EP1513028B1 - Aufzugskrone für mechanische Uhr - Google Patents

Aufzugskrone für mechanische Uhr Download PDF

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Publication number
EP1513028B1
EP1513028B1 EP20040005384 EP04005384A EP1513028B1 EP 1513028 B1 EP1513028 B1 EP 1513028B1 EP 20040005384 EP20040005384 EP 20040005384 EP 04005384 A EP04005384 A EP 04005384A EP 1513028 B1 EP1513028 B1 EP 1513028B1
Authority
EP
European Patent Office
Prior art keywords
crown
winding
ring
winding crown
timepiece
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
EP20040005384
Other languages
English (en)
French (fr)
Other versions
EP1513028A2 (de
EP1513028A3 (de
Inventor
Pascal Cavicchiolo
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.)
Patek Philippe SA Geneve
Original Assignee
Patek Philippe SA Geneve
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 Patek Philippe SA Geneve filed Critical Patek Philippe SA Geneve
Publication of EP1513028A2 publication Critical patent/EP1513028A2/de
Publication of EP1513028A3 publication Critical patent/EP1513028A3/de
Application granted granted Critical
Publication of EP1513028B1 publication Critical patent/EP1513028B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • G04B3/00—Normal winding of clockworks by hand or mechanically; Winding up several mainsprings or driving weights simultaneously
    • G04B3/06—Keys or the like with means preventing overwinding
    • 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
    • G04B3/00—Normal winding of clockworks by hand or mechanically; Winding up several mainsprings or driving weights simultaneously
    • G04B3/04—Rigidly-mounted keys, knobs or crowns
    • G04B3/041—Construction of crowns for rotating movement; connection with the winding stem; winding stems
    • 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
    • G04B37/00—Cases
    • G04B37/08—Hermetic sealing of openings, joints, passages or slits
    • G04B37/10—Hermetic sealing of openings, joints, passages or slits of winding stems

Definitions

  • the present invention relates to a winding crown for a mechanical timepiece, more particularly to a winding crown comprising a torque limiting device for preventing parts of the timepiece such as the mainspring, the winding rod, the wheels, etc. break when the user continues to turn the crown after the mainspring has been fully raised.
  • a winding crown comprising an elastic friction disk driving up to a certain winding threshold of the motor spring a fixed plate of the winding rod.
  • This crown may certainly have a low height but, so that the leaf spring that constitutes the elastic friction disk has a sufficient sensitivity, the radial dimension of it-to, and therefore the crown, must be relatively large.
  • the winding member comprises elastic friction means constituted by two opposed cylindrical springs extending radially relative to the winding rod.
  • elastic friction means constituted by two opposed cylindrical springs extending radially relative to the winding rod.
  • the present invention aims to remedy the aforementioned drawbacks and proposes, for this purpose, a winding crown according to the appended claim 1, particular embodiments being defined in the dependent claims, as well as a timepiece incorporating it.
  • a winding crown according to the invention for a timepiece mechanical comprises a cap 1 and, mounted in the cap 1 coaxially thereto, a driving part 2 and a driven part 3.
  • the drive part 2 is a ring driven into the cap 1 and therefore integral with the latter.
  • the driven part 3 consists of a transverse plate, that is to say perpendicular to the axis 4 of the ring, and a central fastening element 32 formed in one piece with the plate 30 and projecting axially from the lower face 34 of the plate 30 facing the middle part 5 of the timepiece.
  • the central fastening element 32 has an axial threaded bore 36 adapted to receive a corresponding threaded end of the winding rod (not shown) of the timepiece to make the plate 30 integral with this winding rod and thus allow it to control the torsion of the mainspring.
  • the ring 2 comprises cavities 20, eight in number in the example shown, regularly distributed around the axis 4 of the ring and each housing a coil compression spring 22 and an associated friction member 24.
  • Each member friction 24 is in the form of a pin or snap ball pushed parallel to the axis 4 by its respective spring 22 against the lower face 34 of the plate 30, and cooperates with a corresponding cell 38 As long as a predetermined tension threshold of the mainspring has not been reached, the springs 22 hold the friction members 24 in the respective cells 38 during reassembly, so that the torque rotation of the ring 2 is transmitted to the plate 30.
  • the friction members 24 are erased in the respective cavities 20, the force of the springs 22 no longer being sufficient to overcome the resistance of the plate 30 , and begin to slide on the lower face 34 of the plate 30, which is then no longer driven.
  • This limitation of the torque applied to the plate 30 makes it possible to prevent certain parts of the timepiece, in particular the mainspring, the winding rod and the wheels, from being subjected to excessive stresses.
  • the friction members 24 produce at each passage in a cell 38 a "click" indicating to the user that the mainspring is completely reassembled.
  • the winding crown according to the invention is sealed by first and second O-rings 6, 7 held in respective housings 8, 9 formed in the ring 2.
  • the first O-ring 6 seals between the ring 2 and a ring.
  • crown tube 10 driven into the middle 5 of the timepiece and surrounding the winding rod.
  • the second O-ring 7 seals between the ring 2 and the cap 1.
  • the winding crown according to the invention has several advantages over conventional torque limiting crowns.
  • the force and therefore the dimensions of each spring can be relatively low which reduces the axial and radial size of the ring.
  • this winding crown can be easily sealed, as previously indicated.

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

Claims (10)

  1. Aufzugskrone für eine mechanische Uhr mit einer Vorrichtung zur Drehmomentbegrenzung wobei diese Vorrichtung zur Drehmomentbegrenzung ein erstes Element (2) und ein zweites Element (30) umfasst, von denen das eine dazu bestimmt ist, als Antriebselement, das andere als angetriebenes Element, das angeordnet ist, um der Regelung der Torsion der Antriebsfeder der Uhr zu dienen, wobei das erste Element (2) mehrere Hohlräume (20) umfasst, die je eine Feder (22) und ein damit verbundenes Reibungselement (24) beherbergen, dadurch gekennzeichnet, dass jedes Reibungselement (24) angeordnet ist, um durch seine Feder (22) parallel zur Drehachse (4) der Krone gegen das zweite Element (30) gedrückt zu werden.
  2. Aufzugskrone nach Anspruch 1, dadurch gekennzeichnet, dass die Hohlräume (20) regelmässig um die Drehachse (4) der Krone herum verteilt sind.
  3. Aufzugskrone nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Reibungselemente (24) einrastende Elemente sind, die mit entsprechenden Öffnungen (38) zusammenwirken, die im zweiten Element (30) ausgebildet sind.
  4. Aufzugskrone nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Federn (22) Schraubenfedern sind.
  5. Aufzugskrone nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das erste Element (2) ein Antriebsring und das zweite Element (30) eine zum Ring (2) koaxiale angetriebene Scheibe (30) ist.
  6. Antriebskrone nach Anspruch 5, dadurch gekennzeichnet, dass sie ausserdem eine Haube (1) umfasst, in deren Innerem der Ring (2) und die Scheibe (30) montiert sind, wobei letztere koaxial zur Haube (1) sind, dadurch, dass der Ring (2) fest mit der Haube (1) verbunden ist, und dadurch, dass ein sich axial von der Scheibe (30) her erstreckendes Befestigungselement (32) gestattet, die Scheibe (30) fest mit einer Aufzugswelle der Uhr zu verbinden.
  7. Aufzugskrone nach Anspruch 6, dadurch gekennzeichnet, dass sie ausserdem eine Dichtung (7) zwischen dem Ring (2) und der Haube (1) umfasst.
  8. Mechanische Uhr mit einer Aufzugskrone nach einem der Ansprüche 1 bis 7.
  9. Mechanische Uhr nach Anspruch 8, dadurch gekennzeichnet, dass die Aufzugskrone dicht ist.
  10. Mechanische Uhr nach Anspruch 8, dadurch gekennzeichnet, dass eine Dichtung (6) zwischen dem ersten Element (2) der Aufzugskrone und einem am Gehäusemittelstück (5) der Uhr befestigten Kronentubus (10) vorgesehen ist.
EP20040005384 2003-09-01 2004-03-06 Aufzugskrone für mechanische Uhr Expired - Lifetime EP1513028B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH14942003 2003-09-01
CH14942003A CH696823A5 (fr) 2003-09-01 2003-09-01 Couronne de remontage pour pièce d'horlogerie mécanique.

Publications (3)

Publication Number Publication Date
EP1513028A2 EP1513028A2 (de) 2005-03-09
EP1513028A3 EP1513028A3 (de) 2010-05-19
EP1513028B1 true EP1513028B1 (de) 2012-08-01

Family

ID=34120762

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20040005384 Expired - Lifetime EP1513028B1 (de) 2003-09-01 2004-03-06 Aufzugskrone für mechanische Uhr

Country Status (4)

Country Link
EP (1) EP1513028B1 (de)
CH (1) CH696823A5 (de)
DE (1) DE04005384T1 (de)
HK (1) HK1070699A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH697270B1 (fr) * 2004-01-28 2008-07-31 Richemont Int Sa Dispositif de remontoir.
EP3828641B1 (de) * 2019-11-29 2022-07-20 Meco S.A. Drückerkrone für uhr

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US352257A (en) * 1886-11-09 Teeeitoey
US2311230A (en) * 1942-04-07 1943-02-16 Hill Charles Spring winding device
FR917982A (fr) 1944-11-27 1947-01-27 Dispositif de remontage fiexible applicable notamment aux petites montres
US2571879A (en) * 1946-07-25 1951-10-16 Hil Jon Safety Crown Corp Overload release coupling
CH274344A (de) * 1949-02-04 1951-03-31 Weis August Aufziehvorrichtung für die mit Aufziehwelle versehene Triebfeder von Federtriebwerken.
US2927420A (en) * 1958-04-21 1960-03-08 Hil Jon Safety Crown Corp Waterproof watch winding means

Also Published As

Publication number Publication date
EP1513028A2 (de) 2005-03-09
CH696823A5 (fr) 2007-12-14
DE04005384T1 (de) 2005-08-18
HK1070699A1 (en) 2005-06-24
EP1513028A3 (de) 2010-05-19

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