EP2957963B1 - Drehteil einer Uhr - Google Patents

Drehteil einer Uhr Download PDF

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Publication number
EP2957963B1
EP2957963B1 EP14172870.9A EP14172870A EP2957963B1 EP 2957963 B1 EP2957963 B1 EP 2957963B1 EP 14172870 A EP14172870 A EP 14172870A EP 2957963 B1 EP2957963 B1 EP 2957963B1
Authority
EP
European Patent Office
Prior art keywords
arm
arbor
plate
wheel set
pivot axis
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
EP14172870.9A
Other languages
English (en)
French (fr)
Other versions
EP2957963A1 (de
Inventor
Olivier Mertenat
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 CH00920/14A priority Critical patent/CH709792A2/fr
Application filed by ETA SA Manufacture Horlogere Suisse filed Critical ETA SA Manufacture Horlogere Suisse
Priority to EP14172870.9A priority patent/EP2957963B1/de
Priority to US15/309,452 priority patent/US10365608B2/en
Priority to CN201580031842.6A priority patent/CN106537262B/zh
Priority to JP2016547098A priority patent/JP6276864B2/ja
Priority to PCT/EP2015/062542 priority patent/WO2015193123A1/fr
Priority to EP15727642.9A priority patent/EP3158402B1/de
Publication of EP2957963A1 publication Critical patent/EP2957963A1/de
Application granted granted Critical
Publication of EP2957963B1 publication Critical patent/EP2957963B1/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
    • G04B13/00—Gearwork
    • G04B13/02—Wheels; Pinions; Spindles; Pivots
    • G04B13/021—Wheels; Pinions; Spindles; Pivots elastic fitting with a spindle, axis or shaft
    • G04B13/023—Wheels; Pinions; Spindles; Pivots elastic fitting with a spindle, axis or shaft allowing rotational slipping when a threshold torque is exceeded
    • 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
    • G04B13/021—Wheels; Pinions; Spindles; Pivots elastic fitting with a spindle, axis or shaft
    • 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
    • G04B13/025—Wheels; Pinions; Spindles; Pivots with elastic means between the toothing and the hub of a toothed wheel

Definitions

  • the invention relates to a multi-part horological mobile, comprising a first component constituted by a shaft which comprises, around a first axis of pivoting, a housing arranged for receiving a second component constituted by a board in a single axial position, said board having a peripheral surface with reference to a second pivot axis, said shaft comprising, on either side of said at least one housing, in the direction of said first pivot axis, a bearing surface of axial stop arranged to maintain abutment abutment said board on said shaft, wherein said board comprises at least one first arm elastically radially relative to said second pivot axis, and at least one second rigid or elastic arm radially relative to said second axis of pivoting, said first elastic arm and second arm together forming a clamp arranged to clamp a radial bearing surface q ue comprises said shaft in the vicinity of said axial abutment bearing surface, said first elastic arm and second arm extending on either side of said second pivot axis, in directions parallel to
  • the invention further relates to a watch movement comprising at least one such mobile.
  • the invention relates to the field of watch mechanisms, and more particularly the wheels.
  • Many mechanical watch movements comprise at least one friction mobile, in particular to allow adjustments when the watch operates.
  • a mechanical movement equipped with a medium wheel, usually has a friction at the level of the clockwork. Friction makes it possible to turn the road, independently of the finishing gear, during the time setting. Friction also allows rotation of the drive wheel plate when the watch is running.
  • the document FR 1061488 in the name of EBAUCHES ETA SA describes an improvement for watch with second hand in the center, where a second wheel pivoted to the center of the movement is driven directly, while a coaxial pavement to the second wheel is rotated indirectly. More particularly, an indirect minute wheel, engaged with the pinion of the wheel of small average, is fixed to friction on the roadway.
  • the document JP S59 135385 in the name of SEIKO describes a plastic wheel fixed elastically on a metal gear.
  • the document JP S50 91562 in the name of SEIKO describes a wheel with a board with spokes elastically fixed on a tree.
  • the invention relates to a multi-part clockwork mobile according to claim 1.
  • the invention also relates to a watch movement comprising at least one such mobile, characterized in that the composition of said mobile is restricted to said shaft and said board assembled one on the other.
  • the invention relates to a multi-part watch mobile 100.
  • this mobile 100 comprises friction means, and is called “friction mobile”.
  • the mobile 100 comprises a first component consisting of a shaft 1.
  • This shaft 1 comprises, around a first pivot axis D1, a housing 6 arranged for receiving a second component.
  • This second component consists of a board 2 in a single axial position.
  • the board 2 has a peripheral surface 20 with reference to a second pivot axis D2.
  • the shaft 1 comprises, on either side of the at least one housing 6, in the direction of the first axis of pivoting D1, an axial abutment bearing surface 7 which is arranged to maintain abutment abutment board 2 on the tree 1.
  • This board 2 comprises at least one first resilient arm 4 radially with respect to the second pivot axis D2, and at least one second rigid or elastic arm 5 radially relative to the second pivot axis D2.
  • first elastic arms 4 and second arms 5 together form a clamp 3, which is arranged to clamp a radial bearing surface 9 that the shaft 1 has in the vicinity of the axial abutment abutment surface 7. The friction is thus assured between the board 2 and the tree 1.
  • the elasticity of the arms 4, 5, of the board 2 is used to allow proper positioning, and preferably a snap in position.
  • the shaft 1 comprises an introduction ramp 8, which is arranged to radially push each first elastic arm 4, and each second elastic arm 5 when the board 2 comprises, to allow the introduction of the board 2 on the tree 1.
  • the board 2 comprises a first elastic arm 4 and a second elastic arm 5, symmetrical to each other with respect to the second pivot axis D2.
  • the clamp 3 is circumscribed to a cylinder whose radius is smaller than that of a cylinder circumscribed to the radial bearing surface 9.
  • the central part of the board 2 comprises as many curved surfaces, in particular cylindrical surfaces, as of arms 4, 5.
  • arms 4, 5 In the variants illustrated by the figures, which comprise a first elastic arm 4, and a second arm 5, the center of the board is defined by two curved surfaces, which come to grip the tree 1.
  • the figure 7 illustrates a similar embodiment of the invention, type "2 points" where the board 2 is on the shaft 1 at two symmetrical points P1 and P2 with respect to the axis D1.
  • Each first arm 4 or second arm 5 thus comprises such a curved surface constituted by a hollow cylindrical sector 34, 35, whose axis C is eccentric with respect to the second pivot axis D2.
  • the axis C is then further from the hollow cylindrical sector 34, 35, than the second pivot axis D2, with an eccentricity value E, visible on the figure 9 which is between 0.1 and 0.2 times the radius of the hollow cylindrical sector 34, 35, considered.
  • the value of the friction is advantageously defined by a precise interval, from 0.060 to 0.080 N.cm, in order to fulfill the criteria of quality to the impact behavior, and of setting the time. It is understood that the friction can be achieved, or at the level of surfaces of a certain magnitude, such as the cylindrical sectors 34, 35, or at point areas, for example in the form of a friction 2 points or 4 points.
  • a "4-point" type embodiment according to the invention is visible in figure 10 : the board 2 bears on the shaft 1 in four points P11, P12, P13, P14, symmetrical two by two with respect to the axis D1.
  • the inside board radius Rp is then less than the road radius Rch at the level of the shaft 1.
  • the board 2 comprises first drive means 21 at the first elastic arm 4, and second drive means 22 at each said second elastic arm 5 when the board 2 comprises.
  • first 21 and second 22 drive means comprise raised profiled sector relief and / or reentrant, which are arranged to cooperate with complementary profile tooling for the opening of the clamp 3 during the introduction of the board 2 on the tree 1.
  • first 21 and second 22 drive means are symmetrical with respect to the second pivot axis D2.
  • the board 2 may further comprise, in the vicinity of its periphery and in its inner part, third 23 and fourth 24 drive means.
  • the board 2 comprises holding means, such as posts or bores, or the like, in its most rigid part, which are arranged to cooperate with a traction tool.
  • the board 2 has on its lower face 21 and / or upper 22, a surface roughness greater than 6.3 micrometers Ra, for its cooperation in friction with a holding tool and / or traction.
  • the peripheral surface 20 is a toothing oriented on the second pivot axis D2.
  • peripheral surface 20 is a cam with reference to the second pivot axis D2 and to an angular reference constituted by the first arm 4 or by the second arm 5.
  • the radial bearing surface 9 and the introduction ramp 8 of the shaft 1 together define a bead 10, which is arranged to immobilize the board 2 on the shaft 1 when the board is in abutment. support on the axial abutment bearing surface 7 of the shaft 1.
  • the radial bearing surface 9 is flush with respect to the bead 10. This draft angle makes it possible to maintain the board 2 at a constant height and with a constant radius of friction.
  • the invention also relates to a watch movement 200 comprising at least one such mobile 100.
  • the composition of this mobile 100 is restricted to the shaft 1 and the board 2 assembled on one another.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Gears, Cams (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Sliding-Contact Bearings (AREA)
  • Micromachines (AREA)

Claims (15)

  1. Uhrendrehteil (100) aus mehreren Teilen, wobei das Drehteil (100) eine erste Komponente umfasst, die durch eine Welle (1) gebildet ist, die um eine erste Drehachse (D1) herum einen Aufnahmeraum (6) aufweist, der dafür ausgelegt ist, eine zweite Komponente in einer eindeutigen axialen Position aufzunehmen, die durch eine Platte (2) gebildet ist, wobei die Platte (2) eine auf eine zweite Drehachse (D2) bezogene Umfangsoberfläche (20) aufweist, wobei die Welle (1) beiderseits des mindestens einen Aufnahmeraums (6) in der Richtung der ersten Drehachse (D1) eine Axialanschlag-Abstützoberfläche (7) umfasst, die dafür ausgelegt ist, die Platte (2) an der Welle (1) anliegend abgestützt zu halten, wobei die Platte (2) mindestens einen ersten Arm (4), der in Bezug auf die zweite Drehachse (D2) radial elastisch ist, und mindestens einen zweiten Arm (5) umfasst, der in Bezug auf die zweite Drehachse (D2) radial starr oder elastisch ist, wobei der erste elastische Arm (4) und der zweite Arm (5) zusammen eine Klemme (3) bilden, die dafür ausgelegt ist, eine radiale Abstützoberfläche (9), die die Welle (1) in der Nähe der Axialanschlag-Abstützoberfläche (7) aufweist, einzuklemmen, wobei sich der erste elastische Arm (4) und der zweite Arm (5) beiderseits der zweiten Drehachse (D2) in zueinander parallelen Richtungen erstrecken, die in Bezug auf die Welle (1) im Wesentlichen tangential sind, wenn die Welle (1) in der Klemme (3) eingeklemmt ist, wobei die Platte (2) an der Welle (1) nur vier paarweise symmetrische Punkte (P11, P12, P13, P14) in Bezug auf die erste Drehachse (D1) trägt, mit einem inneren Radius der Platte (Rp) zwischen zwei Kontaktpunkten (P11, P12; P13, P14), die auf demselben Arm (4; 5) angeordnet sind, der kleiner ist als ein Rohrradius (Rch) auf Höhe der Welle (1) zwischen denselben beiden Kontaktpunkten (P11, P12; P13, P14), die auf demselben Arm (4; 5) angeordnet sind, und wobei die Welle (1) eine Einführungsrampe (8) aufweist, die dafür ausgelegt ist, jeden ersten elastischen Arm (4) und jeden zweiten elastischen Arm (5), wenn die Platte (2) diese aufweist, radial zu verschieben, um die Führung der Platte (2) auf die Welle (1) zu ermöglichen.
  2. Drehteil (100) nach Anspruch 1, dadurch gekennzeichnet, dass der erste elastische Arm (4) und der zweite Arm (5) im Wesentlichen symmetrisch in Bezug auf eine Ebene sind, die durch die zweite Drehachse (D2) verläuft.
  3. Drehteil (100) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Welle (1) im Wesentlichen symmetrisch in Bezug auf eine Ebene ist, die durch die erste Drehachse (D1) verläuft.
  4. Drehteil (100) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Klemme (3) im freien Zustand einen Zylinder umschreibt, dessen Radius kleiner als jener eines Zylinders ist, der die radiale Abstützoberfläche (9) umschreibt.
  5. Drehteil (100) nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass jeder erste Arm (4) oder jeder zweite Arm (5) einen ausgehöhlten Zylindersektor (34; 35) mit einer Achse (C), die in Bezug auf die zweite Drehachse (D2) exzentrisch ist, umfasst.
  6. Drehteil (100) nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Platte (2) auf Höhe des ersten elastischen Arms (4) erste Antriebsmittel (21) und auf Höhe jedes zweiten elastischen Arms (5), wenn die Platte (2) diesen aufweist, zweite Antriebsmittel (22) umfasst und dass die ersten (21) und zweiten (22) Antriebsmittel Bereiche mit einem vorstehenden und/oder zurückspringenden Reliefprofil aufweisen, die dafür ausgelegt sind, mit einem Werkzeug mit komplementärem Profil zusammenzuwirken, um die Klemme (3) bei der Führung der Platte (2) auf die Welle (1) zu öffnen.
  7. Drehteil (100) nach Anspruch 6, dadurch gekennzeichnet, dass die ersten (21) und zweiten (22) Antriebsmittel in Bezug auf die zweite Drehachse (D2) symmetrisch sind.
  8. Drehteil (100) nach Anspruch 7, dadurch gekennzeichnet, dass die Platte (2) in ihrem starrsten Teil Haltemittel aufweist, um mit einem Zugwerkzeug zusammenzuwirken.
  9. Drehteil (100) nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die Platte (2) in der Nähe ihres Umfangs und in ihrem inneren Teil dritte (23) und vierte (24) Antriebsmittel umfasst.
  10. Drehteil (100) nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die Platte (2) auf ihrer unteren Fläche (21) und/oder oberen Fläche (22) einen Oberflächenrauheitszustand aufweist, der größer als 6,3 Mikrometer Ra ist, um mit einem Halte- und/oder Zugwerkzeug reibschlüssig zusammenzuwirken.
  11. Drehteil (100) nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass die Umfangsoberfläche (20) eine Zahnung ist, deren Drehachse mit der zweiten Drehachse (D2) zusammenfällt.
  12. Drehteil (100) nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass die Umfangsoberfläche (20) eine auf die zweite Drehachse (D2) bezogene Nockenfläche ist und einen Winkelbezug hat, der durch den ersten Arm (4) oder durch den zweiten Arm (5) gebildet ist.
  13. Drehteil (100) nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, dass die radiale Abstützoberfläche (9) und die Einführrampe (8) der Welle (1) zusammen einen Wulst (10) definieren, der dafür ausgelegt ist, die Platte (2) an der Welle (1) festzusetzen, wenn die Platte (2) abstützend an der Axialanschlag-Abstützoberfläche (7) der Welle (1) anliegt.
  14. Drehteil (100) nach Anspruch 13, dadurch gekennzeichnet, dass die radiale Abstützoberfläche (9) in Bezug auf den Wulst (10) hinterschnitten ist.
  15. Uhrwerk (200), umfassend mindestens ein Drehteil (100) nach einem der Ansprüche 1 bis 14, dadurch gekennzeichnet, dass der Aufbau des Drehteils (100) beschränkt ist auf die Welle (1) und die Platte (2), die zusammengefügt sind.
EP14172870.9A 2014-06-18 2014-06-18 Drehteil einer Uhr Active EP2957963B1 (de)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP14172870.9A EP2957963B1 (de) 2014-06-18 2014-06-18 Drehteil einer Uhr
CH00920/14A CH709792A2 (fr) 2014-06-18 2014-06-18 Mobile d'horlogerie.
CN201580031842.6A CN106537262B (zh) 2014-06-18 2015-06-05 钟表轮副
JP2016547098A JP6276864B2 (ja) 2014-06-18 2015-06-05 時計用ホイールセット
US15/309,452 US10365608B2 (en) 2014-06-18 2015-06-05 Timepiece wheel set
PCT/EP2015/062542 WO2015193123A1 (fr) 2014-06-18 2015-06-05 Mobile d'horlogerie
EP15727642.9A EP3158402B1 (de) 2014-06-18 2015-06-05 Drehteil einer uhr

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14172870.9A EP2957963B1 (de) 2014-06-18 2014-06-18 Drehteil einer Uhr

Publications (2)

Publication Number Publication Date
EP2957963A1 EP2957963A1 (de) 2015-12-23
EP2957963B1 true EP2957963B1 (de) 2017-10-25

Family

ID=50942598

Family Applications (2)

Application Number Title Priority Date Filing Date
EP14172870.9A Active EP2957963B1 (de) 2014-06-18 2014-06-18 Drehteil einer Uhr
EP15727642.9A Active EP3158402B1 (de) 2014-06-18 2015-06-05 Drehteil einer uhr

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP15727642.9A Active EP3158402B1 (de) 2014-06-18 2015-06-05 Drehteil einer uhr

Country Status (6)

Country Link
US (1) US10365608B2 (de)
EP (2) EP2957963B1 (de)
JP (1) JP6276864B2 (de)
CN (1) CN106537262B (de)
CH (1) CH709792A2 (de)
WO (1) WO2015193123A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11467539B2 (en) 2018-12-13 2022-10-11 Montres Breouet SA Timepiece display mobile component with friction adjustment mechanism

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CN107533319B (zh) 2015-03-11 2020-02-21 西铁城时计株式会社 钟表的动力传导体及钟表的动力传导体的制造方法
EP3396470B1 (de) * 2017-04-24 2020-01-01 ETA SA Manufacture Horlogère Suisse Mechanische bremsvorrichtung für drehteil einer uhr
JP6891622B2 (ja) * 2017-04-28 2021-06-18 セイコーエプソン株式会社 機械部品及び時計
JP6891646B2 (ja) 2017-06-07 2021-06-18 セイコーエプソン株式会社 機械式部品、時計
US10838366B2 (en) * 2017-09-14 2020-11-17 Timex Group Usa, Inc. Bidirectional MEMS driving arrangements with a force absorbing system
DE102017218026A1 (de) * 2017-10-10 2019-04-11 Zf Friedrichshafen Ag Sensorträger und Sensorbaugruppe
EP3489767A1 (de) * 2017-11-27 2019-05-29 Montres Breguet S.A. Magnetische zentrierungsvorrichtung einer welle in einem uhrwerk
EP3667435B1 (de) * 2018-12-10 2022-06-01 Montres Breguet S.A. Einstellsystem der position eines ersten gezahnten drehteils in bezug auf eine halterung, auf der dieser ersten gezahnten drehteil drehbar befestigt ist, und uhr, die ein solches system umfasst
EP3772673B1 (de) 2019-08-08 2022-04-06 ETA SA Manufacture Horlogère Suisse Indexierungselement für uhren
CH716553B1 (fr) * 2019-08-30 2023-03-15 Lvmh Swiss Mft Sa Zenith Succursale De Lvmh Swiss Mft Sa Mécanisme horloger de génération d'une friction limitant le couple transmis entre deux pièces rotatitves et ressort de friction pour un tel mécanisme.
EP3825779A1 (de) * 2019-11-21 2021-05-26 ETA SA Manufacture Horlogère Suisse Bewegliche uhrwerkskomponente mit einem durch reibung gehaltenen element
JP7428556B2 (ja) * 2020-03-16 2024-02-06 セイコーウオッチ株式会社 時計部品、ムーブメント及び時計
EP3907564A1 (de) * 2020-05-05 2021-11-10 ETA SA Manufacture Horlogère Suisse Indexierungselement für uhren
EP4280002A1 (de) * 2022-05-17 2023-11-22 Montres Breguet S.A. Chronographenmodul mit einem abnehmbaren rad

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11467539B2 (en) 2018-12-13 2022-10-11 Montres Breouet SA Timepiece display mobile component with friction adjustment mechanism

Also Published As

Publication number Publication date
EP3158402B1 (de) 2018-08-22
US10365608B2 (en) 2019-07-30
EP2957963A1 (de) 2015-12-23
US20170185040A1 (en) 2017-06-29
EP3158402A1 (de) 2017-04-26
JP2017503181A (ja) 2017-01-26
CN106537262A (zh) 2017-03-22
CN106537262B (zh) 2018-11-23
CH709792A2 (fr) 2015-12-31
JP6276864B2 (ja) 2018-02-07
WO2015193123A1 (fr) 2015-12-23

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