EP2058714B1 - Couronne pour pièce d'horlogerie comprenant un mécanisme de débrayage - Google Patents

Couronne pour pièce d'horlogerie comprenant un mécanisme de débrayage Download PDF

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Publication number
EP2058714B1
EP2058714B1 EP07120279A EP07120279A EP2058714B1 EP 2058714 B1 EP2058714 B1 EP 2058714B1 EP 07120279 A EP07120279 A EP 07120279A EP 07120279 A EP07120279 A EP 07120279A EP 2058714 B1 EP2058714 B1 EP 2058714B1
Authority
EP
European Patent Office
Prior art keywords
elastically deformable
crown
centring
ring
drive ring
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
EP07120279A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2058714A1 (fr
Inventor
Pierre-Jean Bonnet
Georges Zimmermann
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.)
Meco SA
Original Assignee
Meco 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 Meco SA filed Critical Meco SA
Priority to DE602007001696T priority Critical patent/DE602007001696D1/de
Priority to AT07120279T priority patent/ATE437388T1/de
Priority to EP07120279A priority patent/EP2058714B1/fr
Priority to TW097138973A priority patent/TW200931211A/zh
Priority to US12/249,074 priority patent/US7959352B2/en
Priority to SG200807790-1A priority patent/SG152179A1/en
Priority to KR1020080107851A priority patent/KR101451990B1/ko
Priority to JP2008286255A priority patent/JP5363784B2/ja
Priority to CN2008101745783A priority patent/CN101430539B/zh
Publication of EP2058714A1 publication Critical patent/EP2058714A1/fr
Application granted granted Critical
Publication of EP2058714B1 publication Critical patent/EP2058714B1/fr
Priority to HK09110111.4A priority patent/HK1132557A1/xx
Priority to US13/071,314 priority patent/US8142070B2/en
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
    • G04B3/00—Normal winding of clockworks by hand or mechanically; Winding up several mainsprings or driving weights simultaneously
    • 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

Definitions

  • the present invention relates to a crown for a timepiece comprising a disengaging mechanism. More precisely, the present invention relates to such a crown comprising a mechanism intended to prevent the user from damaging the movement of the timepiece, in particular when he arms the mainspring.
  • a crown of the kind mentioned above is known, for example, from the European patent application EP 1 586 960 in the name of the Claimant.
  • Such a crown essentially comprises a cap delimited downwards by a circular skirt provided on its outer surface with a plurality of grooves for facilitating the operation of the crown by the user.
  • This circular skirt delimits a hollow inner housing in which is housed the disengaging mechanism.
  • This clutch mechanism comprises among others a rigid ring having on its inner periphery a plurality of notches intended to cooperate with one or more spring elements of generally circular shape to perform the disengaging function. Indeed, the notched ring is secured to the ring while the spring elements are fixed on a barrel on which is screwed a winding stem which acts on the winding mechanism of the mainspring.
  • the resisting torque opposed by the spring elements is less than a predetermined value, they are rotated by the rigid ring under the effect of the actuation of the crown by the user.
  • the spring elements drive the barrel on which they are mounted and therefore the winding stem.
  • the resistant torque opposed by the elements springs becomes greater than the predetermined value because the barrel spring is fully armed, said spring elements will deform elastically in response to the actuation of the rigid ring and will escape the latter by sliding.
  • the user-operated crown will turn in a vacuum.
  • the barrel spring is thus protected against any excessive winding which could damage it.
  • the barrel has at its upper end a protruding portion of shape for example square and fits in a hole, also square, made in the springs by which said springs are made integral with said barrel.
  • the crown described above has presented a problem.
  • the springs rigidly coupled with said barrel, are no longer properly centered with respect to the notched rigid ring.
  • the springs can then, when the notched ring is rotated, move from their normal elastic deformation regime to a regime of plastic deformation in which they undergo irreversible damage.
  • There is then a significant decrease in the value of the threshold torque which determines the transition between the state in which the notched ring drives the springs in rotation and the state in which this notched ring slides on said springs without driving them, which As a result, the user is no longer able to remount the cylinder spring optimally.
  • the object of the present invention is to remedy the problems of resistance of the abovementioned materials, tribological problems as well as others by providing a new type of disengaging mechanism for a timepiece winding crown whose value of the torque that marks the disengagement between the notched rigid ring and the spring elements remains stable over time.
  • the present invention relates to a winding crown for a timepiece, this ring comprising a disengaging mechanism comprising a rigid drive ring secured to the ring and cooperating with at least one elastically deformable element integral with a a barrel at one end of which is fixed a winding stem, the rigid ring driving the elastic element deformable in at least one direction of rotation until the resistant torque opposed by said elastic element exceeds a threshold value beyond this elastic element is deformed so as to interrupt its driving connection with the rigid ring, the ring being characterized in that the elastically deformable element comprises means which allow its centering relative to the rigid drive ring .
  • the present invention provides a crown for a timepiece whose elastically deformable element of the disengaging mechanism comprises its own centering means relative to the rigid drive ring secured to the crown.
  • Axial misalignment between the barrel whose elastically deformable element is integral and the crown therefore has no effect on the centering of this deformable element relative to the drive ring. Therefore, in the case where such misalignment is observed, the deformable element will remain in a state where it deforms elastically under the effect of the stresses exerted by the rigid ring and will not enter a field of plastic deformation in which it could deteriorate irreversibly.
  • the operating characteristics of the disengaging mechanism according to the invention will be retained over time. In particular, there is no noticeable drop in the value of the couple marking the passage between the state where the rigid ring is engaged with the deformable element and the state where the rigid ring is disengaged from the deformable element.
  • the elastically deformable element is of circular shape and the centering means are arranged at least diametrically opposite on the perimeter of said elastically deformable element.
  • the centering means are provided in three places distributed at regular intervals on the perimeter of the elastically deformable element.
  • the forces exerted on the elastically deformable element are distributed optimally in the case where the barrel is not perfectly aligned axially with the crown.
  • the present invention proceeds from the general inventive idea of providing a crown for a timepiece comprising a disengaging mechanism for protecting the movement of the timepiece against excessive winding of the mainspring, this disengaging mechanism comprising an elastically deformable element which has means ensuring its perfect centering with respect to the rigid ring; training.
  • this disengaging mechanism comprising an elastically deformable element which has means ensuring its perfect centering with respect to the rigid ring; training.
  • FIG. 1 A first example of a disengaging mechanism according to the invention is shown in connection with the figure 1 .
  • this disengaging mechanism comprises an elastically deformable element 2 and a rigid drive ring 4.
  • the elastically deformable element 2 is typically an element of generally circular shape. It comprises a base 6 also substantially circular and pierced at its center with a hole 8 of shape for example square by which it is fixed on a projecting portion 10 of complementary shape to that of the hole 8 of a barrel 12 (see figure 3 ) at the end of which is fixed a winding stem (not shown).
  • the spring element 2 comprises means which make it possible to ensure its centering with respect to the rigid driving ring 4.
  • these centering means are in the form of three Y-shaped arms 14, 16 and 18 which extend radially from the base 6 and which are regularly spaced angularly from each other.
  • the spring element 2 also comprises means which allow its temporary coupling with the rigid drive ring 4.
  • these coupling means are in the form of parts in the form of ⁇ . These parts 20 are three in number, each disposed between two successive centering arms.
  • Each coupling piece 20 comprises a head 22 and two legs 24 which define an open surface towards the inside of the spring element 2.
  • the coupling arms 14-18 each comprise a section 14a-18a which extends radially from the base 6 of the spring element 2 and which separates into two symmetrical branches 14b-18b which go into position. 'apart from each other.
  • the two branches 14b-18b of each arm 14-18 are joined together by a centering portion 14c-18c in the shape of a circular arc which is extended at its free ends by connecting portions 26 which allow the arms to be connected. centering 14-18 at the feet 24 of the temporary coupling parts 20.
  • the rigid drive ring 4 has on its inner perimeter an uninterrupted succession of bumps 28 and recesses 30 which respectively define first and second inner diameters D1 and D2, the inner diameter D1 being smaller than the inner diameter D2 .
  • the centering portions 14c-18c in an arc of the arms 14-18 define a first outer radius R'1 of the spring element 2 which corresponds to a diameter equal to the first inner diameter D1 of the rigid drive ring 4.
  • the length of the centering portions 14c-18c is such that these portions 14c-18c always rest on two bumps 28 of the inner perimeter of the drive ring 4, it will be understood that the position of these centering portions 14c-18c relative to the drive ring 4 will remain unchanged regardless of the angular position of said drive ring 4.
  • the bumps 28 of the drive ring 4 thus constitute for the spring element 2 a raceway along which move the centering portions 14c-18c.
  • the spring element 2 is thus perfectly positioned relative to the center of the rigid drive ring 4, so that any axial misalignment of the barrel 12 on which is fixed said spring element 2 with respect to the ring 32 of which said ring rigid 4 is integral does not affect the relative positioning this spring element 2 and this rigid ring 4.
  • the spring element 2 therefore does not risk entering a zone of plastic deformation in which it would suffer irreversible damage which could cause a decrease in the value of the threshold torque which marks the passage between the state where the rigid ring 4 drives the spring element 2 and the state where the spring element 2 deforms elastically to escape the grip of the rigid ring 4 by loss of adherent
  • the drive of the spring element 2 by the rigid ring 4 is ensured by the cooperation between the coupling parts 20 and the bumps 28.
  • the top of the heads 22 of the coupling parts 20 defines a second radius outside R'2 of the spring element 2 which corresponds to a diameter greater than the first inner diameter D1 of the rigid ring 4.
  • the rigid ring 4 has no longer taken on the spring element 2 and the ring 32 turn in the void.
  • the coupling parts 20 work partly in compression along a radius in which the spring element 2 fits and not only in a direction tangential to the perimeter of said spring element 2, which makes it possible to limit the fatigue of said elements. coupling parts 20 and also to increase their resistance to wear.
  • FIG. figure 2 A second embodiment of the disengaging mechanism according to the invention is illustrated in FIG. figure 2 . It comprises an elastically deformable element 200 and a rigid drive ring 400.
  • the rigid drive ring 400 has the same shape and structure as the rigid ring 4 described in connection with the figure 1 . It comprises an uninterrupted succession of bumps 280 and recesses 300 which respectively define a first and a second internal diameter D1 and D2, the inner diameter D1 being smaller than the inner diameter D2.
  • the elastically deformable element 200 is of the spring type and is generally circular in shape. It comprises a base 600 also substantially circular and pierced at its center with a square hole 800 through which it is fixed on the protruding portion 10 of square outline of the barrel 12 (see figure 3 ) at the end of which is fixed the winding stem (not shown).
  • the base 600 of the spring element 200 is extended by two bent portions 210 and 220 diametrically opposed, which continue by arms 230 and 240 of shape close to that of a circular arc. As can be seen from the examination of the figure 2 the arms 230, 240 both develop counterclockwise. Of course, it would be quite possible for the arms 230, 240 to extend in the same clockwise direction.
  • each of the two arms 230 and 240 comprises a centering portion 230a, 240a and a coupling portion 230b, 240b.
  • the centering portions 230a, 240a have an arcuate shape and define a first outer diameter D'1 of the spring member 200 which is equal to the first inner diameter D1 of the rigid drive ring 400.
  • the length of the centering portions 230a, 240a is such that these centering portions 230a, 240a always rest on two successive bumps 280 of the inner perimeter of the rigid drive ring 400 and whatever the relative position of said ring 400 with respect to the spring element 200.
  • the coupling portions 230b, 240b of the arms 230, 240 are progressively closer to the center of the spring element 200 and have towards their free end a protuberance 230c, 240c whose point the higher defines a second outer diameter D'2 of the spring member 200 which is greater than the first inner diameter D1 of the rigid ring 400.
  • the rigid ring 400 when the rigid ring 400 is rotated, it in turn drives the spring element 200 abutting by its bumps 280 against the protuberances 230c, 240c of the coupling portions 230b, 240b of the arms 230, 240 of the spring element 200.
  • FIG. figure 3 An example of integration of the disengaging mechanism according to the invention in a winding crown 32 is illustrated in FIG. figure 3 .
  • the ring 32 In its hollow inner housing, the ring 32 has a circular shoulder 34 which delimits firstly a bearing surface 36 for a cover 38 mounted with the interposition of a seal 40 in an opening 42 formed in said ring 32, and on the other hand a stop surface 44 for the rigid drive ring 4, 400 and for one, and preferably two spring elements 2, 200 mounted superimposed.
  • the barrel 12 has a main portion 46 of cylindrical shape in which is made a threaded hole 48 for mounting a winding stem (not shown).
  • the main part 46 of the barrel 12 is surmounted by a disk-shaped head 50 whose diameter is greater than the diameter of the main portion 46.
  • the head 50 is itself surmounted by the projecting portion 10 on which are positioned the two spring elements 2, 200.
  • the two spring elements 2, 200 are partially supported on the head 50 of the barrel 12 and partly on a sleeve 52 which is mounted in the inner volume of the ring 32 by any suitable means such as driving, welding, gluing or other.
  • the crown 32 with its disengaging mechanism is mounted on the middle part of a timepiece via a tube 54 fixed on said case middle for example by driving.
  • the sleeve has two circular grooves 56 and 58 in which are housed two seals 60 and 62 to seal between the ring 32 and the sleeve 52 on the one hand, and between the sleeve 52 and the tube 54 of somewhere else.
  • a screw 64 is screwed into the protruding portion 10 so that the springs 2, 200 are held between the head 66 of the screw and the head 50 of the barrel 12.
  • the rigid drive ring 4, 400 is integral with the ring 32 while the spring elements 2, 200 are integral with the barrel 12.
  • the present invention is not limited to the embodiments which have just been described and that various simple modifications and variants may be envisaged by those skilled in the art without departing from the scope of the invention such that defined by the appended claims.
  • the spring elements comprise coupling parts deforming in a direction parallel to the tangent to the circle in which said spring elements are inscribed.
EP07120279A 2007-11-08 2007-11-08 Couronne pour pièce d'horlogerie comprenant un mécanisme de débrayage Active EP2058714B1 (fr)

Priority Applications (11)

Application Number Priority Date Filing Date Title
DE602007001696T DE602007001696D1 (de) 2007-11-08 2007-11-08 Aufzugskrone für Uhr, die einen Mechanismus mit Drehmomentkupplung umfasst
AT07120279T ATE437388T1 (de) 2007-11-08 2007-11-08 Aufzugskrone für uhr, die einen mechanismus mit drehmomentkupplung umfasst
EP07120279A EP2058714B1 (fr) 2007-11-08 2007-11-08 Couronne pour pièce d'horlogerie comprenant un mécanisme de débrayage
TW097138973A TW200931211A (en) 2007-11-08 2008-10-09 Timepiece crown including an uncoupling mechanism
US12/249,074 US7959352B2 (en) 2007-11-08 2008-10-10 Timepiece crown including an uncoupling mechanism
SG200807790-1A SG152179A1 (en) 2007-11-08 2008-10-15 Timepiece crown including an uncoupling mechanism
KR1020080107851A KR101451990B1 (ko) 2007-11-08 2008-10-31 언커플링 메커니즘을 포함하는 시계 크라운
JP2008286255A JP5363784B2 (ja) 2007-11-08 2008-11-07 解放機構を含む時計竜頭
CN2008101745783A CN101430539B (zh) 2007-11-08 2008-11-10 含有脱开机构的计时器表冠
HK09110111.4A HK1132557A1 (en) 2007-11-08 2009-10-29 Timepiece crown including an uncoupling mechanism
US13/071,314 US8142070B2 (en) 2007-11-08 2011-03-24 Timepiece crown including an uncoupling mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07120279A EP2058714B1 (fr) 2007-11-08 2007-11-08 Couronne pour pièce d'horlogerie comprenant un mécanisme de débrayage

Publications (2)

Publication Number Publication Date
EP2058714A1 EP2058714A1 (fr) 2009-05-13
EP2058714B1 true EP2058714B1 (fr) 2009-07-22

Family

ID=39638650

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07120279A Active EP2058714B1 (fr) 2007-11-08 2007-11-08 Couronne pour pièce d'horlogerie comprenant un mécanisme de débrayage

Country Status (10)

Country Link
US (2) US7959352B2 (ko)
EP (1) EP2058714B1 (ko)
JP (1) JP5363784B2 (ko)
KR (1) KR101451990B1 (ko)
CN (1) CN101430539B (ko)
AT (1) ATE437388T1 (ko)
DE (1) DE602007001696D1 (ko)
HK (1) HK1132557A1 (ko)
SG (1) SG152179A1 (ko)
TW (1) TW200931211A (ko)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH705276B1 (fr) * 2007-12-28 2013-01-31 Chopard Technologies Sa Organe d'entraînement et de transmission pour un échappement à ancre, plateau et échappement en étant équipés, et pièce d'horlogerie les comportant.
EP2367075B1 (fr) * 2010-03-17 2017-07-26 Meco S.A. Couronne de remontage pour pièce d'horlogerie
CN102844617B (zh) 2010-04-19 2016-03-16 皇家飞利浦电子股份有限公司 Led前照明装置
JP5411081B2 (ja) * 2010-07-30 2014-02-12 セイコーインスツル株式会社 手巻き輪列及び該輪列を備えた時計用ムーブメント、並びに該ムーブメントを備えた時計
JP5414634B2 (ja) * 2010-07-30 2014-02-12 セイコーインスツル株式会社 手巻き輪列及び該輪列を備えた時計用ムーブメント、並びに該ムーブメントを備えた時計
FR2974430B1 (fr) * 2011-04-19 2013-05-10 Cheval Freres Sas Couronne dynamometrique de remontoir de montre
CN102854008A (zh) * 2012-08-24 2013-01-02 浙江工业大学 发条式定时器的检验装置
CH709740B1 (fr) * 2014-06-05 2018-04-13 Richemont Int Sa Couronne débrayable pour pièce d'horlogerie.
KR102527901B1 (ko) * 2016-12-16 2023-05-03 삼성전자주식회사 전자 장치에 있어서 입력 장치 및 그 제어 방법
US11441611B2 (en) 2019-02-27 2022-09-13 Carefusion 303, Inc. Torque limiting connector
EP3705949A1 (fr) * 2019-03-05 2020-09-09 ETA SA Manufacture Horlogère Suisse Mecanisme limiteur de couple d'horlogerie
CN110412856A (zh) * 2019-07-19 2019-11-05 惠安江森水产设备开发有限公司 一种方便调节钮扩展调节的智能机械表
EP4137893A1 (fr) * 2021-08-20 2023-02-22 Montres Breguet S.A. Dispositif â déploiement de type diaphragme, notamment pour l' horlogerie

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Also Published As

Publication number Publication date
KR101451990B1 (ko) 2014-10-21
US7959352B2 (en) 2011-06-14
EP2058714A1 (fr) 2009-05-13
ATE437388T1 (de) 2009-08-15
CN101430539B (zh) 2012-06-06
CN101430539A (zh) 2009-05-13
US20090122657A1 (en) 2009-05-14
DE602007001696D1 (de) 2009-09-03
TW200931211A (en) 2009-07-16
JP5363784B2 (ja) 2013-12-11
KR20090048326A (ko) 2009-05-13
US8142070B2 (en) 2012-03-27
JP2009115800A (ja) 2009-05-28
HK1132557A1 (en) 2010-02-26
US20110176394A1 (en) 2011-07-21
SG152179A1 (en) 2009-05-29

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