citations (1)

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Title
None *

Also Published As

Publication number Publication date
JP2016224043A (ja) 2016-12-28
US9971311B2 (en) 2018-05-15
EP3098668A1 (de) 2016-11-30
CN205827081U (zh) 2016-12-21
JP6196706B2 (ja) 2017-09-13
US20160349709A1 (en) 2016-12-01
EP3106927A2 (de) 2016-12-21
CN106200341A (zh) 2016-12-07
EP3098668B1 (de) 2018-10-31
EP3106927A3 (de) 2017-04-19
CN106200341B (zh) 2018-10-02

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