EP1978420B1 - Zahnrad für Uhrwerk und Vorrichtung zur Korrektur eines Anzeigemechanismus für eine Uhr mit einem solchen Zahnrad - Google Patents

Zahnrad für Uhrwerk und Vorrichtung zur Korrektur eines Anzeigemechanismus für eine Uhr mit einem solchen Zahnrad Download PDF

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Publication number
EP1978420B1
EP1978420B1 EP07105669A EP07105669A EP1978420B1 EP 1978420 B1 EP1978420 B1 EP 1978420B1 EP 07105669 A EP07105669 A EP 07105669A EP 07105669 A EP07105669 A EP 07105669A EP 1978420 B1 EP1978420 B1 EP 1978420B1
Authority
EP
European Patent Office
Prior art keywords
toothing
pitch
teeth
wheel
pinion
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
EP07105669A
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English (en)
French (fr)
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EP1978420A1 (de
Inventor
Julien Chaignat
Marco Bettelini
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
Priority to DE602007010423T priority Critical patent/DE602007010423D1/de
Application filed by ETA SA Manufacture Horlogere Suisse filed Critical ETA SA Manufacture Horlogere Suisse
Priority to EP07105669A priority patent/EP1978420B1/de
Priority to AT07105669T priority patent/ATE487962T1/de
Priority to JP2008079830A priority patent/JP5203003B2/ja
Priority to SG200802381-4A priority patent/SG146583A1/en
Priority to US12/056,668 priority patent/US7957226B2/en
Priority to CN2008100905906A priority patent/CN101286038B/zh
Publication of EP1978420A1 publication Critical patent/EP1978420A1/de
Priority to HK09103231.4A priority patent/HK1125188A1/xx
Application granted granted Critical
Publication of EP1978420B1 publication Critical patent/EP1978420B1/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
    • G04B19/00—Indicating the time by visual means
    • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
    • G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped
    • G04B19/25—Devices for setting the date indicators manually
    • 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
    • G04B13/02—Wheels; Pinions; Spindles; Pivots
    • G04B13/027—Wheels; Pinions; Spindles; Pivots planar toothing: shape and design
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/1987—Rotary bodies

Definitions

  • the present invention relates to the field of watchmaking. It relates more specifically to a correction device of a display mechanism of a time indication comprising a wheel provided with two sets of teeth lying in the same plane. The invention also relates to said wheel as such.
  • Mechanisms for displaying a time indication, such as a date are known to those skilled in the art. They typically comprise a display member, such as a date ring, a drive mechanism of this display member, and a correction device actuated by a winding stem.
  • the correction devices are generally complex and bulky. They typically comprise at least one idler wheel actuated by a pinion mounted on the winding stem, and a correcting, sliding or fixed gear, engaged with the idler wheel on the one hand, and the display member of somewhere else.
  • a major disadvantage of such a correction device is its thickness, mainly due to the return wheel which comprises two levels of teeth.
  • the return wheel which comprises two levels of teeth.
  • the document JP 59 160791 wherein the idler wheel includes a first gear level engaged with the winding pinion gear, and a second gear level engaged with a second idler gear.
  • the return wheel is arranged in overthickness of the pinion of the winding stem. It includes a singing toothing taken with this pinion, and a radial toothing meshing with the corrector pinion.
  • the correction gear also has two active levels. Because of their thickness, such devices are not suitable for ultra-thin movements.
  • the document JP 58 128556 further described a gear of a first wheel having a larger space than the pitch of the toothing between two successive and the toothed sector of the second wheel has a larger tooth than the other teeth of its toothing, the wider tooth being intended to cooperate with said space of the first wheel.
  • This arrangement is intended to prevent damage to the teeth during their mutual engagement; however, it does not allow the described wheel to solve the aforementioned thickness problems.
  • correction devices much simpler design, include a pinion mounted on the winding stem, in direct contact with a toothing of the display member.
  • the pinion comprises two substantially helical fins, arranged to cooperate in a direction of rotation only, with the toothing of the display member.
  • the display member is generally positioned using a jumper.
  • This type of correction device is certainly very simple, but it is bulky for significant display member diameters. Indeed, the diameter of the pinion must be related to the pitch of the toothing of the display member, so that each fin causes a step the display member when the pinion rotates. The diameter of the pinion is therefore all the more important that the diameter of the display member is large, which is why this device is not very suitable for ultrathin movements.
  • the present invention proposes to overcome these disadvantages by proposing a clockwork wheel according to claim 1 which is particularly suitable for a simple correction device and minimum space requirement, mainly in thickness.
  • a particular aspect of the invention relates to a device for correcting a display mechanism for a timepiece of the type comprising a display member provided with pitch teeth P, the correction device comprising a pinion provided with a notch p, mounted on a winding stem so as to occupy at least one correction position, and an intermediate wheel mounted between the pinion and the display member.
  • the intermediate wheel comprises a main pitch pitch P, of head diameter D, of foot diameter d1 in engagement with the pitch pitch P of the display member, and a secondary toothing of pitch less than P, concentric with the main toothing, situated in the same plane as the main toothing, with a head diameter D equal to the head diameter of the main toothing, and with a root diameter d2 greater than the root diameter d1 of the toothing main gear, engaged with the pitch gear p of the pinion when the pinion occupies the correction position.
  • the thickness of the correction device according to the invention does not exceed the diameter of the pinion.
  • the pinion is not in direct contact with the display member as is the case of the pinion fin described above, but with the second set of teeth p, its diameter and its size are found reduced.
  • the invention also relates to a clock wheel equipping this correction device.
  • the invention relates to a substantially flat watch wheel comprising a first set of teeth defined by a pitch P, a head diameter D, a foot diameter d1, comprising at least one tooth provided with a notch extending substantially angularly.
  • the crown portion of the first teeth is cut so as to form a second coplanar and concentric to the first set of teeth, discontinuous, defined by a pitch p less than the pitch P of the first toothing, a diameter of the head D equal to the head diameter of the first toothing, and a foot diameter d2 greater than the root diameter d1 of the first toothing.
  • the correction device represented on the figures 1 and 2 is intended to correct the display of a time indication provided by a display member 12.
  • the time indication is, for example, a date, a month, or a day of the week.
  • the display member 12 is furthermore rotatably mounted on a plate 18 and positioned angularly by means of a jumper 20.
  • a holding plate 22 partially covers the toothing 16 and is fixed to the plate 18, ensures its axial positioning.
  • a drive mechanism of the display member 12 is provided but not shown. It comprises, for example, in the case of a date, a date drive wheel operating a step per day the display member 12, driven by a clock wheel of the hours. Such a mechanism is conventional and will not be described further.
  • the correction device 10 conventionally comprises a winding stem 24 mounted to rotate in the plate 18, and provided at its outer end with a not shown winding crown.
  • the winding stem 24 is slidably mounted so as to occupy a neutral position, corresponding to its most recessed position, and two positions active, corresponding to a first and a second drawn positions.
  • a sliding pinion 26 is rotatably mounted on the winding stem 24.
  • the winding stem 24 has a square section on a portion occupied by the sliding pinion 26.
  • the sliding pinion 26 is itself provided with a hole adapted in shape and size to the section of the winding stem 24.
  • first right-corner toothing 28 and at a second end, a second edge toothing 30 of not p.
  • Said second toothing 30 is straight, but other forms of teeth can be envisaged, as it will appear later.
  • the sliding pinion 26 is actuated conventionally by a mechanism consisting of a pull tab 32 and a rocker 34 cooperating together to move it from a neutral position, when the winding stem 24 is in the neutral position, to a position at a correction position of the time indication A, when the winding stem 24 occupies a first drawn position, and then at a time-setting position B, when the winding stem 24 occupies the second drawn position.
  • This actuating mechanism of the sliding pinion 26 is well known to those skilled in the art and will not be described further.
  • the sliding pinion 26 meshes, by its first toothing 28, with a return wheel 36 kinematically connected to a roadway not shown.
  • the time setting can be performed by actuating the winding stem 24, in one direction of rotation, as in the other.
  • the sliding pinion 26 engages, by its second toothing 30, with a correction wheel 38 mounted free to rotate on the holding plate 22.
  • the correction wheel 38 is itself in engagement with the toothing 16 of the display member 12.
  • the assembly formed by the winding stem 24, the sliding pinion 26, the correction wheel 38 and the display member 12 is represented on the figure 3 in the position of correction of the indication of time A.
  • the characteristics of the correction wheel 38 appear in more detail in figure 4 .
  • the correction wheel 38 comprises a first set of teeth 40 of pitch P, of head diameter D, of foot diameter d1.
  • the toothing 40 meshes with the toothing 16 of the display member 12.
  • the teeth 42 further comprise two substantially radial flanks and an apex 44 extending substantially angularly.
  • the top 44 is cut so as to form a second toothing 46, discontinuous, coplanar and concentric with the first toothing 40, of pitch p less than the pitch P of the first toothing, of head diameter D equal to the head diameter of the first set of teeth.
  • toothing 40 and foot diameter d2 greater than the root diameter d1 of the first toothing 40.
  • the toothing 46 meshes with the edge toothing 30 of the sliding pinion 26.
  • the toothing 46 has significant discontinuities, because it is only present at the top 44 of the teeth 42 of the first toothing 40. It is necessary, however, for the correct operation of the correction device 10, that the second toothing 46 is always engaged, at least by means of a tooth, with the edge toothing 30 of the sliding pinion 26.
  • the spaces of width s separating two consecutive teeth 42 are as small as possible. In practice, they can not be less than the width s of the teeth 17 constituting the toothing 16 of the display member 12. It will therefore be ensured that the teeth 17 of the display member 12 are of a width s as low as possible.
  • the toothing 30 and the second toothing 46 are straight, which allows a coupling in both directions of rotation.
  • the toothing 30 and the second toothing 46 are sawed, so that the two teeth cooperate in a single direction of rotation, in the manner of two Breguet teeth.
  • the sliding pinion 26 and the correction wheel 38 then form a one-way coupling for correcting the display member in a single direction of rotation.
  • the correction device 10 thus described, is of great simplicity and compactness. It is ideally suited for ultra-thin movement, mechanical or electromechanical type.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Gears, Cams (AREA)
  • Electric Clocks (AREA)

Claims (10)

  1. Im Wesentlichen ebenes Uhrrad (38), umfassend eine erste Zahnung (40), die durch eine Zahnteilung P, einen Kopfdurchmesser D und einen Fussdurchmesser d1 definiert ist, beinhaltend eine Vielzahl von Zähnen (42), die jeweils mit einem Gipfel (44) versehen sind, von dem sich wenigstens ein Bereich im Wesentlichen winkelmässig erstreckt, dadurch gekennzeichnet, dass der besagte Bereich des Gipfels (44) derart aufgeschnitten ist, dass er eine zweite Zahnung (46) bildet, welche ebenfalls eine Vielzahl von Zähnen beinhaltet, die koplanar und konzentrisch mit der ersten Zahnung (40) ist, und durch eine Zahnteilung p, die kleiner als die Zahnteilung P der besagten ersten Zahnung (40) ist, einen Kopfdurchmesser D, der gleich dem Kopfdurchmesser der besagten ersten Zahnung (40) ist, und einen Fussdurchmesser d2, der grösser als der Fussdurchmesser d1 der ersten Zahnung (40) ist, definiert ist.
  2. Uhrrad gemäss Anspruch 1, dadurch gekennzeichnet, dass die besagte erste Zahnung (40) durch Zähne (42) geformt ist, die mit einem Gipfel (44) versehen sind, der sich im Wesentlichen winkelmässig ausstreckt, und dass der besagte Gipfel (44) derart aufgeschnitten ist, dass er eine zweite diskontinuerliche Zahnung (46) bildet, die koplanar und konzentrisch mit der ersten Zahnung (40) ist, und durch eine Zahnteilung p, die kleiner als die Zahnteilung P der besagten ersten Zahnung (40) ist, einen Kopfdurchmesser D, der gleich dem Kopfdurchmesser der besagten ersten Zahnung (40) ist, und einen Fussdurchmesser d2, der grösser als der Fussdurchmesser d1 der ersten Zahnung (40) ist, definiert ist.
  3. Uhrrad gemäss Anspruch 1, dadurch gekennzeichnet, dass die Zahnteilung P ein Vielfaches der Zahnteilung p ist.
  4. Uhrrad gemäss Anspruch 1 oder 2, dadurch gekennzeichnet, dass, die besagte zweite Zahnung (46) eine Sägezahnung ist.
  5. Uhrrad gemäss Anspruch 1 oder 2, dadurch gekennzeichnet, dass, die besagte zweite Zahnung (46) gerade ist.
  6. Uhrrad gemäss einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die besagten Zähne (42) eine Breite S aufweisen, von einem Zwischenraum mit einer Breite s getrennt sind, wobei die besagte Breite S der Zähne (42) gross im Vergleich zu der Breite s des Zwischenraums zwischen zwei Zähnen (42) ist.
  7. Vorrichtung (10) zur Korrektur eines Anzeigemechanismus für eine Uhr, die ein Anzeigeorgan (12) umfasst, das mit einer Zahnung (16) mit einem Zahnteilung P versehen ist, wobei die Korrekturvorrichtung (10) ein Ritzel (26) aufweist, das mit einer Zahnung (30) mit Zahnteilung p versehen ist, und derart auf einer Stellwelle (24) montiert ist, dass es wenigstens eine Anzeigekorrekturstelle A besetzt, und ein Korrekturrad (38) gemäss einem der Ansprüche 1 bis 6 umfasst, das zwischen dem besagten Ritzel (26) und dem besagten Anzeigeorgan (12) montiert ist.
  8. Korrekturvorrichtung (10) gemäss Anspruch 7, dadurch gekennzeichnet, dass das Ritzel (26) gleitend zwischen einer Zeiteinstellstelle B und einer Anzeigekorrekturstelle A montiert ist.
  9. Korrekturvorrichtung (10) gemäss Anspruch 8, dadurch gekennzeichnet, dass sie ferner Umschaltungsmittel (32, 34) umfasst, um das besagte Ritzel (26) von der besagten Zeiteinstellstelle B auf der besagten Anzeigekorrekturstelle A umzuschalten, und umgekehrt.
  10. Korrekturvorrichtung (10) gemäss einem der Ansprüche 7 bis 9, dadurch gekennzeichnet, dass die besagte Zahnung (30) des besagten Ritzels (26) und die besagte zweite Zahnung (46) des besagten Korrekturrads (38) Sägezahnungen sind.
EP07105669A 2007-04-04 2007-04-04 Zahnrad für Uhrwerk und Vorrichtung zur Korrektur eines Anzeigemechanismus für eine Uhr mit einem solchen Zahnrad Active EP1978420B1 (de)

Priority Applications (8)

Application Number Priority Date Filing Date Title
EP07105669A EP1978420B1 (de) 2007-04-04 2007-04-04 Zahnrad für Uhrwerk und Vorrichtung zur Korrektur eines Anzeigemechanismus für eine Uhr mit einem solchen Zahnrad
AT07105669T ATE487962T1 (de) 2007-04-04 2007-04-04 Zahnrad für uhrwerk und vorrichtung zur korrektur eines anzeigemechanismus für eine uhr mit einem solchen zahnrad
DE602007010423T DE602007010423D1 (de) 2007-04-04 2007-04-04 Zahnrad für Uhrwerk und Vorrichtung zur Korrektur eines Anzeigemechanismus für eine Uhr mit einem solchen Zahnrad
SG200802381-4A SG146583A1 (en) 2007-04-04 2008-03-26 Correction device for timepiece display mechanism and wheel fitted thereto
JP2008079830A JP5203003B2 (ja) 2007-04-04 2008-03-26 時計の表示機構の修正装置とその修正装置に適合する歯車
US12/056,668 US7957226B2 (en) 2007-04-04 2008-03-27 Correction device for timepiece display mechanism and wheel fitted thereto
CN2008100905906A CN101286038B (zh) 2007-04-04 2008-04-03 用于时计显示机构的修正设备和配合到其的轮
HK09103231.4A HK1125188A1 (en) 2007-04-04 2009-04-06 Correction device for timepiece display mechanism and wheel fitted thereto

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07105669A EP1978420B1 (de) 2007-04-04 2007-04-04 Zahnrad für Uhrwerk und Vorrichtung zur Korrektur eines Anzeigemechanismus für eine Uhr mit einem solchen Zahnrad

Publications (2)

Publication Number Publication Date
EP1978420A1 EP1978420A1 (de) 2008-10-08
EP1978420B1 true EP1978420B1 (de) 2010-11-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP07105669A Active EP1978420B1 (de) 2007-04-04 2007-04-04 Zahnrad für Uhrwerk und Vorrichtung zur Korrektur eines Anzeigemechanismus für eine Uhr mit einem solchen Zahnrad

Country Status (8)

Country Link
US (1) US7957226B2 (de)
EP (1) EP1978420B1 (de)
JP (1) JP5203003B2 (de)
CN (1) CN101286038B (de)
AT (1) ATE487962T1 (de)
DE (1) DE602007010423D1 (de)
HK (1) HK1125188A1 (de)
SG (1) SG146583A1 (de)

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EP2124112A1 (de) * 2008-05-22 2009-11-25 CT Time S.A. Uhrmechanismus und diesen Mechanismus umfassendes Modul
EP2428855B1 (de) * 2010-09-08 2019-07-03 Rolex S.A. Uhrenteil, das eine Vorrichtung zur Anzeige von festgelegten Zeiträumen umfasst
CN103425038B (zh) * 2013-08-17 2015-11-04 吴中一 手表机芯日历过轮结构
JP6510781B2 (ja) * 2014-09-12 2019-05-08 セイコーインスツル株式会社 歯車体、時差修正機構、時計用ムーブメント及び時計
EP3144743B1 (de) * 2015-09-15 2018-03-14 ETA SA Manufacture Horlogère Suisse Uhrwerk mit einem datumskorrektur-mechanismus
CH714171B1 (fr) * 2017-09-22 2019-08-30 Montres Breguet Sa Dispositif pour remonter et/ou immobiliser un chronomètre de marine.
CN112286030B (zh) * 2020-12-04 2021-08-17 深圳穿金戴银科技股份有限公司 手表调时结构、手表调时结构组装方法及调时手表

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Also Published As

Publication number Publication date
SG146583A1 (en) 2008-10-30
DE602007010423D1 (de) 2010-12-23
US20080247277A1 (en) 2008-10-09
JP5203003B2 (ja) 2013-06-05
JP2008256687A (ja) 2008-10-23
CN101286038A (zh) 2008-10-15
EP1978420A1 (de) 2008-10-08
CN101286038B (zh) 2012-02-01
HK1125188A1 (en) 2009-07-31
US7957226B2 (en) 2011-06-07
ATE487962T1 (de) 2010-11-15

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