EP2177959A1 - Zeigerantriebsmechanismus - Google Patents

Zeigerantriebsmechanismus Download PDF

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Publication number
EP2177959A1
EP2177959A1 EP08166906A EP08166906A EP2177959A1 EP 2177959 A1 EP2177959 A1 EP 2177959A1 EP 08166906 A EP08166906 A EP 08166906A EP 08166906 A EP08166906 A EP 08166906A EP 2177959 A1 EP2177959 A1 EP 2177959A1
Authority
EP
European Patent Office
Prior art keywords
satellite
axis
gear
planet carrier
rotation
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
EP08166906A
Other languages
English (en)
French (fr)
Other versions
EP2177959B1 (de
Inventor
Fabrice Deschanel
Stéphane Maturel
Sylvain Cornibé
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.)
Audemars Piguet Renaud et Papi SA
Original Assignee
Audemars Piguet Renaud et Papi SA
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 Audemars Piguet Renaud et Papi SA filed Critical Audemars Piguet Renaud et Papi SA
Priority to EP20080166906 priority Critical patent/EP2177959B1/de
Publication of EP2177959A1 publication Critical patent/EP2177959A1/de
Application granted granted Critical
Publication of EP2177959B1 publication Critical patent/EP2177959B1/de
Not-in-force 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
    • G04B45/00—Time pieces of which the indicating means or cases provoke special effects, e.g. aesthetic effects
    • 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
    • G04B19/02—Back-gearing arrangements between gear train and hands
    • 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
    • G04B19/06—Dials
    • G04B19/08—Geometrical arrangement of the graduations
    • G04B19/082—Geometrical arrangement of the graduations varying from the normal closed scale

Definitions

  • the invention relates to a needle display mechanism, and in particular to a timepiece, or other display device, having a non-planar dial.
  • a timepiece conventionally comprises a driving member, a regulating member, and a gear mechanism, which serves to reduce the speed of movement of the regulating member and to transmit this reduced motor movement to a display member, such as a needle combined with a dial.
  • a conventional gear mechanism comprises a plurality of gear wheels with parallel axes.
  • the hands In a classic timepiece, the hands (hours, minutes, seconds, etc.) are driven in planes that are substantially parallel to one another, and each needle describes a circle in a plane parallel to that of the dial of the piece. that is, the conventional needle path is essentially two-dimensional. It is known to form the dial and the needles with a certain curvature to produce a more three-dimensional effect, but the trajectories of these curved needles remain essentially circular and two-dimensional.
  • One result that the present invention aims to achieve is a three-dimensional needle drive mechanism that allows a less complex and compact construction, and a smoother movement of the needles, without introducing additional friction.
  • the subject of the invention is a device according to claim 1, as well as a timepiece according to claim 15.
  • the preferred embodiments are described in the dependent claims 2 to 14.
  • the terms “gear”, “tooth”, “toothed” and “toothing” are understood to mean not only a toothed gear, but also any kind of known drive means (friction drive, for example). example) usable between drive elements whose axes of rotation are not parallel.
  • the term “needle” does not only include the pointed and narrow shape of a traditional display needle, but also any kind of shape that the skilled person knows to indicate the time by its position relative to the mechanism of his training and / or a dial.
  • the needle (3) is integral with a satellite wheel (2) which rotates around a ring gear (1), and the axis of rotation (11) of the satellite wheel (2) is inclined at an angle ( ⁇ ) relative to the axis of rotation (10) of the planet carrier (4) on which the satellite wheel (2) is mounted.
  • the satellite wheel (2) of the figure 1 turns around the crown (1) and outside the crown (1).
  • the satellite wheel (2) of the figure 2 turns around the corona (1), but inside the crown (1).
  • the particular trajectory (5) is determined on the one hand by the value of the angle ( ⁇ ) between the axis (11) of rotation of the satellite wheel (2) and the axis (10) of rotation of the carrier.
  • satellite (4) and secondly by the radius of curvature of the toothing of the satellite wheel (2) and the radius of curvature of the toothing of the crown (1).
  • the toothing of the satellite wheel (2) and that of the crown (1) have a circular curvature (that is to say a constant radius of curvature), but they can also have an elliptical curvature, or of any shape , as the toothing of the satellite wheel (2) remains substantially in engagement with that of the crown (1).
  • the terms "satellite wheel” and “crown” also include elements of any shape that allow the satellite wheel (2) and the crown (1) to mesh together. If the toothed sector of the crown (1) has a constant radius of curvature, the axis (10) of rotation of the planet carrier (4) can be static relative to the crown (1), which simplifies the construction of the mechanism .
  • a ring (1) non-circular (elliptical, for example, or shaped “potato”), having a set of teeth with a varying radius of curvature allows a trajectory (5) much more complex, but also requires an axis of rotation (11) of the satellite wheel (2) which is movable relative to the toothing of the crown (1).
  • Such relative movement can be achieved by providing the planet carrier with means which allow the displacement of the axis of rotation (10) of the planet wheel (2) in a plane substantially perpendicular to the axis of rotation (10) of the satellite wheel (2) and / or a plane which contains the toothing of the crown (1).
  • each display pointer (3) is mounted integral with a satellite wheel (2) at an angle ( ⁇ ) of the axis of the planet carrier on which it is mounted.
  • FIG. 10 shows how a device according to the invention can be made in the context of a timepiece, such as a watch, having two needles both driven in a retrograde manner.
  • a timepiece such as a watch
  • two mechanisms driven by the same motor and gear are arranged on a common frame (8), each mechanism having its own retrograde escapement and its own needle drive gear.
  • the two mechanisms share a single crown (1), which saves space.
  • each tooth (20) of the satellite wheel is formed with an elastic portion (21), to eliminate any set of pinion. It is also possible to construct the satellite wheel (2) such that each second, each third, etc., tooth is a catch-up tooth.
  • the use such elastic teeth in the context of the invention has an additional advantage: the geometry of the inclined toothings of the crown and the satellite wheel is relatively complicated to manufacture in a very precise manner, and the use of the elastic teeth can compensate the game due to any imprecision of manufacture.
  • the figure 13 shows in side view section XII-XII of the satellite wheel (2) of the figure 12 .
  • the angle ( ⁇ ) of the toothing relating to the axis of rotation (11) of the satellite wheel (2) is here denoted by ⁇ , but is not shown in the figures.
  • the angles ⁇ and ⁇ , as well as the geometry of the teeth, are chosen in order to achieve an effective gearing between the satellite wheel (2) and the crown (1) at the angle ⁇ .
  • These angles of inclination of the teeth of the crown and the satellite wheel are also visible on the figure 4 .
  • the angles shown are for example only, and can be chosen from any combination of angles ( ⁇ , ⁇ , ⁇ ) allowing the realization of the desired trajectory (5).

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Electromechanical Clocks (AREA)
EP20080166906 2008-10-17 2008-10-17 Zeigerantriebsmechanismus Not-in-force EP2177959B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20080166906 EP2177959B1 (de) 2008-10-17 2008-10-17 Zeigerantriebsmechanismus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20080166906 EP2177959B1 (de) 2008-10-17 2008-10-17 Zeigerantriebsmechanismus

Publications (2)

Publication Number Publication Date
EP2177959A1 true EP2177959A1 (de) 2010-04-21
EP2177959B1 EP2177959B1 (de) 2011-05-11

Family

ID=40473806

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20080166906 Not-in-force EP2177959B1 (de) 2008-10-17 2008-10-17 Zeigerantriebsmechanismus

Country Status (1)

Country Link
EP (1) EP2177959B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104834203A (zh) * 2015-04-15 2015-08-12 宋建华 可弯曲的钟表
US11493883B2 (en) 2018-07-24 2022-11-08 Harry Winston Sa Timepiece drive mechanism

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1011340C2 (nl) * 1999-02-18 2000-08-22 Ruth Djatmiko Wijzerinstrument.
WO2002101473A1 (de) 2001-06-13 2002-12-19 Gottfried Wolf Uhr
WO2008101802A2 (fr) * 2007-02-08 2008-08-28 Complitime Sa Mouvement de montre

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1011340C2 (nl) * 1999-02-18 2000-08-22 Ruth Djatmiko Wijzerinstrument.
WO2002101473A1 (de) 2001-06-13 2002-12-19 Gottfried Wolf Uhr
WO2008101802A2 (fr) * 2007-02-08 2008-08-28 Complitime Sa Mouvement de montre

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104834203A (zh) * 2015-04-15 2015-08-12 宋建华 可弯曲的钟表
US11493883B2 (en) 2018-07-24 2022-11-08 Harry Winston Sa Timepiece drive mechanism

Also Published As

Publication number Publication date
EP2177959B1 (de) 2011-05-11

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