EP3805869A1 - Couronne vissée - Google Patents

Couronne vissée Download PDF

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Publication number
EP3805869A1
EP3805869A1 EP19202189.7A EP19202189A EP3805869A1 EP 3805869 A1 EP3805869 A1 EP 3805869A1 EP 19202189 A EP19202189 A EP 19202189A EP 3805869 A1 EP3805869 A1 EP 3805869A1
Authority
EP
European Patent Office
Prior art keywords
crown
screwed
tube
sub
housing
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.)
Pending
Application number
EP19202189.7A
Other languages
German (de)
English (en)
French (fr)
Inventor
Hervé AVRIL
Rémy THIRY
Ricardo MARCOS
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 EP19202189.7A priority Critical patent/EP3805869A1/fr
Priority to CN202010869965.XA priority patent/CN112631108B/zh
Publication of EP3805869A1 publication Critical patent/EP3805869A1/fr
Pending 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
    • G04B3/04—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
    • G04B37/103—Hermetic sealing of openings, joints, passages or slits of winding stems by screwing the crown onto the case
    • 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

Definitions

  • the invention relates to a screwed crown for a watch case comprising a middle part with at least one through housing for receiving said screwed crown, which screwed crown comprises a tube arranged to be inserted into said housing in an axial direction around a crown axis, and said screwed crown being arranged to seal off said housing, said screwed crown comprising a sub-assembly comprising a crown body that can be handled by a user, said sub-assembly being movable axially in said axial direction with respect to said tube, and said sub-assembly comprising at least one spring mechanism with at least one spring mounted in compression in a chamber and extending in said axial direction.
  • the invention also relates to a watch case comprising at least one housing for receiving a screwed crown, and a screwed crown designed to cooperate with said housing and to close it in a sealed manner.
  • the invention also relates to a watch comprising such a watch case.
  • the invention also relates to a method of mounting, in a watch case, such a screwed crown.
  • Screw-down crowns are commonly used to equip watches with the aim of improving their sealing at the passage of a control member, such as a winding or control rod.
  • This type of crown has the particularity of being able to take an unscrewed position in which the watch can be wound, time-set, adjusted, or other, and a screwed position in which the crown is screwed and blocked on a driven or screwed tube. in the middle of the watch case in order to compress a gasket, thus improving the watertightness of the watch.
  • the screwed position is therefore that which corresponds to the normal position when the watch is worn and which is always roughly the same, apart from the wear of the seal.
  • These screwed crowns include a spring, against which the screwing takes place. Most of the time this spring is a coil spring, which bears on an inner surface of the crown, and the friction of the last strand of this spring on this surface causes wear, and therefore pollution of the crown mechanism, or even of the watch, by wear particles, which must be avoided.
  • the object of the invention is in particular to overcome the drawback associated with the wear caused by the end of the spring, and thus to provide a screwed crown that is more reliable than those known to date.
  • the invention relates to a screwed crown according to claim 1.
  • the invention also relates to a watch case comprising at least one housing for receiving a screwed crown, and a screwed crown designed to cooperate with said housing and to close it in a sealed manner.
  • the invention also relates to a watch comprising such a watch case.
  • the invention also relates to a method of mounting, in a watch case, such a screwed crown.
  • the invention relates to a screw-down crown 100 for a watch case 200.
  • This watch case 200 conventionally comprises a middle part 110, with at least one through housing 90 for receiving the screwed crown 100.
  • This screwed crown 100 comprises a tube 5, which is arranged to be inserted into the housing 90 in an axial direction around a crown axis. D.
  • the screwed crown 100 is designed to close the housing 90 in a leaktight manner.
  • This screwed crown 100 comprises a sub-assembly 20, which comprises a crown body 1 which can be manipulated by a user.
  • This sub-assembly 20 is axially movable in the axial direction relative to the tube 5.
  • the sub-assembly 20 comprises at least one spring mechanism, with at least one spring 4 mounted in compression in a chamber 32 and extending along the line. axial direction D.
  • This spring 4 is, in particular but not limited to, a helical spring.
  • the sub-assembly 20 comprises, resting on at least one distal end of the spring 4 on a first side, a support washer 9.
  • This support washer 9 comprises a boss on a second side opposite the first side, and more particularly this boss is or comprises a spherical cap 99, which is centered on the axis of the crown D. And this spherical cap 99 is arranged to bear on a bearing surface 290 that comprises a component of the sub -set 20.
  • the crown body 1 directly comprises the bearing surface 290.
  • the component which comprises this bearing surface 290 is a cap 2, which is designed to be fixed to the crown body.
  • this cap 2 comprises a cap thread 21, which is arranged to cooperate in a complementary manner with a body thread 11, which the crown body 1 comprises.
  • the cap 2 surrounds the tube 5, and it comprises a groove or a housing 24, for receiving at least a first seal 25, which is arranged to bear on a bearing surface 57 that the tube comprises. 5.
  • the tube 5 also advantageously comprises a seal bearing surface 56, in particular inclined relative to the crown axis D, and which is arranged to compress at least axially the first seal 25 in a fully screwed position. of sub-assembly 20 on tube 5.
  • this cover 2 comprises a circlip groove 23, which is arranged to receive a cover circlip 26 for the axial stop of the first seal 25, in the axial direction D.
  • the sub-assembly 20 comprises, directly or indirectly secured to the crown body 1, a fixed barrel 3 which s 'extends in the axial direction D, and which comprises a first thread 31, which is arranged to cooperate with a first internal thread 51, which the tube 5 comprises, for the screwing of the sub-assembly 20 on the tube 5.
  • this sub-assembly 20 comprises a movable barrel 7, which comprises fixing means 71, which are arranged for fixing the screwed crown 100 to a control member housed in a box 200.
  • This movable barrel 7 is movable axially along the axial direction D against the spring 4 in the chamber 32, which is defined on the one hand by the fixed barrel 3 and on the other hand by the crown body 1 or by a cap 2 integral with the crown body 1
  • the mobile gun 7 is mounted prisoner in this chamber 32.
  • the sub-assembly 20 cannot be dismantled.
  • the cap 2 is fixed in a non-removable manner to the crown body 1, for example by bonding with a two-component resin, or the like.
  • the fixed barrel 3 is fixed in a non-removable manner to the cap 2, for example by laser welding, or the like.
  • the sub-assembly 20 comprises the crown body 1 surrounding the cap 2, which carries the fixed barrel 3 with which it defines the chamber 32 in which the support washer 9 is mounted captive, supported by its spherical cap 99 with the bearing surface 290, which comprises the cap 2, the spring 4, and the movable barrel 7.
  • the cap 2 comprises a journal 29 which guides a bore 39 which the fixed barrel 3 comprises. More particularly, this journal 29 comprises the bearing surface 290, which extends substantially perpendicularly to the crown axis D.
  • the tube 5 comprises at least one seal groove 54 for receiving at least one second seal 55, which is arranged to cooperate with a housing 90 of a box 100.
  • the tube 5 comprises an end machining 52, which is arranged to cooperate with axial stop means 53 for the axial stop of the screwed crown 100 when it is in the service position in a housing 90.
  • this end machining 52 is a circlip groove arranged to cooperate with a stop circlip constituting the axial stop means 53.
  • the end machining 52 is a thread, or respectively an internal thread, arranged to cooperate with an internal thread, or respectively a thread, which comprises a nut constituting the axial stop means 53.
  • the tube 5 comprises a shoulder 59, the projection of which on a plane perpendicular to the axis of the crown D is not of revolution, and which is arranged to cooperate with a shaped housing that comprises a middle 110.
  • the figure 2 shows such a shoulder 59 with four faces, arranged to cooperate with a square housing of the middle part.
  • the screwed crown 100 is a screwed crown which comprises a pattern on an end face of the crown body 1 or in its vicinity, and this pattern 19 is arranged to take, in the fully screwed position of the sub-assembly 20 on the tube 5, as many indexed positions as allows the cooperation of the shoulder 59 with a housing of complementary shape that comprises the middle part 110, here four positions in the embodiment illustrated by the figures.
  • the screwed crown 100 is a rotatable screwed crown.
  • the invention also relates to a watch case 200, comprising at least one such screwed crown 100, and comprising a middle part 110 with at least one housing 90 passing through for receiving such a screwed crown 100.
  • this box 200 comprises a shaped housing which is not of revolution, and comprising a screwed crown 100 with a shoulder 59, which is arranged to cooperate with this shaped housing, in at least one indexing position.
  • the invention also relates to a timepiece, in particular a watch 1000, comprising such a box 200.
  • the fixed barrel 3 is irreversibly fixed to the cap 2, which is fixed irreversibly to the crown body 1.
  • the screwed crown 100 is fitted, and the tube 5 is inserted axially in the axial direction D into the housing 90 of the middle 110, it is fixed to the middle 110 by screwing or driving it to a position of screwing or driving stop respectively.
  • the shoulder 59 is aligned if the tube 5 has any, with the housing of complementary shape of the middle part 110, in a desired indexing position.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
EP19202189.7A 2019-10-09 2019-10-09 Couronne vissée Pending EP3805869A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19202189.7A EP3805869A1 (fr) 2019-10-09 2019-10-09 Couronne vissée
CN202010869965.XA CN112631108B (zh) 2019-10-09 2020-08-26 旋拧表冠

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19202189.7A EP3805869A1 (fr) 2019-10-09 2019-10-09 Couronne vissée

Publications (1)

Publication Number Publication Date
EP3805869A1 true EP3805869A1 (fr) 2021-04-14

Family

ID=68242450

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19202189.7A Pending EP3805869A1 (fr) 2019-10-09 2019-10-09 Couronne vissée

Country Status (2)

Country Link
EP (1) EP3805869A1 (zh)
CN (1) CN112631108B (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4080294B1 (fr) * 2021-04-20 2023-10-25 Meco SA Mécanisme externe de commande pour pièce d horlogerie

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH242198A (fr) * 1944-06-28 1946-04-30 Rolex Montres Remontoir étanche.
EP1701225A1 (fr) * 2005-03-09 2006-09-13 Boninchi S.A. Couronne vissée pour pièce d'horlogerie
EP2592500A1 (fr) * 2011-11-09 2013-05-15 Rolex S.A. Boîte de montre comportant une couronne à mémoire d'orientation
FR2987684A1 (fr) * 2012-03-01 2013-09-06 Cheval Freres Ensemble de couronne de commande d'une lunette indicatrice tournante, dite "rehaut", et montre le comportant

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JP4619815B2 (ja) * 2005-02-21 2011-01-26 セイコーインスツル株式会社 携帯時計及びこの時計に用いる竜頭
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JP5082950B2 (ja) * 2008-03-13 2012-11-28 住友化学株式会社 揮発性芳香族化合物の分解方法
JP5279661B2 (ja) * 2009-08-28 2013-09-04 セイコーインスツル株式会社 携帯時計
EP2367075B1 (fr) * 2010-03-17 2017-07-26 Meco S.A. Couronne de remontage pour pièce d'horlogerie
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH242198A (fr) * 1944-06-28 1946-04-30 Rolex Montres Remontoir étanche.
EP1701225A1 (fr) * 2005-03-09 2006-09-13 Boninchi S.A. Couronne vissée pour pièce d'horlogerie
EP2592500A1 (fr) * 2011-11-09 2013-05-15 Rolex S.A. Boîte de montre comportant une couronne à mémoire d'orientation
FR2987684A1 (fr) * 2012-03-01 2013-09-06 Cheval Freres Ensemble de couronne de commande d'une lunette indicatrice tournante, dite "rehaut", et montre le comportant

Also Published As

Publication number Publication date
CN112631108A (zh) 2021-04-09
CN112631108B (zh) 2022-12-23

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