EP3828641B1 - Push-crown for a timepiece - Google Patents

Push-crown for a timepiece Download PDF

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Publication number
EP3828641B1
EP3828641B1 EP19212451.9A EP19212451A EP3828641B1 EP 3828641 B1 EP3828641 B1 EP 3828641B1 EP 19212451 A EP19212451 A EP 19212451A EP 3828641 B1 EP3828641 B1 EP 3828641B1
Authority
EP
European Patent Office
Prior art keywords
crown
pusher
cage
stem
recessed head
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
EP19212451.9A
Other languages
German (de)
French (fr)
Other versions
EP3828641A1 (en
Inventor
M. Hervé AVRIL
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 EP19212451.9A priority Critical patent/EP3828641B1/en
Priority to US17/029,181 priority patent/US11366428B2/en
Priority to JP2020161732A priority patent/JP7025500B2/en
Priority to CN202011356150.8A priority patent/CN112882371B/en
Publication of EP3828641A1 publication Critical patent/EP3828641A1/en
Application granted granted Critical
Publication of EP3828641B1 publication Critical patent/EP3828641B1/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
    • G04B3/04—Rigidly-mounted keys, knobs or crowns
    • G04B3/046—Operation by rotation and axial movement with extra function of axial shift of operating element, e.g. crown combined with push button
    • 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
    • G04B27/00—Mechanical devices for setting the time indicating means
    • G04B27/002—The setting apparatus being crown shaped
    • 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
    • G04B27/00—Mechanical devices for setting the time indicating means
    • G04B27/02—Mechanical devices for setting the time indicating means by making use of the winding means
    • 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
    • G04B29/00—Frameworks
    • G04B29/04—Connecting or supporting parts
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G21/00—Input or output devices integrated in time-pieces

Definitions

  • the present invention relates to the field of watchmaking and more specifically to an arrangement of a spring within a push-crown.
  • the push-piece crowns fitted to timepieces are fitted with a return spring which is positioned around the stem of the crown.
  • the spring generally bears at one end under the crown head and at its other end on a bearing surface of the crown tube or on a washer arranged on this same bearing surface.
  • the object of the present invention is to remedy the aforementioned drawbacks by proposing a timepiece comprising a spring arranged within the push-crown so as to eliminate the friction between the spring and the rotating components.
  • the present invention proposes a push-crown according to claim 1.
  • This arrangement of the spring within a cage makes it possible to avoid a scraping effect between the spring and the winding bottom of the crown and thereby to increase the life of the spring. Since the cage rotates with the spring when an action is performed on the push-crown, the spring is not subject to relative movement with a component. In addition, the cage having faces of a shape similar to that of the faces on which it bears, normal friction is present in the bearing zone, which makes it possible to guarantee continuous driving of the ring gear.
  • the present invention relates to a timepiece of the wristwatch type. It can be an electronic watch or a mechanical watch.
  • the timepiece conventionally comprises a case 1 fitted with a middle part 2 and a push-piece crown 3 comprising a recessed head 4 integral with a stem 7 moving in a tube 6 fixed to the middle part.
  • the tube 6 is crossed by the rod 7 connected to the hollow head 4.
  • the hollow head 4 is mounted so as to be able to move in translation and in rotation respectively along and around the axis 7a of the rod 7.
  • stem 7 is fixed at its base to a retaining element 8.
  • a magnet 9 for example a multipolar magnet, is fixed to the distal end of stem 7 intended to cooperate with one or more sensors (not shown).
  • the stem can actuate a function such as a chronograph function.
  • the push-button crown 3 further comprises a spring 10 arranged around the rod 7.
  • the return spring 10 is mounted in compression within a cage 11 visible in more detail at picture 3 .
  • the cage 11 is arranged between the tube 6 and the rod 7. It bears at one axial end on an inner face of the hollow head 4 and at its other axial end on a seat 6a of the tube 6 or, preferably, on a washer 14 promoting sliding, washer 14 being arranged on this same seat 6a.
  • the cage 11 is made in two separate upper 12 and lower 13 parts with the upper part 12 integral with the hollow head 4.
  • the upper part 12 is fixed to a core 5 extending partially around the rod 7 from the inner face of the recessed head 4.
  • the two upper 12 and lower 13 parts cooperate or, in other words, fit together.
  • the upper part 12 of the cage is integral in rotation with the hollow head 4, while the lower part 13 of the cage is axially free with respect to the hollow head but driven in rotation by the upper part of the cage during rotation hollowed out head.
  • the upper part 12 is mounted on the lower part 13 so as to be able to move in translation along the axis 7a of stem 7 when the push-crown is pushed in.
  • Different configurations are possible to ensure the rotational cooperation of the two parts and the translational movement of the upper part relative to the lower part.
  • the upper part 12 has at least one portion 12f nested in an opening 13b of the lower part 13.
  • the upper part may have at least one sliding portion within a slide provided on an inner wall of the lower part.
  • each part 12, 13 has a cylindrical shape with a side wall 12a, 13a provided with at least one opening 12b, 13b and preferably two openings, or even three, four, etc. openings.
  • the side wall 12a, 13a is delimited at one end by a base 12c, 13c pierced with a central hole and at the other end by a completely open base 12d, 13d.
  • the openings 12b, 13b cut in the side wall 12a, 13a define the contours of a U. In the example shown, the two openings are diametrically opposed.
  • the openings 12b, 13b are delimited by portions 12f, 13f of the side wall 12a, 13a.
  • the side wall 12a, 13a is thus formed of portions 12f, 13f framed by the openings 12b, 13b.
  • the two parts 12,13 are mounted in opposite directions with respect to each other, coaxially along the rod 7 and with an angular displacement of 90° with respect to each other.
  • the open bases 12d, 13d face each other and the portions 12f of the side wall 12a of the upper part 12 are nested in the openings 13b of the side wall 13a of the lower part 13 so as, on the one hand, to allow the movement in translation of the upper part relative to the lower part and, on the other hand, so that the upper part in rotation can drive the lower part in its movement.
  • the spring 10 is housed in the cage 11 between the two pierced bases of the central hole 12c, 13c in the space delimited by the side walls 12a, 13a and the rim 12e, 13e of the central holes. This arrangement allows in use to rotate the spring with the cage, which prevents its premature aging caused by a relative movement between the spring and a rotating component.

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

Description

OBJET DE L'INVENTIONOBJECT OF THE INVENTION

La présente invention se rapporte au domaine de l'horlogerie et plus précisément à un agencement d'un ressort au sein d'une couronne-poussoir.The present invention relates to the field of watchmaking and more specifically to an arrangement of a spring within a push-crown.

ARRIÈRE-PLAN TECHNOLOGIQUE ET ÉTAT DE LA TECHNIQUETECHNOLOGICAL BACKGROUND AND STATE OF THE ART

Les couronnes-poussoirs équipant les pièces d'horlogeries sont munies d'un ressort de rappel qui se positionne autour de la tige de la couronne. Le ressort prend généralement appui à une extrémité sous la tête de la couronne et à son autre extrémité sur une portée du tube de la couronne ou sur une rondelle disposée sur cette même portée. En utilisation, le mouvement relatif entre le ressort et les composants en rotation de la couronne-poussoir provoque un phénomène de grattage et par là-même une usure prématurée du ressort.The push-piece crowns fitted to timepieces are fitted with a return spring which is positioned around the stem of the crown. The spring generally bears at one end under the crown head and at its other end on a bearing surface of the crown tube or on a washer arranged on this same bearing surface. In use, the relative movement between the spring and the rotating components of the pusher-crown causes a scraping phenomenon and thereby premature wear of the spring.

Pour remédier à cet inconvénient, le document US 8371745 propose d'intercaler une rondelle favorisant le glissement à chaque extrémité du ressort. Bien que favorisant le glissement, le mouvement relatif entre la rondelle solidaire de la tête de couronne et le ressort induit toujours une friction qui ne permet pas un entraînement continu de la couronne.To remedy this drawback, the document US 8371745 proposes inserting a washer promoting sliding at each end of the spring. Although favoring sliding, the relative movement between the washer secured to the crown head and the spring still induces friction which does not allow continuous driving of the crown.

RÉSUMÉ DE L'INVENTIONSUMMARY OF THE INVENTION

La présente invention a pour but de remédier aux inconvénients précités en proposant une pièce d'horlogerie comportant un ressort agencé au sein de la couronne-poussoir de manière à supprimer le frottement entre le ressort et les composants en rotation.The object of the present invention is to remedy the aforementioned drawbacks by proposing a timepiece comprising a spring arranged within the push-crown so as to eliminate the friction between the spring and the rotating components.

A cet effet, la présente invention propose une couronne-poussoir conformément à la revendication 1.To this end, the present invention proposes a push-crown according to claim 1.

Cet agencement du ressort au sein d'une cage permet d'éviter un effet de grattage entre le ressort et le fond de revidage de la couronne et par là-même d'augmenter la durée de vie du ressort. La cage tournant avec le ressort lorsqu'une action est effectuée sur la couronne-poussoir, le ressort n'est pas soumis à un mouvement relatif avec un composant. En outre, la cage ayant des faces de forme similaire à celle des faces sur lesquelles elle est en appui, un frottement normal est présent dans la zone d'appui, ce qui permet de garantir un entraînement continu de la couronne.This arrangement of the spring within a cage makes it possible to avoid a scraping effect between the spring and the winding bottom of the crown and thereby to increase the life of the spring. Since the cage rotates with the spring when an action is performed on the push-crown, the spring is not subject to relative movement with a component. In addition, the cage having faces of a shape similar to that of the faces on which it bears, normal friction is present in the bearing zone, which makes it possible to guarantee continuous driving of the ring gear.

Les caractéristiques et avantages de la présente invention apparaîtront à la lecture de la description détaillée ci-dessous faisant référence aux figures suivantes.The characteristics and advantages of the present invention will appear on reading the detailed description below with reference to the following figures.

BRÈVE DESCRIPTION DES FIGURESBRIEF DESCRIPTION OF FIGURES

  • La figure 1 représente une vue en plan d'une pièce d'horlogerie munie d'une couronne-poussoir selon l'invention.The figure 1 shows a plan view of a timepiece provided with a push-crown according to the invention.
  • La figure 2 représente une vue en coupe longitudinale de la couronne-poussoir selon l'invention.The picture 2 shows a view in longitudinal section of the push-crown according to the invention.
  • La figure 3 représente une vue tridimensionnelle de la cage de ressort selon l'invention.The picture 3 shows a three-dimensional view of the spring cage according to the invention.
  • La figure 4a représente une vue en plan de la cage de ressort selon l'invention. Les figures 4b et 4c sont respectivement des vues en coupe selon les axes A-A et B-B de la figure 4a.The figure 4a shows a plan view of the spring cage according to the invention. The figures 4b and 4c are respectively sectional views along the axes AA and BB of the figure 4a .
  • La figure 5a est une vue en demi-coupe longitudinale de la couronne-poussoir selon l'invention en position montée finale dans la pièce d'horlogerie. La figure 5b représente une même vue de la couronne-poussoir en position appuyée.The figure 5a is a view in longitudinal half-section of the push-crown according to the invention in the final mounted position in the timepiece. The figure 5b shows the same view of the push-crown in the pressed position.
DESCRIPTION DÉTAILLÉE DE L'INVENTIONDETAILED DESCRIPTION OF THE INVENTION

La présente invention se rapporte à une pièce d'horlogerie du type montre-bracelet. Il peut s'agir d'une montre électronique ou d'une montre mécanique.The present invention relates to a timepiece of the wristwatch type. It can be an electronic watch or a mechanical watch.

Se référant aux figures 1 et 2, la pièce d'horlogerie comporte de manière conventionnelle un boîtier 1 muni d'une carrure 2 et d'une couronne-poussoir 3 comportant une tête évidée 4 solidaire d'une tige 7 se déplaçant dans un tube 6 fixé à la carrure. Le tube 6 est traversé par la tige 7 connectée à la tête évidée 4. La tête évidée 4 est montée mobile en translation et en rotation respectivement le long et autour de l'axe 7a de la tige 7. Selon la variante représentée à la figure 2 pour une montre électronique, la tige 7 est solidaire à sa base d'un élément de retenue 8. Un aimant 9, par exemple un aimant multipolaire est fixé à l'extrémité distale de la tige 7 destiné à coopérer avec un ou plusieurs capteurs (non représenté). Pour une montre mécanique, la tige peut actionner une fonction telle qu'une fonction de chronographe.Referring to figures 1 and 2 , the timepiece conventionally comprises a case 1 fitted with a middle part 2 and a push-piece crown 3 comprising a recessed head 4 integral with a stem 7 moving in a tube 6 fixed to the middle part. The tube 6 is crossed by the rod 7 connected to the hollow head 4. The hollow head 4 is mounted so as to be able to move in translation and in rotation respectively along and around the axis 7a of the rod 7. According to the variant shown in figure 2 for an electronic watch, stem 7 is fixed at its base to a retaining element 8. A magnet 9, for example a multipolar magnet, is fixed to the distal end of stem 7 intended to cooperate with one or more sensors ( not shown). For a mechanical watch, the stem can actuate a function such as a chronograph function.

La couronne-poussoir 3 comporte en outre un ressort 10 disposé autour de la tige 7. Selon l'invention, le ressort 10 de rappel est monté en compression au sein d'une cage 11 visible plus en détail à la figure 3. La cage 11 est disposée entre le tube 6 et la tige 7. Elle prend appui à une extrémité axiale sur une face intérieure de la tête évidée 4 et à son autre extrémité axiale sur une assise 6a du tube 6 ou, de préférence, sur une rondelle 14 favorisant le glissement, la rondelle 14 étant disposée sur cette même assise 6a. La cage 11 est réalisée en deux parties supérieure 12 et inférieure 13 distinctes avec la partie supérieure 12 solidaire de la tête évidée 4. A cet effet, la partie supérieure 12 est fixée à un noyau 5 s'étendant partiellement autour de la tige 7 depuis la face intérieure de la tête évidée 4. Les deux parties supérieure 12 et inférieure 13 coopèrent ou, en d'autres mots, s'imbriquent l'une dans l'autre. La partie supérieure 12 de la cage est solidaire en rotation de la tête évidée 4, tandis que la partie inférieure 13 de la cage est libre axialement par rapport à la tête évidée mais entrainée en rotation par la partie supérieure de la cage lors de la rotation de la tête évidée. En outre, la partie supérieure 12 est montée sur la partie inférieure 13 de manière à pouvoir se déplacer en translation le long de l'axe 7a de la tige 7 lorsque la couronne-poussoir est enfoncée. Différentes configurations sont envisageables pour assurer la coopération en rotation des deux parties et le mouvement en translation de la partie supérieure par rapport à la partie inférieure. Selon la variante des figures 3 et 4a-4c décrite plus en détail ci-dessous, la partie supérieure 12 présente au moins une portion 12f imbriquée dans une ouverture 13b de la partie inférieure 13. A titre d'exemple, selon une autre variante non représentée, la partie supérieure peut présenter au moins une portion coulissant au sein d'une glissière ménagée sur une paroi intérieure de la partie inférieure.The push-button crown 3 further comprises a spring 10 arranged around the rod 7. According to the invention, the return spring 10 is mounted in compression within a cage 11 visible in more detail at picture 3 . The cage 11 is arranged between the tube 6 and the rod 7. It bears at one axial end on an inner face of the hollow head 4 and at its other axial end on a seat 6a of the tube 6 or, preferably, on a washer 14 promoting sliding, washer 14 being arranged on this same seat 6a. The cage 11 is made in two separate upper 12 and lower 13 parts with the upper part 12 integral with the hollow head 4. For this purpose, the upper part 12 is fixed to a core 5 extending partially around the rod 7 from the inner face of the recessed head 4. The two upper 12 and lower 13 parts cooperate or, in other words, fit together. The upper part 12 of the cage is integral in rotation with the hollow head 4, while the lower part 13 of the cage is axially free with respect to the hollow head but driven in rotation by the upper part of the cage during rotation hollowed out head. In addition, the upper part 12 is mounted on the lower part 13 so as to be able to move in translation along the axis 7a of stem 7 when the push-crown is pushed in. Different configurations are possible to ensure the rotational cooperation of the two parts and the translational movement of the upper part relative to the lower part. According to the variant of figure 3 and 4a-4c described in more detail below, the upper part 12 has at least one portion 12f nested in an opening 13b of the lower part 13. By way of example, according to another variant not shown, the upper part may have at least one sliding portion within a slide provided on an inner wall of the lower part.

Se référant à la variante des figures 3 et 4a-4c, chaque partie 12,13 a une forme cylindrique avec une paroi latérale 12a,13a pourvue d'au moins une ouverture 12b,13b et de préférence de deux ouvertures, voire de trois, quatre, etc. ouvertures. La paroi latérale 12a,13a est délimitée à une extrémité par une base 12c,13c percée d'un trou central et à l'autre extrémité par une base 12d,13d complètement ouverte. Les ouvertures 12b,13b découpées dans la paroi latérale 12a,13a définissent les contours d'un U. Dans l'exemple illustré, les ouvertures au nombre de deux sont diamétralement opposées. Les ouvertures 12b,13b sont délimitées par des portions 12f,13f de la paroi latérale 12a,13a. La paroi latérale 12a,13a est ainsi formée de portions 12f,13f encadrées par les ouvertures 12b,13b. Selon l'invention, les deux parties 12,13 sont montées en sens inverse l'une par rapport à l'autre, coaxialement le long de la tige 7 et avec un déplacement angulaire de 90° l'une par rapport à l'autre. Ainsi, les bases ouvertes 12d,13d se font face et les portions 12f de la paroi latérale 12a de la partie supérieure 12 sont imbriquées dans les ouvertures 13b de la paroi latérale 13a de la partie inférieure 13 de manière, d'une part, à permettre le mouvement en translation de la partie supérieure par rapport à la partie inférieure et, d'autre part, de manière à ce que la partie supérieure en rotation puisse entraîner dans son mouvement la partie inférieure. En position déployée de la couronne-poussoir 3 telle que représentée aux figures 2, 3 et 5a, les portions 12f de la paroi latérale 12a de la partie supérieure 12 sont légèrement engagées dans les ouvertures 13b respectives de la partie inférieure 13. En position enfoncée de la couronne-poussoir 3 telle que représentée à la figure 5b, les portions 12f de la paroi latérale 12a s'engagent plus profondément dans les ouvertures 13b. La course maximale d représentée à la figure 5a est limitée par la face inférieure de la tête évidée 4 arrivant à buter contre les bords 6b du tube 6.Referring to the variant of figure 3 and 4a-4c , each part 12, 13 has a cylindrical shape with a side wall 12a, 13a provided with at least one opening 12b, 13b and preferably two openings, or even three, four, etc. openings. The side wall 12a, 13a is delimited at one end by a base 12c, 13c pierced with a central hole and at the other end by a completely open base 12d, 13d. The openings 12b, 13b cut in the side wall 12a, 13a define the contours of a U. In the example shown, the two openings are diametrically opposed. The openings 12b, 13b are delimited by portions 12f, 13f of the side wall 12a, 13a. The side wall 12a, 13a is thus formed of portions 12f, 13f framed by the openings 12b, 13b. According to the invention, the two parts 12,13 are mounted in opposite directions with respect to each other, coaxially along the rod 7 and with an angular displacement of 90° with respect to each other. . Thus, the open bases 12d, 13d face each other and the portions 12f of the side wall 12a of the upper part 12 are nested in the openings 13b of the side wall 13a of the lower part 13 so as, on the one hand, to allow the movement in translation of the upper part relative to the lower part and, on the other hand, so that the upper part in rotation can drive the lower part in its movement. In the extended position of the push-crown 3 as shown in figure 2 , 3 and 5a , the portions 12f of the side wall 12a of the upper part 12 are slightly engaged in the respective openings 13b of the lower part 13. In the depressed position of the push-button crown 3 as shown in figure 5b , the 12f portions of the side wall 12a engage more deeply in the openings 13b. The maximum stroke d shown in figure 5a is limited by the underside of the hollow head 4 coming to abut against the edges 6b of the tube 6.

Le ressort 10 est logé dans la cage 11 entre les deux bases percées du trou central 12c,13c dans l'espace délimité par les parois latérales 12a,13a et le rebord 12e,13e des trous centraux. Cet agencement permet en utilisation de faire tourner le ressort avec la cage, ce qui évite son vieillissement prématuré causé par un mouvement relatif entre le ressort et un composant en rotation.The spring 10 is housed in the cage 11 between the two pierced bases of the central hole 12c, 13c in the space delimited by the side walls 12a, 13a and the rim 12e, 13e of the central holes. This arrangement allows in use to rotate the spring with the cage, which prevents its premature aging caused by a relative movement between the spring and a rotating component.

LÉGENDELEGEND

  1. (1) Boîtier(1) Case
  2. (2) Carrure(2) Middle
  3. (3) Couronne-poussoir(3) Push-crown
  4. (4) Tête évidée(4) Hollow head
  5. (5) Noyau(5) Core
  6. (6) Tube
    1. a. Assise
    2. b. Bord
    (6) Tubing
    1. has. Seated
    2. b. Edge
  7. (7) Tige
    1. a. Axe
    (7) Stem
    1. has. Axis
  8. (8) Elément de retenue(8) Retainer
  9. (9) Aimant multipolaire(9) Multipolar magnet
  10. (10) Ressort de rappel(10) Return spring
  11. (11) Cage(11) Cage
  12. (12) Partie supérieure de la cage
    1. a. Paroi latérale
    2. b. Ouverture
    3. c. Base avec un trou central
    4. d. Base ouverte
    5. e. Rebord du trou central
    6. f. Portion de la paroi latérale
    (12) Upper part of the cage
    1. has. side wall
    2. b. Opening
    3. vs. Base with a central hole
    4. d. Open base
    5. e. Center hole rim
    6. f. Portion of the side wall
  13. (13) Partie inférieure de la cage
    1. a. Paroi latérale
    2. b. Ouverture
    3. c. Base avec un trou central
    4. d. Base ouverte
    5. e. Rebord du trou central
    6. f. Portion de la paroi latérale
    (13) Lower part of the cage
    1. has. side wall
    2. b. Opening
    3. vs. Base with a central hole
    4. d. Open base
    5. e. Center hole rim
    6. f. Portion of the side wall
  14. (14) Rondelle(14) Washer
  15. (15) Joint(15) Gasket
  16. (16) Coiffe(16) Headdress

Claims (13)

  1. Crown/pusher (3) comprising:
    - a tube (6) intended to be fixed to a watch case (1),
    - a recessed head (4) integral with a stem (7) extending into its recessed part, the stem (7) defining an axis (7a), said recessed head (4) being mounted to move in rotation and in translation respectively around and along the axis (7a) of the stem (7),
    - a return spring (10) disposed around the stem (7),
    the crown/pusher (3) being characterized in that it comprises a cage (11) housing the spring (10), said cage (11) being traversed by the stem (7) and comprising an upper part (12) integral with the recessed head (4) and a lower part (13) freely mounted with respect to the recessed head (4), said upper part (12) cooperating with the lower part (13) in order to drive the lower part (13) in its rotational movement and in order to move in translation along the axis (7a) with respect to said lower part (13), said spring being compressed inside the cage (11) in order to be driven in rotation with said cage (11).
  2. Crown/pusher (3) according to claim 1, characterized in that the upper part (12) and the lower part (13) have the same cylindrical shape with a side wall (12a, 13a) provided with at least one opening (12b, 13b), the side wall (12a, 13a) being delimited at one end by a base (12c, 13c) pierced with a central hole (12c, 13c) and at the other end by a completely open base (12d, 13d), the upper part (12) and the lower part (13) being mounted in opposite directions with respect to each other and coaxially around the stem (7) with one portion (12f) of the side wall (12a) of the upper part (12) being interlocked in an opening (13b) of the side wall (13a) of the lower part (13).
  3. Crown/pusher (3) according to claim 2, characterized in that the opening (12b, 13b) defines the contours of a U.
  4. Crown/pusher (3) according to claim 2 or 3, characterized in that there is an opening (12b) in the upper part (12) and a second opening (13b) in the lower part (13), the openings (12b, 13b) of each part (12, 13) being diametrically opposite with respect to the axis (7a) of the stem (7).
  5. Crown/pusher (3) according to any of the preceding claims, characterized in that the cage (11) is attached in its upper part (12) to a core (5) extending from the inner face of the recessed head (4) and arranged around the stem (7).
  6. Crown/pusher (3) according to any of the preceding claims, characterized in that the cage (11) rests at one axial end on an inner face of the recessed head (4) and at its other axial end on a base (6a) of the tube (6).
  7. Crown/pusher (3) according to the preceding claim, characterized in that inner face of the recessed head (4) and the base (6a) respectively have a complementary shape to that of the pierced base of the central hole (12c, 13c) of the upper part (12) and of the lower part (13) in the bearing area.
  8. Crown/pusher (3) according to claim 6, characterized in that it includes a washer (14) facilitating sliding, said washer (14) being arranged on the base (6a) of the tube (6).
  9. Crown/pusher (3) according to the preceding claim and claim 2, characterized in that inner face of the recessed head (4) and the washer (14) respectively have a complementary shape to that of the pierced base of the central hole (12c, 13c) of the upper part (12) and of the lower part (13) in the bearing area.
  10. Crown/pusher (3) according to any of claims 2 to 9, characterized in that the spring (10) is housed in the cage (11) between the two bases pierced with the central hole (12c, 13c) in the space delimited by the side walls (12a, 13a) and a rim (12e, 13e) of the central holes.
  11. Crown/pusher (3) according to any of claims 2 to 9, when claims 3 to 9 depends also on claim 2, characterized in that the portion (12f) of the side wall (12a) of the upper part (12) is partially engaged in the opening (13b) of the lower part (13) when the recessed head (4) is in the position thereof axially furthermost from the tube (6), the portion (12f) of the side wall (12a) of the upper part (12) being more deeply engaged in the opening (13b) of the lower part (13) when the recessed head (4) is in the position thereof axially closest to the tube (6).
  12. Timepiece comprising the crown/pusher (3) according to any of the preceding claims.
  13. Timepiece according to the preceding claim, characterized in that the timepiece is an electronic or mechanical watch.
EP19212451.9A 2019-11-29 2019-11-29 Push-crown for a timepiece Active EP3828641B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP19212451.9A EP3828641B1 (en) 2019-11-29 2019-11-29 Push-crown for a timepiece
US17/029,181 US11366428B2 (en) 2019-11-29 2020-09-23 Crown/pusher for timepieces
JP2020161732A JP7025500B2 (en) 2019-11-29 2020-09-28 Crown / pusher for timekeeper
CN202011356150.8A CN112882371B (en) 2019-11-29 2020-11-27 Crown and timepiece comprising such a crown

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19212451.9A EP3828641B1 (en) 2019-11-29 2019-11-29 Push-crown for a timepiece

Publications (2)

Publication Number Publication Date
EP3828641A1 EP3828641A1 (en) 2021-06-02
EP3828641B1 true EP3828641B1 (en) 2022-07-20

Family

ID=68732868

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19212451.9A Active EP3828641B1 (en) 2019-11-29 2019-11-29 Push-crown for a timepiece

Country Status (4)

Country Link
US (1) US11366428B2 (en)
EP (1) EP3828641B1 (en)
JP (1) JP7025500B2 (en)
CN (1) CN112882371B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4006647B1 (en) * 2020-11-25 2023-05-10 Meco S.A. Push-crown for a timepiece

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Also Published As

Publication number Publication date
US11366428B2 (en) 2022-06-21
US20210165368A1 (en) 2021-06-03
JP2021085875A (en) 2021-06-03
CN112882371A (en) 2021-06-01
CN112882371B (en) 2022-05-03
EP3828641A1 (en) 2021-06-02
JP7025500B2 (en) 2022-02-24

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