EP3800514B1 - Spring ring of a snap fitting of a rotating bezel - Google Patents

Spring ring of a snap fitting of a rotating bezel Download PDF

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Publication number
EP3800514B1
EP3800514B1 EP19201389.4A EP19201389A EP3800514B1 EP 3800514 B1 EP3800514 B1 EP 3800514B1 EP 19201389 A EP19201389 A EP 19201389A EP 3800514 B1 EP3800514 B1 EP 3800514B1
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EP
European Patent Office
Prior art keywords
spring ring
rotating bezel
watch case
plane
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
EP19201389.4A
Other languages
German (de)
French (fr)
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EP3800514A1 (en
Inventor
Emmanuel Jacquot
Laurent BOURCET
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.)
Comadur SA
Original Assignee
Comadur 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 Comadur SA filed Critical Comadur SA
Priority to EP19201389.4A priority Critical patent/EP3800514B1/en
Priority to JP2020152557A priority patent/JP7206240B2/en
Priority to US17/022,373 priority patent/US11789408B2/en
Priority to KR1020200125097A priority patent/KR102515197B1/en
Priority to CN202011048269.9A priority patent/CN112612197B/en
Publication of EP3800514A1 publication Critical patent/EP3800514A1/en
Application granted granted Critical
Publication of EP3800514B1 publication Critical patent/EP3800514B1/en
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Anticipated expiration legal-status Critical

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    • 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
    • G04B19/28—Adjustable guide marks or pointers for indicating determined points of time
    • 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
    • G04B19/28—Adjustable guide marks or pointers for indicating determined points of time
    • G04B19/283—Adjustable guide marks or pointers for indicating determined points of time on rotatable rings, i.e. bezel
    • 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
    • G04B37/0008—Cases for pocket watches and wrist watches

Definitions

  • the invention relates to a spring ring for locking a rotating bezel.
  • the invention also relates to a rotating bezel system comprising the spring ring.
  • the invention also relates to a watch case comprising a ceramic middle and the rotating bezel system rotatably mounted on the middle.
  • the invention further relates to a watch comprising the watch case.
  • Known rotating bezel systems are provided with a spring ring intended to cooperate with the rotating bezel to allow the latter to snap into place. Such clipping then allows precise rotation of the rotating bezel on the middle of a watch case for example.
  • the middle part is made of ceramic
  • the latter generally has a cylindrical outer periphery provided with an annular groove intended to receive the spring ring.
  • rays caused by the machining of the caseband are present in the bottom of the groove. These rays, which are for example visible on the figure 2 , are inevitable because they are generated by grinding wheels used to machine the throat.
  • the object of the invention is therefore to provide a spring ring for snapping into place a rotating bezel making it possible to guarantee good positioning of the spring ring in the bottom of the groove of a ceramic watch case middle, and to thus reducing the mechanical wear of the parts and therefore increasing the reliability and durability of the whole.
  • the invention relates to a spring ring for locking a rotating bezel which comprises the characteristics mentioned in independent claim 1.
  • the spring ring according to the invention also has the advantage of being easy to manufacture and install within a watch case middle, of being interchangeable with different currently existing parts, of being easily replaceable in after-sales service, as well as improving the sensitive quality of the product as well as the user experience, particularly with regard to the sensation of precision of rotation of the rotating bezel.
  • the spring ring comprises three inclined legs distributed around its inner periphery over 360°, the three inclined legs being spaced two by two at 120°. This makes it possible to recenter the spring ring in relation to the middle of the watch case, independently of the rays present at the bottom of the groove, and thus to further improve the correct positioning of the spring ring in the groove. The mechanical wear of the parts is reduced accordingly.
  • the spring ring further comprises at least one notching tab intended to cooperate with a rotating bezel for snapping said bezel onto the spring ring.
  • the invention also relates to a rotating bezel system comprising the spring ring described above, and which comprises the characteristics mentioned in dependent claim 7.
  • the rotating bezel is typically an annular rotating bezel, preferably a bezel unidirectional.
  • the invention also relates to a watch case comprising a ceramic middle and the rotating bezel system described above, and which comprises the characteristics mentioned in dependent claim 8.
  • the invention also relates to a watch comprising the watch case described above, and which comprises the characteristics mentioned in dependent claim 9.
  • the watch case 2 typically comprises a ceramic middle 4.
  • the watch case 2 also includes a rotating bezel system 6 as well as a watch movement, the watch movement n 'not being shown in the figures for reasons of clarity.
  • the rotating bezel system 6 is rotatably mounted on the middle part 4.
  • the rotating bezel system 6 is formed of an independent module.
  • the middle part 4 is annular in shape.
  • the middle part 4 comprises a cylindrical exterior surface 8 which delimits a part 10 of the middle part 4 called the chimney.
  • the middle part 4 is further provided, on its cylindrical outer periphery, with an annular groove 12.
  • the annular groove 12 is intended to receive the spring ring 14 according to the invention, as will be described subsequently.
  • the rotating bezel system 6 comprises a rotating bezel and a spring ring 14 for locking the rotating bezel.
  • the rotating bezel which is typically an annular rotating bezel, of preferably a unidirectional bezel, is not visible in the figures for reasons of clarity.
  • the rotating bezel is held by a spring with sides which moves apart when the bezel passes over the chimney of the middle part to then be inserted into the middle groove, and cooperates with the spring ring 14 by snap-fastening.
  • the spring ring 14 is received in the annular groove 12 and extends in a plane P1 illustrated on the figure 2 , which plane P1 is substantially horizontal when the spring ring 14 is placed in the groove 12.
  • the spring ring 14 comprises on its inner periphery at least one tab 16 inclined relative to the plane P1.
  • the spring ring 14 comprises three inclined tabs 16 distributed around its inner periphery over 360° and spaced two by two at 120°.
  • the spring ring 14 further comprises at least one notching tab 18 intended to cooperate with the rotating bezel for snapping the bezel onto the spring ring 14.
  • the spring ring 14 comprises three notching tabs 18 distributed over 360° and spaced two by two at 120°.
  • the spring ring 14 is formed from a single piece of material.
  • the spring ring 14 is for example made of a material such as Phynox.
  • each inclined tab 16 cooperates with the cylindrical exterior surface 8 of the middle part 4, so as to index the position of the spring ring 14 relative to the middle part 4.
  • the spring ring 14 is always well positioned at flat in the annular groove 12.
  • the spring ring 14 never comes into contact with the spoke 19 present at the bottom of the groove 12, which makes it possible to avoid problems of wear and torque variation.
  • this radius 19 has a width substantially equal to 0.2 mm.
  • each tab 16 extends towards the center 20 of the spring ring 14, and is inclined upwards relative to plane P1.
  • each tab 16 is inclined relative to the plane P1 at an angle substantially equal to 25°.
  • each notching tab 18 is configured to cooperate either with the rotating bezel itself, or with a part attached to the bezel, so as to snap the bezel onto the spring ring 14.
  • each notching tongue 18 comprises for example a first portion 18a and a second portion 18b both extending upwards relative to the plane P1.
  • the first portion 18a has for example an arcuate shape whose curvature tends to move it away from the plane P1, the center of the osculating circle taken at any point of the first portion 18a being located opposite the plane P1 with respect to the tongue 18.
  • the second portion 18b is for example a planar portion, inclined relative to the plane P1.
  • each notching tab 18 is formed via a preliminary cutout made in the thickness of the spring ring 14. The shape of the cutout is thus complementary to the shape of the corresponding tab 18.

Description

DOMAINE TECHNIQUE DE L'INVENTIONTECHNICAL FIELD OF THE INVENTION

L'invention concerne un anneau ressort d'encliquetage d'une lunette tournante.The invention relates to a spring ring for locking a rotating bezel.

L'invention concerne également un système de lunette tournante comprenant l'anneau ressort.The invention also relates to a rotating bezel system comprising the spring ring.

L'invention concerne également une boîte de montre comprenant une carrure en céramique et le système de lunette tournante monté à rotation sur la carrure.The invention also relates to a watch case comprising a ceramic middle and the rotating bezel system rotatably mounted on the middle.

L'invention concerne en outre une montre comportant la boîte de montre.The invention further relates to a watch comprising the watch case.

ETAT DE LA TECHNIQUESTATE OF THE ART

Des systèmes de lunettes tournantes connus sont munis d'un anneau ressort destiné à coopérer avec la lunette tournante pour permettre l'encliquetage de cette dernière. Un tel encliquetage permet ensuite une rotation précise de la lunette tournante sur une carrure de boîte de montre par exemple. Lorsque la carrure est en céramique, cette dernière présente généralement un pourtour extérieur cylindrique muni d'une gorge annulaire destinée à recevoir l'anneau ressort. Toutefois, dans ce cas, des rayons provoqués par l'usinage de la carrure sont présents dans le fond de gorge. Ces rayons, qui sont par exemples visibles sur la figure 2, sont inévitables car ils sont générés par des meules utilisées pour usiner la gorge. Or, un problème qui se pose dans de tels systèmes avec carrure en céramique est que, lorsque l'anneau ressort entre en contact avec le ou les rayon(s) présent(s) en fond de gorge, l'anneau ressort est susceptible de ne plus être positionné à plat dans la gorge. Ceci provoque des problèmes de variation de couple, du jeu voire de la fatigue mécanique entre les pièces, et donc une usure prématurée du système de lunette tournante. JPH0592779U et DE3205821 sont considérés comme des documents pertinents.Known rotating bezel systems are provided with a spring ring intended to cooperate with the rotating bezel to allow the latter to snap into place. Such clipping then allows precise rotation of the rotating bezel on the middle of a watch case for example. When the middle part is made of ceramic, the latter generally has a cylindrical outer periphery provided with an annular groove intended to receive the spring ring. However, in this case, rays caused by the machining of the caseband are present in the bottom of the groove. These rays, which are for example visible on the figure 2 , are inevitable because they are generated by grinding wheels used to machine the throat. However, a problem which arises in such systems with a ceramic middle is that, when the spring ring comes into contact with the spoke(s) present at the bottom of the groove, the spring ring is likely to no longer be positioned flat in the throat. This causes problems with torque variation, play or even mechanical fatigue between parts, and therefore premature wear of the rotating bezel system. JPH0592779U And DE3205821 are considered relevant documents.

RESUME DE L'INVENTIONSUMMARY OF THE INVENTION

L'invention a donc pour but de fournir un anneau ressort d'encliquetage d'une lunette tournante permettant de garantir un bon positionnement de l'anneau ressort dans le fond de gorge d'une carrure de boite de montre en céramique, et d'ainsi réduire l'usure mécanique des pièces et donc d'augmenter la fiabilité et la durabilité de l'ensemble.The object of the invention is therefore to provide a spring ring for snapping into place a rotating bezel making it possible to guarantee good positioning of the spring ring in the bottom of the groove of a ceramic watch case middle, and to thus reducing the mechanical wear of the parts and therefore increasing the reliability and durability of the whole.

A cet effet, l'invention concerne un anneau ressort d'encliquetage d'une lunette tournante qui comprend les caractéristiques mentionnées dans la revendication indépendante 1.To this end, the invention relates to a spring ring for locking a rotating bezel which comprises the characteristics mentioned in independent claim 1.

Des formes particulières de l'anneau ressort sont définies dans les revendications dépendantes 2 à 6.Particular shapes of the spring ring are defined in dependent claims 2 to 6.

La présence d'au moins une patte inclinée sur le pourtour intérieur de l'anneau ressort, laquelle patte est destinée à coopérer avec une surface extérieure cylindrique de la carrure de boîte de montre, permet d'éviter que l'anneau ressort soit en contact avec le ou les rayon(s) présent(s) en fond de gorge. Ceci permet d'indexer la position de l'anneau ressort par rapport à la carrure, et de garantir ainsi un positionnement à plat de l'anneau ressort dans la gorge prévue sur la carrure. La variation du couple de rotation de la lunette ainsi que l'usure mécanique des différentes pièces sont par conséquence réduites par rapport aux systèmes de l'art antérieur. La fiabilité et la durabilité de l'ensemble comprenant l'anneau ressort sont ainsi avantageusement améliorées.The presence of at least one inclined tab on the inner periphery of the spring ring, which tab is intended to cooperate with a cylindrical outer surface of the watch case middle, prevents the spring ring from being in contact with the spoke(s) present at the bottom of the groove. This makes it possible to index the position of the spring ring in relation to the middle part, and thus to guarantee flat positioning of the spring ring in the groove provided on the middle part. The variation in the rotational torque of the bezel as well as the mechanical wear of the different parts are consequently reduced compared to the systems of the prior art. The reliability and durability of the assembly comprising the spring ring are thus advantageously improved.

En outre, l'anneau ressort selon l'invention présente également l'avantage d'être facile à fabriquer et à installer au sein d'une carrure de boîte de montre, d'être interchangeable avec différentes pièces existantes actuellement, d'être facilement remplaçable en service après-vente, ainsi que d'améliorer la qualité sensitive du produit ainsi que le ressenti utilisateur, notamment en ce qui concerne la sensation de précision de rotation de la lunette tournante.In addition, the spring ring according to the invention also has the advantage of being easy to manufacture and install within a watch case middle, of being interchangeable with different currently existing parts, of being easily replaceable in after-sales service, as well as improving the sensitive quality of the product as well as the user experience, particularly with regard to the sensation of precision of rotation of the rotating bezel.

Avantageusement, l'anneau ressort comprend trois pattes inclinées réparties sur son pourtour intérieur sur 360°, les trois pattes inclinées étant espacées deux à deux de 120°. Ceci permet de recentrer l'anneau ressort par rapport à la carrure de boîte de montre, indépendamment des rayons présents au fond de la gorge, et d'ainsi améliorer encore le bon positionnement de l'anneau ressort dans la gorge. L'usure mécanique des pièces en est d'autant réduite.Advantageously, the spring ring comprises three inclined legs distributed around its inner periphery over 360°, the three inclined legs being spaced two by two at 120°. This makes it possible to recenter the spring ring in relation to the middle of the watch case, independently of the rays present at the bottom of the groove, and thus to further improve the correct positioning of the spring ring in the groove. The mechanical wear of the parts is reduced accordingly.

Selon une caractéristique technique particulière de l'invention, l'anneau ressort comprend en outre au moins une languette de crantage destinée à coopérer avec une lunette tournante pour l'encliquetage de ladite lunette sur l'anneau ressort.According to a particular technical characteristic of the invention, the spring ring further comprises at least one notching tab intended to cooperate with a rotating bezel for snapping said bezel onto the spring ring.

A cet effet, l'invention concerne également un système de lunette tournante comprenant l'anneau ressort décrit ci-dessus, et qui comprend les caractéristiques mentionnées dans la revendication dépendante 7. La lunette tournante est typiquement une lunette tournante annulaire, de préférence une lunette unidirectionnelle.For this purpose, the invention also relates to a rotating bezel system comprising the spring ring described above, and which comprises the characteristics mentioned in dependent claim 7. The rotating bezel is typically an annular rotating bezel, preferably a bezel unidirectional.

A cet effet, l'invention concerne également une boîte de montre comprenant une carrure en céramique et le système de lunette tournante décrit ci-dessus, et qui comprend les caractéristiques mentionnées dans la revendication dépendante 8.To this end, the invention also relates to a watch case comprising a ceramic middle and the rotating bezel system described above, and which comprises the characteristics mentioned in dependent claim 8.

A cet effet, l'invention concerne également une montre comportant la boîte de montre décrite ci-dessus, et qui comprend les caractéristiques mentionnées dans la revendication dépendante 9.To this end, the invention also relates to a watch comprising the watch case described above, and which comprises the characteristics mentioned in dependent claim 9.

BRÈVE DESCRIPTION DES FIGURESBRIEF DESCRIPTION OF THE FIGURES

Les buts, avantages et caractéristiques de l'anneau ressort d'encliquetage d'une lunette tournante selon l'invention apparaîtront mieux dans la description suivante sur la base d'au moins une forme d'exécution non limitative illustrée par les dessins sur lesquels :

  • la figure 1 est une vue en perspective d'une boîte de montre équipée d'un système de lunette tournante comprenant un anneau ressort selon un mode de réalisation de l'invention ;
  • la figure 2 est une vue en coupe de la boîte de montre de la figure 1, prise selon un plan de coupe II-II ;
  • la figure 3 est une vue de dessus de l'anneau ressort de la figure 1 ;
  • la figure 4 est une vue en coupe de l'anneau ressort de la figure 3, prise selon un plan de coupe IV-IV ; et
  • la figure 5 est une vue en coupe de l'anneau ressort de la figure 3, prise selon un plan de coupe V-V.
The aims, advantages and characteristics of the spring ring for locking a rotating bezel according to the invention will appear better in the following description on the basis of at least one non-limiting embodiment illustrated by the drawings in which:
  • there figure 1 is a perspective view of a watch case equipped with a rotating bezel system comprising a spring ring according to one embodiment of the invention;
  • there figure 2 is a cutaway view of the watch case of the figure 1 , taken according to a section plane II-II;
  • there Figure 3 is a top view of the spring ring of the figure 1 ;
  • there Figure 4 is a sectional view of the spring ring of the Figure 3 , taken according to a section plane IV-IV; And
  • there Figure 5 is a sectional view of the spring ring of the Figure 3 , taken according to a VV cutting plane.

DESCRIPTION DETAILLEE DE L'INVENTIONDETAILED DESCRIPTION OF THE INVENTION

La figure 1 représente une montre 1 munie d'une boîte de montre 2. La boîte de montre 2 comprend typiquement une carrure en céramique 4. La boîte de montre 2 comprend également un système de lunette tournante 6 ainsi qu'un mouvement horloger, le mouvement horloger n'étant pas représenté sur les figures pour des raisons de clarté. Le système de lunette tournante 6 est monté à rotation sur la carrure 4. De préférence, le système de lunette tournante 6 est formé d'un module indépendant.There figure 1 represents a watch 1 provided with a watch case 2. The watch case 2 typically comprises a ceramic middle 4. The watch case 2 also includes a rotating bezel system 6 as well as a watch movement, the watch movement n 'not being shown in the figures for reasons of clarity. The rotating bezel system 6 is rotatably mounted on the middle part 4. Preferably, the rotating bezel system 6 is formed of an independent module.

Comme illustré sur la figure 1, la carrure 4 est de forme annulaire. La carrure 4 comprend une surface extérieure cylindrique 8 qui délimite une partie 10 de la carrure 4 appelée cheminée. La carrure 4 est munie en outre, sur son pourtour extérieur cylindrique, d'une gorge annulaire 12. Comme illustré sur les figures 1 et 2, la gorge annulaire 12 est destinée à recevoir l'anneau ressort 14 selon l'invention, comme cela sera décrit par la suite.As illustrated on the figure 1 , the middle part 4 is annular in shape. The middle part 4 comprises a cylindrical exterior surface 8 which delimits a part 10 of the middle part 4 called the chimney. The middle part 4 is further provided, on its cylindrical outer periphery, with an annular groove 12. As illustrated in the figures 1 and 2 , the annular groove 12 is intended to receive the spring ring 14 according to the invention, as will be described subsequently.

Le système de lunette tournante 6 comprend une lunette tournante et un anneau ressort 14 d'encliquetage de la lunette tournante. La lunette tournante, qui est typiquement une lunette tournante annulaire, de préférence une lunette unidirectionnelle, n'est pas visible sur les figures pour des raisons de clarté. La lunette tournante est maintenue par un ressort à pans qui s'écarte lors du passage de la lunette sur la cheminée de la carrure pour ensuite s'insérer dans la gorge de carrure, et coopère avec l'anneau ressort 14 par encliquetage. L'anneau ressort 14 est reçu dans la gorge annulaire 12 et s'étend dans un plan P1 illustré sur la figure 2, lequel plan P1 est sensiblement horizontal lorsque l'anneau ressort 14 est disposé dans la gorge 12.The rotating bezel system 6 comprises a rotating bezel and a spring ring 14 for locking the rotating bezel. The rotating bezel, which is typically an annular rotating bezel, of preferably a unidirectional bezel, is not visible in the figures for reasons of clarity. The rotating bezel is held by a spring with sides which moves apart when the bezel passes over the chimney of the middle part to then be inserted into the middle groove, and cooperates with the spring ring 14 by snap-fastening. The spring ring 14 is received in the annular groove 12 and extends in a plane P1 illustrated on the figure 2 , which plane P1 is substantially horizontal when the spring ring 14 is placed in the groove 12.

L'anneau ressort 14 comprend sur son pourtour intérieur au moins une patte 16 inclinée par rapport au plan P1. Dans l'exemple de réalisation illustré sur les figures 1 à 3, l'anneau ressort 14 comprend trois pattes inclinées 16 réparties sur son pourtour intérieur sur 360° et espacées deux à deux de 120°. De préférence, l'anneau ressort 14 comprend en outre au moins une languette de crantage 18 destinée à coopérer avec la lunette tournante pour l'encliquetage de la lunette sur l'anneau ressort 14. Dans l'exemple de réalisation illustré sur les figures 1 à 3, l'anneau ressort 14 comprend trois languettes de crantage 18 réparties sur 360° et espacées deux à deux de 120°. L'anneau ressort 14 est formé d'une seule pièce de matière. L'anneau ressort 14 est par exemple constitué d'un matériau tel que le Phynox.The spring ring 14 comprises on its inner periphery at least one tab 16 inclined relative to the plane P1. In the exemplary embodiment illustrated on the figures 1 to 3 , the spring ring 14 comprises three inclined tabs 16 distributed around its inner periphery over 360° and spaced two by two at 120°. Preferably, the spring ring 14 further comprises at least one notching tab 18 intended to cooperate with the rotating bezel for snapping the bezel onto the spring ring 14. In the example of embodiment illustrated on the figures 1 to 3 , the spring ring 14 comprises three notching tabs 18 distributed over 360° and spaced two by two at 120°. The spring ring 14 is formed from a single piece of material. The spring ring 14 is for example made of a material such as Phynox.

Comme visible sur la figure 1, chaque patte inclinée 16 coopère avec la surface extérieure cylindrique 8 de la carrure 4, de sorte à indexer la position de l'anneau ressort 14 par rapport à la carrure 4. De cette manière, l'anneau ressort 14 est toujours bien positionné à plat dans la gorge annulaire 12. En particulier, comme illustré sur la figure 2, l'anneau ressort 14 n'entre jamais en contact avec le rayon 19 présent au fond de la gorge 12, ce qui permet d'éviter les problèmes d'usure et de variation de couple. Dans l'exemple de réalisation particulier des figures 1 et 2, ce rayon 19 présente une largeur sensiblement égale à 0,2 mm.As visible on the figure 1 , each inclined tab 16 cooperates with the cylindrical exterior surface 8 of the middle part 4, so as to index the position of the spring ring 14 relative to the middle part 4. In this way, the spring ring 14 is always well positioned at flat in the annular groove 12. In particular, as illustrated in the figure 2 , the spring ring 14 never comes into contact with the spoke 19 present at the bottom of the groove 12, which makes it possible to avoid problems of wear and torque variation. In the particular embodiment of the figures 1 and 2 , this radius 19 has a width substantially equal to 0.2 mm.

De préférence, comme illustré sur les figures 1, 3 et 4, chaque patte 16 s'étend en direction du centre 20 de l'anneau ressort 14, et est inclinée vers le haut par rapport au plan P1. Dans l'exemple de réalisation particulier des figures 1 et 4, chaque patte 16 est inclinée par rapport au plan P1 d'un angle sensiblement égal à 25°.Preferably, as illustrated in the figures 1 , 3 and 4 , each tab 16 extends towards the center 20 of the spring ring 14, and is inclined upwards relative to plane P1. In the particular embodiment of the figures 1 And 4 , each tab 16 is inclined relative to the plane P1 at an angle substantially equal to 25°.

Chaque languette de crantage 18 est configurée pour coopérer soit avec la lunette tournante elle-même, soit avec une pièce rapportée sur la lunette, de sorte à encliqueter la lunette sur l'anneau ressort 14. Pour ce faire, comme illustré sur la figure 5, chaque languette de crantage 18 comprend par exemple une première portion 18a et une seconde portion 18b s'étendant toutes deux vers le haut par rapport au plan P1. La première portion 18a présente par exemple une forme arquée dont la courbure tend à l'éloigner du plan P1, le centre du cercle osculateur pris en tout point de la première portion 18a étant situé à l'opposé du plan P1 par rapport à la languette 18. La seconde portion 18b est par exemple une portion plane, inclinée par rapport au plan P1. Dans l'exemple de réalisation particulier de la figure 5, la seconde portion 18b de chaque languette de crantage 18 est inclinée par rapport au plan P1 d'un angle sensiblement égal à 15°. De préférence, comme illustré sur la figure 1, chaque languette de crantage 18 est formée via une découpe préalable pratiquée dans l'épaisseur de l'anneau ressort 14. La forme de la découpe est ainsi complémentaire de la forme de la languette 18 correspondante.Each notching tab 18 is configured to cooperate either with the rotating bezel itself, or with a part attached to the bezel, so as to snap the bezel onto the spring ring 14. To do this, as illustrated in the Figure 5 , each notching tongue 18 comprises for example a first portion 18a and a second portion 18b both extending upwards relative to the plane P1. The first portion 18a has for example an arcuate shape whose curvature tends to move it away from the plane P1, the center of the osculating circle taken at any point of the first portion 18a being located opposite the plane P1 with respect to the tongue 18. The second portion 18b is for example a planar portion, inclined relative to the plane P1. In the particular embodiment of the Figure 5 , the second portion 18b of each notching tongue 18 is inclined relative to the plane P1 by an angle substantially equal to 15°. Preferably, as shown in the figure 1 , each notching tab 18 is formed via a preliminary cutout made in the thickness of the spring ring 14. The shape of the cutout is thus complementary to the shape of the corresponding tab 18.

Claims (9)

  1. Spring ring (14) for snap fitting a rotating bezel for a watch case (2) middle part (4) made of ceramic, the spring ring (14) extending in a plane (P1) and being intended to be received in an annular groove (12) arranged on a cylindrical outer rim of said middle part (4);
    characterised in that the spring ring (14) comprises on the inner rim thereof at least one lug (16) inclined in relation to the plane (P1) of the spring ring (14), said lug (16) being intended to engage with a cylindrical outer surface (8) of the watch case (2) middle part (4), so as to index the position of the spring ring (14) in relation to the middle part (4).
  2. Spring ring (14) according to claim 1, characterised in that the or each lug (16) is inclined in relation to the plane (P1) wherein extends the spring ring (14) at an angle equal to 25°.
  3. Spring ring (14) according to claim 1 or 2, characterised in that the spring ring (14) comprises three inclined lugs (16) distributed on the inner rim thereof over 360°, the three inclined lugs (16) being spaced apart two by two by 120°.
  4. Spring ring (14) according to any one of the preceding claims, characterised in that the or each lug (16) extends towards the centre (20) of the spring ring (14), and is inclined upwardly in relation to the plane (P1) wherein extends the ring (14).
  5. Spring ring (14) according to any one of the preceding claims, characterised in that the spring ring (14) further comprises at least one notching tab (18) intended to engage with a rotating bezel for snap fitting said bezel on the spring ring (14).
  6. Spring ring (14) according to claim 5, characterised in that the spring ring (14) comprises three notching tabs (18) distributed on the ring (14) over 360°, the three tabs (18) being spaced apart two by two by 120°.
  7. Rotating bezel system (6) intended to be rotatably mounted on a watch case (2) middle part (4) made of ceramic within which is housed a horological movement, the system (6) comprising a rotating bezel and a spring ring (14) for snap fitting the rotating bezel, characterised in that the spring ring (14) is in accordance with any one of the preceding claims.
  8. Watch case (2) comprising a middle part (4) made of ceramic and a system (6) provided with a rotating bezel rotatably mounted on the middle part (4), the middle part (4) having a cylindrical outer rim provided with an annular groove (12), characterised in that the rotating bezel system (6) is in accordance with claim 7, the spring ring (14) being received in the annular groove (12) provided on the middle part (4), the or each inclined lug (16) engaging with a cylindrical outer surface (8) of the middle part (4).
  9. Watch (1) including a watch case (2), characterised in that the watch case (2) is in accordance with claim 8.
EP19201389.4A 2019-10-04 2019-10-04 Spring ring of a snap fitting of a rotating bezel Active EP3800514B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP19201389.4A EP3800514B1 (en) 2019-10-04 2019-10-04 Spring ring of a snap fitting of a rotating bezel
JP2020152557A JP7206240B2 (en) 2019-10-04 2020-09-11 Spring ring for snap-fitting the rotating bezel
US17/022,373 US11789408B2 (en) 2019-10-04 2020-09-16 Spring ring for snap fitting a rotating bezel
KR1020200125097A KR102515197B1 (en) 2019-10-04 2020-09-25 Spring ring for snap fitting a rotating bezel
CN202011048269.9A CN112612197B (en) 2019-10-04 2020-09-29 Spring ring for snap-fitting a rotary bezel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19201389.4A EP3800514B1 (en) 2019-10-04 2019-10-04 Spring ring of a snap fitting of a rotating bezel

Publications (2)

Publication Number Publication Date
EP3800514A1 EP3800514A1 (en) 2021-04-07
EP3800514B1 true EP3800514B1 (en) 2024-01-17

Family

ID=68137951

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19201389.4A Active EP3800514B1 (en) 2019-10-04 2019-10-04 Spring ring of a snap fitting of a rotating bezel

Country Status (5)

Country Link
US (1) US11789408B2 (en)
EP (1) EP3800514B1 (en)
JP (1) JP7206240B2 (en)
KR (1) KR102515197B1 (en)
CN (1) CN112612197B (en)

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Also Published As

Publication number Publication date
US20210103252A1 (en) 2021-04-08
US11789408B2 (en) 2023-10-17
KR102515197B1 (en) 2023-03-29
KR20210041495A (en) 2021-04-15
CN112612197B (en) 2023-03-28
JP2021060395A (en) 2021-04-15
CN112612197A (en) 2021-04-06
EP3800514A1 (en) 2021-04-07
JP7206240B2 (en) 2023-01-17

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