EP0568499B1 - Vorrichtung zur Anzeige der Gangreserve einer Uhr - Google Patents

Vorrichtung zur Anzeige der Gangreserve einer Uhr Download PDF

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Publication number
EP0568499B1
EP0568499B1 EP19930810299 EP93810299A EP0568499B1 EP 0568499 B1 EP0568499 B1 EP 0568499B1 EP 19930810299 EP19930810299 EP 19930810299 EP 93810299 A EP93810299 A EP 93810299A EP 0568499 B1 EP0568499 B1 EP 0568499B1
Authority
EP
European Patent Office
Prior art keywords
wheel
cam
star wheel
watch
action
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.)
Expired - Lifetime
Application number
EP19930810299
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English (en)
French (fr)
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EP0568499A1 (de
Inventor
André Cachin
Norbert Perucchi
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.)
EXIDEL SA
Original Assignee
EXIDEL SA
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Filing date
Publication date
Application filed by EXIDEL SA filed Critical EXIDEL SA
Publication of EP0568499A1 publication Critical patent/EP0568499A1/de
Application granted granted Critical
Publication of EP0568499B1 publication Critical patent/EP0568499B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • 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

Definitions

  • the present invention relates to a power reserve indicator device for a watch according to the preamble of claim 1.
  • the preferred field of application of such a device is that of mechanical watches, with manual or automatic winding. Its interest is obvious, since it allows the wearer of a watch of the aforementioned kind to know at any time the state of winding or disarming of the barrel spring, this state, directly translated into remaining running time until next winding, preferably in hours (possibly subdivided), being indicated by an indicating member, for example a hand whose end is located opposite a graduation or a disc moving behind a window arranged in the watch face .
  • the implementation of the power reserve indicator device essentially encounters two difficulties.
  • the actuating element of the organ indicator is therefore subject to two contradictory commands (disarming and armament commands), which must be designed so as not to cause disorders, that is to say be synchronized resp. granted or adapted between them.
  • the needle drive element respectively the needle itself, will make a maximum of one revolution for the duration of the walk, which is generally between 35 and 50 hours, depending on the calibers.
  • the object of the present invention is to overcome the drawbacks which the known devices present. It is achieved by virtue of the features defined in claim 1 and the dependent claims.
  • the device comprises a star wheel 1 (hereinafter star or wheel 1) carrying on its axis 1 'an indicator hand (not shown in the figure) of the power reserve, which star is engaged intermittently, of on the one hand, with a rocker 4 controlled by the winding device and, on the other hand, with a cam 10 controlled by a mobile of the movement of the watch, as will be seen through the description of the operation of said device.
  • the wheel 1 further comprises a circular opening or groove 16 extending over an arc of a circle and a notch 1c, the functions of which we will return to later.
  • a barrel shaft 2, of axis 2A involved in the reassembly of the barrel spring carries a cam 3 having at least one ramp -two, 31.32, diametrically opposite, according to the example described.
  • the rocker 4, having a spout 4 '', is subjected to the action of this cam 3 and to that of a spring 5, so as to be able to oscillate around its axis 4 'between two extreme positions shown in the figure ( one of the positions being only partially in dotted lines).
  • a pinion 8 secured to an axis 8A of the train of the watch drives a wheel 9.
  • the wheel 9 carries on its axis 9A a cam 10 mounted free in rotation and capable of being driven by a pin 11 secured to this wheel.
  • the cam 10 has a spout 101 which can instantly pass from a position 10 '(shown in solid lines) to a position 10''(shown in dotted lines) under the action of a spring 13.
  • the cam 10 In its rotational movement in the direction of the arrow 102 (the pin 11 being at a given instant (figures), against the notch 103 of a clearance (not referenced) made in the zone opposite to that of the spout 101), the cam 10 gradually lifts the spring 13.
  • the gear 8.9 is calculated so that the wheel 9 makes one revolution for a half-revolution of the cam 3.
  • the number of turns of the wheel 9 is proportional to the number of turns of the cam 3, the proportionality factor being equal to the number of ramps that the cam 3 has.
  • Figure 3 shows the complete disarming situation.
  • the end 16 '' of the circular groove 16 abuts against the fixed element 15.
  • the opening 16, resp. the end 16 '' can come into contact with the pin 15 before complete disarming.
  • the pointer of the indicator is stopped, but the watch, by finishing disarming, will cause the serge 1b of the wheel 1 to flex: the tooth 1a will retract or be erased with each passage of the cam 10, this retraction being made possible by the notch 1c, and the registration will thus be ensured.
  • the notch 1c is oriented radially, extends from the outside of the teeth to the groove 16 and is made near the end 16 'of the groove 16, the tooth the being the first adjacent to the notch 1c and situated on the side opposite the end 16 ′ with respect to this notch.
  • the elastic members 7, 5, 13, will each have to create on the star 1 different couples between them and adapted to each other.
  • the actuating torque exerted on the wheel 1 by the spring or jumper 7 has a reference value equal to one
  • the actuating torque exerted on the wheel 1 by the lever 4 controlled by the spring 5 must have a value equal to approximately two
  • the actuating torque exerted on the wheel by the spout 10 'controlled by the spring 13 must have a value equal to approximately six, the spout 10' having to counter the cumulative actions of springs 5 and 7.
  • the device according to the invention is of simple construction, has a reduced number of parts and does not significantly increase the thickness of the watch. It comes in modular form allowing it to be installed outside the movement. Thus, in the first place, the increase will only be of the order of half of that which would result from a device with differential gears. Then, there is no need to provide for any particular change in size; only the heights of the pivots on which the cam 3 and the wheel 8 are mounted must be slightly increased. Finally, the various elements of the device are easily accessible. In addition, thanks to the means used, it is particularly suitable for mechanical watches with automatic winding, a resetting being carried out automatically in both directions, even following an accidental shift, which ensures perfect reliability of the reading of the indicator organ.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)

Claims (5)

  1. Vorrichtung zur Anzeige der Gangreserve einer mechanischen Uhr, insbesondere einer Uhr mit Selbstaufzug, mit einem Zackenrad (1), das ein Anzeigeorgan trägt, wobei auf das Zackenrad beim Federaufzug eine Drehwirkung von einer ersten Gruppe von Elementen ausgeübt wird und diese Elemente eine Wippe (4) aufweisen, auf die einerseits ein Exzenternocken (3) mit mindestens einer Rampe und angetrieben von der Federgehäuseachse (2) und andererseits ein erstes elastisches Organ (5) einwirkt, derart, dass bei jeder Aufzugsbewegung ein Zahn des Zackenrades (1) vorgeschoben wird, und wobei auf das Zackenrad beim Federablauf eine Drehwirkung von einer zweiten Gruppe von Elementen ausgeübt wird und diese Elemente einen Exzenternocken (10) mit einer Nase (101) aufweisen, wodurch bei jeder Ablaufbewegung ein Zahn des Zackenrades (1) vorgeschoben wird, und wobei diese beiden Wirkungen intermittierend und entgegengesetzt sind und die Positionierung des Zackenrades (1) von einem zweiten elastischen Organ (7) bewirkt wird, dadurch gekennzeichnet, dass der mit der Nase (101) versehene Exzenternocken (10) mit einem Triebrad (8) der Uhrwerksachse (8A) zusammenwirkt und die Achse (2A) der Federgehäusewelle und die Achse (8A) des Triebrads (8) nicht den gleichen Träger besitzen, derart, dass die Anzeigevorrichtung als Informationsquelle zwei nicht koaxiale Wellen des Uhrwerks benutzt, sowie dadurch gekennzeichnet, dass die Vorrichtung als Modul vorliegt, das aussen am Uhrwerk angebracht ist.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das Zackenrad (1) eine kreisförmige Ausnehmung (16) aufweist, und dass das Anzeigeorgan mittels eines feststehenden Teils (15), das in die Ausnehmung hineinragt, arretiert wird, wenn die Uhrfeder vollständig aufgezogen ist, indem das eine Ende (16') der Ausnehmung am festen Teil (15) zum Anschlag kommt und dadurch eine Drehung des Zakkenrads (1) verhindert, wobei die sich Federgehäusewelle (2) unter der Einwirkung einer Schwingmasse weiterdrehen kann.
  3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Triebrad (8) mit einem Rad (9) auf einer Achse (9A) in Eingriff steht, wobei der mit der Nase versehene Exzenternocken (10) frei drehbar auf der Achse (9A) des genannten Rades (9) sitzt und entweder durch einen Stift (11), der am genannten Rad (9) angebracht ist, oder durch ein drittes elastisches Organ (13) mitgenommen wird, und wobei das andere Ende (16") der Ausnehmung (16) bei vollständigem Ablauf des Werks am festen Teil (15) zum Anschlag kommt.
  4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass nach einer zufälligen Verstellung eine selbsttätige Neueinstellung in beiden Richtungen gewährleistet ist, und zwar entweder durch die Wirkung der Nase (101) des Exzenternockens (10), die durch Biegung des Ringes (1b) des Zackenrades (1) einen Zahn (la), der sich an einen radialen Einschnitt (1c) im genannten Zackenrad (1) anschliesst, ausser Eingriff bringt, wobei das Ende (16") am festen Teil (15) anliegt, oder durch Anhalten des Zakkenrads (1), wenn das Ende (16') am festen Teil (15) anliegt.
  5. Vorrichtung nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass die Antriebsmomente, die von den elastischen Organen (7, 5, 13) auf das Zackenrad (1) ausgeübt werden, aufeinander abgestimmt sind, wobei die vom ersten elastischen Organ (5) und vom dritten elastischen Organ ausgeübten Momente vorzugsweise etwa das Doppelte bzw. das Sechsfache des vom zweiten Organ ausgeübten Moments (7) betragen.
EP19930810299 1992-04-29 1993-04-23 Vorrichtung zur Anzeige der Gangreserve einer Uhr Expired - Lifetime EP0568499B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH138092 1992-04-29
CH1380/92 1992-04-29

Publications (2)

Publication Number Publication Date
EP0568499A1 EP0568499A1 (de) 1993-11-03
EP0568499B1 true EP0568499B1 (de) 1997-05-21

Family

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Family Applications (1)

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EP19930810299 Expired - Lifetime EP0568499B1 (de) 1992-04-29 1993-04-23 Vorrichtung zur Anzeige der Gangreserve einer Uhr

Country Status (2)

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EP (1) EP0568499B1 (de)
DE (1) DE69310808T2 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102183884A (zh) * 2009-12-28 2011-09-14 布朗潘有限公司 用于指示钟表中的剩余发条盒力矩的测力装置
EP3306415A1 (de) 2016-10-04 2018-04-11 ETA SA Manufacture Horlogère Suisse Mechanisches uhrwerk mit erfassung der gangreserve
EP3306416A1 (de) 2016-10-04 2018-04-11 ETA SA Manufacture Horlogère Suisse Mechanisches uhrwerk mit erfassung der gangreserve
EP3333637A1 (de) 2016-12-12 2018-06-13 ETA SA Manufacture Horlogère Suisse Mechanisches uhrwerk mit erfassung der gangreserve
EP3992727A1 (de) 2020-10-30 2022-05-04 ETA SA Manufacture Horlogère Suisse Mechanisches uhrwerk mit erfassung der gangreserve

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1260883A1 (de) 2001-05-22 2002-11-27 Parmigiani Mesure et Art du Temps SA Vorrichtung zur Anzeige der Gangreserve einer Uhr
RU2526554C1 (ru) * 2013-03-21 2014-08-27 Общество с ограниченной ответственностью "Константин Чайкин" Устройство индикации критического запаса хода часового механизма и часы с устройством индикации критического запаса хода (варианты)
DE102019007056B3 (de) * 2019-09-27 2020-08-13 Dirk Dornblüth Armbanduhr
EP4343449A1 (de) * 2022-09-26 2024-03-27 Oris Holding AG Gangreserve-anzeigevorrichtung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR548785A (fr) * 1922-03-13 1923-01-25 Dispositif indicateur de remontage pour barillet
FR638149A (fr) * 1927-07-23 1928-05-16 Dispositif indicateur d'armage de ressort de barillet
FR872410A (fr) * 1940-11-22 1942-06-08 Kienzle App A G Moteur à ressort pour mouvements d'horlogerie et enregistreurs
CH263707A (fr) * 1947-11-27 1949-09-15 Le Coultre & Cie Montre-bracelet.

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102183884A (zh) * 2009-12-28 2011-09-14 布朗潘有限公司 用于指示钟表中的剩余发条盒力矩的测力装置
CN102183884B (zh) * 2009-12-28 2013-09-18 布朗潘有限公司 用于指示钟表中的剩余发条盒力矩的测力装置
EP3306415A1 (de) 2016-10-04 2018-04-11 ETA SA Manufacture Horlogère Suisse Mechanisches uhrwerk mit erfassung der gangreserve
EP3306416A1 (de) 2016-10-04 2018-04-11 ETA SA Manufacture Horlogère Suisse Mechanisches uhrwerk mit erfassung der gangreserve
EP3333637A1 (de) 2016-12-12 2018-06-13 ETA SA Manufacture Horlogère Suisse Mechanisches uhrwerk mit erfassung der gangreserve
EP3992727A1 (de) 2020-10-30 2022-05-04 ETA SA Manufacture Horlogère Suisse Mechanisches uhrwerk mit erfassung der gangreserve

Also Published As

Publication number Publication date
DE69310808T2 (de) 1997-08-28
DE69310808D1 (de) 1997-06-26
EP0568499A1 (de) 1993-11-03

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